1. 14 Mar, 2019 2 commits
    • Rafael J. Wysocki's avatar
      Merge branches 'pm-cpuidle' and 'pm-cpufreq' · 4650b279
      Rafael J. Wysocki authored
      * pm-cpuidle:
        cpuidle: governor: Add new governors to cpuidle_governors again
        cpuidle: menu: Avoid overflows when computing variance
      
      * pm-cpufreq:
        cpufreq: intel_pstate: Fix up iowait_boost computation
        cpufreq: pxa2xx: remove incorrect __init annotation
        cpufreq: Improve kerneldoc comments for cpufreq_cpu_get/put()
      4650b279
    • Rafael J. Wysocki's avatar
      Merge branches 'pm-core', 'pm-sleep' and 'pm-qos' · e6035258
      Rafael J. Wysocki authored
      * pm-core:
        PM-runtime: Call pm_runtime_active|suspended_time() from sysfs
        PM-runtime: Consolidate code to get active/suspended time
      
      * pm-sleep:
        PM / wakeup: Drop wakeup_source_drop()
        PM / wakeup: Rework wakeup source timer cancellation
      
      * pm-qos:
        PM / QoS: Fix typo in file description
      e6035258
  2. 12 Mar, 2019 4 commits
  3. 11 Mar, 2019 1 commit
  4. 07 Mar, 2019 6 commits
  5. 06 Mar, 2019 27 commits
    • Linus Torvalds's avatar
      Merge tag 'pm-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · ef800684
      Linus Torvalds authored
      Pull power management updates from Rafael Wysocki:
       "These are PM-runtime framework changes to use ktime instead of jiffies
        for accounting, new PM core flag to mark devices that don't need any
        form of power management, cpuidle updates including driver API
        documentation and a new governor, cpufreq updates including a new
        driver for Armada 8K, thermal cleanups and more, some energy-aware
        scheduling (EAS) enabling changes, new chips support in the intel_idle
        and RAPL drivers and assorted cleanups in some other places.
      
        Specifics:
      
         - Update the PM-runtime framework to use ktime instead of jiffies for
           accounting (Thara Gopinath, Vincent Guittot)
      
         - Optimize the autosuspend code in the PM-runtime framework somewhat
           (Ladislav Michl)
      
         - Add a PM core flag to mark devices that don't need any form of
           power management (Sudeep Holla)
      
         - Introduce driver API documentation for cpuidle and add a new
           cpuidle governor for tickless systems (Rafael Wysocki)
      
         - Add Jacobsville support to the intel_idle driver (Zhang Rui)
      
         - Clean up a cpuidle core header file and the cpuidle-dt and ACPI
           processor-idle drivers (Yangtao Li, Joseph Lo, Yazen Ghannam)
      
         - Add new cpufreq driver for Armada 8K (Gregory Clement)
      
         - Fix and clean up cpufreq core (Rafael Wysocki, Viresh Kumar, Amit
           Kucheria)
      
         - Add support for light-weight tear-down and bring-up of CPUs to the
           cpufreq core and use it in the cpufreq-dt driver (Viresh Kumar)
      
         - Fix cpu_cooling Kconfig dependencies, add support for CPU cooling
           auto-registration to the cpufreq core and use it in multiple
           cpufreq drivers (Amit Kucheria)
      
         - Fix some minor issues and do some cleanups in the davinci,
           e_powersaver, ap806, s5pv210, qcom and kryo cpufreq drivers
           (Bartosz Golaszewski, Gustavo Silva, Julia Lawall, Paweł Chmiel,
           Taniya Das, Viresh Kumar)
      
         - Add a Hisilicon CPPC quirk to the cppc_cpufreq driver (Xiongfeng
           Wang)
      
         - Clean up the intel_pstate and acpi-cpufreq drivers (Erwan Velu,
           Rafael Wysocki)
      
         - Clean up multiple cpufreq drivers (Yangtao Li)
      
         - Update cpufreq-related MAINTAINERS entries (Baruch Siach, Lukas
           Bulwahn)
      
         - Add support for exposing the Energy Model via debugfs and make
           multiple cpufreq drivers register an Energy Model to support
           energy-aware scheduling (Quentin Perret, Dietmar Eggemann, Matthias
           Kaehlcke)
      
         - Add Ice Lake mobile and Jacobsville support to the Intel RAPL
           power-capping driver (Gayatri Kammela, Zhang Rui)
      
         - Add a power estimation helper to the operating performance points
           (OPP) framework and clean up a core function in it (Quentin Perret,
           Viresh Kumar)
      
         - Make minor improvements in the generic power domains (genpd), OPP
           and system suspend frameworks and in the PM core (Aditya Pakki,
           Douglas Anderson, Greg Kroah-Hartman, Rafael Wysocki, Yangtao Li)"
      
      * tag 'pm-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (80 commits)
        cpufreq: kryo: Release OPP tables on module removal
        cpufreq: ap806: add missing of_node_put after of_device_is_available
        cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
        cpufreq: Pass updated policy to driver ->setpolicy() callback
        cpufreq: Fix two debug messages in cpufreq_set_policy()
        cpufreq: Reorder and simplify cpufreq_update_policy()
        cpufreq: Add kerneldoc comments for two core functions
        PM / core: Add support to skip power management in device/driver model
        cpufreq: intel_pstate: Rework iowait boosting to be less aggressive
        cpufreq: intel_pstate: Eliminate intel_pstate_get_base_pstate()
        cpufreq: intel_pstate: Avoid redundant initialization of local vars
        powercap/intel_rapl: add Ice Lake mobile
        ACPI / processor: Set P_LVL{2,3} idle state descriptions
        cpufreq / cppc: Work around for Hisilicon CPPC cpufreq
        ACPI / CPPC: Add a helper to get desired performance
        cpufreq: davinci: move configuration to include/linux/platform_data
        cpufreq: speedstep: convert BUG() to BUG_ON()
        cpufreq: powernv: fix missing check of return value in init_powernv_pstates()
        cpufreq: longhaul: remove unneeded semicolon
        cpufreq: pcc-cpufreq: remove unneeded semicolon
        ..
      ef800684
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 8dcd175b
      Linus Torvalds authored
      Merge misc updates from Andrew Morton:
      
       - a few misc things
      
       - ocfs2 updates
      
       - most of MM
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (159 commits)
        tools/testing/selftests/proc/proc-self-syscall.c: remove duplicate include
        proc: more robust bulk read test
        proc: test /proc/*/maps, smaps, smaps_rollup, statm
        proc: use seq_puts() everywhere
        proc: read kernel cpu stat pointer once
        proc: remove unused argument in proc_pid_lookup()
        fs/proc/thread_self.c: code cleanup for proc_setup_thread_self()
        fs/proc/self.c: code cleanup for proc_setup_self()
        proc: return exit code 4 for skipped tests
        mm,mremap: bail out earlier in mremap_to under map pressure
        mm/sparse: fix a bad comparison
        mm/memory.c: do_fault: avoid usage of stale vm_area_struct
        writeback: fix inode cgroup switching comment
        mm/huge_memory.c: fix "orig_pud" set but not used
        mm/hotplug: fix an imbalance with DEBUG_PAGEALLOC
        mm/memcontrol.c: fix bad line in comment
        mm/cma.c: cma_declare_contiguous: correct err handling
        mm/page_ext.c: fix an imbalance with kmemleak
        mm/compaction: pass pgdat to too_many_isolated() instead of zone
        mm: remove zone_lru_lock() function, access ->lru_lock directly
        ...
      8dcd175b
    • Linus Torvalds's avatar
      Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · afe6fe70
      Linus Torvalds authored
      Pull ARM SoC late updates from Arnd Bergmann:
       "Here are two branches that came relatively late during the linux-5.0
        development cycle and have dependencies on the other branches:
      
         - On the TI OMAP platform, the CPSW Ethernet PHY mode selection
           driver is being replaced, this puts the final pieces in place
      
         - On the DaVinci platform, the interrupt handling code in arch/arm
           gets moved into a regular device driver in drivers/irqchip.
      
        Since they both had some time in linux-next after the 5.0-rc8 release,
        I'm sending them along with the other updates"
      
      * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
        net: ethernet: ti: cpsw: deprecate cpsw-phy-sel driver
        ARM: davinci: remove intc related fields from davinci_soc_info
        irqchip: davinci-cp-intc: move the driver to drivers/irqchip
        ARM: davinci: cp-intc: remove redundant comments
        ARM: davinci: cp-intc: drop GPL license boilerplate
        ARM: davinci: cp-intc: use readl/writel_relaxed()
        ARM: davinci: cp-intc: unify error handling
        ARM: davinci: cp-intc: improve coding style
        ARM: davinci: cp-intc: request the memory region before remapping it
        ARM: davinci: cp-intc: use the new-style config structure
        ARM: davinci: cp-intc: convert all hex numbers to lowercase
        ARM: davinci: cp-intc: use a common prefix for all symbols
        ARM: davinci: cp-intc: add the new config structures for da8xx SoCs
        irqchip: davinci-cp-intc: add a new config structure
        ARM: davinci: cp-intc: add a wrapper around cp_intc_init()
        ARM: davinci: cp-intc: remove cp_intc.h
        irqchip: davinci-aintc: move the driver to drivers/irqchip
        ARM: davinci: aintc: remove unnecessary includes
        ARM: davinci: aintc: remove the timer-specific irq_set_handler()
        ARM: davinci: aintc: request memory region before remapping it
        ...
      afe6fe70
    • Linus Torvalds's avatar
      Merge tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 64b1b217
      Linus Torvalds authored
      Pull ARM new SoC family support from Arnd Bergmann:
       "Two new SoC families are added this time.
      
        Sugaya Taichi submitted support for the Milbeaut SoC family from
        Socionext and explains:
      
          "SC2000 is a SoC of the Milbeaut series. equipped with a DSP
           optimized for computer vision. It also features advanced
           functionalities such as 360-degree, real-time spherical stitching
           with multi cameras, image stabilization for without mechanical
           gimbals, and rolling shutter correction. More detail is below:
      
             https://www.socionext.com/en/products/assp/milbeaut/SC2000.html"
      
        Interestingly, this one has a history dating back to older chips made
        by Socionext and previously Matsushita/Panasonic based on their own
        mn10300 CPU architecture that was removed from the kernel last year.
      
        Manivannan Sadhasivam adds support for another SoC family, this is the
        Bitmain BM1880 chip used in the Sophon Edge TPU developer board.
      
        The chip is intended for Deep Learning applications, and comes with
        dual-core Arm Cortex-A53 to run Linux as well as a RISC-V
        microcontroller core to control the tensor unit. For the moment, the
        TPU is not accessible in mainline Linux, so we treat it as a generic
        Arm SoC.
      
        More information is available at
      
             https://www.sophon.ai/"
      
      * tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
        ARM: multi_v7_defconfig: add ARCH_MILBEAUT and ARCH_MILBEAUT_M10V
        ARM: configs: Add Milbeaut M10V defconfig
        ARM: dts: milbeaut: Add device tree set for the Milbeaut M10V board
        clocksource/drivers/timer-milbeaut: Introduce timer for Milbeaut SoCs
        dt-bindings: timer: Add Milbeaut M10V timer description
        ARM: milbeaut: Add basic support for Milbeaut m10v SoC
        dt-bindings: Add documentation for Milbeaut SoCs
        dt-bindings: arm: Add SMP enable-method for Milbeaut
        dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram
        MAINTAINERS: Add entry for Bitmain SoC platform
        arm64: dts: bitmain: Add Sophon Egde board support
        arm64: dts: bitmain: Add BM1880 SoC support
        arm64: Add ARCH_BITMAIN platform
        dt-bindings: arm: Document Bitmain BM1880 SoC
      64b1b217
    • Linus Torvalds's avatar
      Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · fb686ad2
      Linus Torvalds authored
      Pull ARM SoC defconfig updates from Arnd Bergmann:
       "We regenerated the defconfig files for samsung, shmobile, lpc18xx,
        lpc32xx, omap2, and nhk8815.
      
        Lots of additional drivers added on samsung and nhk8815, as well as
        the new pl110 driver on all machines that have it.
      
        The remaining changes are mostly to enable newly added drivers, and in
        case of imx8mq together with the SoC getting merged"
      
      * tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
        ARM: spear3xx_defconfig: Activate PL111 DRM driver
        ARM: nhk8815_defconfig: Add new options
        ARM: nhk8815_defconfig: Update defconfig
        ARM: pxa: remove CONFIG_SND_PXA2XX_AC97 in pxa_defconfig
        ARM: defconfig: integrator: Switch to DRM
        arm64: defconfig: Add IMX2+ watchdog
        arm64: defconfig: Enable PFUZE100 regulator
        arm64: defconfig: enable NXP FlexSPI driver
        arm64: defconfig: Add i.MX8MQ boot necessary configs
        arm64: defconfig: add imx8qxp support
        arm64: defconfig: add i.MX system controller RTC support
        arm64: defconfig: Enable Tegra TCU
        arm64: defconfig: Enable MAX8973 regulator
        ARM: socfpga_defconfig: enable BLK_DEV_LOOP config option
        ARM: defconfig: lpc32xx: enable DRM simple panel driver
        ARM: defconfig: lpc32xx: enable fixed voltage regulator support
        arm64: defconfig: Enable SUN6I Camera sensor interface
        arm64: defconfig: Enable I2C_GPIO
        ARM: omap2plus_defconfig: Update for moved options
        ARM: omap2plus_defconfig: Update for dropped options
        ...
      fb686ad2
    • Linus Torvalds's avatar
      Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 384d11fa
      Linus Torvalds authored
      Pull ARM SoC driver updates from Arnd Bergmann:
       "As usual, the drivers/tee and drivers/reset subsystems get merged
        here, with the expected set of smaller updates and some new hardware
        support. The tee subsystem now supports device drivers to be attached
        to a tee, the first example here is a random number driver with its
        implementation in the secure world.
      
        Three new power domain drivers get added for specific chip families:
         - Broadcom BCM283x chips (used in Raspberry Pi)
         - Qualcomm Snapdragon phone chips
         - Xilinx ZynqMP FPGA SoCs
      
        One new driver is added to talk to the BPMP firmware on NVIDIA
        Tegra210
      
        Existing drivers are extended for new SoC variants from NXP, NVIDIA,
        Amlogic and Qualcomm"
      
      * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits)
        tee: optee: update optee_msg.h and optee_smc.h to dual license
        tee: add cancellation support to client interface
        dpaa2-eth: configure the cache stashing amount on a queue
        soc: fsl: dpio: configure cache stashing destination
        soc: fsl: dpio: enable frame data cache stashing per software portal
        soc: fsl: guts: make fsl_guts_get_svr() static
        hwrng: make symbol 'optee_rng_id_table' static
        tee: optee: Fix unsigned comparison with less than zero
        hwrng: Fix unsigned comparison with less than zero
        tee: fix possible error pointer ctx dereferencing
        hwrng: optee: Initialize some structs using memset instead of braces
        tee: optee: Initialize some structs using memset instead of braces
        soc: fsl: dpio: fix memory leak of a struct qbman on error exit path
        clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static
        soc: qcom: llcc-slice: Fix typos
        qcom: soc: llcc-slice: Consolidate some code
        qcom: soc: llcc-slice: Clear the global drv_data pointer on error
        drivers: soc: xilinx: Add ZynqMP power domain driver
        firmware: xilinx: Add APIs to control node status/power
        dt-bindings: power: Add ZynqMP power domain bindings
        ...
      384d11fa
    • Linus Torvalds's avatar
      Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 6ad63dec
      Linus Torvalds authored
      Pull ARM SoC device tree updates from Arnd Bergmann:
       "This is a smaller update than the past few times, but with just over
        500 non-merge changesets still dwarfes the rest of the SoC tree.
      
        Three new SoC platforms get added, each one a follow-up to an existing
        product, and added here in combination with a reference platform:
      
         - Renesas RZ/A2M (R7S9210) 32-bit Cortex-A9 Real-time imaging
           processor:
      
             https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/rz/rza/rza2m.html
      
         - Renesas RZ/G2E (r8a774c0) 64-bit Cortex-A53 SoC "for Rich Graphics
           Applications":
      
             https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/rz/rzg/rzg2e.html
      
         - NXP i.MX8QuadXPlus 64-bit Cortex-A35 SoC:
      
             https://www.nxp.com/products/processors-and-microcontrollers/arm-based-processors-and-mcus/i.mx-applications-processors/i.mx-8-processors/i.mx-8x-family-arm-cortex-a35-3d-graphics-4k-video-dsp-error-correcting-code-on-ddr:i.MX8X
      
        These are actual commercial products we now support with an in-kernel
        device tree source file:
      
         - Bosch Guardian is a product made by Bosch Power Tools GmbH, based
           on the Texas Instruments AM335x chip
      
         - Winterland IceBoard is a Texas Instruments AM3874 based machine
           used in telescopes at the south pole and elsewhere, see commit
           d0317731 for some pointers:
      
         - Inspur on5263m5 is an x86 server platform with an Aspeed ast2500
           baseboard management controller. This is for running on the BMC.
      
         - Zodiac Digital Tapping Unit, apparently a kind of ethernet switch
           used in airplanes.
      
         - Phicomm K3 is a WiFi router based on Broadcom bcm47094
      
         - Methode Electronics uDPU FTTdp distribution point unit
      
         - X96 Max, a generic TV box based on Amlogic G12a (S905X2)
      
         - NVIDIA Shield TV (Darcy) based on Tegra210
      
        And then there are several new SBC, evaluation, development or modular
        systems that we add:
      
         - Three new Rockchips rk3399 based boards:
             - FriendlyElec NanoPC-T4 and NanoPi M4
             - Radxa ROCK Pi 4
      
         - Five new i.MX6 family SoM modules and boards for industrial
           products:
             - Logic PD i.MX6QD SoM and evaluation baseboad
             - Y Soft IOTA Draco/Hydra/Ursa family boards based on i.MX6DL
             - Phytec phyCORE i.MX6 UltraLite SoM and evaluation module
      
         - MYIR Tech MYD-LPC4357 development based on the NXP lpc4357
           microcontroller
      
         - Chameleon96, an Intel/Altera Cyclone5 based FPGA development system
           in 96boards form factor
      
         - Arm Fixed Virtual Platforms(FVP) Base RevC, a purely virtual
           platform for corresponding to the latest "fast model"
      
         - Another Raspberry Pi variant: Model 3 A+, supported both in 32-bit
           and 64-bit mode.
      
         - Oxalis Evalkit V100 based on NXP Layerscape LS1012a, in 96Boards
           enterprise form factor
      
         - Elgin RV1108 R1 development board based on 32-bit Rockchips RV1108
      
        For already supported boards and SoCs, we often add support for new
        devices after merging the drivers. This time, the largest changes
        include updates for
      
         - STMicroelectronics stm32mp1, which was now formally launched last
           week
      
         - Qualcomm Snapdragon 845, a high-end phone and low-end laptop chip
      
         - Action Semi S700
      
         - TI AM654x, their recently merged 64-bit SoC from the OMAP family
      
         - Various Amlogic Meson SoCs
      
         - Mediatek MT2712
      
         - NVIDIA Tegra186 and Tegra210
      
         - The ancient NXP lpc32xx family
      
         - Samsung s5pv210, used in some older mobile phones
      
        Many other chips see smaller updates and bugfixes beyond that"
      
      * tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (506 commits)
        ARM: dts: exynos: Fix max voltage for buck8 regulator on Odroid XU3/XU4
        dt-bindings: net: ti: deprecate cpsw-phy-sel bindings
        ARM: dts: am335x: switch to use phy-gmii-sel
        ARM: dts: am4372: switch to use phy-gmii-sel
        ARM: dts: dm814x: switch to use phy-gmii-sel
        ARM: dts: dra7: switch to use phy-gmii-sel
        arch: arm: dts: kirkwood-rd88f6281: Remove disabled marvell,dsa reference
        ARM: dts: exynos: Add support for secondary DAI to Odroid XU4
        ARM: dts: exynos: Add support for secondary DAI to Odroid XU3
        ARM: dts: exynos: Disable ARM PMU on Odroid XU3-lite
        ARM: dts: exynos: Add stdout path property to Arndale board
        ARM: dts: exynos: Add minimal clkout parameters to Exynos3250 PMU
        ARM: dts: exynos: Enable ADC on Odroid HC1
        arm64: dts: sprd: Remove wildcard compatible string
        arm64: dts: sprd: Add SC27XX fuel gauge device
        arm64: dts: sprd: Add SC2731 charger device
        arm64: dts: sprd: Add ADC calibration support
        arm64: dts: sprd: Remove PMIC INTC irq trigger type
        arm64: dts: rockchip: Enable tsadc device on rock960
        ARM: dts: rockchip: add chosen node on veyron devices
        ...
      6ad63dec
    • Linus Torvalds's avatar
      Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · aebbfafc
      Linus Torvalds authored
      Pull ARM SoC platform updates from Arnd Bergmann:
       "The APM X-Gene platform is now maintained by folks from Ampere
        computing that took over the product line a while ago, this gets
        reflected in the MAINTAINERS file.
      
        Cleanups continue on the older mach-davinci and mach-pxa platform, to
        get them to be more like the modern ones. For pxa, we now remove the
        Raumfeld platform code as it now works with device tree based booting.
      
        i.MX adds a couple new features for the i.MX7ULP SoC
      
        Mediatek gains support for a new SoC: MT7629 is a new wireless router
        platform, following MT7623.
      
        Aside from those, there are the usual minor cleanups and bugfixes
        across several platforms"
      
      * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (49 commits)
        MAINTAINERS: Update Ampere email address
        usb: ohci-da8xx: remove unused callbacks from platform data
        ARM: davinci: da830-evm: remove legacy usb helpers
        ARM: davinci: omapl138-hawk: remove legacy usb helpers
        usb: ohci-da8xx: add vbus and overcurrent gpios
        ARM: davinci: da830-evm: use gpio lookup entries for usb gpios
        ARM: davinci: omapl138-hawk: use gpio lookup entries for usb gpios
        usb: ohci-da8xx: add a helper pointer to &pdev->dev
        usb: ohci-da8xx: add a new line after local variables
        arm64: meson: enable g12a clock controller
        MAINTAINERS: Add entry for uDPU board
        ARM: davinci: da850-evm: use GPIO hogs instead of the legacy API
        arm: mediatek: add MT7629 smp bring up code
        Revert "ARM: mediatek: add MT7623a smp bringup code"
        dt-bindings: soc: fix typo of MT8173 power dt-bindings
        ARM: meson: remove COMMON_CLK_AMLOGIC selection
        arm64: meson: remove COMMON_CLK_AMLOGIC selection
        ARM: lpc32xx: remove platform data of ARM PL111 LCD controller
        ARM: lpc32xx: remove platform data of ARM PL180 SD/MMC controller
        ARM: lpc32xx: Use kmemdup to replace duplicating its implementation
        ...
      aebbfafc
    • Linus Torvalds's avatar
      Merge tag 'asm-generic-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic · fa29f5ba
      Linus Torvalds authored
      Pull asm-generic updates from Arnd Bergmann:
       "Only a few small changes this time:
      
         - Michael S. Tsirkin cleans up linux/mman.h
      
         - Mike Rapoport found a typo
      
        I had originally merged another cleanup series for I/O accessors from
        Hugo Lefeuvre as well, but dropped it after the discussion of the
        barrier semantics and some conflicts. I expect this series to get
        merged for a later release though"
      
      * tag 'asm-generic-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
        asm-generic/page.h: fix typo in #error text requiring a real asm/page.h
        arch: move common mmap flags to linux/mman.h
        drm: tweak header name
        x86/mpx: tweak header name
      fa29f5ba
    • Linus Torvalds's avatar
      Merge tag 'y2038-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground · 78e10b5e
      Linus Torvalds authored
      Pull y2038 build fix for compat mode from Arnd Bergmann:
       "Here is one more patch on top of the y2038 changes already pulled for
        linux-5.1, for some reason this had escaped all testing"
      
      * tag 'y2038-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground:
        ipc: Fix building compat mode without sysvipc
      78e10b5e
    • Linus Torvalds's avatar
      Merge branch 'x86-alternatives-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 6ea98b4b
      Linus Torvalds authored
      Pull x86 alternative instruction updates from Ingo Molnar:
       "Small RDTSCP opimization, enabled by the newly added ALTERNATIVE_3(),
        and other small improvements"
      
      * 'x86-alternatives-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/TSC: Use RDTSCP
        x86/alternatives: Add an ALTERNATIVE_3() macro
        x86/alternatives: Print containing function
        x86/alternatives: Add macro comments
      6ea98b4b
    • Linus Torvalds's avatar
      Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 45802da0
      Linus Torvalds authored
      Pull scheduler updates from Ingo Molnar:
       "The main changes in this cycle were:
      
         - refcount conversions
      
         - Solve the rq->leaf_cfs_rq_list can of worms for real.
      
         - improve power-aware scheduling
      
         - add sysctl knob for Energy Aware Scheduling
      
         - documentation updates
      
         - misc other changes"
      
      * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
        kthread: Do not use TIMER_IRQSAFE
        kthread: Convert worker lock to raw spinlock
        sched/fair: Use non-atomic cpumask_{set,clear}_cpu()
        sched/fair: Remove unused 'sd' parameter from select_idle_smt()
        sched/wait: Use freezable_schedule() when possible
        sched/fair: Prune, fix and simplify the nohz_balancer_kick() comment block
        sched/fair: Explain LLC nohz kick condition
        sched/fair: Simplify nohz_balancer_kick()
        sched/topology: Fix percpu data types in struct sd_data & struct s_data
        sched/fair: Simplify post_init_entity_util_avg() by calling it with a task_struct pointer argument
        sched/fair: Fix O(nr_cgroups) in the load balancing path
        sched/fair: Optimize update_blocked_averages()
        sched/fair: Fix insertion in rq->leaf_cfs_rq_list
        sched/fair: Add tmp_alone_branch assertion
        sched/core: Use READ_ONCE()/WRITE_ONCE() in move_queued_task()/task_rq_lock()
        sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK
        sched/pelt: Skip updating util_est when utilization is higher than CPU's capacity
        sched/fair: Update scale invariance of PELT
        sched/fair: Move the rq_of() helper function
        sched/core: Convert task_struct.stack_refcount to refcount_t
        ...
      45802da0
    • Linus Torvalds's avatar
      Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 203b6609
      Linus Torvalds authored
      Pull perf updates from Ingo Molnar:
       "Lots of tooling updates - too many to list, here's a few highlights:
      
         - Various subcommand updates to 'perf trace', 'perf report', 'perf
           record', 'perf annotate', 'perf script', 'perf test', etc.
      
         - CPU and NUMA topology and affinity handling improvements,
      
         - HW tracing and HW support updates:
            - Intel PT updates
            - ARM CoreSight updates
            - vendor HW event updates
      
         - BPF updates
      
         - Tons of infrastructure updates, both on the build system and the
           library support side
      
         - Documentation updates.
      
         - ... and lots of other changes, see the changelog for details.
      
        Kernel side updates:
      
         - Tighten up kprobes blacklist handling, reduce the number of places
           where developers can install a kprobe and hang/crash the system.
      
         - Fix/enhance vma address filter handling.
      
         - Various PMU driver updates, small fixes and additions.
      
         - refcount_t conversions
      
         - BPF updates
      
         - error code propagation enhancements
      
         - misc other changes"
      
      * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (238 commits)
        perf script python: Add Python3 support to syscall-counts-by-pid.py
        perf script python: Add Python3 support to syscall-counts.py
        perf script python: Add Python3 support to stat-cpi.py
        perf script python: Add Python3 support to stackcollapse.py
        perf script python: Add Python3 support to sctop.py
        perf script python: Add Python3 support to powerpc-hcalls.py
        perf script python: Add Python3 support to net_dropmonitor.py
        perf script python: Add Python3 support to mem-phys-addr.py
        perf script python: Add Python3 support to failed-syscalls-by-pid.py
        perf script python: Add Python3 support to netdev-times.py
        perf tools: Add perf_exe() helper to find perf binary
        perf script: Handle missing fields with -F +..
        perf data: Add perf_data__open_dir_data function
        perf data: Add perf_data__(create_dir|close_dir) functions
        perf data: Fail check_backup in case of error
        perf data: Make check_backup work over directories
        perf tools: Add rm_rf_perf_data function
        perf tools: Add pattern name checking to rm_rf
        perf tools: Add depth checking to rm_rf
        perf data: Add global path holder
        ...
      203b6609
    • Linus Torvalds's avatar
      Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3478588b
      Linus Torvalds authored
      Pull locking updates from Ingo Molnar:
       "The biggest part of this tree is the new auto-generated atomics API
        wrappers by Mark Rutland.
      
        The primary motivation was to allow instrumentation without uglifying
        the primary source code.
      
        The linecount increase comes from adding the auto-generated files to
        the Git space as well:
      
          include/asm-generic/atomic-instrumented.h     | 1689 ++++++++++++++++--
          include/asm-generic/atomic-long.h             | 1174 ++++++++++---
          include/linux/atomic-fallback.h               | 2295 +++++++++++++++++++++++++
          include/linux/atomic.h                        | 1241 +------------
      
        I preferred this approach, so that the full call stack of the (already
        complex) locking APIs is still fully visible in 'git grep'.
      
        But if this is excessive we could certainly hide them.
      
        There's a separate build-time mechanism to determine whether the
        headers are out of date (they should never be stale if we do our job
        right).
      
        Anyway, nothing from this should be visible to regular kernel
        developers.
      
        Other changes:
      
         - Add support for dynamic keys, which removes a source of false
           positives in the workqueue code, among other things (Bart Van
           Assche)
      
         - Updates to tools/memory-model (Andrea Parri, Paul E. McKenney)
      
         - qspinlock, wake_q and lockdep micro-optimizations (Waiman Long)
      
         - misc other updates and enhancements"
      
      * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits)
        locking/lockdep: Shrink struct lock_class_key
        locking/lockdep: Add module_param to enable consistency checks
        lockdep/lib/tests: Test dynamic key registration
        lockdep/lib/tests: Fix run_tests.sh
        kernel/workqueue: Use dynamic lockdep keys for workqueues
        locking/lockdep: Add support for dynamic keys
        locking/lockdep: Verify whether lock objects are small enough to be used as class keys
        locking/lockdep: Check data structure consistency
        locking/lockdep: Reuse lock chains that have been freed
        locking/lockdep: Fix a comment in add_chain_cache()
        locking/lockdep: Introduce lockdep_next_lockchain() and lock_chain_count()
        locking/lockdep: Reuse list entries that are no longer in use
        locking/lockdep: Free lock classes that are no longer in use
        locking/lockdep: Update two outdated comments
        locking/lockdep: Make it easy to detect whether or not inside a selftest
        locking/lockdep: Split lockdep_free_key_range() and lockdep_reset_lock()
        locking/lockdep: Initialize the locks_before and locks_after lists earlier
        locking/lockdep: Make zap_class() remove all matching lock order entries
        locking/lockdep: Reorder struct lock_class members
        locking/lockdep: Avoid that add_chain_cache() adds an invalid chain to the cache
        ...
      3478588b
    • Linus Torvalds's avatar
      Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · c8f5ed6e
      Linus Torvalds authored
      Pull EFI updates from Ingo Molnar:
       "The main EFI changes in this cycle were:
      
         - Use 32-bit alignment for efi_guid_t
      
         - Allow the SetVirtualAddressMap() call to be omitted
      
         - Implement earlycon=efifb based on existing earlyprintk code
      
         - Various minor fixes and code cleanups from Sai, Ard and me"
      
      * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        efi: Fix build error due to enum collision between efi.h and ima.h
        efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
        x86: Make ARCH_USE_MEMREMAP_PROT a generic Kconfig symbol
        efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
        efi: Replace GPL license boilerplate with SPDX headers
        efi/fdt: Apply more cleanups
        efi: Use 32-bit alignment for efi_guid_t
        efi/memattr: Don't bail on zero VA if it equals the region's PA
        x86/efi: Mark can_free_region() as an __init function
      c8f5ed6e
    • Arnd Bergmann's avatar
      ipc: Fix building compat mode without sysvipc · 7e89a37c
      Arnd Bergmann authored
      As John Stultz noticed, my y2038 syscall series caused a link
      failure when CONFIG_SYSVIPC is disabled but CONFIG_COMPAT is
      enabled:
      
      arch/arm64/kernel/sys32.o:(.rodata+0x960): undefined reference to `__arm64_compat_sys_old_semctl'
      arch/arm64/kernel/sys32.o:(.rodata+0x980): undefined reference to `__arm64_compat_sys_old_msgctl'
      arch/arm64/kernel/sys32.o:(.rodata+0x9a0): undefined reference to `__arm64_compat_sys_old_shmctl'
      
      Add the missing entries in kernel/sys_ni.c for the new system
      calls.
      
      Cc: Laura Abbott <labbott@redhat.com>
      Cc: John Stultz <john.stultz@linaro.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      7e89a37c
    • Souptick Joarder's avatar
    • Alexey Dobriyan's avatar
      proc: more robust bulk read test · 332e0e80
      Alexey Dobriyan authored
      /proc may not be mounted and test will exit successfully.
      
      Ensure proc is mounted at /proc.
      
      Link: http://lkml.kernel.org/r/20190209105613.GA10384@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      332e0e80
    • Alexey Dobriyan's avatar
      proc: test /proc/*/maps, smaps, smaps_rollup, statm · e483b020
      Alexey Dobriyan authored
      Start testing VM related fiels found in per-process files.
      
      Do it by jiting small executable which brings its address space to
      precisely known state, then comparing /proc/*/maps, smaps, smaps_rollup,
      and statm files to expected values.
      
      Currently only x86_64 is supported.
      
      [adobriyan@gmail.com: exit correctly in /proc/*/maps test]
        Link: http://lkml.kernel.org/r/20190206073659.GB15311@avx2
      Link: http://lkml.kernel.org/r/20190203165806.GA14568@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Cc: Shuah Khan <shuah@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e483b020
    • Alexey Dobriyan's avatar
      proc: use seq_puts() everywhere · 08b55775
      Alexey Dobriyan authored
      seq_printf() without format specifiers == faster seq_puts()
      
      Link: http://lkml.kernel.org/r/20190114200545.GC9680@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      08b55775
    • Alexey Dobriyan's avatar
      proc: read kernel cpu stat pointer once · 5713f35c
      Alexey Dobriyan authored
      Help gcc generate better code:
      
      	$ ./scripts/bloat-o-meter ../vmlinux-000 ../vmlinux-001
      	add/remove: 2/2 grow/shrink: 0/1 up/down: 92/-142 (-50)
      	Function                                     old     new   delta
      	get_iowait_time.isra                           -      46     +46
      	get_idle_time.isra                             -      46     +46
      	show_stat                                   1489    1477     -12
      	get_iowait_time                               65       -     -65
      	get_idle_time                                 65       -     -65
      
      Link: http://lkml.kernel.org/r/20190114195907.GA9680@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      5713f35c
    • Zhikang Zhang's avatar
      867aaccf
    • Chengguang Xu's avatar
      fs/proc/thread_self.c: code cleanup for proc_setup_thread_self() · 45f68ab5
      Chengguang Xu authored
      Remove unnecessary ERR_PTR()/PTR_ERR() cast in proc_setup_thread_self().
      
      Link: http://lkml.kernel.org/r/20190124030150.8472-2-cgxu519@gmx.comSigned-off-by: default avatarChengguang Xu <cgxu519@gmx.com>
      Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Cc: Alexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      45f68ab5
    • Chengguang Xu's avatar
      fs/proc/self.c: code cleanup for proc_setup_self() · 756ca74c
      Chengguang Xu authored
      Remove unnecessary ERR_PTR()/PTR_ERR() cast in proc_setup_self().
      
      Link: http://lkml.kernel.org/r/20190124030150.8472-1-cgxu519@gmx.comSigned-off-by: default avatarChengguang Xu <cgxu519@gmx.com>
      Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Cc: Alexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      756ca74c
    • Alexey Dobriyan's avatar
      proc: return exit code 4 for skipped tests · 0338c838
      Alexey Dobriyan authored
      Test harness uses 4 for SKIP, not 2.
      
      Link: http://lkml.kernel.org/r/20190108193108.GA12259@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Cc: Shuah Khan <shuah@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0338c838
    • Oscar Salvador's avatar
      mm,mremap: bail out earlier in mremap_to under map pressure · ea2c3f6f
      Oscar Salvador authored
      When using mremap() syscall in addition to MREMAP_FIXED flag, mremap()
      calls mremap_to() which does the following:
      
      1) unmaps the destination region where we are going to move the map
      2) If the new region is going to be smaller, we unmap the last part
         of the old region
      
      Then, we will eventually call move_vma() to do the actual move.
      
      move_vma() checks whether we are at least 4 maps below max_map_count
      before going further, otherwise it bails out with -ENOMEM.  The problem
      is that we might have already unmapped the vma's in steps 1) and 2), so
      it is not possible for userspace to figure out the state of the vmas
      after it gets -ENOMEM, and it gets tricky for userspace to clean up
      properly on error path.
      
      While it is true that we can return -ENOMEM for more reasons (e.g: see
      may_expand_vm() or move_page_tables()), I think that we can avoid this
      scenario if we check early in mremap_to() if the operation has high
      chances to succeed map-wise.
      
      Should that not be the case, we can bail out before we even try to unmap
      anything, so we make sure the vma's are left untouched in case we are
      likely to be short of maps.
      
      The thumb-rule now is to rely on the worst-scenario case we can have.
      That is when both vma's (old region and new region) are going to be
      split in 3, so we get two more maps to the ones we already hold (one per
      each).  If current map count + 2 maps still leads us to 4 maps below the
      threshold, we are going to pass the check in move_vma().
      
      Of course, this is not free, as it might generate false positives when
      it is true that we are tight map-wise, but the unmap operation can
      release several vma's leading us to a good state.
      
      Another approach was also investigated [1], but it may be too much
      hassle for what it brings.
      
      [1] https://lore.kernel.org/lkml/20190219155320.tkfkwvqk53tfdojt@d104.suse.de/
      
      Link: http://lkml.kernel.org/r/20190226091314.18446-1-osalvador@suse.deSigned-off-by: default avatarOscar Salvador <osalvador@suse.de>
      Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
      Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
      Cc: Yang Shi <yang.shi@linux.alibaba.com>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: Joel Fernandes <joel@joelfernandes.org>
      Cc: Cyril Hrubis <chrubis@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ea2c3f6f
    • Qian Cai's avatar
      mm/sparse: fix a bad comparison · d778015a
      Qian Cai authored
      next_present_section_nr() could only return an unsigned number -1, so
      just check it specifically where compilers will convert -1 to unsigned
      if needed.
      
        mm/sparse.c: In function 'sparse_init_nid':
        mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
               ((section_nr >= 0) &&    \
                            ^~
        mm/sparse.c:478:2: note: in expansion of macro
        'for_each_present_section_nr'
          for_each_present_section_nr(pnum_begin, pnum) {
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
        mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
               ((section_nr >= 0) &&    \
                            ^~
        mm/sparse.c:497:2: note: in expansion of macro
        'for_each_present_section_nr'
          for_each_present_section_nr(pnum_begin, pnum) {
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
        mm/sparse.c: In function 'sparse_init':
        mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
               ((section_nr >= 0) &&    \
                            ^~
        mm/sparse.c:520:2: note: in expansion of macro
        'for_each_present_section_nr'
          for_each_present_section_nr(pnum_begin + 1, pnum_end) {
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
      
      Link: http://lkml.kernel.org/r/20190228181839.86504-1-cai@lca.pw
      Fixes: c4e1be9e ("mm, sparsemem: break out of loops early")
      Signed-off-by: default avatarQian Cai <cai@lca.pw>
      Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d778015a