Граф коммитов

48486 Коммитов

Автор SHA1 Сообщение Дата
Alexey Budankov 1dd88c195d doc/admin-guide: Document creation of CAP_PERFMON privileged shell
Document steps to create CAP_PERFMON privileged shell to unblock Perf
tool usage in cases when capabilities can't be assigned to an executable
due to limitations of used file system.

Suggested-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-man@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Link: http://lore.kernel.org/lkml/0abda956-de6c-95b1-61e8-49e146501079@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-11-04 09:42:40 -03:00
Alexey Budankov 4cb3fb1cd9 doc/admin-guide: Note credentials consolidation under CAP_PERFMON
Add note that starting from Linux v5.9 CAP_PERFMON Linux capability is
enough to conduct performance monitoring and observability using
perf_events API.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-man@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Link: http://lore.kernel.org/lkml/2b1a92a1-84ce-5c70-837d-8ffe96849588@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-11-04 09:42:40 -03:00
Linus Torvalds e6b0bd61a7 This pull contains a series of warning fixes from Mauro; once applied, the
number of warnings from the once-noisy docs build process is nearly zero.
 Getting to this point has required a lot of work; once there, hopefully we
 can keep things that way.
 
 I have packaged this as a separate pull because it does a fair amount of
 reaching outside of Documentation/.  The changes are all in comments and in
 code placement.  It's all been in linux-next since last week.
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Merge tag 'docs-5.10-warnings' of git://git.lwn.net/linux

Pull documentation build warning fixes from Jonathan Corbet:
 "This contains a series of warning fixes from Mauro; once applied, the
  number of warnings from the once-noisy docs build process is nearly
  zero.

  Getting to this point has required a lot of work; once there,
  hopefully we can keep things that way.

  I have packaged this as a separate pull because it does a fair amount
  of reaching outside of Documentation/. The changes are all in comments
  and in code placement. It's all been in linux-next since last week"

* tag 'docs-5.10-warnings' of git://git.lwn.net/linux: (24 commits)
  docs: SafeSetID: fix a warning
  amdgpu: fix a few kernel-doc markup issues
  selftests: kselftest_harness.h: fix kernel-doc markups
  drm: amdgpu_dm: fix a typo
  gpu: docs: amdgpu.rst: get rid of wrong kernel-doc markups
  drm: amdgpu: kernel-doc: update some adev parameters
  docs: fs: api-summary.rst: get rid of kernel-doc include
  IB/srpt: docs: add a description for cq_size member
  locking/refcount: move kernel-doc markups to the proper place
  docs: lockdep-design: fix some warning issues
  MAINTAINERS: fix broken doc refs due to yaml conversion
  ice: docs fix a devlink info that broke a table
  crypto: sun8x-ce*: update entries to its documentation
  net: phy: remove kernel-doc duplication
  mm: pagemap.h: fix two kernel-doc markups
  blk-mq: docs: add kernel-doc description for a new struct member
  docs: userspace-api: add iommu.rst to the index file
  docs: hwmon: mp2975.rst: address some html build warnings
  docs: net: statistics.rst: remove a duplicated kernel-doc
  docs: kasan.rst: add two missing blank lines
  ...
2020-11-03 13:14:14 -08:00
Linus Torvalds ce2e33ba41 A small number of fixes, plus a build tweak to respect the desire for
silence in V=0 builds.
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Merge tag 'docs-5.10-3' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A small number of fixes, plus a build tweak to respect the desire for
  silence in V=0 builds"

* tag 'docs-5.10-3' of git://git.lwn.net/linux:
  docs: fix automarkup regression on Python 2
  documentation: arm: sunxi: add Allwinner H6 documents
  scripts: kernel-doc: split typedef complex regex
  scripts: kernel-doc: fix typedef parsing
  docs: Makefile: honor V=0 for docs building
2020-11-03 09:57:30 -08:00
Jonathan Corbet 4f3e69060d docs: fix automarkup regression on Python 2
It turns out that the Python 2 re module lacks the ASCII flag, so don't try
to use it there.

Fixes: f66e47f98c ("docs: automarkup.py: Fix regexes to solve sphinx 3 warnings")
Reported-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-11-03 08:22:00 -07:00
Linus Torvalds 31f020064f Char/Misc fixes/removals for 5.10-rc2
Here's some small fixes for 5.10-rc2 and a big driver removal.
 
 The fixes are for some reported issues in the interconnect and coresight
 drivers, nothing major.
 
 The "big" driver removal is the MIC drivers have been asked to be
 removed as the hardware never shipped and Intel no longer wants to
 maintain something that no one can use.  This is welcomed by many as the
 DMA usage of these drivers was "interesting" and the security people
 were starting to question some issues that were starting to be found in
 the codebase.
 
 Note, one of the subsystems for this driver, the "VOP" code, will
 probably come back in future kernel versions as it was looking to
 potentially solve some PCIe virtualization issues that a number of other
 vendors were wanting to solve.  But as-is, this codebase didn't work for
 anyone else so no actual functionality is being removed.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes/removals from Greg KH:
 "Here's some small fixes for 5.10-rc2 and a big driver removal.

  The fixes are for some reported issues in the interconnect and
  coresight drivers, nothing major.

  The "big" driver removal is the MIC drivers have been asked to be
  removed as the hardware never shipped and Intel no longer wants to
  maintain something that no one can use. This is welcomed by many as
  the DMA usage of these drivers was "interesting" and the security
  people were starting to question some issues that were starting to be
  found in the codebase.

  Note, one of the subsystems for this driver, the "VOP" code, will
  probably come back in future kernel versions as it was looking to
  potentially solve some PCIe virtualization issues that a number of
  other vendors were wanting to solve. But as-is, this codebase didn't
  work for anyone else so no actual functionality is being removed.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  coresight: cti: Initialize dynamic sysfs attributes
  coresight: Fix uninitialised pointer bug in etm_setup_aux()
  coresight: add module license
  misc: mic: remove the MIC drivers
  interconnect: qcom: use icc_sync state for sm8[12]50
  interconnect: qcom: Ensure that the floor bandwidth value is enforced
  interconnect: qcom: sc7180: Init BCMs before creating the nodes
  interconnect: qcom: sdm845: Init BCMs before creating the nodes
  interconnect: Aggregate before setting initial bandwidth
  interconnect: qcom: sdm845: Enable keepalive for the MM1 BCM
2020-11-01 10:05:16 -08:00
Linus Torvalds 9c75b68b91 Driver core / Documentation fixes for 5.10-rc2
Here is one tiny debugfs change to fix up an API where the last user was
 successfully fixed up in 5.10-rc1 (so it couldn't be merged earlier),
 and a much larger Documentation/ABI/ update to the files so they can be
 automatically parsed by our tools.
 
 The Documentation/ABI/ updates are just formatting issues, small ones to
 bring the files into parsable format, and have been acked by numerous
 subsystem maintainers and the documentation maintainer.  I figured it
 was good to get this into 5.10-rc2 to help with the merge issues that
 would arise if these were to stick in linux-next until 5.11-rc1.
 
 The debugfs change has been in linux-next for a long time, and the
 Documentation updates only for the last linux-next release.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and documentation fixes from Greg KH:
 "Here is one tiny debugfs change to fix up an API where the last user
  was successfully fixed up in 5.10-rc1 (so it couldn't be merged
  earlier), and a much larger Documentation/ABI/ update to the files so
  they can be automatically parsed by our tools.

  The Documentation/ABI/ updates are just formatting issues, small ones
  to bring the files into parsable format, and have been acked by
  numerous subsystem maintainers and the documentation maintainer. I
  figured it was good to get this into 5.10-rc2 to help wih the merge
  issues that would arise if these were to stick in linux-next until
  5.11-rc1.

  The debugfs change has been in linux-next for a long time, and the
  Documentation updates only for the last linux-next release"

* tag 'driver-core-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (40 commits)
  scripts: get_abi.pl: assume ReST format by default
  docs: ABI: sysfs-class-led-trigger-pattern: remove hw_pattern duplication
  docs: ABI: sysfs-class-backlight: unify ABI documentation
  docs: ABI: sysfs-c2port: remove a duplicated entry
  docs: ABI: sysfs-class-power: unify duplicated properties
  docs: ABI: unify /sys/class/leds/<led>/brightness documentation
  docs: ABI: stable: remove a duplicated documentation
  docs: ABI: change read/write attributes
  docs: ABI: cleanup several ABI documents
  docs: ABI: sysfs-bus-nvdimm: use the right format for ABI
  docs: ABI: vdso: use the right format for ABI
  docs: ABI: fix syntax to be parsed using ReST notation
  docs: ABI: convert testing/configfs-acpi to ReST
  docs: Kconfig/Makefile: add a check for broken ABI files
  docs: abi-testing.rst: enable --rst-sources when building docs
  docs: ABI: don't escape ReST-incompatible chars from obsolete and removed
  docs: ABI: create a 2-depth index for ABI
  docs: ABI: make it parse ABI/stable as ReST-compatible files
  docs: ABI: sysfs-uevent: make it compatible with ReST output
  docs: ABI: testing: make the files compatible with ReST output
  ...
2020-11-01 09:59:13 -08:00
Linus Torvalds 2d38c80d5b ARM:
* selftest fix
 * Force PTE mapping on device pages provided via VFIO
 * Fix detection of cacheable mapping at S2
 * Fallback to PMD/PTE mappings for composite huge pages
 * Fix accounting of Stage-2 PGD allocation
 * Fix AArch32 handling of some of the debug registers
 * Simplify host HYP entry
 * Fix stray pointer conversion on nVHE TLB invalidation
 * Fix initialization of the nVHE code
 * Simplify handling of capabilities exposed to HYP
 * Nuke VCPUs caught using a forbidden AArch32 EL0
 
 x86:
 * new nested virtualization selftest
 * Miscellaneous fixes
 * make W=1 fixes
 * Reserve new CPUID bit in the KVM leaves
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:
   - selftest fix
   - force PTE mapping on device pages provided via VFIO
   - fix detection of cacheable mapping at S2
   - fallback to PMD/PTE mappings for composite huge pages
   - fix accounting of Stage-2 PGD allocation
   - fix AArch32 handling of some of the debug registers
   - simplify host HYP entry
   - fix stray pointer conversion on nVHE TLB invalidation
   - fix initialization of the nVHE code
   - simplify handling of capabilities exposed to HYP
   - nuke VCPUs caught using a forbidden AArch32 EL0

  x86:
   - new nested virtualization selftest
   - miscellaneous fixes
   - make W=1 fixes
   - reserve new CPUID bit in the KVM leaves"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: vmx: remove unused variable
  KVM: selftests: Don't require THP to run tests
  KVM: VMX: eVMCS: make evmcs_sanitize_exec_ctrls() work again
  KVM: selftests: test behavior of unmapped L2 APIC-access address
  KVM: x86: Fix NULL dereference at kvm_msr_ignored_check()
  KVM: x86: replace static const variables with macros
  KVM: arm64: Handle Asymmetric AArch32 systems
  arm64: cpufeature: upgrade hyp caps to final
  arm64: cpufeature: reorder cpus_have_{const, final}_cap()
  KVM: arm64: Factor out is_{vhe,nvhe}_hyp_code()
  KVM: arm64: Force PTE mapping on fault resulting in a device mapping
  KVM: arm64: Use fallback mapping sizes for contiguous huge page sizes
  KVM: arm64: Fix masks in stage2_pte_cacheable()
  KVM: arm64: Fix AArch32 handling of DBGD{CCINT,SCRext} and DBGVCR
  KVM: arm64: Allocate stage-2 pgd pages with GFP_KERNEL_ACCOUNT
  KVM: arm64: Drop useless PAN setting on host EL1 to EL2 transition
  KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation
  KVM: arm64: Don't corrupt tpidr_el2 on failed HVC call
  x86/kvm: Reserve KVM_FEATURE_MSI_EXT_DEST_ID
2020-11-01 09:43:32 -08:00
Linus Torvalds aab6bf505a arm64 fixes for -rc2
- Fixes to MTE kselftests
 
 - Fix return code from KVM Spectre-v2 hypercall
 
 - Build fixes for ld.lld and Clang's infamous integrated assembler
 
 - Ensure RCU is up and running before we use printk()
 
 - Workaround for Cortex-A77 erratum 1508412
 
 - Fix linker warnings from unexpected ELF sections
 
 - Ensure PE/COFF sections are 64k aligned
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The diffstat is a bit spread out thanks to an invasive CPU erratum
  workaround which missed the merge window and also a bunch of fixes to
  the recently added MTE selftests.

   - Fixes to MTE kselftests

   - Fix return code from KVM Spectre-v2 hypercall

   - Build fixes for ld.lld and Clang's infamous integrated assembler

   - Ensure RCU is up and running before we use printk()

   - Workaround for Cortex-A77 erratum 1508412

   - Fix linker warnings from unexpected ELF sections

   - Ensure PE/COFF sections are 64k aligned"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
  arm64/smp: Move rcu_cpu_starting() earlier
  arm64: Add workaround for Arm Cortex-A77 erratum 1508412
  arm64: Add part number for Arm Cortex-A77
  arm64: mte: Document that user PSTATE.TCO is ignored by kernel uaccess
  module: use hidden visibility for weak symbol references
  arm64: efi: increase EFI PE/COFF header padding to 64 KB
  arm64: vmlinux.lds: account for spurious empty .igot.plt sections
  kselftest/arm64: Fix check_user_mem test
  kselftest/arm64: Fix check_ksm_options test
  kselftest/arm64: Fix check_mmap_options test
  kselftest/arm64: Fix check_child_memory test
  kselftest/arm64: Fix check_tags_inclusion test
  kselftest/arm64: Fix check_buffer_fill test
  arm64: avoid -Woverride-init warning
  KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED
  arm64: vdso32: Allow ld.lld to properly link the VDSO
2020-10-30 13:16:03 -07:00
Linus Torvalds 65b55d4c85 ARM: SoC fixes for v5.10
This is a fairly large set of bug fixes on top of -rc1,
 as most of them were ready but didn't quite make it into
 the last-minute pull requests for the merge window.
 
 Allwinner:
 	Fix for incorrect CPU overtemperature limit
 
 Amlogic:
 	Multiple smaller DT bugfixes, and missing device nodes
 
 Marvell EBU:
 	Add missing aliases for ethernet switch ports on
 	espressobin board
 
 Marvell MMP:
 	One DTC warning fix
 	one bugfix for camera interface power-down
 
 NXP i.MX:
 	Re-enable the GPIO driver on all defconfigs
 
 ST STM32MP1:
 	Fix random crashes from incorrect voltage settings
 
 Synaptics Berlin:
 	Enable the correct hardware timer driver
 
 Texas Instruments K2G:
 	fix a boot regression in the power domain code
 
 TEE drivers:
 	Fix regression in TEE "login" method
 
 SCMI drivers:
 	multiple code fixes for corner cases in newly added code
 
 MAINTAINERS file:
 	Move Kukjin Kim and Sangbeom Kim used to work on
 	Samsung Exynos.
 	Masahiro Yamada is stepping down as Uniphier maintainer
 
 I did not include a series of patches that work around a
 regression caused by a bugfix in an ethernet phy driver
 that resulted in an inadvertent DT binding change. This is
 still under discussion.
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Merge tag 'arm-soc-fixes-v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a fairly large set of bug fixes on top of -rc1, as most of
  them were ready but didn't quite make it into the last-minute pull
  requests for the merge window.

  Allwinner:
   - fix for incorrect CPU overtemperature limit

  Amlogic:
   - multiple smaller DT bugfixes, and missing device nodes

  Marvell EBU:
   - add missing aliases for ethernet switch ports on espressobin board

  Marvell MMP:
   - DTC warning fix
   - bugfix for camera interface power-down

  NXP i.MX:
   - re-enable the GPIO driver on all defconfigs

  ST STM32MP1:
   - fix random crashes from incorrect voltage settings

  Synaptics Berlin:
   - enable the correct hardware timer driver

  Texas Instruments K2G:
   - fix a boot regression in the power domain code

  TEE drivers:
   - fix regression in TEE "login" method

  SCMI drivers:
   - multiple code fixes for corner cases in newly added code

  MAINTAINERS file:
   - move Kukjin Kim and Sangbeom Kim to credits (used to work on
     Samsung Exynos)
   - Masahiro Yamada is stepping down as Uniphier maintainer

  I did not include a series of patches that work around a regression
  caused by a bugfix in an ethernet phy driver that resulted in an
  inadvertent DT binding change. This is still under discussion"

* tag 'arm-soc-fixes-v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (31 commits)
  soc: ti: ti_sci_pm_domains: check for proper args count in xlate
  ARM: dts: stm32: Describe Vin power supply on stm32mp157c-edx board
  ARM: dts: stm32: Describe Vin power supply on stm32mp15xx-dkx board
  ARM: multi_v5_defconfig: Select CONFIG_GPIO_MXC
  ARM: imx_v4_v5_defconfig: Select CONFIG_GPIO_MXC
  ARM: dts: mmp2-olpc-xo-1-75: Use plural form of "-gpios"
  ARM: dts: mmp3: Add power domain for the camera
  arm64: berlin: Select DW_APB_TIMER_OF
  dt-bindings: sram: sunxi-sram: add V3s compatible string
  MAINTAINERS: Move Sangbeom Kim to credits
  MAINTAINERS: Move Kukjin Kim to credits
  MAINTAINERS: step down as maintainer of UniPhier SoCs and Denali driver
  ARM: multi_v7_defconfig: Build in CONFIG_GPIO_MXC by default
  ARM: imx_v6_v7_defconfig: Build in CONFIG_GPIO_MXC by default
  arm64: defconfig: Build in CONFIG_GPIO_MXC by default
  arm64: dts: meson: odroid-n2 plus: fix vddcpu_a pwm
  ARM: dts: meson8: remove two invalid interrupt lines from the GPU node
  arm64: dts: amlogic: add missing ethernet reset ID
  firmware: arm_scmi: Fix duplicate workqueue name
  firmware: arm_scmi: Fix locking in notifications
  ...
2020-10-30 13:06:07 -07:00
Linus Torvalds 7ba4d86750 drm fixes for 5.10-rc2
docs:
 - kernel doc fixes
 
 core:
 - fix shmem helpers dma-buf mmap bug
 
 amdgpu:
 - Add new navi1x PCI ID
 - GPUVM reserved area fixes
 - Misc display fixes
 - Fix bad interactions between display code and CONFIG_KGDB
 - Fixes for SMU manual fan control and i2c
 
 nouveau:
 - endian regression fix for old gpus
 - buffer object refcount fix
 - uapi start/end alignment fix
 - display notifier fix
 - display clock checking fixes
 
 i915:
 - Fix max memory region size calculation
 - Restore ILK-M RPS support, restoring performance
 - Reject 90/270 degreerotated initial fbs
 
 panel:
 - mantix reset fixes
 
 sun4i:
 - scalar fix
 
 vc4:
 - hdmi audio fixes
 
 v3d:
 - fix double free
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Merge tag 'drm-fixes-2020-10-30-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "A busier rc2 than normal, have larger sets of fixes for amdgpu +
  nouveau, along with some i915, docs, core, panel, sun4i, v3d, vc4
  fixes.

  Nothing spooky though or pumpkin related.

  docs:
   - kernel doc fixes

  core:
   - fix shmem helpers dma-buf mmap bug

  amdgpu:
   - Add new navi1x PCI ID
   - GPUVM reserved area fixes
   - Misc display fixes
   - Fix bad interactions between display code and CONFIG_KGDB
   - Fixes for SMU manual fan control and i2c

  nouveau:
   - endian regression fix for old gpus
   - buffer object refcount fix
   - uapi start/end alignment fix
   - display notifier fix
   - display clock checking fixes

  i915:
   - Fix max memory region size calculation
   - Restore ILK-M RPS support, restoring performance
   - Reject 90/270 degreerotated initial fbs

  panel:
   - mantix reset fixes

  sun4i:
   - scalar fix

  vc4:
   - hdmi audio fixes

  v3d:
   - fix double free"

* tag 'drm-fixes-2020-10-30-1' of git://anongit.freedesktop.org/drm/drm: (42 commits)
  drm/nouveau/kms/nv50-: Fix clock checking algorithm in nv50_dp_mode_valid()
  drm/nouveau/kms/nv50-: Get rid of bogus nouveau_conn_mode_valid()
  drm/nouveau/device: fix changing endianess code to work on older GPUs
  drm/nouveau/gem: fix "refcount_t: underflow; use-after-free"
  drm/nouveau/kms/nv50-: Program notifier offset before requesting disp caps
  drm/nouveau/nouveau: fix the start/end range for migration
  drm/i915: Reject 90/270 degree rotated initial fbs
  drm/i915: Restore ILK-M RPS support
  drm/i915/region: fix max size calculation
  drm/vc4: Rework the structure conversion functions
  drm/vc4: hdmi: Add a name to the codec DAI component
  drm/shme-helpers: Fix dma_buf_mmap forwarding bug
  drm/vc4: hdmi: Avoid sleeping in atomic context
  drm/amdgpu/pm: fix the fan speed in fan1_input in manual mode for navi1x
  drm/amd/pm: fix the wrong fan speed in fan1_input
  drm/amdgpu/swsmu: drop smu i2c bus on navi1x
  drm/vc4: drv: Add error handding for bind
  drm: drm_print.h: fix kernel-doc markups
  drm: kernel-doc: drm_dp_helper.h: fix a typo
  drm: kernel-doc: add description for a new function parameter
  ...
2020-10-30 10:54:44 -07:00
Mauro Carvalho Chehab 26a0755304 docs: ABI: sysfs-class-led-trigger-pattern: remove hw_pattern duplication
The ABI files are supposed to be unique. Yet,
in the specific case of hw_pattern, there are some duplicated
entries as warned by scripts/get_abi.pl:

	Warning: /sys/class/leds/<led>/hw_pattern is defined 3 times:  Documentation/ABI/testing/sysfs-class-led-trigger-pattern:14  Documentation/ABI/testing/sysfs-class-led-driver-sc27xx:0  Documentation/ABI/testing/sysfs-class-led-driver-el15203000:0

Drop the duplication from the ABI files, moving the specific
definitions to files inside Documentation/leds.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/038e57881550550b298e598f8f9b7f20515cbe15.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:15:03 +01:00
Mauro Carvalho Chehab bd6e8441c2 docs: ABI: sysfs-class-backlight: unify ABI documentation
Both adp8860 and adp8870 define some extensions to the
backlight class. This causes warnings:

	Warning: /sys/class/backlight/<backlight>/ambient_light_level is defined 2 times:  /sys/class/backlight/<backlight>/ambient_light_level:8  /sys/class/backlight/<backlight>/ambient_light_level:30
	Warning: /sys/class/backlight/<backlight>/ambient_light_zone is defined 2 times:  /sys/class/backlight/<backlight>/ambient_light_zone:18  /sys/class/backlight/<backlight>/ambient_light_zone:40

As ABI definitions shouldn't be duplicated.

Unfortunately, the ABI is dependent on the specific device
features. As such, ambient_light_level range is somewhat
different among the supported devices.

The ambient_light_zone is even worse: the meanings of each
preset are different, and there's no ABI to retrieve
the supported types nor their meanins. Unfortunately,
it is too late to fix it without causing regressions,
as this has been used since Kernel v2.6.35.

Rewrite those ABI documentation using the current documentation
as a reference, and double-checking at the datasheets:

	https://www.analog.com/media/en/technical-documentation/data-sheets/ADP8870.pdf
	https://www.analog.com/media/en/technical-documentation/data-sheets/ADP8860.pdf

in order to properly document the differences between those two
drivers.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/342195ad5a819d9bcfcebc133c77ab69b4211672.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:15:01 +01:00
Mauro Carvalho Chehab 1b3023ef54 docs: ABI: sysfs-c2port: remove a duplicated entry
As warned by scripts/get_abi.pl:
	Warning: /sys/class/c2port/c2portX/flash_erase is defined 2 times:  Documentation/ABI/testing/sysfs-c2port:60  Documentation/ABI/testing/sysfs-c2port:68

This entry was added twice at the same patch. Probalby a
cut-and paste issue.

Fixes: 4e17e1db96 ("Add c2 port support")
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4ea2b31ddc76161fbae004f2f2ed91dfb757703f.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:52 +01:00
Mauro Carvalho Chehab 9e0b29adfb docs: ABI: sysfs-class-power: unify duplicated properties
The ABI is not supposed to have duplicated entries, as warned
by get_abi.pl:

	$ ./scripts/get_abi.pl validate 2>&1|grep sysfs-class-power
	Warning: /sys/class/power_supply/<supply_name>/current_avg is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:108  Documentation/ABI/testing/sysfs-class-power:391
	Warning: /sys/class/power_supply/<supply_name>/current_max is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:121  Documentation/ABI/testing/sysfs-class-power:404
	Warning: /sys/class/power_supply/<supply_name>/current_now is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:130  Documentation/ABI/testing/sysfs-class-power:414
	Warning: /sys/class/power_supply/<supply_name>/temp is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:281  Documentation/ABI/testing/sysfs-class-power:493
	Warning: /sys/class/power_supply/<supply_name>/temp_alert_max is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:291  Documentation/ABI/testing/sysfs-class-power:505
	Warning: /sys/class/power_supply/<supply_name>/temp_alert_min is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:306  Documentation/ABI/testing/sysfs-class-power:521
	Warning: /sys/class/power_supply/<supply_name>/temp_max is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:322  Documentation/ABI/testing/sysfs-class-power:537
	Warning: /sys/class/power_supply/<supply_name>/temp_min is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:333  Documentation/ABI/testing/sysfs-class-power:547
	Warning: /sys/class/power_supply/<supply_name>/voltage_max is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:356  Documentation/ABI/testing/sysfs-class-power:571
	Warning: /sys/class/power_supply/<supply_name>/voltage_min is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:367  Documentation/ABI/testing/sysfs-class-power:581
	Warning: /sys/class/power_supply/<supply_name>/voltage_now is defined 2 times:  Documentation/ABI/testing/sysfs-class-power:378  Documentation/ABI/testing/sysfs-class-power:591

Yet, both USB and Battery share a common set of charging-related
properties.

Unify the entries for such properties in order to avoid
duplication, while preserving the battery and USB-specific
data properly documented.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/bcdf5f76326ea48a990a7cac612af216c387537d.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:50 +01:00
Mauro Carvalho Chehab edef2fa297 docs: ABI: unify /sys/class/leds/<led>/brightness documentation
This ABI is defined twice, one for normal leds and another
one for multicolor ones.

Ensure that just one definition is there at ABI.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/1115022e7f172b19ee8610f2ad28cc2f0ca93592.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:48 +01:00
Mauro Carvalho Chehab 637ae1fb5d docs: ABI: stable: remove a duplicated documentation
Perhaps due to a wrong cut-and-paste, this entry:

	What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu

was added twice by the same patch, one following the other.

Remove the duplication.

Fixes: c2e5df616e ("vmbus: add per-channel sysfs info")
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/091e8de5543c280ceb47edcb3ab6d0e9f3fa085b.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:33 +01:00
Mauro Carvalho Chehab 4119f0dfbd docs: ABI: change read/write attributes
Unfortunately, (R) and (W) are valid markups for enumerated
lists, as described at:
	https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#enumerated-lists

So, we ned to replace them by:

	(R) -> (Read)
	(W) -> (Write)

As otherwise, (R) will be displayed as R., with is not what
it is desired.

There's no need to touch (RO) and (RW).

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6e81ad8064f3ed4f8dc265086fdf1c618043f935.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:31 +01:00
Mauro Carvalho Chehab 54a19b4d3f docs: ABI: cleanup several ABI documents
There are some ABI documents that, while they don't generate
any warnings, they have issues when parsed by get_abi.pl script
on its output result.

Address them, in order to provide a clean output.

Reviewed-by: Tom Rix <trix@redhat.com> # for fpga-manager
Reviewed-By: Kajol Jain<kjain@linux.ibm.com> # for sysfs-bus-event_source-devices-hv_gpci and sysfs-bus-event_source-devices-hv_24x7
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO
Acked-by: Oded Gabbay <oded.gabbay@gmail.com> # for Habanalabs
Acked-by: Vaibhav Jain <vaibhav@linux.ibm.com> # for sysfs-bus-papr-pmem
Acked-by: Cezary Rojewski <cezary.rojewski@intel.com> # for catpt
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Ilya Dryomov <idryomov@gmail.com> # for rbd
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5bc78e5b68ed1e9e39135173857cb2e753be868f.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:14:29 +01:00
Mauro Carvalho Chehab ed8c39d439 docs: ABI: sysfs-bus-nvdimm: use the right format for ABI
This ABI is not following the format described at ABI/README.

Use it, filling in the blanks with the git log that added it,
and using the current e-mail from Dan.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9ec379cbf6dcf65ce3039c3671baf7bcaea532f4.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:12:53 +01:00
Mauro Carvalho Chehab 97f26cab45 docs: ABI: vdso: use the right format for ABI
This ABI is not following the format described at ABI/README.

Use it, filling in the blanks with the git log that added it,
and using the current e-mail from Andy.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/28c7cf3a71e15fb7499b70ec8f38c2efaaf4add2.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:12:53 +01:00
Mauro Carvalho Chehab 002a9c2f99 docs: ABI: fix syntax to be parsed using ReST notation
There are a number of new changes at the ABI files that cause
them to produce warnings when generating ABI output.

Fix them.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/55a89f423cf122982c462d257722e44d6ece4b36.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:12:39 +01:00
Mauro Carvalho Chehab b1faa368bb docs: ABI: convert testing/configfs-acpi to ReST
There are some problems with this file when a ReST content
is produced. Fix it.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/f56daf94b80f1051438e8c787ba04552adb66e67.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:10:03 +01:00
Mauro Carvalho Chehab 75442fb0cc docs: Kconfig/Makefile: add a check for broken ABI files
The files under Documentation/ABI should follow the syntax
as defined at Documentation/ABI/README.

Allow checking if they're following the syntax by running
the ABI parser script on COMPILE_TEST.

With that, when there's a problem with a file under
Documentation/ABI, it would produce a warning like:

	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#14:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor' doesn't have a description
	Warning: file ./Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats#21:
		What '/sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal' doesn't have a description

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/57a38de85cb4b548857207cf1fc1bf1ee08613c9.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:08:07 +01:00
Mauro Carvalho Chehab 50865d041e docs: abi-testing.rst: enable --rst-sources when building docs
Now that ABI/testing documents were fixed, add --rst-sources to
the ABI/testing too.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9242473fd3df785565bb6084b1b814cc15074fb2.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:02 +01:00
Mauro Carvalho Chehab 7832dea738 docs: ABI: don't escape ReST-incompatible chars from obsolete and removed
With just a single fix, the contents there can be parsed properly
without the need to escape any ReST incompatible stuff.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/472f4574b6aa2ff4de5a819db1a4a5c9a34f5168.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:02 +01:00
Mauro Carvalho Chehab c12759ff2d docs: ABI: create a 2-depth index for ABI
That helps to identify what ABI files are adding titles.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/e267b36ae7f32bab2a86f1da6b40bb3e62c877d4.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:02 +01:00
Mauro Carvalho Chehab 642514df1b docs: ABI: make it parse ABI/stable as ReST-compatible files
Now that the stable ABI files are compatible with ReST,
parse them without converting complex descriptions as literal
blocks nor escaping special characters.

Please notice that escaping special characters will probably
be needed at descriptions, at least for the asterisk character.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/59ccbaa75ff05f23e701dd9a0bbe118e9343a553.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:02 +01:00
Mauro Carvalho Chehab 906e4af935 docs: ABI: sysfs-uevent: make it compatible with ReST output
- Replace " by ``, in order to use monospaced fonts;
- mark literal blocks as such.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/63904cc9b6a8581c5fc2ea1dca5d925874c67372.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:02 +01:00
Mauro Carvalho Chehab 3443333284 docs: ABI: testing: make the files compatible with ReST output
Some files over there won't parse well by Sphinx.

Fix them.

Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for IIO
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/58cf3c2d611e0197fb215652719ebd82ca2658db.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:01 +01:00
Mauro Carvalho Chehab 98913408c5 docs: ABI: stable: make files ReST compatible
Several entries at the stable ABI files won't parse if we pass
them directly to the ReST output.

Adjust them, in order to allow adding their contents as-is at
the stable ABI book.

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/467a0dfbcdf00db710a629d3fe4a2563750339d8.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:01 +01:00
Mauro Carvalho Chehab c7e45ea429 docs: ABI: README: specify that files should be ReST compatible
As we plan to remove the escaping code from the scripts/get_abi.pl,
specify at the ABI README file that the content of the file should
be ReST compatible.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/178a997070debd1953ba7d302c375948501d6193.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:01 +01:00
Mauro Carvalho Chehab a7ee04b3ef docs: add ABI documentation to the admin-guide book
As we don't want a generic Sphinx extension to execute commands,
change the one proposed to Markus to call the abi_book.pl
script.

Use a script to parse the Documentation/ABI directory and output
it at the admin-guide.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5651482b06500e69a1acdf92152f90a203e6521d.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:01 +01:00
Mauro Carvalho Chehab 3c543d2989 docs: kernel_abi.py: Handle with a lazy Sphinx parser
The Sphinx docutils parser is lazy: if the content is bigger than
a certain number of lines, it silenlty stops parsing it,
producing an incomplete content. This seems to be worse on newer
Sphinx versions, like 2.0.

So, change the logic to parse the contents per input file.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4659b60795739308e34d2d00c57ee0742a9cd2ab.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab 997b7c8b4a docs: kernel_abi.py: use --enable-lineno for get_abi.pl
Just like kernel-doc extension, we need to be able to identify
what part of an imported document has issues, as reporting them
as:

	get_abi.pl rest --dir $srctree/Documentation/ABI/obsolete --rst-source:1689: ERROR: Unexpected indentation.

Makes a lot harder for someone to fix.

It should be noticed that it the line which will be reported is
the line where the "What:" definition is, and not the line
with actually has an error.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d6155ab16fb7631f2fa8e7a770eae72f24bf7cc5.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab c830fa9a4d docs: kernel_abi.py: make it compatible with Sphinx 1.7+
The same way kerneldoc.py needed changes to work with newer
Sphinx, this script needs the same changes.

While here, reorganize the include order to match kerneldoc.py.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/f2b25caef5db7738629773a03463908d3b39b83a.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab 823830d406 docs: kernel_abi.py: fix UTF-8 support
The parser breaks with UTF-8 characters with Sphinx 1.4.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9e7c8e3b0efaa1ae0536da6493ab438bd3f9fe58.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab 9ca876f963 docs: kernel_abi.py: add a script to parse ABI documentation
The ABI documentation is special: it is not plain text files,
but, instead, files with an strict format, as specified by
Documentation/ABI/README.

Add a parser for it.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/48abf1a410237e63f85354a8cd7027fdf25657bf.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Mauro Carvalho Chehab 678a63f988 docs: kernellog.py: add support for info()
An extension may want to just inform about something. So, add
support for it.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/0ddebd8677605d789d53433c8a5344c68da82a73.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:02:26 +01:00
Greg Kroah-Hartman 0d519cbf38 debugfs: remove return value of debugfs_create_devm_seqfile()
No one checks the return value of debugfs_create_devm_seqfile(), as it's
not needed, so make the return value void, so that no one tries to do so
in the future.

Link: https://lore.kernel.org/r/20201023131037.2500765-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 08:37:39 +01:00
Rob Herring 96d389ca10 arm64: Add workaround for Arm Cortex-A77 erratum 1508412
On Cortex-A77 r0p0 and r1p0, a sequence of a non-cacheable or device load
and a store exclusive or PAR_EL1 read can cause a deadlock.

The workaround requires a DMB SY before and after a PAR_EL1 register
read. In addition, it's possible an interrupt (doing a device read) or
KVM guest exit could be taken between the DMB and PAR read, so we
also need a DMB before returning from interrupt and before returning to
a guest.

A deadlock is still possible with the workaround as KVM guests must also
have the workaround. IOW, a malicious guest can deadlock an affected
systems.

This workaround also depends on a firmware counterpart to enable the h/w
to insert DMB SY after load and store exclusive instructions. See the
errata document SDEN-1152370 v10 [1] for more information.

[1] https://static.docs.arm.com/101992/0010/Arm_Cortex_A77_MP074_Software_Developer_Errata_Notice_v10.pdf

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: kvmarm@lists.cs.columbia.edu
Link: https://lore.kernel.org/r/20201028182839.166037-2-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2020-10-29 12:56:01 +00:00
Sudeep Dutt 80ade22c06 misc: mic: remove the MIC drivers
This patch removes the MIC drivers from the kernel tree
since the corresponding devices have been discontinued.

Removing the dma and char-misc changes in one patch and
merging via the char-misc tree is best to avoid any
potential build breakage.

Cc: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/8c1443136563de34699d2c084df478181c205db4.1603854416.git.sudeep.dutt@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-28 19:12:03 +01:00
David Woodhouse 5a169bf04c x86/kvm: Reserve KVM_FEATURE_MSI_EXT_DEST_ID
No functional change; just reserve the feature bit for now so that VMMs
can start to implement it.

This will allow the host to indicate that MSI emulation supports 15-bit
destination IDs, allowing up to 32768 CPUs without interrupt remapping.

cf. https://patchwork.kernel.org/patch/11816693/ for qemu

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <4cd59bed05f4b7410d3d1ffd1e997ab53683874d.camel@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-28 13:52:05 -04:00
Catalin Marinas ef5dd6a0c8 arm64: mte: Document that user PSTATE.TCO is ignored by kernel uaccess
On exception entry, the kernel explicitly resets the PSTATE.TCO (tag
check override) so that any kernel memory accesses will be checked (the
bit is restored on exception return). This has the side-effect that the
uaccess routines will not honour the PSTATE.TCO that may have been set
by the user prior to a syscall.

There is no issue in practice since PSTATE.TCO is expected to be used
only for brief periods in specific routines (e.g. garbage collection).
To control the tag checking mode of the uaccess routines, the user will
have to invoke a corresponding prctl() call.

Document the kernel behaviour w.r.t. PSTATE.TCO accordingly.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: df9d7a22dd ("arm64: mte: Add Memory Tagging Extension documentation")
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Szabolcs Nagy <szabolcs.nagy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
2020-10-28 17:50:39 +00:00
Mauro Carvalho Chehab afc74ce7b4 docs: SafeSetID: fix a warning
As reported by Sphinx 2.4.4:

	docs/Documentation/admin-guide/LSM/SafeSetID.rst:110: WARNING: Title underline too short.

	Note on GID policies and setgroups()
	==================

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4afa281c170daabd1ce522653d5d5d5078ebd92c.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:42:02 -06:00
Mauro Carvalho Chehab cc507c435b gpu: docs: amdgpu.rst: get rid of wrong kernel-doc markups
As reported by kernel-doc:
    ./drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c:1: warning: no structured comments found
    ./drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1: warning: no structured comments found

Those files only contain

	/**
	 * DOC:
	 */

markups, but they're included twice there: one to parse
such markup, and another one to parse internal functions.

In the case of amdgpu_xgmi.c, as it has just one such
markup, we can simply include the file once, and let it
parse the entire file without passing arguments to kernel-doc.

This should place everything altogether.

For amdgpu_ras.c, however, we need to remove the kernel-doc
with just internal. This should be re-introduced if this
file ever gets new non-DOC markups.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/bd070923591ae54f9587e7407b6291ac116952b2.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:42:02 -06:00
Mauro Carvalho Chehab 7c128a249c docs: fs: api-summary.rst: get rid of kernel-doc include
The direct-io.c file used to have just two exported symbols:

	- dio_end_io()
	- __blockdev_direct_IO()

The first one was removed by changeset
c33fe275b5 ("fs: remove no longer used dio_end_io()")

And the last one is used on most places indirectly, via
the inline macro blockdev_direct_IO() provided by fs.h.
Yet, neither the macro or the function have kernel-doc
markups.

So, drop the inclusion of fs/direct-io.c at the docs.

Fixes: c33fe275b5 ("fs: remove no longer used dio_end_io()")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d0a9fffedca102633c168adaf157f34288a4ea67.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:41:15 -06:00
Mauro Carvalho Chehab e3e7439dbc docs: lockdep-design: fix some warning issues
There are several warnings caused by a recent change
224ec489d3 ("lockdep/Documention: Recursive read lock detection reasoning")

Those are reported by htmldocs build:

    Documentation/locking/lockdep-design.rst:429: WARNING: Definition list ends without a blank line; unexpected unindent.
    Documentation/locking/lockdep-design.rst:452: WARNING: Block quote ends without a blank line; unexpected unindent.
    Documentation/locking/lockdep-design.rst:453: WARNING: Unexpected indentation.
    Documentation/locking/lockdep-design.rst:453: WARNING: Blank line required after table.
    Documentation/locking/lockdep-design.rst:454: WARNING: Block quote ends without a blank line; unexpected unindent.
    Documentation/locking/lockdep-design.rst:455: WARNING: Unexpected indentation.
    Documentation/locking/lockdep-design.rst:455: WARNING: Blank line required after table.
    Documentation/locking/lockdep-design.rst:456: WARNING: Block quote ends without a blank line; unexpected unindent.
    Documentation/locking/lockdep-design.rst:457: WARNING: Unexpected indentation.
    Documentation/locking/lockdep-design.rst:457: WARNING: Blank line required after table.

Besides the reported issues, there are some missing blank
lines that ended producing wrong html output, and some
literals are not properly identified.

Also, the symbols used at the irq enabled/disable table
are not displayed as expected, as they're not literals.
Also, on another table they're using a different notation.

Fixes: 224ec489d3 ("lockdep/Documention: Recursive read lock detection reasoning")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/3b9431ac5c01e38111cd59928a93e7259ab7db0f.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:41:15 -06:00
Mauro Carvalho Chehab ef900cccb8 MAINTAINERS: fix broken doc refs due to yaml conversion
Several *.txt files got converted to yaml. Update their
references at MAINTAINERS file accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/3b58afec5195d4ea505ea9b3f74d53f7abed4e6f.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:41:15 -06:00
Mauro Carvalho Chehab 4b7560c5e4 ice: docs fix a devlink info that broke a table
Changeset 410d06879c ("ice: add the DDP Track ID to devlink info")
added description for a new devlink field, but forgot to add
one of its columns, causing it to break:

	.../Documentation/networking/devlink/ice.rst:15: WARNING: Error parsing content block for the "list-table" directive: uniform two-level bullet list expected, but row 11 does not contain the same number of items as row 1 (3 vs 4).

	.. list-table:: devlink info versions implemented
	    :widths: 5 5 5 90
...
	    * - ``fw.app.bundle_id``
	      - 0xc0000001
	      - Unique identifier for the DDP package loaded in the device. Also
	        referred to as the DDP Track ID. Can be used to uniquely identify
	        the specific DDP package.

Add the type field to the ``fw.app.bundle_id`` row.

Fixes: 410d06879c ("ice: add the DDP Track ID to devlink info")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/84ae28bda1987284033966b7b56a4b27ae40713b.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-10-28 11:41:15 -06:00