The unit mentioned in the documentation of scheduler statistics is
outdated which may mislead the readers.

The unit of statistics that is reported by /proc/schedstat is modified
to nanosecond, and the unit of statistics that is reported by
/proc/PID/schedstat is provided as well to make the context consistent.

The rq_cpu_time and the rq_sched_info.run_delay of a run queue, and the
sched_info.run_delay of a task are all updated based on the clock of the
run queue, while the se.sum_exec_runtime of a task is updated based on
the clock_task of the run queue of the task. Both the clock and
clock_task are relied on the return value of the function sched_clock()
which is in the unit of nanosecond.
Signed-off-by: Jui-Tse Huang <juitse.huang@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Alphabetize several of the kernel boot parameters in
kernel-parameters.txt.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Move some out-of-place kernel parameters into their correct
locations.

Move one out-of-order keyword/legend in kernel-parameters.rst.

Add some missing keyword legends in kernel-parameters.rst:
  HIBERNATION HYPER_V
and drop some obsolete/removed keyword legends:
 EIDE IOSCHED OSS TS XT

Correct the location of the setup.h file.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Clean up some of admin-guide/kernel-parameters.txt:

a. "smt" should be "smt=" (S390)
b. (dropped)
c. Sparc supports the vdso= boot option
d. make the tp_printk options (2) formatting similar to other options
   by adding spacing
e. add "trace_clock=" with a reference to Documentation/trace/ftrace.rst
f. use [IA-64] as documented instead of [ia64]
g. fix formatting and text for test_suspend=
h. fix formatting for swapaccount=
i. fix formatting and grammar for video.brightness_switch_enabled=
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-ia64@vger.kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: linux-pm@vger.kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

x86 EFI earlyprink was removed with commit 69c1f396 ("efi/x86:
Convert x86 EFI earlyprintk into generic earlycon implementation").
Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

ignore-gfp-wait and ignore-gfp-highmem defaults are actually true (Y) in
both failslab and fail_page_alloc, not false as the docs suggest. See
page_alloc.c:3762 and failslab.c:13

At the same time use 'Y' instead of '1' in the example scripts just for
consistency. (though 1 would work)
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

All page title headings in arch_pgtable_helpers.txt except
"Architecture Page Table Helpers" should have been subheadings instead.

Demote them to chapter headings.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Correct the url of linux-next
Signed-off-by: Zhou Yuheng <woshoxxx@gmail.com>
Reviewed-by: Alex Shi <alexs@kernel.org>
Acked-by: Tang Yizhou <tangyizhou@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/hugetlbfs_reserv.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

In the current implementation, cpu_time and rq_time should be
in nanoseconds, so this document needs to be modified.
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate locking/spinlocks.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate locking/index.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate scheduler/schedutil.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate scheduler/sched-debug.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Since commit 91eeafea ("x86/entry: Switch page fault exception to
IDTENTRY_RAW"), the function name of the page fault handler is out of date.
And because of commit aa37c51b ("x86/mm: Break out user address space
handling"), the description of search_exception_table is not correct
anymore. It may mislead the user who wants to use the documentation to
figure out the page fault handler.

Also, fix typo and add the parentheses after function and macro name.
Signed-off-by: Chin En Lin <shiyn.lin@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

w1_therm driver supports now MAX31850, too. Add it to documentation
and fix a small typo.
Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

With Grant taking a prominent role in Linaro, I will take over as the
process ambassador for ARM w.r.t. embargoed hardware issues.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Grant Likely <grant.likely@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/zsmalloc.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/z3fold.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/split_page_table_lock.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/remap_file_pages.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/page_table_check.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/page_owner.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/page_frags.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/overcommit-accounting.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/mmu_notifier.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/memory-model.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/hwpoison.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Translate .../vm/_free_page_reporting.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

The word in original doc is: 'enabled', not 'enable'.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Since 3d029480f24e("Docs/admin-guide/mm/damon/usage: document DAMON sysfs
interface") add sysfs interface, let's sync update.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Since 072fd1b47215("Docs/damon: update outdated term 'regions update interval'")
use update interval,zh_CN should use 更新间隔, so let's sync update.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Replace first chapter heading ("Introduction") with page title named
"Using Sphinx for kernel documentation". This way, the first-level TOC
for doc-guide contains title instead of chapter headings for this page.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Promote "Writing kernel-doc comments" heading to page title, in
accordance to kernel documentation guidelines. Also promote "Including
kernel-doc comments" heading because both headings deserve their own
chapters in PDF output.

There is no differences in the resulting output except formatting
semantics.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Rusty's kernel-hacking guides provide important information, however
they are written in a narrative style that some readers may interpret as
off-putting. Since the goal is to make kernel documentation accessible
to as many new developers as possible, it's best to avoid the turns of
phrase that require a specific cultural context to properly understand.
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Enhance the static analysis tools section with a discussion on when to
use each of them.

This was mainly taken from Dan Carpenter and Julia Lawall's comments on
a previous documentation patch for static analysis tools.

Lore: https://lore.kernel.org/linux-doc/20220329090911.GX3293@kadam/T/#mb97770c8e938095aadc3ee08f4ac7fe32ae386e6Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Acked-by: David Gow <davidgow@google.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Complement the Kernel Testing Guide documentation page by adding a
section about static analysis tools.
Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Acked-by: Daniel Latypov <dlatypov@google.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Julia Lawall <julia.lawall@inria.fr>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Using a substitution pattern of "|copy|" without including
isonum.txt causes a doc build warning.

Using the symbol "©" itself is a better choice for those
who read .rst sources.

Reported by: Randy Dunlap <rdunlap@infradead.org>

Fixes: 16c02447 ("Documentation: thermal: DPTF Documentation")
Suggested-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Extend the "Respond to review comments" section of "Submitting patches"
with reference to patch changelogs.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>