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Author SHA1 Message Date
Linus Torvalds eadc4e40e6 Merge tag 'rtc-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux 
Pull RTC updates from Alexandre Belloni:
 "The VL_READ and VL_CLR ioctls have been reworked to be more useful.
  This will not break userspace as there are very few users and they are
  using the integer value as a boolean.

  Apart from that, two drivers were reworked and a few fixes here and
  there for a net reduction of number of lines.

  Summary:

  Subsystem:
   - the VL_READ and VL_CLR ioctls are now documented and their behavior
     is unified across all the drivers.
   - RTC_I2C_AND_SPI Kconfig option rework to avoid selecting both
     REGMAP_I2C and REGMAP_SPI unecessarily.

  Drivers:
   - at91rm9200: remove deprecated procfs, add sam9x60, sama5d4 and
     sama5d2 compatibles.
   - cmos: solve lost interrupts issue on MS Surface 3
   - hym8563: return proper errno when time is invalid
   - rv3029: many fixes, nvram support"

* tag 'rtc-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (63 commits)
  dt-bindings: rtc: at91rm9200: document clocks property
  rtc: i2c/spi: Avoid inclusion of REGMAP support when not needed
  rtc: Kconfig: select REGMAP_I2C when necessary
  rtc: Kconfig: properly indent sd3078 entry
  rtc: cmos: Refactor code by using the new dmi_get_bios_year() helper
  rtc: cmos: Use predefined value for RTC IRQ on legacy x86
  rtc: cmos: Stop using shared IRQ
  rtc: tps6586x: Use IRQ_NOAUTOEN flag
  rtc: at91rm9200: use FIELD_PREP/FIELD_GET
  rtc: at91rm9200: avoid time readout in at91_rtc_setalarm
  rtc: at91rm9200: move register definitions to C file
  rtc: at91rm9200: add sama5d4 and sama5d2 compatibles
  dt-bindings: rtc: at91rm9200: convert bindings to json-schema
  rtc: at91rm9200: remove procfs information
  dt-bindings: atmel, at91rm9200-rtc: add microchip, sam9x60-rtc
  rtc: pcf8563: Use BIT
  rtc: moxart: Convert to SPDX identifier
  rtc: ds1343: Remove unused struct spi_device in struct ds1343_priv
  rtc: rx8025: Remove struct i2c_client from struct rx8025_data
  rtc: hym8563: Read the valid flag directly instead of caching it
  ...
 2020-02-04 07:03:40 +00:00
Linus Torvalds 322bf2d344 Merge branch 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 
Pull percpu updates from Dennis Zhou:
 "Separate out variables that can be decrypted into their own page
  anytime encryption can be enabled and fix __percpu annotations in
  asm-generic for sparse"

* 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  percpu: Separate decrypted varaibles anytime encryption can be enabled
  percpu: fix __percpu annotation in asm-generic
 2020-02-03 22:27:33 +00:00
Linus Torvalds f4a6365ae8 Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux 
Pull clk updates from Stephen Boyd:
 "There are a few changes to the core framework this time around, in
  addition to the normal collection of driver updates to support new
  SoCs, fix incorrect data, and convert various drivers to clk_hw based
  APIs.

  In the core, we allow clk_ops::init() to return an error code now so
  that we can fail clk registration if the callback does something like
  fail to allocate memory. We also add a new "terminate" clk_op so that
  things done in clk_ops::init() can be undone, e.g. free memory. We
  also spit out a warning now when critical clks fail to enable and we
  support changing clk rates and enable/disable state through debugfs
  when developers compile the kernel themselves.

  On the driver front, we get support for what seems like a lot of
  Qualcomm and NXP SoCs given that those vendors dominate the diffstat.
  There are a couple new drivers for Xilinx and Amlogic SoCs too. The
  updates are all small things like fixing the way glitch free muxes
  switch parents, avoiding div-by-zero problems, or fixing data like
  parent names. See the updates section below for more details.

  Finally, the "basic" clk types have been converted to support
  specifying parents with clk_hw pointers. This work includes an
  overhaul of the fixed-rate clk type to be more modern by using clk_hw
  APIs.

  Core:
   - Let clk_ops::init() return an error code
   - Add a clk_ops::terminate() callback to undo clk_ops::init()
   - Warn about critical clks that fail to enable or prepare
   - Support dangerous debugfs actions on clks with dead code

  New Drivers:
   - Support for Xilinx Versal platform clks
   - Display clk controller on qcom sc7180
   - Video clk controller on qcom sc7180
   - Graphics clk controller on qcom sc7180
   - CPU PLLs for qcom msm8916
   - Move qcom msm8974 gfx3d clk to RPM control
   - Display port clk support on qcom sdm845 SoCs
   - Global clk controller on qcom ipq6018
   - Add a driver for BCLK of Freescale SAI cores
   - Add cam, vpe and sgx clock support for TI dra7
   - Add aess clock support for TI omap5
   - Enable clks for CPUfreq on Allwinner A64 SoCs
   - Add Amlogic meson8b DDR clock controller
   - Add input clocks to Amlogic meson8b controllers
   - Add SPIBSC (SPI FLASH) clock on Renesas RZ/A2
   - i.MX8MP clk driver support

  Updates:
   - Convert gpio, fixed-factor, mux, gate, divider basic clks to hw
     based APIs
   - Detect more PRMCU variants in ux500 driver
   - Adjust the composite clk type to new way of describing clk parents
   - Fixes for clk controllers on qcom msm8998 SoCs
   - Fix gmac main clock for TI dra7
   - Move TI dra7-atl clock header to correct location
   - Fix hidden node name dependency on TI clkctrl clocks
   - Fix Amlogic meson8b mali clock update using the glitch free mux
   - Fix Amlogic pll driver division by zero at init
   - Prepare for split of Renesas R-Car H3 ES1.x and ES2.0+ config
     symbols
   - Switch more i.MX clk drivers to clk_hw based APIs
   - Disable non-functional divider between pll4_audio_div and
     pll4_post_div on imx6q
   - Fix watchdog2 clock name typo in imx7ulp clock driver
   - Set CLK_GET_RATE_NOCACHE flag for DRAM related clocks on i.MX8M
     SoCs
   - Suppress bind attrs for i.MX8M clock driver
   - Add a big comment in imx8qxp-lpcg driver to tell why
     devm_platform_ioremap_resource() shouldn't be used for the driver
   - A correction on i.MX8MN usb1_ctrl parent clock setting"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (140 commits)
  dt/bindings: clk: fsl,plldig: Drop 'bindings' from schema id
  clk: ls1028a: Fix warning on clamp() usage
  clk: qoriq: add ls1088a hwaccel clocks support
  clk: ls1028a: Add clock driver for Display output interface
  dt/bindings: clk: Add YAML schemas for LS1028A Display Clock bindings
  clk: fsl-sai: new driver
  dt-bindings: clock: document the fsl-sai driver
  clk: composite: add _register_composite_pdata() variants
  clk: qcom: rpmh: Sort OF match table
  dt-bindings: fix warnings in validation of qcom,gcc.yaml
  dt-binding: fix compilation error of the example in qcom,gcc.yaml
  clk: zynqmp: Add support for clock with CLK_DIVIDER_POWER_OF_TWO flag
  clk: zynqmp: Fix divider calculation
  clk: zynqmp: Add support for get max divider
  clk: zynqmp: Warn user if clock user are more than allowed
  clk: zynqmp: Extend driver for versal
  dt-bindings: clock: Add bindings for versal clock driver
  clk: ti: clkctrl: Fix hidden dependency to node name
  clk: ti: add clkctrl data dra7 sgx
  clk: ti: omap5: Add missing AESS clock
  ...
 2020-02-03 22:10:18 +00:00
Linus Torvalds e17ac02b18 Merge tag 'kgdb-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux 
Pull kgdb updates from Daniel Thompson:
 "Everything for kgdb this time around is either simplifications or
  clean ups.

  In particular Douglas Anderson's modifications to the backtrace
  machine in the *last* dev cycle have enabled Doug to tidy up some MIPS
  specific backtrace code and stop sharing certain data structures
  across the kernel. Note that The MIPS folks were on Cc: for the MIPS
  patch and reacted positively (but without an explicit Acked-by).

  Doug also got rid of the implicit switching between tasks and register
  sets during some but not of kdb's backtrace actions (because the
  implicit switching was either confusing for users, pointless or both).

  Finally there is a coverity fix and patch to replace open coded
  console traversal with the proper helper function"

* tag 'kgdb-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kdb: Use for_each_console() helper
  kdb: remove redundant assignment to pointer bp
  kdb: Get rid of confusing diag msg from "rd" if current task has no regs
  kdb: Gid rid of implicit setting of the current task / regs
  kdb: kdb_current_task shouldn't be exported
  kdb: kdb_current_regs should be private
  MIPS: kdb: Remove old workaround for backtracing on other CPUs
 2020-02-03 16:59:51 +00:00
Linus Torvalds 2367da5b51 Merge tag 'backlight-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight 
Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Remove superfluous code in ams369fg06
   - Convert over to GPIO descriptor (gpiod) in bd6107

  Bug Fixes:
   - Fix unsigned comparison to less than zero in qcom-wled"

* tag 'backlight-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: qcom-wled: Fix unsigned comparison to zero
  backlight: bd6107: Convert to use GPIO descriptor
  backlight: ams369fg06: Drop GPIO include
 2020-02-03 14:55:08 +00:00
Linus Torvalds af32f3a414 Merge tag 'mfd-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd 
Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add support for ROHM BD71828 PMICs and GPIOs
   - Add support for Qualcomm Aqstic Audio Codecs WCD9340 and WCD9341

  New Device Support:
   - Add support for BD71828 to BD70528 RTC driver
   - Add support for Intel's Jasper Lake to LPSS PCI

  New Functionality:
   - Add support for Power Key to ROHM BD71828
   - Add support for Clocks to ROHM BD71828
   - Add support for GPIOs to Dialog DA9062
   - Add support for USB PD Notify to ChromiumOS EC
   - Allow callers to specify args when requesting regmap lookup; syscon

  Fix-ups:
   - Improve error handling and sanity checking; atmel-hlcdc, dln2
   - Device Tree support/documentation; bd71828, da9062, xylon,logicvc,
     ab8500, max14577, atmel-usart
   - Match devices using platform IDs; bd7xxxx
   - Refactor BD718x7 regulator component; bd718x7-regulator
   - Use standard interfaces/helpers; syscon, sm501
   - Trivial (whitespace, spelling, etc); ab8500-core, Kconfig
   - Remove unused code; db8500-prcmu, tqmx86
   - Wait until boot has finished before accessing registers;
     madera-core
   - Provide missing register value defaults; cs47l15-tables
   - Allow more time for hardware to reset; madera-core

  Bug Fixes:
   - Fix erroneous register values; rohm-bd70528
   - Fix register volatility; axp20x, rn5t618
   - Fix Kconfig dependencies; MFD_MAX77650
   - Fix incorrect compatible string; da9062-core
   - Fix syscon_regmap_lookup_by_phandle_args() stub; syscon"

* tag 'mfd-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (41 commits)
  mfd: syscon: Fix syscon_regmap_lookup_by_phandle_args() dummy
  mfd: wcd934x: Add support to wcd9340/wcd9341 codec
  mfd: syscon: Add arguments support for syscon reference
  mfd: rn5t618: Mark ADC control register volatile
  dt-bindings: atmel-usart: Add microchip,sam9x60-{usart, dbgu}
  dt-bindings: atmel-usart: Remove wildcard
  mfd: cros_ec: Add cros-usbpd-notify subdevice
  mfd: da9062: Fix watchdog compatible string
  mfd: madera: Allow more time for hardware reset
  mfd: cs47l15: Add missing register default
  mfd: madera: Wait for boot done before accessing any other registers
  mfd: Kconfig: Rename Samsung to lowercase
  mfd: tqmx86: remove set but not used variable 'i2c_ien'
  mfd: dbx500-prcmu: Drop DSI pll clock functions
  mfd: dbx500-prcmu: Drop set_display_clocks()
  mfd: max77650: Select REGMAP_IRQ in Kconfig
  mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
  mfd: ab8500: Fix ab8500-clk typo
  mfd: intel-lpss: Add Intel Jasper Lake PCI IDs
  dt-bindings: mfd: max14577: Add reference to max14040_battery.txt descriptions
  ...
 2020-02-03 14:51:57 +00:00
Linus Torvalds d0fa925031 Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux 
Pull Hyper-V updates from Sasha Levin:

 - Most of the commits here are work to enable host-initiated
   hibernation support by Dexuan Cui.

 - Fix for a warning shown when host sends non-aligned balloon requests
   by Tianyu Lan.

* tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  hv_utils: Add the support of hibernation
  hv_utils: Support host-initiated hibernation request
  hv_utils: Support host-initiated restart request
  Tools: hv: Reopen the devices if read() or write() returns errors
  video: hyperv: hyperv_fb: Use physical memory for fb on HyperV Gen 1 VMs.
  Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23)
  video: hyperv_fb: Fix hibernation for the deferred IO feature
  Input: hyperv-keyboard: Add the support of hibernation
  hv_balloon: Balloon up according to request page number
 2020-02-03 14:42:03 +00:00
Geert Uytterhoeven 5312f321a6 mfd: syscon: Fix syscon_regmap_lookup_by_phandle_args() dummy 
If CONFIG_MFD_SYSCON=n:

    include/linux/mfd/syscon.h:54:23: warning: ‘syscon_regmap_lookup_by_phandle_args’ defined but not used [-Wunused-function]

Fix this by adding the missing inline keyword.

Fixes: 6a24f567af ("mfd: syscon: Add arguments support for syscon reference")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2020-02-03 08:39:49 +00:00
Linus Torvalds 545ae66582 Merge tag 'leds-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds 
Pull LED updates from Pavel Machek:

 - New driver for TI TPS6105X

 - Add managed API to get a LED from a device driver

 - Misc fixes and updates

* tag 'leds-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (22 commits)
  leds: lm3692x: Disable chip on brightness 0
  leds: lm3692x: Split out lm3692x_leds_disable
  leds: lm3692x: Move lm3692x_init and rename to lm3692x_leds_enable
  leds: lm3692x: Make sure we don't exceed the maximum LED current
  dt: bindings: lm3692x: Add led-max-microamp property
  leds: lm3692x: Allow to configure over voltage protection
  dt: bindings: lm3692x: Add ti,ovp-microvolt property
  leds: populate the device's of_node
  leds: Add managed API to get a LED from a device driver
  leds: Add of_led_get() and led_put()
  leds: lm3532: add pointer to documentation and fix typo
  leds: lm3532: use extended registration so that LED can be used for backlight
  leds: lm3642: remove warnings for bad strtol, cleanup gotos
  leds: rb532: cleanup whitespace
  ledtrig-pattern: fix email address quoting in MODULE_AUTHOR()
  dt-bindings: mfd: update TI tps6105x chip bindings
  leds: tps6105x: add driver for MFD chip LED mode
  led: max77650: add of_match table
  leds: bd2802: Convert to use GPIO descriptors
  leds: pca963x: Fix open-drain initialization
  ...
 2020-02-02 11:48:46 -08:00
Linus Torvalds 368d060bb4 Merge tag 'kbuild-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild 
Pull Kbuild updates from Masahiro Yamada:

 - detect missing include guard in UAPI headers

 - do not create orphan built-in.a or obj-y objects

 - generate modules.builtin more simply, and drop tristate.conf

 - simplify built-in initramfs creation

 - make linux-headers deb package thinner

 - optimize the deb package build script

 - misc cleanups

* tag 'kbuild-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
  builddeb: split libc headers deployment out into a function
  builddeb: split kernel headers deployment out into a function
  builddeb: remove redundant make for ARCH=um
  builddeb: avoid invoking sub-shells where possible
  builddeb: remove redundant $objtree/
  builddeb: match temporary directory name to the package name
  builddeb: remove unneeded files in hdrobjfiles for headers package
  kbuild: use -S instead of -E for precise cc-option test in Kconfig
  builddeb: allow selection of .deb compressor
  kbuild: remove 'Building modules, stage 2.' log
  kbuild: remove *.tmp file when filechk fails
  kbuild: remove PYTHON2 variable
  modpost: assume STT_SPARC_REGISTER is defined
  gen_initramfs.sh: remove intermediate cpio_list on errors
  initramfs: refactor the initramfs build rules
  gen_initramfs.sh: always output cpio even without -o option
  initramfs: add default_cpio_list, and delete -d option support
  initramfs: generate dependency list and cpio at the same time
  initramfs: specify $(src)/gen_initramfs.sh as a prerequisite in Makefile
  initramfs: make initramfs compression choice non-optional
  ...
 2020-02-01 10:01:52 -08:00
Linus Torvalds acd77500aa Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random 
Pull random changes from Ted Ts'o:
 "Change /dev/random so that it uses the CRNG and only blocking if the
  CRNG hasn't initialized, instead of the old blocking pool. Also clean
  up archrandom.h, and some other miscellaneous cleanups"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (24 commits)
  s390x: Mark archrandom.h functions __must_check
  powerpc: Mark archrandom.h functions __must_check
  powerpc: Use bool in archrandom.h
  x86: Mark archrandom.h functions __must_check
  linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check
  linux/random.h: Use false with bool
  linux/random.h: Remove arch_has_random, arch_has_random_seed
  s390: Remove arch_has_random, arch_has_random_seed
  powerpc: Remove arch_has_random, arch_has_random_seed
  x86: Remove arch_has_random, arch_has_random_seed
  random: remove some dead code of poolinfo
  random: fix typo in add_timer_randomness()
  random: Add and use pr_fmt()
  random: convert to ENTROPY_BITS for better code readability
  random: remove unnecessary unlikely()
  random: remove kernel.random.read_wakeup_threshold
  random: delete code to pull data into pools
  random: remove the blocking pool
  random: make /dev/random be almost like /dev/urandom
  random: ignore GRND_RANDOM in getentropy(2)
  ...
 2020-02-01 09:48:37 -08:00
Linus Torvalds 26dca6dbd6 Merge tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci 
Pull PCI updates from Bjorn Helgaas:

 "Resource management:

   - Improve resource assignment for hot-added nested bridges, e.g.,
     Thunderbolt (Nicholas Johnson)

  Power management:

   - Optionally print config space of devices before suspend (Chen Yu)

   - Increase D3 delay for AMD Ryzen5/7 XHCI controllers (Daniel Drake)

  Virtualization:

   - Generalize DMA alias quirks (James Sewart)

   - Add DMA alias quirk for PLX PEX NTB (James Sewart)

   - Fix IOV memory leak (Navid Emamdoost)

  AER:

   - Log which device prevents error recovery (Yicong Yang)

  Peer-to-peer DMA:

   - Whitelist Intel SkyLake-E (Armen Baloyan)

  Broadcom iProc host bridge driver:

   - Apply PAXC quirk whether driver is built-in or module (Wei Liu)

  Broadcom STB host bridge driver:

   - Add Broadcom STB PCIe host controller driver (Jim Quinlan)

  Intel Gateway SoC host bridge driver:

   - Add driver for Intel Gateway SoC (Dilip Kota)

  Intel VMD host bridge driver:

   - Add support for DMA aliases on other buses (Jon Derrick)

   - Remove dma_map_ops overrides (Jon Derrick)

   - Remove now-unused X86_DEV_DMA_OPS (Christoph Hellwig)

  NVIDIA Tegra host bridge driver:

   - Fix Tegra30 afi_pex2_ctrl register offset (Marcel Ziswiler)

  Panasonic UniPhier host bridge driver:

   - Remove module code since driver can't be built as a module
     (Masahiro Yamada)

  Qualcomm host bridge driver:

   - Add support for SDM845 PCIe controller (Bjorn Andersson)

  TI Keystone host bridge driver:

   - Fix "num-viewport" DT property error handling (Kishon Vijay Abraham I)

   - Fix link training retries initiation (Yurii Monakov)

   - Fix outbound region mapping (Yurii Monakov)

  Misc:

   - Add Switchtec Gen4 support (Kelvin Cao)

   - Add Switchtec Intercomm Notify and Upstream Error Containment
     support (Logan Gunthorpe)

   - Use dma_set_mask_and_coherent() since Switchtec supports 64-bit
     addressing (Wesley Sheng)"

* tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (60 commits)
  PCI: Allow adjust_bridge_window() to shrink resource if necessary
  PCI: Set resource size directly in adjust_bridge_window()
  PCI: Rename extend_bridge_window() to adjust_bridge_window()
  PCI: Rename extend_bridge_window() parameter
  PCI: Consider alignment of hot-added bridges when assigning resources
  PCI: Remove local variable usage in pci_bus_distribute_available_resources()
  PCI: Pass size + alignment to pci_bus_distribute_available_resources()
  PCI: Rename variables
  PCI: vmd: Add two VMD Device IDs
  PCI: Remove unnecessary braces
  PCI: brcmstb: Add MSI support
  PCI: brcmstb: Add Broadcom STB PCIe host controller driver
  x86/PCI: Remove X86_DEV_DMA_OPS
  PCI: vmd: Remove dma_map_ops overrides
  iommu/vt-d: Remove VMD child device sanity check
  iommu/vt-d: Use pci_real_dma_dev() for mapping
  PCI: Introduce pci_real_dma_dev()
  x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
  x86/PCI: Add to_pci_sysdata() helper
  PCI/AER: Initialize aer_fifo
  ...
 2020-01-31 14:48:54 -08:00
Linus Torvalds 8fdd4019bc Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma 
Pull rdma updates from Jason Gunthorpe:
 "A very quiet cycle with few notable changes. Mostly the usual list of
  one or two patches to drivers changing something that isn't quite rc
  worthy. The subsystem seems to be seeing a larger number of rework and
  cleanup style patches right now, I feel that several vendors are
  prepping their drivers for new silicon.

  Summary:

   - Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4,
     rxe, i40iw

   - Larger series doing cleanup and rework for hns and hfi1.

   - Some general reworking of the CM code to make it a little more
     understandable

   - Unify the different code paths connected to the uverbs FD scheme

   - New UAPI ioctls conversions for get context and get async fd

   - Trace points for CQ and CM portions of the RDMA stack

   - mlx5 driver support for virtio-net formatted rings as RDMA raw
     ethernet QPs

   - verbs support for setting the PCI-E relaxed ordering bit on DMA
     traffic connected to a MR

   - A couple of bug fixes that came too late to make rc7"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (108 commits)
  RDMA/core: Make the entire API tree static
  RDMA/efa: Mask access flags with the correct optional range
  RDMA/cma: Fix unbalanced cm_id reference count during address resolve
  RDMA/umem: Fix ib_umem_find_best_pgsz()
  IB/mlx4: Fix leak in id_map_find_del
  IB/opa_vnic: Spelling correction of 'erorr' to 'error'
  IB/hfi1: Fix logical condition in msix_request_irq
  RDMA/cm: Remove CM message structs
  RDMA/cm: Use IBA functions for complex structure members
  RDMA/cm: Use IBA functions for simple structure members
  RDMA/cm: Use IBA functions for swapping get/set acessors
  RDMA/cm: Use IBA functions for simple get/set acessors
  RDMA/cm: Add SET/GET implementations to hide IBA wire format
  RDMA/cm: Add accessors for CM_REQ transport_type
  IB/mlx5: Return the administrative GUID if exists
  RDMA/core: Ensure that rdma_user_mmap_entry_remove() is a fence
  IB/mlx4: Fix memory leak in add_gid error flow
  IB/mlx5: Expose RoCE accelerator counters
  RDMA/mlx5: Set relaxed ordering when requested
  RDMA/core: Add the core support field to METHOD_GET_CONTEXT
  ...
 2020-01-31 14:40:36 -08:00
Linus Torvalds cf3c8f84d1 Merge tag 'pm-5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 
Pull more power manadement updates from Rafael Wysocki:
 "Prevent cpufreq from creating excessively large stack frames and fix
  the handling of devices deleted during system-wide resume in the PM
  core (Rafael Wysocki), revert a problematic commit affecting the
  cpupower utility and correct its man page (Thomas Renninger,
  Brahadambal Srinivasan), and improve the intel_pstate_tracer utility
  (Doug Smythies)"

* tag 'pm-5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  tools/power/x86/intel_pstate_tracer: change several graphs to autoscale y-axis
  tools/power/x86/intel_pstate_tracer: changes for python 3 compatibility
  Correction to manpage of cpupower
  cpufreq: Avoid creating excessively large stack frames
  PM: core: Fix handling of devices deleted during system-wide resume
  cpupower: Revert library ABI changes from commit ae2917093f
 2020-01-31 14:36:35 -08:00
Stephen Boyd db865ee447 Merge branches 'clk-imx', 'clk-ti', 'clk-xilinx', 'clk-nvidia', 'clk-qcom', 'clk-freescale' and 'clk-qoriq' into clk-next 
- Support for Xilinx Versal platform clks
 - Display clk controller on qcom sc7180
 - Video clk controller on qcom sc7180
 - Graphics clk controller on qcom sc7180
 - CPU PLLs for qcom msm8916
 - Fixes for clk controllers on qcom msm8998 SoCs
 - Move qcom msm8974 gfx3d clk to RPM control
 - Display port clk support on qcom sdm845 SoCs
 - Global clk controller on qcom ipq6018
 - Adjust composite clk to new way of describing clk parents
 - Add a driver for BCLK of Freescale SAI cores

* clk-imx: (32 commits)
  clk: imx: Add support for i.MX8MP clock driver
  dt-bindings: imx: Add clock binding doc for i.MX8MP
  clk: imx: gate4: Switch imx_clk_gate4_flags() to clk_hw based API
  clk: imx: imx8mq: Switch to clk_hw based API
  clk: imx: imx8mm: Switch to clk_hw based API
  clk: imx: imx8mn: Switch to clk_hw based API
  clk: imx: Remove __init for imx_obtain_fixed_clk_hw() API
  clk: imx: gate3: Switch to clk_hw based API
  clk: imx: add hw API imx_clk_hw_mux2_flags
  clk: imx: add imx_unregister_hw_clocks
  clk: imx: clk-composite-8m: Switch to clk_hw based API
  clk: imx: clk-pll14xx: Switch to clk_hw based API
  clk: imx7up: Rename the clks to hws
  clk: imx: Rename the imx_clk_divider_gate to imply it's clk_hw based
  clk: imx: Rename the imx_clk_pfdv2 to imply it's clk_hw based
  clk: imx: Rename the imx_clk_pllv4 to imply it's clk_hw based
  clk: imx: Rename sccg and frac pll register to suggest clk_hw
  clk: imx: imx7ulp composite: Rename to show is clk_hw based
  clk: imx: pllv2: Switch to clk_hw based API
  clk: imx: pllv1: Switch to clk_hw based API
  ...

* clk-ti:
  clk: ti: clkctrl: Fix hidden dependency to node name
  clk: ti: add clkctrl data dra7 sgx
  clk: ti: omap5: Add missing AESS clock
  clk: ti: dra7: fix parent for gmac_clkctrl
  clk: ti: dra7: add vpe clkctrl data
  clk: ti: dra7: add cam clkctrl data
  dt-bindings: clock: Move ti-dra7-atl.h to dt-bindings/clock

* clk-xilinx:
  clk: zynqmp: Add support for clock with CLK_DIVIDER_POWER_OF_TWO flag
  clk: zynqmp: Fix divider calculation
  clk: zynqmp: Add support for get max divider
  clk: zynqmp: Warn user if clock user are more than allowed
  clk: zynqmp: Extend driver for versal
  dt-bindings: clock: Add bindings for versal clock driver

* clk-nvidia:
  clk: tegra20/30: Explicitly set parent clock for Video Decoder
  clk: tegra20/30: Don't pre-initialize displays parent clock
  clk: tegra: divider: Check UART's divider enable-bit state on rate's recalculation
  clk: tegra: clk-dfll: Remove call to pm_runtime_irq_safe()
  clk: tegra: Mark fuse clock as critical

* clk-qcom: (35 commits)
  clk: qcom: rpmh: Sort OF match table
  dt-bindings: fix warnings in validation of qcom,gcc.yaml
  dt-binding: fix compilation error of the example in qcom,gcc.yaml
  clk: qcom: Add ipq6018 Global Clock Controller support
  clk: qcom: Add DT bindings for ipq6018 gcc clock controller
  clk: qcom: gcc-msm8996: Fix parent for CLKREF clocks
  clk: qcom: rpmh: Add IPA clock for SC7180
  clk: qcom: rpmh: skip undefined clocks when registering
  clk: qcom: Add video clock controller driver for SC7180
  dt-bindings: clock: Introduce SC7180 QCOM Video clock bindings
  dt-bindings: clock: Add YAML schemas for the QCOM VIDEOCC clock bindings
  clk: qcom: Add graphics clock controller driver for SC7180
  dt-bindings: clock: Introduce SC7180 QCOM Graphics clock bindings
  dt-bindings: clock: Add YAML schemas for the QCOM GPUCC clock bindings
  clk: qcom: apcs-msm8916: use clk_parent_data to specify the parent
  clk: qcom: Add display clock controller driver for SC7180
  dt-bindings: clock: Introduce QCOM sc7180 display clock bindings
  dt-bindings: clock: Add YAML schemas for the QCOM DISPCC clock bindings
  clk: qcom: clk-alpha-pll: Add support for Fabia PLL calibration
  clk: qcom: alpha-pll: Remove useless read from set rate
  ...

* clk-freescale:
  clk: fsl-sai: new driver
  dt-bindings: clock: document the fsl-sai driver
  clk: composite: add _register_composite_pdata() variants

* clk-qoriq:
  clk: qoriq: add ls1088a hwaccel clocks support
  clk: ls1028a: Add clock driver for Display output interface
  dt/bindings: clk: Add YAML schemas for LS1028A Display Clock bindings
 2020-01-31 13:14:26 -08:00
Stephen Boyd 6e7a9f0c4e Merge branches 'clk-debugfs-danger', 'clk-basic-hw', 'clk-renesas', 'clk-amlogic' and 'clk-allwinner' into clk-next 
- Support dangerous debugfs actions on clks with dead code
 - Convert gpio, fixed-factor, mux, gate, divider basic clks to hw based APIs

* clk-debugfs-danger:
  clk: Add support for setting clk_rate via debugfs

* clk-basic-hw:
  clk: divider: Add support for specifying parents via DT/pointers
  clk: gate: Add support for specifying parents via DT/pointers
  clk: mux: Add support for specifying parents via DT/pointers
  clk: asm9260: Use parent accuracy in fixed rate clk
  clk: fixed-rate: Document that accuracy isn't a rate
  clk: fixed-rate: Add clk flags for parent accuracy
  clk: fixed-rate: Add support for specifying parents via DT/pointers
  clk: fixed-rate: Document accuracy member
  clk: fixed-rate: Move to_clk_fixed_rate() to C file
  clk: fixed-rate: Remove clk_register_fixed_rate_with_accuracy()
  clk: fixed-rate: Convert to clk_hw based APIs
  clk: gpio: Use DT way of specifying parents

* clk-renesas:
  clk: renesas: Prepare for split of R-Car H3 config symbol
  dt-bindings: clock: renesas: cpg-mssr: Fix r8a774b1 typo
  clk: renesas: r7s9210: Add SPIBSC clock
  clk: renesas: rcar-gen3: Allow changing the RPC[D2] clocks
  clk: renesas: Remove use of ARCH_R8A7796
  clk: renesas: rcar-gen2: Change multipliers and dividers to u8

* clk-amlogic:
  clk: clarify that clk_set_rate() does updates from top to bottom
  clk: meson: meson8b: make the CCF use the glitch-free mali mux
  clk: meson: pll: Fix by 0 division in __pll_params_to_rate()
  clk: meson: g12a: fix missing uart2 in regmap table
  clk: meson: meson8b: use of_clk_hw_register to register the clocks
  clk: meson: meson8b: don't register the XTAL clock when provided via OF
  clk: meson: meson8b: change references to the XTAL clock to use [fw_]name
  clk: meson: meson8b: use clk_hw_set_parent in the CPU clock notifier
  clk: meson: add a driver for the Meson8/8b/8m2 DDR clock controller
  dt-bindings: clock: meson8b: add the clock inputs
  dt-bindings: clock: add the Amlogic Meson8 DDR clock controller binding

* clk-allwinner:
  clk: sunxi: a23/a33: Export the MIPI PLL
  clk: sunxi: a31: Export the MIPI PLL
  clk: sunxi-ng: a64: export CLK_CPUX clock for DVFS
  clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock
  clk: sunxi-ng: r40: Export MBUS clock
  clk: sunxi: use of_device_get_match_data
 2020-01-31 13:12:14 -08:00
Linus Torvalds 677b60dcb6 Merge tag 'iomap-5.6-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux 
Pull iomap fix from Darrick Wong:
 "A single patch fixing an off-by-one error when we're checking to see
  how far we're gotten into an EOF page"

* tag 'iomap-5.6-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  fs: Fix page_mkwrite off-by-one errors
 2020-01-31 12:58:12 -08:00
Linus Torvalds 7eec11d3a7 Merge branch 'akpm' (patches from Andrew) 
Pull updates from Andrew Morton:
 "Most of -mm and quite a number of other subsystems: hotfixes, scripts,
  ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.

  MM is fairly quiet this time.  Holidays, I assume"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  kcov: ignore fault-inject and stacktrace
  include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
  execve: warn if process starts with executable stack
  reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
  init/main.c: fix misleading "This architecture does not have kernel memory protection" message
  init/main.c: fix quoted value handling in unknown_bootoption
  init/main.c: remove unnecessary repair_env_string in do_initcall_level
  init/main.c: log arguments and environment passed to init
  fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
  fs/binfmt_elf.c: coredump: delete duplicated overflow check
  fs/binfmt_elf.c: coredump: allocate core ELF header on stack
  fs/binfmt_elf.c: make BAD_ADDR() unlikely
  fs/binfmt_elf.c: better codegen around current->mm
  fs/binfmt_elf.c: don't copy ELF header around
  fs/binfmt_elf.c: fix ->start_code calculation
  fs/binfmt_elf.c: smaller code generation around auxv vector fill
  lib/find_bit.c: uninline helper _find_next_bit()
  lib/find_bit.c: join _find_next_bit{_le}
  uapi: rename ext2_swab() to swab() and share globally in swab.h
  lib/scatterlist.c: adjust indentation in __sg_alloc_table
  ...
 2020-01-31 12:16:36 -08:00
Linus Torvalds ddaefe8947 Merge tag 'modules-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux 
Pull module updates from Jessica Yu:
 "Summary of modules changes for the 5.6 merge window:

   - Add "MS" (SHF_MERGE|SHF_STRINGS) section flags to __ksymtab_strings
     to indicate to the linker that it can perform string deduplication
     (i.e., duplicate strings are reduced to a single copy in the string
     table). This means any repeated namespace string would be merged to
     just one entry in __ksymtab_strings.

   - Various code cleanups and small fixes (fix small memleak in error
     path, improve moduleparam docs, silence rcu warnings, improve error
     logging)"

* tag 'modules-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module.h: Annotate mod_kallsyms with __rcu
  module: avoid setting info->name early in case we can fall back to info->mod->name
  modsign: print module name along with error message
  kernel/module: Fix memleak in module_add_modinfo_attrs()
  export.h: reduce __ksymtab_strings string duplication by using "MS" section flags
  moduleparam: fix kerneldoc
  modules: lockdep: Suppress suspicious RCU usage warning
 2020-01-31 11:42:13 -08:00
Erdem Aktas 264b0d2bee percpu: Separate decrypted varaibles anytime encryption can be enabled 
CONFIG_VIRTUALIZATION may not be enabled for memory encrypted guests.  If
disabled, decrypted per-CPU variables may end up sharing the same page
with variables that should be left encrypted.

Always separate per-CPU variables that should be decrypted into their own
page anytime memory encryption can be enabled in the guest rather than
rely on any other config option that may not be enabled.

Fixes: ac26963a11 ("percpu: Introduce DEFINE_PER_CPU_DECRYPTED")
Cc: stable@vger.kernel.org # 4.15+
Signed-off-by: Erdem Aktas <erdemaktas@google.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
 2020-01-31 11:15:59 -08:00
Andy Shevchenko 2b755626ca include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc() 
Use PHYS_PFN() macro in io_mapping_map_atomic_wc() instead of open coded
variant.

Link: http://lkml.kernel.org/r/20191209165624.56351-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:41 -08:00
Yury Norov d5767057c9 uapi: rename ext2_swab() to swab() and share globally in swab.h 
ext2_swab() is defined locally in lib/find_bit.c However it is not
specific to ext2, neither to bitmaps.

There are many potential users of it, so rename it to just swab() and
move to include/uapi/linux/swab.h

ABI guarantees that size of unsigned long corresponds to BITS_PER_LONG,
therefore drop unneeded cast.

Link: http://lkml.kernel.org/r/20200103202846.21616-1-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Cc: Allison Randal <allison@lohutok.net>
Cc: Joe Perches <joe@perches.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:40 -08:00
Mikhail Zaslonko 803521b149 lib/zlib: add zlib_deflate_dfltcc_enabled() function 
Add a new function to zlib.h checking if s390 Deflate-Conversion
facility is installed and enabled.

Link: http://lkml.kernel.org/r/20200103223334.20669-6-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Eduard Shishkin <edward6@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:40 -08:00
Akinobu Mita cdf309fb38 thermal: remove kelvin to/from Celsius conversion helpers from <linux/thermal.h> 
This removes the kelvin to/from Celsius conversion helper macros in
<linux/thermal.h> which were switched to the inline helper functions in
<linux/units.h>.

Link: http://lkml.kernel.org/r/1576386975-7941-9-git-send-email-akinobu.mita@gmail.com
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Sujith Thomas <sujith.thomas@intel.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Amit Kucheria <amit.kucheria@verdurent.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Luca Coelho <luciano.coelho@intel.com>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:40 -08:00
Akinobu Mita 23331e4893 include/linux/units.h: add helpers for kelvin to/from Celsius conversion 
Patch series "add header file for kelvin to/from Celsius conversion
helpers", v4.

There are several helper macros to convert kelvin to/from Celsius in
<linux/thermal.h> for thermal drivers.  These are useful for any other
drivers or subsystems, but it's odd to include <linux/thermal.h> just
for the helpers.

This adds a new <linux/units.h> that provides the equivalent inline
functions for any drivers or subsystems, and switches all the users of
conversion helpers in <linux/thermal.h> to use <linux/units.h> helpers.

This patch (of 12):

There are several helper macros to convert kelvin to/from Celsius in
<linux/thermal.h> for thermal drivers.  These are useful for any other
drivers or subsystems, but it's odd to include <linux/thermal.h> just
for the helpers.

This adds a new <linux/units.h> that provides the equivalent inline
functions for any drivers or subsystems.  It is intended to replace the
helpers in <linux/thermal.h>.

Link: http://lkml.kernel.org/r/1576386975-7941-2-git-send-email-akinobu.mita@gmail.com
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Sujith Thomas <sujith.thomas@intel.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Amit Kucheria <amit.kucheria@verdurent.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Luca Coelho <luciano.coelho@intel.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Hao Lee 0a3c577297 mm: fix comments related to node reclaim 
As zone reclaim has been replaced by node reclaim, this patch fixes
related comments.

Link: http://lkml.kernel.org/r/20191126141346.GA22665@haolee.github.io
Signed-off-by: Hao Lee <haolee.swjtu@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Anshuman Khandual 068964541d include/linux/memory.h: drop fields 'hw' and 'phys_callback' from struct memory_block 
memory_block structure elements 'hw' and 'phys_callback' are not getting
used.  This was originally added with commit 3947be1969 ("[PATCH]
memory hotplug: sysfs and add/remove functions") but never seem to have
been used.  Just drop them now.

Link: http://lkml.kernel.org/r/1576728650-13867-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Wei Yang ca023a92c8 include/linux/mm.h: remove dead code totalram_pages_set() 
totalram_pages_set() was introduced in commit ca79b0c211 ("mm: convert
totalram_pages and totalhigh_pages variables to atomic"), but no one
uses it.

Link: http://lkml.kernel.org/r/20191218005543.24146-1-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Yu Zhao 26b56e116a include/linux/mm.h: clean up obsolete check on space in page->flags 
The check was intended to make sure we don't overrun page flags.  But
it's obsolete because it doesn't include LAST_CPUPID_WIDTH nor
KASAN_TAG_WIDTH.

Just remove check since we already have it covered in
linux/page-flags-layout.h (near the end of the file).

Link: http://lkml.kernel.org/r/20191208183508.89177-1-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Qian Cai 4a55c0474a mm/hotplug: silence a lockdep splat with printk() 
It is not that hard to trigger lockdep splats by calling printk from
under zone->lock.  Most of them are false positives caused by lock
chains introduced early in the boot process and they do not cause any
real problems (although most of the early boot lock dependencies could
happen after boot as well).  There are some console drivers which do
allocate from the printk context as well and those should be fixed.  In
any case, false positives are not that trivial to workaround and it is
far from optimal to lose lockdep functionality for something that is a
non-issue.

So change has_unmovable_pages() so that it no longer calls dump_page()
itself - instead it returns a "struct page *" of the unmovable page back
to the caller so that in the case of a has_unmovable_pages() failure,
the caller can call dump_page() after releasing zone->lock.  Also, make
dump_page() is able to report a CMA page as well, so the reason string
from has_unmovable_pages() can be removed.

Even though has_unmovable_pages doesn't hold any reference to the
returned page this should be reasonably safe for the purpose of
reporting the page (dump_page) because it cannot be hotremoved in the
context of memory unplug.  The state of the page might change but that
is the case even with the existing code as zone->lock only plays role
for free pages.

While at it, remove a similar but unnecessary debug-only printk() as
well.  A sample of one of those lockdep splats is,

  WARNING: possible circular locking dependency detected
  ------------------------------------------------------
  test.sh/8653 is trying to acquire lock:
  ffffffff865a4460 (console_owner){-.-.}, at:
  console_unlock+0x207/0x750

  but task is already holding lock:
  ffff88883fff3c58 (&(&zone->lock)->rlock){-.-.}, at:
  __offline_isolated_pages+0x179/0x3e0

  which lock already depends on the new lock.

  the existing dependency chain (in reverse order) is:

  -> #3 (&(&zone->lock)->rlock){-.-.}:
         __lock_acquire+0x5b3/0xb40
         lock_acquire+0x126/0x280
         _raw_spin_lock+0x2f/0x40
         rmqueue_bulk.constprop.21+0xb6/0x1160
         get_page_from_freelist+0x898/0x22c0
         __alloc_pages_nodemask+0x2f3/0x1cd0
         alloc_pages_current+0x9c/0x110
         allocate_slab+0x4c6/0x19c0
         new_slab+0x46/0x70
         ___slab_alloc+0x58b/0x960
         __slab_alloc+0x43/0x70
         __kmalloc+0x3ad/0x4b0
         __tty_buffer_request_room+0x100/0x250
         tty_insert_flip_string_fixed_flag+0x67/0x110
         pty_write+0xa2/0xf0
         n_tty_write+0x36b/0x7b0
         tty_write+0x284/0x4c0
         __vfs_write+0x50/0xa0
         vfs_write+0x105/0x290
         redirected_tty_write+0x6a/0xc0
         do_iter_write+0x248/0x2a0
         vfs_writev+0x106/0x1e0
         do_writev+0xd4/0x180
         __x64_sys_writev+0x45/0x50
         do_syscall_64+0xcc/0x76c
         entry_SYSCALL_64_after_hwframe+0x49/0xbe

  -> #2 (&(&port->lock)->rlock){-.-.}:
         __lock_acquire+0x5b3/0xb40
         lock_acquire+0x126/0x280
         _raw_spin_lock_irqsave+0x3a/0x50
         tty_port_tty_get+0x20/0x60
         tty_port_default_wakeup+0xf/0x30
         tty_port_tty_wakeup+0x39/0x40
         uart_write_wakeup+0x2a/0x40
         serial8250_tx_chars+0x22e/0x440
         serial8250_handle_irq.part.8+0x14a/0x170
         serial8250_default_handle_irq+0x5c/0x90
         serial8250_interrupt+0xa6/0x130
         __handle_irq_event_percpu+0x78/0x4f0
         handle_irq_event_percpu+0x70/0x100
         handle_irq_event+0x5a/0x8b
         handle_edge_irq+0x117/0x370
         do_IRQ+0x9e/0x1e0
         ret_from_intr+0x0/0x2a
         cpuidle_enter_state+0x156/0x8e0
         cpuidle_enter+0x41/0x70
         call_cpuidle+0x5e/0x90
         do_idle+0x333/0x370
         cpu_startup_entry+0x1d/0x1f
         start_secondary+0x290/0x330
         secondary_startup_64+0xb6/0xc0

  -> #1 (&port_lock_key){-.-.}:
         __lock_acquire+0x5b3/0xb40
         lock_acquire+0x126/0x280
         _raw_spin_lock_irqsave+0x3a/0x50
         serial8250_console_write+0x3e4/0x450
         univ8250_console_write+0x4b/0x60
         console_unlock+0x501/0x750
         vprintk_emit+0x10d/0x340
         vprintk_default+0x1f/0x30
         vprintk_func+0x44/0xd4
         printk+0x9f/0xc5

  -> #0 (console_owner){-.-.}:
         check_prev_add+0x107/0xea0
         validate_chain+0x8fc/0x1200
         __lock_acquire+0x5b3/0xb40
         lock_acquire+0x126/0x280
         console_unlock+0x269/0x750
         vprintk_emit+0x10d/0x340
         vprintk_default+0x1f/0x30
         vprintk_func+0x44/0xd4
         printk+0x9f/0xc5
         __offline_isolated_pages.cold.52+0x2f/0x30a
         offline_isolated_pages_cb+0x17/0x30
         walk_system_ram_range+0xda/0x160
         __offline_pages+0x79c/0xa10
         offline_pages+0x11/0x20
         memory_subsys_offline+0x7e/0xc0
         device_offline+0xd5/0x110
         state_store+0xc6/0xe0
         dev_attr_store+0x3f/0x60
         sysfs_kf_write+0x89/0xb0
         kernfs_fop_write+0x188/0x240
         __vfs_write+0x50/0xa0
         vfs_write+0x105/0x290
         ksys_write+0xc6/0x160
         __x64_sys_write+0x43/0x50
         do_syscall_64+0xcc/0x76c
         entry_SYSCALL_64_after_hwframe+0x49/0xbe

  other info that might help us debug this:

  Chain exists of:
    console_owner --> &(&port->lock)->rlock --> &(&zone->lock)->rlock

   Possible unsafe locking scenario:

         CPU0                    CPU1
         ----                    ----
    lock(&(&zone->lock)->rlock);
                                 lock(&(&port->lock)->rlock);
                                 lock(&(&zone->lock)->rlock);
    lock(console_owner);

   *** DEADLOCK ***

  9 locks held by test.sh/8653:
   #0: ffff88839ba7d408 (sb_writers#4){.+.+}, at:
  vfs_write+0x25f/0x290
   #1: ffff888277618880 (&of->mutex){+.+.}, at:
  kernfs_fop_write+0x128/0x240
   #2: ffff8898131fc218 (kn->count#115){.+.+}, at:
  kernfs_fop_write+0x138/0x240
   #3: ffffffff86962a80 (device_hotplug_lock){+.+.}, at:
  lock_device_hotplug_sysfs+0x16/0x50
   #4: ffff8884374f4990 (&dev->mutex){....}, at:
  device_offline+0x70/0x110
   #5: ffffffff86515250 (cpu_hotplug_lock.rw_sem){++++}, at:
  __offline_pages+0xbf/0xa10
   #6: ffffffff867405f0 (mem_hotplug_lock.rw_sem){++++}, at:
  percpu_down_write+0x87/0x2f0
   #7: ffff88883fff3c58 (&(&zone->lock)->rlock){-.-.}, at:
  __offline_isolated_pages+0x179/0x3e0
   #8: ffffffff865a4920 (console_lock){+.+.}, at:
  vprintk_emit+0x100/0x340

  stack backtrace:
  Hardware name: HPE ProLiant DL560 Gen10/ProLiant DL560 Gen10,
  BIOS U34 05/21/2019
  Call Trace:
   dump_stack+0x86/0xca
   print_circular_bug.cold.31+0x243/0x26e
   check_noncircular+0x29e/0x2e0
   check_prev_add+0x107/0xea0
   validate_chain+0x8fc/0x1200
   __lock_acquire+0x5b3/0xb40
   lock_acquire+0x126/0x280
   console_unlock+0x269/0x750
   vprintk_emit+0x10d/0x340
   vprintk_default+0x1f/0x30
   vprintk_func+0x44/0xd4
   printk+0x9f/0xc5
   __offline_isolated_pages.cold.52+0x2f/0x30a
   offline_isolated_pages_cb+0x17/0x30
   walk_system_ram_range+0xda/0x160
   __offline_pages+0x79c/0xa10
   offline_pages+0x11/0x20
   memory_subsys_offline+0x7e/0xc0
   device_offline+0xd5/0x110
   state_store+0xc6/0xe0
   dev_attr_store+0x3f/0x60
   sysfs_kf_write+0x89/0xb0
   kernfs_fop_write+0x188/0x240
   __vfs_write+0x50/0xa0
   vfs_write+0x105/0x290
   ksys_write+0xc6/0x160
   __x64_sys_write+0x43/0x50
   do_syscall_64+0xcc/0x76c
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Link: http://lkml.kernel.org/r/20200117181200.20299-1-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
David Hildenbrand bd5c2344f9 mm/memory_hotplug: pass in nid to online_pages() 
Patch series "mm/memory_hotplug: pass in nid to online_pages()".

Simplify onlining code and get rid of find_memory_block().  Pass in the
nid from the memory block we are trying to online directly, instead of
manually looking it up.

This patch (of 2):

No need to lookup the memory block, we can directly pass in the nid.

Link: http://lkml.kernel.org/r/20200113113354.6341-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:39 -08:00
Anshuman Khandual 02634a44b8 mm/memblock: define memblock_physmem_add() 
On the s390 platform memblock.physmem array is being built by directly
calling into memblock_add_range() which is a low level function not
intended to be used outside of memblock.  Hence lets conditionally add
helper functions for physmem array when HAVE_MEMBLOCK_PHYS_MAP is
enabled.  Also use MAX_NUMNODES instead of 0 as node ID similar to
memblock_add() and memblock_reserve().  Make memblock_add_range() a
static function as it is no longer getting used outside of memblock.

Link: http://lkml.kernel.org/r/1578283835-21969-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Collin Walling <walling@linux.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:38 -08:00
David Hildenbrand fe4c86c916 mm: remove "count" parameter from has_unmovable_pages() 
Now that the memory isolate notifier is gone, the parameter is always 0.
Drop it and cleanup has_unmovable_pages().

Link: http://lkml.kernel.org/r/20191114131911.11783-3-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Wei Yang <richardw.yang@linux.intel.com>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Arun KS <arunks@codeaurora.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:38 -08:00
David Hildenbrand 3f9903b9ca mm: remove the memory isolate notifier 
Luckily, we have no users left, so we can get rid of it.  Cleanup
set_migratetype_isolate() a little bit.

Link: http://lkml.kernel.org/r/20191114131911.11783-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Qian Cai <cai@lca.pw>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:38 -08:00
John Hubbard f1f6a7dd9b mm, tree-wide: rename put_user_page*() to unpin_user_page*() 
In order to provide a clearer, more symmetric API for pinning and
unpinning DMA pages.  This way, pin_user_pages*() calls match up with
unpin_user_pages*() calls, and the API is a lot closer to being
self-explanatory.

Link: http://lkml.kernel.org/r/20200107224558.2362728-23-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:38 -08:00
John Hubbard eddb1c228f mm/gup: introduce pin_user_pages*() and FOLL_PIN 
Introduce pin_user_pages*() variations of get_user_pages*() calls, and
also pin_longterm_pages*() variations.

For now, these are placeholder calls, until the various call sites are
converted to use the correct get_user_pages*() or pin_user_pages*() API.

These variants will eventually all set FOLL_PIN, which is also
introduced, and thoroughly documented.

    pin_user_pages()
    pin_user_pages_remote()
    pin_user_pages_fast()

All pages that are pinned via the above calls, must be unpinned via
put_user_page().

The underlying rules are:

* FOLL_PIN is a gup-internal flag, so the call sites should not directly
  set it.  That behavior is enforced with assertions.

* Call sites that want to indicate that they are going to do DirectIO
  ("DIO") or something with similar characteristics, should call a
  get_user_pages()-like wrapper call that sets FOLL_PIN.  These wrappers
  will:

    * Start with "pin_user_pages" instead of "get_user_pages".  That
      makes it easy to find and audit the call sites.

    * Set FOLL_PIN

* For pages that are received via FOLL_PIN, those pages must be returned
  via put_user_page().

Thanks to Jan Kara and Vlastimil Babka for explaining the 4 cases in
this documentation.  (I've reworded it and expanded upon it.)

Link: http://lkml.kernel.org/r/20200107224558.2362728-12-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>		[Documentation]
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:37 -08:00
John Hubbard 07d8026995 mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages 
An upcoming patch changes and complicates the refcounting and especially
the "put page" aspects of it.  In order to keep everything clean,
refactor the devmap page release routines:

* Rename put_devmap_managed_page() to page_is_devmap_managed(), and
  limit the functionality to "read only": return a bool, with no side
  effects.

* Add a new routine, put_devmap_managed_page(), to handle decrementing
  the refcount for ZONE_DEVICE pages.

* Change callers (just release_pages() and put_page()) to check
  page_is_devmap_managed() before calling the new
  put_devmap_managed_page() routine.  This is a performance point:
  put_page() is a hot path, so we need to avoid non- inline function calls
  where possible.

* Rename __put_devmap_managed_page() to free_devmap_managed_page(), and
  limit the functionality to unconditionally freeing a devmap page.

This is originally based on a separate patch by Ira Weiny, which applied
to an early version of the put_user_page() experiments.  Since then,
Jérôme Glisse suggested the refactoring described above.

Link: http://lkml.kernel.org/r/20200107224558.2362728-5-jhubbard@nvidia.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Suggested-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:37 -08:00
Ira Weiny ddf8f376d1 mm/filemap.c: clean up filemap_write_and_wait() 
At some point filemap_write_and_wait() and
filemap_write_and_wait_range() got the exact same implementation with
the exception of the range being specified in *_range()

Similar to other functions in fs.h which call *_range(..., 0,
LLONG_MAX), change filemap_write_and_wait() to be a static inline which
calls filemap_write_and_wait_range()

Link: http://lkml.kernel.org/r/20191129160713.30892-1-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:37 -08:00
Andy Shevchenko dd3e7cba16 ocfs2/dlm: move BITS_TO_BYTES() to bitops.h for wider use 
There are users already and will be more of BITS_TO_BYTES() macro.  Move
it to bitops.h for wider use.

In the case of ocfs2 the replacement is identical.

As for bnx2x, there are two places where floor version is used.  In the
first case to calculate the amount of structures that can fit one memory
page.  In this case obviously the ceiling variant is correct and
original code might have a potential bug, if amount of bits % 8 is not
0.  In the second case the macro is used to calculate bytes transmitted
in one microsecond.  This will work for all speeds which is multiply of
1Gbps without any change, for the rest new code will give ceiling value,
for instance 100Mbps will give 13 bytes, while old code gives 12 bytes
and the arithmetically correct one is 12.5 bytes.  Further the value is
used to setup timer threshold which in any case has its own margins due
to certain resolution.  I don't see here an issue with slightly shifting
thresholds for low speed connections, the card is supposed to utilize
highest available rate, which is usually 10Gbps.

Link: http://lkml.kernel.org/r/20200108121316.22411-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:36 -08:00
Theodore Ts'o 68f23b8906 memcg: fix a crash in wb_workfn when a device disappears 
Without memcg, there is a one-to-one mapping between the bdi and
bdi_writeback structures.  In this world, things are fairly
straightforward; the first thing bdi_unregister() does is to shutdown
the bdi_writeback structure (or wb), and part of that writeback ensures
that no other work queued against the wb, and that the wb is fully
drained.

With memcg, however, there is a one-to-many relationship between the bdi
and bdi_writeback structures; that is, there are multiple wb objects
which can all point to a single bdi.  There is a refcount which prevents
the bdi object from being released (and hence, unregistered).  So in
theory, the bdi_unregister() *should* only get called once its refcount
goes to zero (bdi_put will drop the refcount, and when it is zero,
release_bdi gets called, which calls bdi_unregister).

Unfortunately, del_gendisk() in block/gen_hd.c never got the memo about
the Brave New memcg World, and calls bdi_unregister directly.  It does
this without informing the file system, or the memcg code, or anything
else.  This causes the root wb associated with the bdi to be
unregistered, but none of the memcg-specific wb's are shutdown.  So when
one of these wb's are woken up to do delayed work, they try to
dereference their wb->bdi->dev to fetch the device name, but
unfortunately bdi->dev is now NULL, thanks to the bdi_unregister()
called by del_gendisk().  As a result, *boom*.

Fortunately, it looks like the rest of the writeback path is perfectly
happy with bdi->dev and bdi->owner being NULL, so the simplest fix is to
create a bdi_dev_name() function which can handle bdi->dev being NULL.
This also allows us to bulletproof the writeback tracepoints to prevent
them from dereferencing a NULL pointer and crashing the kernel if one is
tracing with memcg's enabled, and an iSCSI device dies or a USB storage
stick is pulled.

The most common way of triggering this will be hotremoval of a device
while writeback with memcg enabled is going on.  It was triggering
several times a day in a heavily loaded production environment.

Google Bug Id: 145475544

Link: https://lore.kernel.org/r/20191227194829.150110-1-tytso@mit.edu
Link: http://lkml.kernel.org/r/20191228005211.163952-1-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Chris Mason <clm@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2020-01-31 10:30:36 -08:00
Douglas Anderson c67c10a67f kdb: kdb_current_regs should be private 
As of the patch ("MIPS: kdb: Remove old workaround for backtracing on
other CPUs") there is no reason for kdb_current_regs to be in the
public "kdb.h".  Let's move it next to kdb_current_task.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20191109111623.2.Iadbfb484e90b557cc4b5ac9890bfca732cd99d77@changeid
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
 2020-01-31 17:33:54 +00:00
Linus Torvalds e813e65038 Merge tag 'kvm-5.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 
Pull KVM updates from Paolo Bonzini:
 "This is the first batch of KVM changes.

  ARM:
   - cleanups and corner case fixes.

  PPC:
   - Bugfixes

  x86:
   - Support for mapping DAX areas with large nested page table entries.

   - Cleanups and bugfixes here too. A particularly important one is a
     fix for FPU load when the thread has TIF_NEED_FPU_LOAD. There is
     also a race condition which could be used in guest userspace to
     exploit the guest kernel, for which the embargo expired today.

   - Fast path for IPI delivery vmexits, shaving about 200 clock cycles
     from IPI latency.

   - Protect against "Spectre-v1/L1TF" (bring data in the cache via
     speculative out of bound accesses, use L1TF on the sibling
     hyperthread to read it), which unfortunately is an even bigger
     whack-a-mole game than SpectreV1.

  Sean continues his mission to rewrite KVM. In addition to a sizable
  number of x86 patches, this time he contributed a pretty large
  refactoring of vCPU creation that affects all architectures but should
  not have any visible effect.

  s390 will come next week together with some more x86 patches"

* tag 'kvm-5.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
  x86/KVM: Clean up host's steal time structure
  x86/KVM: Make sure KVM_VCPU_FLUSH_TLB flag is not missed
  x86/kvm: Cache gfn to pfn translation
  x86/kvm: Introduce kvm_(un)map_gfn()
  x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit
  KVM: PPC: Book3S PR: Fix -Werror=return-type build failure
  KVM: PPC: Book3S HV: Release lock on page-out failure path
  KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer
  KVM: arm64: pmu: Only handle supported event counters
  KVM: arm64: pmu: Fix chained SW_INCR counters
  KVM: arm64: pmu: Don't mark a counter as chained if the odd one is disabled
  KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset
  KVM: x86: Use a typedef for fastop functions
  KVM: X86: Add 'else' to unify fastop and execute call path
  KVM: x86: inline memslot_valid_for_gpte
  KVM: x86/mmu: Use huge pages for DAX-backed files
  KVM: x86/mmu: Remove lpage_is_disallowed() check from set_spte()
  KVM: x86/mmu: Fold max_mapping_level() into kvm_mmu_hugepage_adjust()
  KVM: x86/mmu: Zap any compound page when collapsing sptes
  KVM: x86/mmu: Remove obsolete gfn restoration in FNAME(fetch)
  ...
 2020-01-31 09:30:41 -08:00
Rafael J. Wysocki 82b2c6ffd3 Merge branches 'pm-cpufreq' and 'pm-core' 
* pm-cpufreq:
  cpufreq: Avoid creating excessively large stack frames

* pm-core:
  PM: core: Fix handling of devices deleted during system-wide resume
 2020-01-31 10:28:23 +01:00
Linus Torvalds 35c222fd32 Merge tag 'mtd/for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux 
Pull MTD updates from Miquel Raynal:
 "MTD core
   - block2mtd: page index should use pgoff_t
   - maps: physmap: minimal Runtime PM support
   - maps: pcmciamtd: avoid possible sleep-in-atomic-context bugs
   - concat: Fix a comment referring to an unknown symbol

  Raw NAND:
   - Macronix: Use match_string() helper
   - Atmel: switch to using devm_fwnode_gpiod_get()
   - Denali: rework the SKIP_BYTES feature and add reset controlling
   - Brcmnand: set appropriate DMA mask
   - Cadence: add unspecified HAS_IOMEM dependency
   - Various cleanup.

  Onenand:
   - Rename Samsung and Omap2 drivers to avoid possible build warnings
   - Enable compile testing
   - Various build issues
   - Kconfig cleanup

  SPI-NAND:
   - Support for Toshiba TC58CVG2S0HRAIJ

  SPI-NOR:
   - Add support for TB selection using SR bit 6,
   - Add support for few flashes"

* tag 'mtd/for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (41 commits)
  mtd: concat: Fix a comment referring to an unknown symbol
  mtd: rawnand: add unspecified HAS_IOMEM dependency
  mtd: block2mtd: page index should use pgoff_t
  mtd: maps: physmap: Add minimal Runtime PM support
  mtd: maps: pcmciamtd: fix possible sleep-in-atomic-context bugs in pcmciamtd_set_vpp()
  mtd: onenand: Rename omap2 driver to avoid a build warning
  mtd: onenand: Use a better name for samsung driver
  mtd: rawnand: atmel: switch to using devm_fwnode_gpiod_get()
  mtd: spinand: add support for Toshiba TC58CVG2S0HRAIJ
  mtd: rawnand: macronix: Use match_string() helper to simplify the code
  mtd: sharpslpart: Fix unsigned comparison to zero
  mtd: onenand: Enable compile testing of OMAP and Samsung drivers
  mtd: onenand: samsung: Fix printing format for size_t on 64-bit
  mtd: onenand: samsung: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit
  mtd: rawnand: denali: remove hard-coded DENALI_DEFAULT_OOB_SKIP_BYTES
  mtd: rawnand: denali_dt: add reset controlling
  dt-bindings: mtd: denali_dt: document reset property
  mtd: rawnand: denali_dt: Add support for configuring SPARE_AREA_SKIP_BYTES
  mtd: rawnand: denali_dt: error out if platform has no associated data
  mtd: rawnand: brcmnand: Set appropriate DMA mask
  ...
 2020-01-30 15:46:02 -08:00
Linus Torvalds 6e135baed8 Merge tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs 
Pull f2fs updates from Jaegeuk Kim:
 "In this series, we've implemented transparent compression
  experimentally. It supports LZO and LZ4, but will add more later as we
  investigate in the field more.

  At this point, the feature doesn't expose compressed space to user
  directly in order to guarantee potential data updates later to the
  space. Instead, the main goal is to reduce data writes to flash disk
  as much as possible, resulting in extending disk life time as well as
  relaxing IO congestion.

  Alternatively, we're also considering to add ioctl() to reclaim
  compressed space and show it to user after putting the immutable bit.

  Enhancements:
   - add compression support
   - avoid unnecessary locks in quota ops
   - harden power-cut scenario for zoned block devices
   - use private bio_set to avoid IO congestion
   - replace GC mutex with rwsem to serialize callers

  Bug fixes:
   - fix dentry consistency and memory corruption in rename()'s error case
   - fix wrong swap extent reports
   - fix casefolding bugs
   - change lock coverage to avoid deadlock
   - avoid GFP_KERNEL under f2fs_lock_op

  And, we've cleaned up sysfs entries to prepare no debugfs"

* tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (31 commits)
  f2fs: fix race conditions in ->d_compare() and ->d_hash()
  f2fs: fix dcache lookup of !casefolded directories
  f2fs: Add f2fs stats to sysfs
  f2fs: delete duplicate information on sysfs nodes
  f2fs: change to use rwsem for gc_mutex
  f2fs: update f2fs document regarding to fsync_mode
  f2fs: add a way to turn off ipu bio cache
  f2fs: code cleanup for f2fs_statfs_project()
  f2fs: fix miscounted block limit in f2fs_statfs_project()
  f2fs: show the CP_PAUSE reason in checkpoint traces
  f2fs: fix deadlock allocating bio_post_read_ctx from mempool
  f2fs: remove unneeded check for error allocating bio_post_read_ctx
  f2fs: convert inline_dir early before starting rename
  f2fs: fix memleak of kobject
  f2fs: fix to add swap extent correctly
  f2fs: run fsck when getting bad inode during GC
  f2fs: support data compression
  f2fs: free sysfs kobject
  f2fs: declare nested quota_sem and remove unnecessary sems
  f2fs: don't put new_page twice in f2fs_rename
  ...
 2020-01-30 15:39:24 -08:00
Linus Torvalds e5da4c933c Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 
Pull ext4 updates from Ted Ts'o:
 "This merge window, we've added some performance improvements in how we
  handle inode locking in the read/write paths, and improving the
  performance of Direct I/O overwrites.

  We also now record the error code which caused the first and most
  recent ext4_error() report in the superblock, to make it easier to
  root cause problems in production systems.

  There are also many of the usual cleanups and miscellaneous bug fixes"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (49 commits)
  jbd2: clean __jbd2_journal_abort_hard() and __journal_abort_soft()
  jbd2: make sure ESHUTDOWN to be recorded in the journal superblock
  ext4, jbd2: ensure panic when aborting with zero errno
  jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
  jbd2_seq_info_next should increase position index
  jbd2: remove pointless assertion in __journal_remove_journal_head
  ext4,jbd2: fix comment and code style
  jbd2: delete the duplicated words in the comments
  ext4: fix extent_status trace points
  ext4: fix symbolic enum printing in trace output
  ext4: choose hardlimit when softlimit is larger than hardlimit in ext4_statfs_project()
  ext4: fix race conditions in ->d_compare() and ->d_hash()
  ext4: make dioread_nolock the default
  ext4: fix extent_status fragmentation for plain files
  jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
  ext4: drop ext4_kvmalloc()
  ext4: Add EXT4_IOC_FSGETXATTR/EXT4_IOC_FSSETXATTR to compat_ioctl
  ext4: remove unused macro MPAGE_DA_EXTENT_TAIL
  ext4: add missing braces in ext4_ext_drop_refs()
  ext4: fix some nonstandard indentation in extents.c
  ...
 2020-01-30 15:17:05 -08:00
Paolo Bonzini 4cbc418a44 Merge branch 'cve-2019-3016' into kvm-next-5.6 
From Boris Ostrovsky:

The KVM hypervisor may provide a guest with ability to defer remote TLB
flush when the remote VCPU is not running. When this feature is used,
the TLB flush will happen only when the remote VPCU is scheduled to run
again. This will avoid unnecessary (and expensive) IPIs.

Under certain circumstances, when a guest initiates such deferred action,
the hypervisor may miss the request. It is also possible that the guest
may mistakenly assume that it has already marked remote VCPU as needing
a flush when in fact that request had already been processed by the
hypervisor. In both cases this will result in an invalid translation
being present in a vCPU, potentially allowing accesses to memory locations
in that guest's address space that should not be accessible.

Note that only intra-guest memory is vulnerable.

The five patches address both of these problems:
1. The first patch makes sure the hypervisor doesn't accidentally clear
a guest's remote flush request
2. The rest of the patches prevent the race between hypervisor
acknowledging a remote flush request and guest issuing a new one.

Conflicts:
	arch/x86/kvm/x86.c [move from kvm_arch_vcpu_free to kvm_arch_vcpu_destroy]
 2020-01-30 18:47:59 +01:00
Boris Ostrovsky 917248144d x86/kvm: Cache gfn to pfn translation 
__kvm_map_gfn()'s call to gfn_to_pfn_memslot() is
* relatively expensive
* in certain cases (such as when done from atomic context) cannot be called

Stashing gfn-to-pfn mapping should help with both cases.

This is part of CVE-2019-3016.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2020-01-30 18:45:55 +01:00
Boris Ostrovsky 1eff70a9ab x86/kvm: Introduce kvm_(un)map_gfn() 
kvm_vcpu_(un)map operates on gfns from any current address space.
In certain cases we want to make sure we are not mapping SMRAM
and for that we can use kvm_(un)map_gfn() that we are introducing
in this patch.

This is part of CVE-2019-3016.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2020-01-30 18:45:54 +01:00
Linus Torvalds 9f68e3655a Merge tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm 
Pull drm updates from Davbe Airlie:
 "This is the main pull request for graphics for 5.6. Usual selection of
  changes all over.

  I've got one outstanding vmwgfx pull that touches mm so kept it
  separate until after all of this lands. I'll try and get it to you
  soon after this, but it might be early next week (nothing wrong with
  code, just my schedule is messy)

  This also hits a lot of fbdev drivers with some cleanups.

  Other notables:
   - vulkan timeline semaphore support added to syncobjs
   - nouveau turing secureboot/graphics support
   - Displayport MST display stream compression support

  Detailed summary:

  uapi:
   - dma-buf heaps added (and fixed)
   - command line add support for panel oreientation
   - command line allow overriding penguin count

  drm:
   - mipi dsi definition updates
   - lockdep annotations for dma_resv
   - remove dma-buf kmap/kunmap support
   - constify fb_ops in all fbdev drivers
   - MST fix for daisy chained hotplug-
   - CTA-861-G modes with VIC >= 193 added
   - fix drm_panel_of_backlight export
   - LVDS decoder support
   - more device based logging support
   - scanline alighment for dumb buffers
   - MST DSC helpers

  scheduler:
   - documentation fixes
   - job distribution improvements

  panel:
   - Logic PD type 28 panel support
   - Jimax8729d MIPI-DSI
   - igenic JZ4770
   - generic DSI devicetree bindings
   - sony acx424AKP panel
   - Leadtek LTK500HD1829
   - xinpeng XPP055C272
   - AUO B116XAK01
   - GiantPlus GPM940B0
   - BOE NV140FHM-N49
   - Satoz SAT050AT40H12R2
   - Sharp LS020B1DD01D panels.

  ttm:
   - use blocking WW lock

  i915:
   - hw/uapi state separation
   - Lock annotation improvements
   - selftest improvements
   - ICL/TGL DSI VDSC support
   - VBT parsing improvments
   - Display refactoring
   - DSI updates + fixes
   - HDCP 2.2 for CFL
   - CML PCI ID fixes
   - GLK+ fbc fix
   - PSR fixes
   - GEN/GT refactor improvments
   - DP MST fixes
   - switch context id alloc to xarray
   - workaround updates
   - LMEM debugfs support
   - tiled monitor fixes
   - ICL+ clock gating programming removed
   - DP MST disable sequence fixed
   - LMEM discontiguous object maps
   - prefaulting for discontiguous objects
   - use LMEM for dumb buffers if possible
   - add LMEM mmap support

  amdgpu:
   - enable sync object timelines for vulkan
   - MST atomic routines
   - enable MST DSC support
   - add DMCUB display microengine support
   - DC OEM i2c support
   - Renoir DC fixes
   - Initial HDCP 2.x support
   - BACO support for Arcturus
   - Use BACO for runtime PM power save
   - gfxoff on navi10
   - gfx10 golden updates and fixes
   - DCN support on POWER
   - GFXOFF for raven1 refresh
   - MM engine idle handlers cleanup
   - 10bpc EDP panel fixes
   - renoir watermark fixes
   - SR-IOV fixes
   - Arcturus VCN fixes
   - GDDR6 training fixes
   - freesync fixes
   - Pollock support

  amdkfd:
   - unify more codepath with amdgpu
   - use KIQ to setup HIQ rather than MMIO

  radeon:
   - fix vma fault handler race
   - PPC DMA fix
   - register check fixes for r100/r200

  nouveau:
   - mmap_sem vs dma_resv fix
   - rewrite the ACR secure boot code for Turing
   - TU10x graphics engine support (TU11x pending)
   - Page kind mapping for turing
   - 10-bit LUT support
   - GP10B Tegra fixes
   - HD audio regression fix

  hisilicon/hibmc:
   - use generic fbdev code and helpers

  rockchip:
   - dsi/px30 support

  virtio:
   - fb damage support
   - static some functions

  vc4:
   - use dma_resv lock wrappers

  msm:
   - use dma_resv lock wrappers
   - sc7180 display + DSI support
   - a618 support
   - UBWC support improvements

  vmwgfx:
   - updates + new logging uapi

  exynos:
   - enable/disable callback cleanups

  etnaviv:
   - use dma_resv lock wrappers

  atmel-hlcdc:
   - clock fixes

  mediatek:
   - cmdq support
   - non-smooth cursor fixes
   - ctm property support

  sun4i:
   - suspend support
   - A64 mipi dsi support

  rcar-du:
   - Color management module support
   - LVDS encoder dual-link support
   - R8A77980 support

  analogic:
   - add support for an6345

  ast:
   - atomic modeset support
   - primary plane garbage fix

  arcgpu:
   - fixes for fourcc handling

  tegra:
   - minor fixes and improvments

  mcde:
   - vblank support

  meson:
   - OSD1 plane AFBC commit

  gma500:
   - add pageflip support
   - reomve global drm_dev

  komeda:
   - tweak debugfs output
   - d32 support
   - runtime PM suppotr

  udl:
   - use generic shmem helpers
   - cleanup and fixes"

* tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm: (1998 commits)
  drm/nouveau/fb/gp102-: allow module to load even when scrubber binary is missing
  drm/nouveau/acr: return error when registering LSF if ACR not supported
  drm/nouveau/disp/gv100-: not all channel types support reporting error codes
  drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
  drm/nouveau: support synchronous pushbuf submission
  drm/nouveau: signal pending fences when channel has been killed
  drm/nouveau: reject attempts to submit to dead channels
  drm/nouveau: zero vma pointer even if we only unreference it rather than free
  drm/nouveau: Add HD-audio component notifier support
  drm/nouveau: fix build error without CONFIG_IOMMU_API
  drm/nouveau/kms/nv04: remove set but not used variable 'width'
  drm/nouveau/kms/nv50: remove set but not unused variable 'nv_connector'
  drm/nouveau/mmu: fix comptag memory leak
  drm/nouveau/gr/gp10b: Use gp100_grctx and gp100_gr_zbc
  drm/nouveau/pmu/gm20b,gp10b: Fix Falcon bootstrapping
  drm/exynos: Rename Exynos to lowercase
  drm/exynos: change callback names
  drm/mst: Don't do atomic checks over disabled managers
  drm/amdgpu: add the lost mutex_init back
  drm/amd/display: skip opp blank or unblank if test pattern enabled
  ...
 2020-01-30 08:04:01 -08:00