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-rw-r--r--include/linux/acct.h1
-rw-r--r--include/linux/acpi.h98
-rw-r--r--include/linux/acpi_agdi.h13
-rw-r--r--include/linux/aio.h4
-rw-r--r--include/linux/amba/bus.h41
-rw-r--r--include/linux/amba/mmci.h6
-rw-r--r--include/linux/arch_topology.h4
-rw-r--r--include/linux/arm-smccc.h5
-rw-r--r--include/linux/arm_ffa.h7
-rw-r--r--include/linux/arm_sdei.h2
-rw-r--r--include/linux/ata.h2
-rw-r--r--include/linux/atomic/atomic-arch-fallback.h108
-rw-r--r--include/linux/atomic/atomic-instrumented.h40
-rw-r--r--include/linux/audit.h2
-rw-r--r--include/linux/auxiliary_bus.h174
-rw-r--r--include/linux/backing-dev-defs.h8
-rw-r--r--include/linux/backing-dev.h58
-rw-r--r--include/linux/balloon_compaction.h22
-rw-r--r--include/linux/bcma/bcma_driver_chipcommon.h5
-rw-r--r--include/linux/binfmts.h15
-rw-r--r--include/linux/bio.h111
-rw-r--r--include/linux/bitfield.h22
-rw-r--r--include/linux/bitmap.h90
-rw-r--r--include/linux/bitops.h34
-rw-r--r--include/linux/blk-cgroup.h706
-rw-r--r--include/linux/blk-integrity.h1
-rw-r--r--include/linux/blk-mq.h111
-rw-r--r--include/linux/blk-pm.h2
-rw-r--r--include/linux/blk_types.h42
-rw-r--r--include/linux/blkdev.h509
-rw-r--r--include/linux/blktrace_api.h10
-rw-r--r--include/linux/bootconfig.h10
-rw-r--r--include/linux/bpf-cgroup.h32
-rw-r--r--include/linux/bpf.h467
-rw-r--r--include/linux/bpf_local_storage.h11
-rw-r--r--include/linux/bpf_types.h2
-rw-r--r--include/linux/bpf_verifier.h36
-rw-r--r--include/linux/bsg-lib.h1
-rw-r--r--include/linux/btf.h104
-rw-r--r--include/linux/btf_ids.h16
-rw-r--r--include/linux/buffer_head.h23
-rw-r--r--include/linux/byteorder/generic.h4
-rw-r--r--include/linux/cacheflush.h2
-rw-r--r--include/linux/can/bittiming.h6
-rw-r--r--include/linux/can/dev.h10
-rw-r--r--include/linux/can/led.h51
-rw-r--r--include/linux/can/rx-offload.h4
-rw-r--r--include/linux/cc_platform.h18
-rw-r--r--include/linux/cdrom.h1
-rw-r--r--include/linux/ceph/ceph_fs.h5
-rw-r--r--include/linux/ceph/libceph.h6
-rw-r--r--include/linux/ceph/messenger.h7
-rw-r--r--include/linux/ceph/osd_client.h3
-rw-r--r--include/linux/cfi.h11
-rw-r--r--include/linux/cgroup.h5
-rw-r--r--include/linux/cgroup_api.h1
-rw-r--r--include/linux/cleancache.h124
-rw-r--r--include/linux/clk-provider.h38
-rw-r--r--include/linux/clk.h11
-rw-r--r--include/linux/clk/at91_pmc.h4
-rw-r--r--include/linux/clk/pxa.h16
-rw-r--r--include/linux/clk/sunxi-ng.h15
-rw-r--r--include/linux/cma.h14
-rw-r--r--include/linux/comedi/comedi_8254.h134
-rw-r--r--include/linux/comedi/comedi_8255.h42
-rw-r--r--include/linux/comedi/comedi_isadma.h114
-rw-r--r--include/linux/comedi/comedi_pci.h56
-rw-r--r--include/linux/comedi/comedi_pcmcia.h48
-rw-r--r--include/linux/comedi/comedi_usb.h41
-rw-r--r--include/linux/comedi/comedidev.h1053
-rw-r--r--include/linux/comedi/comedilib.h26
-rw-r--r--include/linux/compaction.h5
-rw-r--r--include/linux/compat.h69
-rw-r--r--include/linux/compiler-clang.h35
-rw-r--r--include/linux/compiler-gcc.h15
-rw-r--r--include/linux/compiler.h24
-rw-r--r--include/linux/compiler_attributes.h39
-rw-r--r--include/linux/compiler_types.h32
-rw-r--r--include/linux/component.h24
-rw-r--r--include/linux/console.h19
-rw-r--r--include/linux/context_tracking_state.h8
-rw-r--r--include/linux/coredump.h28
-rw-r--r--include/linux/coresight.h5
-rw-r--r--include/linux/counter.h55
-rw-r--r--include/linux/cper.h3
-rw-r--r--include/linux/cpu.h5
-rw-r--r--include/linux/cpufreq.h9
-rw-r--r--include/linux/cpuhotplug.h6
-rw-r--r--include/linux/cpumask.h64
-rw-r--r--include/linux/cpumask_api.h1
-rw-r--r--include/linux/crash_dump.h19
-rw-r--r--include/linux/crc-itu-t.h2
-rw-r--r--include/linux/crc64.h7
-rw-r--r--include/linux/cred.h2
-rw-r--r--include/linux/crypto.h9
-rw-r--r--include/linux/cuda.h2
-rw-r--r--include/linux/damon.h190
-rw-r--r--include/linux/dax.h115
-rw-r--r--include/linux/dcache.h10
-rw-r--r--include/linux/delayacct.h138
-rw-r--r--include/linux/devfreq.h17
-rw-r--r--include/linux/device-mapper.h32
-rw-r--r--include/linux/device.h152
-rw-r--r--include/linux/device/bus.h3
-rw-r--r--include/linux/device/driver.h2
-rw-r--r--include/linux/dma-buf-map.h266
-rw-r--r--include/linux/dma-buf.h38
-rw-r--r--include/linux/dma-fence-array.h34
-rw-r--r--include/linux/dma-fence-chain.h20
-rw-r--r--include/linux/dma-fence-unwrap.h95
-rw-r--r--include/linux/dma-fence.h38
-rw-r--r--include/linux/dma-resv.h248
-rw-r--r--include/linux/dma/imx-dma.h (renamed from include/linux/platform_data/dma-imx.h)26
-rw-r--r--include/linux/dma/qcom_adm.h12
-rw-r--r--include/linux/dma/xilinx_dpdma.h11
-rw-r--r--include/linux/dmaengine.h33
-rw-r--r--include/linux/dmar.h6
-rw-r--r--include/linux/dnotify.h3
-rw-r--r--include/linux/dsa/8021q.h26
-rw-r--r--include/linux/dsa/tag_qca.h82
-rw-r--r--include/linux/dtpm.h36
-rw-r--r--include/linux/efi.h78
-rw-r--r--include/linux/elfcore-compat.h5
-rw-r--r--include/linux/elfcore.h18
-rw-r--r--include/linux/energy_model.h37
-rw-r--r--include/linux/entry-common.h70
-rw-r--r--include/linux/entry-kvm.h2
-rw-r--r--include/linux/etherdevice.h5
-rw-r--r--include/linux/ethtool.h12
-rw-r--r--include/linux/export-internal.h17
-rw-r--r--include/linux/export.h37
-rw-r--r--include/linux/exportfs.h2
-rw-r--r--include/linux/extcon.h2
-rw-r--r--include/linux/fanotify.h8
-rw-r--r--include/linux/fault-inject.h4
-rw-r--r--include/linux/fb.h21
-rw-r--r--include/linux/fdtable.h2
-rw-r--r--include/linux/file.h2
-rw-r--r--include/linux/filter.h36
-rw-r--r--include/linux/find.h372
-rw-r--r--include/linux/firewire.h3
-rw-r--r--include/linux/firmware.h84
-rw-r--r--include/linux/firmware/cirrus/cs_dsp.h49
-rw-r--r--include/linux/firmware/cirrus/wmfw.h1
-rw-r--r--include/linux/firmware/imx/svc/rm.h5
-rw-r--r--include/linux/firmware/intel/stratix10-smc.h21
-rw-r--r--include/linux/firmware/intel/stratix10-svc-client.h4
-rw-r--r--include/linux/firmware/mediatek/mtk-adsp-ipc.h65
-rw-r--r--include/linux/firmware/xlnx-event-manager.h36
-rw-r--r--include/linux/firmware/xlnx-zynqmp.h77
-rw-r--r--include/linux/fortify-string.h254
-rw-r--r--include/linux/fpga/fpga-bridge.h30
-rw-r--r--include/linux/fpga/fpga-mgr.h62
-rw-r--r--include/linux/fpga/fpga-region.h42
-rw-r--r--include/linux/fprobe.h105
-rw-r--r--include/linux/frontswap.h35
-rw-r--r--include/linux/fs.h315
-rw-r--r--include/linux/fs_api.h1
-rw-r--r--include/linux/fs_context.h2
-rw-r--r--include/linux/fscache-cache.h614
-rw-r--r--include/linux/fscache.h1031
-rw-r--r--include/linux/fscrypt.h69
-rw-r--r--include/linux/fsl/mc.h18
-rw-r--r--include/linux/fsnotify.h58
-rw-r--r--include/linux/fsnotify_backend.h179
-rw-r--r--include/linux/fsverity.h20
-rw-r--r--include/linux/ftrace.h43
-rw-r--r--include/linux/fwnode.h15
-rw-r--r--include/linux/genhd.h334
-rw-r--r--include/linux/gfp.h71
-rw-r--r--include/linux/gfp_api.h1
-rw-r--r--include/linux/goldfish.h15
-rw-r--r--include/linux/gpio/consumer.h59
-rw-r--r--include/linux/gpio/driver.h90
-rw-r--r--include/linux/gpio/machine.h12
-rw-r--r--include/linux/greybus/greybus_manifest.h4
-rw-r--r--include/linux/greybus/hd.h2
-rw-r--r--include/linux/greybus/module.h2
-rw-r--r--include/linux/hash.h5
-rw-r--r--include/linux/hashtable_api.h1
-rw-r--r--include/linux/hid.h23
-rw-r--r--include/linux/highmem-internal.h38
-rw-r--r--include/linux/highmem.h53
-rw-r--r--include/linux/hisi_acc_qm.h503
-rw-r--r--include/linux/hmm.h9
-rw-r--r--include/linux/host1x.h6
-rw-r--r--include/linux/host1x_context_bus.h15
-rw-r--r--include/linux/hrtimer_api.h1
-rw-r--r--include/linux/hte.h271
-rw-r--r--include/linux/huge_mm.h83
-rw-r--r--include/linux/hugetlb.h70
-rw-r--r--include/linux/hugetlb_cgroup.h7
-rw-r--r--include/linux/hw_random.h2
-rw-r--r--include/linux/hwmon.h8
-rw-r--r--include/linux/hyperv.h110
-rw-r--r--include/linux/i2c-smbus.h8
-rw-r--r--include/linux/i2c.h8
-rw-r--r--include/linux/i3c/ccc.h6
-rw-r--r--include/linux/i3c/master.h1
-rw-r--r--include/linux/icmpv6.h11
-rw-r--r--include/linux/ieee80211.h347
-rw-r--r--include/linux/ieee802154.h81
-rw-r--r--include/linux/if_arp.h1
-rw-r--r--include/linux/if_bridge.h20
-rw-r--r--include/linux/if_hsr.h16
-rw-r--r--include/linux/if_macvlan.h1
-rw-r--r--include/linux/if_vlan.h6
-rw-r--r--include/linux/iio/adc/ad_sigma_delta.h38
-rw-r--r--include/linux/iio/adc/qcom-vadc-common.h17
-rw-r--r--include/linux/iio/afe/rescale.h36
-rw-r--r--include/linux/iio/buffer-dma.h5
-rw-r--r--include/linux/iio/common/st_sensors.h3
-rw-r--r--include/linux/iio/iio-opaque.h4
-rw-r--r--include/linux/iio/iio.h75
-rw-r--r--include/linux/iio/imu/adis.h60
-rw-r--r--include/linux/iio/kfifo_buf.h5
-rw-r--r--include/linux/iio/trigger.h2
-rw-r--r--include/linux/iio/types.h1
-rw-r--r--include/linux/inetdevice.h1
-rw-r--r--include/linux/init.h11
-rw-r--r--include/linux/initrd.h2
-rw-r--r--include/linux/inotify.h3
-rw-r--r--include/linux/input.h2
-rw-r--r--include/linux/input/vivaldi-fmap.h27
-rw-r--r--include/linux/instrumentation.h6
-rw-r--r--include/linux/intel-iommu.h36
-rw-r--r--include/linux/intel-svm.h20
-rw-r--r--include/linux/interconnect.h36
-rw-r--r--include/linux/interrupt.h91
-rw-r--r--include/linux/io_uring.h43
-rw-r--r--include/linux/ioasid.h21
-rw-r--r--include/linux/iocontext.h49
-rw-r--r--include/linux/iomap.h35
-rw-r--r--include/linux/iommu.h229
-rw-r--r--include/linux/ioport.h2
-rw-r--r--include/linux/iosys-map.h459
-rw-r--r--include/linux/iova.h81
-rw-r--r--include/linux/ipc_namespace.h37
-rw-r--r--include/linux/ipmi.h5
-rw-r--r--include/linux/ipmi_smi.h6
-rw-r--r--include/linux/ipv6.h15
-rw-r--r--include/linux/irq.h11
-rw-r--r--include/linux/irqchip/arm-gic-v3.h6
-rw-r--r--include/linux/irqchip/irq-ixp4xx.h12
-rw-r--r--include/linux/irqchip/versatile-fpga.h14
-rw-r--r--include/linux/irqdesc.h1
-rw-r--r--include/linux/irqdomain.h17
-rw-r--r--include/linux/irqflags.h27
-rw-r--r--include/linux/jbd2.h22
-rw-r--r--include/linux/jump_label.h17
-rw-r--r--include/linux/kallsyms.h9
-rw-r--r--include/linux/kasan-enabled.h35
-rw-r--r--include/linux/kasan.h129
-rw-r--r--include/linux/kdb.h1
-rw-r--r--include/linux/kernel.h19
-rw-r--r--include/linux/kernfs.h22
-rw-r--r--include/linux/kexec.h60
-rw-r--r--include/linux/kfence.h26
-rw-r--r--include/linux/khugepaged.h44
-rw-r--r--include/linux/kobject.h35
-rw-r--r--include/linux/kobject_api.h1
-rw-r--r--include/linux/kprobes.h63
-rw-r--r--include/linux/kref_api.h1
-rw-r--r--include/linux/ksm.h4
-rw-r--r--include/linux/kthread.h56
-rw-r--r--include/linux/ktime_api.h1
-rw-r--r--include/linux/kvm_dirty_ring.h14
-rw-r--r--include/linux/kvm_host.h611
-rw-r--r--include/linux/kvm_types.h24
-rw-r--r--include/linux/latencytop.h3
-rw-r--r--include/linux/libata.h155
-rw-r--r--include/linux/libnvdimm.h24
-rw-r--r--include/linux/linkage.h64
-rw-r--r--include/linux/linkmode.h5
-rw-r--r--include/linux/list.h76
-rw-r--r--include/linux/list_lru.h17
-rw-r--r--include/linux/livepatch.h2
-rw-r--r--include/linux/llist_api.h1
-rw-r--r--include/linux/lockd/lockd.h9
-rw-r--r--include/linux/lockdep.h10
-rw-r--r--include/linux/lockdep_api.h1
-rw-r--r--include/linux/log2.h4
-rw-r--r--include/linux/lsm_audit.h2
-rw-r--r--include/linux/lsm_hook_defs.h6
-rw-r--r--include/linux/lsm_hooks.h10
-rw-r--r--include/linux/mailbox_controller.h1
-rw-r--r--include/linux/map_benchmark.h31
-rw-r--r--include/linux/math.h12
-rw-r--r--include/linux/math64.h13
-rw-r--r--include/linux/mc146818rtc.h8
-rw-r--r--include/linux/mdev.h82
-rw-r--r--include/linux/mdio.h70
-rw-r--r--include/linux/mei_aux.h19
-rw-r--r--include/linux/memblock.h2
-rw-r--r--include/linux/memcontrol.h144
-rw-r--r--include/linux/memory.h12
-rw-r--r--include/linux/memory_hotplug.h138
-rw-r--r--include/linux/mempolicy.h1
-rw-r--r--include/linux/memremap.h56
-rw-r--r--include/linux/mfd/dbx500-prcmu.h22
-rw-r--r--include/linux/mfd/hi655x-pmic.h4
-rw-r--r--include/linux/mfd/idt82p33_reg.h3
-rw-r--r--include/linux/mfd/idt8a340_reg.h12
-rw-r--r--include/linux/mfd/intel_soc_pmic.h8
-rw-r--r--include/linux/mfd/iqs62x.h7
-rw-r--r--include/linux/mfd/lpc_ich.h2
-rw-r--r--include/linux/mfd/max77686-private.h4
-rw-r--r--include/linux/mfd/max77714.h60
-rw-r--r--include/linux/mfd/mt6358/registers.h7
-rw-r--r--include/linux/mfd/mt6359/registers.h2
-rw-r--r--include/linux/mfd/mt6397/core.h1
-rw-r--r--include/linux/mfd/rk808.h1
-rw-r--r--include/linux/mfd/sy7636a.h34
-rw-r--r--include/linux/mfd/tc6393xb.h3
-rw-r--r--include/linux/mfd/tps65218.h2
-rw-r--r--include/linux/mfd/tps68470.h11
-rw-r--r--include/linux/mhi.h21
-rw-r--r--include/linux/mhi_ep.h277
-rw-r--r--include/linux/migrate.h33
-rw-r--r--include/linux/mii.h50
-rw-r--r--include/linux/mlx5/accel.h156
-rw-r--r--include/linux/mlx5/cq.h2
-rw-r--r--include/linux/mlx5/driver.h93
-rw-r--r--include/linux/mlx5/fs.h13
-rw-r--r--include/linux/mlx5/mlx5_ifc.h221
-rw-r--r--include/linux/mlx5/mlx5_ifc_fpga.h211
-rw-r--r--include/linux/mlx5/mlx5_ifc_vdpa.h39
-rw-r--r--include/linux/mlx5/port.h4
-rw-r--r--include/linux/mlx5/qp.h5
-rw-r--r--include/linux/mm.h569
-rw-r--r--include/linux/mm_api.h1
-rw-r--r--include/linux/mm_inline.h231
-rw-r--r--include/linux/mm_types.h239
-rw-r--r--include/linux/mman.h4
-rw-r--r--include/linux/mmc/core.h4
-rw-r--r--include/linux/mmc/host.h2
-rw-r--r--include/linux/mmzone.h47
-rw-r--r--include/linux/mod_devicetable.h4
-rw-r--r--include/linux/module.h37
-rw-r--r--include/linux/mount.h32
-rw-r--r--include/linux/mpage.h2
-rw-r--r--include/linux/msi.h289
-rw-r--r--include/linux/mtd/cfi.h1
-rw-r--r--include/linux/mtd/mtd.h17
-rw-r--r--include/linux/mtd/nand-ecc-mtk.h47
-rw-r--r--include/linux/mtd/nand-ecc-mxic.h49
-rw-r--r--include/linux/mtd/nand.h49
-rw-r--r--include/linux/mtd/rawnand.h2
-rw-r--r--include/linux/mtd/spi-nor.h22
-rw-r--r--include/linux/mtd/spinand.h3
-rw-r--r--include/linux/mutex_api.h1
-rw-r--r--include/linux/mux/consumer.h18
-rw-r--r--include/linux/namei.h6
-rw-r--r--include/linux/nd.h78
-rw-r--r--include/linux/net.h19
-rw-r--r--include/linux/net/intel/i40e_client.h10
-rw-r--r--include/linux/net/intel/iidc.h4
-rw-r--r--include/linux/netdev_features.h4
-rw-r--r--include/linux/netdevice.h567
-rw-r--r--include/linux/netfilter.h1
-rw-r--r--include/linux/netfilter/nf_conntrack_pptp.h38
-rw-r--r--include/linux/netfilter_netdev.h6
-rw-r--r--include/linux/netfs.h183
-rw-r--r--include/linux/netlink.h9
-rw-r--r--include/linux/nfs.h8
-rw-r--r--include/linux/nfs4.h2
-rw-r--r--include/linux/nfs_fs.h63
-rw-r--r--include/linux/nfs_fs_sb.h16
-rw-r--r--include/linux/nfs_xdr.h23
-rw-r--r--include/linux/node.h25
-rw-r--r--include/linux/nodemask.h51
-rw-r--r--include/linux/notifier.h7
-rw-r--r--include/linux/nvme-fc-driver.h16
-rw-r--r--include/linux/nvme-tcp.h1
-rw-r--r--include/linux/nvme.h111
-rw-r--r--include/linux/nvmem-consumer.h1
-rw-r--r--include/linux/nvmem-provider.h12
-rw-r--r--include/linux/objtool.h48
-rw-r--r--include/linux/of.h448
-rw-r--r--include/linux/of_fdt.h11
-rw-r--r--include/linux/of_irq.h6
-rw-r--r--include/linux/omap-dma.h35
-rw-r--r--include/linux/oom.h4
-rw-r--r--include/linux/overflow.h114
-rw-r--r--include/linux/page-flags.h172
-rw-r--r--include/linux/page-isolation.h6
-rw-r--r--include/linux/page_idle.h1
-rw-r--r--include/linux/page_table_check.h166
-rw-r--r--include/linux/pageblock-flags.h7
-rw-r--r--include/linux/pagemap.h344
-rw-r--r--include/linux/pagevec.h68
-rw-r--r--include/linux/panic.h6
-rw-r--r--include/linux/part_stat.h2
-rw-r--r--include/linux/pci-dma-compat.h129
-rw-r--r--include/linux/pci.h58
-rw-r--r--include/linux/pci_ids.h77
-rw-r--r--include/linux/pcs/pcs-xpcs.h3
-rw-r--r--include/linux/peci-cpu.h40
-rw-r--r--include/linux/peci.h112
-rw-r--r--include/linux/percpu.h13
-rw-r--r--include/linux/perf/arm_pmu.h2
-rw-r--r--include/linux/perf/riscv_pmu.h75
-rw-r--r--include/linux/perf_event.h83
-rw-r--r--include/linux/perf_event_api.h1
-rw-r--r--include/linux/pgtable.h77
-rw-r--r--include/linux/pgtable_api.h1
-rw-r--r--include/linux/phy.h15
-rw-r--r--include/linux/phy/phy-lvds.h32
-rw-r--r--include/linux/phy/phy.h4
-rw-r--r--include/linux/phylink.h10
-rw-r--r--include/linux/pid_namespace.h5
-rw-r--r--include/linux/pinctrl/pinconf-generic.h3
-rw-r--r--include/linux/pipe_fs_i.h6
-rw-r--r--include/linux/pktcdvd.h12
-rw-r--r--include/linux/platform-feature.h19
-rw-r--r--include/linux/platform_data/ad5755.h102
-rw-r--r--include/linux/platform_data/asoc-poodle.h16
-rw-r--r--include/linux/platform_data/asoc-pxa.h31
-rw-r--r--include/linux/platform_data/bcm7038_wdt.h8
-rw-r--r--include/linux/platform_data/brcmfmac.h2
-rw-r--r--include/linux/platform_data/brcmnand.h12
-rw-r--r--include/linux/platform_data/clk-fch.h2
-rw-r--r--include/linux/platform_data/cros_ec_commands.h76
-rw-r--r--include/linux/platform_data/cros_ec_proto.h6
-rw-r--r--include/linux/platform_data/eth_ixp4xx.h21
-rw-r--r--include/linux/platform_data/max732x.h12
-rw-r--r--include/linux/platform_data/mlxreg.h4
-rw-r--r--include/linux/platform_data/pcf857x.h2
-rw-r--r--include/linux/platform_data/pcmcia-pxa2xx_viper.h12
-rw-r--r--include/linux/platform_data/sh_mmcif.h (renamed from include/linux/mmc/sh_mmcif.h)2
-rw-r--r--include/linux/platform_data/spi-s3c64xx.h14
-rw-r--r--include/linux/platform_data/timer-ixp4xx.h11
-rw-r--r--include/linux/platform_data/usb-omap1.h2
-rw-r--r--include/linux/platform_data/video-pxafb.h22
-rw-r--r--include/linux/platform_data/wan_ixp4xx_hss.h17
-rw-r--r--include/linux/platform_data/x86/pmc_atom.h1
-rw-r--r--include/linux/platform_data/x86/spi-intel.h (renamed from include/linux/platform_data/x86/intel-spi.h)12
-rw-r--r--include/linux/platform_device.h16
-rw-r--r--include/linux/pm.h77
-rw-r--r--include/linux/pm_domain.h24
-rw-r--r--include/linux/pm_opp.h53
-rw-r--r--include/linux/pm_runtime.h34
-rw-r--r--include/linux/pmu.h2
-rw-r--r--include/linux/poll.h2
-rw-r--r--include/linux/polynomial.h35
-rw-r--r--include/linux/posix-timers.h3
-rw-r--r--include/linux/posix_acl_xattr.h4
-rw-r--r--include/linux/power/bq25890_charger.h15
-rw-r--r--include/linux/power_supply.h213
-rw-r--r--include/linux/prandom.h61
-rw-r--r--include/linux/printk.h92
-rw-r--r--include/linux/proc_fs.h25
-rw-r--r--include/linux/profile.h45
-rw-r--r--include/linux/property.h22
-rw-r--r--include/linux/psi.h14
-rw-r--r--include/linux/psi_types.h4
-rw-r--r--include/linux/pstore.h6
-rw-r--r--include/linux/ptp_classify.h18
-rw-r--r--include/linux/ptp_clock_kernel.h42
-rw-r--r--include/linux/ptrace.h88
-rw-r--r--include/linux/ptrace_api.h1
-rw-r--r--include/linux/qcom_scm.h16
-rw-r--r--include/linux/qed/qed_fcoe_if.h4
-rw-r--r--include/linux/qed/qed_iscsi_if.h4
-rw-r--r--include/linux/qed/qed_nvmetcp_if.h2
-rw-r--r--include/linux/qed/qed_nvmetcp_ip_services_if.h29
-rw-r--r--include/linux/quota.h2
-rw-r--r--include/linux/raid/pq.h2
-rw-r--r--include/linux/raid/xor.h21
-rw-r--r--include/linux/random.h102
-rw-r--r--include/linux/randomize_kstack.h48
-rw-r--r--include/linux/ratelimit_types.h14
-rw-r--r--include/linux/rcupdate.h5
-rw-r--r--include/linux/rcutiny.h3
-rw-r--r--include/linux/rcutree.h4
-rw-r--r--include/linux/rcuwait.h6
-rw-r--r--include/linux/rcuwait_api.h1
-rw-r--r--include/linux/reboot.h95
-rw-r--r--include/linux/ref_tracker.h6
-rw-r--r--include/linux/refcount_api.h1
-rw-r--r--include/linux/regmap.h18
-rw-r--r--include/linux/regulator/mt6358-regulator.h45
-rw-r--r--include/linux/regulator/pca9450.h7
-rw-r--r--include/linux/remoteproc.h5
-rw-r--r--include/linux/remoteproc/mtk_scp.h2
-rw-r--r--include/linux/reset.h20
-rw-r--r--include/linux/resource.h2
-rw-r--r--include/linux/resume_user_mode.h64
-rw-r--r--include/linux/rethook.h100
-rw-r--r--include/linux/rfkill.h5
-rw-r--r--include/linux/rio_ids.h13
-rw-r--r--include/linux/rmap.h205
-rw-r--r--include/linux/rpmsg.h14
-rw-r--r--include/linux/rtc.h2
-rw-r--r--include/linux/rtc/ds1685.h1
-rw-r--r--include/linux/rtmutex.h9
-rw-r--r--include/linux/rtnetlink.h4
-rw-r--r--include/linux/rtsx_pci.h8
-rw-r--r--include/linux/rwlock.h6
-rw-r--r--include/linux/rwlock_api_smp.h8
-rw-r--r--include/linux/rwlock_rt.h10
-rw-r--r--include/linux/rwsem.h2
-rw-r--r--include/linux/sbitmap.h64
-rw-r--r--include/linux/scatterlist.h29
-rw-r--r--include/linux/sched.h134
-rw-r--r--include/linux/sched/affinity.h1
-rw-r--r--include/linux/sched/cond_resched.h1
-rw-r--r--include/linux/sched/coredump.h3
-rw-r--r--include/linux/sched/deadline.h2
-rw-r--r--include/linux/sched/isolation.h43
-rw-r--r--include/linux/sched/jobctl.h8
-rw-r--r--include/linux/sched/mm.h69
-rw-r--r--include/linux/sched/posix-timers.h1
-rw-r--r--include/linux/sched/rseq_api.h1
-rw-r--r--include/linux/sched/signal.h73
-rw-r--r--include/linux/sched/sysctl.h63
-rw-r--r--include/linux/sched/task.h15
-rw-r--r--include/linux/sched/task_flags.h1
-rw-r--r--include/linux/sched/task_stack.h4
-rw-r--r--include/linux/sched/thread_info_api.h1
-rw-r--r--include/linux/sched/topology.h1
-rw-r--r--include/linux/sched_clock.h2
-rw-r--r--include/linux/scmi_protocol.h46
-rw-r--r--include/linux/seccomp.h3
-rw-r--r--include/linux/security.h10
-rw-r--r--include/linux/seq_file.h7
-rw-r--r--include/linux/seqlock.h8
-rw-r--r--include/linux/seqlock_api.h1
-rw-r--r--include/linux/serial.h2
-rw-r--r--include/linux/serial_8250.h2
-rw-r--r--include/linux/serial_core.h8
-rw-r--r--include/linux/serial_s3c.h12
-rw-r--r--include/linux/set_memory.h10
-rw-r--r--include/linux/shmem_fs.h10
-rw-r--r--include/linux/signal.h3
-rw-r--r--include/linux/siphash.h33
-rw-r--r--include/linux/sizes.h2
-rw-r--r--include/linux/skbuff.h664
-rw-r--r--include/linux/skmsg.h29
-rw-r--r--include/linux/slab.h39
-rw-r--r--include/linux/slub_def.h1
-rw-r--r--include/linux/soc/apple/rtkit.h155
-rw-r--r--include/linux/soc/apple/sart.h53
-rw-r--r--include/linux/soc/ixp4xx/cpu.h26
-rw-r--r--include/linux/soc/ixp4xx/npe.h2
-rw-r--r--include/linux/soc/mediatek/infracfg.h133
-rw-r--r--include/linux/soc/mediatek/mtk-cmdq.h5
-rw-r--r--include/linux/soc/mediatek/mtk-mmsys.h12
-rw-r--r--include/linux/soc/mediatek/mtk_wed.h131
-rw-r--r--include/linux/soc/pxa/cpu.h252
-rw-r--r--include/linux/soc/pxa/mfp.h470
-rw-r--r--include/linux/soc/pxa/smemc.h13
-rw-r--r--include/linux/soc/qcom/llcc-qcom.h11
-rw-r--r--include/linux/soc/qcom/mdt_loader.h17
-rw-r--r--include/linux/soc/qcom/smd-rpm.h1
-rw-r--r--include/linux/soc/renesas/r9a06g032-sysctrl.h11
-rw-r--r--include/linux/soc/ti/omap1-io.h143
-rw-r--r--include/linux/soc/ti/omap1-mux.h311
-rw-r--r--include/linux/soc/ti/omap1-soc.h198
-rw-r--r--include/linux/soc/ti/omap1-usb.h116
-rw-r--r--include/linux/soc/ti/ti-msgmgr.h8
-rw-r--r--include/linux/soc/ti/ti_sci_inta_msi.h2
-rw-r--r--include/linux/soc/ti/ti_sci_protocol.h2
-rw-r--r--include/linux/socket.h8
-rw-r--r--include/linux/softirq.h1
-rw-r--r--include/linux/sort.h2
-rw-r--r--include/linux/soundwire/sdw_intel.h4
-rw-r--r--include/linux/spi/pxa2xx_spi.h1
-rw-r--r--include/linux/spi/s3c24xx.h5
-rw-r--r--include/linux/spi/spi-mem.h26
-rw-r--r--include/linux/spi/spi.h48
-rw-r--r--include/linux/spinlock_api.h1
-rw-r--r--include/linux/spinlock_api_up.h1
-rw-r--r--include/linux/spinlock_types_up.h2
-rw-r--r--include/linux/srcutree.h32
-rw-r--r--include/linux/ssb/ssb_driver_gige.h2
-rw-r--r--include/linux/stackdepot.h43
-rw-r--r--include/linux/stackleak.h60
-rw-r--r--include/linux/static_call.h48
-rw-r--r--include/linux/stddef.h6
-rw-r--r--include/linux/stmmac.h1
-rw-r--r--include/linux/stop_machine.h16
-rw-r--r--include/linux/string.h4
-rw-r--r--include/linux/string_helpers.h24
-rw-r--r--include/linux/sunrpc/auth.h1
-rw-r--r--include/linux/sunrpc/cache.h8
-rw-r--r--include/linux/sunrpc/clnt.h1
-rw-r--r--include/linux/sunrpc/sched.h2
-rw-r--r--include/linux/sunrpc/svc.h104
-rw-r--r--include/linux/sunrpc/svc_xprt.h13
-rw-r--r--include/linux/sunrpc/xdr.h18
-rw-r--r--include/linux/sunrpc/xprt.h9
-rw-r--r--include/linux/sunrpc/xprtsock.h3
-rw-r--r--include/linux/suspend.h59
-rw-r--r--include/linux/swait_api.h1
-rw-r--r--include/linux/swap.h215
-rw-r--r--include/linux/swap_slots.h2
-rw-r--r--include/linux/swapfile.h3
-rw-r--r--include/linux/swapops.h134
-rw-r--r--include/linux/swiotlb.h28
-rw-r--r--include/linux/switchtec.h2
-rw-r--r--include/linux/syscalls.h7
-rw-r--r--include/linux/syscalls_api.h1
-rw-r--r--include/linux/sysctl.h68
-rw-r--r--include/linux/t10-pi.h29
-rw-r--r--include/linux/task_work.h6
-rw-r--r--include/linux/tcp.h1
-rw-r--r--include/linux/tee_drv.h156
-rw-r--r--include/linux/thermal.h3
-rw-r--r--include/linux/thread_info.h5
-rw-r--r--include/linux/thunderbolt.h21
-rw-r--r--include/linux/timekeeping.h1
-rw-r--r--include/linux/timer.h8
-rw-r--r--include/linux/timex.h10
-rw-r--r--include/linux/topology.h35
-rw-r--r--include/linux/torture.h2
-rw-r--r--include/linux/trace_events.h55
-rw-r--r--include/linux/tracehook.h227
-rw-r--r--include/linux/tty.h153
-rw-r--r--include/linux/tty_driver.h572
-rw-r--r--include/linux/tty_flip.h1
-rw-r--r--include/linux/tty_ldisc.h287
-rw-r--r--include/linux/tty_port.h134
-rw-r--r--include/linux/types.h1
-rw-r--r--include/linux/u64_stats_sync_api.h1
-rw-r--r--include/linux/uaccess.h83
-rw-r--r--include/linux/udp.h5
-rw-r--r--include/linux/uio.h44
-rw-r--r--include/linux/unaligned/packed_struct.h2
-rw-r--r--include/linux/unicode.h49
-rw-r--r--include/linux/usb.h26
-rw-r--r--include/linux/usb/ch9.h3
-rw-r--r--include/linux/usb/gadget.h28
-rw-r--r--include/linux/usb/hcd.h2
-rw-r--r--include/linux/usb/pd_bdo.h2
-rw-r--r--include/linux/usb/rndis_host.h1
-rw-r--r--include/linux/usb/role.h6
-rw-r--r--include/linux/usb/typec.h15
-rw-r--r--include/linux/usb/typec_mux.h22
-rw-r--r--include/linux/usb/usbnet.h1
-rw-r--r--include/linux/usb/xhci-dbgp.h2
-rw-r--r--include/linux/user_events.h63
-rw-r--r--include/linux/userfaultfd_k.h84
-rw-r--r--include/linux/vdpa.h110
-rw-r--r--include/linux/vermagic.h10
-rw-r--r--include/linux/vfio.h97
-rw-r--r--include/linux/vfio_pci_core.h18
-rw-r--r--include/linux/vhost_iotlb.h2
-rw-r--r--include/linux/virtio.h3
-rw-r--r--include/linux/virtio_config.h63
-rw-r--r--include/linux/visorbus.h344
-rw-r--r--include/linux/vm_event_item.h13
-rw-r--r--include/linux/vmalloc.h37
-rw-r--r--include/linux/vmw_vmci_defs.h84
-rw-r--r--include/linux/wait_api.h1
-rw-r--r--include/linux/watch_queue.h3
-rw-r--r--include/linux/wkup_m3_ipc.h13
-rw-r--r--include/linux/wm97xx.h4
-rw-r--r--include/linux/workqueue.h66
-rw-r--r--include/linux/workqueue_api.h1
-rw-r--r--include/linux/writeback.h23
-rw-r--r--include/linux/wwan.h2
-rw-r--r--include/linux/xarray.h29
663 files changed, 22051 insertions, 11099 deletions
diff --git a/include/linux/acct.h b/include/linux/acct.h
index bc70e81895c0..2718c4854815 100644
--- a/include/linux/acct.h
+++ b/include/linux/acct.h
@@ -21,7 +21,6 @@
#ifdef CONFIG_BSD_PROCESS_ACCT
struct pid_namespace;
-extern int acct_parm[]; /* for sysctl */
extern void acct_collect(long exitcode, int group_dead);
extern void acct_process(void);
extern void acct_exit_ns(struct pid_namespace *);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index eaeb4b9255bc..4f82a5bc6d98 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -133,6 +133,7 @@ union acpi_subtable_headers {
struct acpi_subtable_header common;
struct acpi_hmat_structure hmat;
struct acpi_prmt_module_header prmt;
+ struct acpi_cedt_header cedt;
};
typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
@@ -140,6 +141,9 @@ typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
typedef int (*acpi_tbl_entry_handler)(union acpi_subtable_headers *header,
const unsigned long end);
+typedef int (*acpi_tbl_entry_handler_arg)(union acpi_subtable_headers *header,
+ void *arg, const unsigned long end);
+
/* Debugger support */
struct acpi_debugger_ops {
@@ -216,6 +220,8 @@ static inline int acpi_debugger_notify_command_complete(void)
struct acpi_subtable_proc {
int id;
acpi_tbl_entry_handler handler;
+ acpi_tbl_entry_handler_arg handler_arg;
+ void *arg;
int count;
};
@@ -232,17 +238,31 @@ int acpi_locate_initial_tables (void);
void acpi_reserve_initial_tables (void);
void acpi_table_init_complete (void);
int acpi_table_init (void);
+
+#ifdef CONFIG_ACPI_TABLE_LIB
+#define EXPORT_SYMBOL_ACPI_LIB(x) EXPORT_SYMBOL_NS_GPL(x, ACPI)
+#define __init_or_acpilib
+#define __initdata_or_acpilib
+#else
+#define EXPORT_SYMBOL_ACPI_LIB(x)
+#define __init_or_acpilib __init
+#define __initdata_or_acpilib __initdata
+#endif
+
int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
-int __init acpi_table_parse_entries(char *id, unsigned long table_size,
- int entry_id,
- acpi_tbl_entry_handler handler,
- unsigned int max_entries);
-int __init acpi_table_parse_entries_array(char *id, unsigned long table_size,
- struct acpi_subtable_proc *proc, int proc_num,
- unsigned int max_entries);
+int __init_or_acpilib acpi_table_parse_entries(char *id,
+ unsigned long table_size, int entry_id,
+ acpi_tbl_entry_handler handler, unsigned int max_entries);
+int __init_or_acpilib acpi_table_parse_entries_array(char *id,
+ unsigned long table_size, struct acpi_subtable_proc *proc,
+ int proc_num, unsigned int max_entries);
int acpi_table_parse_madt(enum acpi_madt_type id,
acpi_tbl_entry_handler handler,
unsigned int max_entries);
+int __init_or_acpilib
+acpi_table_parse_cedt(enum acpi_cedt_type id,
+ acpi_tbl_entry_handler_arg handler_arg, void *arg);
+
int acpi_parse_mcfg (struct acpi_table_header *header);
void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
@@ -500,13 +520,10 @@ int acpi_check_resource_conflict(const struct resource *res);
int acpi_check_region(resource_size_t start, resource_size_t n,
const char *name);
-acpi_status acpi_release_memory(acpi_handle handle, struct resource *res,
- u32 level);
-
int acpi_resources_are_enforced(void);
#ifdef CONFIG_HIBERNATION
-void __init acpi_check_s4_hw_signature(int check);
+extern int acpi_check_s4_hw_signature;
#endif
#ifdef CONFIG_PM_SLEEP
@@ -530,10 +547,16 @@ struct acpi_osc_context {
acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
-/* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */
+/* Number of _OSC capability DWORDS depends on bridge type */
+#define OSC_PCI_CAPABILITY_DWORDS 3
+#define OSC_CXL_CAPABILITY_DWORDS 5
+
+/* Indexes into _OSC Capabilities Buffer (DWORDs 2 to 5 are device-specific) */
#define OSC_QUERY_DWORD 0 /* DWORD 1 */
#define OSC_SUPPORT_DWORD 1 /* DWORD 2 */
#define OSC_CONTROL_DWORD 2 /* DWORD 3 */
+#define OSC_EXT_SUPPORT_DWORD 3 /* DWORD 4 */
+#define OSC_EXT_CONTROL_DWORD 4 /* DWORD 5 */
/* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */
#define OSC_QUERY_ENABLE 0x00000001 /* input */
@@ -554,12 +577,15 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
#define OSC_SB_OSLPI_SUPPORT 0x00000100
#define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000
#define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00002000
+#define OSC_SB_CPC_FLEXIBLE_ADR_SPACE 0x00004000
#define OSC_SB_NATIVE_USB4_SUPPORT 0x00040000
#define OSC_SB_PRM_SUPPORT 0x00200000
extern bool osc_sb_apei_support_acked;
extern bool osc_pc_lpi_support_confirmed;
extern bool osc_sb_native_usb4_support_confirmed;
+extern bool osc_sb_cppc_not_supported;
+extern bool osc_cpc_flexible_adr_space_confirmed;
/* USB4 Capabilities */
#define OSC_USB_USB3_TUNNELING 0x00000001
@@ -587,6 +613,29 @@ extern u32 osc_sb_native_usb4_control;
#define OSC_PCI_EXPRESS_LTR_CONTROL 0x00000020
#define OSC_PCI_EXPRESS_DPC_CONTROL 0x00000080
+/* CXL _OSC: Capabilities DWORD 4: Support Field */
+#define OSC_CXL_1_1_PORT_REG_ACCESS_SUPPORT 0x00000001
+#define OSC_CXL_2_0_PORT_DEV_REG_ACCESS_SUPPORT 0x00000002
+#define OSC_CXL_PROTOCOL_ERR_REPORTING_SUPPORT 0x00000004
+#define OSC_CXL_NATIVE_HP_SUPPORT 0x00000008
+
+/* CXL _OSC: Capabilities DWORD 5: Control Field */
+#define OSC_CXL_ERROR_REPORTING_CONTROL 0x00000001
+
+static inline u32 acpi_osc_ctx_get_pci_control(struct acpi_osc_context *context)
+{
+ u32 *ret = context->ret.pointer;
+
+ return ret[OSC_CONTROL_DWORD];
+}
+
+static inline u32 acpi_osc_ctx_get_cxl_control(struct acpi_osc_context *context)
+{
+ u32 *ret = context->ret.pointer;
+
+ return ret[OSC_EXT_CONTROL_DWORD];
+}
+
#define ACPI_GSB_ACCESS_ATTRIB_QUICK 0x00000002
#define ACPI_GSB_ACCESS_ATTRIB_SEND_RCV 0x00000004
#define ACPI_GSB_ACCESS_ATTRIB_BYTE 0x00000006
@@ -671,7 +720,7 @@ int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
int acpi_device_modalias(struct device *, char *, int);
struct platform_device *acpi_create_platform_device(struct acpi_device *,
- struct property_entry *);
+ const struct property_entry *);
#define ACPI_PTR(_ptr) (_ptr)
static inline void acpi_device_set_enumerated(struct acpi_device *adev)
@@ -910,7 +959,7 @@ static inline int acpi_device_modalias(struct device *dev,
static inline struct platform_device *
acpi_create_platform_device(struct acpi_device *adev,
- struct property_entry *properties)
+ const struct property_entry *properties)
{
return NULL;
}
@@ -983,6 +1032,17 @@ static inline int acpi_register_wakeup_handler(int wake_irq,
static inline void acpi_unregister_wakeup_handler(
bool (*wakeup)(void *context), void *context) { }
+struct acpi_osc_context;
+static inline u32 acpi_osc_ctx_get_pci_control(struct acpi_osc_context *context)
+{
+ return 0;
+}
+
+static inline u32 acpi_osc_ctx_get_cxl_control(struct acpi_osc_context *context)
+{
+ return 0;
+}
+
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
@@ -1003,7 +1063,15 @@ void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
u32 val_a, u32 val_b);
-
+#ifdef CONFIG_X86
+struct acpi_s2idle_dev_ops {
+ struct list_head list_node;
+ void (*prepare)(void);
+ void (*restore)(void);
+};
+int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
+void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
+#endif /* CONFIG_X86 */
#ifndef CONFIG_IA64
void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
#else
diff --git a/include/linux/acpi_agdi.h b/include/linux/acpi_agdi.h
new file mode 100644
index 000000000000..f477f0b452fa
--- /dev/null
+++ b/include/linux/acpi_agdi.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ACPI_AGDI_H__
+#define __ACPI_AGDI_H__
+
+#include <linux/acpi.h>
+
+#ifdef CONFIG_ACPI_AGDI
+void __init acpi_agdi_init(void);
+#else
+static inline void acpi_agdi_init(void) {}
+#endif
+#endif /* __ACPI_AGDI_H__ */
diff --git a/include/linux/aio.h b/include/linux/aio.h
index b83e68dd006f..86892a4fe7c8 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -20,8 +20,4 @@ static inline void kiocb_set_cancel_fn(struct kiocb *req,
kiocb_cancel_fn *cancel) { }
#endif /* CONFIG_AIO */
-/* for sysctl: */
-extern unsigned long aio_nr;
-extern unsigned long aio_max_nr;
-
#endif /* __LINUX__AIO_H */
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index edfcf7a14dcd..e94cdf235f1d 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -70,7 +70,11 @@ struct amba_device {
unsigned int cid;
struct amba_cs_uci_id uci;
unsigned int irq[AMBA_NR_IRQS];
- char *driver_override;
+ /*
+ * Driver name to force a match. Do not set directly, because core
+ * frees it. Use driver_set_override() to set or clear it.
+ */
+ const char *driver_override;
};
struct amba_driver {
@@ -79,6 +83,14 @@ struct amba_driver {
void (*remove)(struct amba_device *);
void (*shutdown)(struct amba_device *);
const struct amba_id *id_table;
+ /*
+ * For most device drivers, no need to care about this flag as long as
+ * all DMAs are handled through the kernel DMA API. For some special
+ * ones, for example VFIO drivers, they know how to manage the DMA
+ * themselves and set this flag so that the IOMMU layer will allow them
+ * to setup and manage their own I/O address space.
+ */
+ bool driver_managed_dma;
};
/*
@@ -90,14 +102,8 @@ enum amba_vendor {
AMBA_VENDOR_ST = 0x80,
AMBA_VENDOR_QCOM = 0x51,
AMBA_VENDOR_LSI = 0xb6,
- AMBA_VENDOR_LINUX = 0xfe, /* This value is not official */
};
-/* This is used to generate pseudo-ID for AMBA device */
-#define AMBA_LINUX_ID(conf, rev, part) \
- (((conf) & 0xff) << 24 | ((rev) & 0xf) << 20 | \
- AMBA_VENDOR_LINUX << 12 | ((part) & 0xfff))
-
extern struct bus_type amba_bustype;
#define to_amba_device(d) container_of(d, struct amba_device, dev)
@@ -123,30 +129,9 @@ void amba_device_put(struct amba_device *);
int amba_device_add(struct amba_device *, struct resource *);
int amba_device_register(struct amba_device *, struct resource *);
void amba_device_unregister(struct amba_device *);
-struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
int amba_request_regions(struct amba_device *, const char *);
void amba_release_regions(struct amba_device *);
-static inline int amba_pclk_enable(struct amba_device *dev)
-{
- return clk_enable(dev->pclk);
-}
-
-static inline void amba_pclk_disable(struct amba_device *dev)
-{
- clk_disable(dev->pclk);
-}
-
-static inline int amba_pclk_prepare(struct amba_device *dev)
-{
- return clk_prepare(dev->pclk);
-}
-
-static inline void amba_pclk_unprepare(struct amba_device *dev)
-{
- clk_unprepare(dev->pclk);
-}
-
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h
index c92ebc39fc1f..6f96dc2209c0 100644
--- a/include/linux/amba/mmci.h
+++ b/include/linux/amba/mmci.h
@@ -13,17 +13,11 @@
* @ocr_mask: available voltages on the 4 pins from the block, this
* is ignored if a regulator is used, see the MMC_VDD_* masks in
* mmc/host.h
- * @ios_handler: a callback function to act on specfic ios changes,
- * used for example to control a levelshifter
- * mask into a value to be binary (or set some other custom bits
- * in MMCIPWR) or:ed and written into the MMCIPWR register of the
- * block. May also control external power based on the power_mode.
* @status: if no GPIO line was given to the block in this function will
* be called to determine whether a card is present in the MMC slot or not
*/
struct mmci_platform_data {
unsigned int ocr_mask;
- int (*ios_handler)(struct device *, struct mmc_ios *);
unsigned int (*status)(struct device *);
};
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
index cce6136b300a..58cbe18d825c 100644
--- a/include/linux/arch_topology.h
+++ b/include/linux/arch_topology.h
@@ -11,6 +11,10 @@
void topology_normalize_cpu_scale(void);
int topology_update_cpu_topology(void);
+#ifdef CONFIG_ACPI_CPPC_LIB
+void topology_init_cpu_capacity_cppc(void);
+#endif
+
struct device_node;
bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 63ccb5252190..220c8c60e021 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -92,6 +92,11 @@
ARM_SMCCC_SMC_32, \
0, 0x7fff)
+#define ARM_SMCCC_ARCH_WORKAROUND_3 \
+ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
+ ARM_SMCCC_SMC_32, \
+ 0, 0x3fff)
+
#define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \
ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
ARM_SMCCC_SMC_32, \
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index 85651e41ded8..e5c76c1ef9ed 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -38,7 +38,12 @@ struct ffa_driver {
static inline void ffa_dev_set_drvdata(struct ffa_device *fdev, void *data)
{
- fdev->dev.driver_data = data;
+ dev_set_drvdata(&fdev->dev, data);
+}
+
+static inline void *ffa_dev_get_drvdata(struct ffa_device *fdev)
+{
+ return dev_get_drvdata(&fdev->dev);
}
#if IS_REACHABLE(CONFIG_ARM_FFA_TRANSPORT)
diff --git a/include/linux/arm_sdei.h b/include/linux/arm_sdei.h
index 0a241c5c911d..14dc461b0e82 100644
--- a/include/linux/arm_sdei.h
+++ b/include/linux/arm_sdei.h
@@ -46,9 +46,11 @@ int sdei_unregister_ghes(struct ghes *ghes);
/* For use by arch code when CPU hotplug notifiers are not appropriate. */
int sdei_mask_local_cpu(void);
int sdei_unmask_local_cpu(void);
+void __init sdei_init(void);
#else
static inline int sdei_mask_local_cpu(void) { return 0; }
static inline int sdei_unmask_local_cpu(void) { return 0; }
+static inline void sdei_init(void) { }
#endif /* CONFIG_ARM_SDE_INTERFACE */
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 199e47e97d64..21292b5bbb55 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -324,12 +324,12 @@ enum {
ATA_LOG_NCQ_NON_DATA = 0x12,
ATA_LOG_NCQ_SEND_RECV = 0x13,
ATA_LOG_IDENTIFY_DEVICE = 0x30,
+ ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
/* Identify device log pages: */
ATA_LOG_SECURITY = 0x06,
ATA_LOG_SATA_SETTINGS = 0x08,
ATA_LOG_ZONED_INFORMATION = 0x09,
- ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
/* Identify device SATA settings log:*/
ATA_LOG_DEVSLP_OFFSET = 0x30,
diff --git a/include/linux/atomic/atomic-arch-fallback.h b/include/linux/atomic/atomic-arch-fallback.h
index a3dba31df01e..77bc5522e61c 100644
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -147,11 +147,90 @@
#endif /* arch_try_cmpxchg_relaxed */
+#ifndef arch_try_cmpxchg64_relaxed
+#ifdef arch_try_cmpxchg64
+#define arch_try_cmpxchg64_acquire arch_try_cmpxchg64
+#define arch_try_cmpxchg64_release arch_try_cmpxchg64
+#define arch_try_cmpxchg64_relaxed arch_try_cmpxchg64
+#endif /* arch_try_cmpxchg64 */
+
+#ifndef arch_try_cmpxchg64
+#define arch_try_cmpxchg64(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg64((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg64 */
+
+#ifndef arch_try_cmpxchg64_acquire
+#define arch_try_cmpxchg64_acquire(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg64_acquire((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg64_acquire */
+
+#ifndef arch_try_cmpxchg64_release
+#define arch_try_cmpxchg64_release(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg64_release((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg64_release */
+
+#ifndef arch_try_cmpxchg64_relaxed
+#define arch_try_cmpxchg64_relaxed(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg64_relaxed((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg64_relaxed */
+
+#else /* arch_try_cmpxchg64_relaxed */
+
+#ifndef arch_try_cmpxchg64_acquire
+#define arch_try_cmpxchg64_acquire(...) \
+ __atomic_op_acquire(arch_try_cmpxchg64, __VA_ARGS__)
+#endif
+
+#ifndef arch_try_cmpxchg64_release
+#define arch_try_cmpxchg64_release(...) \
+ __atomic_op_release(arch_try_cmpxchg64, __VA_ARGS__)
+#endif
+
+#ifndef arch_try_cmpxchg64
+#define arch_try_cmpxchg64(...) \
+ __atomic_op_fence(arch_try_cmpxchg64, __VA_ARGS__)
+#endif
+
+#endif /* arch_try_cmpxchg64_relaxed */
+
#ifndef arch_atomic_read_acquire
static __always_inline int
arch_atomic_read_acquire(const atomic_t *v)
{
- return smp_load_acquire(&(v)->counter);
+ int ret;
+
+ if (__native_word(atomic_t)) {
+ ret = smp_load_acquire(&(v)->counter);
+ } else {
+ ret = arch_atomic_read(v);
+ __atomic_acquire_fence();
+ }
+
+ return ret;
}
#define arch_atomic_read_acquire arch_atomic_read_acquire
#endif
@@ -160,7 +239,12 @@ arch_atomic_read_acquire(const atomic_t *v)
static __always_inline void
arch_atomic_set_release(atomic_t *v, int i)
{
- smp_store_release(&(v)->counter, i);
+ if (__native_word(atomic_t)) {
+ smp_store_release(&(v)->counter, i);
+ } else {
+ __atomic_release_fence();
+ arch_atomic_set(v, i);
+ }
}
#define arch_atomic_set_release arch_atomic_set_release
#endif
@@ -1258,7 +1342,16 @@ arch_atomic_dec_if_positive(atomic_t *v)
static __always_inline s64
arch_atomic64_read_acquire(const atomic64_t *v)
{
- return smp_load_acquire(&(v)->counter);
+ s64 ret;
+
+ if (__native_word(atomic64_t)) {
+ ret = smp_load_acquire(&(v)->counter);
+ } else {
+ ret = arch_atomic64_read(v);
+ __atomic_acquire_fence();
+ }
+
+ return ret;
}
#define arch_atomic64_read_acquire arch_atomic64_read_acquire
#endif
@@ -1267,7 +1360,12 @@ arch_atomic64_read_acquire(const atomic64_t *v)
static __always_inline void
arch_atomic64_set_release(atomic64_t *v, s64 i)
{
- smp_store_release(&(v)->counter, i);
+ if (__native_word(atomic64_t)) {
+ smp_store_release(&(v)->counter, i);
+ } else {
+ __atomic_release_fence();
+ arch_atomic64_set(v, i);
+ }
}
#define arch_atomic64_set_release arch_atomic64_set_release
#endif
@@ -2358,4 +2456,4 @@ arch_atomic64_dec_if_positive(atomic64_t *v)
#endif
#endif /* _LINUX_ATOMIC_FALLBACK_H */
-// cca554917d7ea73d5e3e7397dd70c484cad9b2c4
+// b5e87bdd5ede61470c29f7a7e4de781af3770f09
diff --git a/include/linux/atomic/atomic-instrumented.h b/include/linux/atomic/atomic-instrumented.h
index 5d69b143c28e..7a139ec030b0 100644
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -2006,6 +2006,44 @@ atomic_long_dec_if_positive(atomic_long_t *v)
arch_try_cmpxchg_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
+#define try_cmpxchg64(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ kcsan_mb(); \
+ instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg64(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg64_acquire(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg64_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg64_release(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ kcsan_release(); \
+ instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg64_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg64_relaxed(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg64_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
#define cmpxchg_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -2045,4 +2083,4 @@ atomic_long_dec_if_positive(atomic_long_t *v)
})
#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// 87c974b93032afd42143613434d1a7788fa598f9
+// 764f741eb77a7ad565dc8d99ce2837d5542e8aee
diff --git a/include/linux/audit.h b/include/linux/audit.h
index d06134ac6245..cece70231138 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -339,7 +339,7 @@ static inline void audit_uring_entry(u8 op)
}
static inline void audit_uring_exit(int success, long code)
{
- if (unlikely(!audit_dummy_context()))
+ if (unlikely(audit_context()))
__audit_uring_exit(success, code);
}
static inline void audit_syscall_entry(int major, unsigned long a0,
diff --git a/include/linux/auxiliary_bus.h b/include/linux/auxiliary_bus.h
index fc51d45f106b..de21d9d24a95 100644
--- a/include/linux/auxiliary_bus.h
+++ b/include/linux/auxiliary_bus.h
@@ -11,12 +11,172 @@
#include <linux/device.h>
#include <linux/mod_devicetable.h>
+/**
+ * DOC: DEVICE_LIFESPAN
+ *
+ * The registering driver is the entity that allocates memory for the
+ * auxiliary_device and registers it on the auxiliary bus. It is important to
+ * note that, as opposed to the platform bus, the registering driver is wholly
+ * responsible for the management of the memory used for the device object.
+ *
+ * To be clear the memory for the auxiliary_device is freed in the release()
+ * callback defined by the registering driver. The registering driver should
+ * only call auxiliary_device_delete() and then auxiliary_device_uninit() when
+ * it is done with the device. The release() function is then automatically
+ * called if and when other code releases their reference to the devices.
+ *
+ * A parent object, defined in the shared header file, contains the
+ * auxiliary_device. It also contains a pointer to the shared object(s), which
+ * also is defined in the shared header. Both the parent object and the shared
+ * object(s) are allocated by the registering driver. This layout allows the
+ * auxiliary_driver's registering module to perform a container_of() call to go
+ * from the pointer to the auxiliary_device, that is passed during the call to
+ * the auxiliary_driver's probe function, up to the parent object, and then
+ * have access to the shared object(s).
+ *
+ * The memory for the shared object(s) must have a lifespan equal to, or
+ * greater than, the lifespan of the memory for the auxiliary_device. The
+ * auxiliary_driver should only consider that the shared object is valid as
+ * long as the auxiliary_device is still registered on the auxiliary bus. It
+ * is up to the registering driver to manage (e.g. free or keep available) the
+ * memory for the shared object beyond the life of the auxiliary_device.
+ *
+ * The registering driver must unregister all auxiliary devices before its own
+ * driver.remove() is completed. An easy way to ensure this is to use the
+ * devm_add_action_or_reset() call to register a function against the parent
+ * device which unregisters the auxiliary device object(s).
+ *
+ * Finally, any operations which operate on the auxiliary devices must continue
+ * to function (if only to return an error) after the registering driver
+ * unregisters the auxiliary device.
+ */
+
+/**
+ * struct auxiliary_device - auxiliary device object.
+ * @dev: Device,
+ * The release and parent fields of the device structure must be filled
+ * in
+ * @name: Match name found by the auxiliary device driver,
+ * @id: unique identitier if multiple devices of the same name are exported,
+ *
+ * An auxiliary_device represents a part of its parent device's functionality.
+ * It is given a name that, combined with the registering drivers
+ * KBUILD_MODNAME, creates a match_name that is used for driver binding, and an
+ * id that combined with the match_name provide a unique name to register with
+ * the bus subsystem. For example, a driver registering an auxiliary device is
+ * named 'foo_mod.ko' and the subdevice is named 'foo_dev'. The match name is
+ * therefore 'foo_mod.foo_dev'.
+ *
+ * Registering an auxiliary_device is a three-step process.
+ *
+ * First, a 'struct auxiliary_device' needs to be defined or allocated for each
+ * sub-device desired. The name, id, dev.release, and dev.parent fields of
+ * this structure must be filled in as follows.
+ *
+ * The 'name' field is to be given a name that is recognized by the auxiliary
+ * driver. If two auxiliary_devices with the same match_name, eg
+ * "foo_mod.foo_dev", are registered onto the bus, they must have unique id
+ * values (e.g. "x" and "y") so that the registered devices names are
+ * "foo_mod.foo_dev.x" and "foo_mod.foo_dev.y". If match_name + id are not
+ * unique, then the device_add fails and generates an error message.
+ *
+ * The auxiliary_device.dev.type.release or auxiliary_device.dev.release must
+ * be populated with a non-NULL pointer to successfully register the
+ * auxiliary_device. This release call is where resources associated with the
+ * auxiliary device must be free'ed. Because once the device is placed on the
+ * bus the parent driver can not tell what other code may have a reference to
+ * this data.
+ *
+ * The auxiliary_device.dev.parent should be set. Typically to the registering
+ * drivers device.
+ *
+ * Second, call auxiliary_device_init(), which checks several aspects of the
+ * auxiliary_device struct and performs a device_initialize(). After this step
+ * completes, any error state must have a call to auxiliary_device_uninit() in
+ * its resolution path.
+ *
+ * The third and final step in registering an auxiliary_device is to perform a
+ * call to auxiliary_device_add(), which sets the name of the device and adds
+ * the device to the bus.
+ *
+ * .. code-block:: c
+ *
+ * #define MY_DEVICE_NAME "foo_dev"
+ *
+ * ...
+ *
+ * struct auxiliary_device *my_aux_dev = my_aux_dev_alloc(xxx);
+ *
+ * // Step 1:
+ * my_aux_dev->name = MY_DEVICE_NAME;
+ * my_aux_dev->id = my_unique_id_alloc(xxx);
+ * my_aux_dev->dev.release = my_aux_dev_release;
+ * my_aux_dev->dev.parent = my_dev;
+ *
+ * // Step 2:
+ * if (auxiliary_device_init(my_aux_dev))
+ * goto fail;
+ *
+ * // Step 3:
+ * if (auxiliary_device_add(my_aux_dev)) {
+ * auxiliary_device_uninit(my_aux_dev);
+ * goto fail;
+ * }
+ *
+ * ...
+ *
+ *
+ * Unregistering an auxiliary_device is a two-step process to mirror the
+ * register process. First call auxiliary_device_delete(), then call
+ * auxiliary_device_uninit().
+ *
+ * .. code-block:: c
+ *
+ * auxiliary_device_delete(my_dev->my_aux_dev);
+ * auxiliary_device_uninit(my_dev->my_aux_dev);
+ */
struct auxiliary_device {
struct device dev;
const char *name;
u32 id;
};
+/**
+ * struct auxiliary_driver - Definition of an auxiliary bus driver
+ * @probe: Called when a matching device is added to the bus.
+ * @remove: Called when device is removed from the bus.
+ * @shutdown: Called at shut-down time to quiesce the device.
+ * @suspend: Called to put the device to sleep mode. Usually to a power state.
+ * @resume: Called to bring a device from sleep mode.
+ * @name: Driver name.
+ * @driver: Core driver structure.
+ * @id_table: Table of devices this driver should match on the bus.
+ *
+ * Auxiliary drivers follow the standard driver model convention, where
+ * discovery/enumeration is handled by the core, and drivers provide probe()
+ * and remove() methods. They support power management and shutdown
+ * notifications using the standard conventions.
+ *
+ * Auxiliary drivers register themselves with the bus by calling
+ * auxiliary_driver_register(). The id_table contains the match_names of
+ * auxiliary devices that a driver can bind with.
+ *
+ * .. code-block:: c
+ *
+ * static const struct auxiliary_device_id my_auxiliary_id_table[] = {
+ * { .name = "foo_mod.foo_dev" },
+ * {},
+ * };
+ *
+ * MODULE_DEVICE_TABLE(auxiliary, my_auxiliary_id_table);
+ *
+ * struct auxiliary_driver my_drv = {
+ * .name = "myauxiliarydrv",
+ * .id_table = my_auxiliary_id_table,
+ * .probe = my_drv_probe,
+ * .remove = my_drv_remove
+ * };
+ */
struct auxiliary_driver {
int (*probe)(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id);
void (*remove)(struct auxiliary_device *auxdev);
@@ -28,6 +188,16 @@ struct auxiliary_driver {
const struct auxiliary_device_id *id_table;
};
+static inline void *auxiliary_get_drvdata(struct auxiliary_device *auxdev)
+{
+ return dev_get_drvdata(&auxdev->dev);
+}
+
+static inline void auxiliary_set_drvdata(struct auxiliary_device *auxdev, void *data)
+{
+ dev_set_drvdata(&auxdev->dev, data);
+}
+
static inline struct auxiliary_device *to_auxiliary_dev(struct device *dev)
{
return container_of(dev, struct auxiliary_device, dev);
@@ -66,6 +236,10 @@ void auxiliary_driver_unregister(struct auxiliary_driver *auxdrv);
* Helper macro for auxiliary drivers which do not do anything special in
* module init/exit. This eliminates a lot of boilerplate. Each module may only
* use this macro once, and calling it replaces module_init() and module_exit()
+ *
+ * .. code-block:: c
+ *
+ * module_auxiliary_driver(my_drv);
*/
#define module_auxiliary_driver(__auxiliary_driver) \
module_driver(__auxiliary_driver, auxiliary_driver_register, auxiliary_driver_unregister)
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 993c5628a726..e863c88df95f 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -207,14 +207,6 @@ struct backing_dev_info {
#endif
};
-enum {
- BLK_RW_ASYNC = 0,
- BLK_RW_SYNC = 1,
-};
-
-void clear_bdi_congested(struct backing_dev_info *bdi, int sync);
-void set_bdi_congested(struct backing_dev_info *bdi, int sync);
-
struct wb_lock_cookie {
bool locked;
unsigned long flags;
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 483979c1b9f4..d452071db572 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -17,8 +17,6 @@
#include <linux/backing-dev-defs.h>
#include <linux/slab.h>
-struct blkcg;
-
static inline struct backing_dev_info *bdi_get(struct backing_dev_info *bdi)
{
kref_get(&bdi->refcnt);
@@ -121,6 +119,8 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
extern struct backing_dev_info noop_backing_dev_info;
+int bdi_init(struct backing_dev_info *bdi);
+
/**
* writeback_in_progress - determine whether there is writeback in progress
* @wb: bdi_writeback of interest
@@ -135,13 +135,6 @@ static inline bool writeback_in_progress(struct bdi_writeback *wb)
struct backing_dev_info *inode_to_bdi(struct inode *inode);
-static inline int wb_congested(struct bdi_writeback *wb, int cong_bits)
-{
- return wb->congested & cong_bits;
-}
-
-long congestion_wait(int sync, long timeout);
-
static inline bool mapping_can_writeback(struct address_space *mapping)
{
return inode_to_bdi(mapping->host)->capabilities & BDI_CAP_WRITEBACK;
@@ -161,8 +154,7 @@ struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi,
struct cgroup_subsys_state *memcg_css,
gfp_t gfp);
void wb_memcg_offline(struct mem_cgroup *memcg);
-void wb_blkcg_offline(struct blkcg *blkcg);
-int inode_congested(struct inode *inode, int cong_bits);
+void wb_blkcg_offline(struct cgroup_subsys_state *css);
/**
* inode_cgwb_enabled - test whether cgroup writeback is enabled on an inode
@@ -386,54 +378,12 @@ static inline void wb_memcg_offline(struct mem_cgroup *memcg)
{
}
-static inline void wb_blkcg_offline(struct blkcg *blkcg)
+static inline void wb_blkcg_offline(struct cgroup_subsys_state *css)
{
}
-static inline int inode_congested(struct inode *inode, int cong_bits)
-{
- return wb_congested(&inode_to_bdi(inode)->wb, cong_bits);
-}
-
#endif /* CONFIG_CGROUP_WRITEBACK */
-static inline int inode_read_congested(struct inode *inode)
-{
- return inode_congested(inode, 1 << WB_sync_congested);
-}
-
-static inline int inode_write_congested(struct inode *inode)
-{
- return inode_congested(inode, 1 << WB_async_congested);
-}
-
-static inline int inode_rw_congested(struct inode *inode)
-{
- return inode_congested(inode, (1 << WB_sync_congested) |
- (1 << WB_async_congested));
-}
-
-static inline int bdi_congested(struct backing_dev_info *bdi, int cong_bits)
-{
- return wb_congested(&bdi->wb, cong_bits);
-}
-
-static inline int bdi_read_congested(struct backing_dev_info *bdi)
-{
- return bdi_congested(bdi, 1 << WB_sync_congested);
-}
-
-static inline int bdi_write_congested(struct backing_dev_info *bdi)
-{
- return bdi_congested(bdi, 1 << WB_async_congested);
-}
-
-static inline int bdi_rw_congested(struct backing_dev_info *bdi)
-{
- return bdi_congested(bdi, (1 << WB_sync_congested) |
- (1 << WB_async_congested));
-}
-
const char *bdi_dev_name(struct backing_dev_info *bdi);
#endif /* _LINUX_BACKING_DEV_H */
diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index 338aa27e4773..edb7f6d41faa 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -80,12 +80,6 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon)
#ifdef CONFIG_BALLOON_COMPACTION
extern const struct address_space_operations balloon_aops;
-extern bool balloon_page_isolate(struct page *page,
- isolate_mode_t mode);
-extern void balloon_page_putback(struct page *page);
-extern int balloon_page_migrate(struct address_space *mapping,
- struct page *newpage,
- struct page *page, enum migrate_mode mode);
/*
* balloon_page_insert - insert a page into the balloon's page list and make
@@ -155,22 +149,6 @@ static inline void balloon_page_delete(struct page *page)
list_del(&page->lru);
}
-static inline bool balloon_page_isolate(struct page *page)
-{
- return false;
-}
-
-static inline void balloon_page_putback(struct page *page)
-{
- return;
-}
-
-static inline int balloon_page_migrate(struct page *newpage,
- struct page *page, enum migrate_mode mode)
-{
- return 0;
-}
-
static inline gfp_t balloon_mapping_gfp_mask(void)
{
return GFP_HIGHUSER;
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index d35b9206096d..e3314f746bfa 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -3,6 +3,7 @@
#define LINUX_BCMA_DRIVER_CC_H_
#include <linux/platform_device.h>
+#include <linux/platform_data/brcmnand.h>
#include <linux/gpio.h>
/** ChipCommon core registers. **/
@@ -599,6 +600,10 @@ struct bcma_sflash {
#ifdef CONFIG_BCMA_NFLASH
struct bcma_nflash {
+ /* Must be the fist member for the brcmnand driver to
+ * de-reference that structure.
+ */
+ struct brcmnand_platform_data brcmnand_info;
bool present;
bool boot; /* This is the flash the SoC boots from */
};
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 049cf9421d83..3dc20c4f394c 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -8,6 +8,7 @@
#include <uapi/linux/binfmts.h>
struct filename;
+struct coredump_params;
#define CORENAME_MAX_SIZE 128
@@ -77,18 +78,6 @@ struct linux_binprm {
#define BINPRM_FLAGS_PRESERVE_ARGV0_BIT 3
#define BINPRM_FLAGS_PRESERVE_ARGV0 (1 << BINPRM_FLAGS_PRESERVE_ARGV0_BIT)
-/* Function parameter for binfmt->coredump */
-struct coredump_params {
- const kernel_siginfo_t *siginfo;
- struct pt_regs *regs;
- struct file *file;
- unsigned long limit;
- unsigned long mm_flags;
- loff_t written;
- loff_t pos;
- loff_t to_skip;
-};
-
/*
* This structure defines the functions that are used to load the binary formats that
* linux accepts.
@@ -98,8 +87,10 @@ struct linux_binfmt {
struct module *module;
int (*load_binary)(struct linux_binprm *);
int (*load_shlib)(struct file *);
+#ifdef CONFIG_COREDUMP
int (*core_dump)(struct coredump_params *cprm);
unsigned long min_coredump; /* minimal dump size */
+#endif
} __randomize_layout;
extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index fe6bdfbbef66..992ee987f273 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -65,7 +65,6 @@ static inline bool bio_no_advance_iter(const struct bio *bio)
{
return bio_op(bio) == REQ_OP_DISCARD ||
bio_op(bio) == REQ_OP_SECURE_ERASE ||
- bio_op(bio) == REQ_OP_WRITE_SAME ||
bio_op(bio) == REQ_OP_WRITE_ZEROES;
}
@@ -124,7 +123,7 @@ void __bio_advance(struct bio *, unsigned bytes);
/**
* bio_advance - increment/complete a bio by some number of bytes
* @bio: bio to advance
- * @bytes: number of bytes to complete
+ * @nbytes: number of bytes to complete
*
* This updates bi_sector, bi_size and bi_idx; if the number of bytes to
* complete doesn't align with a bvec boundary, then bv_len and bv_offset will
@@ -166,7 +165,7 @@ static inline void bio_advance(struct bio *bio, unsigned int nbytes)
*/
#define bio_for_each_bvec_all(bvl, bio, i) \
for (i = 0, bvl = bio_first_bvec_all(bio); \
- i < (bio)->bi_vcnt; i++, bvl++) \
+ i < (bio)->bi_vcnt; i++, bvl++)
#define bio_iter_last(bvec, iter) ((iter).bi_size == (bvec).bv_len)
@@ -186,8 +185,6 @@ static inline unsigned bio_segments(struct bio *bio)
case REQ_OP_SECURE_ERASE:
case REQ_OP_WRITE_ZEROES:
return 0;
- case REQ_OP_WRITE_SAME:
- return 1;
default:
break;
}
@@ -260,6 +257,60 @@ static inline struct bio_vec *bio_last_bvec_all(struct bio *bio)
return &bio->bi_io_vec[bio->bi_vcnt - 1];
}
+/**
+ * struct folio_iter - State for iterating all folios in a bio.
+ * @folio: The current folio we're iterating. NULL after the last folio.
+ * @offset: The byte offset within the current folio.
+ * @length: The number of bytes in this iteration (will not cross folio
+ * boundary).
+ */
+struct folio_iter {
+ struct folio *folio;
+ size_t offset;
+ size_t length;
+ /* private: for use by the iterator */
+ struct folio *_next;
+ size_t _seg_count;
+ int _i;
+};
+
+static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
+ int i)
+{
+ struct bio_vec *bvec = bio_first_bvec_all(bio) + i;
+
+ fi->folio = page_folio(bvec->bv_page);
+ fi->offset = bvec->bv_offset +
+ PAGE_SIZE * (bvec->bv_page - &fi->folio->page);
+ fi->_seg_count = bvec->bv_len;
+ fi->length = min(folio_size(fi->folio) - fi->offset, fi->_seg_count);
+ fi->_next = folio_next(fi->folio);
+ fi->_i = i;
+}
+
+static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio)
+{
+ fi->_seg_count -= fi->length;
+ if (fi->_seg_count) {
+ fi->folio = fi->_next;
+ fi->offset = 0;
+ fi->length = min(folio_size(fi->folio), fi->_seg_count);
+ fi->_next = folio_next(fi->folio);
+ } else if (fi->_i + 1 < bio->bi_vcnt) {
+ bio_first_folio(fi, bio, fi->_i + 1);
+ } else {
+ fi->folio = NULL;
+ }
+}
+
+/**
+ * bio_for_each_folio_all - Iterate over each folio in a bio.
+ * @fi: struct folio_iter which is updated for each folio.
+ * @bio: struct bio to iterate over.
+ */
+#define bio_for_each_folio_all(fi, bio) \
+ for (bio_first_folio(&fi, bio, 0); fi.folio; bio_next_folio(&fi, bio))
+
enum bip_flags {
BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
@@ -332,7 +383,7 @@ extern struct bio *bio_split(struct bio *bio, int sectors,
* @gfp: gfp mask
* @bs: bio set to allocate from
*
- * Returns a bio representing the next @sectors of @bio - if the bio is smaller
+ * Return: a bio representing the next @sectors of @bio - if the bio is smaller
* than @sectors, returns the original bio unchanged.
*/
static inline struct bio *bio_next_split(struct bio *bio, int sectors,
@@ -352,23 +403,24 @@ enum {
extern int bioset_init(struct bio_set *, unsigned int, unsigned int, int flags);
extern void bioset_exit(struct bio_set *);
extern int biovec_init_pool(mempool_t *pool, int pool_entries);
-extern int bioset_init_from_src(struct bio_set *bs, struct bio_set *src);
-struct bio *bio_alloc_bioset(gfp_t gfp, unsigned short nr_iovecs,
- struct bio_set *bs);
-struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs,
- struct bio_set *bs);
-struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned short nr_iovecs);
+struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
+ unsigned int opf, gfp_t gfp_mask,
+ struct bio_set *bs);
+struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask);
extern void bio_put(struct bio *);
-extern void __bio_clone_fast(struct bio *, struct bio *);
-extern struct bio *bio_clone_fast(struct bio *, gfp_t, struct bio_set *);
+struct bio *bio_alloc_clone(struct block_device *bdev, struct bio *bio_src,
+ gfp_t gfp, struct bio_set *bs);
+int bio_init_clone(struct block_device *bdev, struct bio *bio,
+ struct bio *bio_src, gfp_t gfp);
extern struct bio_set fs_bio_set;
-static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)
+static inline struct bio *bio_alloc(struct block_device *bdev,
+ unsigned short nr_vecs, unsigned int opf, gfp_t gfp_mask)
{
- return bio_alloc_bioset(gfp_mask, nr_iovecs, &fs_bio_set);
+ return bio_alloc_bioset(bdev, nr_vecs, opf, gfp_mask, &fs_bio_set);
}
void submit_bio(struct bio *bio);
@@ -403,13 +455,14 @@ static inline int bio_iov_vecs_to_alloc(struct iov_iter *iter, int max_segs)
struct request_queue;
extern int submit_bio_wait(struct bio *bio);
-extern void bio_init(struct bio *bio, struct bio_vec *table,
- unsigned short max_vecs);
+void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table,
+ unsigned short max_vecs, unsigned int opf);
extern void bio_uninit(struct bio *);
-extern void bio_reset(struct bio *);
+void bio_reset(struct bio *bio, struct block_device *bdev, unsigned int opf);
void bio_chain(struct bio *, struct bio *);
-extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int);
+int bio_add_page(struct bio *, struct page *, unsigned len, unsigned off);
+bool bio_add_folio(struct bio *, struct folio *, size_t len, size_t off);
extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *,
unsigned int, unsigned int);
int bio_add_zone_append_page(struct bio *bio, struct page *page,
@@ -435,8 +488,6 @@ static inline void bio_release_pages(struct bio *bio, bool mark_dirty)
__bio_release_pages(bio, mark_dirty);
}
-extern const char *bio_devname(struct bio *bio, char *buffer);
-
#define bio_dev(bio) \
disk_devt((bio)->bi_bdev->bd_disk)
@@ -463,13 +514,6 @@ static inline void bio_set_dev(struct bio *bio, struct block_device *bdev)
bio_associate_blkg(bio);
}
-static inline void bio_copy_dev(struct bio *dst, struct bio *src)
-{
- bio_clear_flag(dst, BIO_REMAPPED);
- dst->bi_bdev = src->bi_bdev;
- bio_clone_blkg_association(dst, src);
-}
-
/*
* BIO list management for use by remapping drivers (e.g. DM or MD) and loop.
*
@@ -738,6 +782,13 @@ static inline void bio_set_polled(struct bio *bio, struct kiocb *kiocb)
bio->bi_opf |= REQ_NOWAIT;
}
-struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp);
+static inline void bio_clear_polled(struct bio *bio)
+{
+ /* can't support alloc cache if we turn off polling */
+ bio->bi_opf &= ~(REQ_POLLED | REQ_ALLOC_CACHE);
+}
+
+struct bio *blk_next_bio(struct bio *bio, struct block_device *bdev,
+ unsigned int nr_pages, unsigned int opf, gfp_t gfp);
#endif /* __LINUX_BIO_H */
diff --git a/include/linux/bitfield.h b/include/linux/bitfield.h
index 4e035aca6f7e..c9be1657f03d 100644
--- a/include/linux/bitfield.h
+++ b/include/linux/bitfield.h
@@ -19,6 +19,9 @@
*
* Example:
*
+ * #include <linux/bitfield.h>
+ * #include <linux/bits.h>
+ *
* #define REG_FIELD_A GENMASK(6, 0)
* #define REG_FIELD_B BIT(7)
* #define REG_FIELD_C GENMASK(15, 8)
@@ -41,6 +44,22 @@
#define __bf_shf(x) (__builtin_ffsll(x) - 1)
+#define __scalar_type_to_unsigned_cases(type) \
+ unsigned type: (unsigned type)0, \
+ signed type: (unsigned type)0
+
+#define __unsigned_scalar_typeof(x) typeof( \
+ _Generic((x), \
+ char: (unsigned char)0, \
+ __scalar_type_to_unsigned_cases(char), \
+ __scalar_type_to_unsigned_cases(short), \
+ __scalar_type_to_unsigned_cases(int), \
+ __scalar_type_to_unsigned_cases(long), \
+ __scalar_type_to_unsigned_cases(long long), \
+ default: (x)))
+
+#define __bf_cast_unsigned(type, x) ((__unsigned_scalar_typeof(type))(x))
+
#define __BF_FIELD_CHECK(_mask, _reg, _val, _pfx) \
({ \
BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask), \
@@ -49,7 +68,8 @@
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
~((_mask) >> __bf_shf(_mask)) & (_val) : 0, \
_pfx "value too large for the field"); \
- BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \
+ BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
+ __bf_cast_unsigned(_reg, ~0ull), \
_pfx "type of reg too small for mask"); \
__BUILD_BUG_ON_NOT_POWER_OF_2((_mask) + \
(1ULL << __bf_shf(_mask))); \
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index a241dcf50f39..2e6cd5681040 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -6,6 +6,7 @@
#include <linux/align.h>
#include <linux/bitops.h>
+#include <linux/find.h>
#include <linux/limits.h>
#include <linux/string.h>
#include <linux/types.h>
@@ -54,12 +55,6 @@ struct device;
* bitmap_clear(dst, pos, nbits) Clear specified bit area
* bitmap_find_next_zero_area(buf, len, pos, n, mask) Find bit free area
* bitmap_find_next_zero_area_off(buf, len, pos, n, mask, mask_off) as above
- * bitmap_next_clear_region(map, &start, &end, nbits) Find next clear region
- * bitmap_next_set_region(map, &start, &end, nbits) Find next set region
- * bitmap_for_each_clear_region(map, rs, re, start, end)
- * Iterate over all clear regions
- * bitmap_for_each_set_region(map, rs, re, start, end)
- * Iterate over all set regions
* bitmap_shift_right(dst, src, n, nbits) *dst = *src >> n
* bitmap_shift_left(dst, src, n, nbits) *dst = *src << n
* bitmap_cut(dst, src, first, n, nbits) Cut n bits from first, copy rest
@@ -77,6 +72,8 @@ struct device;
* bitmap_allocate_region(bitmap, pos, order) Allocate specified bit region
* bitmap_from_arr32(dst, buf, nbits) Copy nbits from u32[] buf to dst
* bitmap_to_arr32(buf, src, nbits) Copy nbits from buf to u32[] dst
+ * bitmap_to_arr64(buf, src, nbits) Copy nbits from buf to u64[] dst
+ * bitmap_to_arr64(buf, src, nbits) Copy nbits from buf to u64[] dst
* bitmap_get_value8(map, start) Get 8bit value from map at start
* bitmap_set_value8(map, value, start) Set 8bit value to map at start
*
@@ -137,8 +134,8 @@ unsigned long *devm_bitmap_zalloc(struct device *dev,
* lib/bitmap.c provides these functions:
*/
-int __bitmap_equal(const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int nbits);
+bool __bitmap_equal(const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int nbits);
bool __pure __bitmap_or_equal(const unsigned long *src1,
const unsigned long *src2,
const unsigned long *src3,
@@ -162,10 +159,10 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
void __bitmap_replace(unsigned long *dst,
const unsigned long *old, const unsigned long *new,
const unsigned long *mask, unsigned int nbits);
-int __bitmap_intersects(const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int nbits);
-int __bitmap_subset(const unsigned long *bitmap1,
- const unsigned long *bitmap2, unsigned int nbits);
+bool __bitmap_intersects(const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int nbits);
+bool __bitmap_subset(const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int nbits);
int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
void __bitmap_set(unsigned long *map, unsigned int start, int len);
void __bitmap_clear(unsigned long *map, unsigned int start, int len);
@@ -269,8 +266,12 @@ static inline void bitmap_copy_clear_tail(unsigned long *dst,
}
/*
- * On 32-bit systems bitmaps are represented as u32 arrays internally, and
- * therefore conversion is not needed when copying data from/to arrays of u32.
+ * On 32-bit systems bitmaps are represented as u32 arrays internally. On LE64
+ * machines the order of hi and lo parts of numbers match the bitmap structure.
+ * In both cases conversion is not needed when copying data from/to arrays of
+ * u32. But in LE64 case, typecast in bitmap_copy_clear_tail() may lead
+ * to out-of-bound access. To avoid that, both LE and BE variants of 64-bit
+ * architectures are not using bitmap_copy_clear_tail().
*/
#if BITS_PER_LONG == 64
void bitmap_from_arr32(unsigned long *bitmap, const u32 *buf,
@@ -286,6 +287,22 @@ void bitmap_to_arr32(u32 *buf, const unsigned long *bitmap,
(const unsigned long *) (bitmap), (nbits))
#endif
+/*
+ * On 64-bit systems bitmaps are represented as u64 arrays internally. On LE32
+ * machines the order of hi and lo parts of numbers match the bitmap structure.
+ * In both cases conversion is not needed when copying data from/to arrays of
+ * u64.
+ */
+#if (BITS_PER_LONG == 32) && defined(__BIG_ENDIAN)
+void bitmap_from_arr64(unsigned long *bitmap, const u64 *buf, unsigned int nbits);
+void bitmap_to_arr64(u64 *buf, const unsigned long *bitmap, unsigned int nbits);
+#else
+#define bitmap_from_arr64(bitmap, buf, nbits) \
+ bitmap_copy_clear_tail((unsigned long *)(bitmap), (const unsigned long *)(buf), (nbits))
+#define bitmap_to_arr64(buf, bitmap, nbits) \
+ bitmap_copy_clear_tail((unsigned long *)(buf), (const unsigned long *)(bitmap), (nbits))
+#endif
+
static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, unsigned int nbits)
{
@@ -336,8 +353,8 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr
#endif
#define BITMAP_MEM_MASK (BITMAP_MEM_ALIGNMENT - 1)
-static inline int bitmap_equal(const unsigned long *src1,
- const unsigned long *src2, unsigned int nbits)
+static inline bool bitmap_equal(const unsigned long *src1,
+ const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
return !((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits));
@@ -367,8 +384,9 @@ static inline bool bitmap_or_equal(const unsigned long *src1,
return !(((*src1 | *src2) ^ *src3) & BITMAP_LAST_WORD_MASK(nbits));
}
-static inline int bitmap_intersects(const unsigned long *src1,
- const unsigned long *src2, unsigned int nbits)
+static inline bool bitmap_intersects(const unsigned long *src1,
+ const unsigned long *src2,
+ unsigned int nbits)
{
if (small_const_nbits(nbits))
return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;
@@ -376,8 +394,8 @@ static inline int bitmap_intersects(const unsigned long *src1,
return __bitmap_intersects(src1, src2, nbits);
}
-static inline int bitmap_subset(const unsigned long *src1,
- const unsigned long *src2, unsigned int nbits)
+static inline bool bitmap_subset(const unsigned long *src1,
+ const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits));
@@ -466,14 +484,6 @@ static inline void bitmap_replace(unsigned long *dst,
__bitmap_replace(dst, old, new, mask, nbits);
}
-static inline void bitmap_next_clear_region(unsigned long *bitmap,
- unsigned int *rs, unsigned int *re,
- unsigned int end)
-{
- *rs = find_next_zero_bit(bitmap, end, *rs);
- *re = find_next_bit(bitmap, end, *rs + 1);
-}
-
static inline void bitmap_next_set_region(unsigned long *bitmap,
unsigned int *rs, unsigned int *re,
unsigned int end)
@@ -482,25 +492,6 @@ static inline void bitmap_next_set_region(unsigned long *bitmap,
*re = find_next_zero_bit(bitmap, end, *rs + 1);
}
-/*
- * Bitmap region iterators. Iterates over the bitmap between [@start, @end).
- * @rs and @re should be integer variables and will be set to start and end
- * index of the current clear or set region.
- */
-#define bitmap_for_each_clear_region(bitmap, rs, re, start, end) \
- for ((rs) = (start), \
- bitmap_next_clear_region((bitmap), &(rs), &(re), (end)); \
- (rs) < (re); \
- (rs) = (re) + 1, \
- bitmap_next_clear_region((bitmap), &(rs), &(re), (end)))
-
-#define bitmap_for_each_set_region(bitmap, rs, re, start, end) \
- for ((rs) = (start), \
- bitmap_next_set_region((bitmap), &(rs), &(re), (end)); \
- (rs) < (re); \
- (rs) = (re) + 1, \
- bitmap_next_set_region((bitmap), &(rs), &(re), (end)))
-
/**
* BITMAP_FROM_U64() - Represent u64 value in the format suitable for bitmap.
* @n: u64 value
@@ -546,10 +537,7 @@ static inline void bitmap_next_set_region(unsigned long *bitmap,
*/
static inline void bitmap_from_u64(unsigned long *dst, u64 mask)
{
- dst[0] = mask & ULONG_MAX;
-
- if (sizeof(mask) > sizeof(unsigned long))
- dst[1] = mask >> 32;
+ bitmap_from_arr64(dst, &mask, 64);
}
/**
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 5e62e2383b7f..7aaed501f768 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -32,40 +32,6 @@ extern unsigned long __sw_hweight64(__u64 w);
*/
#include <asm/bitops.h>
-#define for_each_set_bit(bit, addr, size) \
- for ((bit) = find_first_bit((addr), (size)); \
- (bit) < (size); \
- (bit) = find_next_bit((addr), (size), (bit) + 1))
-
-/* same as for_each_set_bit() but use bit as value to start with */
-#define for_each_set_bit_from(bit, addr, size) \
- for ((bit) = find_next_bit((addr), (size), (bit)); \
- (bit) < (size); \
- (bit) = find_next_bit((addr), (size), (bit) + 1))
-
-#define for_each_clear_bit(bit, addr, size) \
- for ((bit) = find_first_zero_bit((addr), (size)); \
- (bit) < (size); \
- (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
-
-/* same as for_each_clear_bit() but use bit as value to start with */
-#define for_each_clear_bit_from(bit, addr, size) \
- for ((bit) = find_next_zero_bit((addr), (size), (bit)); \
- (bit) < (size); \
- (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
-
-/**
- * for_each_set_clump8 - iterate over bitmap for each 8-bit clump with set bits
- * @start: bit offset to start search and to store the current iteration offset
- * @clump: location to store copy of current 8-bit clump
- * @bits: bitmap address to base the search on
- * @size: bitmap size in number of bits
- */
-#define for_each_set_clump8(start, clump, bits, size) \
- for ((start) = find_first_clump8(&(clump), (bits), (size)); \
- (start) < (size); \
- (start) = find_next_clump8(&(clump), (bits), (size), (start) + 8))
-
static inline int get_bitmask_order(unsigned int count)
{
int order;
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index b4de2010fba5..9f40dbc65f82 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -14,713 +14,39 @@
* Nauman Rafique <nauman@google.com>
*/
-#include <linux/cgroup.h>
-#include <linux/percpu.h>
-#include <linux/percpu_counter.h>
-#include <linux/u64_stats_sync.h>
-#include <linux/seq_file.h>
-#include <linux/radix-tree.h>
-#include <linux/blkdev.h>
-#include <linux/atomic.h>
-#include <linux/kthread.h>
-#include <linux/fs.h>
+#include <linux/types.h>
-/* percpu_counter batch for blkg_[rw]stats, per-cpu drift doesn't matter */
-#define BLKG_STAT_CPU_BATCH (INT_MAX / 2)
+struct bio;
+struct cgroup_subsys_state;
+struct request_queue;
-/* Max limits for throttle policy */
-#define THROTL_IOPS_MAX UINT_MAX
#define FC_APPID_LEN 129
-
#ifdef CONFIG_BLK_CGROUP
-
-enum blkg_iostat_type {
- BLKG_IOSTAT_READ,
- BLKG_IOSTAT_WRITE,
- BLKG_IOSTAT_DISCARD,
-
- BLKG_IOSTAT_NR,
-};
-
-struct blkcg_gq;
-
-struct blkcg {
- struct cgroup_subsys_state css;
- spinlock_t lock;
- refcount_t online_pin;
-
- struct radix_tree_root blkg_tree;
- struct blkcg_gq __rcu *blkg_hint;
- struct hlist_head blkg_list;
-
- struct blkcg_policy_data *cpd[BLKCG_MAX_POLS];
-
- struct list_head all_blkcgs_node;
-#ifdef CONFIG_BLK_CGROUP_FC_APPID
- char fc_app_id[FC_APPID_LEN];
-#endif
-#ifdef CONFIG_CGROUP_WRITEBACK
- struct list_head cgwb_list;
-#endif
-};
-
-struct blkg_iostat {
- u64 bytes[BLKG_IOSTAT_NR];
- u64 ios[BLKG_IOSTAT_NR];
-};
-
-struct blkg_iostat_set {
- struct u64_stats_sync sync;
- struct blkg_iostat cur;
- struct blkg_iostat last;
-};
-
-/*
- * A blkcg_gq (blkg) is association between a block cgroup (blkcg) and a
- * request_queue (q). This is used by blkcg policies which need to track
- * information per blkcg - q pair.
- *
- * There can be multiple active blkcg policies and each blkg:policy pair is
- * represented by a blkg_policy_data which is allocated and freed by each
- * policy's pd_alloc/free_fn() methods. A policy can allocate private data
- * area by allocating larger data structure which embeds blkg_policy_data
- * at the beginning.
- */
-struct blkg_policy_data {
- /* the blkg and policy id this per-policy data belongs to */
- struct blkcg_gq *blkg;
- int plid;
-};
-
-/*
- * Policies that need to keep per-blkcg data which is independent from any
- * request_queue associated to it should implement cpd_alloc/free_fn()
- * methods. A policy can allocate private data area by allocating larger
- * data structure which embeds blkcg_policy_data at the beginning.
- * cpd_init() is invoked to let each policy handle per-blkcg data.
- */
-struct blkcg_policy_data {
- /* the blkcg and policy id this per-policy data belongs to */
- struct blkcg *blkcg;
- int plid;
-};
-
-/* association between a blk cgroup and a request queue */
-struct blkcg_gq {
- /* Pointer to the associated request_queue */
- struct request_queue *q;
- struct list_head q_node;
- struct hlist_node blkcg_node;
- struct blkcg *blkcg;
-
- /* all non-root blkcg_gq's are guaranteed to have access to parent */
- struct blkcg_gq *parent;
-
- /* reference count */
- struct percpu_ref refcnt;
-
- /* is this blkg online? protected by both blkcg and q locks */
- bool online;
-
- struct blkg_iostat_set __percpu *iostat_cpu;
- struct blkg_iostat_set iostat;
-
- struct blkg_policy_data *pd[BLKCG_MAX_POLS];
-
- spinlock_t async_bio_lock;
- struct bio_list async_bios;
- struct work_struct async_bio_work;
-
- atomic_t use_delay;
- atomic64_t delay_nsec;
- atomic64_t delay_start;
- u64 last_delay;
- int last_use;
-
- struct rcu_head rcu_head;
-};
-
-typedef struct blkcg_policy_data *(blkcg_pol_alloc_cpd_fn)(gfp_t gfp);
-typedef void (blkcg_pol_init_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef void (blkcg_pol_free_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef void (blkcg_pol_bind_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef struct blkg_policy_data *(blkcg_pol_alloc_pd_fn)(gfp_t gfp,
- struct request_queue *q, struct blkcg *blkcg);
-typedef void (blkcg_pol_init_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_online_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_offline_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_free_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_reset_pd_stats_fn)(struct blkg_policy_data *pd);
-typedef bool (blkcg_pol_stat_pd_fn)(struct blkg_policy_data *pd,
- struct seq_file *s);
-
-struct blkcg_policy {
- int plid;
- /* cgroup files for the policy */
- struct cftype *dfl_cftypes;
- struct cftype *legacy_cftypes;
-
- /* operations */
- blkcg_pol_alloc_cpd_fn *cpd_alloc_fn;
- blkcg_pol_init_cpd_fn *cpd_init_fn;
- blkcg_pol_free_cpd_fn *cpd_free_fn;
- blkcg_pol_bind_cpd_fn *cpd_bind_fn;
-
- blkcg_pol_alloc_pd_fn *pd_alloc_fn;
- blkcg_pol_init_pd_fn *pd_init_fn;
- blkcg_pol_online_pd_fn *pd_online_fn;
- blkcg_pol_offline_pd_fn *pd_offline_fn;
- blkcg_pol_free_pd_fn *pd_free_fn;
- blkcg_pol_reset_pd_stats_fn *pd_reset_stats_fn;
- blkcg_pol_stat_pd_fn *pd_stat_fn;
-};
-
-extern struct blkcg blkcg_root;
extern struct cgroup_subsys_state * const blkcg_root_css;
-extern bool blkcg_debug_stats;
-
-struct blkcg_gq *blkg_lookup_slowpath(struct blkcg *blkcg,
- struct request_queue *q, bool update_hint);
-int blkcg_init_queue(struct request_queue *q);
-void blkcg_exit_queue(struct request_queue *q);
-
-/* Blkio controller policy registration */
-int blkcg_policy_register(struct blkcg_policy *pol);
-void blkcg_policy_unregister(struct blkcg_policy *pol);
-int blkcg_activate_policy(struct request_queue *q,
- const struct blkcg_policy *pol);
-void blkcg_deactivate_policy(struct request_queue *q,
- const struct blkcg_policy *pol);
-
-const char *blkg_dev_name(struct blkcg_gq *blkg);
-void blkcg_print_blkgs(struct seq_file *sf, struct blkcg *blkcg,
- u64 (*prfill)(struct seq_file *,
- struct blkg_policy_data *, int),
- const struct blkcg_policy *pol, int data,
- bool show_total);
-u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v);
-
-struct blkg_conf_ctx {
- struct block_device *bdev;
- struct blkcg_gq *blkg;
- char *body;
-};
-
-struct block_device *blkcg_conf_open_bdev(char **inputp);
-int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
- char *input, struct blkg_conf_ctx *ctx);
-void blkg_conf_finish(struct blkg_conf_ctx *ctx);
-
-/**
- * blkcg_css - find the current css
- *
- * Find the css associated with either the kthread or the current task.
- * This may return a dying css, so it is up to the caller to use tryget logic
- * to confirm it is alive and well.
- */
-static inline struct cgroup_subsys_state *blkcg_css(void)
-{
- struct cgroup_subsys_state *css;
-
- css = kthread_blkcg();
- if (css)
- return css;
- return task_css(current, io_cgrp_id);
-}
-
-static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)
-{
- return css ? container_of(css, struct blkcg, css) : NULL;
-}
-
-/**
- * __bio_blkcg - internal, inconsistent version to get blkcg
- *
- * DO NOT USE.
- * This function is inconsistent and consequently is dangerous to use. The
- * first part of the function returns a blkcg where a reference is owned by the
- * bio. This means it does not need to be rcu protected as it cannot go away
- * with the bio owning a reference to it. However, the latter potentially gets
- * it from task_css(). This can race against task migration and the cgroup
- * dying. It is also semantically different as it must be called rcu protected
- * and is susceptible to failure when trying to get a reference to it.
- * Therefore, it is not ok to assume that *_get() will always succeed on the
- * blkcg returned here.
- */
-static inline struct blkcg *__bio_blkcg(struct bio *bio)
-{
- if (bio && bio->bi_blkg)
- return bio->bi_blkg->blkcg;
- return css_to_blkcg(blkcg_css());
-}
-/**
- * bio_blkcg - grab the blkcg associated with a bio
- * @bio: target bio
- *
- * This returns the blkcg associated with a bio, %NULL if not associated.
- * Callers are expected to either handle %NULL or know association has been
- * done prior to calling this.
- */
-static inline struct blkcg *bio_blkcg(struct bio *bio)
-{
- if (bio && bio->bi_blkg)
- return bio->bi_blkg->blkcg;
- return NULL;
-}
-
-static inline bool blk_cgroup_congested(void)
-{
- struct cgroup_subsys_state *css;
- bool ret = false;
-
- rcu_read_lock();
- css = kthread_blkcg();
- if (!css)
- css = task_css(current, io_cgrp_id);
- while (css) {
- if (atomic_read(&css->cgroup->congestion_count)) {
- ret = true;
- break;
- }
- css = css->parent;
- }
- rcu_read_unlock();
- return ret;
-}
-
-/**
- * bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg
- * @return: true if this bio needs to be submitted with the root blkg context.
- *
- * In order to avoid priority inversions we sometimes need to issue a bio as if
- * it were attached to the root blkg, and then backcharge to the actual owning
- * blkg. The idea is we do bio_blkcg() to look up the actual context for the
- * bio and attach the appropriate blkg to the bio. Then we call this helper and
- * if it is true run with the root blkg for that queue and then do any
- * backcharging to the originating cgroup once the io is complete.
- */
-static inline bool bio_issue_as_root_blkg(struct bio *bio)
-{
- return (bio->bi_opf & (REQ_META | REQ_SWAP)) != 0;
-}
-
-/**
- * blkcg_parent - get the parent of a blkcg
- * @blkcg: blkcg of interest
- *
- * Return the parent blkcg of @blkcg. Can be called anytime.
- */
-static inline struct blkcg *blkcg_parent(struct blkcg *blkcg)
-{
- return css_to_blkcg(blkcg->css.parent);
-}
-
-/**
- * __blkg_lookup - internal version of blkg_lookup()
- * @blkcg: blkcg of interest
- * @q: request_queue of interest
- * @update_hint: whether to update lookup hint with the result or not
- *
- * This is internal version and shouldn't be used by policy
- * implementations. Looks up blkgs for the @blkcg - @q pair regardless of
- * @q's bypass state. If @update_hint is %true, the caller should be
- * holding @q->queue_lock and lookup hint is updated on success.
- */
-static inline struct blkcg_gq *__blkg_lookup(struct blkcg *blkcg,
- struct request_queue *q,
- bool update_hint)
-{
- struct blkcg_gq *blkg;
-
- if (blkcg == &blkcg_root)
- return q->root_blkg;
-
- blkg = rcu_dereference(blkcg->blkg_hint);
- if (blkg && blkg->q == q)
- return blkg;
-
- return blkg_lookup_slowpath(blkcg, q, update_hint);
-}
-
-/**
- * blkg_lookup - lookup blkg for the specified blkcg - q pair
- * @blkcg: blkcg of interest
- * @q: request_queue of interest
- *
- * Lookup blkg for the @blkcg - @q pair. This function should be called
- * under RCU read lock.
- */
-static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg,
- struct request_queue *q)
-{
- WARN_ON_ONCE(!rcu_read_lock_held());
- return __blkg_lookup(blkcg, q, false);
-}
-
-/**
- * blk_queue_root_blkg - return blkg for the (blkcg_root, @q) pair
- * @q: request_queue of interest
- *
- * Lookup blkg for @q at the root level. See also blkg_lookup().
- */
-static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
-{
- return q->root_blkg;
-}
-
-/**
- * blkg_to_pdata - get policy private data
- * @blkg: blkg of interest
- * @pol: policy of interest
- *
- * Return pointer to private data associated with the @blkg-@pol pair.
- */
-static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
- struct blkcg_policy *pol)
-{
- return blkg ? blkg->pd[pol->plid] : NULL;
-}
-
-static inline struct blkcg_policy_data *blkcg_to_cpd(struct blkcg *blkcg,
- struct blkcg_policy *pol)
-{
- return blkcg ? blkcg->cpd[pol->plid] : NULL;
-}
-
-/**
- * pdata_to_blkg - get blkg associated with policy private data
- * @pd: policy private data of interest
- *
- * @pd is policy private data. Determine the blkg it's associated with.
- */
-static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd)
-{
- return pd ? pd->blkg : NULL;
-}
-
-static inline struct blkcg *cpd_to_blkcg(struct blkcg_policy_data *cpd)
-{
- return cpd ? cpd->blkcg : NULL;
-}
-
-extern void blkcg_destroy_blkgs(struct blkcg *blkcg);
-
-/**
- * blkcg_pin_online - pin online state
- * @blkcg: blkcg of interest
- *
- * While pinned, a blkcg is kept online. This is primarily used to
- * impedance-match blkg and cgwb lifetimes so that blkg doesn't go offline
- * while an associated cgwb is still active.
- */
-static inline void blkcg_pin_online(struct blkcg *blkcg)
-{
- refcount_inc(&blkcg->online_pin);
-}
-
-/**
- * blkcg_unpin_online - unpin online state
- * @blkcg: blkcg of interest
- *
- * This is primarily used to impedance-match blkg and cgwb lifetimes so
- * that blkg doesn't go offline while an associated cgwb is still active.
- * When this count goes to zero, all active cgwbs have finished so the
- * blkcg can continue destruction by calling blkcg_destroy_blkgs().
- */
-static inline void blkcg_unpin_online(struct blkcg *blkcg)
-{
- do {
- if (!refcount_dec_and_test(&blkcg->online_pin))
- break;
- blkcg_destroy_blkgs(blkcg);
- blkcg = blkcg_parent(blkcg);
- } while (blkcg);
-}
-
-/**
- * blkg_path - format cgroup path of blkg
- * @blkg: blkg of interest
- * @buf: target buffer
- * @buflen: target buffer length
- *
- * Format the path of the cgroup of @blkg into @buf.
- */
-static inline int blkg_path(struct blkcg_gq *blkg, char *buf, int buflen)
-{
- return cgroup_path(blkg->blkcg->css.cgroup, buf, buflen);
-}
-
-/**
- * blkg_get - get a blkg reference
- * @blkg: blkg to get
- *
- * The caller should be holding an existing reference.
- */
-static inline void blkg_get(struct blkcg_gq *blkg)
-{
- percpu_ref_get(&blkg->refcnt);
-}
-
-/**
- * blkg_tryget - try and get a blkg reference
- * @blkg: blkg to get
- *
- * This is for use when doing an RCU lookup of the blkg. We may be in the midst
- * of freeing this blkg, so we can only use it if the refcnt is not zero.
- */
-static inline bool blkg_tryget(struct blkcg_gq *blkg)
-{
- return blkg && percpu_ref_tryget(&blkg->refcnt);
-}
-
-/**
- * blkg_put - put a blkg reference
- * @blkg: blkg to put
- */
-static inline void blkg_put(struct blkcg_gq *blkg)
-{
- percpu_ref_put(&blkg->refcnt);
-}
-
-/**
- * blkg_for_each_descendant_pre - pre-order walk of a blkg's descendants
- * @d_blkg: loop cursor pointing to the current descendant
- * @pos_css: used for iteration
- * @p_blkg: target blkg to walk descendants of
- *
- * Walk @c_blkg through the descendants of @p_blkg. Must be used with RCU
- * read locked. If called under either blkcg or queue lock, the iteration
- * is guaranteed to include all and only online blkgs. The caller may
- * update @pos_css by calling css_rightmost_descendant() to skip subtree.
- * @p_blkg is included in the iteration and the first node to be visited.
- */
-#define blkg_for_each_descendant_pre(d_blkg, pos_css, p_blkg) \
- css_for_each_descendant_pre((pos_css), &(p_blkg)->blkcg->css) \
- if (((d_blkg) = __blkg_lookup(css_to_blkcg(pos_css), \
- (p_blkg)->q, false)))
-
-/**
- * blkg_for_each_descendant_post - post-order walk of a blkg's descendants
- * @d_blkg: loop cursor pointing to the current descendant
- * @pos_css: used for iteration
- * @p_blkg: target blkg to walk descendants of
- *
- * Similar to blkg_for_each_descendant_pre() but performs post-order
- * traversal instead. Synchronization rules are the same. @p_blkg is
- * included in the iteration and the last node to be visited.
- */
-#define blkg_for_each_descendant_post(d_blkg, pos_css, p_blkg) \
- css_for_each_descendant_post((pos_css), &(p_blkg)->blkcg->css) \
- if (((d_blkg) = __blkg_lookup(css_to_blkcg(pos_css), \
- (p_blkg)->q, false)))
-
-bool __blkcg_punt_bio_submit(struct bio *bio);
-
-static inline bool blkcg_punt_bio_submit(struct bio *bio)
-{
- if (bio->bi_opf & REQ_CGROUP_PUNT)
- return __blkcg_punt_bio_submit(bio);
- else
- return false;
-}
-
-static inline void blkcg_bio_issue_init(struct bio *bio)
-{
- bio_issue_init(&bio->bi_issue, bio_sectors(bio));
-}
-
-static inline void blkcg_use_delay(struct blkcg_gq *blkg)
-{
- if (WARN_ON_ONCE(atomic_read(&blkg->use_delay) < 0))
- return;
- if (atomic_add_return(1, &blkg->use_delay) == 1)
- atomic_inc(&blkg->blkcg->css.cgroup->congestion_count);
-}
-
-static inline int blkcg_unuse_delay(struct blkcg_gq *blkg)
-{
- int old = atomic_read(&blkg->use_delay);
-
- if (WARN_ON_ONCE(old < 0))
- return 0;
- if (old == 0)
- return 0;
-
- /*
- * We do this song and dance because we can race with somebody else
- * adding or removing delay. If we just did an atomic_dec we'd end up
- * negative and we'd already be in trouble. We need to subtract 1 and
- * then check to see if we were the last delay so we can drop the
- * congestion count on the cgroup.
- */
- while (old) {
- int cur = atomic_cmpxchg(&blkg->use_delay, old, old - 1);
- if (cur == old)
- break;
- old = cur;
- }
-
- if (old == 0)
- return 0;
- if (old == 1)
- atomic_dec(&blkg->blkcg->css.cgroup->congestion_count);
- return 1;
-}
-
-/**
- * blkcg_set_delay - Enable allocator delay mechanism with the specified delay amount
- * @blkg: target blkg
- * @delay: delay duration in nsecs
- *
- * When enabled with this function, the delay is not decayed and must be
- * explicitly cleared with blkcg_clear_delay(). Must not be mixed with
- * blkcg_[un]use_delay() and blkcg_add_delay() usages.
- */
-static inline void blkcg_set_delay(struct blkcg_gq *blkg, u64 delay)
-{
- int old = atomic_read(&blkg->use_delay);
-
- /* We only want 1 person setting the congestion count for this blkg. */
- if (!old && atomic_cmpxchg(&blkg->use_delay, old, -1) == old)
- atomic_inc(&blkg->blkcg->css.cgroup->congestion_count);
-
- atomic64_set(&blkg->delay_nsec, delay);
-}
-
-/**
- * blkcg_clear_delay - Disable allocator delay mechanism
- * @blkg: target blkg
- *
- * Disable use_delay mechanism. See blkcg_set_delay().
- */
-static inline void blkcg_clear_delay(struct blkcg_gq *blkg)
-{
- int old = atomic_read(&blkg->use_delay);
-
- /* We only want 1 person clearing the congestion count for this blkg. */
- if (old && atomic_cmpxchg(&blkg->use_delay, old, 0) == old)
- atomic_dec(&blkg->blkcg->css.cgroup->congestion_count);
-}
-
-void blk_cgroup_bio_start(struct bio *bio);
-void blkcg_add_delay(struct blkcg_gq *blkg, u64 now, u64 delta);
void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay);
void blkcg_maybe_throttle_current(void);
-#else /* CONFIG_BLK_CGROUP */
-
-struct blkcg {
-};
-
-struct blkg_policy_data {
-};
-
-struct blkcg_policy_data {
-};
+bool blk_cgroup_congested(void);
+void blkcg_pin_online(struct cgroup_subsys_state *blkcg_css);
+void blkcg_unpin_online(struct cgroup_subsys_state *blkcg_css);
+struct list_head *blkcg_get_cgwb_list(struct cgroup_subsys_state *css);
+struct cgroup_subsys_state *bio_blkcg_css(struct bio *bio);
-struct blkcg_gq {
-};
-
-struct blkcg_policy {
-};
+#else /* CONFIG_BLK_CGROUP */
#define blkcg_root_css ((struct cgroup_subsys_state *)ERR_PTR(-EINVAL))
static inline void blkcg_maybe_throttle_current(void) { }
static inline bool blk_cgroup_congested(void) { return false; }
-
-#ifdef CONFIG_BLOCK
-
static inline void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) { }
-
-static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, void *key) { return NULL; }
-static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
-{ return NULL; }
-static inline int blkcg_init_queue(struct request_queue *q) { return 0; }
-static inline void blkcg_exit_queue(struct request_queue *q) { }
-static inline int blkcg_policy_register(struct blkcg_policy *pol) { return 0; }
-static inline void blkcg_policy_unregister(struct blkcg_policy *pol) { }
-static inline int blkcg_activate_policy(struct request_queue *q,
- const struct blkcg_policy *pol) { return 0; }
-static inline void blkcg_deactivate_policy(struct request_queue *q,
- const struct blkcg_policy *pol) { }
-
-static inline struct blkcg *__bio_blkcg(struct bio *bio) { return NULL; }
-static inline struct blkcg *bio_blkcg(struct bio *bio) { return NULL; }
-
-static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
- struct blkcg_policy *pol) { return NULL; }
-static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd) { return NULL; }
-static inline char *blkg_path(struct blkcg_gq *blkg) { return NULL; }
-static inline void blkg_get(struct blkcg_gq *blkg) { }
-static inline void blkg_put(struct blkcg_gq *blkg) { }
-
-static inline bool blkcg_punt_bio_submit(struct bio *bio) { return false; }
-static inline void blkcg_bio_issue_init(struct bio *bio) { }
-static inline void blk_cgroup_bio_start(struct bio *bio) { }
-
-#define blk_queue_for_each_rl(rl, q) \
- for ((rl) = &(q)->root_rl; (rl); (rl) = NULL)
-
-#endif /* CONFIG_BLOCK */
-#endif /* CONFIG_BLK_CGROUP */
-
-#ifdef CONFIG_BLK_CGROUP_FC_APPID
-/*
- * Sets the fc_app_id field associted to blkcg
- * @app_id: application identifier
- * @cgrp_id: cgroup id
- * @app_id_len: size of application identifier
- */
-static inline int blkcg_set_fc_appid(char *app_id, u64 cgrp_id, size_t app_id_len)
-{
- struct cgroup *cgrp;
- struct cgroup_subsys_state *css;
- struct blkcg *blkcg;
- int ret = 0;
-
- if (app_id_len > FC_APPID_LEN)
- return -EINVAL;
-
- cgrp = cgroup_get_from_id(cgrp_id);
- if (!cgrp)
- return -ENOENT;
- css = cgroup_get_e_css(cgrp, &io_cgrp_subsys);
- if (!css) {
- ret = -ENOENT;
- goto out_cgrp_put;
- }
- blkcg = css_to_blkcg(css);
- /*
- * There is a slight race condition on setting the appid.
- * Worst case an I/O may not find the right id.
- * This is no different from the I/O we let pass while obtaining
- * the vmid from the fabric.
- * Adding the overhead of a lock is not necessary.
- */
- strlcpy(blkcg->fc_app_id, app_id, app_id_len);
- css_put(css);
-out_cgrp_put:
- cgroup_put(cgrp);
- return ret;
-}
-
-/**
- * blkcg_get_fc_appid - get the fc app identifier associated with a bio
- * @bio: target bio
- *
- * On success return the fc_app_id, on failure return NULL
- */
-static inline char *blkcg_get_fc_appid(struct bio *bio)
+static inline struct cgroup_subsys_state *bio_blkcg_css(struct bio *bio)
{
- if (bio && bio->bi_blkg &&
- (bio->bi_blkg->blkcg->fc_app_id[0] != '\0'))
- return bio->bi_blkg->blkcg->fc_app_id;
return NULL;
}
-#else
-static inline int blkcg_set_fc_appid(char *buf, u64 id, size_t len) { return -EINVAL; }
-static inline char *blkcg_get_fc_appid(struct bio *bio) { return NULL; }
-#endif /*CONFIG_BLK_CGROUP_FC_APPID*/
+#endif /* CONFIG_BLK_CGROUP */
+
+int blkcg_set_fc_appid(char *app_id, u64 cgrp_id, size_t app_id_len);
+char *blkcg_get_fc_appid(struct bio *bio);
+
#endif /* _BLK_CGROUP_H */
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h
index 8a038ea0717e..378b2459efe2 100644
--- a/include/linux/blk-integrity.h
+++ b/include/linux/blk-integrity.h
@@ -19,6 +19,7 @@ struct blk_integrity_iter {
sector_t seed;
unsigned int data_size;
unsigned short interval;
+ unsigned char tuple_size;
const char *disk_name;
};
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 2949d9ac7484..e2d9daf7e8dd 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -4,7 +4,6 @@
#include <linux/blkdev.h>
#include <linux/sbitmap.h>
-#include <linux/srcu.h>
#include <linux/lockdep.h>
#include <linux/scatterlist.h>
#include <linux/prefetch.h>
@@ -100,7 +99,6 @@ struct request {
struct request *rq_next;
};
- struct gendisk *rq_disk;
struct block_device *part;
#ifdef CONFIG_BLK_RQ_ALLOC_TIME
/* Time that the first bio started allocating this request. */
@@ -140,7 +138,7 @@ struct request {
unsigned short ioprio;
enum mq_rq_state state;
- refcount_t ref;
+ atomic_t ref;
unsigned long deadline;
@@ -165,7 +163,6 @@ struct request {
struct rb_node rb_node; /* sort/lookup */
struct bio_vec special_vec;
void *completion_data;
- int error_count; /* for legacy drivers, don't use */
};
@@ -218,6 +215,56 @@ static inline unsigned short req_get_ioprio(struct request *req)
#define rq_dma_dir(rq) \
(op_is_write(req_op(rq)) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)
+#define rq_list_add(listptr, rq) do { \
+ (rq)->rq_next = *(listptr); \
+ *(listptr) = rq; \
+} while (0)
+
+#define rq_list_pop(listptr) \
+({ \
+ struct request *__req = NULL; \
+ if ((listptr) && *(listptr)) { \
+ __req = *(listptr); \
+ *(listptr) = __req->rq_next; \
+ } \
+ __req; \
+})
+
+#define rq_list_peek(listptr) \
+({ \
+ struct request *__req = NULL; \
+ if ((listptr) && *(listptr)) \
+ __req = *(listptr); \
+ __req; \
+})
+
+#define rq_list_for_each(listptr, pos) \
+ for (pos = rq_list_peek((listptr)); pos; pos = rq_list_next(pos))
+
+#define rq_list_for_each_safe(listptr, pos, nxt) \
+ for (pos = rq_list_peek((listptr)), nxt = rq_list_next(pos); \
+ pos; pos = nxt, nxt = pos ? rq_list_next(pos) : NULL)
+
+#define rq_list_next(rq) (rq)->rq_next
+#define rq_list_empty(list) ((list) == (struct request *) NULL)
+
+/**
+ * rq_list_move() - move a struct request from one list to another
+ * @src: The source list @rq is currently in
+ * @dst: The destination list that @rq will be appended to
+ * @rq: The request to move
+ * @prev: The request preceding @rq in @src (NULL if @rq is the head)
+ */
+static inline void rq_list_move(struct request **src, struct request **dst,
+ struct request *rq, struct request *prev)
+{
+ if (prev)
+ prev->rq_next = rq->rq_next;
+ else
+ *src = rq->rq_next;
+ rq_list_add(dst, rq);
+}
+
enum blk_eh_timer_return {
BLK_EH_DONE, /* drivers has completed the command */
BLK_EH_RESET_TIMER, /* reset timer and try again */
@@ -376,13 +423,6 @@ struct blk_mq_hw_ctx {
* q->unused_hctx_list.
*/
struct list_head hctx_list;
-
- /**
- * @srcu: Sleepable RCU. Use as lock when type of the hardware queue is
- * blocking (BLK_MQ_F_BLOCKING). Must be the last member - see also
- * blk_mq_hw_ctx_size().
- */
- struct srcu_struct srcu[];
};
/**
@@ -479,8 +519,6 @@ struct blk_mq_queue_data {
bool last;
};
-typedef bool (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *,
- bool);
typedef bool (busy_tag_iter_fn)(struct request *, void *, bool);
/**
@@ -504,6 +542,14 @@ struct blk_mq_ops {
void (*commit_rqs)(struct blk_mq_hw_ctx *);
/**
+ * @queue_rqs: Queue a list of new requests. Driver is guaranteed
+ * that each request belongs to the same queue. If the driver doesn't
+ * empty the @rqlist completely, then the rest will be queued
+ * individually by the block layer upon return.
+ */
+ void (*queue_rqs)(struct request **rqlist);
+
+ /**
* @get_budget: Reserve budget before queue request, once .queue_rq is
* run, it is driver's responsibility to release the
* reserved budget. Also we have to handle failure case
@@ -752,6 +798,17 @@ static inline void blk_mq_set_request_complete(struct request *rq)
WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
}
+/*
+ * Complete the request directly instead of deferring it to softirq or
+ * completing it another CPU. Useful in preemptible instead of an interrupt.
+ */
+static inline void blk_mq_complete_request_direct(struct request *rq,
+ void (*complete)(struct request *rq))
+{
+ WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
+ complete(rq);
+}
+
void blk_mq_start_request(struct request *rq);
void blk_mq_end_request(struct request *rq, blk_status_t error);
void __blk_mq_end_request(struct request *rq, blk_status_t error);
@@ -859,8 +916,7 @@ static inline void *blk_mq_rq_to_pdu(struct request *rq)
}
#define queue_for_each_hw_ctx(q, hctx, i) \
- for ((i) = 0; (i) < (q)->nr_hw_queues && \
- ({ hctx = (q)->queue_hw_ctx[i]; 1; }); (i)++)
+ xa_for_each(&(q)->hctx_table, (i), (hctx))
#define hctx_for_each_ctx(hctx, ctx, i) \
for ((i) = 0; (i) < (hctx)->nr_ctx && \
@@ -879,9 +935,6 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio,
rq->__data_len = bio->bi_iter.bi_size;
rq->bio = rq->biotail = bio;
rq->ioprio = bio_prio(bio);
-
- if (bio->bi_bdev)
- rq->rq_disk = bio->bi_bdev->bd_disk;
}
void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
@@ -897,8 +950,7 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
struct bio_set *bs, gfp_t gfp_mask,
int (*bio_ctr)(struct bio *, struct bio *, void *), void *data);
void blk_rq_unprep_clone(struct request *rq);
-blk_status_t blk_insert_cloned_request(struct request_queue *q,
- struct request *rq);
+blk_status_t blk_insert_cloned_request(struct request *rq);
struct rq_map_data {
struct page **pages;
@@ -917,10 +969,8 @@ int blk_rq_unmap_user(struct bio *);
int blk_rq_map_kern(struct request_queue *, struct request *, void *,
unsigned int, gfp_t);
int blk_rq_append_bio(struct request *rq, struct bio *bio);
-void blk_execute_rq_nowait(struct gendisk *, struct request *, int,
- rq_end_io_fn *);
-blk_status_t blk_execute_rq(struct gendisk *bd_disk, struct request *rq,
- int at_head);
+void blk_execute_rq_nowait(struct request *rq, bool at_head);
+blk_status_t blk_execute_rq(struct request *rq, bool at_head);
struct req_iterator {
struct bvec_iter iter;
@@ -947,7 +997,6 @@ struct req_iterator {
* blk_rq_pos() : the current sector
* blk_rq_bytes() : bytes left in the entire request
* blk_rq_cur_bytes() : bytes left in the current segment
- * blk_rq_err_bytes() : bytes left till the next error boundary
* blk_rq_sectors() : sectors left in the entire request
* blk_rq_cur_sectors() : sectors left in the current segment
* blk_rq_stats_sectors() : sectors of the entire request used for stats
@@ -971,8 +1020,6 @@ static inline int blk_rq_cur_bytes(const struct request *rq)
return bio_iovec(rq->bio).bv_len;
}
-unsigned int blk_rq_err_bytes(const struct request *rq);
-
static inline unsigned int blk_rq_sectors(const struct request *rq)
{
return blk_rq_bytes(rq) >> SECTOR_SHIFT;
@@ -1135,14 +1182,4 @@ static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
}
#endif /* CONFIG_BLK_DEV_ZONED */
-#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-# error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"
-#endif
-#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-void rq_flush_dcache_pages(struct request *rq);
-#else
-static inline void rq_flush_dcache_pages(struct request *rq)
-{
-}
-#endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */
#endif /* BLK_MQ_H */
diff --git a/include/linux/blk-pm.h b/include/linux/blk-pm.h
index b80c65aba249..2580e05a8ab6 100644
--- a/include/linux/blk-pm.h
+++ b/include/linux/blk-pm.h
@@ -14,7 +14,7 @@ extern void blk_pm_runtime_init(struct request_queue *q, struct device *dev);
extern int blk_pre_runtime_suspend(struct request_queue *q);
extern void blk_post_runtime_suspend(struct request_queue *q, int err);
extern void blk_pre_runtime_resume(struct request_queue *q);
-extern void blk_post_runtime_resume(struct request_queue *q, int err);
+extern void blk_post_runtime_resume(struct request_queue *q);
extern void blk_set_runtime_active(struct request_queue *q);
#else
static inline void blk_pm_runtime_init(struct request_queue *q,
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index fe065c394fff..a24d4078fb21 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -44,7 +44,7 @@ struct block_device {
unsigned long bd_stamp;
bool bd_read_only; /* read-only policy */
dev_t bd_dev;
- int bd_openers;
+ atomic_t bd_openers;
struct inode * bd_inode; /* will die */
struct super_block * bd_super;
void * bd_claiming;
@@ -85,8 +85,10 @@ struct block_device {
*/
#if defined(CONFIG_ALPHA) && !defined(__alpha_bwx__)
typedef u32 __bitwise blk_status_t;
+typedef u32 blk_short_t;
#else
typedef u8 __bitwise blk_status_t;
+typedef u16 blk_short_t;
#endif
#define BLK_STS_OK 0
#define BLK_STS_NOTSUPP ((__force blk_status_t)1)
@@ -103,6 +105,10 @@ typedef u8 __bitwise blk_status_t;
/* hack for device mapper, don't use elsewhere: */
#define BLK_STS_DM_REQUEUE ((__force blk_status_t)11)
+/*
+ * BLK_STS_AGAIN should only be returned if RQF_NOWAIT is set
+ * and the bio would block (cf bio_wouldblock_error())
+ */
#define BLK_STS_AGAIN ((__force blk_status_t)12)
/*
@@ -153,6 +159,13 @@ typedef u8 __bitwise blk_status_t;
*/
#define BLK_STS_ZONE_ACTIVE_RESOURCE ((__force blk_status_t)16)
+/*
+ * BLK_STS_OFFLINE is returned from the driver when the target device is offline
+ * or is being taken offline. This could help differentiate the case where a
+ * device is intentionally being shut down from a real I/O error.
+ */
+#define BLK_STS_OFFLINE ((__force blk_status_t)17)
+
/**
* blk_path_error - returns true if error may be path related
* @error: status the request was completed with
@@ -237,13 +250,11 @@ typedef unsigned int blk_qc_t;
struct bio {
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev;
- unsigned int bi_opf; /* bottom bits req flags,
- * top bits REQ_OP. Use
- * accessors.
+ unsigned int bi_opf; /* bottom bits REQ_OP, top bits
+ * req_flags.
*/
unsigned short bi_flags; /* BIO_* below */
unsigned short bi_ioprio;
- unsigned short bi_write_hint;
blk_status_t bi_status;
atomic_t __bi_remaining;
@@ -317,10 +328,10 @@ enum {
BIO_TRACE_COMPLETION, /* bio_endio() should trace the final completion
* of this bio. */
BIO_CGROUP_ACCT, /* has been accounted to a cgroup */
- BIO_TRACKED, /* set if bio goes through the rq_qos path */
+ BIO_QOS_THROTTLED, /* bio went through rq_qos throttle path */
+ BIO_QOS_MERGED, /* but went through rq_qos merge path */
BIO_REMAPPED,
BIO_ZONE_WRITE_LOCKED, /* Owns a zoned device zone write lock */
- BIO_PERCPU_CACHE, /* can participate in per-cpu alloc cache */
BIO_FLAG_LAST
};
@@ -354,8 +365,6 @@ enum req_opf {
REQ_OP_DISCARD = 3,
/* securely erase sectors */
REQ_OP_SECURE_ERASE = 5,
- /* write the same sector many times */
- REQ_OP_WRITE_SAME = 7,
/* write the zero filled sector many times */
REQ_OP_WRITE_ZEROES = 9,
/* Open a zone */
@@ -402,15 +411,17 @@ enum req_flag_bits {
* work item to avoid such priority inversions.
*/
__REQ_CGROUP_PUNT,
+ __REQ_POLLED, /* caller polls for completion using bio_poll */
+ __REQ_ALLOC_CACHE, /* allocate IO from cache if available */
+ __REQ_SWAP, /* swap I/O */
+ __REQ_DRV, /* for driver use */
- /* command specific flags for REQ_OP_WRITE_ZEROES: */
+ /*
+ * Command specific flags, keep last:
+ */
+ /* for REQ_OP_WRITE_ZEROES: */
__REQ_NOUNMAP, /* do not free blocks when zeroing */
- __REQ_POLLED, /* caller polls for completion using bio_poll */
-
- /* for driver use */
- __REQ_DRV,
- __REQ_SWAP, /* swapping request. */
__REQ_NR_BITS, /* stops here */
};
@@ -432,6 +443,7 @@ enum req_flag_bits {
#define REQ_NOUNMAP (1ULL << __REQ_NOUNMAP)
#define REQ_POLLED (1ULL << __REQ_POLLED)
+#define REQ_ALLOC_CACHE (1ULL << __REQ_ALLOC_CACHE)
#define REQ_DRV (1ULL << __REQ_DRV)
#define REQ_SWAP (1ULL << __REQ_SWAP)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bd4370baccca..bb6e3c31b3b7 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1,9 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Portions Copyright (C) 1992 Drew Eckhardt
+ */
#ifndef _LINUX_BLKDEV_H
#define _LINUX_BLKDEV_H
-#include <linux/sched.h>
-#include <linux/genhd.h>
+#include <linux/types.h>
+#include <linux/blk_types.h>
+#include <linux/device.h>
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/minmax.h>
@@ -12,10 +16,15 @@
#include <linux/wait.h>
#include <linux/bio.h>
#include <linux/gfp.h>
+#include <linux/kdev_t.h>
#include <linux/rcupdate.h>
#include <linux/percpu-refcount.h>
#include <linux/blkzoned.h>
+#include <linux/sched.h>
#include <linux/sbitmap.h>
+#include <linux/srcu.h>
+#include <linux/uuid.h>
+#include <linux/xarray.h>
struct module;
struct request_queue;
@@ -32,6 +41,10 @@ struct blk_queue_stats;
struct blk_stat_callback;
struct blk_crypto_profile;
+extern const struct device_type disk_type;
+extern struct device_type part_type;
+extern struct class block_class;
+
/* Must be consistent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16
@@ -44,7 +57,162 @@ struct blk_crypto_profile;
*/
#define BLKCG_MAX_POLS 6
-static inline int blk_validate_block_size(unsigned int bsize)
+#define DISK_MAX_PARTS 256
+#define DISK_NAME_LEN 32
+
+#define PARTITION_META_INFO_VOLNAMELTH 64
+/*
+ * Enough for the string representation of any kind of UUID plus NULL.
+ * EFI UUID is 36 characters. MSDOS UUID is 11 characters.
+ */
+#define PARTITION_META_INFO_UUIDLTH (UUID_STRING_LEN + 1)
+
+struct partition_meta_info {
+ char uuid[PARTITION_META_INFO_UUIDLTH];
+ u8 volname[PARTITION_META_INFO_VOLNAMELTH];
+};
+
+/**
+ * DOC: genhd capability flags
+ *
+ * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to
+ * removable media. When set, the device remains present even when media is not
+ * inserted. Shall not be set for devices which are removed entirely when the
+ * media is removed.
+ *
+ * ``GENHD_FL_HIDDEN``: the block device is hidden; it doesn't produce events,
+ * doesn't appear in sysfs, and can't be opened from userspace or using
+ * blkdev_get*. Used for the underlying components of multipath devices.
+ *
+ * ``GENHD_FL_NO_PART``: partition support is disabled. The kernel will not
+ * scan for partitions from add_disk, and users can't add partitions manually.
+ *
+ */
+enum {
+ GENHD_FL_REMOVABLE = 1 << 0,
+ GENHD_FL_HIDDEN = 1 << 1,
+ GENHD_FL_NO_PART = 1 << 2,
+};
+
+enum {
+ DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */
+ DISK_EVENT_EJECT_REQUEST = 1 << 1, /* eject requested */
+};
+
+enum {
+ /* Poll even if events_poll_msecs is unset */
+ DISK_EVENT_FLAG_POLL = 1 << 0,
+ /* Forward events to udev */
+ DISK_EVENT_FLAG_UEVENT = 1 << 1,
+ /* Block event polling when open for exclusive write */
+ DISK_EVENT_FLAG_BLOCK_ON_EXCL_WRITE = 1 << 2,
+};
+
+struct disk_events;
+struct badblocks;
+
+struct blk_integrity {
+ const struct blk_integrity_profile *profile;
+ unsigned char flags;
+ unsigned char tuple_size;
+ unsigned char interval_exp;
+ unsigned char tag_size;
+};
+
+struct gendisk {
+ /*
+ * major/first_minor/minors should not be set by any new driver, the
+ * block core will take care of allocating them automatically.
+ */
+ int major;
+ int first_minor;
+ int minors;
+
+ char disk_name[DISK_NAME_LEN]; /* name of major driver */
+
+ unsigned short events; /* supported events */
+ unsigned short event_flags; /* flags related to event processing */
+
+ struct xarray part_tbl;
+ struct block_device *part0;
+
+ const struct block_device_operations *fops;
+ struct request_queue *queue;
+ void *private_data;
+
+ int flags;
+ unsigned long state;
+#define GD_NEED_PART_SCAN 0
+#define GD_READ_ONLY 1
+#define GD_DEAD 2
+#define GD_NATIVE_CAPACITY 3
+#define GD_ADDED 4
+#define GD_SUPPRESS_PART_SCAN 5
+
+ struct mutex open_mutex; /* open/close mutex */
+ unsigned open_partitions; /* number of open partitions */
+
+ struct backing_dev_info *bdi;
+ struct kobject *slave_dir;
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+ struct list_head slave_bdevs;
+#endif
+ struct timer_rand_state *random;
+ atomic_t sync_io; /* RAID */
+ struct disk_events *ev;
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ struct kobject integrity_kobj;
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+#if IS_ENABLED(CONFIG_CDROM)
+ struct cdrom_device_info *cdi;
+#endif
+ int node_id;
+ struct badblocks *bb;
+ struct lockdep_map lockdep_map;
+ u64 diskseq;
+};
+
+static inline bool disk_live(struct gendisk *disk)
+{
+ return !inode_unhashed(disk->part0->bd_inode);
+}
+
+/**
+ * disk_openers - returns how many openers are there for a disk
+ * @disk: disk to check
+ *
+ * This returns the number of openers for a disk. Note that this value is only
+ * stable if disk->open_mutex is held.
+ *
+ * Note: Due to a quirk in the block layer open code, each open partition is
+ * only counted once even if there are multiple openers.
+ */
+static inline unsigned int disk_openers(struct gendisk *disk)
+{
+ return atomic_read(&disk->part0->bd_openers);
+}
+
+/*
+ * The gendisk is refcounted by the part0 block_device, and the bd_device
+ * therein is also used for device model presentation in sysfs.
+ */
+#define dev_to_disk(device) \
+ (dev_to_bdev(device)->bd_disk)
+#define disk_to_dev(disk) \
+ (&((disk)->part0->bd_device))
+
+#if IS_REACHABLE(CONFIG_CDROM)
+#define disk_to_cdi(disk) ((disk)->cdi)
+#else
+#define disk_to_cdi(disk) NULL
+#endif
+
+static inline dev_t disk_devt(struct gendisk *disk)
+{
+ return MKDEV(disk->major, disk->first_minor);
+}
+
+static inline int blk_validate_block_size(unsigned long bsize)
{
if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
return -EINVAL;
@@ -96,7 +264,7 @@ struct queue_limits {
unsigned int io_opt;
unsigned int max_discard_sectors;
unsigned int max_hw_discard_sectors;
- unsigned int max_write_same_sectors;
+ unsigned int max_secure_erase_sectors;
unsigned int max_write_zeroes_sectors;
unsigned int max_zone_append_sectors;
unsigned int discard_granularity;
@@ -203,7 +371,7 @@ struct request_queue {
unsigned int queue_depth;
/* hw dispatch queues */
- struct blk_mq_hw_ctx **queue_hw_ctx;
+ struct xarray hctx_table;
unsigned int nr_hw_queues;
/*
@@ -261,13 +429,14 @@ struct request_queue {
#ifdef CONFIG_BLK_INLINE_ENCRYPTION
struct blk_crypto_profile *crypto_profile;
+ struct kobject *crypto_kobject;
#endif
unsigned int rq_timeout;
int poll_nsec;
struct blk_stat_callback *poll_cb;
- struct blk_rq_stat poll_stat[BLK_MQ_POLL_STATS_BKTS];
+ struct blk_rq_stat *poll_stat;
struct timer_list timeout;
struct work_struct timeout_work;
@@ -365,29 +534,31 @@ struct request_queue {
bool mq_sysfs_init_done;
-#define BLK_MAX_WRITE_HINTS 5
- u64 write_hints[BLK_MAX_WRITE_HINTS];
-
/*
* Independent sector access ranges. This is always NULL for
* devices that do not have multiple independent access ranges.
*/
struct blk_independent_access_ranges *ia_ranges;
+
+ /**
+ * @srcu: Sleepable RCU. Use as lock when type of the request queue
+ * is blocking (BLK_MQ_F_BLOCKING). Must be the last member
+ */
+ struct srcu_struct srcu[];
};
/* Keep blk_queue_flag_name[] in sync with the definitions below */
#define QUEUE_FLAG_STOPPED 0 /* queue is stopped */
#define QUEUE_FLAG_DYING 1 /* queue being torn down */
+#define QUEUE_FLAG_HAS_SRCU 2 /* SRCU is allocated */
#define QUEUE_FLAG_NOMERGES 3 /* disable merge attempts */
#define QUEUE_FLAG_SAME_COMP 4 /* complete on same CPU-group */
#define QUEUE_FLAG_FAIL_IO 5 /* fake timeout */
#define QUEUE_FLAG_NONROT 6 /* non-rotational device (SSD) */
#define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */
#define QUEUE_FLAG_IO_STAT 7 /* do disk/partitions IO accounting */
-#define QUEUE_FLAG_DISCARD 8 /* supports DISCARD */
#define QUEUE_FLAG_NOXMERGES 9 /* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */
-#define QUEUE_FLAG_SECERASE 11 /* supports secure erase */
#define QUEUE_FLAG_SAME_FORCE 12 /* force complete on same CPU */
#define QUEUE_FLAG_DEAD 13 /* queue tear-down finished */
#define QUEUE_FLAG_INIT_DONE 14 /* queue is initialized */
@@ -397,7 +568,6 @@ struct request_queue {
#define QUEUE_FLAG_FUA 18 /* device supports FUA writes */
#define QUEUE_FLAG_DAX 19 /* device supports DAX */
#define QUEUE_FLAG_STATS 20 /* track IO start and completion times */
-#define QUEUE_FLAG_POLL_STATS 21 /* collecting stats for hybrid polling */
#define QUEUE_FLAG_REGISTERED 22 /* queue has been registered to a disk */
#define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */
#define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */
@@ -405,6 +575,7 @@ struct request_queue {
#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */
#define QUEUE_FLAG_HCTX_ACTIVE 28 /* at least one blk-mq hctx is active */
#define QUEUE_FLAG_NOWAIT 29 /* device supports NOWAIT */
+#define QUEUE_FLAG_SQ_SCHED 30 /* single queue style io dispatch */
#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_SAME_COMP) | \
@@ -416,6 +587,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
#define blk_queue_dying(q) test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags)
+#define blk_queue_has_srcu(q) test_bit(QUEUE_FLAG_HAS_SRCU, &(q)->queue_flags)
#define blk_queue_dead(q) test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags)
#define blk_queue_init_done(q) test_bit(QUEUE_FLAG_INIT_DONE, &(q)->queue_flags)
#define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
@@ -426,11 +598,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags)
#define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
#define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
-#define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
#define blk_queue_zone_resetall(q) \
test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags)
-#define blk_queue_secure_erase(q) \
- (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
#define blk_queue_pci_p2pdma(q) \
test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags)
@@ -446,9 +615,9 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
REQ_FAILFAST_DRIVER))
#define blk_queue_quiesced(q) test_bit(QUEUE_FLAG_QUIESCED, &(q)->queue_flags)
#define blk_queue_pm_only(q) atomic_read(&(q)->pm_only)
-#define blk_queue_fua(q) test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags)
#define blk_queue_registered(q) test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags)
#define blk_queue_nowait(q) test_bit(QUEUE_FLAG_NOWAIT, &(q)->queue_flags)
+#define blk_queue_sq_sched(q) test_bit(QUEUE_FLAG_SQ_SCHED, &(q)->queue_flags)
extern void blk_set_pm_only(struct request_queue *q);
extern void blk_clear_pm_only(struct request_queue *q);
@@ -588,6 +757,118 @@ static inline unsigned int blk_queue_depth(struct request_queue *q)
#define for_each_bio(_bio) \
for (; _bio; _bio = _bio->bi_next)
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
+ const struct attribute_group **groups);
+static inline int __must_check add_disk(struct gendisk *disk)
+{
+ return device_add_disk(NULL, disk, NULL);
+}
+void del_gendisk(struct gendisk *gp);
+void invalidate_disk(struct gendisk *disk);
+void set_disk_ro(struct gendisk *disk, bool read_only);
+void disk_uevent(struct gendisk *disk, enum kobject_action action);
+
+static inline int get_disk_ro(struct gendisk *disk)
+{
+ return disk->part0->bd_read_only ||
+ test_bit(GD_READ_ONLY, &disk->state);
+}
+
+static inline int bdev_read_only(struct block_device *bdev)
+{
+ return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
+}
+
+bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
+bool disk_force_media_change(struct gendisk *disk, unsigned int events);
+
+void add_disk_randomness(struct gendisk *disk) __latent_entropy;
+void rand_initialize_disk(struct gendisk *disk);
+
+static inline sector_t get_start_sect(struct block_device *bdev)
+{
+ return bdev->bd_start_sect;
+}
+
+static inline sector_t bdev_nr_sectors(struct block_device *bdev)
+{
+ return bdev->bd_nr_sectors;
+}
+
+static inline loff_t bdev_nr_bytes(struct block_device *bdev)
+{
+ return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;
+}
+
+static inline sector_t get_capacity(struct gendisk *disk)
+{
+ return bdev_nr_sectors(disk->part0);
+}
+
+static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
+{
+ return bdev_nr_sectors(sb->s_bdev) >>
+ (sb->s_blocksize_bits - SECTOR_SHIFT);
+}
+
+int bdev_disk_changed(struct gendisk *disk, bool invalidate);
+
+struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
+ struct lock_class_key *lkclass);
+void put_disk(struct gendisk *disk);
+struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
+
+/**
+ * blk_alloc_disk - allocate a gendisk structure
+ * @node_id: numa node to allocate on
+ *
+ * Allocate and pre-initialize a gendisk structure for use with BIO based
+ * drivers.
+ *
+ * Context: can sleep
+ */
+#define blk_alloc_disk(node_id) \
+({ \
+ static struct lock_class_key __key; \
+ \
+ __blk_alloc_disk(node_id, &__key); \
+})
+void blk_cleanup_disk(struct gendisk *disk);
+
+int __register_blkdev(unsigned int major, const char *name,
+ void (*probe)(dev_t devt));
+#define register_blkdev(major, name) \
+ __register_blkdev(major, name, NULL)
+void unregister_blkdev(unsigned int major, const char *name);
+
+bool bdev_check_media_change(struct block_device *bdev);
+int __invalidate_device(struct block_device *bdev, bool kill_dirty);
+void set_capacity(struct gendisk *disk, sector_t size);
+
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
+void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
+int bd_register_pending_holders(struct gendisk *disk);
+#else
+static inline int bd_link_disk_holder(struct block_device *bdev,
+ struct gendisk *disk)
+{
+ return 0;
+}
+static inline void bd_unlink_disk_holder(struct block_device *bdev,
+ struct gendisk *disk)
+{
+}
+static inline int bd_register_pending_holders(struct gendisk *disk)
+{
+ return 0;
+}
+#endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
+
+dev_t part_devt(struct gendisk *disk, u8 partno);
+void inc_diskseq(struct gendisk *disk);
+dev_t blk_lookup_devt(const char *name, int partno);
+void blk_request_module(dev_t devt);
extern int blk_register_queue(struct gendisk *disk);
extern void blk_unregister_queue(struct gendisk *disk);
@@ -643,9 +924,6 @@ static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
return min(q->limits.max_discard_sectors,
UINT_MAX >> SECTOR_SHIFT);
- if (unlikely(op == REQ_OP_WRITE_SAME))
- return q->limits.max_write_same_sectors;
-
if (unlikely(op == REQ_OP_WRITE_ZEROES))
return q->limits.max_write_zeroes_sectors;
@@ -685,11 +963,11 @@ extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_discard_segments(struct request_queue *,
unsigned short);
+void blk_queue_max_secure_erase_sectors(struct request_queue *q,
+ unsigned int max_sectors);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
-extern void blk_queue_max_write_same_sectors(struct request_queue *q,
- unsigned int max_write_same_sectors);
extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
unsigned int max_write_same_sectors);
extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
@@ -730,8 +1008,6 @@ void disk_set_independent_access_ranges(struct gendisk *disk,
*/
/* Supports zoned block devices sequential write constraint */
#define ELEVATOR_F_ZBD_SEQ_WRITE (1U << 0)
-/* Supports scheduling on multiple hardware queues */
-#define ELEVATOR_F_MQ_AWARE (1U << 1)
extern void blk_queue_required_elevator_features(struct request_queue *q,
unsigned int features);
@@ -740,7 +1016,8 @@ extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
bool __must_check blk_get_queue(struct request_queue *);
extern void blk_put_queue(struct request_queue *);
-extern void blk_set_queue_dying(struct request_queue *);
+
+void blk_mark_disk_dead(struct gendisk *disk);
#ifdef CONFIG_BLOCK
/*
@@ -783,14 +1060,11 @@ extern void blk_start_plug(struct blk_plug *);
extern void blk_start_plug_nr_ios(struct blk_plug *, unsigned short);
extern void blk_finish_plug(struct blk_plug *);
-void blk_flush_plug(struct blk_plug *plug, bool from_schedule);
-
-static inline bool blk_needs_flush_plug(struct task_struct *tsk)
+void __blk_flush_plug(struct blk_plug *plug, bool from_schedule);
+static inline void blk_flush_plug(struct blk_plug *plug, bool async)
{
- struct blk_plug *plug = tsk->plug;
-
- return plug &&
- (plug->mq_list || !list_empty(&plug->cb_list));
+ if (plug)
+ __blk_flush_plug(plug, async);
}
int blkdev_issue_flush(struct block_device *bdev);
@@ -816,11 +1090,6 @@ static inline void blk_flush_plug(struct blk_plug *plug, bool async)
{
}
-static inline bool blk_needs_flush_plug(struct task_struct *tsk)
-{
- return false;
-}
-
static inline int blkdev_issue_flush(struct block_device *bdev)
{
return 0;
@@ -834,16 +1103,12 @@ static inline long nr_blockdev_pages(void)
extern void blk_io_schedule(void);
-extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, struct page *page);
-
-#define BLKDEV_DISCARD_SECURE (1 << 0) /* issue a secure erase */
-
-extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, unsigned long flags);
-extern int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, int flags,
- struct bio **biop);
+int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp_mask);
+int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp_mask, struct bio **biop);
+int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp);
#define BLKDEV_ZERO_NOUNMAP (1 << 0) /* do not free blocks */
#define BLKDEV_ZERO_NOFALLBACK (1 << 1) /* don't write explicit zeroes */
@@ -862,7 +1127,7 @@ static inline int sb_issue_discard(struct super_block *sb, sector_t block,
SECTOR_SHIFT),
nr_blocks << (sb->s_blocksize_bits -
SECTOR_SHIFT),
- gfp_mask, flags);
+ gfp_mask);
}
static inline int sb_issue_zeroout(struct super_block *sb, sector_t block,
sector_t nr_blocks, gfp_t gfp_mask)
@@ -936,6 +1201,12 @@ static inline unsigned int queue_max_zone_append_sectors(const struct request_qu
return min(l->max_zone_append_sectors, l->max_sectors);
}
+static inline unsigned int
+bdev_max_zone_append_sectors(struct block_device *bdev)
+{
+ return queue_max_zone_append_sectors(bdev_get_queue(bdev));
+}
+
static inline unsigned queue_logical_block_size(const struct request_queue *q)
{
int retval = 512;
@@ -993,94 +1264,54 @@ bdev_zone_write_granularity(struct block_device *bdev)
return queue_zone_write_granularity(bdev_get_queue(bdev));
}
-static inline int queue_alignment_offset(const struct request_queue *q)
-{
- if (q->limits.misaligned)
- return -1;
-
- return q->limits.alignment_offset;
-}
+int bdev_alignment_offset(struct block_device *bdev);
+unsigned int bdev_discard_alignment(struct block_device *bdev);
-static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
+static inline unsigned int bdev_max_discard_sectors(struct block_device *bdev)
{
- unsigned int granularity = max(lim->physical_block_size, lim->io_min);
- unsigned int alignment = sector_div(sector, granularity >> SECTOR_SHIFT)
- << SECTOR_SHIFT;
-
- return (granularity + lim->alignment_offset - alignment) % granularity;
+ return bdev_get_queue(bdev)->limits.max_discard_sectors;
}
-static inline int bdev_alignment_offset(struct block_device *bdev)
+static inline unsigned int bdev_discard_granularity(struct block_device *bdev)
{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (q->limits.misaligned)
- return -1;
- if (bdev_is_partition(bdev))
- return queue_limit_alignment_offset(&q->limits,
- bdev->bd_start_sect);
- return q->limits.alignment_offset;
+ return bdev_get_queue(bdev)->limits.discard_granularity;
}
-static inline int queue_discard_alignment(const struct request_queue *q)
+static inline unsigned int
+bdev_max_secure_erase_sectors(struct block_device *bdev)
{
- if (q->limits.discard_misaligned)
- return -1;
-
- return q->limits.discard_alignment;
+ return bdev_get_queue(bdev)->limits.max_secure_erase_sectors;
}
-static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
+static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
{
- unsigned int alignment, granularity, offset;
-
- if (!lim->max_discard_sectors)
- return 0;
-
- /* Why are these in bytes, not sectors? */
- alignment = lim->discard_alignment >> SECTOR_SHIFT;
- granularity = lim->discard_granularity >> SECTOR_SHIFT;
- if (!granularity)
- return 0;
-
- /* Offset of the partition start in 'granularity' sectors */
- offset = sector_div(sector, granularity);
+ struct request_queue *q = bdev_get_queue(bdev);
- /* And why do we do this modulus *again* in blkdev_issue_discard()? */
- offset = (granularity + alignment - offset) % granularity;
+ if (q)
+ return q->limits.max_write_zeroes_sectors;
- /* Turn it back into bytes, gaah */
- return offset << SECTOR_SHIFT;
+ return 0;
}
-static inline int bdev_discard_alignment(struct block_device *bdev)
+static inline bool bdev_nonrot(struct block_device *bdev)
{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (bdev_is_partition(bdev))
- return queue_limit_discard_alignment(&q->limits,
- bdev->bd_start_sect);
- return q->limits.discard_alignment;
+ return blk_queue_nonrot(bdev_get_queue(bdev));
}
-static inline unsigned int bdev_write_same(struct block_device *bdev)
+static inline bool bdev_stable_writes(struct block_device *bdev)
{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (q)
- return q->limits.max_write_same_sectors;
-
- return 0;
+ return test_bit(QUEUE_FLAG_STABLE_WRITES,
+ &bdev_get_queue(bdev)->queue_flags);
}
-static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
+static inline bool bdev_write_cache(struct block_device *bdev)
{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (q)
- return q->limits.max_write_zeroes_sectors;
+ return test_bit(QUEUE_FLAG_WC, &bdev_get_queue(bdev)->queue_flags);
+}
- return 0;
+static inline bool bdev_fua(struct block_device *bdev)
+{
+ return test_bit(QUEUE_FLAG_FUA, &bdev_get_queue(bdev)->queue_flags);
}
static inline enum blk_zoned_model bdev_zoned_model(struct block_device *bdev)
@@ -1171,8 +1402,6 @@ int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned lo
bool blk_crypto_register(struct blk_crypto_profile *profile,
struct request_queue *q);
-void blk_crypto_unregister(struct request_queue *q);
-
#else /* CONFIG_BLK_INLINE_ENCRYPTION */
static inline bool blk_crypto_register(struct blk_crypto_profile *profile,
@@ -1181,8 +1410,6 @@ static inline bool blk_crypto_register(struct blk_crypto_profile *profile,
return true;
}
-static inline void blk_crypto_unregister(struct request_queue *q) { }
-
#endif /* CONFIG_BLK_INLINE_ENCRYPTION */
enum blk_unique_id {
@@ -1196,6 +1423,8 @@ enum blk_unique_id {
struct block_device_operations {
void (*submit_bio)(struct bio *bio);
+ int (*poll_bio)(struct bio *bio, struct io_comp_batch *iob,
+ unsigned int flags);
int (*open) (struct block_device *, fmode_t);
void (*release) (struct gendisk *, fmode_t);
int (*rw_page)(struct block_device *, sector_t, struct page *, unsigned int);
@@ -1206,6 +1435,7 @@ struct block_device_operations {
void (*unlock_native_capacity) (struct gendisk *);
int (*getgeo)(struct block_device *, struct hd_geometry *);
int (*set_read_only)(struct block_device *bdev, bool ro);
+ void (*free_disk)(struct gendisk *disk);
/* this callback is with swap_lock and sometimes page table lock held */
void (*swap_slot_free_notify) (struct block_device *, unsigned long);
int (*report_zones)(struct gendisk *, sector_t sector,
@@ -1249,11 +1479,13 @@ static inline void blk_wake_io_task(struct task_struct *waiter)
wake_up_process(waiter);
}
-unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors,
- unsigned int op);
-void disk_end_io_acct(struct gendisk *disk, unsigned int op,
+unsigned long bdev_start_io_acct(struct block_device *bdev,
+ unsigned int sectors, unsigned int op,
+ unsigned long start_time);
+void bdev_end_io_acct(struct block_device *bdev, unsigned int op,
unsigned long start_time);
+void bio_start_io_acct_time(struct bio *bio, unsigned long start_time);
unsigned long bio_start_io_acct(struct bio *bio);
void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
struct block_device *orig_bdev);
@@ -1261,7 +1493,7 @@ void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
/**
* bio_end_io_acct - end I/O accounting for bio based drivers
* @bio: bio to end account for
- * @start: start time returned by bio_start_io_acct()
+ * @start_time: start time returned by bio_start_io_acct()
*/
static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time)
{
@@ -1304,8 +1536,10 @@ int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart,
#ifdef CONFIG_BLOCK
void invalidate_bdev(struct block_device *bdev);
int sync_blockdev(struct block_device *bdev);
+int sync_blockdev_range(struct block_device *bdev, loff_t lstart, loff_t lend);
int sync_blockdev_nowait(struct block_device *bdev);
void sync_bdevs(bool wait);
+void printk_all_partitions(void);
#else
static inline void invalidate_bdev(struct block_device *bdev)
{
@@ -1321,7 +1555,11 @@ static inline int sync_blockdev_nowait(struct block_device *bdev)
static inline void sync_bdevs(bool wait)
{
}
-#endif
+static inline void printk_all_partitions(void)
+{
+}
+#endif /* CONFIG_BLOCK */
+
int fsync_bdev(struct block_device *bdev);
int freeze_bdev(struct block_device *bdev);
@@ -1335,33 +1573,4 @@ struct io_comp_batch {
#define DEFINE_IO_COMP_BATCH(name) struct io_comp_batch name = { }
-#define rq_list_add(listptr, rq) do { \
- (rq)->rq_next = *(listptr); \
- *(listptr) = rq; \
-} while (0)
-
-#define rq_list_pop(listptr) \
-({ \
- struct request *__req = NULL; \
- if ((listptr) && *(listptr)) { \
- __req = *(listptr); \
- *(listptr) = __req->rq_next; \
- } \
- __req; \
-})
-
-#define rq_list_peek(listptr) \
-({ \
- struct request *__req = NULL; \
- if ((listptr) && *(listptr)) \
- __req = *(listptr); \
- __req; \
-})
-
-#define rq_list_for_each(listptr, pos) \
- for (pos = rq_list_peek((listptr)); pos; pos = rq_list_next(pos)) \
-
-#define rq_list_next(rq) (rq)->rq_next
-#define rq_list_empty(list) ((list) == (struct request *) NULL)
-
#endif /* _LINUX_BLKDEV_H */
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 22501a293fa5..623e22492afa 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -27,12 +27,10 @@ struct blk_trace {
atomic_t dropped;
};
-struct blkcg;
-
extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
extern void blk_trace_shutdown(struct request_queue *);
-extern __printf(3, 4)
-void __trace_note_message(struct blk_trace *, struct blkcg *blkcg, const char *fmt, ...);
+__printf(3, 4) void __blk_trace_note_message(struct blk_trace *bt,
+ struct cgroup_subsys_state *css, const char *fmt, ...);
/**
* blk_add_trace_msg - Add a (simple) message to the blktrace stream
@@ -47,14 +45,14 @@ void __trace_note_message(struct blk_trace *, struct blkcg *blkcg, const char *f
* NOTE: Can not use 'static inline' due to presence of var args...
*
**/
-#define blk_add_cgroup_trace_msg(q, cg, fmt, ...) \
+#define blk_add_cgroup_trace_msg(q, css, fmt, ...) \
do { \
struct blk_trace *bt; \
\
rcu_read_lock(); \
bt = rcu_dereference((q)->blk_trace); \
if (unlikely(bt)) \
- __trace_note_message(bt, cg, fmt, ##__VA_ARGS__);\
+ __blk_trace_note_message(bt, css, fmt, ##__VA_ARGS__);\
rcu_read_unlock(); \
} while (0)
#define blk_add_trace_msg(q, fmt, ...) \
diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index a4665c7ab07c..1611f9db878e 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -289,4 +289,14 @@ int __init xbc_get_info(int *node_size, size_t *data_size);
/* XBC cleanup data structures */
void __init xbc_exit(void);
+/* XBC embedded bootconfig data in kernel */
+#ifdef CONFIG_BOOT_CONFIG_EMBED
+const char * __init xbc_get_embedded_bootconfig(size_t *size);
+#else
+static inline const char *xbc_get_embedded_bootconfig(size_t *size)
+{
+ return NULL;
+}
+#endif
+
#endif
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index b525d8cdc25b..669d96d074ad 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -8,6 +8,7 @@
#include <linux/jump_label.h>
#include <linux/percpu.h>
#include <linux/rbtree.h>
+#include <net/sock.h>
#include <uapi/linux/bpf.h>
struct sock;
@@ -165,11 +166,23 @@ int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
void *value, u64 flags);
+/* Opportunistic check to see whether we have any BPF program attached*/
+static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
+ enum cgroup_bpf_attach_type type)
+{
+ struct cgroup *cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
+ struct bpf_prog_array *array;
+
+ array = rcu_access_pointer(cgrp->bpf.effective[type]);
+ return array != &bpf_empty_prog_array.hdr;
+}
+
/* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
#define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
({ \
int __ret = 0; \
- if (cgroup_bpf_enabled(CGROUP_INET_INGRESS)) \
+ if (cgroup_bpf_enabled(CGROUP_INET_INGRESS) && \
+ cgroup_bpf_sock_enabled(sk, CGROUP_INET_INGRESS)) \
__ret = __cgroup_bpf_run_filter_skb(sk, skb, \
CGROUP_INET_INGRESS); \
\
@@ -181,7 +194,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
int __ret = 0; \
if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
typeof(sk) __sk = sk_to_full_sk(sk); \
- if (sk_fullsock(__sk)) \
+ if (sk_fullsock(__sk) && \
+ cgroup_bpf_sock_enabled(__sk, CGROUP_INET_EGRESS)) \
__ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
CGROUP_INET_EGRESS); \
} \
@@ -211,24 +225,20 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
#define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype) \
({ \
- u32 __unused_flags; \
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) \
__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype, \
- NULL, \
- &__unused_flags); \
+ NULL, NULL); \
__ret; \
})
#define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) \
({ \
- u32 __unused_flags; \
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) { \
lock_sock(sk); \
__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype, \
- t_ctx, \
- &__unused_flags); \
+ t_ctx, NULL); \
release_sock(sk); \
} \
__ret; \
@@ -347,7 +357,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
kernel_optval) \
({ \
int __ret = 0; \
- if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT)) \
+ if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT) && \
+ cgroup_bpf_sock_enabled(sock, CGROUP_SETSOCKOPT)) \
__ret = __cgroup_bpf_run_filter_setsockopt(sock, level, \
optname, optval, \
optlen, \
@@ -367,7 +378,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
max_optlen, retval) \
({ \
int __ret = retval; \
- if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \
+ if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) && \
+ cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT)) \
if (!(sock)->sk_prot->bpf_bypass_getsockopt || \
!INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
tcp_bpf_bypass_getsockopt, \
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 6e947cd91152..2b914a56a2c5 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -23,6 +23,7 @@
#include <linux/slab.h>
#include <linux/percpu-refcount.h>
#include <linux/bpfptr.h>
+#include <linux/btf.h>
struct bpf_verifier_env;
struct bpf_verifier_log;
@@ -88,6 +89,7 @@ struct bpf_map_ops {
int (*map_push_elem)(struct bpf_map *map, void *value, u64 flags);
int (*map_pop_elem)(struct bpf_map *map, void *value);
int (*map_peek_elem)(struct bpf_map *map, void *value);
+ void *(*map_lookup_percpu_elem)(struct bpf_map *map, void *key, u32 cpu);
/* funcs called by prog_array and perf_event_array map */
void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file,
@@ -147,14 +149,48 @@ struct bpf_map_ops {
bpf_callback_t callback_fn,
void *callback_ctx, u64 flags);
- /* BTF name and id of struct allocated by map_alloc */
- const char * const map_btf_name;
+ /* BTF id of struct allocated by map_alloc */
int *map_btf_id;
/* bpf_iter info used to open a seq_file */
const struct bpf_iter_seq_info *iter_seq_info;
};
+enum {
+ /* Support at most 8 pointers in a BPF map value */
+ BPF_MAP_VALUE_OFF_MAX = 8,
+ BPF_MAP_OFF_ARR_MAX = BPF_MAP_VALUE_OFF_MAX +
+ 1 + /* for bpf_spin_lock */
+ 1, /* for bpf_timer */
+};
+
+enum bpf_kptr_type {
+ BPF_KPTR_UNREF,
+ BPF_KPTR_REF,
+};
+
+struct bpf_map_value_off_desc {
+ u32 offset;
+ enum bpf_kptr_type type;
+ struct {
+ struct btf *btf;
+ struct module *module;
+ btf_dtor_kfunc_t dtor;
+ u32 btf_id;
+ } kptr;
+};
+
+struct bpf_map_value_off {
+ u32 nr_off;
+ struct bpf_map_value_off_desc off[];
+};
+
+struct bpf_map_off_arr {
+ u32 cnt;
+ u32 field_off[BPF_MAP_OFF_ARR_MAX];
+ u8 field_sz[BPF_MAP_OFF_ARR_MAX];
+};
+
struct bpf_map {
/* The first two cachelines with read-mostly members of which some
* are also accessed in fast-path (e.g. ops, max_entries).
@@ -171,6 +207,7 @@ struct bpf_map {
u64 map_extra; /* any per-map-type extra fields */
u32 map_flags;
int spin_lock_off; /* >=0 valid offset, <0 error */
+ struct bpf_map_value_off *kptr_off_tab;
int timer_off; /* >=0 valid offset, <0 error */
u32 id;
int numa_node;
@@ -182,10 +219,7 @@ struct bpf_map {
struct mem_cgroup *memcg;
#endif
char name[BPF_OBJ_NAME_LEN];
- bool bypass_spec_v1;
- bool frozen; /* write-once; write-protected by freeze_mutex */
- /* 14 bytes hole */
-
+ struct bpf_map_off_arr *off_arr;
/* The 3rd and 4th cacheline with misc members to avoid false sharing
* particularly with refcounting.
*/
@@ -194,6 +228,19 @@ struct bpf_map {
struct work_struct work;
struct mutex freeze_mutex;
atomic64_t writecnt;
+ /* 'Ownership' of program-containing map is claimed by the first program
+ * that is going to use this map or by the first program which FD is
+ * stored in the map to make sure that all callers and callees have the
+ * same prog type, JITed flag and xdp_has_frags flag.
+ */
+ struct {
+ spinlock_t lock;
+ enum bpf_prog_type type;
+ bool jited;
+ bool xdp_has_frags;
+ } owner;
+ bool bypass_spec_v1;
+ bool frozen; /* write-once; write-protected by freeze_mutex */
};
static inline bool map_value_has_spin_lock(const struct bpf_map *map)
@@ -206,44 +253,44 @@ static inline bool map_value_has_timer(const struct bpf_map *map)
return map->timer_off >= 0;
}
+static inline bool map_value_has_kptrs(const struct bpf_map *map)
+{
+ return !IS_ERR_OR_NULL(map->kptr_off_tab);
+}
+
static inline void check_and_init_map_value(struct bpf_map *map, void *dst)
{
if (unlikely(map_value_has_spin_lock(map)))
- *(struct bpf_spin_lock *)(dst + map->spin_lock_off) =
- (struct bpf_spin_lock){};
+ memset(dst + map->spin_lock_off, 0, sizeof(struct bpf_spin_lock));
if (unlikely(map_value_has_timer(map)))
- *(struct bpf_timer *)(dst + map->timer_off) =
- (struct bpf_timer){};
+ memset(dst + map->timer_off, 0, sizeof(struct bpf_timer));
+ if (unlikely(map_value_has_kptrs(map))) {
+ struct bpf_map_value_off *tab = map->kptr_off_tab;
+ int i;
+
+ for (i = 0; i < tab->nr_off; i++)
+ *(u64 *)(dst + tab->off[i].offset) = 0;
+ }
}
/* copy everything but bpf_spin_lock and bpf_timer. There could be one of each. */
static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
{
- u32 s_off = 0, s_sz = 0, t_off = 0, t_sz = 0;
+ u32 curr_off = 0;
+ int i;
- if (unlikely(map_value_has_spin_lock(map))) {
- s_off = map->spin_lock_off;
- s_sz = sizeof(struct bpf_spin_lock);
- } else if (unlikely(map_value_has_timer(map))) {
- t_off = map->timer_off;
- t_sz = sizeof(struct bpf_timer);
+ if (likely(!map->off_arr)) {
+ memcpy(dst, src, map->value_size);
+ return;
}
- if (unlikely(s_sz || t_sz)) {
- if (s_off < t_off || !s_sz) {
- swap(s_off, t_off);
- swap(s_sz, t_sz);
- }
- memcpy(dst, src, t_off);
- memcpy(dst + t_off + t_sz,
- src + t_off + t_sz,
- s_off - t_off - t_sz);
- memcpy(dst + s_off + s_sz,
- src + s_off + s_sz,
- map->value_size - s_off - s_sz);
- } else {
- memcpy(dst, src, map->value_size);
+ for (i = 0; i < map->off_arr->cnt; i++) {
+ u32 next_off = map->off_arr->field_off[i];
+
+ memcpy(dst + curr_off, src + curr_off, next_off - curr_off);
+ curr_off += map->off_arr->field_sz[i];
}
+ memcpy(dst + curr_off, src + curr_off, map->value_size - curr_off);
}
void copy_map_value_locked(struct bpf_map *map, void *dst, void *src,
bool lock_src);
@@ -316,9 +363,47 @@ enum bpf_type_flag {
*/
MEM_RDONLY = BIT(1 + BPF_BASE_TYPE_BITS),
- __BPF_TYPE_LAST_FLAG = MEM_RDONLY,
+ /* MEM was "allocated" from a different helper, and cannot be mixed
+ * with regular non-MEM_ALLOC'ed MEM types.
+ */
+ MEM_ALLOC = BIT(2 + BPF_BASE_TYPE_BITS),
+
+ /* MEM is in user address space. */
+ MEM_USER = BIT(3 + BPF_BASE_TYPE_BITS),
+
+ /* MEM is a percpu memory. MEM_PERCPU tags PTR_TO_BTF_ID. When tagged
+ * with MEM_PERCPU, PTR_TO_BTF_ID _cannot_ be directly accessed. In
+ * order to drop this tag, it must be passed into bpf_per_cpu_ptr()
+ * or bpf_this_cpu_ptr(), which will return the pointer corresponding
+ * to the specified cpu.
+ */
+ MEM_PERCPU = BIT(4 + BPF_BASE_TYPE_BITS),
+
+ /* Indicates that the argument will be released. */
+ OBJ_RELEASE = BIT(5 + BPF_BASE_TYPE_BITS),
+
+ /* PTR is not trusted. This is only used with PTR_TO_BTF_ID, to mark
+ * unreferenced and referenced kptr loaded from map value using a load
+ * instruction, so that they can only be dereferenced but not escape the
+ * BPF program into the kernel (i.e. cannot be passed as arguments to
+ * kfunc or bpf helpers).
+ */
+ PTR_UNTRUSTED = BIT(6 + BPF_BASE_TYPE_BITS),
+
+ MEM_UNINIT = BIT(7 + BPF_BASE_TYPE_BITS),
+
+ /* DYNPTR points to memory local to the bpf program. */
+ DYNPTR_TYPE_LOCAL = BIT(8 + BPF_BASE_TYPE_BITS),
+
+ /* DYNPTR points to a ringbuf record. */
+ DYNPTR_TYPE_RINGBUF = BIT(9 + BPF_BASE_TYPE_BITS),
+
+ __BPF_TYPE_FLAG_MAX,
+ __BPF_TYPE_LAST_FLAG = __BPF_TYPE_FLAG_MAX - 1,
};
+#define DYNPTR_TYPE_FLAG_MASK (DYNPTR_TYPE_LOCAL | DYNPTR_TYPE_RINGBUF)
+
/* Max number of base types. */
#define BPF_BASE_TYPE_LIMIT (1UL << BPF_BASE_TYPE_BITS)
@@ -335,16 +420,11 @@ enum bpf_arg_type {
ARG_CONST_MAP_PTR, /* const argument used as pointer to bpf_map */
ARG_PTR_TO_MAP_KEY, /* pointer to stack used as map key */
ARG_PTR_TO_MAP_VALUE, /* pointer to stack used as map value */
- ARG_PTR_TO_UNINIT_MAP_VALUE, /* pointer to valid memory used to store a map value */
- /* the following constraints used to prototype bpf_memcmp() and other
- * functions that access data on eBPF program stack
+ /* Used to prototype bpf_memcmp() and other functions that access data
+ * on eBPF program stack
*/
ARG_PTR_TO_MEM, /* pointer to valid memory (stack, packet, map value) */
- ARG_PTR_TO_UNINIT_MEM, /* pointer to memory does not need to be initialized,
- * helper function must fill all bytes or clear
- * them in error case.
- */
ARG_CONST_SIZE, /* number of bytes accessed from memory */
ARG_CONST_SIZE_OR_ZERO, /* number of bytes accessed from memory or 0 */
@@ -365,6 +445,8 @@ enum bpf_arg_type {
ARG_PTR_TO_STACK, /* pointer to stack */
ARG_PTR_TO_CONST_STR, /* pointer to a null terminated read-only string */
ARG_PTR_TO_TIMER, /* pointer to bpf_timer */
+ ARG_PTR_TO_KPTR, /* pointer to referenced kptr */
+ ARG_PTR_TO_DYNPTR, /* pointer to bpf_dynptr. See bpf_type_flag for dynptr type */
__BPF_ARG_TYPE_MAX,
/* Extended arg_types. */
@@ -374,6 +456,11 @@ enum bpf_arg_type {
ARG_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_SOCKET,
ARG_PTR_TO_ALLOC_MEM_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_ALLOC_MEM,
ARG_PTR_TO_STACK_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_STACK,
+ ARG_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_BTF_ID,
+ /* pointer to memory does not need to be initialized, helper function must fill
+ * all bytes or clear them in error case.
+ */
+ ARG_PTR_TO_UNINIT_MEM = MEM_UNINIT | ARG_PTR_TO_MEM,
/* This must be the last entry. Its purpose is to ensure the enum is
* wide enough to hold the higher bits reserved for bpf_type_flag.
@@ -400,7 +487,8 @@ enum bpf_return_type {
RET_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCKET,
RET_PTR_TO_TCP_SOCK_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK,
RET_PTR_TO_SOCK_COMMON_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON,
- RET_PTR_TO_ALLOC_MEM_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_ALLOC_MEM,
+ RET_PTR_TO_ALLOC_MEM_OR_NULL = PTR_MAYBE_NULL | MEM_ALLOC | RET_PTR_TO_ALLOC_MEM,
+ RET_PTR_TO_DYNPTR_MEM_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_ALLOC_MEM,
RET_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID,
/* This must be the last entry. Its purpose is to ensure the enum is
@@ -498,7 +586,6 @@ enum bpf_reg_type {
*/
PTR_TO_MEM, /* reg points to valid memory region */
PTR_TO_BUF, /* reg points to a read/write buffer */
- PTR_TO_PERCPU_BTF_ID, /* reg points to a percpu kernel variable */
PTR_TO_FUNC, /* reg points to a bpf program function */
__BPF_REG_TYPE_MAX,
@@ -572,8 +659,7 @@ struct bpf_verifier_ops {
const struct btf *btf,
const struct btf_type *t, int off, int size,
enum bpf_access_type atype,
- u32 *next_btf_id);
- bool (*check_kfunc_call)(u32 kfunc_btf_id, struct module *owner);
+ u32 *next_btf_id, enum bpf_type_flag *flag);
};
struct bpf_prog_offload_ops {
@@ -648,15 +734,17 @@ struct btf_func_model {
#define BPF_TRAMP_F_RET_FENTRY_RET BIT(4)
/* Each call __bpf_prog_enter + call bpf_func + call __bpf_prog_exit is ~50
- * bytes on x86. Pick a number to fit into BPF_IMAGE_SIZE / 2
+ * bytes on x86.
*/
-#define BPF_MAX_TRAMP_PROGS 38
+#define BPF_MAX_TRAMP_LINKS 38
-struct bpf_tramp_progs {
- struct bpf_prog *progs[BPF_MAX_TRAMP_PROGS];
- int nr_progs;
+struct bpf_tramp_links {
+ struct bpf_tramp_link *links[BPF_MAX_TRAMP_LINKS];
+ int nr_links;
};
+struct bpf_tramp_run_ctx;
+
/* Different use cases for BPF trampoline:
* 1. replace nop at the function entry (kprobe equivalent)
* flags = BPF_TRAMP_F_RESTORE_REGS
@@ -680,13 +768,14 @@ struct bpf_tramp_progs {
struct bpf_tramp_image;
int arch_prepare_bpf_trampoline(struct bpf_tramp_image *tr, void *image, void *image_end,
const struct btf_func_model *m, u32 flags,
- struct bpf_tramp_progs *tprogs,
+ struct bpf_tramp_links *tlinks,
void *orig_call);
/* these two functions are called from generated trampoline */
-u64 notrace __bpf_prog_enter(struct bpf_prog *prog);
-void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start);
-u64 notrace __bpf_prog_enter_sleepable(struct bpf_prog *prog);
-void notrace __bpf_prog_exit_sleepable(struct bpf_prog *prog, u64 start);
+u64 notrace __bpf_prog_enter(struct bpf_prog *prog, struct bpf_tramp_run_ctx *run_ctx);
+void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start, struct bpf_tramp_run_ctx *run_ctx);
+u64 notrace __bpf_prog_enter_sleepable(struct bpf_prog *prog, struct bpf_tramp_run_ctx *run_ctx);
+void notrace __bpf_prog_exit_sleepable(struct bpf_prog *prog, u64 start,
+ struct bpf_tramp_run_ctx *run_ctx);
void notrace __bpf_tramp_enter(struct bpf_tramp_image *tr);
void notrace __bpf_tramp_exit(struct bpf_tramp_image *tr);
@@ -779,9 +868,10 @@ static __always_inline __nocfi unsigned int bpf_dispatcher_nop_func(
{
return bpf_func(ctx, insnsi);
}
+
#ifdef CONFIG_BPF_JIT
-int bpf_trampoline_link_prog(struct bpf_prog *prog, struct bpf_trampoline *tr);
-int bpf_trampoline_unlink_prog(struct bpf_prog *prog, struct bpf_trampoline *tr);
+int bpf_trampoline_link_prog(struct bpf_tramp_link *link, struct bpf_trampoline *tr);
+int bpf_trampoline_unlink_prog(struct bpf_tramp_link *link, struct bpf_trampoline *tr);
struct bpf_trampoline *bpf_trampoline_get(u64 key,
struct bpf_attach_target_info *tgt_info);
void bpf_trampoline_put(struct bpf_trampoline *tr);
@@ -828,16 +918,16 @@ void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym);
void bpf_image_ksym_del(struct bpf_ksym *ksym);
void bpf_ksym_add(struct bpf_ksym *ksym);
void bpf_ksym_del(struct bpf_ksym *ksym);
-int bpf_jit_charge_modmem(u32 pages);
-void bpf_jit_uncharge_modmem(u32 pages);
+int bpf_jit_charge_modmem(u32 size);
+void bpf_jit_uncharge_modmem(u32 size);
bool bpf_prog_has_trampoline(const struct bpf_prog *prog);
#else
-static inline int bpf_trampoline_link_prog(struct bpf_prog *prog,
+static inline int bpf_trampoline_link_prog(struct bpf_tramp_link *link,
struct bpf_trampoline *tr)
{
return -ENOTSUPP;
}
-static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog,
+static inline int bpf_trampoline_unlink_prog(struct bpf_tramp_link *link,
struct bpf_trampoline *tr)
{
return -ENOTSUPP;
@@ -934,7 +1024,8 @@ struct bpf_prog_aux {
bool func_proto_unreliable;
bool sleepable;
bool tail_call_reachable;
- struct hlist_node tramp_hlist;
+ bool xdp_has_frags;
+ bool use_bpf_prog_pack;
/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
const struct btf_type *attach_func_proto;
/* function name for valid attach_btf_id */
@@ -994,16 +1085,6 @@ struct bpf_prog_aux {
};
struct bpf_array_aux {
- /* 'Ownership' of prog array is claimed by the first program that
- * is going to use this map or by the first program which FD is
- * stored in the map to make sure that all callers and callees have
- * the same prog type and JITed flag.
- */
- struct {
- spinlock_t lock;
- enum bpf_prog_type type;
- bool jited;
- } owner;
/* Programs with direct jumps into programs part of this array. */
struct list_head poke_progs;
struct bpf_map *map;
@@ -1031,6 +1112,19 @@ struct bpf_link_ops {
struct bpf_link_info *info);
};
+struct bpf_tramp_link {
+ struct bpf_link link;
+ struct hlist_node tramp_hlist;
+ u64 cookie;
+};
+
+struct bpf_tracing_link {
+ struct bpf_tramp_link link;
+ enum bpf_attach_type attach_type;
+ struct bpf_trampoline *trampoline;
+ struct bpf_prog *tgt_prog;
+};
+
struct bpf_link_primer {
struct bpf_link *link;
struct file *file;
@@ -1068,8 +1162,8 @@ bool bpf_struct_ops_get(const void *kdata);
void bpf_struct_ops_put(const void *kdata);
int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key,
void *value);
-int bpf_struct_ops_prepare_trampoline(struct bpf_tramp_progs *tprogs,
- struct bpf_prog *prog,
+int bpf_struct_ops_prepare_trampoline(struct bpf_tramp_links *tlinks,
+ struct bpf_tramp_link *link,
const struct btf_func_model *model,
void *image, void *image_end);
static inline bool bpf_try_module_get(const void *data, struct module *owner)
@@ -1178,7 +1272,14 @@ struct bpf_event_entry {
struct rcu_head rcu;
};
-bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
+static inline bool map_type_contains_progs(struct bpf_map *map)
+{
+ return map->map_type == BPF_MAP_TYPE_PROG_ARRAY ||
+ map->map_type == BPF_MAP_TYPE_DEVMAP ||
+ map->map_type == BPF_MAP_TYPE_CPUMAP;
+}
+
+bool bpf_prog_map_compatible(struct bpf_map *map, const struct bpf_prog *fp);
int bpf_prog_calc_tag(struct bpf_prog *fp);
const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
@@ -1198,7 +1299,7 @@ u64 bpf_event_output(struct bpf_map *map, u64 flags, void *meta, u64 meta_size,
/* an array of programs to be executed under rcu_lock.
*
* Typical usage:
- * ret = BPF_PROG_RUN_ARRAY(&bpf_prog_array, ctx, bpf_prog_run);
+ * ret = bpf_prog_run_array(rcu_dereference(&bpf_prog_array), ctx, bpf_prog_run);
*
* the structure returned by bpf_prog_array_alloc() should be populated
* with program pointers and the last pointer must be NULL.
@@ -1220,6 +1321,19 @@ struct bpf_prog_array {
struct bpf_prog_array_item items[];
};
+struct bpf_empty_prog_array {
+ struct bpf_prog_array hdr;
+ struct bpf_prog *null_prog;
+};
+
+/* to avoid allocating empty bpf_prog_array for cgroups that
+ * don't have bpf program attached use one global 'bpf_empty_prog_array'
+ * It will not be modified the caller of bpf_prog_array_alloc()
+ * (since caller requested prog_cnt == 0)
+ * that pointer should be 'freed' by bpf_prog_array_free()
+ */
+extern struct bpf_empty_prog_array bpf_empty_prog_array;
+
struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
void bpf_prog_array_free(struct bpf_prog_array *progs);
int bpf_prog_array_length(struct bpf_prog_array *progs);
@@ -1246,6 +1360,7 @@ struct bpf_run_ctx {};
struct bpf_cg_run_ctx {
struct bpf_run_ctx run_ctx;
const struct bpf_prog_array_item *prog_item;
+ int retval;
};
struct bpf_trace_run_ctx {
@@ -1253,6 +1368,12 @@ struct bpf_trace_run_ctx {
u64 bpf_cookie;
};
+struct bpf_tramp_run_ctx {
+ struct bpf_run_ctx run_ctx;
+ u64 bpf_cookie;
+ struct bpf_run_ctx *saved_run_ctx;
+};
+
static inline struct bpf_run_ctx *bpf_set_run_ctx(struct bpf_run_ctx *new_ctx)
{
struct bpf_run_ctx *old_ctx = NULL;
@@ -1279,79 +1400,21 @@ static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
typedef u32 (*bpf_prog_run_fn)(const struct bpf_prog *prog, const void *ctx);
static __always_inline u32
-BPF_PROG_RUN_ARRAY_CG_FLAGS(const struct bpf_prog_array __rcu *array_rcu,
- const void *ctx, bpf_prog_run_fn run_prog,
- u32 *ret_flags)
-{
- const struct bpf_prog_array_item *item;
- const struct bpf_prog *prog;
- const struct bpf_prog_array *array;
- struct bpf_run_ctx *old_run_ctx;
- struct bpf_cg_run_ctx run_ctx;
- u32 ret = 1;
- u32 func_ret;
-
- migrate_disable();
- rcu_read_lock();
- array = rcu_dereference(array_rcu);
- item = &array->items[0];
- old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
- while ((prog = READ_ONCE(item->prog))) {
- run_ctx.prog_item = item;
- func_ret = run_prog(prog, ctx);
- ret &= (func_ret & 1);
- *(ret_flags) |= (func_ret >> 1);
- item++;
- }
- bpf_reset_run_ctx(old_run_ctx);
- rcu_read_unlock();
- migrate_enable();
- return ret;
-}
-
-static __always_inline u32
-BPF_PROG_RUN_ARRAY_CG(const struct bpf_prog_array __rcu *array_rcu,
- const void *ctx, bpf_prog_run_fn run_prog)
-{
- const struct bpf_prog_array_item *item;
- const struct bpf_prog *prog;
- const struct bpf_prog_array *array;
- struct bpf_run_ctx *old_run_ctx;
- struct bpf_cg_run_ctx run_ctx;
- u32 ret = 1;
-
- migrate_disable();
- rcu_read_lock();
- array = rcu_dereference(array_rcu);
- item = &array->items[0];
- old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
- while ((prog = READ_ONCE(item->prog))) {
- run_ctx.prog_item = item;
- ret &= run_prog(prog, ctx);
- item++;
- }
- bpf_reset_run_ctx(old_run_ctx);
- rcu_read_unlock();
- migrate_enable();
- return ret;
-}
-
-static __always_inline u32
-BPF_PROG_RUN_ARRAY(const struct bpf_prog_array __rcu *array_rcu,
+bpf_prog_run_array(const struct bpf_prog_array *array,
const void *ctx, bpf_prog_run_fn run_prog)
{
const struct bpf_prog_array_item *item;
const struct bpf_prog *prog;
- const struct bpf_prog_array *array;
struct bpf_run_ctx *old_run_ctx;
struct bpf_trace_run_ctx run_ctx;
u32 ret = 1;
- migrate_disable();
- rcu_read_lock();
- array = rcu_dereference(array_rcu);
+ RCU_LOCKDEP_WARN(!rcu_read_lock_held(), "no rcu lock held");
+
if (unlikely(!array))
- goto out;
+ return ret;
+
+ migrate_disable();
old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
item = &array->items[0];
while ((prog = READ_ONCE(item->prog))) {
@@ -1360,48 +1423,10 @@ BPF_PROG_RUN_ARRAY(const struct bpf_prog_array __rcu *array_rcu,
item++;
}
bpf_reset_run_ctx(old_run_ctx);
-out:
- rcu_read_unlock();
migrate_enable();
return ret;
}
-/* To be used by __cgroup_bpf_run_filter_skb for EGRESS BPF progs
- * so BPF programs can request cwr for TCP packets.
- *
- * Current cgroup skb programs can only return 0 or 1 (0 to drop the
- * packet. This macro changes the behavior so the low order bit
- * indicates whether the packet should be dropped (0) or not (1)
- * and the next bit is a congestion notification bit. This could be
- * used by TCP to call tcp_enter_cwr()
- *
- * Hence, new allowed return values of CGROUP EGRESS BPF programs are:
- * 0: drop packet
- * 1: keep packet
- * 2: drop packet and cn
- * 3: keep packet and cn
- *
- * This macro then converts it to one of the NET_XMIT or an error
- * code that is then interpreted as drop packet (and no cn):
- * 0: NET_XMIT_SUCCESS skb should be transmitted
- * 1: NET_XMIT_DROP skb should be dropped and cn
- * 2: NET_XMIT_CN skb should be transmitted and cn
- * 3: -EPERM skb should be dropped
- */
-#define BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY(array, ctx, func) \
- ({ \
- u32 _flags = 0; \
- bool _cn; \
- u32 _ret; \
- _ret = BPF_PROG_RUN_ARRAY_CG_FLAGS(array, ctx, func, &_flags); \
- _cn = _flags & BPF_RET_SET_CN; \
- if (_ret) \
- _ret = (_cn ? NET_XMIT_CN : NET_XMIT_SUCCESS); \
- else \
- _ret = (_cn ? NET_XMIT_DROP : -EPERM); \
- _ret; \
- })
-
#ifdef CONFIG_BPF_SYSCALL
DECLARE_PER_CPU(int, bpf_prog_active);
extern struct mutex bpf_stats_enabled_mutex;
@@ -1455,6 +1480,12 @@ void bpf_prog_put(struct bpf_prog *prog);
void bpf_prog_free_id(struct bpf_prog *prog, bool do_idr_lock);
void bpf_map_free_id(struct bpf_map *map, bool do_idr_lock);
+struct bpf_map_value_off_desc *bpf_map_kptr_off_contains(struct bpf_map *map, u32 offset);
+void bpf_map_free_kptr_off_tab(struct bpf_map *map);
+struct bpf_map_value_off *bpf_map_copy_kptr_off_tab(const struct bpf_map *map);
+bool bpf_map_equal_kptr_off_tab(const struct bpf_map *map_a, const struct bpf_map *map_b);
+void bpf_map_free_kptrs(struct bpf_map *map, void *map_value);
+
struct bpf_map *bpf_map_get(u32 ufd);
struct bpf_map *bpf_map_get_with_uref(u32 ufd);
struct bpf_map *__bpf_map_get(struct fd f);
@@ -1548,6 +1579,7 @@ void bpf_link_put(struct bpf_link *link);
int bpf_link_new_fd(struct bpf_link *link);
struct file *bpf_link_new_file(struct bpf_link *link, int *reserved_fd);
struct bpf_link *bpf_link_get_from_fd(u32 ufd);
+struct bpf_link *bpf_link_get_curr_or_next(u32 *id);
int bpf_obj_pin_user(u32 ufd, const char __user *pathname);
int bpf_obj_get_user(const char __user *pathname, int flags);
@@ -1719,7 +1751,6 @@ int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
const union bpf_attr *kattr,
union bpf_attr __user *uattr);
-bool bpf_prog_test_check_kfunc_call(u32 kfunc_id, struct module *owner);
bool btf_ctx_access(int off, int size, enum bpf_access_type type,
const struct bpf_prog *prog,
struct bpf_insn_access_aux *info);
@@ -1749,10 +1780,11 @@ static inline bool bpf_tracing_btf_ctx_access(int off, int size,
int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
const struct btf_type *t, int off, int size,
enum bpf_access_type atype,
- u32 *next_btf_id);
+ u32 *next_btf_id, enum bpf_type_flag *flag);
bool btf_struct_ids_match(struct bpf_verifier_log *log,
const struct btf *btf, u32 id, int off,
- const struct btf *need_btf, u32 need_type_id);
+ const struct btf *need_btf, u32 need_type_id,
+ bool strict);
int btf_distill_func_proto(struct bpf_verifier_log *log,
struct btf *btf,
@@ -1788,6 +1820,11 @@ struct bpf_core_ctx {
int bpf_core_apply(struct bpf_core_ctx *ctx, const struct bpf_core_relo *relo,
int relo_idx, void *insn);
+static inline bool unprivileged_ebpf_enabled(void)
+{
+ return !sysctl_unprivileged_bpf_disabled;
+}
+
#else /* !CONFIG_BPF_SYSCALL */
static inline struct bpf_prog *bpf_prog_get(u32 ufd)
{
@@ -1857,11 +1894,6 @@ static inline int bpf_obj_get_user(const char __user *pathname, int flags)
return -EOPNOTSUPP;
}
-static inline bool dev_map_can_have_prog(struct bpf_map *map)
-{
- return false;
-}
-
static inline void __dev_flush(void)
{
}
@@ -1925,11 +1957,6 @@ static inline int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,
return -EOPNOTSUPP;
}
-static inline bool cpu_map_prog_allowed(struct bpf_map *map)
-{
- return false;
-}
-
static inline struct bpf_prog *bpf_prog_get_type_path(const char *name,
enum bpf_prog_type type)
{
@@ -1971,12 +1998,6 @@ static inline int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
return -ENOTSUPP;
}
-static inline bool bpf_prog_test_check_kfunc_call(u32 kfunc_id,
- struct module *owner)
-{
- return false;
-}
-
static inline void bpf_map_put(struct bpf_map *map)
{
}
@@ -2007,6 +2028,12 @@ bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
{
return NULL;
}
+
+static inline bool unprivileged_ebpf_enabled(void)
+{
+ return false;
+}
+
#endif /* CONFIG_BPF_SYSCALL */
void __bpf_free_used_btfs(struct bpf_prog_aux *aux,
@@ -2049,6 +2076,8 @@ void bpf_offload_dev_netdev_unregister(struct bpf_offload_dev *offdev,
struct net_device *netdev);
bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);
+void unpriv_ebpf_notify(int new_state);
+
#if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);
@@ -2071,6 +2100,9 @@ int bpf_prog_test_run_syscall(struct bpf_prog *prog,
int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog);
int sock_map_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype);
int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value, u64 flags);
+int sock_map_bpf_prog_query(const union bpf_attr *attr,
+ union bpf_attr __user *uattr);
+
void sock_map_unhash(struct sock *sk);
void sock_map_close(struct sock *sk, long timeout);
#else
@@ -2124,6 +2156,12 @@ static inline int sock_map_update_elem_sys(struct bpf_map *map, void *key, void
{
return -EOPNOTSUPP;
}
+
+static inline int sock_map_bpf_prog_query(const union bpf_attr *attr,
+ union bpf_attr __user *uattr)
+{
+ return -EINVAL;
+}
#endif /* CONFIG_BPF_SYSCALL */
#endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */
@@ -2161,6 +2199,7 @@ extern const struct bpf_func_proto bpf_map_delete_elem_proto;
extern const struct bpf_func_proto bpf_map_push_elem_proto;
extern const struct bpf_func_proto bpf_map_pop_elem_proto;
extern const struct bpf_func_proto bpf_map_peek_elem_proto;
+extern const struct bpf_func_proto bpf_map_lookup_percpu_elem_proto;
extern const struct bpf_func_proto bpf_get_prandom_u32_proto;
extern const struct bpf_func_proto bpf_get_smp_processor_id_proto;
@@ -2198,12 +2237,16 @@ extern const struct bpf_func_proto bpf_ringbuf_reserve_proto;
extern const struct bpf_func_proto bpf_ringbuf_submit_proto;
extern const struct bpf_func_proto bpf_ringbuf_discard_proto;
extern const struct bpf_func_proto bpf_ringbuf_query_proto;
+extern const struct bpf_func_proto bpf_ringbuf_reserve_dynptr_proto;
+extern const struct bpf_func_proto bpf_ringbuf_submit_dynptr_proto;
+extern const struct bpf_func_proto bpf_ringbuf_discard_dynptr_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp6_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_udp6_sock_proto;
extern const struct bpf_func_proto bpf_skc_to_unix_sock_proto;
+extern const struct bpf_func_proto bpf_skc_to_mptcp_sock_proto;
extern const struct bpf_func_proto bpf_copy_from_user_proto;
extern const struct bpf_func_proto bpf_snprintf_btf_proto;
extern const struct bpf_func_proto bpf_snprintf_proto;
@@ -2222,6 +2265,8 @@ extern const struct bpf_func_proto bpf_kallsyms_lookup_name_proto;
extern const struct bpf_func_proto bpf_find_vma_proto;
extern const struct bpf_func_proto bpf_loop_proto;
extern const struct bpf_func_proto bpf_strncmp_proto;
+extern const struct bpf_func_proto bpf_copy_from_user_task_proto;
+extern const struct bpf_func_proto bpf_kptr_xchg_proto;
const struct bpf_func_proto *tracing_prog_func_proto(
enum bpf_func_id func_id, const struct bpf_prog *prog);
@@ -2334,6 +2379,9 @@ enum bpf_text_poke_type {
int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
void *addr1, void *addr2);
+void *bpf_arch_text_copy(void *dst, void *src, size_t len);
+int bpf_arch_text_invalidate(void *dst, size_t len);
+
struct btf_id_set;
bool btf_id_set_contains(const struct btf_id_set *set, u32 id);
@@ -2343,4 +2391,33 @@ int bpf_bprintf_prepare(char *fmt, u32 fmt_size, const u64 *raw_args,
u32 **bin_buf, u32 num_args);
void bpf_bprintf_cleanup(void);
+/* the implementation of the opaque uapi struct bpf_dynptr */
+struct bpf_dynptr_kern {
+ void *data;
+ /* Size represents the number of usable bytes of dynptr data.
+ * If for example the offset is at 4 for a local dynptr whose data is
+ * of type u64, the number of usable bytes is 4.
+ *
+ * The upper 8 bits are reserved. It is as follows:
+ * Bits 0 - 23 = size
+ * Bits 24 - 30 = dynptr type
+ * Bit 31 = whether dynptr is read-only
+ */
+ u32 size;
+ u32 offset;
+} __aligned(8);
+
+enum bpf_dynptr_type {
+ BPF_DYNPTR_TYPE_INVALID,
+ /* Points to memory that is local to the bpf program */
+ BPF_DYNPTR_TYPE_LOCAL,
+ /* Underlying data is a ringbuf record */
+ BPF_DYNPTR_TYPE_RINGBUF,
+};
+
+void bpf_dynptr_init(struct bpf_dynptr_kern *ptr, void *data,
+ enum bpf_dynptr_type type, u32 offset, u32 size);
+void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr);
+int bpf_dynptr_check_size(u32 size);
+
#endif /* _LINUX_BPF_H */
diff --git a/include/linux/bpf_local_storage.h b/include/linux/bpf_local_storage.h
index 37b3906af8b1..7ea18d4da84b 100644
--- a/include/linux/bpf_local_storage.h
+++ b/include/linux/bpf_local_storage.h
@@ -143,9 +143,9 @@ void bpf_selem_link_storage_nolock(struct bpf_local_storage *local_storage,
bool bpf_selem_unlink_storage_nolock(struct bpf_local_storage *local_storage,
struct bpf_local_storage_elem *selem,
- bool uncharge_omem);
+ bool uncharge_omem, bool use_trace_rcu);
-void bpf_selem_unlink(struct bpf_local_storage_elem *selem);
+void bpf_selem_unlink(struct bpf_local_storage_elem *selem, bool use_trace_rcu);
void bpf_selem_link_map(struct bpf_local_storage_map *smap,
struct bpf_local_storage_elem *selem);
@@ -154,16 +154,17 @@ void bpf_selem_unlink_map(struct bpf_local_storage_elem *selem);
struct bpf_local_storage_elem *
bpf_selem_alloc(struct bpf_local_storage_map *smap, void *owner, void *value,
- bool charge_mem);
+ bool charge_mem, gfp_t gfp_flags);
int
bpf_local_storage_alloc(void *owner,
struct bpf_local_storage_map *smap,
- struct bpf_local_storage_elem *first_selem);
+ struct bpf_local_storage_elem *first_selem,
+ gfp_t gfp_flags);
struct bpf_local_storage_data *
bpf_local_storage_update(void *owner, struct bpf_local_storage_map *smap,
- void *value, u64 map_flags);
+ void *value, u64 map_flags, gfp_t gfp_flags);
void bpf_local_storage_free_rcu(struct rcu_head *rcu);
diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h
index 48a91c51c015..2b9112b80171 100644
--- a/include/linux/bpf_types.h
+++ b/include/linux/bpf_types.h
@@ -140,3 +140,5 @@ BPF_LINK_TYPE(BPF_LINK_TYPE_XDP, xdp)
#ifdef CONFIG_PERF_EVENTS
BPF_LINK_TYPE(BPF_LINK_TYPE_PERF_EVENT, perf)
#endif
+BPF_LINK_TYPE(BPF_LINK_TYPE_KPROBE_MULTI, kprobe_multi)
+BPF_LINK_TYPE(BPF_LINK_TYPE_STRUCT_OPS, struct_ops)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 143401d4c9d9..e8439f6cbe57 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -72,6 +72,18 @@ struct bpf_reg_state {
u32 mem_size; /* for PTR_TO_MEM | PTR_TO_MEM_OR_NULL */
+ /* For dynptr stack slots */
+ struct {
+ enum bpf_dynptr_type type;
+ /* A dynptr is 16 bytes so it takes up 2 stack slots.
+ * We need to track which slot is the first slot
+ * to protect against cases where the user may try to
+ * pass in an address starting at the second slot of the
+ * dynptr.
+ */
+ bool first_slot;
+ } dynptr;
+
/* Max size from any of the above. */
struct {
unsigned long raw1;
@@ -88,6 +100,8 @@ struct bpf_reg_state {
* for the purpose of tracking that it's freed.
* For PTR_TO_SOCKET this is used to share which pointers retain the
* same reference to the socket, to determine proper reference freeing.
+ * For stack slots that are dynptrs, this is used to track references to
+ * the dynptr to determine proper reference freeing.
*/
u32 id;
/* PTR_TO_SOCKET and PTR_TO_TCP_SOCK could be a ptr returned
@@ -174,9 +188,15 @@ enum bpf_stack_slot_type {
STACK_SPILL, /* register spilled into stack */
STACK_MISC, /* BPF program wrote some data into this slot */
STACK_ZERO, /* BPF program wrote constant zero */
+ /* A dynptr is stored in this stack slot. The type of dynptr
+ * is stored in bpf_stack_state->spilled_ptr.dynptr.type
+ */
+ STACK_DYNPTR,
};
#define BPF_REG_SIZE 8 /* size of eBPF register in bytes */
+#define BPF_DYNPTR_SIZE sizeof(struct bpf_dynptr_kern)
+#define BPF_DYNPTR_NR_SLOTS (BPF_DYNPTR_SIZE / BPF_REG_SIZE)
struct bpf_stack_state {
struct bpf_reg_state spilled_ptr;
@@ -519,8 +539,13 @@ bpf_prog_offload_replace_insn(struct bpf_verifier_env *env, u32 off,
void
bpf_prog_offload_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
-int check_ctx_reg(struct bpf_verifier_env *env,
- const struct bpf_reg_state *reg, int regno);
+int check_ptr_off_reg(struct bpf_verifier_env *env,
+ const struct bpf_reg_state *reg, int regno);
+int check_func_arg_reg_off(struct bpf_verifier_env *env,
+ const struct bpf_reg_state *reg, int regno,
+ enum bpf_arg_type arg_type);
+int check_kfunc_mem_size_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg,
+ u32 regno);
int check_mem_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg,
u32 regno, u32 mem_size);
@@ -564,4 +589,11 @@ static inline u32 type_flag(u32 type)
return type & ~BPF_BASE_TYPE_MASK;
}
+/* only use after check_attach_btf_id() */
+static inline enum bpf_prog_type resolve_prog_type(struct bpf_prog *prog)
+{
+ return prog->type == BPF_PROG_TYPE_EXT ?
+ prog->aux->dst_prog->type : prog->type;
+}
+
#endif /* _LINUX_BPF_VERIFIER_H */
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
index 6b211323a489..9e97ced2896d 100644
--- a/include/linux/bsg-lib.h
+++ b/include/linux/bsg-lib.h
@@ -10,7 +10,6 @@
#define _BLK_BSG_
#include <linux/blkdev.h>
-#include <scsi/scsi_request.h>
struct bsg_job;
struct request;
diff --git a/include/linux/btf.h b/include/linux/btf.h
index 0c74348cbc9d..2611cea2c2b6 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -12,11 +12,42 @@
#define BTF_TYPE_EMIT(type) ((void)(type *)0)
#define BTF_TYPE_EMIT_ENUM(enum_val) ((void)enum_val)
+enum btf_kfunc_type {
+ BTF_KFUNC_TYPE_CHECK,
+ BTF_KFUNC_TYPE_ACQUIRE,
+ BTF_KFUNC_TYPE_RELEASE,
+ BTF_KFUNC_TYPE_RET_NULL,
+ BTF_KFUNC_TYPE_KPTR_ACQUIRE,
+ BTF_KFUNC_TYPE_MAX,
+};
+
struct btf;
struct btf_member;
struct btf_type;
union bpf_attr;
struct btf_show;
+struct btf_id_set;
+
+struct btf_kfunc_id_set {
+ struct module *owner;
+ union {
+ struct {
+ struct btf_id_set *check_set;
+ struct btf_id_set *acquire_set;
+ struct btf_id_set *release_set;
+ struct btf_id_set *ret_null_set;
+ struct btf_id_set *kptr_acquire_set;
+ };
+ struct btf_id_set *sets[BTF_KFUNC_TYPE_MAX];
+ };
+};
+
+struct btf_id_dtor_kfunc {
+ u32 btf_id;
+ u32 kfunc_btf_id;
+};
+
+typedef void (*btf_dtor_kfunc_t)(void *);
extern const struct file_operations btf_fops;
@@ -101,6 +132,8 @@ bool btf_member_is_reg_int(const struct btf *btf, const struct btf_type *s,
u32 expected_offset, u32 expected_size);
int btf_find_spin_lock(const struct btf *btf, const struct btf_type *t);
int btf_find_timer(const struct btf *btf, const struct btf_type *t);
+struct bpf_map_value_off *btf_parse_kptrs(const struct btf *btf,
+ const struct btf_type *t);
bool btf_type_is_void(const struct btf_type *t);
s32 btf_find_by_name_kind(const struct btf *btf, const char *name, u8 kind);
const struct btf_type *btf_type_skip_modifiers(const struct btf *btf,
@@ -216,6 +249,11 @@ static inline bool btf_type_is_var(const struct btf_type *t)
return BTF_INFO_KIND(t->info) == BTF_KIND_VAR;
}
+static inline bool btf_type_is_type_tag(const struct btf_type *t)
+{
+ return BTF_INFO_KIND(t->info) == BTF_KIND_TYPE_TAG;
+}
+
/* union is only a special case of struct:
* all its offsetof(member) == 0
*/
@@ -300,6 +338,11 @@ static inline const struct btf_var_secinfo *btf_type_var_secinfo(
return (const struct btf_var_secinfo *)(t + 1);
}
+static inline struct btf_param *btf_params(const struct btf_type *t)
+{
+ return (struct btf_param *)(t + 1);
+}
+
#ifdef CONFIG_BPF_SYSCALL
struct bpf_prog;
@@ -307,6 +350,14 @@ const struct btf_type *btf_type_by_id(const struct btf *btf, u32 type_id);
const char *btf_name_by_offset(const struct btf *btf, u32 offset);
struct btf *btf_parse_vmlinux(void);
struct btf *bpf_prog_get_target_btf(const struct bpf_prog *prog);
+bool btf_kfunc_id_set_contains(const struct btf *btf,
+ enum bpf_prog_type prog_type,
+ enum btf_kfunc_type type, u32 kfunc_btf_id);
+int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
+ const struct btf_kfunc_id_set *s);
+s32 btf_find_dtor_kfunc(struct btf *btf, u32 btf_id);
+int register_btf_id_dtor_kfuncs(const struct btf_id_dtor_kfunc *dtors, u32 add_cnt,
+ struct module *owner);
#else
static inline const struct btf_type *btf_type_by_id(const struct btf *btf,
u32 type_id)
@@ -318,50 +369,27 @@ static inline const char *btf_name_by_offset(const struct btf *btf,
{
return NULL;
}
-#endif
-
-struct kfunc_btf_id_set {
- struct list_head list;
- struct btf_id_set *set;
- struct module *owner;
-};
-
-struct kfunc_btf_id_list {
- struct list_head list;
- struct mutex mutex;
-};
-
-#ifdef CONFIG_DEBUG_INFO_BTF_MODULES
-void register_kfunc_btf_id_set(struct kfunc_btf_id_list *l,
- struct kfunc_btf_id_set *s);
-void unregister_kfunc_btf_id_set(struct kfunc_btf_id_list *l,
- struct kfunc_btf_id_set *s);
-bool bpf_check_mod_kfunc_call(struct kfunc_btf_id_list *klist, u32 kfunc_id,
- struct module *owner);
-
-extern struct kfunc_btf_id_list bpf_tcp_ca_kfunc_list;
-extern struct kfunc_btf_id_list prog_test_kfunc_list;
-#else
-static inline void register_kfunc_btf_id_set(struct kfunc_btf_id_list *l,
- struct kfunc_btf_id_set *s)
+static inline bool btf_kfunc_id_set_contains(const struct btf *btf,
+ enum bpf_prog_type prog_type,
+ enum btf_kfunc_type type,
+ u32 kfunc_btf_id)
{
+ return false;
}
-static inline void unregister_kfunc_btf_id_set(struct kfunc_btf_id_list *l,
- struct kfunc_btf_id_set *s)
+static inline int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
+ const struct btf_kfunc_id_set *s)
{
+ return 0;
}
-static inline bool bpf_check_mod_kfunc_call(struct kfunc_btf_id_list *klist,
- u32 kfunc_id, struct module *owner)
+static inline s32 btf_find_dtor_kfunc(struct btf *btf, u32 btf_id)
{
- return false;
+ return -ENOENT;
+}
+static inline int register_btf_id_dtor_kfuncs(const struct btf_id_dtor_kfunc *dtors,
+ u32 add_cnt, struct module *owner)
+{
+ return 0;
}
-
-static struct kfunc_btf_id_list bpf_tcp_ca_kfunc_list __maybe_unused;
-static struct kfunc_btf_id_list prog_test_kfunc_list __maybe_unused;
#endif
-#define DEFINE_KFUNC_BTF_ID_SET(set, name) \
- struct kfunc_btf_id_set name = { LIST_HEAD_INIT(name.list), (set), \
- THIS_MODULE }
-
#endif
diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h
index 919c0fde1c51..335a19092368 100644
--- a/include/linux/btf_ids.h
+++ b/include/linux/btf_ids.h
@@ -11,6 +11,7 @@ struct btf_id_set {
#ifdef CONFIG_DEBUG_INFO_BTF
#include <linux/compiler.h> /* for __PASTE */
+#include <linux/compiler_attributes.h> /* for __maybe_unused */
/*
* Following macros help to define lists of BTF IDs placed
@@ -146,14 +147,14 @@ extern struct btf_id_set name;
#else
-#define BTF_ID_LIST(name) static u32 name[5];
+#define BTF_ID_LIST(name) static u32 __maybe_unused name[5];
#define BTF_ID(prefix, name)
#define BTF_ID_UNUSED
-#define BTF_ID_LIST_GLOBAL(name, n) u32 name[n];
-#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 name[1];
-#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 name[1];
-#define BTF_SET_START(name) static struct btf_id_set name = { 0 };
-#define BTF_SET_START_GLOBAL(name) static struct btf_id_set name = { 0 };
+#define BTF_ID_LIST_GLOBAL(name, n) u32 __maybe_unused name[n];
+#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 __maybe_unused name[1];
+#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 __maybe_unused name[1];
+#define BTF_SET_START(name) static struct btf_id_set __maybe_unused name = { 0 };
+#define BTF_SET_START_GLOBAL(name) static struct btf_id_set __maybe_unused name = { 0 };
#define BTF_SET_END(name)
#endif /* CONFIG_DEBUG_INFO_BTF */
@@ -177,7 +178,8 @@ extern struct btf_id_set name;
BTF_SOCK_TYPE(BTF_SOCK_TYPE_TCP6, tcp6_sock) \
BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP, udp_sock) \
BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP6, udp6_sock) \
- BTF_SOCK_TYPE(BTF_SOCK_TYPE_UNIX, unix_sock)
+ BTF_SOCK_TYPE(BTF_SOCK_TYPE_UNIX, unix_sock) \
+ BTF_SOCK_TYPE(BTF_SOCK_TYPE_MPTCP, mptcp_sock)
enum {
#define BTF_SOCK_TYPE(name, str) name,
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 36f33685c8c0..c9d1463bb20f 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -144,8 +144,9 @@ BUFFER_FNS(Defer_Completion, defer_completion)
((struct buffer_head *)page_private(page)); \
})
#define page_has_buffers(page) PagePrivate(page)
+#define folio_buffers(folio) folio_get_private(folio)
-void buffer_check_dirty_writeback(struct page *page,
+void buffer_check_dirty_writeback(struct folio *folio,
bool *dirty, bool *writeback);
/*
@@ -157,7 +158,7 @@ void mark_buffer_write_io_error(struct buffer_head *bh);
void touch_buffer(struct buffer_head *bh);
void set_bh_page(struct buffer_head *bh,
struct page *page, unsigned long offset);
-int try_to_free_buffers(struct page *);
+bool try_to_free_buffers(struct folio *);
struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size,
bool retry);
void create_empty_buffers(struct page *, unsigned long,
@@ -216,18 +217,16 @@ extern int buffer_heads_over_limit;
* Generic address_space_operations implementations for buffer_head-backed
* address_spaces.
*/
-void block_invalidatepage(struct page *page, unsigned int offset,
- unsigned int length);
+void block_invalidate_folio(struct folio *folio, size_t offset, size_t length);
int block_write_full_page(struct page *page, get_block_t *get_block,
struct writeback_control *wbc);
int __block_write_full_page(struct inode *inode, struct page *page,
get_block_t *get_block, struct writeback_control *wbc,
bh_end_io_t *handler);
-int block_read_full_page(struct page*, get_block_t*);
-int block_is_partially_uptodate(struct page *page, unsigned long from,
- unsigned long count);
+int block_read_full_folio(struct folio *, get_block_t *);
+bool block_is_partially_uptodate(struct folio *, size_t from, size_t count);
int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
- unsigned flags, struct page **pagep, get_block_t *get_block);
+ struct page **pagep, get_block_t *get_block);
int __block_write_begin(struct page *page, loff_t pos, unsigned len,
get_block_t *get_block);
int block_write_end(struct file *, struct address_space *,
@@ -239,7 +238,7 @@ int generic_write_end(struct file *, struct address_space *,
void page_zero_new_buffers(struct page *page, unsigned from, unsigned to);
void clean_page_buffers(struct page *page);
int cont_write_begin(struct file *, struct address_space *, loff_t,
- unsigned, unsigned, struct page **, void **,
+ unsigned, struct page **, void **,
get_block_t *, loff_t *);
int generic_cont_expand_simple(struct inode *inode, loff_t size);
int block_commit_write(struct page *page, unsigned from, unsigned to);
@@ -259,7 +258,7 @@ static inline vm_fault_t block_page_mkwrite_return(int err)
}
sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
int block_truncate_page(struct address_space *, loff_t, get_block_t *);
-int nobh_write_begin(struct address_space *, loff_t, unsigned, unsigned,
+int nobh_write_begin(struct address_space *, loff_t, unsigned len,
struct page **, void **, get_block_t*);
int nobh_write_end(struct file *, struct address_space *,
loff_t, unsigned, unsigned,
@@ -398,12 +397,12 @@ __bread(struct block_device *bdev, sector_t block, unsigned size)
return __bread_gfp(bdev, block, size, __GFP_MOVABLE);
}
-extern int __set_page_dirty_buffers(struct page *page);
+bool block_dirty_folio(struct address_space *mapping, struct folio *folio);
#else /* CONFIG_BLOCK */
static inline void buffer_init(void) {}
-static inline int try_to_free_buffers(struct page *page) { return 1; }
+static inline bool try_to_free_buffers(struct folio *folio) { return true; }
static inline int inode_has_buffers(struct inode *inode) { return 0; }
static inline void invalidate_inode_buffers(struct inode *inode) {}
static inline int remove_inode_buffers(struct inode *inode) { return 1; }
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 4b13e0a3e15b..c9a4c96c9943 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -190,7 +190,7 @@ static inline void be64_add_cpu(__be64 *var, u64 val)
static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
{
- int i;
+ size_t i;
for (i = 0; i < len; i++)
dst[i] = cpu_to_be32(src[i]);
@@ -198,7 +198,7 @@ static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
static inline void be32_to_cpu_array(u32 *dst, const __be32 *src, size_t len)
{
- int i;
+ size_t i;
for (i = 0; i < len; i++)
dst[i] = be32_to_cpu(src[i]);
diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h
index fef8b607f97e..a6189d21f2ba 100644
--- a/include/linux/cacheflush.h
+++ b/include/linux/cacheflush.h
@@ -4,6 +4,8 @@
#include <asm/cacheflush.h>
+struct folio;
+
#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
void flush_dcache_folio(struct folio *folio);
diff --git a/include/linux/can/bittiming.h b/include/linux/can/bittiming.h
index a81652d1c6f3..7ae21c0f7f23 100644
--- a/include/linux/can/bittiming.h
+++ b/include/linux/can/bittiming.h
@@ -113,7 +113,7 @@ struct can_tdc_const {
};
#ifdef CONFIG_CAN_CALC_BITTIMING
-int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
+int can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,
const struct can_bittiming_const *btc);
void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
@@ -121,7 +121,7 @@ void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
u32 *ctrlmode, u32 ctrlmode_supported);
#else /* !CONFIG_CAN_CALC_BITTIMING */
static inline int
-can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
+can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,
const struct can_bittiming_const *btc)
{
netdev_err(dev, "bit-timing calculation not available\n");
@@ -136,7 +136,7 @@ can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
}
#endif /* CONFIG_CAN_CALC_BITTIMING */
-int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,
+int can_get_bittiming(const struct net_device *dev, struct can_bittiming *bt,
const struct can_bittiming_const *btc,
const u32 *bitrate_const,
const unsigned int bitrate_const_cnt);
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index c2ea47f30046..e22dc03c850e 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -17,7 +17,6 @@
#include <linux/can.h>
#include <linux/can/bittiming.h>
#include <linux/can/error.h>
-#include <linux/can/led.h>
#include <linux/can/length.h>
#include <linux/can/netlink.h>
#include <linux/can/skb.h>
@@ -85,15 +84,6 @@ struct can_priv {
int (*do_get_berr_counter)(const struct net_device *dev,
struct can_berr_counter *bec);
int (*do_get_auto_tdcv)(const struct net_device *dev, u32 *tdcv);
-
-#ifdef CONFIG_CAN_LEDS
- struct led_trigger *tx_led_trig;
- char tx_led_trig_name[CAN_LED_NAME_SZ];
- struct led_trigger *rx_led_trig;
- char rx_led_trig_name[CAN_LED_NAME_SZ];
- struct led_trigger *rxtx_led_trig;
- char rxtx_led_trig_name[CAN_LED_NAME_SZ];
-#endif
};
static inline bool can_tdc_is_enabled(const struct can_priv *priv)
diff --git a/include/linux/can/led.h b/include/linux/can/led.h
deleted file mode 100644
index 7c3cfd798c56..000000000000
--- a/include/linux/can/led.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
- */
-
-#ifndef _CAN_LED_H
-#define _CAN_LED_H
-
-#include <linux/if.h>
-#include <linux/leds.h>
-#include <linux/netdevice.h>
-
-enum can_led_event {
- CAN_LED_EVENT_OPEN,
- CAN_LED_EVENT_STOP,
- CAN_LED_EVENT_TX,
- CAN_LED_EVENT_RX,
-};
-
-#ifdef CONFIG_CAN_LEDS
-
-/* keep space for interface name + "-tx"/"-rx"/"-rxtx"
- * suffix and null terminator
- */
-#define CAN_LED_NAME_SZ (IFNAMSIZ + 6)
-
-void can_led_event(struct net_device *netdev, enum can_led_event event);
-void devm_can_led_init(struct net_device *netdev);
-int __init can_led_notifier_init(void);
-void __exit can_led_notifier_exit(void);
-
-#else
-
-static inline void can_led_event(struct net_device *netdev,
- enum can_led_event event)
-{
-}
-static inline void devm_can_led_init(struct net_device *netdev)
-{
-}
-static inline int can_led_notifier_init(void)
-{
- return 0;
-}
-static inline void can_led_notifier_exit(void)
-{
-}
-
-#endif
-
-#endif /* !_CAN_LED_H */
diff --git a/include/linux/can/rx-offload.h b/include/linux/can/rx-offload.h
index c11477620403..c205c51d79c9 100644
--- a/include/linux/can/rx-offload.h
+++ b/include/linux/can/rx-offload.h
@@ -42,8 +42,8 @@ int can_rx_offload_add_manual(struct net_device *dev,
int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
u64 reg);
int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
-int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
- struct sk_buff *skb, u32 timestamp);
+int can_rx_offload_queue_timestamp(struct can_rx_offload *offload,
+ struct sk_buff *skb, u32 timestamp);
unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
unsigned int idx, u32 timestamp,
unsigned int *frame_len_ptr);
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
index efd8205282da..cb0d6cd1c12f 100644
--- a/include/linux/cc_platform.h
+++ b/include/linux/cc_platform.h
@@ -72,6 +72,24 @@ enum cc_attr {
* Examples include TDX guest & SEV.
*/
CC_ATTR_GUEST_UNROLL_STRING_IO,
+
+ /**
+ * @CC_ATTR_SEV_SNP: Guest SNP is active.
+ *
+ * The platform/OS is running as a guest/virtual machine and actively
+ * using AMD SEV-SNP features.
+ */
+ CC_ATTR_GUEST_SEV_SNP,
+
+ /**
+ * @CC_ATTR_HOTPLUG_DISABLED: Hotplug is not supported or disabled.
+ *
+ * The platform/OS is running as a guest/virtual machine does not
+ * support CPU hotplug feature.
+ *
+ * Examples include TDX Guest.
+ */
+ CC_ATTR_HOTPLUG_DISABLED,
};
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index 0a89f111e00e..67caa909e3e6 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -77,7 +77,6 @@ struct cdrom_device_ops {
int (*tray_move) (struct cdrom_device_info *, int);
int (*lock_door) (struct cdrom_device_info *, int);
int (*select_speed) (struct cdrom_device_info *, int);
- int (*select_disc) (struct cdrom_device_info *, int);
int (*get_last_session) (struct cdrom_device_info *,
struct cdrom_multisession *);
int (*get_mcn) (struct cdrom_device_info *,
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 7ad6c3d0db7d..86bf82dbd8b8 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -28,8 +28,8 @@
#define CEPH_INO_ROOT 1
-#define CEPH_INO_CEPH 2 /* hidden .ceph dir */
-#define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */
+#define CEPH_INO_CEPH 2 /* hidden .ceph dir */
+#define CEPH_INO_GLOBAL_SNAPREALM 3 /* global dummy snaprealm */
/* arbitrary limit on max # of monitors (cluster of 3 is typical) */
#define CEPH_MAX_MON 31
@@ -328,6 +328,7 @@ enum {
CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
CEPH_MDS_OP_LOOKUPINO = 0x00104,
CEPH_MDS_OP_LOOKUPNAME = 0x00105,
+ CEPH_MDS_OP_GETVXATTR = 0x00106,
CEPH_MDS_OP_SETXATTR = 0x01105,
CEPH_MDS_OP_RMXATTR = 0x01106,
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 409d8c29bc4f..00af2c98da75 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -35,6 +35,7 @@
#define CEPH_OPT_TCP_NODELAY (1<<4) /* TCP_NODELAY on TCP sockets */
#define CEPH_OPT_NOMSGSIGN (1<<5) /* don't sign msgs (msgr1) */
#define CEPH_OPT_ABORT_ON_FULL (1<<6) /* abort w/ ENOSPC when full */
+#define CEPH_OPT_RXBOUNCE (1<<7) /* double-buffer read data */
#define CEPH_OPT_DEFAULT (CEPH_OPT_TCP_NODELAY)
@@ -283,6 +284,7 @@ DEFINE_RB_LOOKUP_FUNC(name, type, keyfld, nodefld)
extern struct kmem_cache *ceph_inode_cachep;
extern struct kmem_cache *ceph_cap_cachep;
+extern struct kmem_cache *ceph_cap_snap_cachep;
extern struct kmem_cache *ceph_cap_flush_cachep;
extern struct kmem_cache *ceph_dentry_cachep;
extern struct kmem_cache *ceph_file_cachep;
@@ -295,13 +297,13 @@ extern bool libceph_compatible(void *data);
extern const char *ceph_msg_type_name(int type);
extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
-extern void *ceph_kvmalloc(size_t size, gfp_t flags);
+extern int ceph_parse_fsid(const char *str, struct ceph_fsid *fsid);
struct fs_parameter;
struct fc_log;
struct ceph_options *ceph_alloc_options(void);
int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
- struct fc_log *l);
+ struct fc_log *l, char delim);
int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
struct fc_log *l);
int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 0e6e9ad3c3bf..e7f2fb2fc207 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -383,6 +383,10 @@ struct ceph_connection_v2_info {
struct ceph_gcm_nonce in_gcm_nonce;
struct ceph_gcm_nonce out_gcm_nonce;
+ struct page **in_enc_pages;
+ int in_enc_page_cnt;
+ int in_enc_resid;
+ int in_enc_i;
struct page **out_enc_pages;
int out_enc_page_cnt;
int out_enc_resid;
@@ -457,6 +461,7 @@ struct ceph_connection {
struct ceph_msg *out_msg; /* sending message (== tail of
out_sent) */
+ struct page *bounce_page;
u32 in_front_crc, in_middle_crc, in_data_crc; /* calculated crc */
struct timespec64 last_keepalive_ack; /* keepalive2 ack stamp */
@@ -532,7 +537,7 @@ extern const char *ceph_pr_addr(const struct ceph_entity_addr *addr);
extern int ceph_parse_ips(const char *c, const char *end,
struct ceph_entity_addr *addr,
- int max_count, int *count);
+ int max_count, int *count, char delim);
extern int ceph_msgr_init(void);
extern void ceph_msgr_exit(void);
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 3431011f364d..cba8a6ffc329 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -287,6 +287,9 @@ struct ceph_osd_linger_request {
rados_watcherrcb_t errcb;
void *data;
+ struct ceph_pagelist *request_pl;
+ struct page **notify_id_pages;
+
struct page ***preply_pages;
size_t *preply_len;
};
diff --git a/include/linux/cfi.h b/include/linux/cfi.h
index 879744aaa6e0..c6dfc1ed0626 100644
--- a/include/linux/cfi.h
+++ b/include/linux/cfi.h
@@ -34,8 +34,17 @@ static inline void cfi_module_remove(struct module *mod, unsigned long base_addr
#else /* !CONFIG_CFI_CLANG */
-#define __CFI_ADDRESSABLE(fn, __attr)
+#ifdef CONFIG_X86_KERNEL_IBT
+
+#define __CFI_ADDRESSABLE(fn, __attr) \
+ const void *__cfi_jt_ ## fn __visible __attr = (void *)&fn
+
+#endif /* CONFIG_X86_KERNEL_IBT */
#endif /* CONFIG_CFI_CLANG */
+#ifndef __CFI_ADDRESSABLE
+#define __CFI_ADDRESSABLE(fn, __attr)
+#endif
+
#endif /* _LINUX_CFI_H */
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 75c151413fda..0d1ada8968d7 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -450,6 +450,7 @@ extern struct mutex cgroup_mutex;
extern spinlock_t css_set_lock;
#define task_css_set_check(task, __c) \
rcu_dereference_check((task)->cgroups, \
+ rcu_read_lock_sched_held() || \
lockdep_is_held(&cgroup_mutex) || \
lockdep_is_held(&css_set_lock) || \
((task)->flags & PF_EXITING) || (__c))
@@ -791,11 +792,9 @@ static inline void cgroup_account_cputime(struct task_struct *task,
cpuacct_charge(task, delta_exec);
- rcu_read_lock();
cgrp = task_dfl_cgroup(task);
if (cgroup_parent(cgrp))
__cgroup_account_cputime(cgrp, delta_exec);
- rcu_read_unlock();
}
static inline void cgroup_account_cputime_field(struct task_struct *task,
@@ -806,11 +805,9 @@ static inline void cgroup_account_cputime_field(struct task_struct *task,
cpuacct_account_field(task, index, delta_exec);
- rcu_read_lock();
cgrp = task_dfl_cgroup(task);
if (cgroup_parent(cgrp))
__cgroup_account_cputime_field(cgrp, index, delta_exec);
- rcu_read_unlock();
}
#else /* CONFIG_CGROUPS */
diff --git a/include/linux/cgroup_api.h b/include/linux/cgroup_api.h
new file mode 100644
index 000000000000..d0cfe8025111
--- /dev/null
+++ b/include/linux/cgroup_api.h
@@ -0,0 +1 @@
+#include <linux/cgroup.h>
diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
deleted file mode 100644
index 5f5730c1d324..000000000000
--- a/include/linux/cleancache.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_CLEANCACHE_H
-#define _LINUX_CLEANCACHE_H
-
-#include <linux/fs.h>
-#include <linux/exportfs.h>
-#include <linux/mm.h>
-
-#define CLEANCACHE_NO_POOL -1
-#define CLEANCACHE_NO_BACKEND -2
-#define CLEANCACHE_NO_BACKEND_SHARED -3
-
-#define CLEANCACHE_KEY_MAX 6
-
-/*
- * cleancache requires every file with a page in cleancache to have a
- * unique key unless/until the file is removed/truncated. For some
- * filesystems, the inode number is unique, but for "modern" filesystems
- * an exportable filehandle is required (see exportfs.h)
- */
-struct cleancache_filekey {
- union {
- ino_t ino;
- __u32 fh[CLEANCACHE_KEY_MAX];
- u32 key[CLEANCACHE_KEY_MAX];
- } u;
-};
-
-struct cleancache_ops {
- int (*init_fs)(size_t);
- int (*init_shared_fs)(uuid_t *uuid, size_t);
- int (*get_page)(int, struct cleancache_filekey,
- pgoff_t, struct page *);
- void (*put_page)(int, struct cleancache_filekey,
- pgoff_t, struct page *);
- void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t);
- void (*invalidate_inode)(int, struct cleancache_filekey);
- void (*invalidate_fs)(int);
-};
-
-extern int cleancache_register_ops(const struct cleancache_ops *ops);
-extern void __cleancache_init_fs(struct super_block *);
-extern void __cleancache_init_shared_fs(struct super_block *);
-extern int __cleancache_get_page(struct page *);
-extern void __cleancache_put_page(struct page *);
-extern void __cleancache_invalidate_page(struct address_space *, struct page *);
-extern void __cleancache_invalidate_inode(struct address_space *);
-extern void __cleancache_invalidate_fs(struct super_block *);
-
-#ifdef CONFIG_CLEANCACHE
-#define cleancache_enabled (1)
-static inline bool cleancache_fs_enabled_mapping(struct address_space *mapping)
-{
- return mapping->host->i_sb->cleancache_poolid >= 0;
-}
-static inline bool cleancache_fs_enabled(struct page *page)
-{
- return cleancache_fs_enabled_mapping(page->mapping);
-}
-#else
-#define cleancache_enabled (0)
-#define cleancache_fs_enabled(_page) (0)
-#define cleancache_fs_enabled_mapping(_page) (0)
-#endif
-
-/*
- * The shim layer provided by these inline functions allows the compiler
- * to reduce all cleancache hooks to nothingness if CONFIG_CLEANCACHE
- * is disabled, to a single global variable check if CONFIG_CLEANCACHE
- * is enabled but no cleancache "backend" has dynamically enabled it,
- * and, for the most frequent cleancache ops, to a single global variable
- * check plus a superblock element comparison if CONFIG_CLEANCACHE is enabled
- * and a cleancache backend has dynamically enabled cleancache, but the
- * filesystem referenced by that cleancache op has not enabled cleancache.
- * As a result, CONFIG_CLEANCACHE can be enabled by default with essentially
- * no measurable performance impact.
- */
-
-static inline void cleancache_init_fs(struct super_block *sb)
-{
- if (cleancache_enabled)
- __cleancache_init_fs(sb);
-}
-
-static inline void cleancache_init_shared_fs(struct super_block *sb)
-{
- if (cleancache_enabled)
- __cleancache_init_shared_fs(sb);
-}
-
-static inline int cleancache_get_page(struct page *page)
-{
- if (cleancache_enabled && cleancache_fs_enabled(page))
- return __cleancache_get_page(page);
- return -1;
-}
-
-static inline void cleancache_put_page(struct page *page)
-{
- if (cleancache_enabled && cleancache_fs_enabled(page))
- __cleancache_put_page(page);
-}
-
-static inline void cleancache_invalidate_page(struct address_space *mapping,
- struct page *page)
-{
- /* careful... page->mapping is NULL sometimes when this is called */
- if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
- __cleancache_invalidate_page(mapping, page);
-}
-
-static inline void cleancache_invalidate_inode(struct address_space *mapping)
-{
- if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
- __cleancache_invalidate_inode(mapping);
-}
-
-static inline void cleancache_invalidate_fs(struct super_block *sb)
-{
- if (cleancache_enabled)
- __cleancache_invalidate_fs(sb);
-}
-
-#endif /* _LINUX_CLEANCACHE_H */
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index f59c875271a0..c10dc4c659e2 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -490,6 +490,13 @@ struct clk_hw *__clk_hw_register_gate(struct device *dev,
unsigned long flags,
void __iomem *reg, u8 bit_idx,
u8 clk_gate_flags, spinlock_t *lock);
+struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
+ struct device_node *np, const char *name,
+ const char *parent_name, const struct clk_hw *parent_hw,
+ const struct clk_parent_data *parent_data,
+ unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock);
struct clk *clk_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
@@ -544,6 +551,22 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
__clk_hw_register_gate((dev), NULL, (name), NULL, NULL, (parent_data), \
(flags), (reg), (bit_idx), \
(clk_gate_flags), (lock))
+/**
+ * devm_clk_hw_register_gate - register a gate clock with the clock framework
+ * @dev: device that is registering this clock
+ * @name: name of this clock
+ * @parent_name: name of this clock's parent
+ * @flags: framework-specific flags for this clock
+ * @reg: register address to control gating of this clock
+ * @bit_idx: which bit in the register controls gating of this clock
+ * @clk_gate_flags: gate-specific flags for this clock
+ * @lock: shared register lock for this clock
+ */
+#define devm_clk_hw_register_gate(dev, name, parent_name, flags, reg, bit_idx,\
+ clk_gate_flags, lock) \
+ __devm_clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \
+ NULL, (flags), (reg), (bit_idx), \
+ (clk_gate_flags), (lock))
void clk_unregister_gate(struct clk *clk);
void clk_hw_unregister_gate(struct clk_hw *hw);
int clk_gate_is_enabled(struct clk_hw *hw);
@@ -865,7 +888,7 @@ void clk_hw_unregister_divider(struct clk_hw *hw);
struct clk_mux {
struct clk_hw hw;
void __iomem *reg;
- u32 *table;
+ const u32 *table;
u32 mask;
u8 shift;
u8 flags;
@@ -890,18 +913,18 @@ struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np,
const struct clk_hw **parent_hws,
const struct clk_parent_data *parent_data,
unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
- u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+ u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
struct clk_hw *__devm_clk_hw_register_mux(struct device *dev, struct device_node *np,
const char *name, u8 num_parents,
const char * const *parent_names,
const struct clk_hw **parent_hws,
const struct clk_parent_data *parent_data,
unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
- u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+ u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
struct clk *clk_register_mux_table(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
- u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+ u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
#define clk_register_mux(dev, name, parent_names, num_parents, flags, reg, \
shift, width, clk_mux_flags, lock) \
@@ -939,9 +962,9 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
(shift), BIT((width)) - 1, (clk_mux_flags), \
NULL, (lock))
-int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags,
+int clk_mux_val_to_index(struct clk_hw *hw, const u32 *table, unsigned int flags,
unsigned int val);
-unsigned int clk_mux_index_to_val(u32 *table, unsigned int flags, u8 index);
+unsigned int clk_mux_index_to_val(const u32 *table, unsigned int flags, u8 index);
void clk_unregister_mux(struct clk *clk);
void clk_hw_unregister_mux(struct clk_hw *hw);
@@ -980,6 +1003,9 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw);
struct clk_hw *devm_clk_hw_register_fixed_factor(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div);
+struct clk_hw *devm_clk_hw_register_fixed_factor_index(struct device *dev,
+ const char *name, unsigned int index, unsigned long flags,
+ unsigned int mult, unsigned int div);
/**
* struct clk_fractional_divider - adjustable fractional divider clock
*
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 266e8de3cb51..39faa54efe88 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -987,6 +987,17 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
}
/**
+ * clk_drop_range - Reset any range set on that clock
+ * @clk: clock source
+ *
+ * Returns success (0) or negative errno.
+ */
+static inline int clk_drop_range(struct clk *clk)
+{
+ return clk_set_rate_range(clk, 0, ULONG_MAX);
+}
+
+/**
* clk_get_optional - lookup and obtain a reference to an optional clock
* producer.
* @dev: device for clock "consumer"
diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h
index ccb3f034bfa9..3484309b59bf 100644
--- a/include/linux/clk/at91_pmc.h
+++ b/include/linux/clk/at91_pmc.h
@@ -78,6 +78,10 @@
#define AT91_PMC_MAINRDY (1 << 16) /* Main Clock Ready */
#define AT91_CKGR_PLLAR 0x28 /* PLL A Register */
+
+#define AT91_PMC_RATIO 0x2c /* Processor clock ratio register [SAMA7G5 only] */
+#define AT91_PMC_RATIO_RATIO (0xf) /* CPU clock ratio. */
+
#define AT91_CKGR_PLLBR 0x2c /* PLL B Register */
#define AT91_PMC_DIV (0xff << 0) /* Divider */
#define AT91_PMC_PLLCOUNT (0x3f << 8) /* PLL Counter */
diff --git a/include/linux/clk/pxa.h b/include/linux/clk/pxa.h
new file mode 100644
index 000000000000..736b8bb91bd7
--- /dev/null
+++ b/include/linux/clk/pxa.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+extern int pxa25x_clocks_init(void __iomem *regs);
+extern int pxa27x_clocks_init(void __iomem *regs);
+extern int pxa3xx_clocks_init(void __iomem *regs, void __iomem *oscc_reg);
+
+#ifdef CONFIG_PXA3xx
+extern unsigned pxa3xx_get_clk_frequency_khz(int);
+extern void pxa3xx_clk_update_accr(u32 disable, u32 enable, u32 xclkcfg, u32 mask);
+#else
+#define pxa3xx_get_clk_frequency_khz(x) (0)
+#define pxa3xx_clk_update_accr(disable, enable, xclkcfg, mask) do { } while (0)
+#endif
diff --git a/include/linux/clk/sunxi-ng.h b/include/linux/clk/sunxi-ng.h
index 3cd14acde0a1..57c8ec44ab4e 100644
--- a/include/linux/clk/sunxi-ng.h
+++ b/include/linux/clk/sunxi-ng.h
@@ -6,22 +6,9 @@
#ifndef _LINUX_CLK_SUNXI_NG_H_
#define _LINUX_CLK_SUNXI_NG_H_
-#include <linux/errno.h>
-
-#ifdef CONFIG_SUNXI_CCU
int sunxi_ccu_set_mmc_timing_mode(struct clk *clk, bool new_mode);
int sunxi_ccu_get_mmc_timing_mode(struct clk *clk);
-#else
-static inline int sunxi_ccu_set_mmc_timing_mode(struct clk *clk,
- bool new_mode)
-{
- return -ENOTSUPP;
-}
-static inline int sunxi_ccu_get_mmc_timing_mode(struct clk *clk)
-{
- return -ENOTSUPP;
-}
-#endif
+int sun6i_rtc_ccu_probe(struct device *dev, void __iomem *reg);
#endif
diff --git a/include/linux/cma.h b/include/linux/cma.h
index bd801023504b..63873b93deaa 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -12,14 +12,18 @@
*/
#ifdef CONFIG_CMA_AREAS
#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
-
-#else
-#define MAX_CMA_AREAS (0)
-
#endif
#define CMA_MAX_NAME 64
+/*
+ * the buddy -- especially pageblock merging and alloc_contig_range()
+ * -- can deal with only some pageblocks of a higher-order page being
+ * MIGRATE_CMA, we can use pageblock_nr_pages.
+ */
+#define CMA_MIN_ALIGNMENT_PAGES pageblock_nr_pages
+#define CMA_MIN_ALIGNMENT_BYTES (PAGE_SIZE * CMA_MIN_ALIGNMENT_PAGES)
+
struct cma;
extern unsigned long totalcma_pages;
@@ -50,4 +54,6 @@ extern bool cma_pages_valid(struct cma *cma, const struct page *pages, unsigned
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned long count);
extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);
+
+extern void cma_reserve_pages_on_error(struct cma *cma);
#endif
diff --git a/include/linux/comedi/comedi_8254.h b/include/linux/comedi/comedi_8254.h
new file mode 100644
index 000000000000..d8264417e53c
--- /dev/null
+++ b/include/linux/comedi/comedi_8254.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_8254.h
+ * Generic 8254 timer/counter support
+ * Copyright (C) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_8254_H
+#define _COMEDI_8254_H
+
+#include <linux/types.h>
+
+struct comedi_device;
+struct comedi_insn;
+struct comedi_subdevice;
+
+/*
+ * Common oscillator base values in nanoseconds
+ */
+#define I8254_OSC_BASE_10MHZ 100
+#define I8254_OSC_BASE_5MHZ 200
+#define I8254_OSC_BASE_4MHZ 250
+#define I8254_OSC_BASE_2MHZ 500
+#define I8254_OSC_BASE_1MHZ 1000
+#define I8254_OSC_BASE_100KHZ 10000
+#define I8254_OSC_BASE_10KHZ 100000
+#define I8254_OSC_BASE_1KHZ 1000000
+
+/*
+ * I/O access size used to read/write registers
+ */
+#define I8254_IO8 1
+#define I8254_IO16 2
+#define I8254_IO32 4
+
+/*
+ * Register map for generic 8254 timer (I8254_IO8 with 0 regshift)
+ */
+#define I8254_COUNTER0_REG 0x00
+#define I8254_COUNTER1_REG 0x01
+#define I8254_COUNTER2_REG 0x02
+#define I8254_CTRL_REG 0x03
+#define I8254_CTRL_SEL_CTR(x) ((x) << 6)
+#define I8254_CTRL_READBACK(x) (I8254_CTRL_SEL_CTR(3) | BIT(x))
+#define I8254_CTRL_READBACK_COUNT I8254_CTRL_READBACK(4)
+#define I8254_CTRL_READBACK_STATUS I8254_CTRL_READBACK(5)
+#define I8254_CTRL_READBACK_SEL_CTR(x) (2 << (x))
+#define I8254_CTRL_RW(x) (((x) & 0x3) << 4)
+#define I8254_CTRL_LATCH I8254_CTRL_RW(0)
+#define I8254_CTRL_LSB_ONLY I8254_CTRL_RW(1)
+#define I8254_CTRL_MSB_ONLY I8254_CTRL_RW(2)
+#define I8254_CTRL_LSB_MSB I8254_CTRL_RW(3)
+
+/* counter maps zero to 0x10000 */
+#define I8254_MAX_COUNT 0x10000
+
+/**
+ * struct comedi_8254 - private data used by this module
+ * @iobase: PIO base address of the registers (in/out)
+ * @mmio: MMIO base address of the registers (read/write)
+ * @iosize: I/O size used to access the registers (b/w/l)
+ * @regshift: register gap shift
+ * @osc_base: cascaded oscillator speed in ns
+ * @divisor: divisor for single counter
+ * @divisor1: divisor loaded into first cascaded counter
+ * @divisor2: divisor loaded into second cascaded counter
+ * #next_div: next divisor for single counter
+ * @next_div1: next divisor to use for first cascaded counter
+ * @next_div2: next divisor to use for second cascaded counter
+ * @clock_src; current clock source for each counter (driver specific)
+ * @gate_src; current gate source for each counter (driver specific)
+ * @busy: flags used to indicate that a counter is "busy"
+ * @insn_config: driver specific (*insn_config) callback
+ */
+struct comedi_8254 {
+ unsigned long iobase;
+ void __iomem *mmio;
+ unsigned int iosize;
+ unsigned int regshift;
+ unsigned int osc_base;
+ unsigned int divisor;
+ unsigned int divisor1;
+ unsigned int divisor2;
+ unsigned int next_div;
+ unsigned int next_div1;
+ unsigned int next_div2;
+ unsigned int clock_src[3];
+ unsigned int gate_src[3];
+ bool busy[3];
+
+ int (*insn_config)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+};
+
+unsigned int comedi_8254_status(struct comedi_8254 *i8254,
+ unsigned int counter);
+unsigned int comedi_8254_read(struct comedi_8254 *i8254, unsigned int counter);
+void comedi_8254_write(struct comedi_8254 *i8254,
+ unsigned int counter, unsigned int val);
+
+int comedi_8254_set_mode(struct comedi_8254 *i8254,
+ unsigned int counter, unsigned int mode);
+int comedi_8254_load(struct comedi_8254 *i8254,
+ unsigned int counter, unsigned int val, unsigned int mode);
+
+void comedi_8254_pacer_enable(struct comedi_8254 *i8254,
+ unsigned int counter1, unsigned int counter2,
+ bool enable);
+void comedi_8254_update_divisors(struct comedi_8254 *i8254);
+void comedi_8254_cascade_ns_to_timer(struct comedi_8254 *i8254,
+ unsigned int *nanosec, unsigned int flags);
+void comedi_8254_ns_to_timer(struct comedi_8254 *i8254,
+ unsigned int *nanosec, unsigned int flags);
+
+void comedi_8254_set_busy(struct comedi_8254 *i8254,
+ unsigned int counter, bool busy);
+
+void comedi_8254_subdevice_init(struct comedi_subdevice *s,
+ struct comedi_8254 *i8254);
+
+struct comedi_8254 *comedi_8254_init(unsigned long iobase,
+ unsigned int osc_base,
+ unsigned int iosize,
+ unsigned int regshift);
+struct comedi_8254 *comedi_8254_mm_init(void __iomem *mmio,
+ unsigned int osc_base,
+ unsigned int iosize,
+ unsigned int regshift);
+
+#endif /* _COMEDI_8254_H */
diff --git a/include/linux/comedi/comedi_8255.h b/include/linux/comedi/comedi_8255.h
new file mode 100644
index 000000000000..b2a5bc6b3a49
--- /dev/null
+++ b/include/linux/comedi/comedi_8255.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_8255.h
+ * Generic 8255 digital I/O subdevice support
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_8255_H
+#define _COMEDI_8255_H
+
+#define I8255_SIZE 0x04
+
+#define I8255_DATA_A_REG 0x00
+#define I8255_DATA_B_REG 0x01
+#define I8255_DATA_C_REG 0x02
+#define I8255_CTRL_REG 0x03
+#define I8255_CTRL_C_LO_IO BIT(0)
+#define I8255_CTRL_B_IO BIT(1)
+#define I8255_CTRL_B_MODE BIT(2)
+#define I8255_CTRL_C_HI_IO BIT(3)
+#define I8255_CTRL_A_IO BIT(4)
+#define I8255_CTRL_A_MODE(x) ((x) << 5)
+#define I8255_CTRL_CW BIT(7)
+
+struct comedi_device;
+struct comedi_subdevice;
+
+int subdev_8255_init(struct comedi_device *dev, struct comedi_subdevice *s,
+ int (*io)(struct comedi_device *dev, int dir, int port,
+ int data, unsigned long regbase),
+ unsigned long regbase);
+
+int subdev_8255_mm_init(struct comedi_device *dev, struct comedi_subdevice *s,
+ int (*io)(struct comedi_device *dev, int dir, int port,
+ int data, unsigned long regbase),
+ unsigned long regbase);
+
+unsigned long subdev_8255_regbase(struct comedi_subdevice *s);
+
+#endif
diff --git a/include/linux/comedi/comedi_isadma.h b/include/linux/comedi/comedi_isadma.h
new file mode 100644
index 000000000000..9d2b12db7e6e
--- /dev/null
+++ b/include/linux/comedi/comedi_isadma.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * COMEDI ISA DMA support functions
+ * Copyright (c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ */
+
+#ifndef _COMEDI_ISADMA_H
+#define _COMEDI_ISADMA_H
+
+#include <linux/types.h>
+
+struct comedi_device;
+struct device;
+
+/*
+ * These are used to avoid issues when <asm/dma.h> and the DMA_MODE_
+ * defines are not available.
+ */
+#define COMEDI_ISADMA_READ 0
+#define COMEDI_ISADMA_WRITE 1
+
+/**
+ * struct comedi_isadma_desc - cookie for ISA DMA
+ * @virt_addr: virtual address of buffer
+ * @hw_addr: hardware (bus) address of buffer
+ * @chan: DMA channel
+ * @maxsize: allocated size of buffer (in bytes)
+ * @size: transfer size (in bytes)
+ * @mode: DMA_MODE_READ or DMA_MODE_WRITE
+ */
+struct comedi_isadma_desc {
+ void *virt_addr;
+ dma_addr_t hw_addr;
+ unsigned int chan;
+ unsigned int maxsize;
+ unsigned int size;
+ char mode;
+};
+
+/**
+ * struct comedi_isadma - ISA DMA data
+ * @dev: device to allocate non-coherent memory for
+ * @desc: cookie for each DMA buffer
+ * @n_desc: the number of cookies
+ * @cur_dma: the current cookie in use
+ * @chan: the first DMA channel requested
+ * @chan2: the second DMA channel requested
+ */
+struct comedi_isadma {
+ struct device *dev;
+ struct comedi_isadma_desc *desc;
+ int n_desc;
+ int cur_dma;
+ unsigned int chan;
+ unsigned int chan2;
+};
+
+#if IS_ENABLED(CONFIG_ISA_DMA_API)
+
+void comedi_isadma_program(struct comedi_isadma_desc *desc);
+unsigned int comedi_isadma_disable(unsigned int dma_chan);
+unsigned int comedi_isadma_disable_on_sample(unsigned int dma_chan,
+ unsigned int size);
+unsigned int comedi_isadma_poll(struct comedi_isadma *dma);
+void comedi_isadma_set_mode(struct comedi_isadma_desc *desc, char dma_dir);
+
+struct comedi_isadma *comedi_isadma_alloc(struct comedi_device *dev,
+ int n_desc, unsigned int dma_chan1,
+ unsigned int dma_chan2,
+ unsigned int maxsize, char dma_dir);
+void comedi_isadma_free(struct comedi_isadma *dma);
+
+#else /* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+static inline void comedi_isadma_program(struct comedi_isadma_desc *desc)
+{
+}
+
+static inline unsigned int comedi_isadma_disable(unsigned int dma_chan)
+{
+ return 0;
+}
+
+static inline unsigned int
+comedi_isadma_disable_on_sample(unsigned int dma_chan, unsigned int size)
+{
+ return 0;
+}
+
+static inline unsigned int comedi_isadma_poll(struct comedi_isadma *dma)
+{
+ return 0;
+}
+
+static inline void comedi_isadma_set_mode(struct comedi_isadma_desc *desc,
+ char dma_dir)
+{
+}
+
+static inline struct comedi_isadma *
+comedi_isadma_alloc(struct comedi_device *dev, int n_desc,
+ unsigned int dma_chan1, unsigned int dma_chan2,
+ unsigned int maxsize, char dma_dir)
+{
+ return NULL;
+}
+
+static inline void comedi_isadma_free(struct comedi_isadma *dma)
+{
+}
+
+#endif /* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+#endif /* #ifndef _COMEDI_ISADMA_H */
diff --git a/include/linux/comedi/comedi_pci.h b/include/linux/comedi/comedi_pci.h
new file mode 100644
index 000000000000..2fb50663e3ed
--- /dev/null
+++ b/include/linux/comedi/comedi_pci.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pci.h
+ * header file for Comedi PCI drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCI_H
+#define _COMEDI_PCI_H
+
+#include <linux/pci.h>
+#include <linux/comedi/comedidev.h>
+
+/*
+ * PCI Vendor IDs not in <linux/pci_ids.h>
+ */
+#define PCI_VENDOR_ID_KOLTER 0x1001
+#define PCI_VENDOR_ID_ICP 0x104c
+#define PCI_VENDOR_ID_DT 0x1116
+#define PCI_VENDOR_ID_IOTECH 0x1616
+#define PCI_VENDOR_ID_CONTEC 0x1221
+#define PCI_VENDOR_ID_RTD 0x1435
+#define PCI_VENDOR_ID_HUMUSOFT 0x186c
+
+struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev);
+
+int comedi_pci_enable(struct comedi_device *dev);
+void comedi_pci_disable(struct comedi_device *dev);
+void comedi_pci_detach(struct comedi_device *dev);
+
+int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver,
+ unsigned long context);
+void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
+
+int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
+ struct pci_driver *pci_driver);
+void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
+ struct pci_driver *pci_driver);
+
+/**
+ * module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pci_driver: pci_driver struct
+ *
+ * Helper macro for comedi PCI drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \
+ module_driver(__comedi_driver, comedi_pci_driver_register, \
+ comedi_pci_driver_unregister, &(__pci_driver))
+
+#endif /* _COMEDI_PCI_H */
diff --git a/include/linux/comedi/comedi_pcmcia.h b/include/linux/comedi/comedi_pcmcia.h
new file mode 100644
index 000000000000..a33dfb65b869
--- /dev/null
+++ b/include/linux/comedi/comedi_pcmcia.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pcmcia.h
+ * header file for Comedi PCMCIA drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCMCIA_H
+#define _COMEDI_PCMCIA_H
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <linux/comedi/comedidev.h>
+
+struct pcmcia_device *comedi_to_pcmcia_dev(struct comedi_device *dev);
+
+int comedi_pcmcia_enable(struct comedi_device *dev,
+ int (*conf_check)(struct pcmcia_device *p_dev,
+ void *priv_data));
+void comedi_pcmcia_disable(struct comedi_device *dev);
+
+int comedi_pcmcia_auto_config(struct pcmcia_device *link,
+ struct comedi_driver *driver);
+void comedi_pcmcia_auto_unconfig(struct pcmcia_device *link);
+
+int comedi_pcmcia_driver_register(struct comedi_driver *comedi_driver,
+ struct pcmcia_driver *pcmcia_driver);
+void comedi_pcmcia_driver_unregister(struct comedi_driver *comedi_driver,
+ struct pcmcia_driver *pcmcia_driver);
+
+/**
+ * module_comedi_pcmcia_driver() - Helper macro for registering a comedi
+ * PCMCIA driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for comedi PCMCIA drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \
+ module_driver(__comedi_driver, comedi_pcmcia_driver_register, \
+ comedi_pcmcia_driver_unregister, &(__pcmcia_driver))
+
+#endif /* _COMEDI_PCMCIA_H */
diff --git a/include/linux/comedi/comedi_usb.h b/include/linux/comedi/comedi_usb.h
new file mode 100644
index 000000000000..5d17dd425bd2
--- /dev/null
+++ b/include/linux/comedi/comedi_usb.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* comedi_usb.h
+ * header file for USB Comedi drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_USB_H
+#define _COMEDI_USB_H
+
+#include <linux/usb.h>
+#include <linux/comedi/comedidev.h>
+
+struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev);
+struct usb_device *comedi_to_usb_dev(struct comedi_device *dev);
+
+int comedi_usb_auto_config(struct usb_interface *intf,
+ struct comedi_driver *driver, unsigned long context);
+void comedi_usb_auto_unconfig(struct usb_interface *intf);
+
+int comedi_usb_driver_register(struct comedi_driver *comedi_driver,
+ struct usb_driver *usb_driver);
+void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver,
+ struct usb_driver *usb_driver);
+
+/**
+ * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
+ * @__comedi_driver: comedi_driver struct
+ * @__usb_driver: usb_driver struct
+ *
+ * Helper macro for comedi USB drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
+ module_driver(__comedi_driver, comedi_usb_driver_register, \
+ comedi_usb_driver_unregister, &(__usb_driver))
+
+#endif /* _COMEDI_USB_H */
diff --git a/include/linux/comedi/comedidev.h b/include/linux/comedi/comedidev.h
new file mode 100644
index 000000000000..0a1150900ef3
--- /dev/null
+++ b/include/linux/comedi/comedidev.h
@@ -0,0 +1,1053 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedidev.h
+ * header file for kernel-only structures, variables, and constants
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDIDEV_H
+#define _COMEDIDEV_H
+
+#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
+#include <linux/spinlock_types.h>
+#include <linux/rwsem.h>
+#include <linux/kref.h>
+#include <linux/comedi.h>
+
+#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
+#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
+ COMEDI_MINORVERSION, COMEDI_MICROVERSION)
+#define COMEDI_RELEASE VERSION
+
+#define COMEDI_NUM_BOARD_MINORS 0x30
+
+/**
+ * struct comedi_subdevice - Working data for a COMEDI subdevice
+ * @device: COMEDI device to which this subdevice belongs. (Initialized by
+ * comedi_alloc_subdevices().)
+ * @index: Index of this subdevice within device's array of subdevices.
+ * (Initialized by comedi_alloc_subdevices().)
+ * @type: Type of subdevice from &enum comedi_subdevice_type. (Initialized by
+ * the low-level driver.)
+ * @n_chan: Number of channels the subdevice supports. (Initialized by the
+ * low-level driver.)
+ * @subdev_flags: Various "SDF" flags indicating aspects of the subdevice to
+ * the COMEDI core and user application. (Initialized by the low-level
+ * driver.)
+ * @len_chanlist: Maximum length of a channel list if the subdevice supports
+ * asynchronous acquisition commands. (Optionally initialized by the
+ * low-level driver, or changed from 0 to 1 during post-configuration.)
+ * @private: Private data pointer which is either set by the low-level driver
+ * itself, or by a call to comedi_alloc_spriv() which allocates storage.
+ * In the latter case, the storage is automatically freed after the
+ * low-level driver's "detach" handler is called for the device.
+ * (Initialized by the low-level driver.)
+ * @async: Pointer to &struct comedi_async id the subdevice supports
+ * asynchronous acquisition commands. (Allocated and initialized during
+ * post-configuration if needed.)
+ * @lock: Pointer to a file object that performed a %COMEDI_LOCK ioctl on the
+ * subdevice. (Initially NULL.)
+ * @busy: Pointer to a file object that is performing an asynchronous
+ * acquisition command on the subdevice. (Initially NULL.)
+ * @runflags: Internal flags for use by COMEDI core, mostly indicating whether
+ * an asynchronous acquisition command is running.
+ * @spin_lock: Generic spin-lock for use by the COMEDI core and the low-level
+ * driver. (Initialized by comedi_alloc_subdevices().)
+ * @io_bits: Bit-mask indicating the channel directions for a DIO subdevice
+ * with no more than 32 channels. A '1' at a bit position indicates the
+ * corresponding channel is configured as an output. (Initialized by the
+ * low-level driver for a DIO subdevice. Forced to all-outputs during
+ * post-configuration for a digital output subdevice.)
+ * @maxdata: If non-zero, this is the maximum raw data value of each channel.
+ * If zero, the maximum data value is channel-specific. (Initialized by
+ * the low-level driver.)
+ * @maxdata_list: If the maximum data value is channel-specific, this points
+ * to an array of maximum data values indexed by channel index.
+ * (Initialized by the low-level driver.)
+ * @range_table: If non-NULL, this points to a COMEDI range table for the
+ * subdevice. If NULL, the range table is channel-specific. (Initialized
+ * by the low-level driver, will be set to an "invalid" range table during
+ * post-configuration if @range_table and @range_table_list are both
+ * NULL.)
+ * @range_table_list: If the COMEDI range table is channel-specific, this
+ * points to an array of pointers to COMEDI range tables indexed by
+ * channel number. (Initialized by the low-level driver.)
+ * @chanlist: Not used.
+ * @insn_read: Optional pointer to a handler for the %INSN_READ instruction.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_write: Optional pointer to a handler for the %INSN_WRITE instruction.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_bits: Optional pointer to a handler for the %INSN_BITS instruction
+ * for a digital input, digital output or digital input/output subdevice.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_config: Optional pointer to a handler for the %INSN_CONFIG
+ * instruction. (Initialized by the low-level driver, or set to a default
+ * handler during post-configuration.)
+ * @do_cmd: If the subdevice supports asynchronous acquisition commands, this
+ * points to a handler to set it up in hardware. (Initialized by the
+ * low-level driver.)
+ * @do_cmdtest: If the subdevice supports asynchronous acquisition commands,
+ * this points to a handler used to check and possibly tweak a prospective
+ * acquisition command without setting it up in hardware. (Initialized by
+ * the low-level driver.)
+ * @poll: If the subdevice supports asynchronous acquisition commands, this
+ * is an optional pointer to a handler for the %COMEDI_POLL ioctl which
+ * instructs the low-level driver to synchronize buffers. (Initialized by
+ * the low-level driver if needed.)
+ * @cancel: If the subdevice supports asynchronous acquisition commands, this
+ * points to a handler used to terminate a running command. (Initialized
+ * by the low-level driver.)
+ * @buf_change: If the subdevice supports asynchronous acquisition commands,
+ * this is an optional pointer to a handler that is called when the data
+ * buffer for handling asynchronous commands is allocated or reallocated.
+ * (Initialized by the low-level driver if needed.)
+ * @munge: If the subdevice supports asynchronous acquisition commands and
+ * uses DMA to transfer data from the hardware to the acquisition buffer,
+ * this points to a function used to "munge" the data values from the
+ * hardware into the format expected by COMEDI. (Initialized by the
+ * low-level driver if needed.)
+ * @async_dma_dir: If the subdevice supports asynchronous acquisition commands
+ * and uses DMA to transfer data from the hardware to the acquisition
+ * buffer, this sets the DMA direction for the buffer. (initialized to
+ * %DMA_NONE by comedi_alloc_subdevices() and changed by the low-level
+ * driver if necessary.)
+ * @state: Handy bit-mask indicating the output states for a DIO or digital
+ * output subdevice with no more than 32 channels. (Initialized by the
+ * low-level driver.)
+ * @class_dev: If the subdevice supports asynchronous acquisition commands,
+ * this points to a sysfs comediX_subdY device where X is the minor device
+ * number of the COMEDI device and Y is the subdevice number. The minor
+ * device number for the sysfs device is allocated dynamically in the
+ * range 48 to 255. This is used to allow the COMEDI device to be opened
+ * with a different default read or write subdevice. (Allocated during
+ * post-configuration if needed.)
+ * @minor: If @class_dev is set, this is its dynamically allocated minor
+ * device number. (Set during post-configuration if necessary.)
+ * @readback: Optional pointer to memory allocated by
+ * comedi_alloc_subdev_readback() used to hold the values written to
+ * analog output channels so they can be read back. The storage is
+ * automatically freed after the low-level driver's "detach" handler is
+ * called for the device. (Initialized by the low-level driver.)
+ *
+ * This is the main control structure for a COMEDI subdevice. If the subdevice
+ * supports asynchronous acquisition commands, additional information is stored
+ * in the &struct comedi_async pointed to by @async.
+ *
+ * Most of the subdevice is initialized by the low-level driver's "attach" or
+ * "auto_attach" handlers but parts of it are initialized by
+ * comedi_alloc_subdevices(), and other parts are initialized during
+ * post-configuration on return from that handler.
+ *
+ * A low-level driver that sets @insn_bits for a digital input, digital output,
+ * or DIO subdevice may leave @insn_read and @insn_write uninitialized, in
+ * which case they will be set to a default handler during post-configuration
+ * that uses @insn_bits to emulate the %INSN_READ and %INSN_WRITE instructions.
+ */
+struct comedi_subdevice {
+ struct comedi_device *device;
+ int index;
+ int type;
+ int n_chan;
+ int subdev_flags;
+ int len_chanlist; /* maximum length of channel/gain list */
+
+ void *private;
+
+ struct comedi_async *async;
+
+ void *lock;
+ void *busy;
+ unsigned int runflags;
+ spinlock_t spin_lock; /* generic spin-lock for COMEDI and drivers */
+
+ unsigned int io_bits;
+
+ unsigned int maxdata; /* if maxdata==0, use list */
+ const unsigned int *maxdata_list; /* list is channel specific */
+
+ const struct comedi_lrange *range_table;
+ const struct comedi_lrange *const *range_table_list;
+
+ unsigned int *chanlist; /* driver-owned chanlist (not used) */
+
+ int (*insn_read)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_write)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_bits)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_config)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data);
+
+ int (*do_cmd)(struct comedi_device *dev, struct comedi_subdevice *s);
+ int (*do_cmdtest)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd);
+ int (*poll)(struct comedi_device *dev, struct comedi_subdevice *s);
+ int (*cancel)(struct comedi_device *dev, struct comedi_subdevice *s);
+
+ /* called when the buffer changes */
+ int (*buf_change)(struct comedi_device *dev,
+ struct comedi_subdevice *s);
+
+ void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s,
+ void *data, unsigned int num_bytes,
+ unsigned int start_chan_index);
+ enum dma_data_direction async_dma_dir;
+
+ unsigned int state;
+
+ struct device *class_dev;
+ int minor;
+
+ unsigned int *readback;
+};
+
+/**
+ * struct comedi_buf_page - Describe a page of a COMEDI buffer
+ * @virt_addr: Kernel address of page.
+ * @dma_addr: DMA address of page if in DMA coherent memory.
+ */
+struct comedi_buf_page {
+ void *virt_addr;
+ dma_addr_t dma_addr;
+};
+
+/**
+ * struct comedi_buf_map - Describe pages in a COMEDI buffer
+ * @dma_hw_dev: Low-level hardware &struct device pointer copied from the
+ * COMEDI device's hw_dev member.
+ * @page_list: Pointer to array of &struct comedi_buf_page, one for each
+ * page in the buffer.
+ * @n_pages: Number of pages in the buffer.
+ * @dma_dir: DMA direction used to allocate pages of DMA coherent memory,
+ * or %DMA_NONE if pages allocated from regular memory.
+ * @refcount: &struct kref reference counter used to free the buffer.
+ *
+ * A COMEDI data buffer is allocated as individual pages, either in
+ * conventional memory or DMA coherent memory, depending on the attached,
+ * low-level hardware device. (The buffer pages also get mapped into the
+ * kernel's contiguous virtual address space pointed to by the 'prealloc_buf'
+ * member of &struct comedi_async.)
+ *
+ * The buffer is normally freed when the COMEDI device is detached from the
+ * low-level driver (which may happen due to device removal), but if it happens
+ * to be mmapped at the time, the pages cannot be freed until the buffer has
+ * been munmapped. That is what the reference counter is for. (The virtual
+ * address space pointed by 'prealloc_buf' is freed when the COMEDI device is
+ * detached.)
+ */
+struct comedi_buf_map {
+ struct device *dma_hw_dev;
+ struct comedi_buf_page *page_list;
+ unsigned int n_pages;
+ enum dma_data_direction dma_dir;
+ struct kref refcount;
+};
+
+/**
+ * struct comedi_async - Control data for asynchronous COMEDI commands
+ * @prealloc_buf: Kernel virtual address of allocated acquisition buffer.
+ * @prealloc_bufsz: Buffer size (in bytes).
+ * @buf_map: Map of buffer pages.
+ * @max_bufsize: Maximum allowed buffer size (in bytes).
+ * @buf_write_count: "Write completed" count (in bytes, modulo 2**32).
+ * @buf_write_alloc_count: "Allocated for writing" count (in bytes,
+ * modulo 2**32).
+ * @buf_read_count: "Read completed" count (in bytes, modulo 2**32).
+ * @buf_read_alloc_count: "Allocated for reading" count (in bytes,
+ * modulo 2**32).
+ * @buf_write_ptr: Buffer position for writer.
+ * @buf_read_ptr: Buffer position for reader.
+ * @cur_chan: Current position in chanlist for scan (for those drivers that
+ * use it).
+ * @scans_done: The number of scans completed.
+ * @scan_progress: Amount received or sent for current scan (in bytes).
+ * @munge_chan: Current position in chanlist for "munging".
+ * @munge_count: "Munge" count (in bytes, modulo 2**32).
+ * @munge_ptr: Buffer position for "munging".
+ * @events: Bit-vector of events that have occurred.
+ * @cmd: Details of comedi command in progress.
+ * @wait_head: Task wait queue for file reader or writer.
+ * @cb_mask: Bit-vector of events that should wake waiting tasks.
+ * @inttrig: Software trigger function for command, or NULL.
+ *
+ * Note about the ..._count and ..._ptr members:
+ *
+ * Think of the _Count values being integers of unlimited size, indexing
+ * into a buffer of infinite length (though only an advancing portion
+ * of the buffer of fixed length prealloc_bufsz is accessible at any
+ * time). Then:
+ *
+ * Buf_Read_Count <= Buf_Read_Alloc_Count <= Munge_Count <=
+ * Buf_Write_Count <= Buf_Write_Alloc_Count <=
+ * (Buf_Read_Count + prealloc_bufsz)
+ *
+ * (Those aren't the actual members, apart from prealloc_bufsz.) When the
+ * buffer is reset, those _Count values start at 0 and only increase in value,
+ * maintaining the above inequalities until the next time the buffer is
+ * reset. The buffer is divided into the following regions by the inequalities:
+ *
+ * [0, Buf_Read_Count):
+ * old region no longer accessible
+ *
+ * [Buf_Read_Count, Buf_Read_Alloc_Count):
+ * filled and munged region allocated for reading but not yet read
+ *
+ * [Buf_Read_Alloc_Count, Munge_Count):
+ * filled and munged region not yet allocated for reading
+ *
+ * [Munge_Count, Buf_Write_Count):
+ * filled region not yet munged
+ *
+ * [Buf_Write_Count, Buf_Write_Alloc_Count):
+ * unfilled region allocated for writing but not yet written
+ *
+ * [Buf_Write_Alloc_Count, Buf_Read_Count + prealloc_bufsz):
+ * unfilled region not yet allocated for writing
+ *
+ * [Buf_Read_Count + prealloc_bufsz, infinity):
+ * unfilled region not yet accessible
+ *
+ * Data needs to be written into the buffer before it can be read out,
+ * and may need to be converted (or "munged") between the two
+ * operations. Extra unfilled buffer space may need to allocated for
+ * writing (advancing Buf_Write_Alloc_Count) before new data is written.
+ * After writing new data, the newly filled space needs to be released
+ * (advancing Buf_Write_Count). This also results in the new data being
+ * "munged" (advancing Munge_Count). Before data is read out of the
+ * buffer, extra space may need to be allocated for reading (advancing
+ * Buf_Read_Alloc_Count). After the data has been read out, the space
+ * needs to be released (advancing Buf_Read_Count).
+ *
+ * The actual members, buf_read_count, buf_read_alloc_count,
+ * munge_count, buf_write_count, and buf_write_alloc_count take the
+ * value of the corresponding capitalized _Count values modulo 2^32
+ * (UINT_MAX+1). Subtracting a "higher" _count value from a "lower"
+ * _count value gives the same answer as subtracting a "higher" _Count
+ * value from a lower _Count value because prealloc_bufsz < UINT_MAX+1.
+ * The modulo operation is done implicitly.
+ *
+ * The buf_read_ptr, munge_ptr, and buf_write_ptr members take the value
+ * of the corresponding capitalized _Count values modulo prealloc_bufsz.
+ * These correspond to byte indices in the physical buffer. The modulo
+ * operation is done by subtracting prealloc_bufsz when the value
+ * exceeds prealloc_bufsz (assuming prealloc_bufsz plus the increment is
+ * less than or equal to UINT_MAX).
+ */
+struct comedi_async {
+ void *prealloc_buf;
+ unsigned int prealloc_bufsz;
+ struct comedi_buf_map *buf_map;
+ unsigned int max_bufsize;
+ unsigned int buf_write_count;
+ unsigned int buf_write_alloc_count;
+ unsigned int buf_read_count;
+ unsigned int buf_read_alloc_count;
+ unsigned int buf_write_ptr;
+ unsigned int buf_read_ptr;
+ unsigned int cur_chan;
+ unsigned int scans_done;
+ unsigned int scan_progress;
+ unsigned int munge_chan;
+ unsigned int munge_count;
+ unsigned int munge_ptr;
+ unsigned int events;
+ struct comedi_cmd cmd;
+ wait_queue_head_t wait_head;
+ unsigned int cb_mask;
+ int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s,
+ unsigned int x);
+};
+
+/**
+ * enum comedi_cb - &struct comedi_async callback "events"
+ * @COMEDI_CB_EOS: end-of-scan
+ * @COMEDI_CB_EOA: end-of-acquisition/output
+ * @COMEDI_CB_BLOCK: data has arrived, wakes up read() / write()
+ * @COMEDI_CB_EOBUF: DEPRECATED: end of buffer
+ * @COMEDI_CB_ERROR: card error during acquisition
+ * @COMEDI_CB_OVERFLOW: buffer overflow/underflow
+ * @COMEDI_CB_ERROR_MASK: events that indicate an error has occurred
+ * @COMEDI_CB_CANCEL_MASK: events that will cancel an async command
+ */
+enum comedi_cb {
+ COMEDI_CB_EOS = BIT(0),
+ COMEDI_CB_EOA = BIT(1),
+ COMEDI_CB_BLOCK = BIT(2),
+ COMEDI_CB_EOBUF = BIT(3),
+ COMEDI_CB_ERROR = BIT(4),
+ COMEDI_CB_OVERFLOW = BIT(5),
+ /* masks */
+ COMEDI_CB_ERROR_MASK = (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW),
+ COMEDI_CB_CANCEL_MASK = (COMEDI_CB_EOA | COMEDI_CB_ERROR_MASK)
+};
+
+/**
+ * struct comedi_driver - COMEDI driver registration
+ * @driver_name: Name of driver.
+ * @module: Owning module.
+ * @attach: The optional "attach" handler for manually configured COMEDI
+ * devices.
+ * @detach: The "detach" handler for deconfiguring COMEDI devices.
+ * @auto_attach: The optional "auto_attach" handler for automatically
+ * configured COMEDI devices.
+ * @num_names: Optional number of "board names" supported.
+ * @board_name: Optional pointer to a pointer to a board name. The pointer
+ * to a board name is embedded in an element of a driver-defined array
+ * of static, read-only board type information.
+ * @offset: Optional size of each element of the driver-defined array of
+ * static, read-only board type information, i.e. the offset between each
+ * pointer to a board name.
+ *
+ * This is used with comedi_driver_register() and comedi_driver_unregister() to
+ * register and unregister a low-level COMEDI driver with the COMEDI core.
+ *
+ * If @num_names is non-zero, @board_name should be non-NULL, and @offset
+ * should be at least sizeof(*board_name). These are used by the handler for
+ * the %COMEDI_DEVCONFIG ioctl to match a hardware device and its driver by
+ * board name. If @num_names is zero, the %COMEDI_DEVCONFIG ioctl matches a
+ * hardware device and its driver by driver name. This is only useful if the
+ * @attach handler is set. If @num_names is non-zero, the driver's @attach
+ * handler will be called with the COMEDI device structure's board_ptr member
+ * pointing to the matched pointer to a board name within the driver's private
+ * array of static, read-only board type information.
+ *
+ * The @detach handler has two roles. If a COMEDI device was successfully
+ * configured by the @attach or @auto_attach handler, it is called when the
+ * device is being deconfigured (by the %COMEDI_DEVCONFIG ioctl, or due to
+ * unloading of the driver, or due to device removal). It is also called when
+ * the @attach or @auto_attach handler returns an error. Therefore, the
+ * @attach or @auto_attach handlers can defer clean-up on error until the
+ * @detach handler is called. If the @attach or @auto_attach handlers free
+ * any resources themselves, they must prevent the @detach handler from
+ * freeing the same resources. The @detach handler must not assume that all
+ * resources requested by the @attach or @auto_attach handler were
+ * successfully allocated.
+ */
+struct comedi_driver {
+ /* private: */
+ struct comedi_driver *next; /* Next in list of COMEDI drivers. */
+ /* public: */
+ const char *driver_name;
+ struct module *module;
+ int (*attach)(struct comedi_device *dev, struct comedi_devconfig *it);
+ void (*detach)(struct comedi_device *dev);
+ int (*auto_attach)(struct comedi_device *dev, unsigned long context);
+ unsigned int num_names;
+ const char *const *board_name;
+ int offset;
+};
+
+/**
+ * struct comedi_device - Working data for a COMEDI device
+ * @use_count: Number of open file objects.
+ * @driver: Low-level COMEDI driver attached to this COMEDI device.
+ * @pacer: Optional pointer to a dynamically allocated acquisition pacer
+ * control. It is freed automatically after the COMEDI device is
+ * detached from the low-level driver.
+ * @private: Optional pointer to private data allocated by the low-level
+ * driver. It is freed automatically after the COMEDI device is
+ * detached from the low-level driver.
+ * @class_dev: Sysfs comediX device.
+ * @minor: Minor device number of COMEDI char device (0-47).
+ * @detach_count: Counter incremented every time the COMEDI device is detached.
+ * Used for checking a previous attachment is still valid.
+ * @hw_dev: Optional pointer to the low-level hardware &struct device. It is
+ * required for automatically configured COMEDI devices and optional for
+ * COMEDI devices configured by the %COMEDI_DEVCONFIG ioctl, although
+ * the bus-specific COMEDI functions only work if it is set correctly.
+ * It is also passed to dma_alloc_coherent() for COMEDI subdevices that
+ * have their 'async_dma_dir' member set to something other than
+ * %DMA_NONE.
+ * @board_name: Pointer to a COMEDI board name or a COMEDI driver name. When
+ * the low-level driver's "attach" handler is called by the handler for
+ * the %COMEDI_DEVCONFIG ioctl, it either points to a matched board name
+ * string if the 'num_names' member of the &struct comedi_driver is
+ * non-zero, otherwise it points to the low-level driver name string.
+ * When the low-lever driver's "auto_attach" handler is called for an
+ * automatically configured COMEDI device, it points to the low-level
+ * driver name string. The low-level driver is free to change it in its
+ * "attach" or "auto_attach" handler if it wishes.
+ * @board_ptr: Optional pointer to private, read-only board type information in
+ * the low-level driver. If the 'num_names' member of the &struct
+ * comedi_driver is non-zero, the handler for the %COMEDI_DEVCONFIG ioctl
+ * will point it to a pointer to a matched board name string within the
+ * driver's private array of static, read-only board type information when
+ * calling the driver's "attach" handler. The low-level driver is free to
+ * change it.
+ * @attached: Flag indicating that the COMEDI device is attached to a low-level
+ * driver.
+ * @ioenabled: Flag used to indicate that a PCI device has been enabled and
+ * its regions requested.
+ * @spinlock: Generic spin-lock for use by the low-level driver.
+ * @mutex: Generic mutex for use by the COMEDI core module.
+ * @attach_lock: &struct rw_semaphore used to guard against the COMEDI device
+ * being detached while an operation is in progress. The down_write()
+ * operation is only allowed while @mutex is held and is used when
+ * changing @attached and @detach_count and calling the low-level driver's
+ * "detach" handler. The down_read() operation is generally used without
+ * holding @mutex.
+ * @refcount: &struct kref reference counter for freeing COMEDI device.
+ * @n_subdevices: Number of COMEDI subdevices allocated by the low-level
+ * driver for this device.
+ * @subdevices: Dynamically allocated array of COMEDI subdevices.
+ * @mmio: Optional pointer to a remapped MMIO region set by the low-level
+ * driver.
+ * @iobase: Optional base of an I/O port region requested by the low-level
+ * driver.
+ * @iolen: Length of I/O port region requested at @iobase.
+ * @irq: Optional IRQ number requested by the low-level driver.
+ * @read_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ * the read() file operation. Set by the low-level driver.
+ * @write_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ * the write() file operation. Set by the low-level driver.
+ * @async_queue: Storage for fasync_helper().
+ * @open: Optional pointer to a function set by the low-level driver to be
+ * called when @use_count changes from 0 to 1.
+ * @close: Optional pointer to a function set by the low-level driver to be
+ * called when @use_count changed from 1 to 0.
+ * @insn_device_config: Optional pointer to a handler for all sub-instructions
+ * except %INSN_DEVICE_CONFIG_GET_ROUTES of the %INSN_DEVICE_CONFIG
+ * instruction. If this is not initialized by the low-level driver, a
+ * default handler will be set during post-configuration.
+ * @get_valid_routes: Optional pointer to a handler for the
+ * %INSN_DEVICE_CONFIG_GET_ROUTES sub-instruction of the
+ * %INSN_DEVICE_CONFIG instruction set. If this is not initialized by the
+ * low-level driver, a default handler that copies zero routes back to the
+ * user will be used.
+ *
+ * This is the main control data structure for a COMEDI device (as far as the
+ * COMEDI core is concerned). There are two groups of COMEDI devices -
+ * "legacy" devices that are configured by the handler for the
+ * %COMEDI_DEVCONFIG ioctl, and automatically configured devices resulting
+ * from a call to comedi_auto_config() as a result of a bus driver probe in
+ * a low-level COMEDI driver. The "legacy" COMEDI devices are allocated
+ * during module initialization if the "comedi_num_legacy_minors" module
+ * parameter is non-zero and use minor device numbers from 0 to
+ * comedi_num_legacy_minors minus one. The automatically configured COMEDI
+ * devices are allocated on demand and use minor device numbers from
+ * comedi_num_legacy_minors to 47.
+ */
+struct comedi_device {
+ int use_count;
+ struct comedi_driver *driver;
+ struct comedi_8254 *pacer;
+ void *private;
+
+ struct device *class_dev;
+ int minor;
+ unsigned int detach_count;
+ struct device *hw_dev;
+
+ const char *board_name;
+ const void *board_ptr;
+ unsigned int attached:1;
+ unsigned int ioenabled:1;
+ spinlock_t spinlock; /* generic spin-lock for low-level driver */
+ struct mutex mutex; /* generic mutex for COMEDI core */
+ struct rw_semaphore attach_lock;
+ struct kref refcount;
+
+ int n_subdevices;
+ struct comedi_subdevice *subdevices;
+
+ /* dumb */
+ void __iomem *mmio;
+ unsigned long iobase;
+ unsigned long iolen;
+ unsigned int irq;
+
+ struct comedi_subdevice *read_subdev;
+ struct comedi_subdevice *write_subdev;
+
+ struct fasync_struct *async_queue;
+
+ int (*open)(struct comedi_device *dev);
+ void (*close)(struct comedi_device *dev);
+ int (*insn_device_config)(struct comedi_device *dev,
+ struct comedi_insn *insn, unsigned int *data);
+ unsigned int (*get_valid_routes)(struct comedi_device *dev,
+ unsigned int n_pairs,
+ unsigned int *pair_data);
+};
+
+/*
+ * function prototypes
+ */
+
+void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
+
+struct comedi_device *comedi_dev_get_from_minor(unsigned int minor);
+int comedi_dev_put(struct comedi_device *dev);
+
+bool comedi_is_subdevice_running(struct comedi_subdevice *s);
+
+void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size);
+void comedi_set_spriv_auto_free(struct comedi_subdevice *s);
+
+int comedi_check_chanlist(struct comedi_subdevice *s,
+ int n,
+ unsigned int *chanlist);
+
+/* range stuff */
+
+#define RANGE(a, b) {(a) * 1e6, (b) * 1e6, 0}
+#define RANGE_ext(a, b) {(a) * 1e6, (b) * 1e6, RF_EXTERNAL}
+#define RANGE_mA(a, b) {(a) * 1e6, (b) * 1e6, UNIT_mA}
+#define RANGE_unitless(a, b) {(a) * 1e6, (b) * 1e6, 0}
+#define BIP_RANGE(a) {-(a) * 1e6, (a) * 1e6, 0}
+#define UNI_RANGE(a) {0, (a) * 1e6, 0}
+
+extern const struct comedi_lrange range_bipolar10;
+extern const struct comedi_lrange range_bipolar5;
+extern const struct comedi_lrange range_bipolar2_5;
+extern const struct comedi_lrange range_unipolar10;
+extern const struct comedi_lrange range_unipolar5;
+extern const struct comedi_lrange range_unipolar2_5;
+extern const struct comedi_lrange range_0_20mA;
+extern const struct comedi_lrange range_4_20mA;
+extern const struct comedi_lrange range_0_32mA;
+extern const struct comedi_lrange range_unknown;
+
+#define range_digital range_unipolar5
+
+/**
+ * struct comedi_lrange - Describes a COMEDI range table
+ * @length: Number of entries in the range table.
+ * @range: Array of &struct comedi_krange, one for each range.
+ *
+ * Each element of @range[] describes the minimum and maximum physical range
+ * and the type of units. Typically, the type of unit is %UNIT_volt
+ * (i.e. volts) and the minimum and maximum are in millionths of a volt.
+ * There may also be a flag that indicates the minimum and maximum are merely
+ * scale factors for an unknown, external reference.
+ */
+struct comedi_lrange {
+ int length;
+ struct comedi_krange range[];
+};
+
+/**
+ * comedi_range_is_bipolar() - Test if subdevice range is bipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return s->range_table->range[range].min < 0;
+}
+
+/**
+ * comedi_range_is_unipolar() - Test if subdevice range is unipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is unipolar.
+ * %false if the range is bipolar.
+ */
+static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return s->range_table->range[range].min >= 0;
+}
+
+/**
+ * comedi_range_is_external() - Test if subdevice range is external
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is external.
+ * %false if the range is internal.
+ */
+static inline bool comedi_range_is_external(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return !!(s->range_table->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_chan_range_is_bipolar() - Test if channel-specific range is bipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return s->range_table_list[chan]->range[range].min < 0;
+}
+
+/**
+ * comedi_chan_range_is_unipolar() - Test if channel-specific range is unipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is unipolar.
+ * %false if the range is bipolar.
+ */
+static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return s->range_table_list[chan]->range[range].min >= 0;
+}
+
+/**
+ * comedi_chan_range_is_external() - Test if channel-specific range is external
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_external(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return !!(s->range_table_list[chan]->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_offset_munge() - Convert between offset binary and 2's complement
+ * @s: COMEDI subdevice.
+ * @val: Value to be converted.
+ *
+ * Toggles the highest bit of a sample value to toggle between offset binary
+ * and 2's complement. Assumes that @s->maxdata is a power of 2 minus 1.
+ *
+ * Return: The converted value.
+ */
+static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s,
+ unsigned int val)
+{
+ return val ^ s->maxdata ^ (s->maxdata >> 1);
+}
+
+/**
+ * comedi_bytes_per_sample() - Determine subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not.
+ *
+ * Return: The subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_per_sample(struct comedi_subdevice *s)
+{
+ return s->subdev_flags & SDF_LSAMPL ? sizeof(int) : sizeof(short);
+}
+
+/**
+ * comedi_sample_shift() - Determine log2 of subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not. The log2 of the
+ * sample size will be 2 or 1 and can be used as the right operand of a
+ * bit-shift operator to multiply or divide something by the sample size.
+ *
+ * Return: log2 of the subdevice sample size.
+ */
+static inline unsigned int comedi_sample_shift(struct comedi_subdevice *s)
+{
+ return s->subdev_flags & SDF_LSAMPL ? 2 : 1;
+}
+
+/**
+ * comedi_bytes_to_samples() - Convert a number of bytes to a number of samples
+ * @s: COMEDI subdevice.
+ * @nbytes: Number of bytes
+ *
+ * Return: The number of bytes divided by the subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_to_samples(struct comedi_subdevice *s,
+ unsigned int nbytes)
+{
+ return nbytes >> comedi_sample_shift(s);
+}
+
+/**
+ * comedi_samples_to_bytes() - Convert a number of samples to a number of bytes
+ * @s: COMEDI subdevice.
+ * @nsamples: Number of samples.
+ *
+ * Return: The number of samples multiplied by the subdevice sample size.
+ * (Does not check for arithmetic overflow.)
+ */
+static inline unsigned int comedi_samples_to_bytes(struct comedi_subdevice *s,
+ unsigned int nsamples)
+{
+ return nsamples << comedi_sample_shift(s);
+}
+
+/**
+ * comedi_check_trigger_src() - Trivially validate a comedi_cmd trigger source
+ * @src: Pointer to the trigger source to validate.
+ * @flags: Bitmask of valid %TRIG_* for the trigger.
+ *
+ * This is used in "step 1" of the do_cmdtest functions of comedi drivers
+ * to validate the comedi_cmd triggers. The mask of the @src against the
+ * @flags allows the userspace comedilib to pass all the comedi_cmd
+ * triggers as %TRIG_ANY and get back a bitmask of the valid trigger sources.
+ *
+ * Return:
+ * 0 if trigger sources in *@src are all supported.
+ * -EINVAL if any trigger source in *@src is unsupported.
+ */
+static inline int comedi_check_trigger_src(unsigned int *src,
+ unsigned int flags)
+{
+ unsigned int orig_src = *src;
+
+ *src = orig_src & flags;
+ if (*src == TRIG_INVALID || *src != orig_src)
+ return -EINVAL;
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_is_unique() - Make sure a trigger source is unique
+ * @src: The trigger source to check.
+ *
+ * Return:
+ * 0 if no more than one trigger source is set.
+ * -EINVAL if more than one trigger source is set.
+ */
+static inline int comedi_check_trigger_is_unique(unsigned int src)
+{
+ /* this test is true if more than one _src bit is set */
+ if ((src & (src - 1)) != 0)
+ return -EINVAL;
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_is() - Trivially validate a trigger argument
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The value the argument should be.
+ *
+ * Forces *@arg to be @val.
+ *
+ * Return:
+ * 0 if *@arg was already @val.
+ * -EINVAL if *@arg differed from @val.
+ */
+static inline int comedi_check_trigger_arg_is(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg != val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_min() - Trivially validate a trigger argument min
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The minimum value the argument should be.
+ *
+ * Forces *@arg to be at least @val, setting it to @val if necessary.
+ *
+ * Return:
+ * 0 if *@arg was already at least @val.
+ * -EINVAL if *@arg was less than @val.
+ */
+static inline int comedi_check_trigger_arg_min(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg < val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_max() - Trivially validate a trigger argument max
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The maximum value the argument should be.
+ *
+ * Forces *@arg to be no more than @val, setting it to @val if necessary.
+ *
+ * Return:
+ * 0 if*@arg was already no more than @val.
+ * -EINVAL if *@arg was greater than @val.
+ */
+static inline int comedi_check_trigger_arg_max(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg > val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * Must set dev->hw_dev if you wish to dma directly into comedi's buffer.
+ * Also useful for retrieving a previously configured hardware device of
+ * known bus type. Set automatically for auto-configured devices.
+ * Automatically set to NULL when detaching hardware device.
+ */
+int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev);
+
+/**
+ * comedi_buf_n_bytes_ready - Determine amount of unread data in buffer
+ * @s: COMEDI subdevice.
+ *
+ * Determines the number of bytes of unread data in the asynchronous
+ * acquisition data buffer for a subdevice. The data in question might not
+ * have been fully "munged" yet.
+ *
+ * Returns: The amount of unread data in bytes.
+ */
+static inline unsigned int comedi_buf_n_bytes_ready(struct comedi_subdevice *s)
+{
+ return s->async->buf_write_count - s->async->buf_read_count;
+}
+
+unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s);
+unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_write_samples(struct comedi_subdevice *s,
+ const void *data, unsigned int nsamples);
+unsigned int comedi_buf_read_samples(struct comedi_subdevice *s,
+ void *data, unsigned int nsamples);
+
+/* drivers.c - general comedi driver functions */
+
+#define COMEDI_TIMEOUT_MS 1000
+
+int comedi_timeout(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ int (*cb)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned long context),
+ unsigned long context);
+
+unsigned int comedi_handle_events(struct comedi_device *dev,
+ struct comedi_subdevice *s);
+
+int comedi_dio_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data,
+ unsigned int mask);
+unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
+ unsigned int *data);
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+ struct comedi_cmd *cmd);
+unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
+unsigned int comedi_nscans_left(struct comedi_subdevice *s,
+ unsigned int nscans);
+unsigned int comedi_nsamples_left(struct comedi_subdevice *s,
+ unsigned int nsamples);
+void comedi_inc_scan_progress(struct comedi_subdevice *s,
+ unsigned int num_bytes);
+
+void *comedi_alloc_devpriv(struct comedi_device *dev, size_t size);
+int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices);
+int comedi_alloc_subdev_readback(struct comedi_subdevice *s);
+
+int comedi_readback_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+
+int comedi_load_firmware(struct comedi_device *dev, struct device *hw_dev,
+ const char *name,
+ int (*cb)(struct comedi_device *dev,
+ const u8 *data, size_t size,
+ unsigned long context),
+ unsigned long context);
+
+int __comedi_request_region(struct comedi_device *dev,
+ unsigned long start, unsigned long len);
+int comedi_request_region(struct comedi_device *dev,
+ unsigned long start, unsigned long len);
+void comedi_legacy_detach(struct comedi_device *dev);
+
+int comedi_auto_config(struct device *hardware_device,
+ struct comedi_driver *driver, unsigned long context);
+void comedi_auto_unconfig(struct device *hardware_device);
+
+int comedi_driver_register(struct comedi_driver *driver);
+void comedi_driver_unregister(struct comedi_driver *driver);
+
+/**
+ * module_comedi_driver() - Helper macro for registering a comedi driver
+ * @__comedi_driver: comedi_driver struct
+ *
+ * Helper macro for comedi drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only use
+ * this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_comedi_driver(__comedi_driver) \
+ module_driver(__comedi_driver, comedi_driver_register, \
+ comedi_driver_unregister)
+
+#endif /* _COMEDIDEV_H */
diff --git a/include/linux/comedi/comedilib.h b/include/linux/comedi/comedilib.h
new file mode 100644
index 000000000000..0223c9cd9215
--- /dev/null
+++ b/include/linux/comedi/comedilib.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedilib.h
+ * Header file for kcomedilib
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _LINUX_COMEDILIB_H
+#define _LINUX_COMEDILIB_H
+
+struct comedi_device *comedi_open(const char *path);
+int comedi_close(struct comedi_device *dev);
+int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
+ unsigned int chan, unsigned int *io);
+int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
+ unsigned int chan, unsigned int io);
+int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
+ unsigned int mask, unsigned int *bits,
+ unsigned int base_channel);
+int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
+ unsigned int subd);
+int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);
+
+#endif
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 34bce35c808d..52a9ff65faee 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -177,7 +177,7 @@ static inline bool compaction_withdrawn(enum compact_result result)
bool compaction_zonelist_suitable(struct alloc_context *ac, int order,
int alloc_flags);
-extern int kcompactd_run(int nid);
+extern void kcompactd_run(int nid);
extern void kcompactd_stop(int nid);
extern void wakeup_kcompactd(pg_data_t *pgdat, int order, int highest_zoneidx);
@@ -212,9 +212,8 @@ static inline bool compaction_withdrawn(enum compact_result result)
return true;
}
-static inline int kcompactd_run(int nid)
+static inline void kcompactd_run(int nid)
{
- return 0;
}
static inline void kcompactd_stop(int nid)
{
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 1c758b0e0359..594357881b0b 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -235,6 +235,7 @@ typedef struct compat_siginfo {
struct {
compat_ulong_t _data;
u32 _type;
+ u32 _flags;
} _perf;
};
} _sigfault;
@@ -258,6 +259,37 @@ struct compat_rlimit {
compat_ulong_t rlim_max;
};
+#ifdef __ARCH_NEED_COMPAT_FLOCK64_PACKED
+#define __ARCH_COMPAT_FLOCK64_PACK __attribute__((packed))
+#else
+#define __ARCH_COMPAT_FLOCK64_PACK
+#endif
+
+struct compat_flock {
+ short l_type;
+ short l_whence;
+ compat_off_t l_start;
+ compat_off_t l_len;
+#ifdef __ARCH_COMPAT_FLOCK_EXTRA_SYSID
+ __ARCH_COMPAT_FLOCK_EXTRA_SYSID
+#endif
+ compat_pid_t l_pid;
+#ifdef __ARCH_COMPAT_FLOCK_PAD
+ __ARCH_COMPAT_FLOCK_PAD
+#endif
+};
+
+struct compat_flock64 {
+ short l_type;
+ short l_whence;
+ compat_loff_t l_start;
+ compat_loff_t l_len;
+ compat_pid_t l_pid;
+#ifdef __ARCH_COMPAT_FLOCK64_PAD
+ __ARCH_COMPAT_FLOCK64_PAD
+#endif
+} __ARCH_COMPAT_FLOCK64_PACK;
+
struct compat_rusage {
struct old_timeval32 ru_utime;
struct old_timeval32 ru_stime;
@@ -895,6 +927,43 @@ asmlinkage long compat_sys_sigaction(int sig,
/* obsolete: net/socket.c */
asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
+#ifdef __ARCH_WANT_COMPAT_TRUNCATE64
+asmlinkage long compat_sys_truncate64(const char __user *pathname, compat_arg_u64(len));
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_FTRUNCATE64
+asmlinkage long compat_sys_ftruncate64(unsigned int fd, compat_arg_u64(len));
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_FALLOCATE
+asmlinkage long compat_sys_fallocate(int fd, int mode, compat_arg_u64(offset),
+ compat_arg_u64(len));
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_PREAD64
+asmlinkage long compat_sys_pread64(unsigned int fd, char __user *buf, size_t count,
+ compat_arg_u64(pos));
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_PWRITE64
+asmlinkage long compat_sys_pwrite64(unsigned int fd, const char __user *buf, size_t count,
+ compat_arg_u64(pos));
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_SYNC_FILE_RANGE
+asmlinkage long compat_sys_sync_file_range(int fd, compat_arg_u64(pos),
+ compat_arg_u64(nbytes), unsigned int flags);
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_FADVISE64_64
+asmlinkage long compat_sys_fadvise64_64(int fd, compat_arg_u64(pos),
+ compat_arg_u64(len), int advice);
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_READAHEAD
+asmlinkage long compat_sys_readahead(int fd, compat_arg_u64(offset), size_t count);
+#endif
+
#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
/**
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index 3c4de9b6c6e3..c84fec767445 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -68,3 +68,38 @@
#define __nocfi __attribute__((__no_sanitize__("cfi")))
#define __cficanonical __attribute__((__cfi_canonical_jump_table__))
+
+#if defined(CONFIG_CFI_CLANG)
+/*
+ * With CONFIG_CFI_CLANG, the compiler replaces function address
+ * references with the address of the function's CFI jump table
+ * entry. The function_nocfi macro always returns the address of the
+ * actual function instead.
+ */
+#define function_nocfi(x) __builtin_function_start(x)
+#endif
+
+/*
+ * Turn individual warnings and errors on and off locally, depending
+ * on version.
+ */
+#define __diag_clang(version, severity, s) \
+ __diag_clang_ ## version(__diag_clang_ ## severity s)
+
+/* Severity used in pragma directives */
+#define __diag_clang_ignore ignored
+#define __diag_clang_warn warning
+#define __diag_clang_error error
+
+#define __diag_str1(s) #s
+#define __diag_str(s) __diag_str1(s)
+#define __diag(s) _Pragma(__diag_str(clang diagnostic s))
+
+#if CONFIG_CLANG_VERSION >= 110000
+#define __diag_clang_11(s) __diag(s)
+#else
+#define __diag_clang_11(s)
+#endif
+
+#define __diag_ignore_all(option, comment) \
+ __diag_clang(11, ignore, option)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index ccbbd31b3aae..a0c55eeaeaf1 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -66,14 +66,6 @@
__builtin_unreachable(); \
} while (0)
-#if defined(RANDSTRUCT_PLUGIN) && !defined(__CHECKER__)
-#define __randomize_layout __attribute__((randomize_layout))
-#define __no_randomize_layout __attribute__((no_randomize_layout))
-/* This anon struct can add padding, so only enable it under randstruct. */
-#define randomized_struct_fields_start struct {
-#define randomized_struct_fields_end } __randomize_layout;
-#endif
-
/*
* GCC 'asm goto' miscompiles certain code sequences:
*
@@ -97,6 +89,10 @@
#define KASAN_ABI_VERSION 4
#endif
+#ifdef CONFIG_SHADOW_CALL_STACK
+#define __noscs __attribute__((__no_sanitize__("shadow-call-stack")))
+#endif
+
#if __has_attribute(__no_sanitize_address__)
#define __no_sanitize_address __attribute__((no_sanitize_address))
#else
@@ -151,6 +147,9 @@
#define __diag_GCC_8(s)
#endif
+#define __diag_ignore_all(option, comment) \
+ __diag_GCC(8, ignore, option)
+
/*
* Prior to 9.1, -Wno-alloc-size-larger-than (and therefore the "alloc_size"
* attribute) do not work, and must be disabled.
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 429dcebe2b99..01ce94b58b42 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -109,7 +109,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
#endif
/* Unreachable code */
-#ifdef CONFIG_STACK_VALIDATION
+#ifdef CONFIG_OBJTOOL
/*
* These macros help objtool understand GCC code flow for unreachable code.
* The __COUNTER__ based labels are a hack to make each instance of the macros
@@ -117,14 +117,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
*/
#define __stringify_label(n) #n
-#define __annotate_reachable(c) ({ \
- asm volatile(__stringify_label(c) ":\n\t" \
- ".pushsection .discard.reachable\n\t" \
- ".long " __stringify_label(c) "b - .\n\t" \
- ".popsection\n\t" : : "i" (c)); \
-})
-#define annotate_reachable() __annotate_reachable(__COUNTER__)
-
#define __annotate_unreachable(c) ({ \
asm volatile(__stringify_label(c) ":\n\t" \
".pushsection .discard.unreachable\n\t" \
@@ -133,24 +125,14 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
})
#define annotate_unreachable() __annotate_unreachable(__COUNTER__)
-#define ASM_UNREACHABLE \
- "999:\n\t" \
- ".pushsection .discard.unreachable\n\t" \
- ".long 999b - .\n\t" \
- ".popsection\n\t"
-
/* Annotate a C jump table to allow objtool to follow the code flow */
#define __annotate_jump_table __section(".rodata..c_jump_table")
-#else
-#define annotate_reachable()
+#else /* !CONFIG_OBJTOOL */
#define annotate_unreachable()
#define __annotate_jump_table
-#endif
+#endif /* CONFIG_OBJTOOL */
-#ifndef ASM_UNREACHABLE
-# define ASM_UNREACHABLE
-#endif
#ifndef unreachable
# define unreachable() do { \
annotate_unreachable(); \
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index 37e260020221..445e80517cab 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -101,6 +101,19 @@
#endif
/*
+ * Optional: not supported by gcc
+ * Optional: only supported since clang >= 14.0
+ * Optional: not supported by icc
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#diagnose_as_builtin
+ */
+#if __has_attribute(__diagnose_as_builtin__)
+# define __diagnose_as(builtin...) __attribute__((__diagnose_as_builtin__(builtin)))
+#else
+# define __diagnose_as(builtin...)
+#endif
+
+/*
* Don't. Just don't. See commit 771c035372a0 ("deprecate the '__deprecated'
* attribute warnings entirely and for good") for more information.
*
@@ -258,12 +271,38 @@
#define __noreturn __attribute__((__noreturn__))
/*
+ * Optional: not supported by gcc.
+ * Optional: not supported by icc.
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#overloadable
+ */
+#if __has_attribute(__overloadable__)
+# define __overloadable __attribute__((__overloadable__))
+#else
+# define __overloadable
+#endif
+
+/*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-packed-type-attribute
* clang: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-packed-variable-attribute
*/
#define __packed __attribute__((__packed__))
/*
+ * Note: the "type" argument should match any __builtin_object_size(p, type) usage.
+ *
+ * Optional: not supported by gcc.
+ * Optional: not supported by icc.
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#pass-object-size-pass-dynamic-object-size
+ */
+#if __has_attribute(__pass_object_size__)
+# define __pass_object_size(type) __attribute__((__pass_object_size__(type)))
+#else
+# define __pass_object_size(type)
+#endif
+
+/*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-pure-function-attribute
*/
#define __pure __attribute__((__pure__))
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 3c1795fdb568..d08dfcb0ac68 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -4,6 +4,14 @@
#ifndef __ASSEMBLY__
+#if defined(CONFIG_DEBUG_INFO_BTF) && defined(CONFIG_PAHOLE_HAS_BTF_TAG) && \
+ __has_attribute(btf_type_tag)
+# define BTF_TYPE_TAG(value) __attribute__((btf_type_tag(#value)))
+#else
+# define BTF_TYPE_TAG(value) /* nothing */
+#endif
+
+/* sparse defines __CHECKER__; see Documentation/dev-tools/sparse.rst */
#ifdef __CHECKER__
/* address spaces */
# define __kernel __attribute__((address_space(0)))
@@ -32,10 +40,10 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
# ifdef STRUCTLEAK_PLUGIN
# define __user __attribute__((user))
# else
-# define __user
+# define __user BTF_TYPE_TAG(user)
# endif
# define __iomem
-# define __percpu
+# define __percpu BTF_TYPE_TAG(percpu)
# define __rcu
# define __chk_user_ptr(x) (void)0
# define __chk_io_ptr(x) (void)0
@@ -137,8 +145,6 @@ struct ftrace_likely_data {
*/
#define __naked __attribute__((__naked__)) notrace
-#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
-
/*
* Prefer gnu_inline, so that extern inline functions do not emit an
* externally visible function. This makes extern inline behave as per gnu89
@@ -236,15 +242,15 @@ struct ftrace_likely_data {
# define __latent_entropy
#endif
-#ifndef __randomize_layout
+#if defined(RANDSTRUCT) && !defined(__CHECKER__)
+# define __randomize_layout __designated_init __attribute__((randomize_layout))
+# define __no_randomize_layout __attribute__((no_randomize_layout))
+/* This anon struct can add padding, so only enable it under randstruct. */
+# define randomized_struct_fields_start struct {
+# define randomized_struct_fields_end } __randomize_layout;
+#else
# define __randomize_layout __designated_init
-#endif
-
-#ifndef __no_randomize_layout
# define __no_randomize_layout
-#endif
-
-#ifndef randomized_struct_fields_start
# define randomized_struct_fields_start
# define randomized_struct_fields_end
#endif
@@ -368,4 +374,8 @@ struct ftrace_likely_data {
#define __diag_error(compiler, version, option, comment) \
__diag_ ## compiler(version, error, option)
+#ifndef __diag_ignore_all
+#define __diag_ignore_all(option, comment)
+#endif
+
#endif /* __LINUX_COMPILER_TYPES_H */
diff --git a/include/linux/component.h b/include/linux/component.h
index 16de18f473d7..df4aa75c9e7c 100644
--- a/include/linux/component.h
+++ b/include/linux/component.h
@@ -38,10 +38,10 @@ int component_add_typed(struct device *dev, const struct component_ops *ops,
int subcomponent);
void component_del(struct device *, const struct component_ops *);
-int component_bind_all(struct device *master, void *master_data);
-void component_unbind_all(struct device *master, void *master_data);
+int component_bind_all(struct device *parent, void *data);
+void component_unbind_all(struct device *parent, void *data);
-struct master;
+struct aggregate_device;
/**
* struct component_master_ops - callback for the aggregate driver
@@ -82,6 +82,12 @@ struct component_master_ops {
void (*unbind)(struct device *master);
};
+/* A set helper functions for component compare/release */
+int component_compare_of(struct device *dev, void *data);
+void component_release_of(struct device *dev, void *data);
+int component_compare_dev(struct device *dev, void *data);
+int component_compare_dev_name(struct device *dev, void *data);
+
void component_master_del(struct device *,
const struct component_master_ops *);
@@ -89,22 +95,22 @@ struct component_match;
int component_master_add_with_match(struct device *,
const struct component_master_ops *, struct component_match *);
-void component_match_add_release(struct device *master,
+void component_match_add_release(struct device *parent,
struct component_match **matchptr,
void (*release)(struct device *, void *),
int (*compare)(struct device *, void *), void *compare_data);
-void component_match_add_typed(struct device *master,
+void component_match_add_typed(struct device *parent,
struct component_match **matchptr,
int (*compare_typed)(struct device *, int, void *), void *compare_data);
/**
* component_match_add - add a component match entry
- * @master: device with the aggregate driver
+ * @parent: device with the aggregate driver
* @matchptr: pointer to the list of component matches
* @compare: compare function to match against all components
* @compare_data: opaque pointer passed to the @compare function
*
- * Adds a new component match to the list stored in @matchptr, which the @master
+ * Adds a new component match to the list stored in @matchptr, which the @parent
* aggregate driver needs to function. The list of component matches pointed to
* by @matchptr must be initialized to NULL before adding the first match. This
* only matches against components added with component_add().
@@ -114,11 +120,11 @@ void component_match_add_typed(struct device *master,
*
* See also component_match_add_release() and component_match_add_typed().
*/
-static inline void component_match_add(struct device *master,
+static inline void component_match_add(struct device *parent,
struct component_match **matchptr,
int (*compare)(struct device *, void *), void *compare_data)
{
- component_match_add_release(master, matchptr, NULL, compare,
+ component_match_add_release(parent, matchptr, NULL, compare,
compare_data);
}
diff --git a/include/linux/console.h b/include/linux/console.h
index 7cd758a4f44e..143653090c48 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -16,6 +16,7 @@
#include <linux/atomic.h>
#include <linux/types.h>
+#include <linux/mutex.h>
struct vc_data;
struct console_font_op;
@@ -151,6 +152,24 @@ struct console {
int cflag;
uint ispeed;
uint ospeed;
+ u64 seq;
+ unsigned long dropped;
+ struct task_struct *thread;
+ bool blocked;
+
+ /*
+ * The per-console lock is used by printing kthreads to synchronize
+ * this console with callers of console_lock(). This is necessary in
+ * order to allow printing kthreads to run in parallel to each other,
+ * while each safely accessing the @blocked field and synchronizing
+ * against direct printing via console_lock/console_unlock.
+ *
+ * Note: For synchronizing against direct printing via
+ * console_trylock/console_unlock, see the static global
+ * variable @console_kthreads_active.
+ */
+ struct mutex lock;
+
void *data;
struct console *next;
};
diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h
index 65a60d3313b0..ae1e63e26947 100644
--- a/include/linux/context_tracking_state.h
+++ b/include/linux/context_tracking_state.h
@@ -46,10 +46,10 @@ static __always_inline bool context_tracking_in_user(void)
return __this_cpu_read(context_tracking.state) == CONTEXT_USER;
}
#else
-static inline bool context_tracking_in_user(void) { return false; }
-static inline bool context_tracking_enabled(void) { return false; }
-static inline bool context_tracking_enabled_cpu(int cpu) { return false; }
-static inline bool context_tracking_enabled_this_cpu(void) { return false; }
+static __always_inline bool context_tracking_in_user(void) { return false; }
+static __always_inline bool context_tracking_enabled(void) { return false; }
+static __always_inline bool context_tracking_enabled_cpu(int cpu) { return false; }
+static __always_inline bool context_tracking_enabled_this_cpu(void) { return false; }
#endif /* CONFIG_CONTEXT_TRACKING */
#endif
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 78fcd776b185..08a1d3e7e46d 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -12,29 +12,43 @@ struct core_vma_metadata {
unsigned long start, end;
unsigned long flags;
unsigned long dump_size;
+ unsigned long pgoff;
+ struct file *file;
};
-extern int core_uses_pid;
-extern char core_pattern[];
-extern unsigned int core_pipe_limit;
+struct coredump_params {
+ const kernel_siginfo_t *siginfo;
+ struct pt_regs *regs;
+ struct file *file;
+ unsigned long limit;
+ unsigned long mm_flags;
+ loff_t written;
+ loff_t pos;
+ loff_t to_skip;
+ int vma_count;
+ size_t vma_data_size;
+ struct core_vma_metadata *vma_meta;
+};
/*
* These are the only things you should do on a core-file: use only these
* functions to write out all the necessary info.
*/
-struct coredump_params;
extern void dump_skip_to(struct coredump_params *cprm, unsigned long to);
extern void dump_skip(struct coredump_params *cprm, size_t nr);
extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
extern int dump_align(struct coredump_params *cprm, int align);
int dump_user_range(struct coredump_params *cprm, unsigned long start,
unsigned long len);
-int dump_vma_snapshot(struct coredump_params *cprm, int *vma_count,
- struct core_vma_metadata **vma_meta,
- size_t *vma_data_size_ptr);
extern void do_coredump(const kernel_siginfo_t *siginfo);
#else
static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
+#if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL)
+extern void validate_coredump_safety(void);
+#else
+static inline void validate_coredump_safety(void) {}
+#endif
+
#endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 93a2922b7653..9f445f09fcfe 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -36,7 +36,6 @@
extern struct bus_type coresight_bustype;
enum coresight_dev_type {
- CORESIGHT_DEV_TYPE_NONE,
CORESIGHT_DEV_TYPE_SINK,
CORESIGHT_DEV_TYPE_LINK,
CORESIGHT_DEV_TYPE_LINKSINK,
@@ -46,7 +45,6 @@ enum coresight_dev_type {
};
enum coresight_dev_subtype_sink {
- CORESIGHT_DEV_SUBTYPE_SINK_NONE,
CORESIGHT_DEV_SUBTYPE_SINK_PORT,
CORESIGHT_DEV_SUBTYPE_SINK_BUFFER,
CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM,
@@ -54,21 +52,18 @@ enum coresight_dev_subtype_sink {
};
enum coresight_dev_subtype_link {
- CORESIGHT_DEV_SUBTYPE_LINK_NONE,
CORESIGHT_DEV_SUBTYPE_LINK_MERG,
CORESIGHT_DEV_SUBTYPE_LINK_SPLIT,
CORESIGHT_DEV_SUBTYPE_LINK_FIFO,
};
enum coresight_dev_subtype_source {
- CORESIGHT_DEV_SUBTYPE_SOURCE_NONE,
CORESIGHT_DEV_SUBTYPE_SOURCE_PROC,
CORESIGHT_DEV_SUBTYPE_SOURCE_BUS,
CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE,
};
enum coresight_dev_subtype_helper {
- CORESIGHT_DEV_SUBTYPE_HELPER_NONE,
CORESIGHT_DEV_SUBTYPE_HELPER_CATU,
};
diff --git a/include/linux/counter.h b/include/linux/counter.h
index b7d0a00a61cf..1fe17f5adb09 100644
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -38,64 +38,64 @@ enum counter_comp_type {
* @type: Counter component data type
* @name: device-specific component name
* @priv: component-relevant data
- * @action_read Synapse action mode read callback. The read value of the
+ * @action_read: Synapse action mode read callback. The read value of the
* respective Synapse action mode should be passed back via
* the action parameter.
- * @device_u8_read Device u8 component read callback. The read value of the
+ * @device_u8_read: Device u8 component read callback. The read value of the
* respective Device u8 component should be passed back via
* the val parameter.
- * @count_u8_read Count u8 component read callback. The read value of the
+ * @count_u8_read: Count u8 component read callback. The read value of the
* respective Count u8 component should be passed back via
* the val parameter.
- * @signal_u8_read Signal u8 component read callback. The read value of the
+ * @signal_u8_read: Signal u8 component read callback. The read value of the
* respective Signal u8 component should be passed back via
* the val parameter.
- * @device_u32_read Device u32 component read callback. The read value of
+ * @device_u32_read: Device u32 component read callback. The read value of
* the respective Device u32 component should be passed
* back via the val parameter.
- * @count_u32_read Count u32 component read callback. The read value of the
+ * @count_u32_read: Count u32 component read callback. The read value of the
* respective Count u32 component should be passed back via
* the val parameter.
- * @signal_u32_read Signal u32 component read callback. The read value of
+ * @signal_u32_read: Signal u32 component read callback. The read value of
* the respective Signal u32 component should be passed
* back via the val parameter.
- * @device_u64_read Device u64 component read callback. The read value of
+ * @device_u64_read: Device u64 component read callback. The read value of
* the respective Device u64 component should be passed
* back via the val parameter.
- * @count_u64_read Count u64 component read callback. The read value of the
+ * @count_u64_read: Count u64 component read callback. The read value of the
* respective Count u64 component should be passed back via
* the val parameter.
- * @signal_u64_read Signal u64 component read callback. The read value of
+ * @signal_u64_read: Signal u64 component read callback. The read value of
* the respective Signal u64 component should be passed
* back via the val parameter.
- * @action_write Synapse action mode write callback. The write value of
+ * @action_write: Synapse action mode write callback. The write value of
* the respective Synapse action mode is passed via the
* action parameter.
- * @device_u8_write Device u8 component write callback. The write value of
+ * @device_u8_write: Device u8 component write callback. The write value of
* the respective Device u8 component is passed via the val
* parameter.
- * @count_u8_write Count u8 component write callback. The write value of
+ * @count_u8_write: Count u8 component write callback. The write value of
* the respective Count u8 component is passed via the val
* parameter.
- * @signal_u8_write Signal u8 component write callback. The write value of
+ * @signal_u8_write: Signal u8 component write callback. The write value of
* the respective Signal u8 component is passed via the val
* parameter.
- * @device_u32_write Device u32 component write callback. The write value of
+ * @device_u32_write: Device u32 component write callback. The write value of
* the respective Device u32 component is passed via the
* val parameter.
- * @count_u32_write Count u32 component write callback. The write value of
+ * @count_u32_write: Count u32 component write callback. The write value of
* the respective Count u32 component is passed via the val
* parameter.
- * @signal_u32_write Signal u32 component write callback. The write value of
+ * @signal_u32_write: Signal u32 component write callback. The write value of
* the respective Signal u32 component is passed via the
* val parameter.
- * @device_u64_write Device u64 component write callback. The write value of
+ * @device_u64_write: Device u64 component write callback. The write value of
* the respective Device u64 component is passed via the
* val parameter.
- * @count_u64_write Count u64 component write callback. The write value of
+ * @count_u64_write: Count u64 component write callback. The write value of
* the respective Count u64 component is passed via the val
* parameter.
- * @signal_u64_write Signal u64 component write callback. The write value of
+ * @signal_u64_write: Signal u64 component write callback. The write value of
* the respective Signal u64 component is passed via the
* val parameter.
*/
@@ -314,8 +314,6 @@ struct counter_device {
struct counter_comp *ext;
size_t num_ext;
- void *priv;
-
struct device dev;
struct cdev chrdev;
struct list_head events_list;
@@ -329,10 +327,17 @@ struct counter_device {
struct mutex ops_exist_lock;
};
-int counter_register(struct counter_device *const counter);
+void *counter_priv(const struct counter_device *const counter);
+
+struct counter_device *counter_alloc(size_t sizeof_priv);
+void counter_put(struct counter_device *const counter);
+int counter_add(struct counter_device *const counter);
+
void counter_unregister(struct counter_device *const counter);
-int devm_counter_register(struct device *dev,
- struct counter_device *const counter);
+struct counter_device *devm_counter_alloc(struct device *dev,
+ size_t sizeof_priv);
+int devm_counter_add(struct device *dev,
+ struct counter_device *const counter);
void counter_push_event(struct counter_device *const counter, const u8 event,
const u8 channel);
diff --git a/include/linux/cper.h b/include/linux/cper.h
index 6a511a1078ca..eacb7dd7b3af 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -558,6 +558,7 @@ extern const char *const cper_proc_error_type_strs[4];
u64 cper_next_record_id(void);
const char *cper_severity_str(unsigned int);
const char *cper_mem_err_type_str(unsigned int);
+const char *cper_mem_err_status_str(u64 status);
void cper_print_bits(const char *prefix, unsigned int bits,
const char * const strs[], unsigned int strs_size);
void cper_mem_err_pack(const struct cper_sec_mem_err *,
@@ -568,5 +569,7 @@ void cper_print_proc_arm(const char *pfx,
const struct cper_sec_proc_arm *proc);
void cper_print_proc_ia(const char *pfx,
const struct cper_sec_proc_ia *proc);
+int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg);
+int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg);
#endif
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 9cf51e41e697..2c7477354744 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -65,6 +65,9 @@ extern ssize_t cpu_show_tsx_async_abort(struct device *dev,
extern ssize_t cpu_show_itlb_multihit(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_srbds(struct device *dev, struct device_attribute *attr, char *buf);
+extern ssize_t cpu_show_mmio_stale_data(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
extern __printf(4, 5)
struct device *cpu_device_create(struct device *parent, void *drvdata,
@@ -167,7 +170,7 @@ static inline int suspend_disable_secondary_cpus(void) { return 0; }
static inline void suspend_enable_secondary_cpus(void) { }
#endif /* !CONFIG_PM_SLEEP_SMP */
-void cpu_startup_entry(enum cpuhp_state state);
+void __noreturn cpu_startup_entry(enum cpuhp_state state);
void cpu_idle_poll_ctrl(bool enable);
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 1ab29e61b078..d5595d57f4e5 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -382,6 +382,9 @@ struct cpufreq_driver {
int (*suspend)(struct cpufreq_policy *policy);
int (*resume)(struct cpufreq_policy *policy);
+ /* Will be called after the driver is fully initialized */
+ void (*ready)(struct cpufreq_policy *policy);
+
struct freq_attr **attr;
/* platform specific boost support code */
@@ -658,6 +661,11 @@ struct gov_attr_set {
/* sysfs ops for cpufreq governors */
extern const struct sysfs_ops governor_sysfs_ops;
+static inline struct gov_attr_set *to_gov_attr_set(struct kobject *kobj)
+{
+ return container_of(kobj, struct gov_attr_set, kobj);
+}
+
void gov_attr_set_init(struct gov_attr_set *attr_set, struct list_head *list_node);
void gov_attr_set_get(struct gov_attr_set *attr_set, struct list_head *list_node);
unsigned int gov_attr_set_put(struct gov_attr_set *attr_set, struct list_head *list_node);
@@ -1191,7 +1199,6 @@ static inline void sched_cpufreq_governor_change(struct cpufreq_policy *policy,
struct cpufreq_governor *old_gov) { }
#endif
-extern void arch_freq_prepare_all(void);
extern unsigned int arch_freq_get_on_cpu(int cpu);
#ifndef arch_set_freq_scale
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 411a428ace4d..19f0dbfdd7fe 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -100,6 +100,7 @@ enum cpuhp_state {
CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
CPUHP_PADATA_DEAD,
CPUHP_AP_DTPM_CPU_DEAD,
+ CPUHP_RANDOM_PREPARE,
CPUHP_WORKQUEUE_PREP,
CPUHP_POWER_NUMA_PREPARE,
CPUHP_HRTIMERS_PREPARE,
@@ -129,6 +130,7 @@ enum cpuhp_state {
CPUHP_ZCOMP_PREPARE,
CPUHP_TIMERS_PREPARE,
CPUHP_MIPS_SOC_PREPARE,
+ CPUHP_LOONGARCH_SOC_PREPARE,
CPUHP_BP_PREPARE_DYN,
CPUHP_BP_PREPARE_DYN_END = CPUHP_BP_PREPARE_DYN + 20,
CPUHP_BRINGUP_CPU,
@@ -165,6 +167,7 @@ enum cpuhp_state {
CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
CPUHP_AP_PERF_ARM_ACPI_STARTING,
CPUHP_AP_PERF_ARM_STARTING,
+ CPUHP_AP_PERF_RISCV_STARTING,
CPUHP_AP_ARM_L2X0_STARTING,
CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
CPUHP_AP_ARM_ARCH_TIMER_STARTING,
@@ -220,6 +223,7 @@ enum cpuhp_state {
CPUHP_AP_PERF_S390_SF_ONLINE,
CPUHP_AP_PERF_ARM_CCI_ONLINE,
CPUHP_AP_PERF_ARM_CCN_ONLINE,
+ CPUHP_AP_PERF_ARM_HISI_CPA_ONLINE,
CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE,
CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
@@ -231,6 +235,7 @@ enum cpuhp_state {
CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE,
CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE,
+ CPUHP_AP_PERF_ARM_MARVELL_CN10K_DDR_ONLINE,
CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE,
CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE,
CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE,
@@ -240,6 +245,7 @@ enum cpuhp_state {
CPUHP_AP_PERF_CSKY_ONLINE,
CPUHP_AP_WATCHDOG_ONLINE,
CPUHP_AP_WORKQUEUE_ONLINE,
+ CPUHP_AP_RANDOM_ONLINE,
CPUHP_AP_RCUTREE_ONLINE,
CPUHP_AP_BASE_CACHEINFO_ONLINE,
CPUHP_AP_ONLINE_DYN,
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 1e7399fc69c0..fe29ac7cc469 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -102,7 +102,7 @@ extern atomic_t __num_online_cpus;
extern cpumask_t cpus_booted_once_mask;
-static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
+static __always_inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
{
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
WARN_ON_ONCE(cpu >= bits);
@@ -110,7 +110,7 @@ static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
}
/* verify cpu argument to cpumask_* operators */
-static inline unsigned int cpumask_check(unsigned int cpu)
+static __always_inline unsigned int cpumask_check(unsigned int cpu)
{
cpu_max_bits_warn(cpu, nr_cpumask_bits);
return cpu;
@@ -123,6 +123,17 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
return 0;
}
+static inline unsigned int cpumask_first_zero(const struct cpumask *srcp)
+{
+ return 0;
+}
+
+static inline unsigned int cpumask_first_and(const struct cpumask *srcp1,
+ const struct cpumask *srcp2)
+{
+ return 0;
+}
+
static inline unsigned int cpumask_last(const struct cpumask *srcp)
{
return 0;
@@ -167,7 +178,7 @@ static inline unsigned int cpumask_local_spread(unsigned int i, int node)
static inline int cpumask_any_and_distribute(const struct cpumask *src1p,
const struct cpumask *src2p) {
- return cpumask_next_and(-1, src1p, src2p);
+ return cpumask_first_and(src1p, src2p);
}
static inline int cpumask_any_distribute(const struct cpumask *srcp)
@@ -196,6 +207,30 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
}
/**
+ * cpumask_first_zero - get the first unset cpu in a cpumask
+ * @srcp: the cpumask pointer
+ *
+ * Returns >= nr_cpu_ids if all cpus are set.
+ */
+static inline unsigned int cpumask_first_zero(const struct cpumask *srcp)
+{
+ return find_first_zero_bit(cpumask_bits(srcp), nr_cpumask_bits);
+}
+
+/**
+ * cpumask_first_and - return the first cpu from *srcp1 & *srcp2
+ * @src1p: the first input
+ * @src2p: the second input
+ *
+ * Returns >= nr_cpu_ids if no cpus set in both. See also cpumask_next_and().
+ */
+static inline
+unsigned int cpumask_first_and(const struct cpumask *srcp1, const struct cpumask *srcp2)
+{
+ return find_first_and_bit(cpumask_bits(srcp1), cpumask_bits(srcp2), nr_cpumask_bits);
+}
+
+/**
* cpumask_last - get the last CPU in a cpumask
* @srcp: - the cpumask pointer
*
@@ -306,12 +341,12 @@ extern int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool
* @cpu: cpu number (< nr_cpu_ids)
* @dstp: the cpumask pointer
*/
-static inline void cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+static __always_inline void cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
{
set_bit(cpumask_check(cpu), cpumask_bits(dstp));
}
-static inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+static __always_inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
{
__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
}
@@ -322,12 +357,12 @@ static inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
* @cpu: cpu number (< nr_cpu_ids)
* @dstp: the cpumask pointer
*/
-static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+static __always_inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp)
{
clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
}
-static inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+static __always_inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
{
__clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
}
@@ -339,7 +374,7 @@ static inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
*
* Returns 1 if @cpu is set in @cpumask, else returns 0
*/
-static inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
+static __always_inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
{
return test_bit(cpumask_check(cpu), cpumask_bits((cpumask)));
}
@@ -353,7 +388,7 @@ static inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
*
* test_and_set_bit wrapper for cpumasks.
*/
-static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
+static __always_inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
{
return test_and_set_bit(cpumask_check(cpu), cpumask_bits(cpumask));
}
@@ -367,7 +402,7 @@ static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
*
* test_and_clear_bit wrapper for cpumasks.
*/
-static inline int cpumask_test_and_clear_cpu(int cpu, struct cpumask *cpumask)
+static __always_inline int cpumask_test_and_clear_cpu(int cpu, struct cpumask *cpumask)
{
return test_and_clear_bit(cpumask_check(cpu), cpumask_bits(cpumask));
}
@@ -586,15 +621,6 @@ static inline void cpumask_copy(struct cpumask *dstp,
#define cpumask_any(srcp) cpumask_first(srcp)
/**
- * cpumask_first_and - return the first cpu from *srcp1 & *srcp2
- * @src1p: the first input
- * @src2p: the second input
- *
- * Returns >= nr_cpu_ids if no cpus set in both. See also cpumask_next_and().
- */
-#define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p))
-
-/**
* cpumask_any_and - pick a "random" cpu from *mask1 & *mask2
* @mask1: the first input cpumask
* @mask2: the second input cpumask
diff --git a/include/linux/cpumask_api.h b/include/linux/cpumask_api.h
new file mode 100644
index 000000000000..83bd3ebe82b0
--- /dev/null
+++ b/include/linux/cpumask_api.h
@@ -0,0 +1 @@
+#include <linux/cpumask.h>
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
index 620821549b23..0f3a656293b0 100644
--- a/include/linux/crash_dump.h
+++ b/include/linux/crash_dump.h
@@ -24,11 +24,10 @@ extern int remap_oldmem_pfn_range(struct vm_area_struct *vma,
unsigned long from, unsigned long pfn,
unsigned long size, pgprot_t prot);
-extern ssize_t copy_oldmem_page(unsigned long, char *, size_t,
- unsigned long, int);
-extern ssize_t copy_oldmem_page_encrypted(unsigned long pfn, char *buf,
- size_t csize, unsigned long offset,
- int userbuf);
+ssize_t copy_oldmem_page(struct iov_iter *i, unsigned long pfn, size_t csize,
+ unsigned long offset);
+ssize_t copy_oldmem_page_encrypted(struct iov_iter *iter, unsigned long pfn,
+ size_t csize, unsigned long offset);
void vmcore_cleanup(void);
@@ -135,13 +134,11 @@ static inline int vmcore_add_device_dump(struct vmcoredd_data *data)
#endif /* CONFIG_PROC_VMCORE_DEVICE_DUMP */
#ifdef CONFIG_PROC_VMCORE
-ssize_t read_from_oldmem(char *buf, size_t count,
- u64 *ppos, int userbuf,
- bool encrypted);
+ssize_t read_from_oldmem(struct iov_iter *iter, size_t count,
+ u64 *ppos, bool encrypted);
#else
-static inline ssize_t read_from_oldmem(char *buf, size_t count,
- u64 *ppos, int userbuf,
- bool encrypted)
+static inline ssize_t read_from_oldmem(struct iov_iter *iter, size_t count,
+ u64 *ppos, bool encrypted)
{
return -EOPNOTSUPP;
}
diff --git a/include/linux/crc-itu-t.h b/include/linux/crc-itu-t.h
index a4367051e192..2f991a427ade 100644
--- a/include/linux/crc-itu-t.h
+++ b/include/linux/crc-itu-t.h
@@ -4,7 +4,7 @@
*
* Implements the standard CRC ITU-T V.41:
* Width 16
- * Poly 0x1021 (x^16 + x^12 + x^15 + 1)
+ * Poly 0x1021 (x^16 + x^12 + x^5 + 1)
* Init 0
*/
diff --git a/include/linux/crc64.h b/include/linux/crc64.h
index c756e65a1b58..e044c60d1e61 100644
--- a/include/linux/crc64.h
+++ b/include/linux/crc64.h
@@ -7,5 +7,12 @@
#include <linux/types.h>
+#define CRC64_ROCKSOFT_STRING "crc64-rocksoft"
+
u64 __pure crc64_be(u64 crc, const void *p, size_t len);
+u64 __pure crc64_rocksoft_generic(u64 crc, const void *p, size_t len);
+
+u64 crc64_rocksoft(const unsigned char *buffer, size_t len);
+u64 crc64_rocksoft_update(u64 crc, const unsigned char *buffer, size_t len);
+
#endif /* _LINUX_CRC64_H */
diff --git a/include/linux/cred.h b/include/linux/cred.h
index fcbc6885cc09..9ed9232af934 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -176,7 +176,7 @@ extern int set_cred_ucounts(struct cred *);
* check for validity of credentials
*/
#ifdef CONFIG_DEBUG_CREDENTIALS
-extern void __invalid_creds(const struct cred *, const char *, unsigned);
+extern void __noreturn __invalid_creds(const struct cred *, const char *, unsigned);
extern void __validate_process_creds(struct task_struct *,
const char *, unsigned);
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 855869e1fd32..2324ab6f1846 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -133,6 +133,15 @@
#define CRYPTO_ALG_ALLOCATES_MEMORY 0x00010000
/*
+ * Mark an algorithm as a service implementation only usable by a
+ * template and never by a normal user of the kernel crypto API.
+ * This is intended to be used by algorithms that are themselves
+ * not FIPS-approved but may instead be used to implement parts of
+ * a FIPS-approved algorithm (e.g., dh vs. ffdhe2048(dh)).
+ */
+#define CRYPTO_ALG_FIPS_INTERNAL 0x00020000
+
+/*
* Transform masks and values (for crt_flags).
*/
#define CRYPTO_TFM_NEED_KEY 0x00000001
diff --git a/include/linux/cuda.h b/include/linux/cuda.h
index 45bfe9d61271..daf3e6f98444 100644
--- a/include/linux/cuda.h
+++ b/include/linux/cuda.h
@@ -12,7 +12,7 @@
#include <uapi/linux/cuda.h>
-extern int find_via_cuda(void);
+extern int __init find_via_cuda(void);
extern int cuda_request(struct adb_request *req,
void (*done)(struct adb_request *), int nbytes, ...);
extern void cuda_poll(void);
diff --git a/include/linux/damon.h b/include/linux/damon.h
index b4d4be3cc987..7c62da31ce4b 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -11,12 +11,19 @@
#include <linux/mutex.h>
#include <linux/time64.h>
#include <linux/types.h>
+#include <linux/random.h>
/* Minimal region size. Every damon_region is aligned by this. */
#define DAMON_MIN_REGION PAGE_SIZE
/* Max priority score for DAMON-based operation schemes */
#define DAMOS_MAX_SCORE (99)
+/* Get a random number in [l, r) */
+static inline unsigned long damon_rand(unsigned long l, unsigned long r)
+{
+ return l + prandom_u32_max(r - l);
+}
+
/**
* struct damon_addr_range - Represents an address region of [@start, @end).
* @start: Start address of the region (inclusive).
@@ -53,19 +60,18 @@ struct damon_region {
/**
* struct damon_target - Represents a monitoring target.
- * @id: Unique identifier for this target.
+ * @pid: The PID of the virtual address space to monitor.
* @nr_regions: Number of monitoring target regions of this target.
* @regions_list: Head of the monitoring target regions of this target.
* @list: List head for siblings.
*
* Each monitoring context could have multiple targets. For example, a context
* for virtual memory address spaces could have multiple target processes. The
- * @id of each target should be unique among the targets of the context. For
- * example, in the virtual address monitoring context, it could be a pidfd or
- * an address of an mm_struct.
+ * @pid should be set for appropriate &struct damon_operations including the
+ * virtual address spaces monitoring operations.
*/
struct damon_target {
- unsigned long id;
+ struct pid *pid;
unsigned int nr_regions;
struct list_head regions_list;
struct list_head list;
@@ -81,6 +87,7 @@ struct damon_target {
* @DAMOS_HUGEPAGE: Call ``madvise()`` for the region with MADV_HUGEPAGE.
* @DAMOS_NOHUGEPAGE: Call ``madvise()`` for the region with MADV_NOHUGEPAGE.
* @DAMOS_STAT: Do nothing but count the stat.
+ * @NR_DAMOS_ACTIONS: Total number of DAMOS actions
*/
enum damos_action {
DAMOS_WILLNEED,
@@ -89,6 +96,7 @@ enum damos_action {
DAMOS_HUGEPAGE,
DAMOS_NOHUGEPAGE,
DAMOS_STAT, /* Do nothing but only record the stat */
+ NR_DAMOS_ACTIONS,
};
/**
@@ -114,9 +122,9 @@ enum damos_action {
* uses smaller one as the effective quota.
*
* For selecting regions within the quota, DAMON prioritizes current scheme's
- * target memory regions using the &struct damon_primitive->get_scheme_score.
+ * target memory regions using the &struct damon_operations->get_scheme_score.
* You could customize the prioritization logic by setting &weight_sz,
- * &weight_nr_accesses, and &weight_age, because monitoring primitives are
+ * &weight_nr_accesses, and &weight_age, because monitoring operations are
* encouraged to respect those.
*/
struct damos_quota {
@@ -151,10 +159,12 @@ struct damos_quota {
*
* @DAMOS_WMARK_NONE: Ignore the watermarks of the given scheme.
* @DAMOS_WMARK_FREE_MEM_RATE: Free memory rate of the system in [0,1000].
+ * @NR_DAMOS_WMARK_METRICS: Total number of DAMOS watermark metrics
*/
enum damos_wmark_metric {
DAMOS_WMARK_NONE,
DAMOS_WMARK_FREE_MEM_RATE,
+ NR_DAMOS_WMARK_METRICS,
};
/**
@@ -186,6 +196,22 @@ struct damos_watermarks {
};
/**
+ * struct damos_stat - Statistics on a given scheme.
+ * @nr_tried: Total number of regions that the scheme is tried to be applied.
+ * @sz_tried: Total size of regions that the scheme is tried to be applied.
+ * @nr_applied: Total number of regions that the scheme is applied.
+ * @sz_applied: Total size of regions that the scheme is applied.
+ * @qt_exceeds: Total number of times the quota of the scheme has exceeded.
+ */
+struct damos_stat {
+ unsigned long nr_tried;
+ unsigned long sz_tried;
+ unsigned long nr_applied;
+ unsigned long sz_applied;
+ unsigned long qt_exceeds;
+};
+
+/**
* struct damos - Represents a Data Access Monitoring-based Operation Scheme.
* @min_sz_region: Minimum size of target regions.
* @max_sz_region: Maximum size of target regions.
@@ -196,8 +222,7 @@ struct damos_watermarks {
* @action: &damo_action to be applied to the target regions.
* @quota: Control the aggressiveness of this scheme.
* @wmarks: Watermarks for automated (in)activation of this scheme.
- * @stat_count: Total number of regions that this scheme is applied.
- * @stat_sz: Total size of regions that this scheme is applied.
+ * @stat: Statistics of this scheme.
* @list: List head for siblings.
*
* For each aggregation interval, DAMON finds regions which fit in the
@@ -228,18 +253,34 @@ struct damos {
enum damos_action action;
struct damos_quota quota;
struct damos_watermarks wmarks;
- unsigned long stat_count;
- unsigned long stat_sz;
+ struct damos_stat stat;
struct list_head list;
};
+/**
+ * enum damon_ops_id - Identifier for each monitoring operations implementation
+ *
+ * @DAMON_OPS_VADDR: Monitoring operations for virtual address spaces
+ * @DAMON_OPS_FVADDR: Monitoring operations for only fixed ranges of virtual
+ * address spaces
+ * @DAMON_OPS_PADDR: Monitoring operations for the physical address space
+ * @NR_DAMON_OPS: Number of monitoring operations implementations
+ */
+enum damon_ops_id {
+ DAMON_OPS_VADDR,
+ DAMON_OPS_FVADDR,
+ DAMON_OPS_PADDR,
+ NR_DAMON_OPS,
+};
+
struct damon_ctx;
/**
- * struct damon_primitive - Monitoring primitives for given use cases.
+ * struct damon_operations - Monitoring operations for given use cases.
*
- * @init: Initialize primitive-internal data structures.
- * @update: Update primitive-internal data structures.
+ * @id: Identifier of this operations set.
+ * @init: Initialize operations-related data structures.
+ * @update: Update operations-related data structures.
* @prepare_access_checks: Prepare next access check of target regions.
* @check_accesses: Check the accesses to target regions.
* @reset_aggregated: Reset aggregated accesses monitoring results.
@@ -249,18 +290,20 @@ struct damon_ctx;
* @cleanup: Clean up the context.
*
* DAMON can be extended for various address spaces and usages. For this,
- * users should register the low level primitives for their target address
- * space and usecase via the &damon_ctx.primitive. Then, the monitoring thread
+ * users should register the low level operations for their target address
+ * space and usecase via the &damon_ctx.ops. Then, the monitoring thread
* (&damon_ctx.kdamond) calls @init and @prepare_access_checks before starting
- * the monitoring, @update after each &damon_ctx.primitive_update_interval, and
+ * the monitoring, @update after each &damon_ctx.ops_update_interval, and
* @check_accesses, @target_valid and @prepare_access_checks after each
* &damon_ctx.sample_interval. Finally, @reset_aggregated is called after each
* &damon_ctx.aggr_interval.
*
- * @init should initialize primitive-internal data structures. For example,
+ * Each &struct damon_operations instance having valid @id can be registered
+ * via damon_register_ops() and selected by damon_select_ops() later.
+ * @init should initialize operations-related data structures. For example,
* this could be used to construct proper monitoring target regions and link
* those to @damon_ctx.adaptive_targets.
- * @update should update the primitive-internal data structures. For example,
+ * @update should update the operations-related data structures. For example,
* this could be used to update monitoring target regions for current status.
* @prepare_access_checks should manipulate the monitoring regions to be
* prepared for the next access check.
@@ -274,12 +317,14 @@ struct damon_ctx;
* as an integer in [0, &DAMOS_MAX_SCORE].
* @apply_scheme is called from @kdamond when a region for user provided
* DAMON-based operation scheme is found. It should apply the scheme's action
- * to the region. This is not used for &DAMON_ARBITRARY_TARGET case.
+ * to the region and return bytes of the region that the action is successfully
+ * applied.
* @target_valid should check whether the target is still valid for the
* monitoring.
* @cleanup is called from @kdamond just before its termination.
*/
-struct damon_primitive {
+struct damon_operations {
+ enum damon_ops_id id;
void (*init)(struct damon_ctx *context);
void (*update)(struct damon_ctx *context);
void (*prepare_access_checks)(struct damon_ctx *context);
@@ -288,8 +333,9 @@ struct damon_primitive {
int (*get_scheme_score)(struct damon_ctx *context,
struct damon_target *t, struct damon_region *r,
struct damos *scheme);
- int (*apply_scheme)(struct damon_ctx *context, struct damon_target *t,
- struct damon_region *r, struct damos *scheme);
+ unsigned long (*apply_scheme)(struct damon_ctx *context,
+ struct damon_target *t, struct damon_region *r,
+ struct damos *scheme);
bool (*target_valid)(void *target);
void (*cleanup)(struct damon_ctx *context);
};
@@ -298,6 +344,7 @@ struct damon_primitive {
* struct damon_callback - Monitoring events notification callbacks.
*
* @before_start: Called before starting the monitoring.
+ * @after_wmarks_check: Called after each schemes' watermarks check.
* @after_sampling: Called after each sampling.
* @after_aggregation: Called after each aggregation.
* @before_terminate: Called before terminating the monitoring.
@@ -308,6 +355,11 @@ struct damon_primitive {
* respectively. Therefore, those are good places for installing and cleaning
* @private.
*
+ * The monitoring thread calls @after_wmarks_check after each DAMON-based
+ * operation schemes' watermarks check. If users need to make changes to the
+ * attributes of the monitoring context while it's deactivated due to the
+ * watermarks, this is the good place to do.
+ *
* The monitoring thread calls @after_sampling and @after_aggregation for each
* of the sampling intervals and aggregation intervals, respectively.
* Therefore, users can safely access the monitoring results without additional
@@ -320,6 +372,7 @@ struct damon_callback {
void *private;
int (*before_start)(struct damon_ctx *context);
+ int (*after_wmarks_check)(struct damon_ctx *context);
int (*after_sampling)(struct damon_ctx *context);
int (*after_aggregation)(struct damon_ctx *context);
void (*before_terminate)(struct damon_ctx *context);
@@ -332,15 +385,15 @@ struct damon_callback {
*
* @sample_interval: The time between access samplings.
* @aggr_interval: The time between monitor results aggregations.
- * @primitive_update_interval: The time between monitoring primitive updates.
+ * @ops_update_interval: The time between monitoring operations updates.
*
* For each @sample_interval, DAMON checks whether each region is accessed or
* not. It aggregates and keeps the access information (number of accesses to
* each region) for @aggr_interval time. DAMON also checks whether the target
* memory regions need update (e.g., by ``mmap()`` calls from the application,
* in case of virtual memory monitoring) and applies the changes for each
- * @primitive_update_interval. All time intervals are in micro-seconds.
- * Please refer to &struct damon_primitive and &struct damon_callback for more
+ * @ops_update_interval. All time intervals are in micro-seconds.
+ * Please refer to &struct damon_operations and &struct damon_callback for more
* detail.
*
* @kdamond: Kernel thread who does the monitoring.
@@ -352,7 +405,7 @@ struct damon_callback {
*
* Once started, the monitoring thread runs until explicitly required to be
* terminated or every monitoring target is invalid. The validity of the
- * targets is checked via the &damon_primitive.target_valid of @primitive. The
+ * targets is checked via the &damon_operations.target_valid of @ops. The
* termination can also be explicitly requested by writing non-zero to
* @kdamond_stop. The thread sets @kdamond to NULL when it terminates.
* Therefore, users can know whether the monitoring is ongoing or terminated by
@@ -362,7 +415,7 @@ struct damon_callback {
* Note that the monitoring thread protects only @kdamond and @kdamond_stop via
* @kdamond_lock. Accesses to other fields must be protected by themselves.
*
- * @primitive: Set of monitoring primitives for given use cases.
+ * @ops: Set of monitoring operations for given use cases.
* @callback: Set of callbacks for monitoring events notifications.
*
* @min_nr_regions: The minimum number of adaptive monitoring regions.
@@ -373,17 +426,17 @@ struct damon_callback {
struct damon_ctx {
unsigned long sample_interval;
unsigned long aggr_interval;
- unsigned long primitive_update_interval;
+ unsigned long ops_update_interval;
/* private: internal use only */
struct timespec64 last_aggregation;
- struct timespec64 last_primitive_update;
+ struct timespec64 last_ops_update;
/* public: */
struct task_struct *kdamond;
struct mutex kdamond_lock;
- struct damon_primitive primitive;
+ struct damon_operations ops;
struct damon_callback callback;
unsigned long min_nr_regions;
@@ -392,14 +445,20 @@ struct damon_ctx {
struct list_head schemes;
};
-#define damon_next_region(r) \
- (container_of(r->list.next, struct damon_region, list))
+static inline struct damon_region *damon_next_region(struct damon_region *r)
+{
+ return container_of(r->list.next, struct damon_region, list);
+}
-#define damon_prev_region(r) \
- (container_of(r->list.prev, struct damon_region, list))
+static inline struct damon_region *damon_prev_region(struct damon_region *r)
+{
+ return container_of(r->list.prev, struct damon_region, list);
+}
-#define damon_last_region(t) \
- (list_last_entry(&t->regions_list, struct damon_region, list))
+static inline struct damon_region *damon_last_region(struct damon_target *t)
+{
+ return list_last_entry(&t->regions_list, struct damon_region, list);
+}
#define damon_for_each_region(r, t) \
list_for_each_entry(r, &t->regions_list, list)
@@ -422,11 +481,22 @@ struct damon_ctx {
#ifdef CONFIG_DAMON
struct damon_region *damon_new_region(unsigned long start, unsigned long end);
-inline void damon_insert_region(struct damon_region *r,
+
+/*
+ * Add a region between two other regions
+ */
+static inline void damon_insert_region(struct damon_region *r,
struct damon_region *prev, struct damon_region *next,
- struct damon_target *t);
+ struct damon_target *t)
+{
+ __list_add(&r->list, &prev->list, &next->list);
+ t->nr_regions++;
+}
+
void damon_add_region(struct damon_region *r, struct damon_target *t);
void damon_destroy_region(struct damon_region *r, struct damon_target *t);
+int damon_set_regions(struct damon_target *t, struct damon_addr_range *ranges,
+ unsigned int nr_ranges);
struct damos *damon_new_scheme(
unsigned long min_sz_region, unsigned long max_sz_region,
@@ -437,7 +507,7 @@ struct damos *damon_new_scheme(
void damon_add_scheme(struct damon_ctx *ctx, struct damos *s);
void damon_destroy_scheme(struct damos *s);
-struct damon_target *damon_new_target(unsigned long id);
+struct damon_target *damon_new_target(void);
void damon_add_target(struct damon_ctx *ctx, struct damon_target *t);
bool damon_targets_empty(struct damon_ctx *ctx);
void damon_free_target(struct damon_target *t);
@@ -446,49 +516,19 @@ unsigned int damon_nr_regions(struct damon_target *t);
struct damon_ctx *damon_new_ctx(void);
void damon_destroy_ctx(struct damon_ctx *ctx);
-int damon_set_targets(struct damon_ctx *ctx,
- unsigned long *ids, ssize_t nr_ids);
int damon_set_attrs(struct damon_ctx *ctx, unsigned long sample_int,
- unsigned long aggr_int, unsigned long primitive_upd_int,
+ unsigned long aggr_int, unsigned long ops_upd_int,
unsigned long min_nr_reg, unsigned long max_nr_reg);
int damon_set_schemes(struct damon_ctx *ctx,
struct damos **schemes, ssize_t nr_schemes);
int damon_nr_running_ctxs(void);
+bool damon_is_registered_ops(enum damon_ops_id id);
+int damon_register_ops(struct damon_operations *ops);
+int damon_select_ops(struct damon_ctx *ctx, enum damon_ops_id id);
-int damon_start(struct damon_ctx **ctxs, int nr_ctxs);
+int damon_start(struct damon_ctx **ctxs, int nr_ctxs, bool exclusive);
int damon_stop(struct damon_ctx **ctxs, int nr_ctxs);
#endif /* CONFIG_DAMON */
-#ifdef CONFIG_DAMON_VADDR
-
-/* Monitoring primitives for virtual memory address spaces */
-void damon_va_init(struct damon_ctx *ctx);
-void damon_va_update(struct damon_ctx *ctx);
-void damon_va_prepare_access_checks(struct damon_ctx *ctx);
-unsigned int damon_va_check_accesses(struct damon_ctx *ctx);
-bool damon_va_target_valid(void *t);
-void damon_va_cleanup(struct damon_ctx *ctx);
-int damon_va_apply_scheme(struct damon_ctx *context, struct damon_target *t,
- struct damon_region *r, struct damos *scheme);
-int damon_va_scheme_score(struct damon_ctx *context, struct damon_target *t,
- struct damon_region *r, struct damos *scheme);
-void damon_va_set_primitives(struct damon_ctx *ctx);
-
-#endif /* CONFIG_DAMON_VADDR */
-
-#ifdef CONFIG_DAMON_PADDR
-
-/* Monitoring primitives for the physical memory address space */
-void damon_pa_prepare_access_checks(struct damon_ctx *ctx);
-unsigned int damon_pa_check_accesses(struct damon_ctx *ctx);
-bool damon_pa_target_valid(void *t);
-int damon_pa_apply_scheme(struct damon_ctx *context, struct damon_target *t,
- struct damon_region *r, struct damos *scheme);
-int damon_pa_scheme_score(struct damon_ctx *context, struct damon_target *t,
- struct damon_region *r, struct damos *scheme);
-void damon_pa_set_primitives(struct damon_ctx *ctx);
-
-#endif /* CONFIG_DAMON_PADDR */
-
#endif /* _DAMON_H */
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 8623caa67388..e7b81634c52a 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -6,14 +6,19 @@
#include <linux/mm.h>
#include <linux/radix-tree.h>
-/* Flag for synchronous flush */
-#define DAXDEV_F_SYNC (1UL << 0)
-
typedef unsigned long dax_entry_t;
+struct dax_device;
+struct gendisk;
struct iomap_ops;
+struct iomap_iter;
struct iomap;
-struct dax_device;
+
+enum dax_access_mode {
+ DAX_ACCESS,
+ DAX_RECOVERY_WRITE,
+};
+
struct dax_operations {
/*
* direct_access: translate a device-relative
@@ -21,40 +26,33 @@ struct dax_operations {
* number of pages available for DAX at that pfn.
*/
long (*direct_access)(struct dax_device *, pgoff_t, long,
- void **, pfn_t *);
+ enum dax_access_mode, void **, pfn_t *);
/*
* Validate whether this device is usable as an fsdax backing
* device.
*/
bool (*dax_supported)(struct dax_device *, struct block_device *, int,
sector_t, sector_t);
- /* copy_from_iter: required operation for fs-dax direct-i/o */
- size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t,
- struct iov_iter *);
- /* copy_to_iter: required operation for fs-dax direct-i/o */
- size_t (*copy_to_iter)(struct dax_device *, pgoff_t, void *, size_t,
- struct iov_iter *);
/* zero_page_range: required operation. Zero page range */
int (*zero_page_range)(struct dax_device *, pgoff_t, size_t);
+ /*
+ * recovery_write: recover a poisoned range by DAX device driver
+ * capable of clearing poison.
+ */
+ size_t (*recovery_write)(struct dax_device *dax_dev, pgoff_t pgoff,
+ void *addr, size_t bytes, struct iov_iter *iter);
};
#if IS_ENABLED(CONFIG_DAX)
-struct dax_device *alloc_dax(void *private, const char *host,
- const struct dax_operations *ops, unsigned long flags);
+struct dax_device *alloc_dax(void *private, const struct dax_operations *ops);
void put_dax(struct dax_device *dax_dev);
void kill_dax(struct dax_device *dax_dev);
void dax_write_cache(struct dax_device *dax_dev, bool wc);
bool dax_write_cache_enabled(struct dax_device *dax_dev);
-bool __dax_synchronous(struct dax_device *dax_dev);
-static inline bool dax_synchronous(struct dax_device *dax_dev)
-{
- return __dax_synchronous(dax_dev);
-}
-void __set_dax_synchronous(struct dax_device *dax_dev);
-static inline void set_dax_synchronous(struct dax_device *dax_dev)
-{
- __set_dax_synchronous(dax_dev);
-}
+bool dax_synchronous(struct dax_device *dax_dev);
+void set_dax_synchronous(struct dax_device *dax_dev);
+size_t dax_recovery_write(struct dax_device *dax_dev, pgoff_t pgoff,
+ void *addr, size_t bytes, struct iov_iter *i);
/*
* Check if given mapping is supported by the file / underlying device.
*/
@@ -68,8 +66,8 @@ static inline bool daxdev_mapping_supported(struct vm_area_struct *vma,
return dax_synchronous(dax_dev);
}
#else
-static inline struct dax_device *alloc_dax(void *private, const char *host,
- const struct dax_operations *ops, unsigned long flags)
+static inline struct dax_device *alloc_dax(void *private,
+ const struct dax_operations *ops)
{
/*
* Callers should check IS_ENABLED(CONFIG_DAX) to know if this
@@ -102,50 +100,53 @@ static inline bool daxdev_mapping_supported(struct vm_area_struct *vma,
{
return !(vma->vm_flags & VM_SYNC);
}
+static inline size_t dax_recovery_write(struct dax_device *dax_dev,
+ pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i)
+{
+ return 0;
+}
#endif
-struct writeback_control;
-int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff);
-#if IS_ENABLED(CONFIG_FS_DAX)
-bool generic_fsdax_supported(struct dax_device *dax_dev,
- struct block_device *bdev, int blocksize, sector_t start,
- sector_t sectors);
-
-bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
- int blocksize, sector_t start, sector_t len);
+void set_dax_nocache(struct dax_device *dax_dev);
+void set_dax_nomc(struct dax_device *dax_dev);
+struct writeback_control;
+#if defined(CONFIG_BLOCK) && defined(CONFIG_FS_DAX)
+int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk);
+void dax_remove_host(struct gendisk *disk);
+struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev,
+ u64 *start_off);
static inline void fs_put_dax(struct dax_device *dax_dev)
{
put_dax(dax_dev);
}
-
-struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev);
-int dax_writeback_mapping_range(struct address_space *mapping,
- struct dax_device *dax_dev, struct writeback_control *wbc);
-
-struct page *dax_layout_busy_page(struct address_space *mapping);
-struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end);
-dax_entry_t dax_lock_page(struct page *page);
-void dax_unlock_page(struct page *page, dax_entry_t cookie);
#else
-#define generic_fsdax_supported NULL
-
-static inline bool dax_supported(struct dax_device *dax_dev,
- struct block_device *bdev, int blocksize, sector_t start,
- sector_t len)
+static inline int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk)
{
- return false;
+ return 0;
}
-
-static inline void fs_put_dax(struct dax_device *dax_dev)
+static inline void dax_remove_host(struct gendisk *disk)
{
}
-
-static inline struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev)
+static inline struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev,
+ u64 *start_off)
{
return NULL;
}
+static inline void fs_put_dax(struct dax_device *dax_dev)
+{
+}
+#endif /* CONFIG_BLOCK && CONFIG_FS_DAX */
+#if IS_ENABLED(CONFIG_FS_DAX)
+int dax_writeback_mapping_range(struct address_space *mapping,
+ struct dax_device *dax_dev, struct writeback_control *wbc);
+
+struct page *dax_layout_busy_page(struct address_space *mapping);
+struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end);
+dax_entry_t dax_lock_page(struct page *page);
+void dax_unlock_page(struct page *page, dax_entry_t cookie);
+#else
static inline struct page *dax_layout_busy_page(struct address_space *mapping)
{
return NULL;
@@ -174,6 +175,11 @@ static inline void dax_unlock_page(struct page *page, dax_entry_t cookie)
}
#endif
+int dax_zero_range(struct inode *inode, loff_t pos, loff_t len, bool *did_zero,
+ const struct iomap_ops *ops);
+int dax_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
+ const struct iomap_ops *ops);
+
#if IS_ENABLED(CONFIG_DAX)
int dax_read_lock(void);
void dax_read_unlock(int id);
@@ -190,7 +196,7 @@ static inline void dax_read_unlock(int id)
bool dax_alive(struct dax_device *dax_dev);
void *dax_get_private(struct dax_device *dax_dev);
long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
- void **kaddr, pfn_t *pfn);
+ enum dax_access_mode mode, void **kaddr, pfn_t *pfn);
size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
size_t bytes, struct iov_iter *i);
size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
@@ -208,7 +214,6 @@ vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf,
int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);
int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
pgoff_t index);
-s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap);
static inline bool dax_mapping(struct address_space *mapping)
{
return mapping->host && IS_DAX(mapping->host);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 9e23d33bb6f1..f5bba51480b2 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -61,16 +61,6 @@ extern const struct qstr empty_name;
extern const struct qstr slash_name;
extern const struct qstr dotdot_name;
-struct dentry_stat_t {
- long nr_dentry;
- long nr_unused;
- long age_limit; /* age in seconds */
- long want_pages; /* pages requested by system */
- long nr_negative; /* # of unused negative dentries */
- long dummy; /* Reserved for future use */
-};
-extern struct dentry_stat_t dentry_stat;
-
/*
* Try to keep struct dentry aligned on 64 byte cachelines (this will
* give reasonable cacheline footprint with larger lines without the
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index af7e6eb50283..58aea2d7385c 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -9,18 +9,9 @@
#include <uapi/linux/taskstats.h>
-/*
- * Per-task flags relevant to delay accounting
- * maintained privately to avoid exhausting similar flags in sched.h:PF_*
- * Used to set current->delays->flags
- */
-#define DELAYACCT_PF_SWAPIN 0x00000001 /* I am doing a swapin */
-#define DELAYACCT_PF_BLKIO 0x00000002 /* I am waiting on IO */
-
#ifdef CONFIG_TASK_DELAY_ACCT
struct task_delay_info {
raw_spinlock_t lock;
- unsigned int flags; /* Private per-task flags */
/* For each stat XXX, add following, aligned appropriately
*
@@ -37,13 +28,13 @@ struct task_delay_info {
* associated with the operation is added to XXX_delay.
* XXX_delay contains the accumulated delay time in nanoseconds.
*/
- u64 blkio_start; /* Shared by blkio, swapin */
+ u64 blkio_start;
u64 blkio_delay; /* wait for sync block io completion */
- u64 swapin_delay; /* wait for swapin block io completion */
+ u64 swapin_start;
+ u64 swapin_delay; /* wait for swapin */
u32 blkio_count; /* total count of the number of sync block */
/* io operations performed */
- u32 swapin_count; /* total count of the number of swapin block */
- /* io operations performed */
+ u32 swapin_count; /* total count of swapin */
u64 freepages_start;
u64 freepages_delay; /* wait for memory reclaim */
@@ -51,8 +42,16 @@ struct task_delay_info {
u64 thrashing_start;
u64 thrashing_delay; /* wait for thrashing page */
+ u64 compact_start;
+ u64 compact_delay; /* wait for memory compact */
+
+ u64 wpcopy_start;
+ u64 wpcopy_delay; /* wait for write-protect copy */
+
u32 freepages_count; /* total count of memory reclaim */
u32 thrashing_count; /* total count of thrash waits */
+ u32 compact_count; /* total count of memory compact */
+ u32 wpcopy_count; /* total count of write-protect copy */
};
#endif
@@ -66,9 +65,6 @@ extern int delayacct_on; /* Delay accounting turned on/off */
extern struct kmem_cache *delayacct_cache;
extern void delayacct_init(void);
-extern int sysctl_delayacct(struct ctl_table *table, int write, void *buffer,
- size_t *lenp, loff_t *ppos);
-
extern void __delayacct_tsk_init(struct task_struct *);
extern void __delayacct_tsk_exit(struct task_struct *);
extern void __delayacct_blkio_start(void);
@@ -79,26 +75,12 @@ extern void __delayacct_freepages_start(void);
extern void __delayacct_freepages_end(void);
extern void __delayacct_thrashing_start(void);
extern void __delayacct_thrashing_end(void);
-
-static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
-{
- if (p->delays)
- return (p->delays->flags & DELAYACCT_PF_BLKIO);
- else
- return 0;
-}
-
-static inline void delayacct_set_flag(struct task_struct *p, int flag)
-{
- if (p->delays)
- p->delays->flags |= flag;
-}
-
-static inline void delayacct_clear_flag(struct task_struct *p, int flag)
-{
- if (p->delays)
- p->delays->flags &= ~flag;
-}
+extern void __delayacct_swapin_start(void);
+extern void __delayacct_swapin_end(void);
+extern void __delayacct_compact_start(void);
+extern void __delayacct_compact_end(void);
+extern void __delayacct_wpcopy_start(void);
+extern void __delayacct_wpcopy_end(void);
static inline void delayacct_tsk_init(struct task_struct *tsk)
{
@@ -123,7 +105,6 @@ static inline void delayacct_blkio_start(void)
if (!static_branch_unlikely(&delayacct_key))
return;
- delayacct_set_flag(current, DELAYACCT_PF_BLKIO);
if (current->delays)
__delayacct_blkio_start();
}
@@ -135,7 +116,6 @@ static inline void delayacct_blkio_end(struct task_struct *p)
if (p->delays)
__delayacct_blkio_end(p);
- delayacct_clear_flag(p, DELAYACCT_PF_BLKIO);
}
static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
@@ -147,33 +127,95 @@ static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
static inline void delayacct_freepages_start(void)
{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
if (current->delays)
__delayacct_freepages_start();
}
static inline void delayacct_freepages_end(void)
{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
if (current->delays)
__delayacct_freepages_end();
}
static inline void delayacct_thrashing_start(void)
{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
if (current->delays)
__delayacct_thrashing_start();
}
static inline void delayacct_thrashing_end(void)
{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
if (current->delays)
__delayacct_thrashing_end();
}
+static inline void delayacct_swapin_start(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_swapin_start();
+}
+
+static inline void delayacct_swapin_end(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_swapin_end();
+}
+
+static inline void delayacct_compact_start(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_compact_start();
+}
+
+static inline void delayacct_compact_end(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_compact_end();
+}
+
+static inline void delayacct_wpcopy_start(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_wpcopy_start();
+}
+
+static inline void delayacct_wpcopy_end(void)
+{
+ if (!static_branch_unlikely(&delayacct_key))
+ return;
+
+ if (current->delays)
+ __delayacct_wpcopy_end();
+}
+
#else
-static inline void delayacct_set_flag(struct task_struct *p, int flag)
-{}
-static inline void delayacct_clear_flag(struct task_struct *p, int flag)
-{}
static inline void delayacct_init(void)
{}
static inline void delayacct_tsk_init(struct task_struct *tsk)
@@ -199,6 +241,18 @@ static inline void delayacct_thrashing_start(void)
{}
static inline void delayacct_thrashing_end(void)
{}
+static inline void delayacct_swapin_start(void)
+{}
+static inline void delayacct_swapin_end(void)
+{}
+static inline void delayacct_compact_start(void)
+{}
+static inline void delayacct_compact_end(void)
+{}
+static inline void delayacct_wpcopy_start(void)
+{}
+static inline void delayacct_wpcopy_end(void)
+{}
#endif /* CONFIG_TASK_DELAY_ACCT */
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 142474b4af96..dc10bee75a72 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -38,6 +38,7 @@ enum devfreq_timer {
struct devfreq;
struct devfreq_governor;
+struct devfreq_cpu_data;
struct thermal_cooling_device;
/**
@@ -288,6 +289,11 @@ struct devfreq_simple_ondemand_data {
#endif
#if IS_ENABLED(CONFIG_DEVFREQ_GOV_PASSIVE)
+enum devfreq_parent_dev_type {
+ DEVFREQ_PARENT_DEV,
+ CPUFREQ_PARENT_DEV,
+};
+
/**
* struct devfreq_passive_data - ``void *data`` fed to struct devfreq
* and devfreq_add_device
@@ -299,8 +305,11 @@ struct devfreq_simple_ondemand_data {
* using governors except for passive governor.
* If the devfreq device has the specific method to decide
* the next frequency, should use this callback.
- * @this: the devfreq instance of own device.
- * @nb: the notifier block for DEVFREQ_TRANSITION_NOTIFIER list
+ * @parent_type: the parent type of the device.
+ * @this: the devfreq instance of own device.
+ * @nb: the notifier block for DEVFREQ_TRANSITION_NOTIFIER or
+ * CPUFREQ_TRANSITION_NOTIFIER list.
+ * @cpu_data_list: the list of cpu frequency data for all cpufreq_policy.
*
* The devfreq_passive_data have to set the devfreq instance of parent
* device with governors except for the passive governor. But, don't need to
@@ -314,9 +323,13 @@ struct devfreq_passive_data {
/* Optional callback to decide the next frequency of passvice device */
int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
+ /* Should set the type of parent device */
+ enum devfreq_parent_dev_type parent_type;
+
/* For passive governor's internal use. Don't need to set them */
struct devfreq *this;
struct notifier_block nb;
+ struct list_head cpu_data_list;
};
#endif
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index a7df155ea49b..47a01c7cffdf 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -20,6 +20,7 @@ struct dm_table;
struct dm_report_zones_args;
struct mapped_device;
struct bio_vec;
+enum dax_access_mode;
/*
* Type of table, mapped_device's mempool and request_queue
@@ -146,12 +147,19 @@ typedef int (*dm_busy_fn) (struct dm_target *ti);
* >= 0 : the number of bytes accessible at the address
*/
typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff,
- long nr_pages, void **kaddr, pfn_t *pfn);
-typedef size_t (*dm_dax_copy_iter_fn)(struct dm_target *ti, pgoff_t pgoff,
- void *addr, size_t bytes, struct iov_iter *i);
+ long nr_pages, enum dax_access_mode node, void **kaddr,
+ pfn_t *pfn);
typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff,
size_t nr_pages);
+/*
+ * Returns:
+ * != 0 : number of bytes transferred
+ * 0 : recovery write failed
+ */
+typedef size_t (*dm_dax_recovery_write_fn)(struct dm_target *ti, pgoff_t pgoff,
+ void *addr, size_t bytes, struct iov_iter *i);
+
void dm_error(const char *message);
struct dm_dev {
@@ -200,9 +208,8 @@ struct target_type {
dm_iterate_devices_fn iterate_devices;
dm_io_hints_fn io_hints;
dm_dax_direct_access_fn direct_access;
- dm_dax_copy_iter_fn dax_copy_from_iter;
- dm_dax_copy_iter_fn dax_copy_to_iter;
dm_dax_zero_page_range_fn dax_zero_page_range;
+ dm_dax_recovery_write_fn dax_recovery_write;
/* For internal device-mapper use. */
struct list_head list;
@@ -321,12 +328,6 @@ struct dm_target {
unsigned num_secure_erase_bios;
/*
- * The number of WRITE SAME bios that will be submitted to the target.
- * The bio number can be accessed with dm_bio_get_target_bio_nr.
- */
- unsigned num_write_same_bios;
-
- /*
* The number of WRITE ZEROES bios that will be submitted to the target.
* The bio number can be accessed with dm_bio_get_target_bio_nr.
*/
@@ -362,10 +363,16 @@ struct dm_target {
bool limit_swap_bios:1;
/*
- * Set if this target implements a a zoned device and needs emulation of
+ * Set if this target implements a zoned device and needs emulation of
* zone append operations using regular writes.
*/
bool emulate_zone_append:1;
+
+ /*
+ * Set if the target will submit IO using dm_submit_bio_remap()
+ * after returning DM_MAPIO_SUBMITTED from its map function.
+ */
+ bool accounts_remapped_io:1;
};
void *dm_per_bio_data(struct bio *bio, size_t data_size);
@@ -469,6 +476,7 @@ int dm_suspended(struct dm_target *ti);
int dm_post_suspending(struct dm_target *ti);
int dm_noflush_suspending(struct dm_target *ti);
void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors);
+void dm_submit_bio_remap(struct bio *clone, struct bio *tgt_clone);
union map_info *dm_get_rq_mapinfo(struct request *rq);
#ifdef CONFIG_BLK_DEV_ZONED
diff --git a/include/linux/device.h b/include/linux/device.h
index e270cb740b9e..dc941997795c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -45,6 +45,7 @@ struct iommu_ops;
struct iommu_group;
struct dev_pin_info;
struct dev_iommu;
+struct msi_device_data;
/**
* struct subsys_interface - interfaces to device functions
@@ -372,6 +373,89 @@ struct dev_links_info {
};
/**
+ * struct dev_msi_info - Device data related to MSI
+ * @domain: The MSI interrupt domain associated to the device
+ * @data: Pointer to MSI device data
+ */
+struct dev_msi_info {
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+ struct irq_domain *domain;
+#endif
+#ifdef CONFIG_GENERIC_MSI_IRQ
+ struct msi_device_data *data;
+#endif
+};
+
+/**
+ * enum device_physical_location_panel - Describes which panel surface of the
+ * system's housing the device connection point resides on.
+ * @DEVICE_PANEL_TOP: Device connection point is on the top panel.
+ * @DEVICE_PANEL_BOTTOM: Device connection point is on the bottom panel.
+ * @DEVICE_PANEL_LEFT: Device connection point is on the left panel.
+ * @DEVICE_PANEL_RIGHT: Device connection point is on the right panel.
+ * @DEVICE_PANEL_FRONT: Device connection point is on the front panel.
+ * @DEVICE_PANEL_BACK: Device connection point is on the back panel.
+ * @DEVICE_PANEL_UNKNOWN: The panel with device connection point is unknown.
+ */
+enum device_physical_location_panel {
+ DEVICE_PANEL_TOP,
+ DEVICE_PANEL_BOTTOM,
+ DEVICE_PANEL_LEFT,
+ DEVICE_PANEL_RIGHT,
+ DEVICE_PANEL_FRONT,
+ DEVICE_PANEL_BACK,
+ DEVICE_PANEL_UNKNOWN,
+};
+
+/**
+ * enum device_physical_location_vertical_position - Describes vertical
+ * position of the device connection point on the panel surface.
+ * @DEVICE_VERT_POS_UPPER: Device connection point is at upper part of panel.
+ * @DEVICE_VERT_POS_CENTER: Device connection point is at center part of panel.
+ * @DEVICE_VERT_POS_LOWER: Device connection point is at lower part of panel.
+ */
+enum device_physical_location_vertical_position {
+ DEVICE_VERT_POS_UPPER,
+ DEVICE_VERT_POS_CENTER,
+ DEVICE_VERT_POS_LOWER,
+};
+
+/**
+ * enum device_physical_location_horizontal_position - Describes horizontal
+ * position of the device connection point on the panel surface.
+ * @DEVICE_HORI_POS_LEFT: Device connection point is at left part of panel.
+ * @DEVICE_HORI_POS_CENTER: Device connection point is at center part of panel.
+ * @DEVICE_HORI_POS_RIGHT: Device connection point is at right part of panel.
+ */
+enum device_physical_location_horizontal_position {
+ DEVICE_HORI_POS_LEFT,
+ DEVICE_HORI_POS_CENTER,
+ DEVICE_HORI_POS_RIGHT,
+};
+
+/**
+ * struct device_physical_location - Device data related to physical location
+ * of the device connection point.
+ * @panel: Panel surface of the system's housing that the device connection
+ * point resides on.
+ * @vertical_position: Vertical position of the device connection point within
+ * the panel.
+ * @horizontal_position: Horizontal position of the device connection point
+ * within the panel.
+ * @dock: Set if the device connection point resides in a docking station or
+ * port replicator.
+ * @lid: Set if this device connection point resides on the lid of laptop
+ * system.
+ */
+struct device_physical_location {
+ enum device_physical_location_panel panel;
+ enum device_physical_location_vertical_position vertical_position;
+ enum device_physical_location_horizontal_position horizontal_position;
+ bool dock;
+ bool lid;
+};
+
+/**
* struct device - The basic device structure
* @parent: The device's "parent" device, the device to which it is attached.
* In most cases, a parent device is some sort of bus or host
@@ -385,8 +469,6 @@ struct dev_links_info {
* This identifies the device type and carries type-specific
* information.
* @mutex: Mutex to synchronize calls to its driver.
- * @lockdep_mutex: An optional debug lock that a subsystem can use as a
- * peer lock to gain localized lockdep coverage of the device_lock.
* @bus: Type of bus device is on.
* @driver: Which driver has allocated this
* @platform_data: Platform data specific to the device.
@@ -407,9 +489,7 @@ struct dev_links_info {
* @em_pd: device's energy model performance domain
* @pins: For device pin management.
* See Documentation/driver-api/pin-control.rst for details.
- * @msi_lock: Lock to protect MSI mask cache and mask register
- * @msi_list: Hosts MSI descriptors
- * @msi_domain: The generic MSI domain this device is using.
+ * @msi: MSI related data
* @numa_node: NUMA node this device is close to.
* @dma_ops: DMA mapping operations for this device.
* @dma_mask: Dma mask (if dma'ble device).
@@ -440,6 +520,8 @@ struct dev_links_info {
* device (i.e. the bus driver that discovered the device).
* @iommu_group: IOMMU group the device belongs to.
* @iommu: Per device generic IOMMU runtime data
+ * @physical_location: Describes physical location of the device connection
+ * point in the system housing.
* @removable: Whether the device can be removed from the system. This
* should be set by the subsystem / bus driver that discovered
* the device.
@@ -486,9 +568,6 @@ struct device {
core doesn't touch it */
void *driver_data; /* Driver data, set and get with
dev_set_drvdata/dev_get_drvdata */
-#ifdef CONFIG_PROVE_LOCKING
- struct mutex lockdep_mutex;
-#endif
struct mutex mutex; /* mutex to synchronize calls to
* its driver.
*/
@@ -501,16 +580,10 @@ struct device {
struct em_perf_domain *em_pd;
#endif
-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
- struct irq_domain *msi_domain;
-#endif
#ifdef CONFIG_PINCTRL
struct dev_pin_info *pins;
#endif
-#ifdef CONFIG_GENERIC_MSI_IRQ
- raw_spinlock_t msi_lock;
- struct list_head msi_list;
-#endif
+ struct dev_msi_info msi;
#ifdef CONFIG_DMA_OPS
const struct dma_map_ops *dma_ops;
#endif
@@ -560,6 +633,8 @@ struct device {
struct iommu_group *iommu_group;
struct dev_iommu *iommu;
+ struct device_physical_location *physical_location;
+
enum device_removable removable;
bool offline_disabled:1;
@@ -668,7 +743,7 @@ static inline void set_dev_node(struct device *dev, int node)
static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
{
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
- return dev->msi_domain;
+ return dev->msi.domain;
#else
return NULL;
#endif
@@ -677,7 +752,7 @@ static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
{
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
- dev->msi_domain = d;
+ dev->msi.domain = d;
#endif
}
@@ -843,6 +918,49 @@ static inline bool device_supports_offline(struct device *dev)
return dev->bus && dev->bus->offline && dev->bus->online;
}
+#define __device_lock_set_class(dev, name, key) \
+do { \
+ struct device *__d2 __maybe_unused = dev; \
+ lock_set_class(&__d2->mutex.dep_map, name, key, 0, _THIS_IP_); \
+} while (0)
+
+/**
+ * device_lock_set_class - Specify a temporary lock class while a device
+ * is attached to a driver
+ * @dev: device to modify
+ * @key: lock class key data
+ *
+ * This must be called with the device_lock() already held, for example
+ * from driver ->probe(). Take care to only override the default
+ * lockdep_no_validate class.
+ */
+#ifdef CONFIG_LOCKDEP
+#define device_lock_set_class(dev, key) \
+do { \
+ struct device *__d = dev; \
+ dev_WARN_ONCE(__d, !lockdep_match_class(&__d->mutex, \
+ &__lockdep_no_validate__), \
+ "overriding existing custom lock class\n"); \
+ __device_lock_set_class(__d, #key, key); \
+} while (0)
+#else
+#define device_lock_set_class(dev, key) __device_lock_set_class(dev, #key, key)
+#endif
+
+/**
+ * device_lock_reset_class - Return a device to the default lockdep novalidate state
+ * @dev: device to modify
+ *
+ * This must be called with the device_lock() already held, for example
+ * from driver ->remove().
+ */
+#define device_lock_reset_class(dev) \
+do { \
+ struct device *__d __maybe_unused = dev; \
+ lock_set_novalidate_class(&__d->mutex.dep_map, "&dev->mutex", \
+ _THIS_IP_); \
+} while (0)
+
void lock_device_hotplug(void);
void unlock_device_hotplug(void);
int lock_device_hotplug_sysfs(void);
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index a039ab809753..d8b29ccd07e5 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -59,6 +59,8 @@ struct fwnode_handle;
* bus supports.
* @dma_configure: Called to setup DMA configuration on a device on
* this bus.
+ * @dma_cleanup: Called to cleanup DMA configuration on a device on
+ * this bus.
* @pm: Power management operations of this bus, callback the specific
* device driver's pm-ops.
* @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU
@@ -103,6 +105,7 @@ struct bus_type {
int (*num_vf)(struct device *dev);
int (*dma_configure)(struct device *dev);
+ void (*dma_cleanup)(struct device *dev);
const struct dev_pm_ops *pm;
diff --git a/include/linux/device/driver.h b/include/linux/device/driver.h
index 15e7c5e15d62..700453017e1c 100644
--- a/include/linux/device/driver.h
+++ b/include/linux/device/driver.h
@@ -151,6 +151,8 @@ extern int __must_check driver_create_file(struct device_driver *driver,
extern void driver_remove_file(struct device_driver *driver,
const struct driver_attribute *attr);
+int driver_set_override(struct device *dev, const char **override,
+ const char *s, size_t len);
extern int __must_check driver_for_each_device(struct device_driver *drv,
struct device *start,
void *data,
diff --git a/include/linux/dma-buf-map.h b/include/linux/dma-buf-map.h
deleted file mode 100644
index 278d489e4bdd..000000000000
--- a/include/linux/dma-buf-map.h
+++ /dev/null
@@ -1,266 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Pointer to dma-buf-mapped memory, plus helpers.
- */
-
-#ifndef __DMA_BUF_MAP_H__
-#define __DMA_BUF_MAP_H__
-
-#include <linux/io.h>
-#include <linux/string.h>
-
-/**
- * DOC: overview
- *
- * Calling dma-buf's vmap operation returns a pointer to the buffer's memory.
- * Depending on the location of the buffer, users may have to access it with
- * I/O operations or memory load/store operations. For example, copying to
- * system memory could be done with memcpy(), copying to I/O memory would be
- * done with memcpy_toio().
- *
- * .. code-block:: c
- *
- * void *vaddr = ...; // pointer to system memory
- * memcpy(vaddr, src, len);
- *
- * void *vaddr_iomem = ...; // pointer to I/O memory
- * memcpy_toio(vaddr, _iomem, src, len);
- *
- * When using dma-buf's vmap operation, the returned pointer is encoded as
- * :c:type:`struct dma_buf_map <dma_buf_map>`.
- * :c:type:`struct dma_buf_map <dma_buf_map>` stores the buffer's address in
- * system or I/O memory and a flag that signals the required method of
- * accessing the buffer. Use the returned instance and the helper functions
- * to access the buffer's memory in the correct way.
- *
- * The type :c:type:`struct dma_buf_map <dma_buf_map>` and its helpers are
- * actually independent from the dma-buf infrastructure. When sharing buffers
- * among devices, drivers have to know the location of the memory to access
- * the buffers in a safe way. :c:type:`struct dma_buf_map <dma_buf_map>`
- * solves this problem for dma-buf and its users. If other drivers or
- * sub-systems require similar functionality, the type could be generalized
- * and moved to a more prominent header file.
- *
- * Open-coding access to :c:type:`struct dma_buf_map <dma_buf_map>` is
- * considered bad style. Rather then accessing its fields directly, use one
- * of the provided helper functions, or implement your own. For example,
- * instances of :c:type:`struct dma_buf_map <dma_buf_map>` can be initialized
- * statically with DMA_BUF_MAP_INIT_VADDR(), or at runtime with
- * dma_buf_map_set_vaddr(). These helpers will set an address in system memory.
- *
- * .. code-block:: c
- *
- * struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(0xdeadbeaf);
- *
- * dma_buf_map_set_vaddr(&map. 0xdeadbeaf);
- *
- * To set an address in I/O memory, use dma_buf_map_set_vaddr_iomem().
- *
- * .. code-block:: c
- *
- * dma_buf_map_set_vaddr_iomem(&map. 0xdeadbeaf);
- *
- * Instances of struct dma_buf_map do not have to be cleaned up, but
- * can be cleared to NULL with dma_buf_map_clear(). Cleared mappings
- * always refer to system memory.
- *
- * .. code-block:: c
- *
- * dma_buf_map_clear(&map);
- *
- * Test if a mapping is valid with either dma_buf_map_is_set() or
- * dma_buf_map_is_null().
- *
- * .. code-block:: c
- *
- * if (dma_buf_map_is_set(&map) != dma_buf_map_is_null(&map))
- * // always true
- *
- * Instances of :c:type:`struct dma_buf_map <dma_buf_map>` can be compared
- * for equality with dma_buf_map_is_equal(). Mappings the point to different
- * memory spaces, system or I/O, are never equal. That's even true if both
- * spaces are located in the same address space, both mappings contain the
- * same address value, or both mappings refer to NULL.
- *
- * .. code-block:: c
- *
- * struct dma_buf_map sys_map; // refers to system memory
- * struct dma_buf_map io_map; // refers to I/O memory
- *
- * if (dma_buf_map_is_equal(&sys_map, &io_map))
- * // always false
- *
- * A set up instance of struct dma_buf_map can be used to access or manipulate
- * the buffer memory. Depending on the location of the memory, the provided
- * helpers will pick the correct operations. Data can be copied into the memory
- * with dma_buf_map_memcpy_to(). The address can be manipulated with
- * dma_buf_map_incr().
- *
- * .. code-block:: c
- *
- * const void *src = ...; // source buffer
- * size_t len = ...; // length of src
- *
- * dma_buf_map_memcpy_to(&map, src, len);
- * dma_buf_map_incr(&map, len); // go to first byte after the memcpy
- */
-
-/**
- * struct dma_buf_map - Pointer to vmap'ed dma-buf memory.
- * @vaddr_iomem: The buffer's address if in I/O memory
- * @vaddr: The buffer's address if in system memory
- * @is_iomem: True if the dma-buf memory is located in I/O
- * memory, or false otherwise.
- */
-struct dma_buf_map {
- union {
- void __iomem *vaddr_iomem;
- void *vaddr;
- };
- bool is_iomem;
-};
-
-/**
- * DMA_BUF_MAP_INIT_VADDR - Initializes struct dma_buf_map to an address in system memory
- * @vaddr_: A system-memory address
- */
-#define DMA_BUF_MAP_INIT_VADDR(vaddr_) \
- { \
- .vaddr = (vaddr_), \
- .is_iomem = false, \
- }
-
-/**
- * dma_buf_map_set_vaddr - Sets a dma-buf mapping structure to an address in system memory
- * @map: The dma-buf mapping structure
- * @vaddr: A system-memory address
- *
- * Sets the address and clears the I/O-memory flag.
- */
-static inline void dma_buf_map_set_vaddr(struct dma_buf_map *map, void *vaddr)
-{
- map->vaddr = vaddr;
- map->is_iomem = false;
-}
-
-/**
- * dma_buf_map_set_vaddr_iomem - Sets a dma-buf mapping structure to an address in I/O memory
- * @map: The dma-buf mapping structure
- * @vaddr_iomem: An I/O-memory address
- *
- * Sets the address and the I/O-memory flag.
- */
-static inline void dma_buf_map_set_vaddr_iomem(struct dma_buf_map *map,
- void __iomem *vaddr_iomem)
-{
- map->vaddr_iomem = vaddr_iomem;
- map->is_iomem = true;
-}
-
-/**
- * dma_buf_map_is_equal - Compares two dma-buf mapping structures for equality
- * @lhs: The dma-buf mapping structure
- * @rhs: A dma-buf mapping structure to compare with
- *
- * Two dma-buf mapping structures are equal if they both refer to the same type of memory
- * and to the same address within that memory.
- *
- * Returns:
- * True is both structures are equal, or false otherwise.
- */
-static inline bool dma_buf_map_is_equal(const struct dma_buf_map *lhs,
- const struct dma_buf_map *rhs)
-{
- if (lhs->is_iomem != rhs->is_iomem)
- return false;
- else if (lhs->is_iomem)
- return lhs->vaddr_iomem == rhs->vaddr_iomem;
- else
- return lhs->vaddr == rhs->vaddr;
-}
-
-/**
- * dma_buf_map_is_null - Tests for a dma-buf mapping to be NULL
- * @map: The dma-buf mapping structure
- *
- * Depending on the state of struct dma_buf_map.is_iomem, tests if the
- * mapping is NULL.
- *
- * Returns:
- * True if the mapping is NULL, or false otherwise.
- */
-static inline bool dma_buf_map_is_null(const struct dma_buf_map *map)
-{
- if (map->is_iomem)
- return !map->vaddr_iomem;
- return !map->vaddr;
-}
-
-/**
- * dma_buf_map_is_set - Tests is the dma-buf mapping has been set
- * @map: The dma-buf mapping structure
- *
- * Depending on the state of struct dma_buf_map.is_iomem, tests if the
- * mapping has been set.
- *
- * Returns:
- * True if the mapping is been set, or false otherwise.
- */
-static inline bool dma_buf_map_is_set(const struct dma_buf_map *map)
-{
- return !dma_buf_map_is_null(map);
-}
-
-/**
- * dma_buf_map_clear - Clears a dma-buf mapping structure
- * @map: The dma-buf mapping structure
- *
- * Clears all fields to zero; including struct dma_buf_map.is_iomem. So
- * mapping structures that were set to point to I/O memory are reset for
- * system memory. Pointers are cleared to NULL. This is the default.
- */
-static inline void dma_buf_map_clear(struct dma_buf_map *map)
-{
- if (map->is_iomem) {
- map->vaddr_iomem = NULL;
- map->is_iomem = false;
- } else {
- map->vaddr = NULL;
- }
-}
-
-/**
- * dma_buf_map_memcpy_to - Memcpy into dma-buf mapping
- * @dst: The dma-buf mapping structure
- * @src: The source buffer
- * @len: The number of byte in src
- *
- * Copies data into a dma-buf mapping. The source buffer is in system
- * memory. Depending on the buffer's location, the helper picks the correct
- * method of accessing the memory.
- */
-static inline void dma_buf_map_memcpy_to(struct dma_buf_map *dst, const void *src, size_t len)
-{
- if (dst->is_iomem)
- memcpy_toio(dst->vaddr_iomem, src, len);
- else
- memcpy(dst->vaddr, src, len);
-}
-
-/**
- * dma_buf_map_incr - Increments the address stored in a dma-buf mapping
- * @map: The dma-buf mapping structure
- * @incr: The number of bytes to increment
- *
- * Increments the address stored in a dma-buf mapping. Depending on the
- * buffer's location, the correct value will be updated.
- */
-static inline void dma_buf_map_incr(struct dma_buf_map *map, size_t incr)
-{
- if (map->is_iomem)
- map->vaddr_iomem += incr;
- else
- map->vaddr += incr;
-}
-
-#endif /* __DMA_BUF_MAP_H__ */
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 7ab50076e7a6..71731796c8c3 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -13,7 +13,7 @@
#ifndef __DMA_BUF_H__
#define __DMA_BUF_H__
-#include <linux/dma-buf-map.h>
+#include <linux/iosys-map.h>
#include <linux/file.h>
#include <linux/err.h>
#include <linux/scatterlist.h>
@@ -283,8 +283,8 @@ struct dma_buf_ops {
*/
int (*mmap)(struct dma_buf *, struct vm_area_struct *vma);
- int (*vmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
- void (*vunmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
+ int (*vmap)(struct dma_buf *dmabuf, struct iosys_map *map);
+ void (*vunmap)(struct dma_buf *dmabuf, struct iosys_map *map);
};
/**
@@ -347,7 +347,7 @@ struct dma_buf {
* @vmap_ptr:
* The current vmap ptr if @vmapping_counter > 0. Protected by @lock.
*/
- struct dma_buf_map vmap_ptr;
+ struct iosys_map vmap_ptr;
/**
* @exp_name:
@@ -393,27 +393,30 @@ struct dma_buf {
* e.g. exposed in `Implicit Fence Poll Support`_ must follow the
* below rules.
*
- * - Drivers must add a shared fence through dma_resv_add_shared_fence()
- * for anything the userspace API considers a read access. This highly
- * depends upon the API and window system.
+ * - Drivers must add a read fence through dma_resv_add_fence() with the
+ * DMA_RESV_USAGE_READ flag for anything the userspace API considers a
+ * read access. This highly depends upon the API and window system.
*
- * - Similarly drivers must set the exclusive fence through
- * dma_resv_add_excl_fence() for anything the userspace API considers
- * write access.
+ * - Similarly drivers must add a write fence through
+ * dma_resv_add_fence() with the DMA_RESV_USAGE_WRITE flag for
+ * anything the userspace API considers write access.
*
- * - Drivers may just always set the exclusive fence, since that only
+ * - Drivers may just always add a write fence, since that only
* causes unecessarily synchronization, but no correctness issues.
*
* - Some drivers only expose a synchronous userspace API with no
* pipelining across drivers. These do not set any fences for their
* access. An example here is v4l.
*
+ * - Driver should use dma_resv_usage_rw() when retrieving fences as
+ * dependency for implicit synchronization.
+ *
* DYNAMIC IMPORTER RULES:
*
* Dynamic importers, see dma_buf_attachment_is_dynamic(), have
* additional constraints on how they set up fences:
*
- * - Dynamic importers must obey the exclusive fence and wait for it to
+ * - Dynamic importers must obey the write fences and wait for them to
* signal before allowing access to the buffer's underlying storage
* through the device.
*
@@ -423,10 +426,9 @@ struct dma_buf {
*
* IMPORTANT:
*
- * All drivers must obey the struct dma_resv rules, specifically the
- * rules for updating fences, see &dma_resv.fence_excl and
- * &dma_resv.fence. If these dependency rules are broken access tracking
- * can be lost resulting in use after free issues.
+ * All drivers and memory management related functions must obey the
+ * struct dma_resv rules, specifically the rules for updating and
+ * obeying fences. See enum dma_resv_usage for further descriptions.
*/
struct dma_resv *resv;
@@ -628,6 +630,6 @@ int dma_buf_end_cpu_access(struct dma_buf *dma_buf,
int dma_buf_mmap(struct dma_buf *, struct vm_area_struct *,
unsigned long);
-int dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
-void dma_buf_vunmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
+int dma_buf_vmap(struct dma_buf *dmabuf, struct iosys_map *map);
+void dma_buf_vunmap(struct dma_buf *dmabuf, struct iosys_map *map);
#endif /* __DMA_BUF_H__ */
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
index 303dd712220f..ec7f25def392 100644
--- a/include/linux/dma-fence-array.h
+++ b/include/linux/dma-fence-array.h
@@ -45,19 +45,6 @@ struct dma_fence_array {
struct irq_work work;
};
-extern const struct dma_fence_ops dma_fence_array_ops;
-
-/**
- * dma_fence_is_array - check if a fence is from the array subsclass
- * @fence: fence to test
- *
- * Return true if it is a dma_fence_array and false otherwise.
- */
-static inline bool dma_fence_is_array(struct dma_fence *fence)
-{
- return fence->ops == &dma_fence_array_ops;
-}
-
/**
* to_dma_fence_array - cast a fence to a dma_fence_array
* @fence: fence to cast to a dma_fence_array
@@ -68,12 +55,27 @@ static inline bool dma_fence_is_array(struct dma_fence *fence)
static inline struct dma_fence_array *
to_dma_fence_array(struct dma_fence *fence)
{
- if (fence->ops != &dma_fence_array_ops)
+ if (!fence || !dma_fence_is_array(fence))
return NULL;
return container_of(fence, struct dma_fence_array, base);
}
+/**
+ * dma_fence_array_for_each - iterate over all fences in array
+ * @fence: current fence
+ * @index: index into the array
+ * @head: potential dma_fence_array object
+ *
+ * Test if @array is a dma_fence_array object and if yes iterate over all fences
+ * in the array. If not just iterate over the fence in @array itself.
+ *
+ * For a deep dive iterator see dma_fence_unwrap_for_each().
+ */
+#define dma_fence_array_for_each(fence, index, head) \
+ for (index = 0, fence = dma_fence_array_first(head); fence; \
+ ++(index), fence = dma_fence_array_next(head, index))
+
struct dma_fence_array *dma_fence_array_create(int num_fences,
struct dma_fence **fences,
u64 context, unsigned seqno,
@@ -81,4 +83,8 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
bool dma_fence_match_context(struct dma_fence *fence, u64 context);
+struct dma_fence *dma_fence_array_first(struct dma_fence *head);
+struct dma_fence *dma_fence_array_next(struct dma_fence *head,
+ unsigned int index);
+
#endif /* __LINUX_DMA_FENCE_ARRAY_H */
diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h
index 54fe3443fd2c..4bdf0b96da28 100644
--- a/include/linux/dma-fence-chain.h
+++ b/include/linux/dma-fence-chain.h
@@ -49,7 +49,6 @@ struct dma_fence_chain {
spinlock_t lock;
};
-extern const struct dma_fence_ops dma_fence_chain_ops;
/**
* to_dma_fence_chain - cast a fence to a dma_fence_chain
@@ -61,13 +60,28 @@ extern const struct dma_fence_ops dma_fence_chain_ops;
static inline struct dma_fence_chain *
to_dma_fence_chain(struct dma_fence *fence)
{
- if (!fence || fence->ops != &dma_fence_chain_ops)
+ if (!fence || !dma_fence_is_chain(fence))
return NULL;
return container_of(fence, struct dma_fence_chain, base);
}
/**
+ * dma_fence_chain_contained - return the contained fence
+ * @fence: the fence to test
+ *
+ * If the fence is a dma_fence_chain the function returns the fence contained
+ * inside the chain object, otherwise it returns the fence itself.
+ */
+static inline struct dma_fence *
+dma_fence_chain_contained(struct dma_fence *fence)
+{
+ struct dma_fence_chain *chain = to_dma_fence_chain(fence);
+
+ return chain ? chain->fence : fence;
+}
+
+/**
* dma_fence_chain_alloc
*
* Returns a new struct dma_fence_chain object or NULL on failure.
@@ -98,6 +112,8 @@ static inline void dma_fence_chain_free(struct dma_fence_chain *chain)
*
* Iterate over all fences in the chain. We keep a reference to the current
* fence while inside the loop which must be dropped when breaking out.
+ *
+ * For a deep dive iterator see dma_fence_unwrap_for_each().
*/
#define dma_fence_chain_for_each(iter, head) \
for (iter = dma_fence_get(head); iter; \
diff --git a/include/linux/dma-fence-unwrap.h b/include/linux/dma-fence-unwrap.h
new file mode 100644
index 000000000000..77e335a1bcac
--- /dev/null
+++ b/include/linux/dma-fence-unwrap.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * fence-chain: chain fences together in a timeline
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ * Authors:
+ * Christian K├Ânig <christian.koenig@amd.com>
+ */
+
+#ifndef __LINUX_DMA_FENCE_UNWRAP_H
+#define __LINUX_DMA_FENCE_UNWRAP_H
+
+#include <linux/dma-fence-chain.h>
+#include <linux/dma-fence-array.h>
+
+/**
+ * struct dma_fence_unwrap - cursor into the container structure
+ *
+ * Should be used with dma_fence_unwrap_for_each() iterator macro.
+ */
+struct dma_fence_unwrap {
+ /**
+ * @chain: potential dma_fence_chain, but can be other fence as well
+ */
+ struct dma_fence *chain;
+ /**
+ * @array: potential dma_fence_array, but can be other fence as well
+ */
+ struct dma_fence *array;
+ /**
+ * @index: last returned index if @array is really a dma_fence_array
+ */
+ unsigned int index;
+};
+
+/* Internal helper to start new array iteration, don't use directly */
+static inline struct dma_fence *
+__dma_fence_unwrap_array(struct dma_fence_unwrap * cursor)
+{
+ cursor->array = dma_fence_chain_contained(cursor->chain);
+ cursor->index = 0;
+ return dma_fence_array_first(cursor->array);
+}
+
+/**
+ * dma_fence_unwrap_first - return the first fence from fence containers
+ * @head: the entrypoint into the containers
+ * @cursor: current position inside the containers
+ *
+ * Unwraps potential dma_fence_chain/dma_fence_array containers and return the
+ * first fence.
+ */
+static inline struct dma_fence *
+dma_fence_unwrap_first(struct dma_fence *head, struct dma_fence_unwrap *cursor)
+{
+ cursor->chain = dma_fence_get(head);
+ return __dma_fence_unwrap_array(cursor);
+}
+
+/**
+ * dma_fence_unwrap_next - return the next fence from a fence containers
+ * @cursor: current position inside the containers
+ *
+ * Continue unwrapping the dma_fence_chain/dma_fence_array containers and return
+ * the next fence from them.
+ */
+static inline struct dma_fence *
+dma_fence_unwrap_next(struct dma_fence_unwrap *cursor)
+{
+ struct dma_fence *tmp;
+
+ ++cursor->index;
+ tmp = dma_fence_array_next(cursor->array, cursor->index);
+ if (tmp)
+ return tmp;
+
+ cursor->chain = dma_fence_chain_walk(cursor->chain);
+ return __dma_fence_unwrap_array(cursor);
+}
+
+/**
+ * dma_fence_unwrap_for_each - iterate over all fences in containers
+ * @fence: current fence
+ * @cursor: current position inside the containers
+ * @head: starting point for the iterator
+ *
+ * Unwrap dma_fence_chain and dma_fence_array containers and deep dive into all
+ * potential fences in them. If @head is just a normal fence only that one is
+ * returned.
+ */
+#define dma_fence_unwrap_for_each(fence, cursor, head) \
+ for (fence = dma_fence_unwrap_first(head, cursor); fence; \
+ fence = dma_fence_unwrap_next(cursor))
+
+#endif
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index 1ea691753bd3..775cdc0b4f24 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -587,4 +587,42 @@ struct dma_fence *dma_fence_get_stub(void);
struct dma_fence *dma_fence_allocate_private_stub(void);
u64 dma_fence_context_alloc(unsigned num);
+extern const struct dma_fence_ops dma_fence_array_ops;
+extern const struct dma_fence_ops dma_fence_chain_ops;
+
+/**
+ * dma_fence_is_array - check if a fence is from the array subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_array and false otherwise.
+ */
+static inline bool dma_fence_is_array(struct dma_fence *fence)
+{
+ return fence->ops == &dma_fence_array_ops;
+}
+
+/**
+ * dma_fence_is_chain - check if a fence is from the chain subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_chain and false otherwise.
+ */
+static inline bool dma_fence_is_chain(struct dma_fence *fence)
+{
+ return fence->ops == &dma_fence_chain_ops;
+}
+
+/**
+ * dma_fence_is_container - check if a fence is a container for other fences
+ * @fence: the fence to test
+ *
+ * Return true if this fence is a container for other fences, false otherwise.
+ * This is important since we can't build up large fence structure or otherwise
+ * we run into recursion during operation on those fences.
+ */
+static inline bool dma_fence_is_container(struct dma_fence *fence)
+{
+ return dma_fence_is_array(fence) || dma_fence_is_chain(fence);
+}
+
#endif /* __LINUX_DMA_FENCE_H */
diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h
index eebf04325b34..c8ccbc94d5d2 100644
--- a/include/linux/dma-resv.h
+++ b/include/linux/dma-resv.h
@@ -47,24 +47,89 @@
extern struct ww_class reservation_ww_class;
+struct dma_resv_list;
+
/**
- * struct dma_resv_list - a list of shared fences
- * @rcu: for internal use
- * @shared_count: table of shared fences
- * @shared_max: for growing shared fence table
- * @shared: shared fence table
+ * enum dma_resv_usage - how the fences from a dma_resv obj are used
+ *
+ * This enum describes the different use cases for a dma_resv object and
+ * controls which fences are returned when queried.
+ *
+ * An important fact is that there is the order KERNEL<WRITE<READ<BOOKKEEP and
+ * when the dma_resv object is asked for fences for one use case the fences
+ * for the lower use case are returned as well.
+ *
+ * For example when asking for WRITE fences then the KERNEL fences are returned
+ * as well. Similar when asked for READ fences then both WRITE and KERNEL
+ * fences are returned as well.
*/
-struct dma_resv_list {
- struct rcu_head rcu;
- u32 shared_count, shared_max;
- struct dma_fence __rcu *shared[];
+enum dma_resv_usage {
+ /**
+ * @DMA_RESV_USAGE_KERNEL: For in kernel memory management only.
+ *
+ * This should only be used for things like copying or clearing memory
+ * with a DMA hardware engine for the purpose of kernel memory
+ * management.
+ *
+ * Drivers *always* must wait for those fences before accessing the
+ * resource protected by the dma_resv object. The only exception for
+ * that is when the resource is known to be locked down in place by
+ * pinning it previously.
+ */
+ DMA_RESV_USAGE_KERNEL,
+
+ /**
+ * @DMA_RESV_USAGE_WRITE: Implicit write synchronization.
+ *
+ * This should only be used for userspace command submissions which add
+ * an implicit write dependency.
+ */
+ DMA_RESV_USAGE_WRITE,
+
+ /**
+ * @DMA_RESV_USAGE_READ: Implicit read synchronization.
+ *
+ * This should only be used for userspace command submissions which add
+ * an implicit read dependency.
+ */
+ DMA_RESV_USAGE_READ,
+
+ /**
+ * @DMA_RESV_USAGE_BOOKKEEP: No implicit sync.
+ *
+ * This should be used by submissions which don't want to participate in
+ * implicit synchronization.
+ *
+ * The most common case are preemption fences as well as page table
+ * updates and their TLB flushes.
+ */
+ DMA_RESV_USAGE_BOOKKEEP
};
/**
+ * dma_resv_usage_rw - helper for implicit sync
+ * @write: true if we create a new implicit sync write
+ *
+ * This returns the implicit synchronization usage for write or read accesses,
+ * see enum dma_resv_usage and &dma_buf.resv.
+ */
+static inline enum dma_resv_usage dma_resv_usage_rw(bool write)
+{
+ /* This looks confusing at first sight, but is indeed correct.
+ *
+ * The rational is that new write operations needs to wait for the
+ * existing read and write operations to finish.
+ * But a new read operation only needs to wait for the existing write
+ * operations to finish.
+ */
+ return write ? DMA_RESV_USAGE_READ : DMA_RESV_USAGE_WRITE;
+}
+
+/**
* struct dma_resv - a reservation object manages fences for a buffer
*
- * There are multiple uses for this, with sometimes slightly different rules in
- * how the fence slots are used.
+ * This is a container for dma_fence objects which needs to handle multiple use
+ * cases.
*
* One use is to synchronize cross-driver access to a struct dma_buf, either for
* dynamic buffer management or just to handle implicit synchronization between
@@ -91,81 +156,42 @@ struct dma_resv {
struct ww_mutex lock;
/**
- * @seq:
+ * @fences:
*
- * Sequence count for managing RCU read-side synchronization, allows
- * read-only access to @fence_excl and @fence while ensuring we take a
- * consistent snapshot.
- */
- seqcount_ww_mutex_t seq;
-
- /**
- * @fence_excl:
- *
- * The exclusive fence, if there is one currently.
- *
- * There are two ways to update this fence:
- *
- * - First by calling dma_resv_add_excl_fence(), which replaces all
- * fences attached to the reservation object. To guarantee that no
- * fences are lost, this new fence must signal only after all previous
- * fences, both shared and exclusive, have signalled. In some cases it
- * is convenient to achieve that by attaching a struct dma_fence_array
- * with all the new and old fences.
+ * Array of fences which where added to the dma_resv object
*
- * - Alternatively the fence can be set directly, which leaves the
- * shared fences unchanged. To guarantee that no fences are lost, this
- * new fence must signal only after the previous exclusive fence has
- * signalled. Since the shared fences are staying intact, it is not
- * necessary to maintain any ordering against those. If semantically
- * only a new access is added without actually treating the previous
- * one as a dependency the exclusive fences can be strung together
- * using struct dma_fence_chain.
- *
- * Note that actual semantics of what an exclusive or shared fence mean
- * is defined by the user, for reservation objects shared across drivers
- * see &dma_buf.resv.
- */
- struct dma_fence __rcu *fence_excl;
-
- /**
- * @fence:
- *
- * List of current shared fences.
- *
- * There are no ordering constraints of shared fences against the
- * exclusive fence slot. If a waiter needs to wait for all access, it
- * has to wait for both sets of fences to signal.
- *
- * A new fence is added by calling dma_resv_add_shared_fence(). Since
- * this often needs to be done past the point of no return in command
+ * A new fence is added by calling dma_resv_add_fence(). Since this
+ * often needs to be done past the point of no return in command
* submission it cannot fail, and therefore sufficient slots need to be
- * reserved by calling dma_resv_reserve_shared().
- *
- * Note that actual semantics of what an exclusive or shared fence mean
- * is defined by the user, for reservation objects shared across drivers
- * see &dma_buf.resv.
+ * reserved by calling dma_resv_reserve_fences().
*/
- struct dma_resv_list __rcu *fence;
+ struct dma_resv_list __rcu *fences;
};
/**
* struct dma_resv_iter - current position into the dma_resv fences
*
* Don't touch this directly in the driver, use the accessor function instead.
+ *
+ * IMPORTANT
+ *
+ * When using the lockless iterators like dma_resv_iter_next_unlocked() or
+ * dma_resv_for_each_fence_unlocked() beware that the iterator can be restarted.
+ * Code which accumulates statistics or similar needs to check for this with
+ * dma_resv_iter_is_restarted().
*/
struct dma_resv_iter {
/** @obj: The dma_resv object we iterate over */
struct dma_resv *obj;
- /** @all_fences: If all fences should be returned */
- bool all_fences;
+ /** @usage: Return fences with this usage or lower. */
+ enum dma_resv_usage usage;
/** @fence: the currently handled fence */
struct dma_fence *fence;
- /** @seq: sequence number to check for modifications */
- unsigned int seq;
+ /** @fence_usage: the usage of the current fence */
+ enum dma_resv_usage fence_usage;
/** @index: index into the shared fences */
unsigned int index;
@@ -173,8 +199,8 @@ struct dma_resv_iter {
/** @fences: the shared fences; private, *MUST* not dereference */
struct dma_resv_list *fences;
- /** @shared_count: number of shared fences */
- unsigned int shared_count;
+ /** @num_fences: number of fences */
+ unsigned int num_fences;
/** @is_restarted: true if this is the first returned fence */
bool is_restarted;
@@ -189,14 +215,14 @@ struct dma_fence *dma_resv_iter_next(struct dma_resv_iter *cursor);
* dma_resv_iter_begin - initialize a dma_resv_iter object
* @cursor: The dma_resv_iter object to initialize
* @obj: The dma_resv object which we want to iterate over
- * @all_fences: If all fences should be returned or just the exclusive one
+ * @usage: controls which fences to include, see enum dma_resv_usage.
*/
static inline void dma_resv_iter_begin(struct dma_resv_iter *cursor,
struct dma_resv *obj,
- bool all_fences)
+ enum dma_resv_usage usage)
{
cursor->obj = obj;
- cursor->all_fences = all_fences;
+ cursor->usage = usage;
cursor->fence = NULL;
}
@@ -213,14 +239,15 @@ static inline void dma_resv_iter_end(struct dma_resv_iter *cursor)
}
/**
- * dma_resv_iter_is_exclusive - test if the current fence is the exclusive one
+ * dma_resv_iter_usage - Return the usage of the current fence
* @cursor: the cursor of the current position
*
- * Returns true if the currently returned fence is the exclusive one.
+ * Returns the usage of the currently processed fence.
*/
-static inline bool dma_resv_iter_is_exclusive(struct dma_resv_iter *cursor)
+static inline enum dma_resv_usage
+dma_resv_iter_usage(struct dma_resv_iter *cursor)
{
- return cursor->index == 0;
+ return cursor->fence_usage;
}
/**
@@ -243,7 +270,11 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
* &dma_resv.lock and using RCU instead. The cursor needs to be initialized
* with dma_resv_iter_begin() and cleaned up with dma_resv_iter_end(). Inside
* the iterator a reference to the dma_fence is held and the RCU lock dropped.
- * When the dma_resv is modified the iteration starts over again.
+ *
+ * Beware that the iterator can be restarted when the struct dma_resv for
+ * @cursor is modified. Code which accumulates statistics or similar needs to
+ * check for this with dma_resv_iter_is_restarted(). For this reason prefer the
+ * lock iterator dma_resv_for_each_fence() whenever possible.
*/
#define dma_resv_for_each_fence_unlocked(cursor, fence) \
for (fence = dma_resv_iter_first_unlocked(cursor); \
@@ -253,7 +284,7 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
* dma_resv_for_each_fence - fence iterator
* @cursor: a struct dma_resv_iter pointer
* @obj: a dma_resv object pointer
- * @all_fences: true if all fences should be returned
+ * @usage: controls which fences to return
* @fence: the current fence
*
* Iterate over the fences in a struct dma_resv object while holding the
@@ -262,8 +293,8 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
* valid as long as the lock is held and so no extra reference to the fence is
* taken.
*/
-#define dma_resv_for_each_fence(cursor, obj, all_fences, fence) \
- for (dma_resv_iter_begin(cursor, obj, all_fences), \
+#define dma_resv_for_each_fence(cursor, obj, usage, fence) \
+ for (dma_resv_iter_begin(cursor, obj, usage), \
fence = dma_resv_iter_first(cursor); fence; \
fence = dma_resv_iter_next(cursor))
@@ -271,9 +302,9 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
#define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)
#ifdef CONFIG_DEBUG_MUTEXES
-void dma_resv_reset_shared_max(struct dma_resv *obj);
+void dma_resv_reset_max_fences(struct dma_resv *obj);
#else
-static inline void dma_resv_reset_shared_max(struct dma_resv *obj) {}
+static inline void dma_resv_reset_max_fences(struct dma_resv *obj) {}
#endif
/**
@@ -419,51 +450,26 @@ static inline struct ww_acquire_ctx *dma_resv_locking_ctx(struct dma_resv *obj)
*/
static inline void dma_resv_unlock(struct dma_resv *obj)
{
- dma_resv_reset_shared_max(obj);
+ dma_resv_reset_max_fences(obj);
ww_mutex_unlock(&obj->lock);
}
-/**
- * dma_resv_excl_fence - return the object's exclusive fence
- * @obj: the reservation object
- *
- * Returns the exclusive fence (if any). Caller must either hold the objects
- * through dma_resv_lock() or the RCU read side lock through rcu_read_lock(),
- * or one of the variants of each
- *
- * RETURNS
- * The exclusive fence or NULL
- */
-static inline struct dma_fence *
-dma_resv_excl_fence(struct dma_resv *obj)
-{
- return rcu_dereference_check(obj->fence_excl, dma_resv_held(obj));
-}
-
-/**
- * dma_resv_shared_list - get the reservation object's shared fence list
- * @obj: the reservation object
- *
- * Returns the shared fence list. Caller must either hold the objects
- * through dma_resv_lock() or the RCU read side lock through rcu_read_lock(),
- * or one of the variants of each
- */
-static inline struct dma_resv_list *dma_resv_shared_list(struct dma_resv *obj)
-{
- return rcu_dereference_check(obj->fence, dma_resv_held(obj));
-}
-
void dma_resv_init(struct dma_resv *obj);
void dma_resv_fini(struct dma_resv *obj);
-int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences);
-void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence);
-void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence);
-int dma_resv_get_fences(struct dma_resv *obj, struct dma_fence **pfence_excl,
- unsigned *pshared_count, struct dma_fence ***pshared);
+int dma_resv_reserve_fences(struct dma_resv *obj, unsigned int num_fences);
+void dma_resv_add_fence(struct dma_resv *obj, struct dma_fence *fence,
+ enum dma_resv_usage usage);
+void dma_resv_replace_fences(struct dma_resv *obj, uint64_t context,
+ struct dma_fence *fence,
+ enum dma_resv_usage usage);
+int dma_resv_get_fences(struct dma_resv *obj, enum dma_resv_usage usage,
+ unsigned int *num_fences, struct dma_fence ***fences);
+int dma_resv_get_singleton(struct dma_resv *obj, enum dma_resv_usage usage,
+ struct dma_fence **fence);
int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
-long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr,
- unsigned long timeout);
-bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all);
+long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,
+ bool intr, unsigned long timeout);
+bool dma_resv_test_signaled(struct dma_resv *obj, enum dma_resv_usage usage);
void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq);
#endif /* _LINUX_RESERVATION_H */
diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/dma/imx-dma.h
index 281adbb26e6b..8887762360d4 100644
--- a/include/linux/platform_data/dma-imx.h
+++ b/include/linux/dma/imx-dma.h
@@ -3,8 +3,8 @@
* Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/
-#ifndef __ASM_ARCH_MXC_DMA_H__
-#define __ASM_ARCH_MXC_DMA_H__
+#ifndef __LINUX_DMA_IMX_H
+#define __LINUX_DMA_IMX_H
#include <linux/scatterlist.h>
#include <linux/device.h>
@@ -39,6 +39,7 @@ enum sdma_peripheral_type {
IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */
IMX_DMATYPE_ASRC_SP, /* Shared ASRC */
IMX_DMATYPE_SAI, /* SAI */
+ IMX_DMATYPE_MULTI_SAI, /* MULTI FIFOs For Audio */
};
enum imx_dma_prio {
@@ -65,4 +66,23 @@ static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
!strcmp(chan->device->dev->driver->name, "imx-dma");
}
-#endif
+/**
+ * struct sdma_peripheral_config - SDMA config for audio
+ * @n_fifos_src: Number of FIFOs for recording
+ * @n_fifos_dst: Number of FIFOs for playback
+ * @sw_done: Use software done. Needed for PDM (micfil)
+ *
+ * Some i.MX Audio devices (SAI, micfil) have multiple successive FIFO
+ * registers. For multichannel recording/playback the SAI/micfil have
+ * one FIFO register per channel and the SDMA engine has to read/write
+ * the next channel from/to the next register and wrap around to the
+ * first register when all channels are handled. The number of active
+ * channels must be communicated to the SDMA engine using this struct.
+ */
+struct sdma_peripheral_config {
+ int n_fifos_src;
+ int n_fifos_dst;
+ bool sw_done;
+};
+
+#endif /* __LINUX_DMA_IMX_H */
diff --git a/include/linux/dma/qcom_adm.h b/include/linux/dma/qcom_adm.h
new file mode 100644
index 000000000000..af20df674f0c
--- /dev/null
+++ b/include/linux/dma/qcom_adm.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#ifndef __LINUX_DMA_QCOM_ADM_H
+#define __LINUX_DMA_QCOM_ADM_H
+
+#include <linux/types.h>
+
+struct qcom_adm_peripheral_config {
+ u32 crci;
+ u32 mux;
+};
+
+#endif /* __LINUX_DMA_QCOM_ADM_H */
diff --git a/include/linux/dma/xilinx_dpdma.h b/include/linux/dma/xilinx_dpdma.h
new file mode 100644
index 000000000000..02a4adf8921b
--- /dev/null
+++ b/include/linux/dma/xilinx_dpdma.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_DMA_XILINX_DPDMA_H
+#define __LINUX_DMA_XILINX_DPDMA_H
+
+#include <linux/types.h>
+
+struct xilinx_dpdma_peripheral_config {
+ bool video_group;
+};
+
+#endif /* __LINUX_DMA_XILINX_DPDMA_H */
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 9000f3ffce8b..b46b88e6aa0d 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -50,6 +50,7 @@ enum dma_status {
*/
enum dma_transaction_type {
DMA_MEMCPY,
+ DMA_MEMCPY_SG,
DMA_XOR,
DMA_PQ,
DMA_XOR_VAL,
@@ -418,9 +419,6 @@ enum dma_slave_buswidth {
* @device_fc: Flow Controller Settings. Only valid for slave channels. Fill
* with 'true' if peripheral should be flow controller. Direction will be
* selected at Runtime.
- * @slave_id: Slave requester id. Only valid for slave channels. The dma
- * slave peripheral will have unique id as dma requester which need to be
- * pass as slave config.
* @peripheral_config: peripheral configuration for programming peripheral
* for dmaengine transfer
* @peripheral_size: peripheral configuration buffer size
@@ -448,7 +446,6 @@ struct dma_slave_config {
u32 src_port_window_size;
u32 dst_port_window_size;
bool device_fc;
- unsigned int slave_id;
void *peripheral_config;
size_t peripheral_size;
};
@@ -873,7 +870,6 @@ struct dma_device {
struct device *dev;
struct module *owner;
struct ida chan_ida;
- struct mutex chan_mutex; /* to protect chan_ida */
u32 src_addr_widths;
u32 dst_addr_widths;
@@ -891,6 +887,11 @@ struct dma_device {
struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)(
struct dma_chan *chan, dma_addr_t dst, dma_addr_t src,
size_t len, unsigned long flags);
+ struct dma_async_tx_descriptor *(*device_prep_dma_memcpy_sg)(
+ struct dma_chan *chan,
+ struct scatterlist *dst_sg, unsigned int dst_nents,
+ struct scatterlist *src_sg, unsigned int src_nents,
+ unsigned long flags);
struct dma_async_tx_descriptor *(*device_prep_dma_xor)(
struct dma_chan *chan, dma_addr_t dst, dma_addr_t *src,
unsigned int src_cnt, size_t len, unsigned long flags);
@@ -1029,6 +1030,14 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma(
return chan->device->device_prep_interleaved_dma(chan, xt, flags);
}
+/**
+ * dmaengine_prep_dma_memset() - Prepare a DMA memset descriptor.
+ * @chan: The channel to be used for this descriptor
+ * @dest: Address of buffer to be set
+ * @value: Treated as a single byte value that fills the destination buffer
+ * @len: The total size of dest
+ * @flags: DMA engine flags
+ */
static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memset(
struct dma_chan *chan, dma_addr_t dest, int value, size_t len,
unsigned long flags)
@@ -1051,6 +1060,20 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy(
len, flags);
}
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy_sg(
+ struct dma_chan *chan,
+ struct scatterlist *dst_sg, unsigned int dst_nents,
+ struct scatterlist *src_sg, unsigned int src_nents,
+ unsigned long flags)
+{
+ if (!chan || !chan->device || !chan->device->device_prep_dma_memcpy_sg)
+ return NULL;
+
+ return chan->device->device_prep_dma_memcpy_sg(chan, dst_sg, dst_nents,
+ src_sg, src_nents,
+ flags);
+}
+
static inline bool dmaengine_is_metadata_mode_supported(struct dma_chan *chan,
enum dma_desc_metadata_mode mode)
{
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 45e903d84733..cbd714a198a0 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -121,7 +121,7 @@ extern int dmar_remove_dev_scope(struct dmar_pci_notify_info *info,
u16 segment, struct dmar_dev_scope *devices,
int count);
/* Intel IOMMU detection */
-extern int detect_intel_iommu(void);
+void detect_intel_iommu(void);
extern int enable_drhd_fault_handling(void);
extern int dmar_device_add(acpi_handle handle);
extern int dmar_device_remove(acpi_handle handle);
@@ -197,6 +197,10 @@ static inline bool dmar_platform_optin(void)
return false;
}
+static inline void detect_intel_iommu(void)
+{
+}
+
#endif /* CONFIG_DMAR_TABLE */
struct irte {
diff --git a/include/linux/dnotify.h b/include/linux/dnotify.h
index 0aad774beaec..b1d26f9f1c9f 100644
--- a/include/linux/dnotify.h
+++ b/include/linux/dnotify.h
@@ -26,10 +26,9 @@ struct dnotify_struct {
FS_MODIFY | FS_MODIFY_CHILD |\
FS_ACCESS | FS_ACCESS_CHILD |\
FS_ATTRIB | FS_ATTRIB_CHILD |\
- FS_CREATE | FS_DN_RENAME |\
+ FS_CREATE | FS_RENAME |\
FS_MOVED_FROM | FS_MOVED_TO)
-extern int dir_notify_enable;
extern void dnotify_flush(struct file *, fl_owner_t);
extern int fcntl_dirnotify(int, struct file *, unsigned long);
diff --git a/include/linux/dsa/8021q.h b/include/linux/dsa/8021q.h
index 939a1beaddf7..3ed117e299ec 100644
--- a/include/linux/dsa/8021q.h
+++ b/include/linux/dsa/8021q.h
@@ -32,31 +32,29 @@ int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto);
void dsa_tag_8021q_unregister(struct dsa_switch *ds);
-struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
- u16 tpid, u16 tci);
+int dsa_tag_8021q_bridge_join(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge);
-void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id);
+void dsa_tag_8021q_bridge_leave(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge);
-int dsa_tag_8021q_bridge_tx_fwd_offload(struct dsa_switch *ds, int port,
- struct dsa_bridge bridge);
+struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
+ u16 tpid, u16 tci);
-void dsa_tag_8021q_bridge_tx_fwd_unoffload(struct dsa_switch *ds, int port,
- struct dsa_bridge bridge);
+void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id,
+ int *vbid);
-u16 dsa_8021q_bridge_tx_fwd_offload_vid(unsigned int bridge_num);
+struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *master,
+ int vbid);
-u16 dsa_tag_8021q_tx_vid(const struct dsa_port *dp);
+u16 dsa_tag_8021q_bridge_vid(unsigned int bridge_num);
-u16 dsa_tag_8021q_rx_vid(const struct dsa_port *dp);
+u16 dsa_tag_8021q_standalone_vid(const struct dsa_port *dp);
int dsa_8021q_rx_switch_id(u16 vid);
int dsa_8021q_rx_source_port(u16 vid);
-bool vid_is_dsa_8021q_rxvlan(u16 vid);
-
-bool vid_is_dsa_8021q_txvlan(u16 vid);
-
bool vid_is_dsa_8021q(u16 vid);
#endif /* _NET_DSA_8021Q_H */
diff --git a/include/linux/dsa/tag_qca.h b/include/linux/dsa/tag_qca.h
new file mode 100644
index 000000000000..4359fb0221cf
--- /dev/null
+++ b/include/linux/dsa/tag_qca.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __TAG_QCA_H
+#define __TAG_QCA_H
+
+#define QCA_HDR_LEN 2
+#define QCA_HDR_VERSION 0x2
+
+#define QCA_HDR_RECV_VERSION GENMASK(15, 14)
+#define QCA_HDR_RECV_PRIORITY GENMASK(13, 11)
+#define QCA_HDR_RECV_TYPE GENMASK(10, 6)
+#define QCA_HDR_RECV_FRAME_IS_TAGGED BIT(3)
+#define QCA_HDR_RECV_SOURCE_PORT GENMASK(2, 0)
+
+/* Packet type for recv */
+#define QCA_HDR_RECV_TYPE_NORMAL 0x0
+#define QCA_HDR_RECV_TYPE_MIB 0x1
+#define QCA_HDR_RECV_TYPE_RW_REG_ACK 0x2
+
+#define QCA_HDR_XMIT_VERSION GENMASK(15, 14)
+#define QCA_HDR_XMIT_PRIORITY GENMASK(13, 11)
+#define QCA_HDR_XMIT_CONTROL GENMASK(10, 8)
+#define QCA_HDR_XMIT_FROM_CPU BIT(7)
+#define QCA_HDR_XMIT_DP_BIT GENMASK(6, 0)
+
+/* Packet type for xmit */
+#define QCA_HDR_XMIT_TYPE_NORMAL 0x0
+#define QCA_HDR_XMIT_TYPE_RW_REG 0x1
+
+/* Check code for a valid mgmt packet. Switch will ignore the packet
+ * with this wrong.
+ */
+#define QCA_HDR_MGMT_CHECK_CODE_VAL 0x5
+
+/* Specific define for in-band MDIO read/write with Ethernet packet */
+#define QCA_HDR_MGMT_SEQ_LEN 4 /* 4 byte for the seq */
+#define QCA_HDR_MGMT_COMMAND_LEN 4 /* 4 byte for the command */
+#define QCA_HDR_MGMT_DATA1_LEN 4 /* First 4 byte for the mdio data */
+#define QCA_HDR_MGMT_HEADER_LEN (QCA_HDR_MGMT_SEQ_LEN + \
+ QCA_HDR_MGMT_COMMAND_LEN + \
+ QCA_HDR_MGMT_DATA1_LEN)
+
+#define QCA_HDR_MGMT_DATA2_LEN 12 /* Other 12 byte for the mdio data */
+#define QCA_HDR_MGMT_PADDING_LEN 34 /* Padding to reach the min Ethernet packet */
+
+#define QCA_HDR_MGMT_PKT_LEN (QCA_HDR_MGMT_HEADER_LEN + \
+ QCA_HDR_LEN + \
+ QCA_HDR_MGMT_DATA2_LEN + \
+ QCA_HDR_MGMT_PADDING_LEN)
+
+#define QCA_HDR_MGMT_SEQ_NUM GENMASK(31, 0) /* 63, 32 */
+#define QCA_HDR_MGMT_CHECK_CODE GENMASK(31, 29) /* 31, 29 */
+#define QCA_HDR_MGMT_CMD BIT(28) /* 28 */
+#define QCA_HDR_MGMT_LENGTH GENMASK(23, 20) /* 23, 20 */
+#define QCA_HDR_MGMT_ADDR GENMASK(18, 0) /* 18, 0 */
+
+/* Special struct emulating a Ethernet header */
+struct qca_mgmt_ethhdr {
+ u32 command; /* command bit 31:0 */
+ u32 seq; /* seq 63:32 */
+ u32 mdio_data; /* first 4byte mdio */
+ __be16 hdr; /* qca hdr */
+} __packed;
+
+enum mdio_cmd {
+ MDIO_WRITE = 0x0,
+ MDIO_READ
+};
+
+struct mib_ethhdr {
+ u32 data[3]; /* first 3 mib counter */
+ __be16 hdr; /* qca hdr */
+} __packed;
+
+struct qca_tagger_data {
+ void (*rw_reg_ack_handler)(struct dsa_switch *ds,
+ struct sk_buff *skb);
+ void (*mib_autocast_handler)(struct dsa_switch *ds,
+ struct sk_buff *skb);
+};
+
+#endif /* __TAG_QCA_H */
diff --git a/include/linux/dtpm.h b/include/linux/dtpm.h
index d37e5d06a357..a4a13514b730 100644
--- a/include/linux/dtpm.h
+++ b/include/linux/dtpm.h
@@ -32,28 +32,25 @@ struct dtpm_ops {
void (*release)(struct dtpm *);
};
-typedef int (*dtpm_init_t)(void);
+struct device_node;
-struct dtpm_descr {
- dtpm_init_t init;
+struct dtpm_subsys_ops {
+ const char *name;
+ int (*init)(void);
+ void (*exit)(void);
+ int (*setup)(struct dtpm *, struct device_node *);
};
-/* Init section thermal table */
-extern struct dtpm_descr __dtpm_table[];
-extern struct dtpm_descr __dtpm_table_end[];
-
-#define DTPM_TABLE_ENTRY(name, __init) \
- static struct dtpm_descr __dtpm_table_entry_##name \
- __used __section("__dtpm_table") = { \
- .init = __init, \
- }
-
-#define DTPM_DECLARE(name, init) DTPM_TABLE_ENTRY(name, init)
+enum DTPM_NODE_TYPE {
+ DTPM_NODE_VIRTUAL = 0,
+ DTPM_NODE_DT,
+};
-#define for_each_dtpm_table(__dtpm) \
- for (__dtpm = __dtpm_table; \
- __dtpm < __dtpm_table_end; \
- __dtpm++)
+struct dtpm_node {
+ enum DTPM_NODE_TYPE type;
+ const char *name;
+ struct dtpm_node *parent;
+};
static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
{
@@ -70,4 +67,7 @@ void dtpm_unregister(struct dtpm *dtpm);
int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
+int dtpm_create_hierarchy(struct of_device_id *dtpm_match_table);
+
+void dtpm_destroy_hierarchy(void);
#endif
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 0de9fb1fdc5a..7d9b0bb47eb3 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -148,6 +148,52 @@ typedef struct {
u32 imagesize;
} efi_capsule_header_t;
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER */
+struct efi_manage_capsule_header {
+ u32 ver;
+ u16 emb_drv_cnt;
+ u16 payload_cnt;
+ /*
+ * Variable-size array of the size given by the sum of
+ * emb_drv_cnt and payload_cnt.
+ */
+ u64 offset_list[];
+} __packed;
+
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER */
+struct efi_manage_capsule_image_header {
+ u32 ver;
+ efi_guid_t image_type_id;
+ u8 image_index;
+ u8 reserved_bytes[3];
+ u32 image_size;
+ u32 vendor_code_size;
+ /* hw_ins was introduced in version 2 */
+ u64 hw_ins;
+ /* capsule_support was introduced in version 3 */
+ u64 capsule_support;
+} __packed;
+
+/* WIN_CERTIFICATE */
+struct win_cert {
+ u32 len;
+ u16 rev;
+ u16 cert_type;
+};
+
+/* WIN_CERTIFICATE_UEFI_GUID */
+struct win_cert_uefi_guid {
+ struct win_cert hdr;
+ efi_guid_t cert_type;
+ u8 cert_data[];
+};
+
+/* EFI_FIRMWARE_IMAGE_AUTHENTICATION */
+struct efi_image_auth {
+ u64 mon_count;
+ struct win_cert_uefi_guid auth_info;
+};
+
/*
* EFI capsule flags
*/
@@ -167,6 +213,8 @@ struct capsule_info {
size_t page_bytes_remain;
};
+int efi_capsule_setup_info(struct capsule_info *cap_info, void *kbuff,
+ size_t hdr_bytes);
int __efi_capsule_setup_info(struct capsule_info *cap_info);
/*
@@ -337,6 +385,7 @@ void efi_native_runtime_setup(void);
#define EFI_LOAD_FILE_PROTOCOL_GUID EFI_GUID(0x56ec3091, 0x954c, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define EFI_LOAD_FILE2_PROTOCOL_GUID EFI_GUID(0x4006c0c1, 0xfcb3, 0x403e, 0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d)
#define EFI_RT_PROPERTIES_TABLE_GUID EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9)
+#define EFI_DXE_SERVICES_TABLE_GUID EFI_GUID(0x05ad34ba, 0x6f02, 0x4214, 0x95, 0x2e, 0x4d, 0xa0, 0x39, 0x8e, 0x2b, 0xb9)
#define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
#define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
@@ -344,6 +393,7 @@ void efi_native_runtime_setup(void);
#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
+#define EFI_CC_BLOB_GUID EFI_GUID(0x067b1f5f, 0xcf26, 0x44c5, 0x85, 0x54, 0x93, 0xd7, 0x77, 0x91, 0x2d, 0x42)
/*
* This GUID is used to pass to the kernel proper the struct screen_info
@@ -359,6 +409,20 @@ void efi_native_runtime_setup(void);
#define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2)
#define LINUX_EFI_INITRD_MEDIA_GUID EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
#define LINUX_EFI_MOK_VARIABLE_TABLE_GUID EFI_GUID(0xc451ed2b, 0x9694, 0x45d3, 0xba, 0xba, 0xed, 0x9f, 0x89, 0x88, 0xa3, 0x89)
+#define LINUX_EFI_COCO_SECRET_AREA_GUID EFI_GUID(0xadf956ad, 0xe98c, 0x484c, 0xae, 0x11, 0xb5, 0x1c, 0x7d, 0x33, 0x64, 0x47)
+
+#define RISCV_EFI_BOOT_PROTOCOL_GUID EFI_GUID(0xccd15fec, 0x6f73, 0x4eec, 0x83, 0x95, 0x3e, 0x69, 0xe4, 0xb9, 0x40, 0xbf)
+
+/*
+ * This GUID may be installed onto the kernel image's handle as a NULL protocol
+ * to signal to the stub that the placement of the image should be respected,
+ * and moving the image in physical memory is undesirable. To ensure
+ * compatibility with 64k pages kernels with virtually mapped stacks, and to
+ * avoid defeating physical randomization, this protocol should only be
+ * installed if the image was placed at a randomized 128k aligned address in
+ * memory.
+ */
+#define LINUX_EFI_LOADED_IMAGE_FIXED_GUID EFI_GUID(0xf5a37b6d, 0x3344, 0x42a5, 0xb6, 0xbb, 0x97, 0x86, 0x48, 0xc1, 0x89, 0x0a)
/* OEM GUIDs */
#define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55)
@@ -389,6 +453,7 @@ typedef struct {
} efi_config_table_type_t;
#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
+#define EFI_DXE_SERVICES_TABLE_SIGNATURE ((u64)0x565245535f455844ULL)
#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
@@ -550,6 +615,7 @@ extern struct efi {
unsigned long tpm_log; /* TPM2 Event Log table */
unsigned long tpm_final_log; /* TPM2 Final Events Log table */
unsigned long mokvar_table; /* MOK variable config table */
+ unsigned long coco_secret; /* Confidential computing secret table */
efi_get_time_t *get_time;
efi_set_time_t *set_time;
@@ -1283,10 +1349,14 @@ static inline struct efi_mokvar_table_entry *efi_mokvar_entry_find(
}
#endif
-#ifdef CONFIG_SYSFB
extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt);
-#else
-static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) { }
-#endif
+
+struct linux_efi_coco_secret_area {
+ u64 base_pa;
+ u64 size;
+};
+
+/* Header of a populated EFI secret area */
+#define EFI_SECRET_TABLE_HEADER_GUID EFI_GUID(0x1e74f542, 0x71dd, 0x4d66, 0x96, 0x3e, 0xef, 0x42, 0x87, 0xff, 0x17, 0x3b)
#endif /* _LINUX_EFI_H */
diff --git a/include/linux/elfcore-compat.h b/include/linux/elfcore-compat.h
index e272c3d452ce..54feb64e9b5d 100644
--- a/include/linux/elfcore-compat.h
+++ b/include/linux/elfcore-compat.h
@@ -43,6 +43,11 @@ struct compat_elf_prpsinfo
__compat_uid_t pr_uid;
__compat_gid_t pr_gid;
compat_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /*
+ * The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be
+ * changed as it is exposed to userspace. We'd better make it hard-coded
+ * here.
+ */
char pr_fname[16];
char pr_psargs[ELF_PRARGSZ];
};
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index 957ebec35aad..346a8b56cdc8 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -65,6 +65,11 @@ struct elf_prpsinfo
__kernel_gid_t pr_gid;
pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
/* Lots missing */
+ /*
+ * The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be
+ * changed as it is exposed to userspace. We'd better make it hard-coded
+ * here.
+ */
char pr_fname[16]; /* filename of executable */
char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
};
@@ -79,15 +84,6 @@ static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *re
#endif
}
-static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
-{
-#ifdef ELF_CORE_COPY_KERNEL_REGS
- ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
-#else
- elf_core_copy_regs(elfregs, regs);
-#endif
-}
-
static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
{
#if defined (ELF_CORE_COPY_TASK_REGS)
@@ -109,7 +105,7 @@ static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_reg
#endif
}
-#if (defined(CONFIG_UML) && defined(CONFIG_X86_32)) || defined(CONFIG_IA64)
+#ifdef CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS
/*
* These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
* extra segments containing the gate DSO contents. Dumping its
@@ -144,6 +140,6 @@ static inline size_t elf_core_extra_data_size(void)
{
return 0;
}
-#endif
+#endif /* CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS */
#endif /* _LINUX_ELFCORE_H */
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index 6377adc3b78d..8419bffb4398 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -67,11 +67,16 @@ struct em_perf_domain {
*
* EM_PERF_DOMAIN_SKIP_INEFFICIENCIES: Skip inefficient states when estimating
* energy consumption.
+ *
+ * EM_PERF_DOMAIN_ARTIFICIAL: The power values are artificial and might be
+ * created by platform missing real power information
*/
#define EM_PERF_DOMAIN_MILLIWATTS BIT(0)
#define EM_PERF_DOMAIN_SKIP_INEFFICIENCIES BIT(1)
+#define EM_PERF_DOMAIN_ARTIFICIAL BIT(2)
#define em_span_cpus(em) (to_cpumask((em)->cpus))
+#define em_is_artificial(em) ((em)->flags & EM_PERF_DOMAIN_ARTIFICIAL)
#ifdef CONFIG_ENERGY_MODEL
#define EM_MAX_POWER 0xFFFF
@@ -96,11 +101,11 @@ struct em_data_callback {
/**
* active_power() - Provide power at the next performance state of
* a device
+ * @dev : Device for which we do this operation (can be a CPU)
* @power : Active power at the performance state
* (modified)
* @freq : Frequency at the performance state in kHz
* (modified)
- * @dev : Device for which we do this operation (can be a CPU)
*
* active_power() must find the lowest performance state of 'dev' above
* 'freq' and update 'power' and 'freq' to the matching active power
@@ -112,10 +117,32 @@ struct em_data_callback {
*
* Return 0 on success.
*/
- int (*active_power)(unsigned long *power, unsigned long *freq,
- struct device *dev);
+ int (*active_power)(struct device *dev, unsigned long *power,
+ unsigned long *freq);
+
+ /**
+ * get_cost() - Provide the cost at the given performance state of
+ * a device
+ * @dev : Device for which we do this operation (can be a CPU)
+ * @freq : Frequency at the performance state in kHz
+ * @cost : The cost value for the performance state
+ * (modified)
+ *
+ * In case of CPUs, the cost is the one of a single CPU in the domain.
+ * It is expected to fit in the [0, EM_MAX_POWER] range due to internal
+ * usage in EAS calculation.
+ *
+ * Return 0 on success, or appropriate error value in case of failure.
+ */
+ int (*get_cost)(struct device *dev, unsigned long freq,
+ unsigned long *cost);
};
-#define EM_DATA_CB(_active_power_cb) { .active_power = &_active_power_cb }
+#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) ((em_cb).active_power = cb)
+#define EM_ADV_DATA_CB(_active_power_cb, _cost_cb) \
+ { .active_power = _active_power_cb, \
+ .get_cost = _cost_cb }
+#define EM_DATA_CB(_active_power_cb) \
+ EM_ADV_DATA_CB(_active_power_cb, NULL)
struct em_perf_domain *em_cpu_get(int cpu);
struct em_perf_domain *em_pd_get(struct device *dev);
@@ -263,7 +290,9 @@ static inline int em_pd_nr_perf_states(struct em_perf_domain *pd)
#else
struct em_data_callback {};
+#define EM_ADV_DATA_CB(_active_power_cb, _cost_cb) { }
#define EM_DATA_CB(_active_power_cb) { }
+#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) do { } while (0)
static inline
int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 2e2b8d6140ed..c92ac75d6556 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -3,7 +3,7 @@
#define __LINUX_ENTRYCOMMON_H
#include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/ptrace.h>
#include <linux/syscalls.h>
#include <linux/seccomp.h>
#include <linux/sched.h>
@@ -63,7 +63,7 @@
ARCH_EXIT_TO_USER_MODE_WORK)
/**
- * arch_check_user_regs - Architecture specific sanity check for user mode regs
+ * arch_enter_from_user_mode - Architecture specific sanity check for user mode regs
* @regs: Pointer to currents pt_regs
*
* Defaults to an empty implementation. Can be replaced by architecture
@@ -73,30 +73,10 @@
* section. Use __always_inline so the compiler cannot push it out of line
* and make it instrumentable.
*/
-static __always_inline void arch_check_user_regs(struct pt_regs *regs);
+static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs);
-#ifndef arch_check_user_regs
-static __always_inline void arch_check_user_regs(struct pt_regs *regs) {}
-#endif
-
-/**
- * arch_syscall_enter_tracehook - Wrapper around tracehook_report_syscall_entry()
- * @regs: Pointer to currents pt_regs
- *
- * Returns: 0 on success or an error code to skip the syscall.
- *
- * Defaults to tracehook_report_syscall_entry(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_enter_from_user_mode()
- */
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs);
-
-#ifndef arch_syscall_enter_tracehook
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs)
-{
- return tracehook_report_syscall_entry(regs);
-}
+#ifndef arch_enter_from_user_mode
+static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs) {}
#endif
/**
@@ -157,7 +137,7 @@ void syscall_enter_from_user_mode_prepare(struct pt_regs *regs);
* It handles the following work items:
*
* 1) syscall_work flag dependent invocations of
- * arch_syscall_enter_tracehook(), __secure_computing(), trace_sys_enter()
+ * ptrace_report_syscall_entry(), __secure_computing(), trace_sys_enter()
* 2) Invocation of audit_syscall_entry()
*/
long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall);
@@ -277,26 +257,7 @@ static __always_inline void arch_exit_to_user_mode(void) { }
*
* Invoked from exit_to_user_mode_loop().
*/
-void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal);
-
-/**
- * arch_syscall_exit_tracehook - Wrapper around tracehook_report_syscall_exit()
- * @regs: Pointer to currents pt_regs
- * @step: Indicator for single step
- *
- * Defaults to tracehook_report_syscall_exit(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_exit_to_user_mode()
- */
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step);
-
-#ifndef arch_syscall_exit_tracehook
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step)
-{
- tracehook_report_syscall_exit(regs, step);
-}
-#endif
+void arch_do_signal_or_restart(struct pt_regs *regs);
/**
* exit_to_user_mode - Fixup state when exiting to user mode
@@ -347,7 +308,7 @@ void syscall_exit_to_user_mode_work(struct pt_regs *regs);
* - rseq syscall exit
* - audit
* - syscall tracing
- * - tracehook (single stepping)
+ * - ptrace (single stepping)
*
* 2) Preparatory work
* - Exit to user mode loop (common TIF handling). Invokes
@@ -454,10 +415,21 @@ irqentry_state_t noinstr irqentry_enter(struct pt_regs *regs);
*
* Conditional reschedule with additional sanity checks.
*/
-void irqentry_exit_cond_resched(void);
+void raw_irqentry_exit_cond_resched(void);
#ifdef CONFIG_PREEMPT_DYNAMIC
-DECLARE_STATIC_CALL(irqentry_exit_cond_resched, irqentry_exit_cond_resched);
+#if defined(CONFIG_HAVE_PREEMPT_DYNAMIC_CALL)
+#define irqentry_exit_cond_resched_dynamic_enabled raw_irqentry_exit_cond_resched
+#define irqentry_exit_cond_resched_dynamic_disabled NULL
+DECLARE_STATIC_CALL(irqentry_exit_cond_resched, raw_irqentry_exit_cond_resched);
+#define irqentry_exit_cond_resched() static_call(irqentry_exit_cond_resched)()
+#elif defined(CONFIG_HAVE_PREEMPT_DYNAMIC_KEY)
+DECLARE_STATIC_KEY_TRUE(sk_dynamic_irqentry_exit_cond_resched);
+void dynamic_irqentry_exit_cond_resched(void);
+#define irqentry_exit_cond_resched() dynamic_irqentry_exit_cond_resched()
#endif
+#else /* CONFIG_PREEMPT_DYNAMIC */
+#define irqentry_exit_cond_resched() raw_irqentry_exit_cond_resched()
+#endif /* CONFIG_PREEMPT_DYNAMIC */
/**
* irqentry_exit - Handle return from exception that used irqentry_enter()
diff --git a/include/linux/entry-kvm.h b/include/linux/entry-kvm.h
index 07c878d6e323..6813171afccb 100644
--- a/include/linux/entry-kvm.h
+++ b/include/linux/entry-kvm.h
@@ -3,7 +3,7 @@
#define __LINUX_ENTRYKVM_H
#include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/syscalls.h>
#include <linux/seccomp.h>
#include <linux/sched.h>
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 2ad71cc90b37..92b10e67d5f8 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -134,7 +134,7 @@ static inline bool is_multicast_ether_addr(const u8 *addr)
#endif
}
-static inline bool is_multicast_ether_addr_64bits(const u8 addr[6+2])
+static inline bool is_multicast_ether_addr_64bits(const u8 *addr)
{
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
#ifdef __BIG_ENDIAN
@@ -372,8 +372,7 @@ static inline bool ether_addr_equal(const u8 *addr1, const u8 *addr2)
* Please note that alignment of addr1 & addr2 are only guaranteed to be 16 bits.
*/
-static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
- const u8 addr2[6+2])
+static inline bool ether_addr_equal_64bits(const u8 *addr1, const u8 *addr2)
{
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
u64 fold = (*(const u64 *)addr1) ^ (*(const u64 *)addr2);
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index a26f37a27167..99dc7bfbcd3c 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -70,17 +70,27 @@ enum {
/**
* struct kernel_ethtool_ringparam - RX/TX ring configuration
* @rx_buf_len: Current length of buffers on the rx ring.
+ * @tcp_data_split: Scatter packet headers and data to separate buffers
+ * @tx_push: The flag of tx push mode
+ * @cqe_size: Size of TX/RX completion queue event
*/
struct kernel_ethtool_ringparam {
u32 rx_buf_len;
+ u8 tcp_data_split;
+ u8 tx_push;
+ u32 cqe_size;
};
/**
* enum ethtool_supported_ring_param - indicator caps for setting ring params
* @ETHTOOL_RING_USE_RX_BUF_LEN: capture for setting rx_buf_len
+ * @ETHTOOL_RING_USE_CQE_SIZE: capture for setting cqe_size
+ * @ETHTOOL_RING_USE_TX_PUSH: capture for setting tx_push
*/
enum ethtool_supported_ring_param {
ETHTOOL_RING_USE_RX_BUF_LEN = BIT(0),
+ ETHTOOL_RING_USE_CQE_SIZE = BIT(1),
+ ETHTOOL_RING_USE_TX_PUSH = BIT(2),
};
#define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
@@ -111,7 +121,7 @@ struct ethtool_link_ext_state_info {
enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
enum ethtool_link_ext_substate_cable_issue cable_issue;
enum ethtool_link_ext_substate_module module;
- u8 __link_ext_substate;
+ u32 __link_ext_substate;
};
};
diff --git a/include/linux/export-internal.h b/include/linux/export-internal.h
new file mode 100644
index 000000000000..c2b1d4fd5987
--- /dev/null
+++ b/include/linux/export-internal.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Please do not include this explicitly.
+ * This is used by C files generated by modpost.
+ */
+
+#ifndef __LINUX_EXPORT_INTERNAL_H__
+#define __LINUX_EXPORT_INTERNAL_H__
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+/* __used is needed to keep __crc_* for LTO */
+#define SYMBOL_CRC(sym, crc, sec) \
+ u32 __section("___kcrctab" sec "+" #sym) __used __crc_##sym = crc
+
+#endif /* __LINUX_EXPORT_INTERNAL_H__ */
diff --git a/include/linux/export.h b/include/linux/export.h
index 27d848712b90..3f31ced0d977 100644
--- a/include/linux/export.h
+++ b/include/linux/export.h
@@ -2,6 +2,8 @@
#ifndef _LINUX_EXPORT_H
#define _LINUX_EXPORT_H
+#include <linux/stringify.h>
+
/*
* Export symbols from the kernel to modules. Forked from module.h
* to reduce the amount of pointless cruft we feed to gcc when only
@@ -11,6 +13,14 @@
* hackers place grumpy comments in header files.
*/
+/*
+ * This comment block is used by fixdep. Please do not remove.
+ *
+ * When CONFIG_MODVERSIONS is changed from n to y, all source files having
+ * EXPORT_SYMBOL variants must be re-compiled because genksyms is run as a
+ * side effect of the *.o build rule.
+ */
+
#ifndef __ASSEMBLY__
#ifdef MODULE
extern struct module __this_module;
@@ -19,26 +29,6 @@ extern struct module __this_module;
#define THIS_MODULE ((struct module *)0)
#endif
-#ifdef CONFIG_MODVERSIONS
-/* Mark the CRC weak since genksyms apparently decides not to
- * generate a checksums for some symbols */
-#if defined(CONFIG_MODULE_REL_CRCS)
-#define __CRC_SYMBOL(sym, sec) \
- asm(" .section \"___kcrctab" sec "+" #sym "\", \"a\" \n" \
- " .weak __crc_" #sym " \n" \
- " .long __crc_" #sym " - . \n" \
- " .previous \n")
-#else
-#define __CRC_SYMBOL(sym, sec) \
- asm(" .section \"___kcrctab" sec "+" #sym "\", \"a\" \n" \
- " .weak __crc_" #sym " \n" \
- " .long __crc_" #sym " \n" \
- " .previous \n")
-#endif
-#else
-#define __CRC_SYMBOL(sym, sec)
-#endif
-
#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
#include <linux/compiler.h>
/*
@@ -85,7 +75,6 @@ struct kernel_symbol {
/*
* For every exported symbol, do the following:
*
- * - If applicable, place a CRC entry in the __kcrctab section.
* - Put the name of the symbol and namespace (empty string "" for none) in
* __ksymtab_strings.
* - Place a struct kernel_symbol entry in the __ksymtab section.
@@ -98,7 +87,6 @@ struct kernel_symbol {
extern typeof(sym) sym; \
extern const char __kstrtab_##sym[]; \
extern const char __kstrtabns_##sym[]; \
- __CRC_SYMBOL(sym, sec); \
asm(" .section \"__ksymtab_strings\",\"aMS\",%progbits,1 \n" \
"__kstrtab_" #sym ": \n" \
" .asciz \"" #sym "\" \n" \
@@ -154,7 +142,6 @@ struct kernel_symbol {
#endif /* CONFIG_MODULES */
#ifdef DEFAULT_SYMBOL_NAMESPACE
-#include <linux/stringify.h>
#define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, __stringify(DEFAULT_SYMBOL_NAMESPACE))
#else
#define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
@@ -162,8 +149,8 @@ struct kernel_symbol {
#define EXPORT_SYMBOL(sym) _EXPORT_SYMBOL(sym, "")
#define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "_gpl")
-#define EXPORT_SYMBOL_NS(sym, ns) __EXPORT_SYMBOL(sym, "", #ns)
-#define EXPORT_SYMBOL_NS_GPL(sym, ns) __EXPORT_SYMBOL(sym, "_gpl", #ns)
+#define EXPORT_SYMBOL_NS(sym, ns) __EXPORT_SYMBOL(sym, "", __stringify(ns))
+#define EXPORT_SYMBOL_NS_GPL(sym, ns) __EXPORT_SYMBOL(sym, "_gpl", __stringify(ns))
#endif /* !__ASSEMBLY__ */
diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h
index 3260fe714846..fe848901fcc3 100644
--- a/include/linux/exportfs.h
+++ b/include/linux/exportfs.h
@@ -221,8 +221,6 @@ struct export_operations {
#define EXPORT_OP_NOATOMIC_ATTR (0x10) /* Filesystem cannot supply
atomic attribute updates
*/
-#define EXPORT_OP_SYNC_LOCKS (0x20) /* Filesystem can't do
- asychronous blocking locks */
unsigned long flags;
};
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 0c19010da77f..685401d94d39 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -296,7 +296,7 @@ static inline void devm_extcon_unregister_notifier_all(struct device *dev,
static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name)
{
- return ERR_PTR(-ENODEV);
+ return NULL;
}
static inline struct extcon_dev *extcon_find_edev_by_node(struct device_node *node)
diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
index 616af2ea20f3..edc28555814c 100644
--- a/include/linux/fanotify.h
+++ b/include/linux/fanotify.h
@@ -5,8 +5,6 @@
#include <linux/sysctl.h>
#include <uapi/linux/fanotify.h>
-extern struct ctl_table fanotify_table[]; /* for sysctl */
-
#define FAN_GROUP_FLAG(group, flag) \
((group)->fanotify_data.flags & (flag))
@@ -25,7 +23,7 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */
#define FANOTIFY_CLASS_BITS (FAN_CLASS_NOTIF | FANOTIFY_PERM_CLASSES)
-#define FANOTIFY_FID_BITS (FAN_REPORT_FID | FAN_REPORT_DFID_NAME)
+#define FANOTIFY_FID_BITS (FAN_REPORT_DFID_NAME_TARGET)
#define FANOTIFY_INFO_MODES (FANOTIFY_FID_BITS | FAN_REPORT_PIDFD)
@@ -68,6 +66,7 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */
FAN_MARK_ONLYDIR | \
FAN_MARK_IGNORED_MASK | \
FAN_MARK_IGNORED_SURV_MODIFY | \
+ FAN_MARK_EVICTABLE | \
FAN_MARK_FLUSH)
/*
@@ -82,7 +81,8 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */
* Directory entry modification events - reported only to directory
* where entry is modified and not to a watching parent.
*/
-#define FANOTIFY_DIRENT_EVENTS (FAN_MOVE | FAN_CREATE | FAN_DELETE)
+#define FANOTIFY_DIRENT_EVENTS (FAN_MOVE | FAN_CREATE | FAN_DELETE | \
+ FAN_RENAME)
/* Events that can be reported with event->fd */
#define FANOTIFY_FD_EVENTS (FANOTIFY_PATH_EVENTS | FANOTIFY_PERM_EVENTS)
diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index e525f6957c49..9f6e25467844 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -20,6 +20,7 @@ struct fault_attr {
atomic_t space;
unsigned long verbose;
bool task_filter;
+ bool no_warn;
unsigned long stacktrace_depth;
unsigned long require_start;
unsigned long require_end;
@@ -39,6 +40,7 @@ struct fault_attr {
.ratelimit_state = RATELIMIT_STATE_INIT_DISABLED, \
.verbose = 2, \
.dname = NULL, \
+ .no_warn = false, \
}
#define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER
@@ -64,6 +66,8 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
struct kmem_cache;
+bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order);
+
int should_failslab(struct kmem_cache *s, gfp_t gfpflags);
#ifdef CONFIG_FAILSLAB
extern bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags);
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 3da95842b207..2892145468c9 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -201,11 +201,19 @@ struct fb_pixmap {
};
#ifdef CONFIG_FB_DEFERRED_IO
+struct fb_deferred_io_pageref {
+ struct page *page;
+ unsigned long offset;
+ /* private */
+ struct list_head list;
+};
+
struct fb_deferred_io {
/* delay between mkwrite and deferred handler */
unsigned long delay;
- struct mutex lock; /* mutex that protects the page list */
- struct list_head pagelist; /* list of touched pages */
+ bool sort_pagereflist; /* sort pagelist by offset */
+ struct mutex lock; /* mutex that protects the pageref list */
+ struct list_head pagereflist; /* list of pagerefs for touched pages */
/* callback */
void (*first_io)(struct fb_info *info);
void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
@@ -262,7 +270,7 @@ struct fb_ops {
/* Draws a rectangle */
void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
- /* Copy data from area to another. Obsolete. */
+ /* Copy data from area to another */
void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
/* Draws a image to the display */
void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
@@ -449,7 +457,6 @@ struct fb_info {
struct fb_var_screeninfo var; /* Current var */
struct fb_fix_screeninfo fix; /* Current fix */
struct fb_monspecs monspecs; /* Current Monitor specs */
- struct work_struct queue; /* Framebuffer event queue */
struct fb_pixmap pixmap; /* Image hardware mapper */
struct fb_pixmap sprite; /* Cursor hardware mapper */
struct fb_cmap cmap; /* Current cmap */
@@ -468,6 +475,8 @@ struct fb_info {
#endif
#ifdef CONFIG_FB_DEFERRED_IO
struct delayed_work deferred_work;
+ unsigned long npagerefs;
+ struct fb_deferred_io_pageref *pagerefs;
struct fb_deferred_io *fbdefio;
#endif
@@ -502,6 +511,7 @@ struct fb_info {
} *apertures;
bool skip_vt_switch; /* no VT switch on suspend/resume required */
+ bool forced_out; /* set when being removed by another driver */
};
static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
@@ -610,7 +620,6 @@ extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
const char *name);
extern int remove_conflicting_framebuffers(struct apertures_struct *a,
const char *name, bool primary);
-extern bool is_firmware_framebuffer(struct apertures_struct *a);
extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
extern int fb_show_logo(struct fb_info *fb_info, int rotate);
extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
@@ -660,7 +669,7 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
/* drivers/video/fb_defio.c */
int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
-extern void fb_deferred_io_init(struct fb_info *info);
+extern int fb_deferred_io_init(struct fb_info *info);
extern void fb_deferred_io_open(struct fb_info *info,
struct inode *inode,
struct file *file);
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index d0e78174874a..e066816f3519 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -125,7 +125,7 @@ int iterate_fd(struct files_struct *, unsigned,
extern int close_fd(unsigned int fd);
extern int __close_range(unsigned int fd, unsigned int max_fd, unsigned int flags);
-extern int close_fd_get_file(unsigned int fd, struct file **res);
+extern struct file *close_fd_get_file(unsigned int fd);
extern int unshare_fd(unsigned long unshare_flags, unsigned int max_fds,
struct files_struct **new_fdp);
diff --git a/include/linux/file.h b/include/linux/file.h
index 51e830b4fe3a..39704eae83e2 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -14,7 +14,6 @@
struct file;
extern void fput(struct file *);
-extern void fput_many(struct file *, unsigned int);
struct file_operations;
struct task_struct;
@@ -47,7 +46,6 @@ static inline void fdput(struct fd fd)
}
extern struct file *fget(unsigned int fd);
-extern struct file *fget_many(unsigned int fd, unsigned int refs);
extern struct file *fget_raw(unsigned int fd);
extern struct file *fget_task(struct task_struct *task, unsigned int fd);
extern unsigned long __fdget(unsigned int fd);
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 71fa57b88bfc..ed0c0ff42ad5 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -548,7 +548,7 @@ struct sock_fprog_kern {
#define BPF_IMAGE_ALIGNMENT 8
struct bpf_binary_header {
- u32 pages;
+ u32 size;
u8 image[] __aligned(BPF_IMAGE_ALIGNMENT);
};
@@ -566,13 +566,15 @@ struct bpf_prog {
gpl_compatible:1, /* Is filter GPL compatible? */
cb_access:1, /* Is control block accessed? */
dst_needed:1, /* Do we need dst entry? */
+ blinding_requested:1, /* needs constant blinding */
blinded:1, /* Was blinded */
is_func:1, /* program is a bpf function */
kprobe_override:1, /* Do we override a kprobe? */
has_callchain_buf:1, /* callchain buffer allocated? */
enforce_expected_attach_type:1, /* Enforce expected_attach_type checking at attach time */
call_get_stack:1, /* Do we call bpf_get_stack() or bpf_get_stackid() */
- call_get_func_ip:1; /* Do we call get_func_ip() */
+ call_get_func_ip:1, /* Do we call get_func_ip() */
+ tstamp_type_access:1; /* Accessed __sk_buff->tstamp_type */
enum bpf_prog_type type; /* Type of BPF program */
enum bpf_attach_type expected_attach_type; /* For some prog types */
u32 len; /* Number of filter blocks */
@@ -886,17 +888,8 @@ static inline void bpf_prog_lock_ro(struct bpf_prog *fp)
static inline void bpf_jit_binary_lock_ro(struct bpf_binary_header *hdr)
{
set_vm_flush_reset_perms(hdr);
- set_memory_ro((unsigned long)hdr, hdr->pages);
- set_memory_x((unsigned long)hdr, hdr->pages);
-}
-
-static inline struct bpf_binary_header *
-bpf_jit_binary_hdr(const struct bpf_prog *fp)
-{
- unsigned long real_start = (unsigned long)fp->bpf_func;
- unsigned long addr = real_start & PAGE_MASK;
-
- return (void *)addr;
+ set_memory_ro((unsigned long)hdr, hdr->size >> PAGE_SHIFT);
+ set_memory_x((unsigned long)hdr, hdr->size >> PAGE_SHIFT);
}
int sk_filter_trim_cap(struct sock *sk, struct sk_buff *skb, unsigned int cap);
@@ -1068,6 +1061,18 @@ void *bpf_jit_alloc_exec(unsigned long size);
void bpf_jit_free_exec(void *addr);
void bpf_jit_free(struct bpf_prog *fp);
+struct bpf_binary_header *
+bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **ro_image,
+ unsigned int alignment,
+ struct bpf_binary_header **rw_hdr,
+ u8 **rw_image,
+ bpf_jit_fill_hole_t bpf_fill_ill_insns);
+int bpf_jit_binary_pack_finalize(struct bpf_prog *prog,
+ struct bpf_binary_header *ro_header,
+ struct bpf_binary_header *rw_header);
+void bpf_jit_binary_pack_free(struct bpf_binary_header *ro_header,
+ struct bpf_binary_header *rw_header);
+
int bpf_jit_add_poke_descriptor(struct bpf_prog *prog,
struct bpf_jit_poke_descriptor *poke);
@@ -1356,7 +1361,10 @@ struct bpf_sockopt_kern {
s32 level;
s32 optname;
s32 optlen;
- s32 retval;
+ /* for retval in struct bpf_cg_run_ctx */
+ struct task_struct *current_task;
+ /* Temporary "register" for indirect stores to ppos. */
+ u64 tmp_reg;
};
int copy_bpf_fprog_from_user(struct sock_fprog *dst, sockptr_t src, int len);
diff --git a/include/linux/find.h b/include/linux/find.h
new file mode 100644
index 000000000000..424ef67d4a42
--- /dev/null
+++ b/include/linux/find.h
@@ -0,0 +1,372 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_FIND_H_
+#define __LINUX_FIND_H_
+
+#ifndef __LINUX_BITMAP_H
+#error only <linux/bitmap.h> can be included directly
+#endif
+
+#include <linux/bitops.h>
+
+extern unsigned long _find_next_bit(const unsigned long *addr1,
+ const unsigned long *addr2, unsigned long nbits,
+ unsigned long start, unsigned long invert, unsigned long le);
+extern unsigned long _find_first_bit(const unsigned long *addr, unsigned long size);
+extern unsigned long _find_first_and_bit(const unsigned long *addr1,
+ const unsigned long *addr2, unsigned long size);
+extern unsigned long _find_first_zero_bit(const unsigned long *addr, unsigned long size);
+extern unsigned long _find_last_bit(const unsigned long *addr, unsigned long size);
+
+#ifndef find_next_bit
+/**
+ * find_next_bit - find the next set bit in a memory region
+ * @addr: The address to base the search on
+ * @size: The bitmap size in bits
+ * @offset: The bitnumber to start searching at
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
+ unsigned long offset)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val;
+
+ if (unlikely(offset >= size))
+ return size;
+
+ val = *addr & GENMASK(size - 1, offset);
+ return val ? __ffs(val) : size;
+ }
+
+ return _find_next_bit(addr, NULL, size, offset, 0UL, 0);
+}
+#endif
+
+#ifndef find_next_and_bit
+/**
+ * find_next_and_bit - find the next set bit in both memory regions
+ * @addr1: The first address to base the search on
+ * @addr2: The second address to base the search on
+ * @size: The bitmap size in bits
+ * @offset: The bitnumber to start searching at
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_next_and_bit(const unsigned long *addr1,
+ const unsigned long *addr2, unsigned long size,
+ unsigned long offset)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val;
+
+ if (unlikely(offset >= size))
+ return size;
+
+ val = *addr1 & *addr2 & GENMASK(size - 1, offset);
+ return val ? __ffs(val) : size;
+ }
+
+ return _find_next_bit(addr1, addr2, size, offset, 0UL, 0);
+}
+#endif
+
+#ifndef find_next_zero_bit
+/**
+ * find_next_zero_bit - find the next cleared bit in a memory region
+ * @addr: The address to base the search on
+ * @size: The bitmap size in bits
+ * @offset: The bitnumber to start searching at
+ *
+ * Returns the bit number of the next zero bit
+ * If no bits are zero, returns @size.
+ */
+static inline
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+ unsigned long offset)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val;
+
+ if (unlikely(offset >= size))
+ return size;
+
+ val = *addr | ~GENMASK(size - 1, offset);
+ return val == ~0UL ? size : ffz(val);
+ }
+
+ return _find_next_bit(addr, NULL, size, offset, ~0UL, 0);
+}
+#endif
+
+#ifndef find_first_bit
+/**
+ * find_first_bit - find the first set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum number of bits to search
+ *
+ * Returns the bit number of the first set bit.
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *addr & GENMASK(size - 1, 0);
+
+ return val ? __ffs(val) : size;
+ }
+
+ return _find_first_bit(addr, size);
+}
+#endif
+
+#ifndef find_first_and_bit
+/**
+ * find_first_and_bit - find the first set bit in both memory regions
+ * @addr1: The first address to base the search on
+ * @addr2: The second address to base the search on
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_first_and_bit(const unsigned long *addr1,
+ const unsigned long *addr2,
+ unsigned long size)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *addr1 & *addr2 & GENMASK(size - 1, 0);
+
+ return val ? __ffs(val) : size;
+ }
+
+ return _find_first_and_bit(addr1, addr2, size);
+}
+#endif
+
+#ifndef find_first_zero_bit
+/**
+ * find_first_zero_bit - find the first cleared bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum number of bits to search
+ *
+ * Returns the bit number of the first cleared bit.
+ * If no bits are zero, returns @size.
+ */
+static inline
+unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *addr | ~GENMASK(size - 1, 0);
+
+ return val == ~0UL ? size : ffz(val);
+ }
+
+ return _find_first_zero_bit(addr, size);
+}
+#endif
+
+#ifndef find_last_bit
+/**
+ * find_last_bit - find the last set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The number of bits to search
+ *
+ * Returns the bit number of the last set bit, or size.
+ */
+static inline
+unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *addr & GENMASK(size - 1, 0);
+
+ return val ? __fls(val) : size;
+ }
+
+ return _find_last_bit(addr, size);
+}
+#endif
+
+/**
+ * find_next_clump8 - find next 8-bit clump with set bits in a memory region
+ * @clump: location to store copy of found clump
+ * @addr: address to base the search on
+ * @size: bitmap size in number of bits
+ * @offset: bit offset at which to start searching
+ *
+ * Returns the bit offset for the next set clump; the found clump value is
+ * copied to the location pointed by @clump. If no bits are set, returns @size.
+ */
+extern unsigned long find_next_clump8(unsigned long *clump,
+ const unsigned long *addr,
+ unsigned long size, unsigned long offset);
+
+#define find_first_clump8(clump, bits, size) \
+ find_next_clump8((clump), (bits), (size), 0)
+
+#if defined(__LITTLE_ENDIAN)
+
+static inline unsigned long find_next_zero_bit_le(const void *addr,
+ unsigned long size, unsigned long offset)
+{
+ return find_next_zero_bit(addr, size, offset);
+}
+
+static inline unsigned long find_next_bit_le(const void *addr,
+ unsigned long size, unsigned long offset)
+{
+ return find_next_bit(addr, size, offset);
+}
+
+static inline unsigned long find_first_zero_bit_le(const void *addr,
+ unsigned long size)
+{
+ return find_first_zero_bit(addr, size);
+}
+
+#elif defined(__BIG_ENDIAN)
+
+#ifndef find_next_zero_bit_le
+static inline
+unsigned long find_next_zero_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *(const unsigned long *)addr;
+
+ if (unlikely(offset >= size))
+ return size;
+
+ val = swab(val) | ~GENMASK(size - 1, offset);
+ return val == ~0UL ? size : ffz(val);
+ }
+
+ return _find_next_bit(addr, NULL, size, offset, ~0UL, 1);
+}
+#endif
+
+#ifndef find_next_bit_le
+static inline
+unsigned long find_next_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ if (small_const_nbits(size)) {
+ unsigned long val = *(const unsigned long *)addr;
+
+ if (unlikely(offset >= size))
+ return size;
+
+ val = swab(val) & GENMASK(size - 1, offset);
+ return val ? __ffs(val) : size;
+ }
+
+ return _find_next_bit(addr, NULL, size, offset, 0UL, 1);
+}
+#endif
+
+#ifndef find_first_zero_bit_le
+#define find_first_zero_bit_le(addr, size) \
+ find_next_zero_bit_le((addr), (size), 0)
+#endif
+
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+
+#define for_each_set_bit(bit, addr, size) \
+ for ((bit) = find_next_bit((addr), (size), 0); \
+ (bit) < (size); \
+ (bit) = find_next_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_set_bit() but use bit as value to start with */
+#define for_each_set_bit_from(bit, addr, size) \
+ for ((bit) = find_next_bit((addr), (size), (bit)); \
+ (bit) < (size); \
+ (bit) = find_next_bit((addr), (size), (bit) + 1))
+
+#define for_each_clear_bit(bit, addr, size) \
+ for ((bit) = find_next_zero_bit((addr), (size), 0); \
+ (bit) < (size); \
+ (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_clear_bit() but use bit as value to start with */
+#define for_each_clear_bit_from(bit, addr, size) \
+ for ((bit) = find_next_zero_bit((addr), (size), (bit)); \
+ (bit) < (size); \
+ (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/**
+ * for_each_set_bitrange - iterate over all set bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit)
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_bitrange(b, e, addr, size) \
+ for ((b) = find_next_bit((addr), (size), 0), \
+ (e) = find_next_zero_bit((addr), (size), (b) + 1); \
+ (b) < (size); \
+ (b) = find_next_bit((addr), (size), (e) + 1), \
+ (e) = find_next_zero_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_set_bitrange_from - iterate over all set bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit); must be initialized
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_bitrange_from(b, e, addr, size) \
+ for ((b) = find_next_bit((addr), (size), (b)), \
+ (e) = find_next_zero_bit((addr), (size), (b) + 1); \
+ (b) < (size); \
+ (b) = find_next_bit((addr), (size), (e) + 1), \
+ (e) = find_next_zero_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_clear_bitrange - iterate over all unset bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first unset bit)
+ * @e: bit offset of end of current bitrange (first set bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_clear_bitrange(b, e, addr, size) \
+ for ((b) = find_next_zero_bit((addr), (size), 0), \
+ (e) = find_next_bit((addr), (size), (b) + 1); \
+ (b) < (size); \
+ (b) = find_next_zero_bit((addr), (size), (e) + 1), \
+ (e) = find_next_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_clear_bitrange_from - iterate over all unset bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit); must be initialized
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_clear_bitrange_from(b, e, addr, size) \
+ for ((b) = find_next_zero_bit((addr), (size), (b)), \
+ (e) = find_next_bit((addr), (size), (b) + 1); \
+ (b) < (size); \
+ (b) = find_next_zero_bit((addr), (size), (e) + 1), \
+ (e) = find_next_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_set_clump8 - iterate over bitmap for each 8-bit clump with set bits
+ * @start: bit offset to start search and to store the current iteration offset
+ * @clump: location to store copy of current 8-bit clump
+ * @bits: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_clump8(start, clump, bits, size) \
+ for ((start) = find_first_clump8(&(clump), (bits), (size)); \
+ (start) < (size); \
+ (start) = find_next_clump8(&(clump), (bits), (size), (start) + 8))
+
+#endif /*__LINUX_FIND_H_ */
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 07967a450eaa..980019053e54 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -150,6 +150,8 @@ static inline void fw_card_put(struct fw_card *card)
kref_put(&card->kref, fw_card_release);
}
+int fw_card_read_cycle_time(struct fw_card *card, u32 *cycle_time);
+
struct fw_attribute_group {
struct attribute_group *groups[2];
struct attribute_group group;
@@ -352,6 +354,7 @@ void fw_core_remove_address_handler(struct fw_address_handler *handler);
void fw_send_response(struct fw_card *card,
struct fw_request *request, int rcode);
int fw_get_request_speed(struct fw_request *request);
+u32 fw_request_get_timestamp(const struct fw_request *request);
void fw_send_request(struct fw_card *card, struct fw_transaction *t,
int tcode, int destination_id, int generation, int speed,
unsigned long long offset, void *payload, size_t length,
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index 3b057dfc8284..de7fea3bca51 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -17,6 +17,64 @@ struct firmware {
void *priv;
};
+/**
+ * enum fw_upload_err - firmware upload error codes
+ * @FW_UPLOAD_ERR_NONE: returned to indicate success
+ * @FW_UPLOAD_ERR_HW_ERROR: error signalled by hardware, see kernel log
+ * @FW_UPLOAD_ERR_TIMEOUT: SW timed out on handshake with HW/firmware
+ * @FW_UPLOAD_ERR_CANCELED: upload was cancelled by the user
+ * @FW_UPLOAD_ERR_BUSY: there is an upload operation already in progress
+ * @FW_UPLOAD_ERR_INVALID_SIZE: invalid firmware image size
+ * @FW_UPLOAD_ERR_RW_ERROR: read or write to HW failed, see kernel log
+ * @FW_UPLOAD_ERR_WEAROUT: FLASH device is approaching wear-out, wait & retry
+ * @FW_UPLOAD_ERR_MAX: Maximum error code marker
+ */
+enum fw_upload_err {
+ FW_UPLOAD_ERR_NONE,
+ FW_UPLOAD_ERR_HW_ERROR,
+ FW_UPLOAD_ERR_TIMEOUT,
+ FW_UPLOAD_ERR_CANCELED,
+ FW_UPLOAD_ERR_BUSY,
+ FW_UPLOAD_ERR_INVALID_SIZE,
+ FW_UPLOAD_ERR_RW_ERROR,
+ FW_UPLOAD_ERR_WEAROUT,
+ FW_UPLOAD_ERR_MAX
+};
+
+struct fw_upload {
+ void *dd_handle; /* reference to parent driver */
+ void *priv; /* firmware loader private fields */
+};
+
+/**
+ * struct fw_upload_ops - device specific operations to support firmware upload
+ * @prepare: Required: Prepare secure update
+ * @write: Required: The write() op receives the remaining
+ * size to be written and must return the actual
+ * size written or a negative error code. The write()
+ * op will be called repeatedly until all data is
+ * written.
+ * @poll_complete: Required: Check for the completion of the
+ * HW authentication/programming process.
+ * @cancel: Required: Request cancellation of update. This op
+ * is called from the context of a different kernel
+ * thread, so race conditions need to be considered.
+ * @cleanup: Optional: Complements the prepare()
+ * function and is called at the completion
+ * of the update, on success or failure, if the
+ * prepare function succeeded.
+ */
+struct fw_upload_ops {
+ enum fw_upload_err (*prepare)(struct fw_upload *fw_upload,
+ const u8 *data, u32 size);
+ enum fw_upload_err (*write)(struct fw_upload *fw_upload,
+ const u8 *data, u32 offset,
+ u32 size, u32 *written);
+ enum fw_upload_err (*poll_complete)(struct fw_upload *fw_upload);
+ void (*cancel)(struct fw_upload *fw_upload);
+ void (*cleanup)(struct fw_upload *fw_upload);
+};
+
struct module;
struct device;
@@ -34,7 +92,7 @@ static inline bool firmware_request_builtin(struct firmware *fw,
}
#endif
-#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
+#if IS_REACHABLE(CONFIG_FW_LOADER)
int request_firmware(const struct firmware **fw, const char *name,
struct device *device);
int firmware_request_nowarn(const struct firmware **fw, const char *name,
@@ -112,6 +170,30 @@ static inline int request_partial_firmware_into_buf
#endif
+#ifdef CONFIG_FW_UPLOAD
+
+struct fw_upload *
+firmware_upload_register(struct module *module, struct device *parent,
+ const char *name, const struct fw_upload_ops *ops,
+ void *dd_handle);
+void firmware_upload_unregister(struct fw_upload *fw_upload);
+
+#else
+
+static inline struct fw_upload *
+firmware_upload_register(struct module *module, struct device *parent,
+ const char *name, const struct fw_upload_ops *ops,
+ void *dd_handle)
+{
+ return ERR_PTR(-EINVAL);
+}
+
+static inline void firmware_upload_unregister(struct fw_upload *fw_upload)
+{
+}
+
+#endif
+
int firmware_request_cache(struct device *device, const char *name);
#endif
diff --git a/include/linux/firmware/cirrus/cs_dsp.h b/include/linux/firmware/cirrus/cs_dsp.h
index 9ad9eaaaa552..30055706cce2 100644
--- a/include/linux/firmware/cirrus/cs_dsp.h
+++ b/include/linux/firmware/cirrus/cs_dsp.h
@@ -11,6 +11,11 @@
#ifndef __CS_DSP_H
#define __CS_DSP_H
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/list.h>
+#include <linux/regmap.h>
+
#define CS_ADSP2_REGION_0 BIT(0)
#define CS_ADSP2_REGION_1 BIT(1)
#define CS_ADSP2_REGION_2 BIT(2)
@@ -49,48 +54,50 @@ struct cs_dsp_region {
* struct cs_dsp_alg_region - Describes a logical algorithm region in DSP address space
* @list: List node for internal use
* @alg: Algorithm id
+ * @ver: Expected algorithm version
* @type: Memory region type
* @base: Address of region
*/
struct cs_dsp_alg_region {
struct list_head list;
unsigned int alg;
+ unsigned int ver;
int type;
unsigned int base;
};
/**
* struct cs_dsp_coeff_ctl - Describes a coefficient control
+ * @list: List node for internal use
+ * @dsp: DSP instance associated with this control
+ * @cache: Cached value of the control
* @fw_name: Name of the firmware
* @subname: Name of the control parsed from the WMFW
* @subname_len: Length of subname
- * @alg_region: Logical region associated with this control
- * @dsp: DSP instance associated with this control
- * @enabled: Flag indicating whether control is enabled
- * @list: List node for internal use
- * @cache: Cached value of the control
- * @offset: Offset of control within alg_region
- * @len: Length of the cached value
- * @set: Flag indicating the value has been written by the user
- * @flags: Bitfield of WMFW_CTL_FLAG_ control flags defined in wmfw.h
+ * @offset: Offset of control within alg_region in words
+ * @len: Length of the cached value in bytes
* @type: One of the WMFW_CTL_TYPE_ control types defined in wmfw.h
+ * @flags: Bitfield of WMFW_CTL_FLAG_ control flags defined in wmfw.h
+ * @set: Flag indicating the value has been written by the user
+ * @enabled: Flag indicating whether control is enabled
+ * @alg_region: Logical region associated with this control
* @priv: For use by the client
*/
struct cs_dsp_coeff_ctl {
+ struct list_head list;
+ struct cs_dsp *dsp;
+ void *cache;
const char *fw_name;
/* Subname is needed to match with firmware */
const char *subname;
unsigned int subname_len;
- struct cs_dsp_alg_region alg_region;
- struct cs_dsp *dsp;
- unsigned int enabled:1;
- struct list_head list;
- void *cache;
unsigned int offset;
size_t len;
- unsigned int set:1;
- unsigned int flags;
unsigned int type;
+ unsigned int flags;
+ unsigned int set:1;
+ unsigned int enabled:1;
+ struct cs_dsp_alg_region alg_region;
void *priv;
};
@@ -180,7 +187,8 @@ struct cs_dsp {
* struct cs_dsp_client_ops - client callbacks
* @control_add: Called under the pwr_lock when a control is created
* @control_remove: Called under the pwr_lock when a control is destroyed
- * @post_run: Called under the pwr_lock by cs_dsp_run()
+ * @pre_run: Called under the pwr_lock by cs_dsp_run() before the core is started
+ * @post_run: Called under the pwr_lock by cs_dsp_run() after the core is started
* @post_stop: Called under the pwr_lock by cs_dsp_stop()
* @watchdog_expired: Called when a watchdog expiry is detected
*
@@ -190,6 +198,7 @@ struct cs_dsp {
struct cs_dsp_client_ops {
int (*control_add)(struct cs_dsp_coeff_ctl *ctl);
void (*control_remove)(struct cs_dsp_coeff_ctl *ctl);
+ int (*pre_run)(struct cs_dsp *dsp);
int (*post_run)(struct cs_dsp *dsp);
void (*post_stop)(struct cs_dsp *dsp);
void (*watchdog_expired)(struct cs_dsp *dsp);
@@ -223,8 +232,10 @@ void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root);
void cs_dsp_cleanup_debugfs(struct cs_dsp *dsp);
int cs_dsp_coeff_write_acked_control(struct cs_dsp_coeff_ctl *ctl, unsigned int event_id);
-int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, const void *buf, size_t len);
-int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len);
+int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+ const void *buf, size_t len);
+int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+ void *buf, size_t len);
struct cs_dsp_coeff_ctl *cs_dsp_get_ctl(struct cs_dsp *dsp, const char *name, int type,
unsigned int alg);
diff --git a/include/linux/firmware/cirrus/wmfw.h b/include/linux/firmware/cirrus/wmfw.h
index a19bf7c6fc8b..74e5a4f6c13a 100644
--- a/include/linux/firmware/cirrus/wmfw.h
+++ b/include/linux/firmware/cirrus/wmfw.h
@@ -29,6 +29,7 @@
#define WMFW_CTL_TYPE_ACKED 0x1000 /* acked control */
#define WMFW_CTL_TYPE_HOSTEVENT 0x1001 /* event control */
#define WMFW_CTL_TYPE_HOST_BUFFER 0x1002 /* host buffer pointer */
+#define WMFW_CTL_TYPE_FWEVENT 0x1004 /* firmware event control */
struct wmfw_header {
char magic[4];
diff --git a/include/linux/firmware/imx/svc/rm.h b/include/linux/firmware/imx/svc/rm.h
index 456b6a59d29b..31456f897aa9 100644
--- a/include/linux/firmware/imx/svc/rm.h
+++ b/include/linux/firmware/imx/svc/rm.h
@@ -59,11 +59,16 @@ enum imx_sc_rm_func {
#if IS_ENABLED(CONFIG_IMX_SCU)
bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource);
+int imx_sc_rm_get_resource_owner(struct imx_sc_ipc *ipc, u16 resource, u8 *pt);
#else
static inline bool
imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
{
return true;
}
+static inline int imx_sc_rm_get_resource_owner(struct imx_sc_ipc *ipc, u16 resource, u8 *pt)
+{
+ return -EOPNOTSUPP;
+}
#endif
#endif
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index c3e5ab014caf..aad497a9ad8b 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -321,8 +321,6 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_ECC_DBE \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_ECC_DBE)
-#endif
-
/**
* Request INTEL_SIP_SMC_RSU_NOTIFY
*
@@ -404,3 +402,22 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY 18
#define INTEL_SIP_SMC_RSU_MAX_RETRY \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY)
+
+/**
+ * Request INTEL_SIP_SMC_FIRMWARE_VERSION
+ *
+ * Sync call used to query the version of running firmware
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FIRMWARE_VERSION
+ * a1-a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_STATUS_ERROR
+ * a1 running firmware version
+ */
+#define INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION 31
+#define INTEL_SIP_SMC_FIRMWARE_VERSION \
+ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION)
+
+#endif
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 19781b0f6429..18c1841fdb1f 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -104,6 +104,9 @@ struct stratix10_svc_chan;
*
* @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
* is SVC_STATUS_OK or SVC_STATUS_ERROR
+ *
+ * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
+ * is SVC_STATUS_OK or SVC_STATUS_ERROR
*/
enum stratix10_svc_command_code {
COMMAND_NOOP = 0,
@@ -117,6 +120,7 @@ enum stratix10_svc_command_code {
COMMAND_RSU_RETRY,
COMMAND_RSU_MAX_RETRY,
COMMAND_RSU_DCMF_VERSION,
+ COMMAND_FIRMWARE_VERSION,
};
/**
diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
new file mode 100644
index 000000000000..28fd313340b8
--- /dev/null
+++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ */
+
+#ifndef MTK_ADSP_IPC_H
+#define MTK_ADSP_IPC_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/mailbox_controller.h>
+#include <linux/mailbox_client.h>
+
+#define MTK_ADSP_IPC_REQ 0
+#define MTK_ADSP_IPC_RSP 1
+#define MTK_ADSP_IPC_OP_REQ 0x1
+#define MTK_ADSP_IPC_OP_RSP 0x2
+
+enum {
+ MTK_ADSP_MBOX_REPLY,
+ MTK_ADSP_MBOX_REQUEST,
+ MTK_ADSP_MBOX_NUM,
+};
+
+struct mtk_adsp_ipc;
+
+struct mtk_adsp_ipc_ops {
+ void (*handle_reply)(struct mtk_adsp_ipc *ipc);
+ void (*handle_request)(struct mtk_adsp_ipc *ipc);
+};
+
+struct mtk_adsp_chan {
+ struct mtk_adsp_ipc *ipc;
+ struct mbox_client cl;
+ struct mbox_chan *ch;
+ char *name;
+ int idx;
+};
+
+struct mtk_adsp_ipc {
+ struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
+ struct device *dev;
+ struct mtk_adsp_ipc_ops *ops;
+ void *private_data;
+};
+
+static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data)
+{
+ if (!ipc)
+ return;
+
+ ipc->private_data = data;
+}
+
+static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
+{
+ if (!ipc)
+ return NULL;
+
+ return ipc->private_data;
+}
+
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op);
+
+#endif /* MTK_ADSP_IPC_H */
diff --git a/include/linux/firmware/xlnx-event-manager.h b/include/linux/firmware/xlnx-event-manager.h
new file mode 100644
index 000000000000..82e8254b0f80
--- /dev/null
+++ b/include/linux/firmware/xlnx-event-manager.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _FIRMWARE_XLNX_EVENT_MANAGER_H_
+#define _FIRMWARE_XLNX_EVENT_MANAGER_H_
+
+#include <linux/firmware/xlnx-zynqmp.h>
+
+#define CB_MAX_PAYLOAD_SIZE (4U) /*In payload maximum 32bytes */
+
+/************************** Exported Function *****************************/
+
+typedef void (*event_cb_func_t)(const u32 *payload, void *data);
+
+#if IS_REACHABLE(CONFIG_XLNX_EVENT_MANAGER)
+int xlnx_register_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+ const u32 event, const bool wake,
+ event_cb_func_t cb_fun, void *data);
+
+int xlnx_unregister_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+ const u32 event, event_cb_func_t cb_fun, void *data);
+#else
+static inline int xlnx_register_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+ const u32 event, const bool wake,
+ event_cb_func_t cb_fun, void *data)
+{
+ return -ENODEV;
+}
+
+static inline int xlnx_unregister_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+ const u32 event, event_cb_func_t cb_fun, void *data)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* _FIRMWARE_XLNX_EVENT_MANAGER_H_ */
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 47fd4e52a423..1ec73d5352c3 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -2,7 +2,7 @@
/*
* Xilinx Zynq MPSoC Firmware layer
*
- * Copyright (C) 2014-2019 Xilinx
+ * Copyright (C) 2014-2021 Xilinx
*
* Michal Simek <michal.simek@xilinx.com>
* Davorin Mista <davorin.mista@aggios.com>
@@ -29,6 +29,11 @@
/* SMC SIP service Call Function Identifier Prefix */
#define PM_SIP_SVC 0xC2000000
+
+/* PM API versions */
+#define PM_API_VERSION_2 2
+
+/* ATF only commands */
#define PM_GET_TRUSTZONE_VERSION 0xa03
#define PM_SET_SUSPEND_MODE 0xa02
#define GET_CALLBACK_DATA 0xa01
@@ -64,8 +69,23 @@
#define XILINX_ZYNQMP_PM_FPGA_FULL 0x0U
#define XILINX_ZYNQMP_PM_FPGA_PARTIAL BIT(0)
+/*
+ * Node IDs for the Error Events.
+ */
+#define EVENT_ERROR_PMC_ERR1 (0x28100000U)
+#define EVENT_ERROR_PMC_ERR2 (0x28104000U)
+#define EVENT_ERROR_PSM_ERR1 (0x28108000U)
+#define EVENT_ERROR_PSM_ERR2 (0x2810C000U)
+
+enum pm_api_cb_id {
+ PM_INIT_SUSPEND_CB = 30,
+ PM_ACKNOWLEDGE_CB = 31,
+ PM_NOTIFY_CB = 32,
+};
+
enum pm_api_id {
PM_GET_API_VERSION = 1,
+ PM_REGISTER_NOTIFIER = 5,
PM_SYSTEM_SHUTDOWN = 12,
PM_REQUEST_NODE = 13,
PM_RELEASE_NODE = 14,
@@ -78,6 +98,7 @@ enum pm_api_id {
PM_FPGA_LOAD = 22,
PM_FPGA_GET_STATUS = 23,
PM_GET_CHIPID = 24,
+ PM_SECURE_SHA = 26,
PM_PINCTRL_REQUEST = 28,
PM_PINCTRL_RELEASE = 29,
PM_PINCTRL_GET_FUNCTION = 30,
@@ -126,6 +147,11 @@ enum pm_ioctl_id {
/* Set healthy bit value */
IOCTL_SET_BOOT_HEALTH_STATUS = 17,
IOCTL_OSPI_MUX_SELECT = 21,
+ /* Register SGI to ATF */
+ IOCTL_REGISTER_SGI = 25,
+ /* Runtime feature configuration */
+ IOCTL_SET_FEATURE_CONFIG = 26,
+ IOCTL_GET_FEATURE_CONFIG = 27,
};
enum pm_query_id {
@@ -359,6 +385,14 @@ enum ospi_mux_select_type {
PM_OSPI_MUX_SEL_LINEAR = 1,
};
+enum pm_feature_config_id {
+ PM_FEATURE_INVALID = 0,
+ PM_FEATURE_OVERTEMP_STATUS = 1,
+ PM_FEATURE_OVERTEMP_VALUE = 2,
+ PM_FEATURE_EXTWDT_STATUS = 3,
+ PM_FEATURE_EXTWDT_VALUE = 4,
+};
+
/**
* struct zynqmp_pm_query_data - PM query data
* @qid: query ID
@@ -410,6 +444,7 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
const u32 qos,
const enum zynqmp_pm_request_ack ack);
int zynqmp_pm_aes_engine(const u64 address, u32 *out);
+int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags);
int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
int zynqmp_pm_fpga_get_status(u32 *value);
int zynqmp_pm_write_ggs(u32 index, u32 value);
@@ -427,6 +462,12 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
u32 value);
int zynqmp_pm_load_pdi(const u32 src, const u64 address);
+int zynqmp_pm_register_notifier(const u32 node, const u32 event,
+ const u32 wake, const u32 enable);
+int zynqmp_pm_feature(const u32 api_id);
+int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id);
+int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value);
+int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload);
#else
static inline int zynqmp_pm_get_api_version(u32 *version)
{
@@ -581,6 +622,12 @@ static inline int zynqmp_pm_aes_engine(const u64 address, u32 *out)
return -ENODEV;
}
+static inline int zynqmp_pm_sha_hash(const u64 address, const u32 size,
+ const u32 flags)
+{
+ return -ENODEV;
+}
+
static inline int zynqmp_pm_fpga_load(const u64 address, const u32 size,
const u32 flags)
{
@@ -637,6 +684,11 @@ static inline int zynqmp_pm_pinctrl_get_function(const u32 pin, u32 *id)
return -ENODEV;
}
+static inline int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id)
+{
+ return -ENODEV;
+}
+
static inline int zynqmp_pm_pinctrl_set_function(const u32 pin, const u32 id)
{
return -ENODEV;
@@ -658,6 +710,29 @@ static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address)
{
return -ENODEV;
}
+
+static inline int zynqmp_pm_register_notifier(const u32 node, const u32 event,
+ const u32 wake, const u32 enable)
+{
+ return -ENODEV;
+}
+
+static inline int zynqmp_pm_feature(const u32 api_id)
+{
+ return -ENODEV;
+}
+
+static inline int zynqmp_pm_set_feature_config(enum pm_feature_config_id id,
+ u32 value)
+{
+ return -ENODEV;
+}
+
+static inline int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
+ u32 *payload)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
diff --git a/include/linux/fortify-strin