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-rw-r--r--.mailmap7
-rw-r--r--Documentation/ABI/obsolete/sysfs-selinux-disable26
-rw-r--r--Documentation/ABI/stable/sysfs-class-tpm33
-rw-r--r--Documentation/ABI/stable/sysfs-driver-dma-idxd171
-rw-r--r--Documentation/ABI/stable/sysfs-driver-mlxreg-io79
-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq18
-rw-r--r--Documentation/ABI/testing/sysfs-devices-system-cpu6
-rw-r--r--Documentation/ABI/testing/sysfs-platform-asus-wmi10
-rw-r--r--Documentation/ABI/testing/sysfs-power13
-rw-r--r--Documentation/RCU/NMI-RCU.rst (renamed from Documentation/RCU/NMI-RCU.txt)53
-rw-r--r--Documentation/RCU/arrayRCU.rst (renamed from Documentation/RCU/arrayRCU.txt)34
-rw-r--r--Documentation/RCU/index.rst5
-rw-r--r--Documentation/RCU/lockdep-splat.txt2
-rw-r--r--Documentation/RCU/rcu_dereference.rst (renamed from Documentation/RCU/rcu_dereference.txt)75
-rw-r--r--Documentation/RCU/rcubarrier.rst (renamed from Documentation/RCU/rcubarrier.txt)222
-rw-r--r--Documentation/RCU/stallwarn.txt11
-rw-r--r--Documentation/RCU/whatisRCU.rst (renamed from Documentation/RCU/whatisRCU.txt)291
-rw-r--r--Documentation/admin-guide/acpi/fan_performance_states.rst62
-rw-r--r--Documentation/admin-guide/acpi/index.rst1
-rw-r--r--Documentation/admin-guide/cgroup-v2.rst29
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt58
-rw-r--r--Documentation/admin-guide/pm/cpuidle.rst3
-rw-r--r--Documentation/admin-guide/pm/intel_idle.rst246
-rw-r--r--Documentation/admin-guide/pm/working-state.rst1
-rw-r--r--Documentation/arm64/cpu-feature-registers.rst16
-rw-r--r--Documentation/arm64/elf_hwcaps.rst31
-rw-r--r--Documentation/arm64/silicon-errata.rst2
-rw-r--r--Documentation/core-api/index.rst1
-rw-r--r--Documentation/core-api/padata.rst169
-rw-r--r--Documentation/crypto/devel-algos.rst38
-rw-r--r--Documentation/devicetree/bindings/arm/atmel-sysregs.txt6
-rw-r--r--Documentation/devicetree/bindings/ata/brcm,sata-brcm.txt7
-rw-r--r--Documentation/devicetree/bindings/dma/fsl-edma.txt1
-rw-r--r--Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt3
-rw-r--r--Documentation/devicetree/bindings/dma/jz4780-dma.txt6
-rw-r--r--Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt1
-rw-r--r--Documentation/devicetree/bindings/dma/ti/k3-udma.yaml184
-rw-r--r--Documentation/devicetree/bindings/gpio/sifive,gpio.yaml68
-rw-r--r--Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml66
-rw-r--r--Documentation/devicetree/bindings/hwmon/pmbus/ti,ucd90320.yaml45
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt1
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2xxx-scu-ic.txt23
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/fsl,intmux.yaml68
-rw-r--r--Documentation/devicetree/bindings/memory-controllers/fsl/imx8m-ddrc.yaml72
-rw-r--r--Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.txt41
-rw-r--r--Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt1
-rw-r--r--Documentation/devicetree/bindings/mmc/renesas,sdhi.txt3
-rw-r--r--Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt49
-rw-r--r--Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml125
-rw-r--r--Documentation/devicetree/bindings/mmc/sdhci-atmel.txt13
-rw-r--r--Documentation/devicetree/bindings/mmc/sdhci-msm.txt1
-rw-r--r--Documentation/devicetree/bindings/mmc/sdhci-omap.txt11
-rw-r--r--Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml68
-rw-r--r--Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt141
-rw-r--r--Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml70
-rw-r--r--Documentation/devicetree/bindings/power/avs/qcom,cpr.txt130
-rw-r--r--Documentation/devicetree/bindings/regulator/mp8859.txt22
-rw-r--r--Documentation/devicetree/bindings/regulator/mps,mpq7920.yaml121
-rw-r--r--Documentation/devicetree/bindings/regulator/rohm,bd71828-regulator.yaml107
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32-booster.txt18
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32-booster.yaml46
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.txt20
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml52
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32mp1-pwr-reg.txt43
-rw-r--r--Documentation/devicetree/bindings/regulator/st,stm32mp1-pwr-reg.yaml64
-rw-r--r--Documentation/devicetree/bindings/rng/brcm,iproc-rng200.txt1
-rw-r--r--Documentation/devicetree/bindings/soc/ti/k3-ringacc.txt59
-rw-r--r--Documentation/devicetree/bindings/spi/nuvoton,npcm-pspi.txt12
-rw-r--r--Documentation/devicetree/bindings/spi/spi-stm32.txt62
-rw-r--r--Documentation/devicetree/bindings/spi/spi_atmel.txt2
-rw-r--r--Documentation/devicetree/bindings/spi/st,stm32-spi.yaml105
-rw-r--r--Documentation/devicetree/bindings/timer/renesas,cmt.txt2
-rw-r--r--Documentation/driver-api/dmaengine/client.rst87
-rw-r--r--Documentation/driver-api/dmaengine/provider.rst48
-rw-r--r--Documentation/driver-api/driver-model/devres.rst1
-rw-r--r--Documentation/filesystems/fscrypt.rst75
-rw-r--r--Documentation/firmware-guide/acpi/enumeration.rst16
-rw-r--r--Documentation/hwmon/adm1177.rst36
-rw-r--r--Documentation/hwmon/drivetemp.rst52
-rw-r--r--Documentation/hwmon/index.rst5
-rw-r--r--Documentation/hwmon/max20730.rst74
-rw-r--r--Documentation/hwmon/max31730.rst44
-rw-r--r--Documentation/hwmon/pmbus.rst10
-rw-r--r--Documentation/hwmon/ucd9000.rst12
-rw-r--r--Documentation/hwmon/xdpe12284.rst101
-rw-r--r--Documentation/padata.txt163
-rw-r--r--Documentation/sound/kernel-api/writing-an-alsa-driver.rst2
-rw-r--r--Documentation/tee.txt81
-rw-r--r--Documentation/x86/boot.rst2
-rw-r--r--Documentation/x86/pat.rst2
-rw-r--r--MAINTAINERS78
-rw-r--r--Makefile2
-rw-r--r--arch/alpha/include/asm/io.h10
-rw-r--r--arch/alpha/include/asm/vmalloc.h4
-rw-r--r--arch/arc/Kconfig2
-rw-r--r--arch/arc/include/asm/vmalloc.h4
-rw-r--r--arch/arc/kernel/entry.S6
-rw-r--r--arch/arm/Kconfig2
-rw-r--r--arch/arm/crypto/aes-ce-glue.c14
-rw-r--r--arch/arm/crypto/chacha-glue.c4
-rw-r--r--arch/arm/crypto/crc32-ce-glue.c4
-rw-r--r--arch/arm/crypto/ghash-ce-glue.c11
-rw-r--r--arch/arm/crypto/poly1305-glue.c18
-rw-r--r--arch/arm/include/asm/arch_gicv3.h2
-rw-r--r--arch/arm/include/asm/efi.h17
-rw-r--r--arch/arm/include/asm/io.h8
-rw-r--r--arch/arm/include/asm/switch_to.h2
-rw-r--r--arch/arm/include/asm/vdso/gettimeofday.h36
-rw-r--r--arch/arm/include/asm/vdso/vsyscall.h4
-rw-r--r--arch/arm/include/asm/vmalloc.h4
-rw-r--r--arch/arm/kernel/Makefile4
-rw-r--r--arch/arm/kernel/entry-armv.S4
-rw-r--r--arch/arm/kernel/ftrace.c10
-rw-r--r--arch/arm/kernel/traps.c2
-rw-r--r--arch/arm/mach-bcm/platsmp.c4
-rw-r--r--arch/arm/mach-davinci/devices.c2
-rw-r--r--arch/arm/mach-exynos/Kconfig1
-rw-r--r--arch/arm/mach-pxa/magician.c2
-rw-r--r--arch/arm/mach-shmobile/platsmp-apmu.c2
-rw-r--r--arch/arm/mach-shmobile/pm-rcar-gen2.c2
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7740.c8
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7778.c2
-rw-r--r--arch/arm/mm/cache-v7.S4
-rw-r--r--arch/arm/mm/cache-v7m.S4
-rw-r--r--arch/arm/vdso/Makefile2
-rw-r--r--arch/arm64/Kconfig110
-rw-r--r--arch/arm64/Makefile17
-rw-r--r--arch/arm64/boot/Makefile2
-rw-r--r--arch/arm64/crypto/aes-ce-ccm-core.S16
-rw-r--r--arch/arm64/crypto/aes-ce-ccm-glue.c8
-rw-r--r--arch/arm64/crypto/aes-ce-core.S16
-rw-r--r--arch/arm64/crypto/aes-ce-glue.c8
-rw-r--r--arch/arm64/crypto/aes-ce.S4
-rw-r--r--arch/arm64/crypto/aes-cipher-core.S8
-rw-r--r--arch/arm64/crypto/aes-glue.c31
-rw-r--r--arch/arm64/crypto/aes-modes.S16
-rw-r--r--arch/arm64/crypto/aes-neon.S4
-rw-r--r--arch/arm64/crypto/aes-neonbs-core.S40
-rw-r--r--arch/arm64/crypto/chacha-neon-core.S16
-rw-r--r--arch/arm64/crypto/crct10dif-ce-core.S12
-rw-r--r--arch/arm64/crypto/ghash-ce-core.S8
-rw-r--r--arch/arm64/crypto/ghash-ce-glue.c10
-rw-r--r--arch/arm64/crypto/nh-neon-core.S4
-rw-r--r--arch/arm64/crypto/poly1305-glue.c18
-rw-r--r--arch/arm64/crypto/sha1-ce-core.S4
-rw-r--r--arch/arm64/crypto/sha1-ce-glue.c17
-rw-r--r--arch/arm64/crypto/sha2-ce-core.S4
-rw-r--r--arch/arm64/crypto/sha2-ce-glue.c34
-rw-r--r--arch/arm64/crypto/sha256-glue.c34
-rw-r--r--arch/arm64/crypto/sha3-ce-core.S4
-rw-r--r--arch/arm64/crypto/sha512-ce-core.S4
-rw-r--r--arch/arm64/crypto/sha512-ce-glue.c26
-rw-r--r--arch/arm64/crypto/sha512-glue.c15
-rw-r--r--arch/arm64/crypto/sm3-ce-core.S4
-rw-r--r--arch/arm64/crypto/sm4-ce-core.S4
-rw-r--r--arch/arm64/include/asm/alternative.h32
-rw-r--r--arch/arm64/include/asm/arch_gicv3.h1
-rw-r--r--arch/arm64/include/asm/archrandom.h75
-rw-r--r--arch/arm64/include/asm/assembler.h30
-rw-r--r--arch/arm64/include/asm/atomic_ll_sc.h2
-rw-r--r--arch/arm64/include/asm/atomic_lse.h19
-rw-r--r--arch/arm64/include/asm/checksum.h3
-rw-r--r--arch/arm64/include/asm/cpu.h1
-rw-r--r--arch/arm64/include/asm/cpucaps.h8
-rw-r--r--arch/arm64/include/asm/cpufeature.h5
-rw-r--r--arch/arm64/include/asm/cputype.h4
-rw-r--r--arch/arm64/include/asm/daifflags.h11
-rw-r--r--arch/arm64/include/asm/efi.h16
-rw-r--r--arch/arm64/include/asm/exception.h4
-rw-r--r--arch/arm64/include/asm/hwcap.h8
-rw-r--r--arch/arm64/include/asm/kexec.h4
-rw-r--r--arch/arm64/include/asm/kvm_host.h4
-rw-r--r--arch/arm64/include/asm/kvm_hyp.h6
-rw-r--r--arch/arm64/include/asm/linkage.h16
-rw-r--r--arch/arm64/include/asm/lse.h12
-rw-r--r--arch/arm64/include/asm/mmu.h48
-rw-r--r--arch/arm64/include/asm/pgtable-hwdef.h3
-rw-r--r--arch/arm64/include/asm/pgtable-prot.h4
-rw-r--r--arch/arm64/include/asm/preempt.h4
-rw-r--r--arch/arm64/include/asm/sections.h1
-rw-r--r--arch/arm64/include/asm/simd.h8
-rw-r--r--arch/arm64/include/asm/spinlock.h9
-rw-r--r--arch/arm64/include/asm/sysreg.h38
-rw-r--r--arch/arm64/include/asm/vdso/compat_gettimeofday.h2
-rw-r--r--arch/arm64/include/asm/vmalloc.h4
-rw-r--r--arch/arm64/include/uapi/asm/hwcap.h8
-rw-r--r--arch/arm64/kernel/acpi.c2
-rw-r--r--arch/arm64/kernel/armv8_deprecated.c3
-rw-r--r--arch/arm64/kernel/cpu-reset.S4
-rw-r--r--arch/arm64/kernel/cpu_errata.c27
-rw-r--r--arch/arm64/kernel/cpufeature.c191
-rw-r--r--arch/arm64/kernel/cpuinfo.c9
-rw-r--r--arch/arm64/kernel/entry-common.c8
-rw-r--r--arch/arm64/kernel/entry.S28
-rw-r--r--arch/arm64/kernel/fpsimd.c30
-rw-r--r--arch/arm64/kernel/hibernate.c151
-rw-r--r--arch/arm64/kernel/kaslr.c11
-rw-r--r--arch/arm64/kernel/kexec_image.c4
-rw-r--r--arch/arm64/kernel/machine_kexec.c12
-rw-r--r--arch/arm64/kernel/machine_kexec_file.c106
-rw-r--r--arch/arm64/kernel/process.c2
-rw-r--r--arch/arm64/kernel/ptrace.c21
-rw-r--r--arch/arm64/kernel/setup.c7
-rw-r--r--arch/arm64/kernel/signal.c6
-rw-r--r--arch/arm64/kernel/signal32.c4
-rw-r--r--arch/arm64/kernel/ssbd.c4
-rw-r--r--arch/arm64/kernel/syscall.c4
-rw-r--r--arch/arm64/kernel/traps.c3
-rw-r--r--arch/arm64/kvm/hyp/entry.S45
-rw-r--r--arch/arm64/kvm/hyp/switch.c20
-rw-r--r--arch/arm64/kvm/hyp/sysreg-sr.c4
-rw-r--r--arch/arm64/kvm/hyp/tlb.c12
-rw-r--r--arch/arm64/kvm/sys_regs.c2
-rw-r--r--arch/arm64/lib/Makefile6
-rw-r--r--arch/arm64/lib/clear_page.S4
-rw-r--r--arch/arm64/lib/clear_user.S4
-rw-r--r--arch/arm64/lib/copy_from_user.S4
-rw-r--r--arch/arm64/lib/copy_in_user.S4
-rw-r--r--arch/arm64/lib/copy_page.S42
-rw-r--r--arch/arm64/lib/copy_to_user.S4
-rw-r--r--arch/arm64/lib/crc32.S8
-rw-r--r--arch/arm64/lib/csum.c126
-rw-r--r--arch/arm64/lib/memchr.S4
-rw-r--r--arch/arm64/lib/memcmp.S4
-rw-r--r--arch/arm64/lib/memcpy.S8
-rw-r--r--arch/arm64/lib/memmove.S8
-rw-r--r--arch/arm64/lib/memset.S8
-rw-r--r--arch/arm64/lib/strchr.S4
-rw-r--r--arch/arm64/lib/strcmp.S4
-rw-r--r--arch/arm64/lib/strlen.S4
-rw-r--r--arch/arm64/lib/strncmp.S4
-rw-r--r--arch/arm64/lib/strnlen.S4
-rw-r--r--arch/arm64/lib/strrchr.S4
-rw-r--r--arch/arm64/lib/tishift.S12
-rw-r--r--arch/arm64/mm/cache.S52
-rw-r--r--arch/arm64/mm/context.c38
-rw-r--r--arch/arm64/mm/pageattr.c2
-rw-r--r--arch/arm64/mm/proc.S114
-rw-r--r--arch/arm64/xen/hypercall.S8
-rw-r--r--arch/c6x/include/asm/vmalloc.h4
-rw-r--r--arch/c6x/kernel/entry.S8
-rw-r--r--arch/csky/include/asm/vmalloc.h4
-rw-r--r--arch/csky/kernel/entry.S4
-rw-r--r--arch/h8300/include/asm/vmalloc.h4
-rw-r--r--arch/h8300/kernel/entry.S6
-rw-r--r--arch/hexagon/include/asm/io.h1
-rw-r--r--arch/hexagon/include/asm/vmalloc.h4
-rw-r--r--arch/hexagon/kernel/vm_entry.S6
-rw-r--r--arch/ia64/include/asm/acpi.h5
-rw-r--r--arch/ia64/include/asm/vga.h2
-rw-r--r--arch/ia64/include/asm/vmalloc.h4
-rw-r--r--arch/ia64/kernel/acpi.c2
-rw-r--r--arch/ia64/kernel/cyclone.c8
-rw-r--r--arch/ia64/kernel/entry.S12
-rw-r--r--arch/ia64/kernel/kprobes.c2
-rw-r--r--arch/m68k/Kconfig1
-rw-r--r--arch/m68k/configs/amiga_defconfig8
-rw-r--r--arch/m68k/configs/apollo_defconfig8
-rw-r--r--arch/m68k/configs/atari_defconfig8
-rw-r--r--arch/m68k/configs/bvme6000_defconfig8
-rw-r--r--arch/m68k/configs/hp300_defconfig8
-rw-r--r--arch/m68k/configs/mac_defconfig8
-rw-r--r--arch/m68k/configs/multi_defconfig8
-rw-r--r--arch/m68k/configs/mvme147_defconfig8
-rw-r--r--arch/m68k/configs/mvme16x_defconfig8
-rw-r--r--arch/m68k/configs/q40_defconfig8
-rw-r--r--arch/m68k/configs/sun3_defconfig6
-rw-r--r--arch/m68k/configs/sun3x_defconfig8
-rw-r--r--arch/m68k/include/asm/kmap.h1
-rw-r--r--arch/m68k/include/asm/unistd.h1
-rw-r--r--arch/m68k/include/asm/vmalloc.h4
-rw-r--r--arch/m68k/kernel/entry.S7
-rw-r--r--arch/m68k/kernel/process.c44
-rw-r--r--arch/m68k/kernel/syscalls/syscall.tbl2
-rw-r--r--arch/microblaze/Kconfig2
-rw-r--r--arch/microblaze/include/asm/vmalloc.h4
-rw-r--r--arch/microblaze/kernel/entry.S2
-rw-r--r--arch/mips/Kconfig2
-rw-r--r--arch/mips/ar7/clock.c8
-rw-r--r--arch/mips/ar7/gpio.c2
-rw-r--r--arch/mips/ar7/platform.c2
-rw-r--r--arch/mips/ath25/ar2315.c4
-rw-r--r--arch/mips/ath25/ar5312.c6
-rw-r--r--arch/mips/ath25/board.c2
-rw-r--r--arch/mips/ath79/common.c2
-rw-r--r--arch/mips/ath79/setup.c4
-rw-r--r--arch/mips/cavium-octeon/setup.c2
-rw-r--r--arch/mips/crypto/crc32-mips.c4
-rw-r--r--arch/mips/crypto/poly1305-glue.c18
-rw-r--r--arch/mips/generic/board-ocelot.c2
-rw-r--r--arch/mips/include/asm/asmmacro.h4
-rw-r--r--arch/mips/include/asm/io.h24
-rw-r--r--arch/mips/include/asm/vdso/gettimeofday.h2
-rw-r--r--arch/mips/include/asm/vmalloc.h4
-rw-r--r--arch/mips/kernel/entry.S6
-rw-r--r--arch/mips/kernel/mips-cm.c4
-rw-r--r--arch/mips/kernel/mips-cpc.c2
-rw-r--r--arch/mips/lantiq/falcon/sysctrl.c6
-rw-r--r--arch/mips/lantiq/irq.c4
-rw-r--r--arch/mips/lantiq/xway/sysctrl.c6
-rw-r--r--arch/mips/loongson2ef/common/reset.c4
-rw-r--r--arch/mips/loongson32/common/prom.c8
-rw-r--r--arch/mips/loongson32/common/reset.c2
-rw-r--r--arch/mips/loongson32/common/time.c2
-rw-r--r--arch/mips/loongson64/reset.c2
-rw-r--r--arch/mips/mti-malta/malta-dtshim.c2
-rw-r--r--arch/mips/pci/pci-alchemy.c2
-rw-r--r--arch/mips/pci/pci-ar2315.c2
-rw-r--r--arch/mips/pci/pci-bcm63xx.c2
-rw-r--r--arch/mips/pci/pci-rt2880.c2
-rw-r--r--arch/mips/pic32/pic32mzda/early_console.c2
-rw-r--r--arch/mips/pic32/pic32mzda/early_pin.c4
-rw-r--r--arch/mips/pmcs-msp71xx/msp_serial.c4
-rw-r--r--arch/mips/ralink/irq.c2
-rw-r--r--arch/mips/ralink/of.c2
-rw-r--r--arch/mips/rb532/devices.c2
-rw-r--r--arch/mips/rb532/gpio.c2
-rw-r--r--arch/mips/rb532/prom.c2
-rw-r--r--arch/mips/rb532/setup.c2
-rw-r--r--arch/mips/sni/rm200.c4
-rw-r--r--arch/mips/vdso/Makefile4
-rw-r--r--arch/nds32/Kconfig2
-rw-r--r--arch/nds32/include/asm/vmalloc.h4
-rw-r--r--arch/nds32/kernel/ex-exit.S4
-rw-r--r--arch/nds32/kernel/ftrace.c12
-rw-r--r--arch/nios2/include/asm/vmalloc.h4
-rw-r--r--arch/nios2/kernel/entry.S2
-rw-r--r--arch/openrisc/include/asm/vmalloc.h4
-rw-r--r--arch/parisc/Kconfig4
-rw-r--r--arch/parisc/include/asm/io.h5
-rw-r--r--arch/parisc/include/asm/vmalloc.h4
-rw-r--r--arch/parisc/kernel/entry.S10
-rw-r--r--arch/parisc/kernel/perf.c2
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diff --git a/.mailmap b/.mailmap
index d9d5c80252f9..bf581623ee3a 100644
--- a/.mailmap
+++ b/.mailmap
@@ -74,6 +74,7 @@ Dmitry Safonov <0x7f454c46@gmail.com> <dima@arista.com>
Domen Puncer <domen@coderock.org>
Douglas Gilbert <dougg@torque.net>
Ed L. Cashin <ecashin@coraid.com>
+Erik Kaneda <erik.kaneda@intel.com> <erik.schmauss@intel.com>
Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Felipe W Damasio <felipewd@terra.com.br>
Felix Kuhling <fxkuehl@gmx.de>
@@ -138,6 +139,7 @@ Juha Yrjola <at solidboot.com>
Juha Yrjola <juha.yrjola@nokia.com>
Juha Yrjola <juha.yrjola@solidboot.com>
Julien Thierry <julien.thierry.kdev@gmail.com> <julien.thierry@arm.com>
+Kamil Konieczny <k.konieczny@samsung.com> <k.konieczny@partner.samsung.com>
Kay Sievers <kay.sievers@vrfy.org>
Kenneth W Chen <kenneth.w.chen@intel.com>
Konstantin Khlebnikov <koct9i@gmail.com> <k.khlebnikov@samsung.com>
@@ -209,6 +211,10 @@ Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Patrick Mochel <mochel@digitalimplant.org>
Paul Burton <paulburton@kernel.org> <paul.burton@imgtec.com>
Paul Burton <paulburton@kernel.org> <paul.burton@mips.com>
+Paul E. McKenney <paulmck@kernel.org> <paulmck@linux.ibm.com>
+Paul E. McKenney <paulmck@kernel.org> <paulmck@linux.vnet.ibm.com>
+Paul E. McKenney <paulmck@kernel.org> <paul.mckenney@linaro.org>
+Paul E. McKenney <paulmck@kernel.org> <paulmck@us.ibm.com>
Peter A Jonsson <pj@ludd.ltu.se>
Peter Oruba <peter@oruba.de>
Peter Oruba <peter.oruba@amd.com>
@@ -217,6 +223,7 @@ Praveen BP <praveenbp@ti.com>
Punit Agrawal <punitagrawal@gmail.com> <punit.agrawal@arm.com>
Qais Yousef <qsyousef@gmail.com> <qais.yousef@imgtec.com>
Quentin Perret <qperret@qperret.net> <quentin.perret@arm.com>
+Rafael J. Wysocki <rjw@rjwysocki.net> <rjw@sisk.pl>
Rajesh Shah <rajesh.shah@intel.com>
Ralf Baechle <ralf@linux-mips.org>
Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
diff --git a/Documentation/ABI/obsolete/sysfs-selinux-disable b/Documentation/ABI/obsolete/sysfs-selinux-disable
new file mode 100644
index 000000000000..c340278e3cf8
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-selinux-disable
@@ -0,0 +1,26 @@
+What: /sys/fs/selinux/disable
+Date: April 2005 (predates git)
+KernelVersion: 2.6.12-rc2 (predates git)
+Contact: selinux@vger.kernel.org
+Description:
+
+ The selinuxfs "disable" node allows SELinux to be disabled at runtime
+ prior to a policy being loaded into the kernel. If disabled via this
+ mechanism, SELinux will remain disabled until the system is rebooted.
+
+ The preferred method of disabling SELinux is via the "selinux=0" boot
+ parameter, but the selinuxfs "disable" node was created to make it
+ easier for systems with primitive bootloaders that did not allow for
+ easy modification of the kernel command line. Unfortunately, allowing
+ for SELinux to be disabled at runtime makes it difficult to secure the
+ kernel's LSM hooks using the "__ro_after_init" feature.
+
+ Thankfully, the need for the SELinux runtime disable appears to be
+ gone, the default Kconfig configuration disables this selinuxfs node,
+ and only one of the major distributions, Fedora, supports disabling
+ SELinux at runtime. Fedora is in the process of removing the
+ selinuxfs "disable" node and once that is complete we will start the
+ slow process of removing this code from the kernel.
+
+ More information on /sys/fs/selinux/disable can be found under the
+ CONFIG_SECURITY_SELINUX_DISABLE Kconfig option.
diff --git a/Documentation/ABI/stable/sysfs-class-tpm b/Documentation/ABI/stable/sysfs-class-tpm
index c0e23830f56a..58e94e7d55be 100644
--- a/Documentation/ABI/stable/sysfs-class-tpm
+++ b/Documentation/ABI/stable/sysfs-class-tpm
@@ -1,7 +1,7 @@
What: /sys/class/tpm/tpmX/device/
Date: April 2005
KernelVersion: 2.6.12
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The device/ directory under a specific TPM instance exposes
the properties of that TPM chip
@@ -9,7 +9,7 @@ Description: The device/ directory under a specific TPM instance exposes
What: /sys/class/tpm/tpmX/device/active
Date: April 2006
KernelVersion: 2.6.17
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "active" property prints a '1' if the TPM chip is accepting
commands. An inactive TPM chip still contains all the state of
an active chip (Storage Root Key, NVRAM, etc), and can be
@@ -21,7 +21,7 @@ Description: The "active" property prints a '1' if the TPM chip is accepting
What: /sys/class/tpm/tpmX/device/cancel
Date: June 2005
KernelVersion: 2.6.13
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "cancel" property allows you to cancel the currently
pending TPM command. Writing any value to cancel will call the
TPM vendor specific cancel operation.
@@ -29,7 +29,7 @@ Description: The "cancel" property allows you to cancel the currently
What: /sys/class/tpm/tpmX/device/caps
Date: April 2005
KernelVersion: 2.6.12
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "caps" property contains TPM manufacturer and version info.
Example output:
@@ -46,7 +46,7 @@ Description: The "caps" property contains TPM manufacturer and version info.
What: /sys/class/tpm/tpmX/device/durations
Date: March 2011
KernelVersion: 3.1
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "durations" property shows the 3 vendor-specific values
used to wait for a short, medium and long TPM command. All
TPM commands are categorized as short, medium or long in
@@ -69,7 +69,7 @@ Description: The "durations" property shows the 3 vendor-specific values
What: /sys/class/tpm/tpmX/device/enabled
Date: April 2006
KernelVersion: 2.6.17
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "enabled" property prints a '1' if the TPM chip is enabled,
meaning that it should be visible to the OS. This property
may be visible but produce a '0' after some operation that
@@ -78,7 +78,7 @@ Description: The "enabled" property prints a '1' if the TPM chip is enabled,
What: /sys/class/tpm/tpmX/device/owned
Date: April 2006
KernelVersion: 2.6.17
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "owned" property produces a '1' if the TPM_TakeOwnership
ordinal has been executed successfully in the chip. A '0'
indicates that ownership hasn't been taken.
@@ -86,7 +86,7 @@ Description: The "owned" property produces a '1' if the TPM_TakeOwnership
What: /sys/class/tpm/tpmX/device/pcrs
Date: April 2005
KernelVersion: 2.6.12
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "pcrs" property will dump the current value of all Platform
Configuration Registers in the TPM. Note that since these
values may be constantly changing, the output is only valid
@@ -109,7 +109,7 @@ Description: The "pcrs" property will dump the current value of all Platform
What: /sys/class/tpm/tpmX/device/pubek
Date: April 2005
KernelVersion: 2.6.12
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "pubek" property will return the TPM's public endorsement
key if possible. If the TPM has had ownership established and
is version 1.2, the pubek will not be available without the
@@ -161,7 +161,7 @@ Description: The "pubek" property will return the TPM's public endorsement
What: /sys/class/tpm/tpmX/device/temp_deactivated
Date: April 2006
KernelVersion: 2.6.17
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "temp_deactivated" property returns a '1' if the chip has
been temporarily deactivated, usually until the next power
cycle. Whether a warm boot (reboot) will clear a TPM chip
@@ -170,7 +170,7 @@ Description: The "temp_deactivated" property returns a '1' if the chip has
What: /sys/class/tpm/tpmX/device/timeouts
Date: March 2011
KernelVersion: 3.1
-Contact: tpmdd-devel@lists.sf.net
+Contact: linux-integrity@vger.kernel.org
Description: The "timeouts" property shows the 4 vendor-specific values
for the TPM's interface spec timeouts. The use of these
timeouts is defined by the TPM interface spec that the chip
@@ -183,3 +183,14 @@ Description: The "timeouts" property shows the 4 vendor-specific values
The four timeout values are shown in usecs, with a trailing
"[original]" or "[adjusted]" depending on whether the values
were scaled by the driver to be reported in usec from msecs.
+
+What: /sys/class/tpm/tpmX/tpm_version_major
+Date: October 2019
+KernelVersion: 5.5
+Contact: linux-integrity@vger.kernel.org
+Description: The "tpm_version_major" property shows the TCG spec major version
+ implemented by the TPM device.
+
+ Example output:
+
+ 2
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd
new file mode 100644
index 000000000000..f4be46cc6cb6
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd
@@ -0,0 +1,171 @@
+What: sys/bus/dsa/devices/dsa<m>/cdev_major
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The major number that the character device driver assigned to
+ this device.
+
+What: sys/bus/dsa/devices/dsa<m>/errors
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The error information for this device.
+
+What: sys/bus/dsa/devices/dsa<m>/max_batch_size
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The largest number of work descriptors in a batch.
+
+What: sys/bus/dsa/devices/dsa<m>/max_work_queues_size
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The maximum work queue size supported by this device.
+
+What: sys/bus/dsa/devices/dsa<m>/max_engines
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The maximum number of engines supported by this device.
+
+What: sys/bus/dsa/devices/dsa<m>/max_groups
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The maximum number of groups can be created under this device.
+
+What: sys/bus/dsa/devices/dsa<m>/max_tokens
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The total number of bandwidth tokens supported by this device.
+ The bandwidth tokens represent resources within the DSA
+ implementation, and these resources are allocated by engines to
+ support operations.
+
+What: sys/bus/dsa/devices/dsa<m>/max_transfer_size
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The number of bytes to be read from the source address to
+ perform the operation. The maximum transfer size is dependent on
+ the workqueue the descriptor was submitted to.
+
+What: sys/bus/dsa/devices/dsa<m>/max_work_queues
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The maximum work queue number that this device supports.
+
+What: sys/bus/dsa/devices/dsa<m>/numa_node
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The numa node number for this device.
+
+What: sys/bus/dsa/devices/dsa<m>/op_cap
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The operation capability bit mask specify the operation types
+ supported by the this device.
+
+What: sys/bus/dsa/devices/dsa<m>/state
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The state information of this device. It can be either enabled
+ or disabled.
+
+What: sys/bus/dsa/devices/dsa<m>/group<m>.<n>
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The assigned group under this device.
+
+What: sys/bus/dsa/devices/dsa<m>/engine<m>.<n>
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The assigned engine under this device.
+
+What: sys/bus/dsa/devices/dsa<m>/wq<m>.<n>
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The assigned work queue under this device.
+
+What: sys/bus/dsa/devices/dsa<m>/configurable
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: To indicate if this device is configurable or not.
+
+What: sys/bus/dsa/devices/dsa<m>/token_limit
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The maximum number of bandwidth tokens that may be in use at
+ one time by operations that access low bandwidth memory in the
+ device.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/group_id
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The group id that this work queue belongs to.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/size
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The work queue size for this work queue.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/type
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The type of this work queue, it can be "kernel" type for work
+ queue usages in the kernel space or "user" type for work queue
+ usages by applications in user space.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/cdev_minor
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The minor number assigned to this work queue by the character
+ device driver.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/mode
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The work queue mode type for this work queue.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/priority
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The priority value of this work queue, it is a vlue relative to
+ other work queue in the same group to control quality of service
+ for dispatching work from multiple workqueues in the same group.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/state
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The current state of the work queue.
+
+What: sys/bus/dsa/devices/wq<m>.<n>/threshold
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The number of entries in this work queue that may be filled
+ via a limited portal.
+
+What: sys/bus/dsa/devices/engine<m>.<n>/group_id
+Date: Oct 25, 2019
+KernelVersion: 5.6.0
+Contact: dmaengine@vger.kernel.org
+Description: The group that this engine belongs to.
diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
index 05601a90a9b6..b0d90cc696a8 100644
--- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io
+++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
@@ -1,5 +1,4 @@
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_health
-
Date: June 2018
KernelVersion: 4.19
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -19,7 +18,6 @@ Description: These files show with which CPLD versions have been burned
The files are read only.
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/fan_dir
-
Date: December 2018
KernelVersion: 5.0
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -30,7 +28,6 @@ Description: This file shows the system fans direction:
The files are read only.
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version
-
Date: November 2018
KernelVersion: 5.0
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -40,7 +37,6 @@ Description: These files show with which CPLD versions have been burned
The files are read only.
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/jtag_enable
-
Date: November 2018
KernelVersion: 5.0
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -108,7 +104,6 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_pwr_fail
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_comex
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_system
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_voltmon_upgrade_fail
-
Date: November 2018
KernelVersion: 5.0
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -130,6 +125,12 @@ Description: These files show with which CPLD versions have been burned
The files are read only.
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_thermal
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd
Date: June 2019
KernelVersion: 5.3
Contact: Vadim Pasternak <vadimpmellanox.com>
@@ -143,9 +144,65 @@ Description: These files show the system reset cause, as following:
The files are read only.
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_thermal
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
-What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config1
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config2
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: These files show system static topology identification
+ like system's static I2C topology, number and type of FPGA
+ devices within the system and so on.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_ac_pwr_fail
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_platform
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_soc
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_pwr_off
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: These files show the system reset causes, as following: reset
+ due to AC power failure, reset invoked from software by
+ assertion reset signal through CPLD. reset caused by signal
+ asserted by SOC through ACPI register, reset invoked from
+ software by assertion power off signal through CPLD.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pcie_asic_reset_dis
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: This file allows to retain ASIC up during PCIe root complex
+ reset, when attribute is set 1.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/vpd_wp
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: This file allows to overwrite system VPD hardware wrtie
+ protection when attribute is set 1.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/voltreg_update_status
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: This file exposes the configuration update status of burnable
+ voltage regulator devices. The status values are as following:
+ 0 - OK; 1 - CRC failure; 2 = I2C failure; 3 - in progress.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ufm_version
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimpmellanox.com>
+Description: This file exposes the firmware version of burnable voltage
+ regulator devices.
+
+ The file is read only.
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
index 01196e19afca..9758eb85ade3 100644
--- a/Documentation/ABI/testing/sysfs-class-devfreq
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -7,6 +7,13 @@ Description:
The name of devfreq object denoted as ... is same as the
name of device using devfreq.
+What: /sys/class/devfreq/.../name
+Date: November 2019
+Contact: Chanwoo Choi <cw00.choi@samsung.com>
+Description:
+ The /sys/class/devfreq/.../name shows the name of device
+ of the corresponding devfreq object.
+
What: /sys/class/devfreq/.../governor
Date: September 2011
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
@@ -48,12 +55,15 @@ What: /sys/class/devfreq/.../trans_stat
Date: October 2012
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
Description:
- This ABI shows the statistics of devfreq behavior on a
- specific device. It shows the time spent in each state and
- the number of transitions between states.
+ This ABI shows or clears the statistics of devfreq behavior
+ on a specific device. It shows the time spent in each state
+ and the number of transitions between states.
In order to activate this ABI, the devfreq target device
driver should provide the list of available frequencies
- with its profile.
+ with its profile. If need to reset the statistics of devfreq
+ behavior on a specific device, enter 0(zero) to 'trans_stat'
+ as following:
+ echo 0 > /sys/class/devfreq/.../trans_stat
What: /sys/class/devfreq/.../userspace/set_freq
Date: September 2011
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index fc20cde63d1e..2e0e3b45d02a 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -196,6 +196,12 @@ Description:
does not reflect it. Likewise, if one enables a deep state but a
lighter state still is disabled, then this has no effect.
+What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/default_status
+Date: December 2019
+KernelVersion: v5.6
+Contact: Linux power management list <linux-pm@vger.kernel.org>
+Description:
+ (RO) The default status of this state, "enabled" or "disabled".
What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/residency
Date: March 2014
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index 9e99f2909612..1efac0ddb417 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -46,3 +46,13 @@ Description:
* 0 - normal,
* 1 - overboost,
* 2 - silent
+
+What: /sys/devices/platform/<platform>/throttle_thermal_policy
+Date: Dec 2019
+KernelVersion: 5.6
+Contact: "Leonid Maksymchuk" <leonmaxx@gmail.com>
+Description:
+ Throttle thermal policy mode:
+ * 0 - default,
+ * 1 - overboost,
+ * 2 - silent
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
index 6f87b9dd384b..5e6ead29124c 100644
--- a/Documentation/ABI/testing/sysfs-power
+++ b/Documentation/ABI/testing/sysfs-power
@@ -407,3 +407,16 @@ Contact: Kalesh Singh <kaleshsingh96@gmail.com>
Description:
The /sys/power/suspend_stats/last_failed_step file contains
the last failed step in the suspend/resume path.
+
+What: /sys/power/sync_on_suspend
+Date: October 2019
+Contact: Jonas Meurer <jonas@freesources.org>
+Description:
+ This file controls whether or not the kernel will sync()
+ filesystems during system suspend (after freezing user space
+ and before suspending devices).
+
+ Writing a "1" to this file enables the sync() and writing a "0"
+ disables it. Reads from the file return the current value.
+ The default is "1" if the build-time "SUSPEND_SKIP_SYNC" config
+ flag is unset, or "0" otherwise.
diff --git a/Documentation/RCU/NMI-RCU.txt b/Documentation/RCU/NMI-RCU.rst
index 881353fd5bff..180958388ff9 100644
--- a/Documentation/RCU/NMI-RCU.txt
+++ b/Documentation/RCU/NMI-RCU.rst
@@ -1,4 +1,7 @@
+.. _NMI_rcu_doc:
+
Using RCU to Protect Dynamic NMI Handlers
+=========================================
Although RCU is usually used to protect read-mostly data structures,
@@ -9,7 +12,7 @@ work in "arch/x86/oprofile/nmi_timer_int.c" and in
"arch/x86/kernel/traps.c".
The relevant pieces of code are listed below, each followed by a
-brief explanation.
+brief explanation::
static int dummy_nmi_callback(struct pt_regs *regs, int cpu)
{
@@ -18,12 +21,12 @@ brief explanation.
The dummy_nmi_callback() function is a "dummy" NMI handler that does
nothing, but returns zero, thus saying that it did nothing, allowing
-the NMI handler to take the default machine-specific action.
+the NMI handler to take the default machine-specific action::
static nmi_callback_t nmi_callback = dummy_nmi_callback;
This nmi_callback variable is a global function pointer to the current
-NMI handler.
+NMI handler::
void do_nmi(struct pt_regs * regs, long error_code)
{
@@ -53,11 +56,12 @@ anyway. However, in practice it is a good documentation aid, particularly
for anyone attempting to do something similar on Alpha or on systems
with aggressive optimizing compilers.
-Quick Quiz: Why might the rcu_dereference_sched() be necessary on Alpha,
- given that the code referenced by the pointer is read-only?
+Quick Quiz:
+ Why might the rcu_dereference_sched() be necessary on Alpha, given that the code referenced by the pointer is read-only?
+:ref:`Answer to Quick Quiz <answer_quick_quiz_NMI>`
-Back to the discussion of NMI and RCU...
+Back to the discussion of NMI and RCU::
void set_nmi_callback(nmi_callback_t callback)
{
@@ -68,7 +72,7 @@ The set_nmi_callback() function registers an NMI handler. Note that any
data that is to be used by the callback must be initialized up -before-
the call to set_nmi_callback(). On architectures that do not order
writes, the rcu_assign_pointer() ensures that the NMI handler sees the
-initialized values.
+initialized values::
void unset_nmi_callback(void)
{
@@ -82,7 +86,7 @@ up any data structures used by the old NMI handler until execution
of it completes on all other CPUs.
One way to accomplish this is via synchronize_rcu(), perhaps as
-follows:
+follows::
unset_nmi_callback();
synchronize_rcu();
@@ -98,24 +102,23 @@ to free up the handler's data as soon as synchronize_rcu() returns.
Important note: for this to work, the architecture in question must
invoke nmi_enter() and nmi_exit() on NMI entry and exit, respectively.
+.. _answer_quick_quiz_NMI:
-Answer to Quick Quiz
-
- Why might the rcu_dereference_sched() be necessary on Alpha, given
- that the code referenced by the pointer is read-only?
+Answer to Quick Quiz:
+ Why might the rcu_dereference_sched() be necessary on Alpha, given that the code referenced by the pointer is read-only?
- Answer: The caller to set_nmi_callback() might well have
- initialized some data that is to be used by the new NMI
- handler. In this case, the rcu_dereference_sched() would
- be needed, because otherwise a CPU that received an NMI
- just after the new handler was set might see the pointer
- to the new NMI handler, but the old pre-initialized
- version of the handler's data.
+ The caller to set_nmi_callback() might well have
+ initialized some data that is to be used by the new NMI
+ handler. In this case, the rcu_dereference_sched() would
+ be needed, because otherwise a CPU that received an NMI
+ just after the new handler was set might see the pointer
+ to the new NMI handler, but the old pre-initialized
+ version of the handler's data.
- This same sad story can happen on other CPUs when using
- a compiler with aggressive pointer-value speculation
- optimizations.
+ This same sad story can happen on other CPUs when using
+ a compiler with aggressive pointer-value speculation
+ optimizations.
- More important, the rcu_dereference_sched() makes it
- clear to someone reading the code that the pointer is
- being protected by RCU-sched.
+ More important, the rcu_dereference_sched() makes it
+ clear to someone reading the code that the pointer is
+ being protected by RCU-sched.
diff --git a/Documentation/RCU/arrayRCU.txt b/Documentation/RCU/arrayRCU.rst
index f05a9afb2c39..4051ea3871ef 100644
--- a/Documentation/RCU/arrayRCU.txt
+++ b/Documentation/RCU/arrayRCU.rst
@@ -1,19 +1,21 @@
-Using RCU to Protect Read-Mostly Arrays
+.. _array_rcu_doc:
+Using RCU to Protect Read-Mostly Arrays
+=======================================
Although RCU is more commonly used to protect linked lists, it can
also be used to protect arrays. Three situations are as follows:
-1. Hash Tables
+1. :ref:`Hash Tables <hash_tables>`
-2. Static Arrays
+2. :ref:`Static Arrays <static_arrays>`
-3. Resizeable Arrays
+3. :ref:`Resizable Arrays <resizable_arrays>`
Each of these three situations involves an RCU-protected pointer to an
array that is separately indexed. It might be tempting to consider use
of RCU to instead protect the index into an array, however, this use
-case is -not- supported. The problem with RCU-protected indexes into
+case is **not** supported. The problem with RCU-protected indexes into
arrays is that compilers can play way too many optimization games with
integers, which means that the rules governing handling of these indexes
are far more trouble than they are worth. If RCU-protected indexes into
@@ -24,16 +26,20 @@ to be safely used.
That aside, each of the three RCU-protected pointer situations are
described in the following sections.
+.. _hash_tables:
Situation 1: Hash Tables
+------------------------
Hash tables are often implemented as an array, where each array entry
has a linked-list hash chain. Each hash chain can be protected by RCU
as described in the listRCU.txt document. This approach also applies
to other array-of-list situations, such as radix trees.
+.. _static_arrays:
Situation 2: Static Arrays
+--------------------------
Static arrays, where the data (rather than a pointer to the data) is
located in each array element, and where the array is never resized,
@@ -41,13 +47,17 @@ have not been used with RCU. Rik van Riel recommends using seqlock in
this situation, which would also have minimal read-side overhead as long
as updates are rare.
-Quick Quiz: Why is it so important that updates be rare when
- using seqlock?
+Quick Quiz:
+ Why is it so important that updates be rare when using seqlock?
+
+:ref:`Answer to Quick Quiz <answer_quick_quiz_seqlock>`
+.. _resizable_arrays:
-Situation 3: Resizeable Arrays
+Situation 3: Resizable Arrays
+------------------------------
-Use of RCU for resizeable arrays is demonstrated by the grow_ary()
+Use of RCU for resizable arrays is demonstrated by the grow_ary()
function formerly used by the System V IPC code. The array is used
to map from semaphore, message-queue, and shared-memory IDs to the data
structure that represents the corresponding IPC construct. The grow_ary()
@@ -60,7 +70,7 @@ the remainder of the new, updates the ids->entries pointer to point to
the new array, and invokes ipc_rcu_putref() to free up the old array.
Note that rcu_assign_pointer() is used to update the ids->entries pointer,
which includes any memory barriers required on whatever architecture
-you are running on.
+you are running on::
static int grow_ary(struct ipc_ids* ids, int newsize)
{
@@ -112,7 +122,7 @@ a simple check suffices. The pointer to the structure corresponding
to the desired IPC object is placed in "out", with NULL indicating
a non-existent entry. After acquiring "out->lock", the "out->deleted"
flag indicates whether the IPC object is in the process of being
-deleted, and, if not, the pointer is returned.
+deleted, and, if not, the pointer is returned::
struct kern_ipc_perm* ipc_lock(struct ipc_ids* ids, int id)
{
@@ -144,8 +154,10 @@ deleted, and, if not, the pointer is returned.
return out;
}
+.. _answer_quick_quiz_seqlock:
Answer to Quick Quiz:
+ Why is it so important that updates be rare when using seqlock?
The reason that it is important that updates be rare when
using seqlock is that frequent updates can livelock readers.
diff --git a/Documentation/RCU/index.rst b/Documentation/RCU/index.rst
index 5c99185710fa..81a0a1e5f767 100644
--- a/Documentation/RCU/index.rst
+++ b/Documentation/RCU/index.rst
@@ -7,8 +7,13 @@ RCU concepts
.. toctree::
:maxdepth: 3
+ arrayRCU
+ rcubarrier
+ rcu_dereference
+ whatisRCU
rcu
listRCU
+ NMI-RCU
UP
Design/Memory-Ordering/Tree-RCU-Memory-Ordering
diff --git a/Documentation/RCU/lockdep-splat.txt b/Documentation/RCU/lockdep-splat.txt
index 9c015976b174..b8096316fd11 100644
--- a/Documentation/RCU/lockdep-splat.txt
+++ b/Documentation/RCU/lockdep-splat.txt
@@ -99,7 +99,7 @@ With this change, the rcu_dereference() is always within an RCU
read-side critical section, which again would have suppressed the
above lockdep-RCU splat.
-But in this particular case, we don't actually deference the pointer
+But in this particular case, we don't actually dereference the pointer
returned from rcu_dereference(). Instead, that pointer is just compared
to the cic pointer, which means that the rcu_dereference() can be replaced
by rcu_access_pointer() as follows:
diff --git a/Documentation/RCU/rcu_dereference.txt b/Documentation/RCU/rcu_dereference.rst
index bf699e8cfc75..c9667eb0d444 100644
--- a/Documentation/RCU/rcu_dereference.txt
+++ b/Documentation/RCU/rcu_dereference.rst
@@ -1,4 +1,7 @@
+.. _rcu_dereference_doc:
+
PROPER CARE AND FEEDING OF RETURN VALUES FROM rcu_dereference()
+===============================================================
Most of the time, you can use values from rcu_dereference() or one of
the similar primitives without worries. Dereferencing (prefix "*"),
@@ -8,7 +11,7 @@ subtraction of constants, and casts all work quite naturally and safely.
It is nevertheless possible to get into trouble with other operations.
Follow these rules to keep your RCU code working properly:
-o You must use one of the rcu_dereference() family of primitives
+- You must use one of the rcu_dereference() family of primitives
to load an RCU-protected pointer, otherwise CONFIG_PROVE_RCU
will complain. Worse yet, your code can see random memory-corruption
bugs due to games that compilers and DEC Alpha can play.
@@ -25,24 +28,24 @@ o You must use one of the rcu_dereference() family of primitives
for an example where the compiler can in fact deduce the exact
value of the pointer, and thus cause misordering.
-o You are only permitted to use rcu_dereference on pointer values.
+- You are only permitted to use rcu_dereference on pointer values.
The compiler simply knows too much about integral values to
trust it to carry dependencies through integer operations.
There are a very few exceptions, namely that you can temporarily
cast the pointer to uintptr_t in order to:
- o Set bits and clear bits down in the must-be-zero low-order
+ - Set bits and clear bits down in the must-be-zero low-order
bits of that pointer. This clearly means that the pointer
must have alignment constraints, for example, this does
-not- work in general for char* pointers.
- o XOR bits to translate pointers, as is done in some
+ - XOR bits to translate pointers, as is done in some
classic buddy-allocator algorithms.
It is important to cast the value back to pointer before
doing much of anything else with it.
-o Avoid cancellation when using the "+" and "-" infix arithmetic
+- Avoid cancellation when using the "+" and "-" infix arithmetic
operators. For example, for a given variable "x", avoid
"(x-(uintptr_t)x)" for char* pointers. The compiler is within its
rights to substitute zero for this sort of expression, so that
@@ -54,16 +57,16 @@ o Avoid cancellation when using the "+" and "-" infix arithmetic
"p+a-b" is safe because its value still necessarily depends on
the rcu_dereference(), thus maintaining proper ordering.
-o If you are using RCU to protect JITed functions, so that the
+- If you are using RCU to protect JITed functions, so that the
"()" function-invocation operator is applied to a value obtained
(directly or indirectly) from rcu_dereference(), you may need to
interact directly with the hardware to flush instruction caches.