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2019-12-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds19-86/+154
Pull networking fixes from David Miller: 1) More jumbo frame fixes in r8169, from Heiner Kallweit. 2) Fix bpf build in minimal configuration, from Alexei Starovoitov. 3) Use after free in slcan driver, from Jouni Hogander. 4) Flower classifier port ranges don't work properly in the HW offload case, from Yoshiki Komachi. 5) Use after free in hns3_nic_maybe_stop_tx(), from Yunsheng Lin. 6) Out of bounds access in mqprio_dump(), from Vladyslav Tarasiuk. 7) Fix flow dissection in dsa TX path, from Alexander Lobakin. 8) Stale syncookie timestampe fixes from Guillaume Nault. [ Did an evil merge to silence a warning introduced by this pull - Linus ] * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (84 commits) r8169: fix rtl_hw_jumbo_disable for RTL8168evl net_sched: validate TCA_KIND attribute in tc_chain_tmplt_add() r8169: add missing RX enabling for WoL on RTL8125 vhost/vsock: accept only packets with the right dst_cid net: phy: dp83867: fix hfs boot in rgmii mode net: ethernet: ti: cpsw: fix extra rx interrupt inet: protect against too small mtu values. gre: refetch erspan header from skb->data after pskb_may_pull() pppoe: remove redundant BUG_ON() check in pppoe_pernet tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE() tcp: tighten acceptance of ACKs not matching a child socket tcp: fix rejected syncookies due to stale timestamps lpc_eth: kernel BUG on remove tcp: md5: fix potential overestimation of TCP option space net: sched: allow indirect blocks to bind to clsact in TC net: core: rename indirect block ingress cb function net-sysfs: Call dev_hold always in netdev_queue_add_kobject net: dsa: fix flow dissection on Tx path net/tls: Fix return values to avoid ENOTSUPP net: avoid an indirect call in ____sys_recvmsg() ...
2019-12-06net/tls: Fix return values to avoid ENOTSUPPValentin Vidic1-6/+2
ENOTSUPP is not available in userspace, for example: setsockopt failed, 524, Unknown error 524 Signed-off-by: Valentin Vidic <vvidic@valentin-vidic.from.hr> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-04selftests/bpf: Add a fexit/bpf2bpf test with target bpf prog no calleesYonghong Song3-19/+81
The existing fexit_bpf2bpf test covers the target progrm with callees. This patch added a test for the target program without callees. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20191205010607.177904-1-yhs@fb.com
2019-12-04selftests: add epoll selftestsHeiher4-0/+3083
This adds the promised selftest for epoll. It will verify the wakeups of epoll. Including leaf and nested mode, epoll_wait() and poll() and multi-threads. Link: http://lkml.kernel.org/r/20191009121518.4027-1-r@hev.cc Signed-off-by: hev <r@hev.cc> Reviewed-by: Roman Penyaev <rpenyaev@suse.de> Cc: Jason Baron <jbaron@akamai.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-12-04selftests/bpf: De-flake test_tcpbpfStanislav Fomichev3-7/+20
It looks like BPF program that handles BPF_SOCK_OPS_STATE_CB state can race with the bpf_map_lookup_elem("global_map"); I sometimes see the failures in this test and re-running helps. Since we know that we expect the callback to be called 3 times (one time for listener socket, two times for both ends of the connection), let's export this number and add simple retry logic around that. Also, let's make EXPECT_EQ() not return on failure, but continue evaluating all conditions; that should make potential debugging easier. With this fix in place I don't observe the flakiness anymore. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Cc: Lawrence Brakmo <brakmo@fb.com> Link: https://lore.kernel.org/bpf/20191204190955.170934-1-sdf@google.com
2019-12-04selftests/bpf: Bring back c++ include/link testStanislav Fomichev5-6/+7
Commit 5c26f9a78358 ("libbpf: Don't use cxx to test_libpf target") converted existing c++ test to c. We still want to include and link against libbpf from c++ code, so reinstate this test back, this time in a form of a selftest with a clear comment about its purpose. v2: * -lelf -> $(LDLIBS) (Andrii Nakryiko) Fixes: 5c26f9a78358 ("libbpf: Don't use cxx to test_libpf target") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20191202215931.248178-1-sdf@google.com
2019-12-04selftests/bpf: Don't hard-code root cgroup idStanislav Fomichev1-1/+1
Commit 40430452fd5d ("kernfs: use 64bit inos if ino_t is 64bit") changed the way cgroup ids are exposed to the userspace. Instead of assuming fixed root id, let's query it. Fixes: 40430452fd5d ("kernfs: use 64bit inos if ino_t is 64bit") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20191202200143.250793-1-sdf@google.com
2019-12-03Merge tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds1-0/+1
Pull PCI updates from Bjorn Helgaas: "Enumeration: - Warn if a host bridge has no NUMA info (Yunsheng Lin) - Add PCI_STD_NUM_BARS for the number of standard BARs (Denis Efremov) Resource management: - Fix boot-time Embedded Controller GPE storm caused by incorrect resource assignment after ACPI Bus Check Notification (Mika Westerberg) - Protect pci_reassign_bridge_resources() against concurrent addition/removal (Benjamin Herrenschmidt) - Fix bridge dma_ranges resource list cleanup (Rob Herring) - Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters to control the MMIO and prefetchable MMIO window sizes of hotplug bridges independently (Nicholas Johnson) - Fix MMIO/MMIO_PREF window assignment that assigned more space than desired (Nicholas Johnson) - Only enforce bus numbers from bridge EA if the bridge has EA devices downstream (Subbaraya Sundeep) - Consolidate DT "dma-ranges" parsing and convert all host drivers to use shared parsing (Rob Herring) Error reporting: - Restore AER capability after resume (Mayurkumar Patel) - Add PoisonTLPBlocked AER counter (Rajat Jain) - Use for_each_set_bit() to simplify AER code (Andy Shevchenko) - Fix AER kernel-doc (Andy Shevchenko) - Add "pcie_ports=dpc-native" parameter to allow native use of DPC even if platform didn't grant control over AER (Olof Johansson) Hotplug: - Avoid returning prematurely from sysfs requests to enable or disable a PCIe hotplug slot (Lukas Wunner) - Don't disable interrupts twice when suspending hotplug ports (Mika Westerberg) - Fix deadlocks when PCIe ports are hot-removed while suspended (Mika Westerberg) Power management: - Remove unnecessary ASPM locking (Bjorn Helgaas) - Add support for disabling L1 PM Substates (Heiner Kallweit) - Allow re-enabling Clock PM after it has been disabled (Heiner Kallweit) - Add sysfs attributes for controlling ASPM link states (Heiner Kallweit) - Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl" sysfs files (Heiner Kallweit) - Avoid AMD FCH XHCI USB PME# from D0 defect that prevents wakeup on USB 2.0 or 1.1 connect events (Kai-Heng Feng) - Move power state check out of pci_msi_supported() (Bjorn Helgaas) - Fix incorrect MSI-X masking on resume and revert related nvme quirk for Kingston NVME SSD running FW E8FK11.T (Jian-Hong Pan) - Always return devices to D0 when thawing to fix hibernation with drivers like mlx4 that used legacy power management (previously we only did it for drivers with new power management ops) (Dexuan Cui) - Clear PCIe PME Status even for legacy power management (Bjorn Helgaas) - Fix PCI PM documentation errors (Bjorn Helgaas) - Use dev_printk() for more power management messages (Bjorn Helgaas) - Apply D2 delay as milliseconds, not microseconds (Bjorn Helgaas) - Convert xen-platform from legacy to generic power management (Bjorn Helgaas) - Removed unused .resume_early() and .suspend_late() legacy power management hooks (Bjorn Helgaas) - Rearrange power management code for clarity (Rafael J. Wysocki) - Decode power states more clearly ("4" or "D4" really refers to "D3cold") (Bjorn Helgaas) - Notice when reading PM Control register returns an error (~0) instead of interpreting it as being in D3hot (Bjorn Helgaas) - Add missing link delays required by the PCIe spec (Mika Westerberg) Virtualization: - Move pci_prg_resp_pasid_required() to CONFIG_PCI_PRI (Bjorn Helgaas) - Allow VFs to use PRI (the PF PRI is shared by the VFs, but the code previously didn't recognize that) (Kuppuswamy Sathyanarayanan) - Allow VFs to use PASID (the PF PASID capability is shared by the VFs, but the code previously didn't recognize that) (Kuppuswamy Sathyanarayanan) - Disconnect PF and VF ATS enablement, since ATS in PFs and associated VFs can be enabled independently (Kuppuswamy Sathyanarayanan) - Cache PRI and PASID capability offsets (Kuppuswamy Sathyanarayanan) - Cache the PRI PRG Response PASID Required bit (Bjorn Helgaas) - Consolidate ATS declarations in linux/pci-ats.h (Krzysztof Wilczynski) - Remove unused PRI and PASID stubs (Bjorn Helgaas) - Removed unnecessary EXPORT_SYMBOL_GPL() from ATS, PRI, and PASID interfaces that are only used by built-in IOMMU drivers (Bjorn Helgaas) - Hide PRI and PASID state restoration functions used only inside the PCI core (Bjorn Helgaas) - Add a DMA alias quirk for the Intel VCA NTB (Slawomir Pawlowski) - Serialize sysfs sriov_numvfs reads vs writes (Pierre Crégut) - Update Cavium ACS quirk for ThunderX2 and ThunderX3 (George Cherian) - Fix the UPDCR register address in the Intel ACS quirk (Steffen Liebergeld) - Unify ACS quirk implementations (Bjorn Helgaas) Amlogic Meson host bridge driver: - Fix meson PERST# GPIO polarity problem (Remi Pommarel) - Add DT bindings for Amlogic Meson G12A (Neil Armstrong) - Fix meson clock names to match DT bindings (Neil Armstrong) - Add meson support for Amlogic G12A SoC with separate shared PHY (Neil Armstrong) - Add meson extended PCIe PHY functions for Amlogic G12A USB3+PCIe combo PHY (Neil Armstrong) - Add arm64 DT for Amlogic G12A PCIe controller node (Neil Armstrong) - Add commented-out description of VIM3 USB3/PCIe mux in arm64 DT (Neil Armstrong) Broadcom iProc host bridge driver: - Invalidate iProc PAXB address mapping before programming it (Abhishek Shah) - Fix iproc-msi and mvebu __iomem annotations (Ben Dooks) Cadence host bridge driver: - Refactor Cadence PCIe host controller to use as a library for both host and endpoint (Tom Joseph) Freescale Layerscape host bridge driver: - Add layerscape LS1028a support (Xiaowei Bao) Intel VMD host bridge driver: - Add VMD bus 224-255 restriction decode (Jon Derrick) - Add VMD 8086:9A0B device ID (Jon Derrick) - Remove Keith from VMD maintainer list (Keith Busch) Marvell ARMADA 3700 / Aardvark host bridge driver: - Use LTSSM state to build link training flag since Aardvark doesn't implement the Link Training bit (Remi Pommarel) - Delay before training Aardvark link in case PERST# was asserted before the driver probe (Remi Pommarel) - Fix Aardvark issues with Root Control reads and writes (Remi Pommarel) - Don't rely on jiffies in Aardvark config access path since interrupts may be disabled (Remi Pommarel) - Fix Aardvark big-endian support (Grzegorz Jaszczyk) Marvell ARMADA 370 / XP host bridge driver: - Make mvebu_pci_bridge_emul_ops static (Ben Dooks) Microsoft Hyper-V host bridge driver: - Add hibernation support for Hyper-V virtual PCI devices (Dexuan Cui) - Track Hyper-V pci_protocol_version per-hbus, not globally (Dexuan Cui) - Avoid kmemleak false positive on hv hbus buffer (Dexuan Cui) Mobiveil host bridge driver: - Change mobiveil csr_read()/write() function names that conflict with riscv arch functions (Kefeng Wang) NVIDIA Tegra host bridge driver: - Fix Tegra CLKREQ dependency programming (Vidya Sagar) Renesas R-Car host bridge driver: - Remove unnecessary header include from rcar (Andrew Murray) - Tighten register index checking for rcar inbound range programming (Marek Vasut) - Fix rcar inbound range alignment calculation to improve packing of multiple entries (Marek Vasut) - Update rcar MACCTLR setting to match documentation (Yoshihiro Shimoda) - Clear bit 0 of MACCTLR before PCIETCTLR.CFINIT per manual (Yoshihiro Shimoda) - Add Marek Vasut and Yoshihiro Shimoda as R-Car maintainers (Simon Horman) Rockchip host bridge driver: - Make rockchip 0V9 and 1V8 power regulators non-optional (Robin Murphy) Socionext UniPhier host bridge driver: - Set uniphier to host (RC) mode always (Kunihiko Hayashi) Endpoint drivers: - Fix endpoint driver sign extension problem when shifting page number to phys_addr_t (Alan Mikhak) Misc: - Add NumaChip SPDX header (Krzysztof Wilczynski) - Replace EXTRA_CFLAGS with ccflags-y (Krzysztof Wilczynski) - Remove unused includes (Krzysztof Wilczynski) - Removed unused sysfs attribute groups (Ben Dooks) - Remove PTM and ASPM dependencies on PCIEPORTBUS (Bjorn Helgaas) - Add PCIe Link Control 2 register field definitions to replace magic numbers in AMDGPU and Radeon CIK/SI (Bjorn Helgaas) - Fix incorrect Link Control 2 Transmit Margin usage in AMDGPU and Radeon CIK/SI PCIe Gen3 link training (Bjorn Helgaas) - Use pcie_capability_read_word() instead of pci_read_config_word() in AMDGPU and Radeon CIK/SI (Frederick Lawler) - Remove unused pci_irq_get_node() Greg Kroah-Hartman) - Make asm/msi.h mandatory and simplify PCI_MSI_IRQ_DOMAIN Kconfig (Palmer Dabbelt, Michal Simek) - Read all 64 bits of Switchtec part_event_bitmap (Logan Gunthorpe) - Fix erroneous intel-iommu dependency on CONFIG_AMD_IOMMU (Bjorn Helgaas) - Fix bridge emulation big-endian support (Grzegorz Jaszczyk) - Fix dwc find_next_bit() usage (Niklas Cassel) - Fix pcitest.c fd leak (Hewenliang) - Fix typos and comments (Bjorn Helgaas) - Fix Kconfig whitespace errors (Krzysztof Kozlowski)" * tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (160 commits) PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist asm-generic: Make msi.h a mandatory include/asm header Revert "nvme: Add quirk for Kingston NVME SSD running FW E8FK11.T" PCI/MSI: Fix incorrect MSI-X masking on resume PCI/MSI: Move power state check out of pci_msi_supported() PCI/MSI: Remove unused pci_irq_get_node() PCI: hv: Avoid a kmemleak false positive caused by the hbus buffer PCI: hv: Change pci_protocol_version to per-hbus PCI: hv: Add hibernation support PCI: hv: Reorganize the code in preparation of hibernation MAINTAINERS: Remove Keith from VMD maintainer PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code PCI/ASPM: Add sysfs attributes for controlling ASPM link states PCI: Fix indentation drm/radeon: Prefer pcie_capability_read_word() drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/radeon: Correct Transmit Margin masks drm/amdgpu: Prefer pcie_capability_read_word() PCI: uniphier: Set mode register to host mode drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions ...
2019-12-02Merge tag 'linux-kselftest-5.5-rc1-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftestLinus Torvalds1-3/+2
Pull more kselftest fixes from Shuah Khan: "This second Kselftest fixes update for Linux 5.5-rc1 consists of an urgent revert to fix regression in CI coverage" * tag 'linux-kselftest-5.5-rc1-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: Revert "selftests: Fix O= and KBUILD_OUTPUT handling for relative paths"
2019-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller7-47/+43
Daniel Borkmann says: ==================== pull-request: bpf 2019-12-02 The following pull-request contains BPF updates for your *net* tree. We've added 10 non-merge commits during the last 6 day(s) which contain a total of 10 files changed, 60 insertions(+), 51 deletions(-). The main changes are: 1) Fix vmlinux BTF generation for binutils pre v2.25, from Stanislav Fomichev. 2) Fix libbpf global variable relocation to take symbol's st_value offset into account, from Andrii Nakryiko. 3) Fix libbpf build on powerpc where check_abi target fails due to different readelf output format, from Aurelien Jarno. 4) Don't set BPF insns RO for the case when they are JITed in order to avoid fragmenting the direct map, from Daniel Borkmann. 5) Fix static checker warning in btf_distill_func_proto() as well as a build error due to empty enum when BPF is compiled out, from Alexei Starovoitov. 6) Fix up generation of bpf_helper_defs.h for perf, from Arnaldo Carvalho de Melo. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-02libbpf: Fix readelf output parsing on powerpc with recent binutilsAurelien Jarno1-2/+2
On powerpc with recent versions of binutils, readelf outputs an extra field when dumping the symbols of an object file. For example: 35: 0000000000000838 96 FUNC LOCAL DEFAULT [<localentry>: 8] 1 btf_is_struct The extra "[<localentry>: 8]" prevents the GLOBAL_SYM_COUNT variable to be computed correctly and causes the check_abi target to fail. Fix that by looking for the symbol name in the last field instead of the 8th one. This way it should also cope with future extra fields. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/bpf/20191201195728.4161537-1-aurelien@aurel32.net
2019-12-01Merge branch 'akpm' (patches from Andrew)Linus Torvalds2-0/+37
Merge updates from Andrew Morton: "Incoming: - a small number of updates to scripts/, ocfs2 and fs/buffer.c - most of MM I still have quite a lot of material (mostly not MM) staged after linux-next due to -next dependencies. I'll send those across next week as the preprequisites get merged up" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (135 commits) mm/page_io.c: annotate refault stalls from swap_readpage mm/Kconfig: fix trivial help text punctuation mm/Kconfig: fix indentation mm/memory_hotplug.c: remove __online_page_set_limits() mm: fix typos in comments when calling __SetPageUptodate() mm: fix struct member name in function comments mm/shmem.c: cast the type of unmap_start to u64 mm: shmem: use proper gfp flags for shmem_writepage() mm/shmem.c: make array 'values' static const, makes object smaller userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK fs/userfaultfd.c: wp: clear VM_UFFD_MISSING or VM_UFFD_WP during userfaultfd_register() userfaultfd: wrap the common dst_vma check into an inlined function userfaultfd: remove unnecessary WARN_ON() in __mcopy_atomic_hugetlb() userfaultfd: use vma_pagesize for all huge page size calculation mm/madvise.c: use PAGE_ALIGN[ED] for range checking mm/madvise.c: replace with page_size() in madvise_inject_error() mm/mmap.c: make vma_merge() comment more easy to understand mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops autonuma: reduce cache footprint when scanning page tables autonuma: fix watermark checking in migrate_balanced_pgdat() ...
2019-12-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds5-31/+122
Pull networking fixes from David Miller: 1) Fix several scatter gather list issues in kTLS code, from Jakub Kicinski. 2) macb driver device remove has to kill the hresp_err_tasklet. From Chuhong Yuan. 3) Several memory leak and reference count bug fixes in tipc, from Tung Nguyen. 4) Fix mlx5 build error w/o ipv6, from Yue Haibing. 5) Fix jumbo frame and other regressions in r8169, from Heiner Kallweit. 6) Undo some BUG_ON()'s and replace them with WARN_ON_ONCE and proper error propagation/handling. From Paolo Abeni. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (24 commits) openvswitch: remove another BUG_ON() openvswitch: drop unneeded BUG_ON() in ovs_flow_cmd_build_info() net: phy: realtek: fix using paged operations with RTL8105e / RTL8208 r8169: fix resume on cable plug-in r8169: fix jumbo configuration for RTL8168evl net: emulex: benet: indent a Kconfig depends continuation line selftests: forwarding: fix race between packet receive and tc check net: sched: fix `tc -s class show` no bstats on class with nolock subqueues net: ethernet: ti: ale: ensure vlan/mdb deleted when no members net/mlx5e: Fix build error without IPV6 selftests: pmtu: use -oneline for ip route list cache tipc: fix duplicate SYN messages under link congestion tipc: fix wrong timeout input for tipc_wait_for_cond() tipc: fix wrong socket reference counter after tipc_sk_timeout() returns tipc: fix potential memory leak in __tipc_sendmsg() net: macb: add missed tasklet_kill selftests: bpf: correct perror strings selftests: bpf: test_sockmap: handle file creation failures gracefully net/tls: use sg_next() to walk sg entries net/tls: remove the dead inplace_crypto code ...
2019-12-01Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-9/+85
Pull x86 fixes from Ingo Molnar: "Various fixes: - Fix the PAT performance regression that downgraded write-combining device memory regions to uncached. - There's been a number of bugs in 32-bit double fault handling - hopefully all fixed now. - Fix an LDT crash - Fix an FPU over-optimization that broke with GCC9 code optimizations. - Misc cleanups" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/pat: Fix off-by-one bugs in interval tree search x86/ioperm: Save an indentation level in tss_update_io_bitmap() x86/fpu: Don't cache access to fpu_fpregs_owner_ctx x86/entry/32: Remove unused 'restore_all_notrace' local label x86/ptrace: Document FSBASE and GSBASE ABI oddities x86/ptrace: Remove set_segment_reg() implementations for current x86/traps: die() instead of panicking on a double fault x86/doublefault/32: Rewrite the x86_32 #DF handler and unify with 64-bit x86/doublefault/32: Move #DF stack and TSS to cpu_entry_area x86/doublefault/32: Rename doublefault.c to doublefault_32.c x86/traps: Disentangle the 32-bit and 64-bit doublefault code lkdtm: Add a DOUBLE_FAULT crash type on x86 selftests/x86/single_step_syscall: Check SYSENTER directly x86/mm/32: Sync only to VMALLOC_END in vmalloc_sync_all()
2019-12-01Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds65-606/+2198
Pull perf fixes from Ingo Molnar: - Make /sys/devices/cpu/rdpmc based RDPMC enforcement more instantaneous - decoder: Update the Intel opcode map - Various tooling fixes, including a few late optimizations and cleanups. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) perf script: Fix invalid LBR/binary mismatch error perf script: Fix brstackinsn for AUXTRACE perf affinity: Add infrastructure to save/restore affinity perf pmu: Use file system cache to optimize sysfs access perf regs: Make perf_reg_name() return "unknown" instead of NULL perf diff: Use llabs() with 64-bit values perf diff: Use llabs() with 64-bit values perf/x86: Implement immediate enforcement of /sys/devices/cpu/rdpmc value of 0 perf tools: Allow to link with libbpf dynamicaly perf tests: Rename tests/map_groups.c to tests/maps.c perf tests: Rename thread-mg-share to thread-maps-share perf maps: Rename map_groups.h to maps.h perf maps: Rename 'mg' variables to 'maps' perf map_symbol: Rename ms->mg to ms->maps perf addr_location: Rename al->mg to al->maps perf thread: Rename thread->mg to thread->maps perf maps: Merge 'struct maps' with 'struct map_groups' x86/insn: perf tools: Add some more instructions to the new instructions test x86/insn: Add some more Intel instructions to the opcode map perf map: Remove unused functions ...
2019-12-01Merge tag 'platform-drivers-x86-v5.5-1' of git://git.infradead.org/linux-platform-drivers-x86Linus Torvalds4-261/+1090
Pull x86 platform driver updates from Andy Shevchenko: - New bootctl driver for Mellanox BlueField SoC. - New driver to support System76 laptops. - Temperature monitoring and fan control on Acer Aspire 7551 is now supported. - Previously the Huawei driver handled only hotkeys. After the conversion to WMI it has been expanded to support newer laptop models. - Big refactoring of intel-speed-select tools allows to use it on Intel CascadeLake-N systems. - Touchscreen support for ezpad 6 m4 and Schneider SCT101CTM tablets - Miscellaneous clean ups and fixes here and there. * tag 'platform-drivers-x86-v5.5-1' of git://git.infradead.org/linux-platform-drivers-x86: (59 commits) platform/x86: hp-wmi: Fix ACPI errors caused by passing 0 as input size platform/x86: hp-wmi: Fix ACPI errors caused by too small buffer platform/x86: intel_pmc_core: Add Comet Lake (CML) platform support to intel_pmc_core driver platform/x86: intel_pmc_core: Fix the SoC naming inconsistency platform/mellanox: Fix Kconfig indentation tools/power/x86/intel-speed-select: Display TRL buckets for just base config level tools/power/x86/intel-speed-select: Ignore missing config level platform/x86: touchscreen_dmi: Add info for the ezpad 6 m4 tablet tools/power/x86/intel-speed-select: Increment version tools/power/x86/intel-speed-select: Use core count for base-freq mask tools/power/x86/intel-speed-select: Support platform with limited Intel(R) Speed Select tools/power/x86/intel-speed-select: Use Frequency weight for CLOS tools/power/x86/intel-speed-select: Make CLOS frequency in MHz tools/power/x86/intel-speed-select: Use mailbox for CLOS_PM_QOS_CONFIG tools/power/x86/intel-speed-select: Auto mode for CLX tools/power/x86/intel-speed-select: Correct CLX-N frequency units tools/power/x86/intel-speed-select: Change display of "avx" to "avx2" tools/power/x86/intel-speed-select: Extend command set for perf-profile Add touchscreen platform data for the Schneider SCT101CTM tablet platform/x86: intel_int0002_vgpio: Pass irqchip when adding gpiochip ...
2019-12-01selftests: vm: add fragment CONFIG_TEST_VMALLOCAnders Roxell1-0/+1
When running test_vmalloc.sh smoke the following print out states that the fragment is missing. # ./test_vmalloc.sh: You must have the following enabled in your kernel: # CONFIG_TEST_VMALLOC=m Rework to add the fragment 'CONFIG_TEST_VMALLOC=m' to the config file. Link: http://lkml.kernel.org/r/20190916095217.19665-1-anders.roxell@linaro.org Fixes: a05ef00c9790 ("selftests/vm: add script helper for CONFIG_TEST_VMALLOC_MODULE") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Cc: Shuah Khan <shuah@kernel.org> Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-12-01memfd: add test for COW on MAP_PRIVATE and F_SEAL_FUTURE_WRITE mappingsJoel Fernandes (Google)1-0/+36
In this test, the parent and child both have writable private mappings. The test shows that without the patch in this series, the parent and child shared the same memory which is incorrect. In other words, COW needs to be triggered so any writes to child's copy stays local to the child. Link: http://lkml.kernel.org/r/20191107195355.80608-2-joel@joelfernandes.org Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Hugh Dickins <hughd@google.com> Cc: Nicolas Geoffray <ngeoffray@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-11-30Merge tag 'seccomp-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds1-1/+109
Pull seccomp updates from Kees Cook: "Mostly this is implementing the new flag SECCOMP_USER_NOTIF_FLAG_CONTINUE, but there are cleanups as well. - implement SECCOMP_USER_NOTIF_FLAG_CONTINUE (Christian Brauner) - fixes to selftests (Christian Brauner) - remove secure_computing() argument (Christian Brauner)" * tag 'seccomp-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: seccomp: rework define for SECCOMP_USER_NOTIF_FLAG_CONTINUE seccomp: fix SECCOMP_USER_NOTIF_FLAG_CONTINUE test seccomp: simplify secure_computing() seccomp: test SECCOMP_USER_NOTIF_FLAG_CONTINUE seccomp: add SECCOMP_USER_NOTIF_FLAG_CONTINUE seccomp: avoid overflow in implicit constant conversion
2019-11-30Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linuxLinus Torvalds1-0/+376
Pull Hyper-V updates from Sasha Levin: - support for new VMBus protocols (Andrea Parri) - hibernation support (Dexuan Cui) - latency testing framework (Branden Bonaby) - decoupling Hyper-V page size from guest page size (Himadri Pandya) * tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (22 commits) Drivers: hv: vmbus: Fix crash handler reset of Hyper-V synic drivers/hv: Replace binary semaphore with mutex drivers: iommu: hyperv: Make HYPERV_IOMMU only available on x86 HID: hyperv: Add the support of hibernation hv_balloon: Add the support of hibernation x86/hyperv: Implement hv_is_hibernation_supported() Drivers: hv: balloon: Remove dependencies on guest page size Drivers: hv: vmbus: Remove dependencies on guest page size x86: hv: Add function to allocate zeroed page for Hyper-V Drivers: hv: util: Specify ring buffer size using Hyper-V page size Drivers: hv: Specify receive buffer size using Hyper-V page size tools: hv: add vmbus testing tool drivers: hv: vmbus: Introduce latency testing video: hyperv: hyperv_fb: Support deferred IO for Hyper-V frame buffer driver video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host hv_netvsc: Add the support of hibernation hv_sock: Add the support of hibernation video: hyperv_fb: Add the support of hibernation scsi: storvsc: Add the support of hibernation Drivers: hv: vmbus: Add module parameter to cap the VMBus version ...
2019-11-30Merge tag 'powerpc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds14-218/+833
Pull powerpc updates from Michael Ellerman: "Highlights: - Infrastructure for secure boot on some bare metal Power9 machines. The firmware support is still in development, so the code here won't actually activate secure boot on any existing systems. - A change to xmon (our crash handler / pseudo-debugger) to restrict it to read-only mode when the kernel is lockdown'ed, otherwise it's trivial to drop into xmon and modify kernel data, such as the lockdown state. - Support for KASLR on 32-bit BookE machines (Freescale / NXP). - Fixes for our flush_icache_range() and __kernel_sync_dicache() (VDSO) to work with memory ranges >4GB. - Some reworks of the pseries CMM (Cooperative Memory Management) driver to make it behave more like other balloon drivers and enable some cleanups of generic mm code. - A series of fixes to our hardware breakpoint support to properly handle unaligned watchpoint addresses. Plus a bunch of other smaller improvements, fixes and cleanups. Thanks to: Alastair D'Silva, Andrew Donnellan, Aneesh Kumar K.V, Anthony Steinhauser, Cédric Le Goater, Chris Packham, Chris Smart, Christophe Leroy, Christopher M. Riedl, Christoph Hellwig, Claudio Carvalho, Daniel Axtens, David Hildenbrand, Deb McLemore, Diana Craciun, Eric Richter, Geert Uytterhoeven, Greg Kroah-Hartman, Greg Kurz, Gustavo L. F. Walbon, Hari Bathini, Harish, Jason Yan, Krzysztof Kozlowski, Leonardo Bras, Mathieu Malaterre, Mauro S. M. Rodrigues, Michal Suchanek, Mimi Zohar, Nathan Chancellor, Nathan Lynch, Nayna Jain, Nick Desaulniers, Oliver O'Halloran, Qian Cai, Rasmus Villemoes, Ravi Bangoria, Sam Bobroff, Santosh Sivaraj, Scott Wood, Thomas Huth, Tyrel Datwyler, Vaibhav Jain, Valentin Longchamp, YueHaibing" * tag 'powerpc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (144 commits) powerpc/fixmap: fix crash with HIGHMEM x86/efi: remove unused variables powerpc: Define arch_is_kernel_initmem_freed() for lockdep powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp powerpc: Avoid clang warnings around setjmp and longjmp powerpc: Don't add -mabi= flags when building with Clang powerpc: Fix Kconfig indentation powerpc/fixmap: don't clear fixmap area in paging_init() selftests/powerpc: spectre_v2 test must be built 64-bit powerpc/powernv: Disable native PCIe port management powerpc/kexec: Move kexec files into a dedicated subdir. powerpc/32: Split kexec low level code out of misc_32.S powerpc/sysdev: drop simple gpio powerpc/83xx: map IMMR with a BAT. powerpc/32s: automatically allocate BAT in setbat() powerpc/ioremap: warn on early use of ioremap() powerpc: Add support for GENERIC_EARLY_IOREMAP powerpc/fixmap: Use __fix_to_virt() instead of fix_to_virt() powerpc/8xx: use the fixmapped IMMR in cpm_reset() powerpc/8xx: add __init to cpm1 init functions ...
2019-11-30selftests: forwarding: fix race between packet receive and tc checkJiri Pirko1-8/+31
It is possible that tc stats get checked before the packet we check for actually arrived into the interface and accounted for. Fix it by checking for the expected result in a loop until timeout is reached (by default 1 second). Fixes: 07e5c75184a1 ("selftests: forwarding: Introduce tc flower matching tests") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-29selftests: pmtu: use -oneline for ip route list cacheThadeu Lima de Souza Cascardo1-3/+2
Some versions of iproute2 will output more than one line per entry, which will cause the test to fail, like: TEST: ipv6: list and flush cached exceptions [FAIL] can't list cached exceptions That happens, for example, with iproute2 4.15.0. When using the -oneline option, this will work just fine: TEST: ipv6: list and flush cached exceptions [ OK ] This also works just fine with a more recent version of iproute2, like 5.4.0. For some reason, two lines are printed for the IPv4 test no matter what version of iproute2 is used. Use the same -oneline parameter there instead of counting the lines twice. Fixes: b964641e9925 ("selftests: pmtu: Make list_flush_ipv6_exception test more demanding") Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Acked-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-28selftests: bpf: correct perror stringsJakub Kicinski2-20/+20
perror(str) is basically equivalent to print("%s: %s\n", str, strerror(errno)). New line or colon at the end of str is a mistake/breaks formatting. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-28selftests: bpf: test_sockmap: handle file creation failures gracefullyJakub Kicinski1-0/+9
test_sockmap creates a temporary file to use for sendpage. this may fail for various reasons. Handle the error rather than segfault. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-28selftests/tls: add a test for fragmented messagesJakub Kicinski1-0/+60
Add a sendmsg test with very fragmented messages. This should fill up sk_msg and test the boundary conditions. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-29Merge tag 'perf-core-for-mingo-5.5-20191128' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgentIngo Molnar65-606/+2198
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf script: Adrian Hunter: - Fix brstackinsn for AUXTRACE. - Fix invalid LBR/binary mismatch error. perf diff: Arnaldo Carvalho de Melo: - Use llabs() with 64-bit values, fixing the build in some 32-bit architectures. perf pmu: Andi Kleen: - Use file system cache to optimize sysfs access. x86: Adrian Hunter: - Add some more Intel instructions to the opcode map and to the perf test entry: gf2p8affineinvqb, gf2p8affineqb, gf2p8mulb, v4fmaddps, v4fmaddss, v4fnmaddps, v4fnmaddss, vaesdec, vaesdeclast, vaesenc, vaesenclast, vcvtne2ps2bf16, vcvtneps2bf16, vdpbf16ps, vgf2p8affineinvqb, vgf2p8affineqb, vgf2p8mulb, vp2intersectd, vp2intersectq, vp4dpwssd, vp4dpwssds, vpclmulqdq, vpcompressb, vpcompressw, vpdpbusd, vpdpbusds, vpdpwssd, vpdpwssds, vpexpandb, vpexpandw, vpopcntb, vpopcntd, vpopcntq, vpopcntw, vpshldd, vpshldq, vpshldvd, vpshldvq, vpshldvw, vpshldw, vpshrdd, vpshrdq, vpshrdvd, vpshrdvq, vpshrdvw, vpshrdw, vpshufbitqmb. perf affinity: Andi Kleen: - Add infrastructure to save/restore affinity perf maps: Arnaldo Carvalho de Melo: - Merge 'struct maps' with 'struct map_groups', as there is a 1x1 relationship, simplifying code overal. perf build: Jiri Olsa: - Allow to link with libbpf dynamicaly. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-28Revert "selftests: Fix O= and KBUILD_OUTPUT handling for relative paths"Shuah Khan1-3/+2
This reverts commit 303e6218ecec475d5bc3e5922dec770ee5baf107. This patch breaks several CI use-cases that run kselftest builds without using main Makefile. This fix depends on abs_objtree which is undefined when kselftest build is invoked on selftests Makefile without going through the main Makefile. Revert this for now as this patch impacts selftest runs. Fixes: 303e6218ecec ("selftests: Fix O= and KBUILD_OUTPUT handling for relative paths") Reported-by: Cristian Marussi <cristian.marussi@arm.com> Reported-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-28Merge branch 'remotes/lorenzo/pci/misc'Bjorn Helgaas1-0/+1
- Fix iproc-msi and mvebu __iomem annotations (Ben Dooks) - Make mvebu_pci_bridge_emul_ops static (Ben Dooks) - Add Marek Vasut and Yoshihiro Shimoda as R-Car maintainers (Simon Horman) - Fix pcitest.c fd leak (Hewenliang) * remotes/lorenzo/pci/misc: tools: PCI: Fix fd leakage MAINTAINERS: Add Marek and Shimoda-san as R-Car PCIE co-maintainers PCI: mvebu: mvebu_pcie_map_registers __iomem fix PCI: mvebu: Make mvebu_pci_bridge_emul_ops static PCI: iproc-msi: Fix __iomem annotation in decode_msi_hwirq()
2019-11-28perf script: Fix invalid LBR/binary mismatch errorAdrian Hunter1-1/+1
The 'len' returned by grab_bb() includes an extra MAXINSN bytes to allow for the last instruction, so the the final 'offs' will not be 'len'. Fix the error condition logic accordingly. Before: $ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head grep 13759 [002] 8091.310257: 1862 instructions:uH: 5641d58069eb bmexec+0x86b (/bin/grep) bmexec+2485: 00005641d5806b35 jnz 0x5641d5806bd0 # MISPRED 00005641d5806bd0 movzxb (%r13,%rdx,1), %eax 00005641d5806bd6 add %rdi, %rax 00005641d5806bd9 movzxb -0x1(%rax), %edx 00005641d5806bdd cmp %rax, %r14 00005641d5806be0 jnb 0x5641d58069c0 # MISPRED mismatch of LBR data and executable 00005641d58069c0 movzxb (%r13,%rdx,1), %edi After: $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head grep 13759 [002] 8091.310257: 1862 instructions:uH: 5641d58069eb bmexec+0x86b (/bin/grep) bmexec+2485: 00005641d5806b35 jnz 0x5641d5806bd0 # MISPRED 00005641d5806bd0 movzxb (%r13,%rdx,1), %eax 00005641d5806bd6 add %rdi, %rax 00005641d5806bd9 movzxb -0x1(%rax), %edx 00005641d5806bdd cmp %rax, %r14 00005641d5806be0 jnb 0x5641d58069c0 # MISPRED 00005641d58069c0 movzxb (%r13,%rdx,1), %edi 00005641d58069c6 add %rax, %rdi Fixes: e98df280bc2a ("perf script brstackinsn: Fix recovery from LBR/binary mismatch") Reported-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191127095631.15663-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf script: Fix brstackinsn for AUXTRACEAdrian Hunter1-1/+1
brstackinsn must be allowed to be set by the user when AUX area data has been captured because, in that case, the branch stack might be synthesized on the fly. This fixes the following error: Before: $ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head Display of branch stack assembler requested, but non all-branch filter set Hint: run 'perf record -b ...' After: $ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head grep 13759 [002] 8091.310257: 1862 instructions:uH: 5641d58069eb bmexec+0x86b (/bin/grep) bmexec+2485: 00005641d5806b35 jnz 0x5641d5806bd0 # MISPRED 00005641d5806bd0 movzxb (%r13,%rdx,1), %eax 00005641d5806bd6 add %rdi, %rax 00005641d5806bd9 movzxb -0x1(%rax), %edx 00005641d5806bdd cmp %rax, %r14 00005641d5806be0 jnb 0x5641d58069c0 # MISPRED mismatch of LBR data and executable 00005641d58069c0 movzxb (%r13,%rdx,1), %edi Fixes: 48d02a1d5c13 ("perf script: Add 'brstackinsn' for branch stacks") Reported-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191127095322.15417-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf affinity: Add infrastructure to save/restore affinityAndi Kleen4-0/+92
The kernel perf subsystem has to IPI to the target CPU for many operations. On systems with many CPUs and when managing many events the overhead can be dominated by lots of IPIs. An alternative is to set up CPU affinity in the perf tool, then set up all the events for that CPU, and then move on to the next CPU. Add some affinity management infrastructure to enable such a model. Used in followon patches. Committer notes: Use zfree() in some places, add missing stdbool.h header, some minor coding style changes. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191121001522.180827-3-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf pmu: Use file system cache to optimize sysfs accessAndi Kleen5-31/+83
pmu.c does a lot of redundant /sys accesses while parsing aliases and probing for PMUs. On large systems with a lot of PMUs this can get expensive (>2s): % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 27.25 1.227847 8 160888 16976 openat 26.42 1.190481 7 164224 164077 stat Add a cache to remember if specific file names exist or don't exist, which eliminates most of this overhead. Also optimize some stat() calls to be slightly cheaper access() Resulting in: 0.18 0.004166 2 1851 305 open 0.08 0.001970 2 829 622 access Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191121001522.180827-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf regs: Make perf_reg_name() return "unknown" instead of NULLArnaldo Carvalho de Melo1-1/+1
To avoid breaking the build on arches where this is not wired up, at least all the other features should be made available and when using this specific routine, the "unknown" should point the user/developer to the need to wire this up on this particular hardware architecture. Detected in a container mipsel debian cross build environment, where it shows up as: In file included from /usr/mipsel-linux-gnu/include/stdio.h:867, from /git/linux/tools/perf/lib/include/perf/cpumap.h:6, from util/session.c:13: In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2: /usr/mipsel-linux-gnu/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cross compiler details: mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909 Also on mips64: In file included from /usr/mips64-linux-gnuabi64/include/stdio.h:867, from /git/linux/tools/perf/lib/include/perf/cpumap.h:6, from util/session.c:13: In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2, inlined from 'regs_user__printf' at util/session.c:1139:3, inlined from 'dump_sample' at util/session.c:1246:3, inlined from 'machines__deliver_event' at util/session.c:1421:3: /usr/mips64-linux-gnuabi64/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'printf', inlined from 'regs_dump__printf' at util/session.c:1103:3, inlined from 'regs__printf' at util/session.c:1131:2, inlined from 'regs_intr__printf' at util/session.c:1147:3, inlined from 'dump_sample' at util/session.c:1249:3, inlined from 'machines__deliver_event' at util/session.c:1421:3: /usr/mips64-linux-gnuabi64/include/bits/stdio2.h:107:10: error: '%-5s' directive argument is null [-Werror=format-overflow=] 107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cross compiler details: mips64-linux-gnuabi64-gcc (Debian 9.2.1-8) 9.2.1 20190909 Fixes: 2bcd355b71da ("perf tools: Add interface to arch registers sets") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-95wjyv4o65nuaeweq31t7l1s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf diff: Use llabs() with 64-bit valuesArnaldo Carvalho de Melo1-1/+1
To fix this build error on a debian mipsel cross build environment: builtin-diff.c: In function 'compute_cycles_diff': builtin-diff.c:649:10: error: absolute value function 'labs' given an argument of type 's64' {aka 'long long int'} but has parameter of type 'long int' which may cause truncation of value [-Werror=absolute-value] 649 | val = labs(pair->block_info->cycles_spark[i] - | ^~~~ Fixes: cebf7d51a6c3 ("perf diff: Report noisy for cycles diff") Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-pn7szy5uw384ntjgk6zckh6a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28perf diff: Use llabs() with 64-bit valuesArnaldo Carvalho de Melo1-2/+2
To fix these build errors on a debian mipsel cross build environment: builtin-diff.c: In function 'block_cycles_diff_cmp': builtin-diff.c:550:6: error: absolute value function 'labs' given an argument of type 's64' {aka 'long long int'} but has parameter of type 'long int' which may cause truncation of value [-Werror=absolute-value] 550 | l = labs(left->diff.cycles); | ^~~~ builtin-diff.c:551:6: error: absolute value function 'labs' given an argument of type 's64' {aka 'long long int'} but has parameter of type 'long int' which may cause truncation of value [-Werror=absolute-value] 551 | r = labs(right->diff.cycles); | ^~~~ Fixes: 99150a1faab2 ("perf diff: Use hists to manage basic blocks per symbol") Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-pn7szy5uw384ntjgk6zckh6a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-27libbpf: Fix sym->st_value print on 32-bit archesAlexei Starovoitov1-1/+1
The st_value field is a 64-bit value and causing this error on 32-bit arches: In file included from libbpf.c:52: libbpf.c: In function 'bpf_program__record_reloc': libbpf_internal.h:59:22: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'Elf64_Addr' {aka 'const long long unsigned int'} [-Werror=format=] Fix it with (__u64) cast. Fixes: 1f8e2bcb2cd5 ("libbpf: Refactor relocation handling") Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-11-27libbpf: Fix up generation of bpf_helper_defs.hArnaldo Carvalho de Melo2-2/+3
$ make -C tools/perf build-test does, ends up with these two problems: make[3]: *** No rule to make target '/tmp/tmp.zq13cHILGB/perf-5.3.0/include/uapi/linux/bpf.h', needed by 'bpf_helper_defs.h'. Stop. make[3]: *** Waiting for unfinished jobs.... make[2]: *** [Makefile.perf:757: /tmp/tmp.zq13cHILGB/perf-5.3.0/tools/lib/bpf/libbpf.a] Error 2 make[2]: *** Waiting for unfinished jobs.... Because $(srcdir) points to the /tmp/tmp.zq13cHILGB/perf-5.3.0 directory and we need '/tools/ after that variable, and after fixing this then we get to another problem: /bin/sh: /home/acme/git/perf/tools/scripts/bpf_helpers_doc.py: No such file or directory make[3]: *** [Makefile:184: bpf_helper_defs.h] Error 127 make[3]: *** Deleting file 'bpf_helper_defs.h' LD /tmp/build/perf/libapi-in.o make[2]: *** [Makefile.perf:778: /tmp/build/perf/libbpf.a] Error 2 make[2]: *** Waiting for unfinished jobs.... Because this requires something outside the tools/ directories that gets collected into perf's detached tarballs, to fix it just add it to tools/perf/MANIFEST, which this patch does, now it works for that case and also for all these other cases. Fixes: e01a75c15969 ("libbpf: Move bpf_{helpers, helper_defs, endian, tracing}.h into libbpf") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andriin@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-4pnkg2vmdvq5u6eivc887wen@git.kernel.org Link: https://lore.kernel.org/bpf/20191126151045.GB19483@kernel.org
2019-11-27libbpf: Fix global variable relocationAndrii Nakryiko5-41/+36
Similarly to a0d7da26ce86 ("libbpf: Fix call relocation offset calculation bug"), relocations against global variables need to take into account referenced symbol's st_value, which holds offset into a corresponding data section (and, subsequently, offset into internal backing map). For static variables this offset is always zero and data offset is completely described by respective instruction's imm field. Convert a bunch of selftests to global variables. Previously they were relying on `static volatile` trick to ensure Clang doesn't inline static variables, which with global variables is not necessary anymore. Fixes: 393cdfbee809 ("libbpf: Support initialized global variables") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20191127200651.1381348-1-andriin@fb.com
2019-11-27libbpf: Fix Makefile' libbpf symbol mismatch diagnosticAndrii Nakryiko1-1/+1
Fix Makefile's diagnostic diff output when there is LIBBPF_API-versioned symbols mismatch. Fixes: 1bd63524593b ("libbpf: handle symbol versioning properly for libbpf.a") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20191127200134.1360660-1-andriin@fb.com
2019-11-27Merge tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds9-13/+249
Pull tracing updates from Steven Rostedt: "New tracing features: - New PERMANENT flag to ftrace_ops when attaching a callback to a function. As /proc/sys/kernel/ftrace_enabled when set to zero will disable all attached callbacks in ftrace, this has a detrimental impact on live kernel tracing, as it disables all that it patched. If a ftrace_ops is registered to ftrace with the PERMANENT flag set, it will prevent ftrace_enabled from being disabled, and if ftrace_enabled is already disabled, it will prevent a ftrace_ops with PREMANENT flag set from being registered. - New register_ftrace_direct(). As eBPF would like to register its own trampolines to be called by the ftrace nop locations directly, without going through the ftrace trampoline, this function has been added. This allows for eBPF trampolines to live along side of ftrace, perf, kprobe and live patching. It also utilizes the ftrace enabled_functions file that keeps track of functions that have been modified in the kernel, to allow for security auditing. - Allow for kernel internal use of ftrace instances. Subsystems in the kernel can now create and destroy their own tracing instances which allows them to have their own tracing buffer, and be able to record events without worrying about other users from writing over their data. - New seq_buf_hex_dump() that lets users use the hex_dump() in their seq_buf usage. - Notifications now added to tracing_max_latency to allow user space to know when a new max latency is hit by one of the latency tracers. - Wider spread use of generic compare operations for use of bsearch and friends. - More synthetic event fields may be defined (32 up from 16) - Use of xarray for architectures with sparse system calls, for the system call trace events. This along with small clean ups and fixes" * tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (51 commits) tracing: Enable syscall optimization for MIPS tracing: Use xarray for syscall trace events tracing: Sample module to demonstrate kernel access to Ftrace instances. tracing: Adding new functions for kernel access to Ftrace instances tracing: Fix Kconfig indentation ring-buffer: Fix typos in function ring_buffer_producer ftrace: Use BIT() macro ftrace: Return ENOTSUPP when DYNAMIC_FTRACE_WITH_DIRECT_CALLS is not configured ftrace: Rename ftrace_graph_stub to ftrace_stub_graph ftrace: Add a helper function to modify_ftrace_direct() to allow arch optimization ftrace: Add helper find_direct_entry() to consolidate code ftrace: Add another check for match in register_ftrace_direct() ftrace: Fix accounting bug with direct->count in register_ftrace_direct() ftrace/selftests: Fix spelling mistake "wakeing" -> "waking" tracing: Increase SYNTH_FIELDS_MAX for synthetic_events ftrace/samples: Add a sample module that implements modify_ftrace_direct() ftrace: Add modify_ftrace_direct() tracing: Add missing "inline" in stub function of latency_fsnotify() tracing: Remove stray tab in TRACE_EVAL_MAP_FILE's help text tracing: Use seq_buf_hex_dump() to dump buffers ...
2019-11-27Merge tag 'riscv/for-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds1-1/+7
Pull RISC-V updates from Paul Walmsley: "New features: - SECCOMP support - nommu support - SBI-less system support - M-Mode support - TLB flush optimizations Other improvements: - Pass the complete RISC-V ISA string supported by the CPU cores to userspace, rather than redacting parts of it in the kernel - Add platform DMA IP block data to the HiFive Unleashed board DT file - Add Makefile support for BZ2, LZ4, LZMA, LZO kernel image compression formats, in line with other architectures Cleanups: - Remove unnecessary PTE_PARENT_SIZE macro - Standardize include guard naming across arch/riscv" * tag 'riscv/for-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (22 commits) riscv: provide a flat image loader riscv: add nommu support riscv: clear the instruction cache and all registers when booting riscv: read the hart ID from mhartid on boot riscv: provide native clint access for M-mode riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00 riscv: add support for MMIO access to the timer registers riscv: implement remote sfence.i using IPIs riscv: cleanup the default power off implementation riscv: poison SBI calls for M-mode riscv: don't allow selecting SBI based drivers for M-mode RISC-V: Add multiple compression image format. riscv: clean up the macro format in each header file riscv: Use PMD_SIZE to replace PTE_PARENT_SIZE riscv: abstract out CSR names for supervisor vs machine mode riscv: separate MMIO functions into their own header file riscv: enter WFI in default_power_off() if SBI does not shutdown RISC-V: Issue a tlb page flush if possible RISC-V: Issue a local tlbflush if possible. RISC-V: Do not invoke SBI call if cpumask is empty ...
2019-11-27Merge tag 'staging-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds2-3/+8
Pull staging / iio updates from Greg KH: "Here is the big staging and iio set of patches for the 5.5-rc1 release. It's the usual huge collection of cleanup patches all over the drivers/staging/ area, along with a new staging driver, and a bunch of new IIO drivers as well. Full details are in the shortlog, but all of these have been in linux-next for a long time with no reported issues" * tag 'staging-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (548 commits) staging: vchiq: Have vchiq_dump_* functions return an error code staging: vchiq: Refactor indentation in vchiq_dump_* functions staging: fwserial: Fix Kconfig indentation (seven spaces) staging: vchiq_dump: Replace min with min_t staging: vchiq: Fix block comment format in vchiq_dump() staging: octeon: indent with tabs instead of spaces staging: comedi: usbduxfast: usbduxfast_ai_cmdtest rounding error staging: most: core: remove sysfs attr remove_link staging: vc04: Fix Kconfig indentation staging: pi433: Fix Kconfig indentation staging: nvec: Fix Kconfig indentation staging: most: Fix Kconfig indentation staging: fwserial: Fix Kconfig indentation staging: fbtft: Fix Kconfig indentation fbtft: Drop OF dependency fbtft: Make use of device property API fbtft: Drop useless #ifdef CONFIG_OF and dead code fbtft: Describe function parameters in kernel-doc fbtft: Make sure string is NULL terminated staging: rtl8723bs: remove set but not used variable 'change', 'pos' ...
2019-11-27Merge tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds1-1/+1
Pull USB updates from Greg KH: "Here is the big set of USB patches for 5.5-rc1 Lots of little things in here: - typec updates and additions - usb-serial drivers cleanups and fixes - misc USB drivers cleanups and fixes - gadget drivers new features and controllers added - usual xhci additions - other minor changes All of these have been in linux-next with no reported issues" * tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (223 commits) usb: gadget: udc: gr_udc: create debugfs directory under usb root usb: gadget: atmel: create debugfs directory under usb root usb: musb: create debugfs directory under usb root usb: serial: Fix Kconfig indentation usb: misc: Fix Kconfig indentation usb: gadget: Fix Kconfig indentation usb: host: Fix Kconfig indentation usb: dwc3: Fix Kconfig indentation usb: gadget: configfs: Fix missing spin_lock_init() usb-storage: Disable UAS on JMicron SATA enclosure USB: documentation: flags on usb-storage versus UAS USB: uas: heed CAPACITY_HEURISTICS USB: uas: honor flag to avoid CAPACITY16 usb: host: xhci-tegra: Correct phy enable sequence usb-serial: cp201x: support Mark-10 digital force gauge usb: chipidea: imx: pinctrl for HSIC is optional usb: chipidea: imx: refine the error handling for hsic usb: chipidea: imx: change hsic power regulator as optional usb: chipidea: imx: check data->usbmisc_data against NULL before access usb: chipidea: core: change vbus-regulator as optional ...
2019-11-26Merge tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds13-19/+100
Pull power management updates from Rafael Wysocki: "These include cpuidle changes to use nanoseconds (instead of microseconds) as the unit of time and to simplify checks for disabled idle states in the idle loop, some cpuidle fixes and governor updates, assorted cpufreq updates (driver updates mostly and a few core fixes and cleanups), devfreq updates (dominated by the tegra30 driver changes), new CPU IDs for the RAPL power capping driver, relatively minor updates of the generic power domains (genpd) and operation performance points (OPP) frameworks, and assorted fixes and cleanups. There are also two maintainer information updates: Chanwoo Choi will be maintaining the devfreq subsystem going forward and Todd Brandt is going to maintain the pm-graph utility (created by him). Specifics: - Use nanoseconds (instead of microseconds) as the unit of time in the cpuidle core and simplify checks for disabled idle states in the idle loop (Rafael Wysocki) - Fix and clean up the teo cpuidle governor (Rafael Wysocki) - Fix the cpuidle registration error code path (Zhenzhong Duan) - Avoid excessive vmexits in the ACPI cpuidle driver (Yin Fengwei) - Extend the idle injection infrastructure to be able to measure the requested duration in nanoseconds and to allow an exit latency limit for idle states to be specified (Daniel Lezcano) - Fix cpufreq driver registration and clarify a comment in the cpufreq core (Viresh Kumar) - Add NULL checks to the show() and store() methods of sysfs attributes exposed by cpufreq (Kai Shen) - Update cpufreq drivers: * Fix for a plain int as pointer warning from sparse in intel_pstate (Jamal Shareef) * Fix for a hardcoded number of CPUs and stack bloat in the powernv driver (John Hubbard) * Updates to the ti-cpufreq driver and DT files to support new platforms and migrate bindings from opp-v1 to opp-v2 (Adam Ford, H. Nikolaus Schaller) * Merging of the arm_big_little and vexpress-spc drivers and related cleanup (Sudeep Holla) * Fix for imx's default speed grade value (Anson Huang) * Minor cleanup of the s3c64xx driver (Nathan Chancellor) * CPU speed bin detection fix for sun50i (Ondrej Jirman) - Appoint Chanwoo Choi as the new devfreq maintainer. - Update the devfreq core: * Check NULL governor in available_governors_show sysfs to prevent showing wrong governor information and fix a race condition between devfreq_update_status() and trans_stat_show() (Leonard Crestez) * Add new 'interrupt-driven' flag for devfreq governors to allow interrupt-driven governors to prevent the devfreq core from polling devices for status (Dmitry Osipenko) * Improve an error message in devfreq_add_device() (Matthias Kaehlcke) - Update devfreq drivers: * tegra30 driver fixes and cleanups (Dmitry Osipenko) * Removal of unused property from dt-binding documentation for the exynos-bus driver (Kamil Konieczny) * exynos-ppmu cleanup and DT bindings update (Lukasz Luba, Marek Szyprowski) - Add new CPU IDs for CometLake Mobile and Desktop to the Intel RAPL power capping driver (Zhang Rui) - Allow device initialization in the generic power domains (genpd) framework to be more straightforward and clean it up (Ulf Hansson) - Add support for adjusting OPP voltages at run time to the OPP framework (Stephen Boyd) - Avoid freeing memory that has never been allocated in the hibernation core (Andy Whitcroft) - Clean up function headers in a header file and coding style in the wakeup IRQs handling code (Ulf Hansson, Xiaofei Tan) - Clean up the SmartReflex adaptive voltage scaling (AVS) driver for ARM (Ben Dooks, Geert Uytterhoeven) - Wrap power management documentation to fit in 80 columns (Bjorn Helgaas) - Add pm-graph utility entry to MAINTAINERS (Todd Brandt) - Update the cpupower utility: * Fix the handling of set and info subcommands (Abhishek Goel) * Fix build warnings (Nathan Chancellor) * Improve mperf_monitor handling (Janakarajan Natarajan)" * tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits) PM: Wrap documentation to fit in 80 columns cpuidle: Pass exit latency limit to cpuidle_use_deepest_state() cpuidle: Allow idle injection to apply exit latency limit cpuidle: Introduce cpuidle_driver_state_disabled() for driver quirks cpuidle: teo: Avoid code duplication in conditionals cpufreq: Register drivers only after CPU devices have been registered cpuidle: teo: Avoid using "early hits" incorrectly cpuidle: teo: Exclude cpuidle overhead from computations PM / Domains: Convert to dev_to_genpd_safe() in genpd_syscore_switch() mmc: tmio: Avoid boilerplate code in ->runtime_suspend() PM / Domains: Implement the ->start() callback for genpd PM / Domains: Introduce dev_pm_domain_start() ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition PM / wakeirq: remove unnecessary parentheses power: avs: smartreflex: Remove superfluous cast in debugfs_create_file() call cpuidle: Use nanoseconds as the unit of time PM / OPP: Support adjusting OPP voltages at runtime PM / core: Clean up some function headers in power.h cpufreq: Add NULL checks to show() and store() methods of cpufreq cpufreq: intel_pstate: Fix plain int as pointer warning from sparse ...
2019-11-26Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds4-12/+11
Pull locking updates from Ingo Molnar: "The main changes in this cycle were: - A comprehensive rewrite of the robust/PI futex code's exit handling to fix various exit races. (Thomas Gleixner et al) - Rework the generic REFCOUNT_FULL implementation using atomic_fetch_* operations so that the performance impact of the cmpxchg() loops is mitigated for common refcount operations. With these performance improvements the generic implementation of refcount_t should be good enough for everybody - and this got confirmed by performance testing, so remove ARCH_HAS_REFCOUNT and REFCOUNT_FULL entirely, leaving the generic implementation enabled unconditionally. (Will Deacon) - Other misc changes, fixes, cleanups" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) lkdtm: Remove references to CONFIG_REFCOUNT_FULL locking/refcount: Remove unused 'refcount_error_report()' function locking/refcount: Consolidate implementations of refcount_t locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions locking/refcount: Move saturation warnings out of line locking/refcount: Improve performance of generic REFCOUNT_FULL code locking/refcount: Move the bulk of the REFCOUNT_FULL implementation into the <linux/refcount.h> header locking/refcount: Remove unused refcount_*_checked() variants locking/refcount: Ensure integer operands are treated as signed locking/refcount: Define constants for saturation and max refcount values futex: Prevent exit livelock futex: Provide distinct return value when owner is exiting futex: Add mutex around futex exit futex: Provide state handling for exec() as well futex: Sanitize exit state handling futex: Mark the begin of futex exit explicitly futex: Set task::futex_state to DEAD right after handling futex exit futex: Split futex_mm_release() for exit/exec exit/exec: Seperate mm_release() futex: Replace PF_EXITPIDONE with a state ...
2019-11-26Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds10-50/+576
Pull RCU updates from Ingo Molnar: "The main changes in this cycle were: - Dynamic tick (nohz) updates, perhaps most notably changes to force the tick on when needed due to lengthy in-kernel execution on CPUs on which RCU is waiting. - Linux-kernel memory consistency model updates. - Replace rcu_swap_protected() with rcu_prepace_pointer(). - Torture-test updates. - Documentation updates. - Miscellaneous fixes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) security/safesetid: Replace rcu_swap_protected() with rcu_replace_pointer() net/sched: Replace rcu_swap_protected() with rcu_replace_pointer() net/netfilter: Replace rcu_swap_protected() with rcu_replace_pointer() net/core: Replace rcu_swap_protected() with rcu_replace_pointer() bpf/cgroup: Replace rcu_swap_protected() with rcu_replace_pointer() fs/afs: Replace rcu_swap_protected() with rcu_replace_pointer() drivers/scsi: Replace rcu_swap_protected() with rcu_replace_pointer() drm/i915: Replace rcu_swap_protected() with rcu_replace_pointer() x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace_pointer() rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer() rcu: Suppress levelspread uninitialized messages rcu: Fix uninitialized variable in nocb_gp_wait() rcu: Update descriptions for rcu_future_grace_period tracepoint rcu: Update descriptions for rcu_nocb_wake tracepoint rcu: Remove obsolete descriptions for rcu_barrier tracepoint rcu: Ensure that ->rcu_urgent_qs is set before resched IPI workqueue: Convert for_each_wq to use built-in list check rcu: Several rcu_segcblist functions can be static rcu: Remove unused function hlist_bl_del_init_rcu() Documentation: Rename rcu_node_context_switch() to rcu_note_context_switch() ...
2019-11-26Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds266-23066/+31898
Pull perf updates from Ingo Molnar: "The main kernel side changes in this cycle were: - Various Intel-PT updates and optimizations (Alexander Shishkin) - Prohibit kprobes on Xen/KVM emulate prefixes (Masami Hiramatsu) - Add support for LSM and SELinux checks to control access to the perf syscall (Joel Fernandes) - Misc other changes, optimizations, fixes and cleanups - see the shortlog for details. There were numerous tooling changes as well - 254 non-merge commits. Here are the main changes - too many to list in detail: - Enhancements to core tooling infrastructure, perf.data, libperf, libtraceevent, event parsing, vendor events, Intel PT, callchains, BPF support and instruction decoding. - There were updates to the following tools: perf annotate perf diff perf inject perf kvm perf list perf maps perf parse perf probe perf record perf report perf script perf stat perf test perf trace - And a lot of other changes: please see the shortlog and Git log for more details" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (279 commits) perf parse: Fix potential memory leak when handling tracepoint errors perf probe: Fix spelling mistake "addrees" -> "address" libtraceevent: Fix memory leakage in copy_filter_type libtraceevent: Fix header installation perf intel-bts: Does not support AUX area sampling perf intel-pt: Add support for decoding AUX area samples perf intel-pt: Add support for recording AUX area samples perf pmu: When using default config, record which bits of config were changed by the user perf auxtrace: Add support for queuing AUX area samples perf session: Add facility to peek at all events perf auxtrace: Add support for dumping AUX area samples perf inject: Cut AUX area samples perf record: Add aux-sample-size config term perf record: Add support for AUX area sampling perf auxtrace: Add support for AUX area sample recording perf auxtrace: Move perf_evsel__find_pmu() perf record: Add a function to test for kernel support for AUX area sampling perf tools: Add kernel AUX area sampling definitions perf/core: Make the mlock accounting simple again perf report: Jump to symbol source view from total cycles view ...
2019-11-26selftests/x86/single_step_syscall: Check SYSENTER directlyAndy Lutomirski1-9/+85
We used to test SYSENTER only through the vDSO. Test it directly too, just in case. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-26Merge branch 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds2-12/+133
Pull x86 iopl updates from Ingo Molnar: "This implements a nice simplification of the iopl and ioperm code that Thomas Gleixner discovered: we can implement the IO privilege features of the iopl system call by using the IO permission bitmap in permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space if they change the interrupt flag. This implements that feature, with testing facilities and related cleanups" [ "Simplification" may be an over-statement. The main goal is to avoid the cli/sti of iopl by effectively implementing the IO port access parts of iopl in terms of ioperm. This may end up not workign well in case people actually depend on cli/sti being available, or if there are mixed uses of iopl and ioperm. We will see.. - Linus ] * 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) x86/ioperm: Fix use of deprecated config option x86/entry/32: Clarify register saving in __switch_to_asm() selftests/x86/iopl: Extend test to cover IOPL emulation x86/ioperm: Extend IOPL config to control ioperm() as well x86/iopl: Remove legacy IOPL option x86/iopl: Restrict iopl() permission scope x86/iopl: Fixup misleading comment selftests/x86/ioperm: Extend testing so the shared bitmap is exercised x86/ioperm: Share I/O bitmap if identical x86/ioperm: Remove bitmap if all permissions dropped x86/ioperm: Move TSS bitmap update to exit to user work x86/ioperm: Add bitmap sequence number x86/ioperm: Move iobitmap data into a struct x86/tss: Move I/O bitmap data into a seperate struct x86/io: Speedup schedule out of I/O bitmap user x86/ioperm: Avoid bitmap allocation if no permissions are set x86/ioperm: Simplify first ioperm() invocation logic x86/iopl: Cleanup include maze x86/tss: Fix and move VMX BUILD_BUG_ON() x86/cpu: Unify cpu_init() ...