Added and documented 3 new message types:
- UNNECESSARY_INT
- UNSPECIFIED_INT
- UNNECESSARY_ELSE
Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com>
Link: https://lore.kernel.org/r/20210925201746.15917-1-utkarshverma294@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

The CONFIG_NO_HZ_IDLE paragraph is using "dyntick-idle mode" before
having defined it while the definition comes a couple of paragraphs
later.

That is leaving the reader with scratching head what that dyntick-idle
mode might be. Pull its definition up so that it is clear.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20210914203355.21360-1-bp@alien8.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/gfp_mask-from-fs-io.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/1d5d5a87d2eceb73b5554c8afb6c79e81b1e0f0e.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/boot-time-mm.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://lore.kernel.org/r/d802b8d0163db57ad326f512eaa48ea3c9e44814.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/genalloc.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/38d8e13b99152d0a8454db675c1c80fb5c640647.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/mm-api.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://lore.kernel.org/r/2c3d01adcdaf9ad393a9cfbb18c34d18afae6ed5.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/unaligned-memory-access.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/4554b1ee13b94f4425141bf586ff8708c70358cf.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/memory-allocation.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/e3d30d816be4404b1bd2c728ec70cd3c2d6e5def.1631846923.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210704181110.9254-1-pali@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Mentioning the current missing information in the pagemap and alternatives
on how to retrieve it, in case someone stumbles upon unexpected behaviour.
Signed-off-by: Tiberiu A Georgescu <tiberiu.georgescu@nutanix.com>
Reviewed-by: Ivan Teterevkov <ivan.teterevkov@nutanix.com>
Reviewed-by: Florian Schmidt <florian.schmidt@nutanix.com>
Reviewed-by: Carl Waldspurger <carl.waldspurger@nutanix.com>
Reviewed-by: Jonathan Davies <jonathan.davies@nutanix.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20210923064618.157046-2-tiberiu.georgescu@nutanix.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

commit message in English, we better not give the Chinese readers a wrong guidance.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/c46432c5801edd44800e679dc34bce95c5e37f85.1632389476.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

- fix a typo.
- modify some word to improve zh_CN/process/5.Posting.rst.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/3adedda2b247be53defc9078104221f00b4c78cd.1632389476.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

   - Improve grammar of zh_CN/process/howto.rst.
   - Resolve potential problems in documentation.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/587fca686d8d7aa828dec2d803bf9f5d59819c57.1632389476.git.siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Translate Documentation/core-api/kref.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20210923095559.983679-1-siyanteng@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

This commit updates SeongJae's email addresses in documents to his
preferred one.
Signed-off-by: SeongJae Park <sj@kernel.org>
Link: https://lore.kernel.org/r/20210917122222.3109-1-sj@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Marvell put CN913x into Octeon TX2 family but they are different from all
other Octeon TX2 products. Instead CN913x is evolution from Armada 7k/8k
products.
Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210919143348.24338-1-pali@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210919143327.24289-1-pali@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

arm64/index is architecture specific.
Move it to the section "特定體系結構文檔" or "Architecture-specific
documentation".
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Fixes: e5cb9494 ("docs/zh_TW: add translations for zh_TW/arm64")
Cc: Hu Haowen <src.res@email.cn>
Link: https://lore.kernel.org/r/53d86385-b4db-5d02-be6b-795900166f17@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Add translation zh_CN/admin-guide/sysrq.rst and link it to
zh_CN/admin-guide/index.rst while clean its todo entry.
Signed-off-by: Junhua Huang <huang.junhua@zte.com.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20210910022531.243882-1-junhuahuangdream@163.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Add a new message type SYMBOLIC_PERMS under the 'Permissions'
subsection. Octal permission bits are easier to read and understand
instead of their symbolic macro names.
Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com>
Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Link: https://lore.kernel.org/r/20210904082330.14864-1-utkarshverma294@gmail.com
[jc: Tweaked wording as suggested by Dwaipayan Ray]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Add a new message type TRAILING_SEMICOLON for the macro definitions
that conclude with a semicolon.
Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com>
Link: https://lore.kernel.org/r/20210904074201.13532-1-utkarshverma294@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Add a new message type SPLIT_STRING under the 'Indentation and Line
Breaks' subsection. Checkpatch documentation for the splitting of
quoted strings that appear in userspace, across multiple lines.
Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com>
Link: https://lore.kernel.org/r/20210904073621.12987-1-utkarshverma294@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

The non-LRU movable flags part is not relevant to above 3 funcitons, so remove
the number 4.
Signed-off-by: Li Xinhai <lixinhai.lxh@gmail.com>

Link: https://lore.kernel.org/r/20210908145215.592325-1-lixinhai.lxh@gmail.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

When discard_max_hw_bytes was introduced, in commit 0034af03
("block: make /sys/block/<dev>/queue/discard_max_bytes writeable"),
the discard_max_bytes documentation section was renamed to
discard_max_hw_bytes, but the references it contains to
discard_max_bytes weren't updated.

This patch refers to discard_max_hw_bytes instead. It also reflows the
paragraph so that sentences end lines.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20210910105142.2116749-1-steve@sk2.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Add a document to the subsystem/maintainer handbook section, which explains
what the tip tree is, how it operates and what rules and expectations it
has.

  [ bp:

   - Add a SPDX identifier, work in most comments from the thread.
   - 9bf19b78 ("Documentation/submitting-patches: Document the SoB
     chain") is also in the main Documentation but I'm leaving the
     paragraph here because it has the proper structure - text talks about
     SoBs and referencing somewhere else would interrupt the flow.
   - Move backtraces in changelogs to main submitting-patches.rst.
   - "Patch version information" is explained to a great detail in
     submitting-patches.rst too.
   - Hyperlink resend reminders section.
  ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Link: https://lkml.kernel.org/r/20181107171149.165693799@linutronix.de
Link: https://lore.kernel.org/r/20210913153942.15251-3-bp@alien8.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

General rules for patch submission, coding style and related details are
available, but most subsystems have their subsystem-specific extra rules
which differ or go beyond the common rules.

Mark suggested to add a subsystem/maintainer handbook section, where
subsystem maintainers can explain their specific quirks.

Add the section and link to it from the submitting-patches document.

  [ bp: Add a SPDX identifier. ]
Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20181107171149.074948887@linutronix.de
Link: https://lore.kernel.org/r/20210913153942.15251-2-bp@alien8.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Merge tag 'perf-tools-for-v5.15-2021-09-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Add missing fields and remove some duplicate fields when printing a
   perf_event_attr.

 - Fix hybrid config terms list corruption.

 - Update kernel header copies, some resulted in new kernel features
   being automagically added to 'perf trace' syscall/tracepoint argument
   id->string translators.

 - Add a file generated during the documentation build to .gitignore.

 - Add an option to build without libbfd, as some distros, like Debian
   consider its ABI unstable.

 - Add support to print a textual representation of IBS raw sample data
   in 'perf report'.

 - Fix bpf 'perf test' sample mismatch reporting

 - Fix passing arguments to stackcollapse report in a 'perf script'
   python script.

 - Allow build-id with trailing zeros.

 - Look for ImageBase in PE file to compute .text offset.

* tag 'perf-tools-for-v5.15-2021-09-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (25 commits)
  tools headers UAPI: Update tools's copy of drm.h headers
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools headers UAPI: Sync linux/fs.h with the kernel sources
  tools headers UAPI: Sync linux/in.h copy with the kernel sources
  perf tools: Add an option to build without libbfd
  perf tools: Allow build-id with trailing zeros
  perf tools: Fix hybrid config terms list corruption
  perf tools: Factor out copy_config_terms() and free_config_terms()
  perf tools: Fix perf_event_attr__fprintf() missing/dupl. fields
  perf tools: Ignore Documentation dependency file
  perf bpf: Provide a weak btf__load_from_kernel_by_id() for older libbpf versions
  tools include UAPI: Update linux/mount.h copy
  perf beauty: Cover more flags in the  move_mount syscall argument beautifier
  tools headers UAPI: Sync linux/prctl.h with the kernel sources
  tools include UAPI: Sync sound/asound.h copy with the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
  perf report: Add support to print a textual representation of IBS raw sample data
  perf report: Add tools/arch/x86/include/asm/amd-ibs.h
  perf env: Add perf_env__cpuid, perf_env__{nr_}pmu_mappings
  ...

Pull compiler attributes updates from Miguel Ojeda:

 - Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 (Marco Elver)

 - Add Nick as Reviewer for compiler_attributes.h (Nick Desaulniers)

 - Move __compiletime_{error|warning} (Nick Desaulniers)

* tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux:
  compiler_attributes.h: move __compiletime_{error|warning}
  MAINTAINERS: add Nick as Reviewer for compiler_attributes.h
  Compiler Attributes: fix __has_attribute(__no_sanitize_coverage__) for GCC 4

Pull auxdisplay updates from Miguel Ojeda:
 "An assortment of improvements for auxdisplay:

   - Replace symbolic permissions with octal permissions (Jinchao Wang)

   - ks0108: Switch to use module_parport_driver() (Andy Shevchenko)

   - charlcd: Drop unneeded initializers and switch to C99 style (Andy
     Shevchenko)

   - hd44780: Fix oops on module unloading (Lars Poeschel)

   - Add I2C gpio expander example (Ralf Schlatterbeck)"

* tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux:
  auxdisplay: Replace symbolic permissions with octal permissions
  auxdisplay: ks0108: Switch to use module_parport_driver()
  auxdisplay: charlcd: Drop unneeded initializers and switch to C99 style
  auxdisplay: hd44780: Fix oops on module unloading
  auxdisplay: Add I2C gpio expander example

Pull CPU hotplug updates from Thomas Gleixner:
 "Updates for the SMP and CPU hotplug:

   - Remove DEFINE_SMP_CALL_CACHE_FUNCTION() which is a left over of the
     original hotplug code and now causing trouble with the ARM64 cache
     topology setup due to the pointless SMP function call.

     It's not longer required as the hotplug callbacks are guaranteed to
     be invoked on the upcoming CPU.

   - Remove the deprecated and now unused CPU hotplug functions

   - Rewrite the CPU hotplug API documentation"

* tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation: core-api/cpuhotplug: Rewrite the API section
  cpu/hotplug: Remove deprecated CPU-hotplug functions.
  thermal: Replace deprecated CPU-hotplug functions.
  drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()

Merge tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull misc driver fix from Greg KH:
 "Here is a single patch for 5.15-rc1, for the lkdtm misc driver.

  It resolves a build issue that many people were hitting with your
  current tree, and Kees and others felt would be good to get merged
  before -rc1 comes out, to prevent them from having to constantly hit
  it as many development trees restart on -rc1, not older -rc releases.

  It has NOT been in linux-next, but has passed 0-day testing and looks
  'obviously correct' when reviewing it locally :)"

* tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  lkdtm: Use init_uts_ns.name instead of macros

Pull IPMI updates from Corey Minyard:
 "A couple of very minor fixes for style and rate limiting.

  Nothing big, but probably needs to go in"

* tag 'for-linus-5.15-1' of git://github.com/cminyard/linux-ipmi:
  char: ipmi: use DEVICE_ATTR helper macro
  ipmi: rate limit ipmi smi_event failure message

Pull scheduler fixes from Borislav Petkov:

 - Make sure the idle timer expires in hardirq context, on PREEMPT_RT

 - Make sure the run-queue balance callback is invoked only on the
   outgoing CPU

* tag 'sched_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Prevent balance_push() on remote runqueues
  sched/idle: Make the idle timer expire in hard interrupt context

Pull locking fixes from Borislav Petkov:

 - Fix the futex PI requeue machinery to not return to userspace in
   inconsistent state

 - Avoid a potential null pointer dereference in the ww_mutex deadlock
   check

 - Other smaller cleanups and optimizations

* tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rtmutex: Fix ww_mutex deadlock check
  futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()
  futex: Avoid redundant task lookup
  futex: Clarify comment for requeue_pi_wake_futex()
  futex: Prevent inconsistent state and exit race
  futex: Return error code instead of assigning it without effect
  locking/rwsem: Add missing __init_rwsem() for PREEMPT_RT

Pull timer fix from Borislav Petkov:

 - Handle negative second values properly when converting a timespec64
   to nanoseconds.

* tag 'timers_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time: Handle negative seconds correctly in timespec64_to_ns()

Pull namei updates from Al Viro:
 "Clearing fallout from mkdirat in io_uring series. The fix in the
  kern_path_locked() patch plus associated cleanups"

* 'misc.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  putname(): IS_ERR_OR_NULL() is wrong here
  namei: Standardize callers of filename_create()
  namei: Standardize callers of filename_lookup()
  rename __filename_parentat() to filename_parentat()
  namei: Fix use after free in kern_path_locked

Pull smbfs updates from Steve French:
 "cifs/smb3 updates:

   - DFS reconnect fix

   - begin creating common headers for server and client

   - rename the cifs_common directory to smbfs_common to be more
     consistent ie change use of the name cifs to smb (smb3 or smbfs is
     more accurate, as the very old cifs dialect has long been
     superseded by smb3 dialects).

  In the future we can rename the fs/cifs directory to fs/smbfs.

  This does not include the set of multichannel fixes nor the two
  deferred close fixes (they are still being reviewed and tested)"

* tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: properly invalidate cached root handle when closing it
  cifs: move SMB FSCTL definitions to common code
  cifs: rename cifs_common to smbfs_common
  cifs: update FSCTL definitions

Pull virtio updates from Michael Tsirkin:

 - vduse driver ("vDPA Device in Userspace") supporting emulated virtio
   block devices

 - virtio-vsock support for end of record with SEQPACKET

 - vdpa: mac and mq support for ifcvf and mlx5

 - vdpa: management netlink for ifcvf

 - virtio-i2c, gpio dt bindings

 - misc fixes and cleanups

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (39 commits)
  Documentation: Add documentation for VDUSE
  vduse: Introduce VDUSE - vDPA Device in Userspace
  vduse: Implement an MMU-based software IOTLB
  vdpa: Support transferring virtual addressing during DMA mapping
  vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap()
  vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()
  vhost-iotlb: Add an opaque pointer for vhost IOTLB
  vhost-vdpa: Handle the failure of vdpa_reset()
  vdpa: Add reset callback in vdpa_config_ops
  vdpa: Fix some coding style issues
  file: Export receive_fd() to modules
  eventfd: Export eventfd_wake_count to modules
  iova: Export alloc_iova_fast() and free_iova_fast()
  virtio-blk: remove unneeded "likely" statements
  virtio-balloon: Use virtio_find_vqs() helper
  vdpa: Make use of PFN_PHYS/PFN_UP/PFN_DOWN helper macro
  vsock_test: update message bounds test for MSG_EOR
  af_vsock: rename variables in receive loop
  virtio/vsock: support MSG_EOR bit processing
  vhost/vsock: support MSG_EOR bit processing
  ...

Pull more RISC-V updates from Palmer Dabbelt:

 - A pair of defconfig additions, for NVMe and the EFI filesystem
   localization options.

 - A larger address space for stack randomization.

 - A cleanup to our install rules.

 - A DTS update for the Microchip Icicle board, to fix the serial
   console.

 - Support for build-time table sorting, which allows us to have
   __ex_table read-only.

* tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Move EXCEPTION_TABLE to RO_DATA segment
  riscv: Enable BUILDTIME_TABLE_SORT
  riscv: dts: microchip: mpfs-icicle: Fix serial console
  riscv: move the (z)install rules to arch/riscv/Makefile
  riscv: Improve stack randomisation on RV64
  riscv: defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1
  riscv: defconfig: enable BLK_DEV_NVME