Commit Graph

1426975 Commits

Author SHA1 Message Date
Daniel Tang
cae0e1bbde docs: path-lookup: fix unrenamed WALK_GET
The symbol WALK_GET does not appears in the codebase as of
0031c06807. It was renamed as of 8f64fb1cce. A previous
documentation update, de9414adaf, renamed one occurrence in
path-lookup.rst, but forgot to change another occurrence later in the
file.

Fixes: de9414adaf ("docs: path-lookup: update WALK_GET, WALK_PUT desc")
Signed-off-by: Daniel Tang <danielzgtg.opensource@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <13011949.O9o76ZdvQC@daniel-desktop3>
2026-03-22 14:54:23 -06:00
Julia Lawall
1173763940 coccinelle: update Coccinelle URL
The LIP6 URL no longer functions.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260310121431.362091-1-Julia.Lawall@inria.fr>
2026-03-22 14:52:38 -06:00
Thorsten Leemhuis
9d43740074 docs: reporting-issues: create a proper appendix explaining specialties
Merge "Why some bugs remain unfixed and some reports are ignored" with
the closing words while rewriting and extending the text.

The result spends fewer words on explaining things that are normal in
FLOSS -- while outlining where the kernel is different and how that
makes bug reporting more complicated than in other FLOSS projects.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <473b36fa9723c46b7167004752f097e6c26d7278.1773750701.git.linux@leemhuis.info>
2026-03-22 14:47:53 -06:00
Thorsten Leemhuis
a9a1c262df docs: verify-bugs-… and quickly-build-…: improve feedback section
Mention sending patches in the section about feedback. This syncs them
with a section a earlier patch added to reporting-issues.rst, which
was based on these sections and improved during review.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <cb219ccd15271bfb99ecce01dcbdbb03cccd7be1.1773750701.git.linux@leemhuis.info>
2026-03-22 14:47:53 -06:00
Thorsten Leemhuis
ceee0f73c3 docs: reporting-issues: add conclusion to the step-by-step guide
Text based on a section
Documentation/admin-guide/verify-bugs-and-bisect-regressions.rst
and slightly improved after review feedback.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <bc18f678b6854879dc7691ecbb762d717da4baa3.1773750701.git.linux@leemhuis.info>
2026-03-22 14:47:53 -06:00
Thorsten Leemhuis
83aa754da4 docs: reporting-issues: tweak the reference section intro
Fine tuning to the intro of the reference section:

* Call the step-by-step guide what it is.
* Reorder the links to the guides on bug reporting to first mention the
  most modern one.
* Many small changes to streamline the text and slightly shorten it.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <cd3ae7b1724d3b16b86488166f756a976e0ee83a.1773750701.git.linux@leemhuis.info>
2026-03-22 14:47:53 -06:00
Thorsten Leemhuis
c423d3295a docs: reporting-issues: mention text is best viewed rendered
Add a comment before the step-by-step guide explaining that the document
is best viewed in the rendered form, as there the internal links will
work that later patches will add.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f8e3577df4a231b66e8f638f7b41614bf15b49ab.1773750701.git.linux@leemhuis.info>
2026-03-22 14:47:53 -06:00
Daniel Castro
a0529bbe70 docs: pt_BR: translate process/1.Intro.rst
Add Brazilian Portuguese translation of the development process
introduction (Documentation/process/1.Intro.rst), covering the
executive summary, importance of mainline code, and licensing.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Daniel Castro <arantescastro@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260317140136.29256-1-arantescastro@gmail.com>
2026-03-22 14:45:44 -06:00
Daniel Pereira
98b764fd72 docs/pt_BR: translation of maintainer-soc-clean-dts.rst
Translate Documentation/process/maintainer-soc-clean-dts.rst into Portuguese.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260319115416.495020-3-danielmaraboo@gmail.com>
2026-03-22 14:42:08 -06:00
Daniel Pereira
a39b136f67 docs/pt_BR: translation of maintainer-soc.rst
Translate Documentation/process/maintainer-soc.rst into Portuguese.
This is part of the effort to localize the kernel documentation.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260319115416.495020-2-danielmaraboo@gmail.com>
2026-03-22 14:42:08 -06:00
Manuel Ebner
98e7b57528 scripts: ver_linux: expand and fix list
It is a pain in the ass to compare the software versions on the running
system (scripts/ver_linux) with the minimal required versions.
Sorting both lists the same way makes side-by-side comparisons a simple task.

fix path to changes.rst

make toolnames uniform with the toolnames in Changes.rst
make version commands uniform with Changes.rst

Add missing tools in ver_linux
 bash, bc, bindgen, btrfs-progs, Clang, gdb,  GNU awk, GNU tar,
 GRUB, GRUB2, gtags, iptables, kmod, mcelog, mkimage, openssl,
 pahole, Python, Rust, Sphinx, squashfs-tools

Signed-off-by: Manuel Ebner <manuelebner@airmail.cc>
Message-ID: <20260311165440.183672-2-manuelebner@airmail.cc>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2026-03-17 08:57:58 -06:00
Daniel Pereira
c991b7ef2f docs: pt_BR: add netdev and maintainer handbook translations
Add the Brazilian Portuguese translation for the netdev subsystem
process and update the maintainer handbook to include it.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260312122425.19577-1-danielmaraboo@gmail.com>
2026-03-17 08:54:03 -06:00
Kuan-Wei Chiu
97b5266dac docs: interconnect: Document consumer APIs and drop outdated text
The documentation currently states that consumer interfaces are not
documented, which is no longer true.

Remove the outdated claim and include the existing kernel-doc from
drivers/interconnect/core.c (filtered for consumer APIs) and
drivers/interconnect/bulk.c.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260312175341.2944154-3-visitorckw@gmail.com>
2026-03-17 08:51:28 -06:00
Kuan-Wei Chiu
6f600f9972 docs: interconnect: Add provider APIs to documentation
The "Interconnect providers" section currently only includes data
structures from include/linux/interconnect-provider.h.

Include drivers/interconnect/core.c to extract provider-specific
API documentation. The :functions: directive is used to prevent
mixing with consumer APIs.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260312175341.2944154-2-visitorckw@gmail.com>
2026-03-17 08:51:28 -06:00
Ricardo Ungerer
9b4e099c22 jobserver: Fix typo in docstring
This commit fixes small typos in the docstring of jobserver.py.

Signed-off-by: Ricardo Ungerer <ungerer.ricardo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260316220218.568022-1-ungerer.ricardo@gmail.com>
2026-03-17 08:43:39 -06:00
Praveen Kumar Singh
d0eab64faf docs: memory-hotplug: fix typo 'fo' -> 'for' in NODE_ADDED_FIRST_MEMORY description
The description of NODE_ADDED_FIRST_MEMORY notification contains
a missing 'r' in the word 'for'. Fix the typo.

Signed-off-by: Praveen Kumar Singh <pr4veensingh@proton.me>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <by7jSPCep0WcWKD6nntH0wGbcN59hRhsEOc2lHBps2QizxRtedH25CdW8DO33YiqJU3Y7kGWesJnBts-jvgMzNqDvLWH3cTDYpJPuNed9hU=@proton.me>
2026-03-17 08:42:05 -06:00
h3288824963
04c612f6d7 Documentation: printk: Add section about avoiding lockups
Add a section 'Avoiding lockups from excessive printk() use' to
printk-basics.rst, explaining the risk of calling printk() in hot paths
with legacy consoles and suggesting alternatives.

The section covers:
- Rate-limited and one-time printing variants
- Log level filtering
- printk_deferred() for legacy consoles
- Porting to nbcon API (preferred solution)
- Using tracepoints for permanent debugging

This documentation is relevant only for legacy console drivers and
!PREEMPT_RT kernels.

Suggested-by: Petr Mladek <pmladek@suse.com>
Suggested-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: h3288824963 <3288824963@qq.com>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <tencent_FB5B7DCFFB10BCDE325397D1202226779D09@qq.com>
2026-03-17 08:37:49 -06:00
Ariful Islam Shoikot
5e6df46dff Documentation/mm/hwpoison.rst: fix typos and grammar.
Signed-off-by: Ariful Islam Shoikot <islamarifulshoikat@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260317120614.51046-1-islamarifulshoikat@gmail.com>
2026-03-17 08:35:27 -06:00
Jonathan Corbet
73f175a463 Merge branch 'mauro' into docs-mw
Mauro says:

The first patches on this series are focused mostly on .TH
(troff header) line, but, as a side effect, it also change
the name of man pages generated from DOC kernel-doc annotations.
At the previous state, those were overriden due to lots of
duplicated names.

The rationale for most of such changes is that modern troff/man
page specs say that .TH has up to 5 arguments,, as defined at [1]:

       .TH topic section [footer-middle] [footer-inside] [header-middle]

[1] https://man7.org/linux/man-pages/man7/groff_man_style.7.html

Right now, Kernel uses 6 arguments, probably due to some legacy
man page definitions.

After double checking, modern man pages use this format:

	.TH "{name}" {section} "{date}" "{modulename}" "{manual}"

Right now, man pages generation are messing up on how it encodes
each position at .TH, depending on the type of object it emits.

After this series, the definition is more consistent and file
output is better named.

It also fixes two issues at sphinx-build-wrapper related to how
it generate files names from the .TH header.

The last 4 patches on this series are new: they fix lots of issues
related to groff format: there, new lines continue the test from
previous pagragraph. This cause issues mainly on:

- tables;
- code blocks;
- lists

With the changes, the output now looks a lot better.

Please notice that the code there is not meant to fully implement
rst -> troff/groff conversion. Instead, it is meant to make the
output reasonable.

A more complete approach would be to use docutils or Sphinx
libraries, but that would likely require to also write a troff
output plugin, as the "man" builder is very limited. Also,
this could be problematic, as kernel-doc classes can be called
from Sphinx. I don't think we need that much complexity, as what
we mainly need is to avoid bad line grouping when generating
man pages.

This series should not affect HTML documentation. It only affect
man page generation and ManFormat output class.
2026-03-09 10:38:27 -06:00
Mauro Carvalho Chehab
ab9150972f docs: kdoc_output: better handle lists
On several functions, the return values are inside a bullet
list. Also, on some places, there are numbered lists as well.

Use a troff markup to format them, to avoid placing everything
on a single line.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <edea87623550a51086c23c9af0edc5e9fcce0ed6.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:39 -06:00
Mauro Carvalho Chehab
908ae13b18 docs: kdoc_output: add support to handle code blocks
It is common to have code blocks inside kernel-doc markups.
By default, troff will group all lines altogether, producing a
very weird output. If a code block is detected by disabling
filling inside code blocks, re-enabling it afterwards.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <fb6f16ad345f7ec1b1ebe4c5ec7ea3d9cd6de4fb.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:39 -06:00
Mauro Carvalho Chehab
4ec130cff6 docs: kdoc_output: add a logic to handle tables inside kernel-doc markups
specially when DOC is used, it is not uncommon to have tables
inside a kernel-doc markup.

Add support for simple tables and complex grid tables when output
in groff format.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <442ad76442c325044eb9f34a155d5f484341fb35.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
cde7c96f88 docs: kdoc_output: Change the logic to handle man highlight
The code inside ManFormat code to output man pages is too simple:
it produces very bad results when the content has tables or code
blocks.

Change the way lines are parsed there to allow adding extra
logic to handle some special cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <6ae2301a40b3fcb4381dd9dda8c75d14f9616b46.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
e4dadcf510 docs: kdoc_output: pick a better default for modulename
Instead of placing the same data for modulename for all generated
man pages, use the directory from the filename used to produce
kernel docs as basis.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <8a5d91c93c0b9b34c2f60e389f4464742804d0d6.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
26b4fdefc0 docs: kdoc_output: describe the class init parameters
As this class is part of the ABI used by both Sphinx kerneldoc
extension and docs/tools/kernel-doc, better describe what
parmeters are used to initialize ManOutput class.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <7c57f26150aae11fced259f30898a980b96efb68.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
4160533d05 docs: kdoc_output: fix naming for DOC markups
Right now, DOC markups aren't being handled properly, as it was
using the same name for all output.

Fix it by filling the title argument on a different way.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <11d809e5c4bec23240d3ace3f342dbb2a9263446.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
1a63342a27 docs: kdoc_output: don't use a different modulename for functions
It doesn't make much sense to have a different modulename just
for functions, but not for structs/enums/...

Use the same header everywere.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <978259bdf3e8d310c646ecf76ce56d054f6d5738.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
31938f120f docs: kdoc_output: use a single manual for everything
There's no reason why functions will be on a different manual.
Unify its name, calling it as "Kernel API Manual".

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <000e1174a551e97ad4710ad4f3750b22017bedd5.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
43874045fa docs: kdoc_output: remove extra attribute on man .TH headers
According with modern documents, groff .TH supports up to 5
arguments, but the logic passes 6. Drop the lastest one
("LINUX").

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f5e480af877903b0596b6a56ef7a152eb8a10dbf.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
c1873e7743 docs: kdoc_output: use a method to emit the .TH header
All man emit functions need to add a .TH header. Move the code
to a common function, as we'll be addressing some issues at
the common code.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <2e55fcfe8724fde08a78635a1a3f8b449a6adf82.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
0e4c8adad4 docs: sphinx-build-wrapper: don't allow "/" on file names
When handling "DOC:" sections, slash characters may be there.
Prevent using it at the file names, as this is used for directory
separator.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c1a83a50b0659a5bcf68ef14f9457cc188e91e3a.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
5828d35647 docs: sphinx-build-wrapper: better handle troff .TH markups
Using a regular expression to match .TH is problematic, as it
doesn't handle well quotation marks.

Use shlex instead.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <9436806316d33aaf68625c00ce068463d3917660.1772810752.git.mchehab+huawei@kernel.org>
2026-03-09 10:34:38 -06:00
Mauro Carvalho Chehab
0d3ab0e4bb docs: kdoc_files: document KernelFiles() ABI
The KernelFiles is the main entry point to run kernel-doc,
being used by both tools/docs/kernel-doc and
Documentation/sphinx/kerneldoc.py.

It is also used on QEMU, which also uses the kernel-doc
libraries from tools/lib/python/kdoc.

Properly describe its ABI contract.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <13eb44c341232564eaf2a9c9de4782369fef57e1.1772810574.git.mchehab+huawei@kernel.org>
2026-03-09 10:23:20 -06:00
Mauro Carvalho Chehab
861dcdb6ad docs: kdoc_files: allows the caller to use a different xforms class
While the main goal for kernel-doc is to be used inside the Linux
Kernel, other open source projects could benefit for it. That's
currently the case of QEMU, which has a fork, mainly due to two
reasons:

  - they need an extra C function transform rule;
  - they handle the html output a little bit different.

Add an extra optional argument to make easier for the code to be
shared, as, with that, QEMU can just create a new derivated class
that will contain its specific rulesets, and just copy the
remaining kernel-doc files as-is.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <6b274ddbdcd9d438c6848e00e410a2f65ef80ec2.1772810574.git.mchehab+huawei@kernel.org>
2026-03-09 10:23:20 -06:00
Tommaso Cucinotta
b8e7e03370 sched/deadline: document new sched_getattr() feature for retrieving current parameters for DEADLINE tasks
Document in Documentation/sched/sched-deadline.rst the new capability of
sched_getattr() to retrieve, for DEADLINE tasks, the runtime left and absolute
deadline (setting the flags syscall parameter to 1), in addition to the static
parameters (obtained with flags=0).

Signed-off-by: Tommaso Cucinotta <tommaso.cucinotta@santannapisa.it>
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260304102843.1373905-2-tommaso.cucinotta@santannapisa.it>
2026-03-09 10:16:47 -06:00
David Hildenbrand (Arm)
17eb360d7d docs: filesystems: clarify KernelPageSize vs. MMUPageSize in smaps
There was recently some confusion around THPs and the interaction with
KernelPageSize / MMUPageSize. Historically, these entries always
correspond to the smallest size we could encounter, not any current
usage of transparent huge pages or larger sizes used by the MMU.

Ever since we added THP support many, many years ago, these entries
would keep reporting the smallest (fallback) granularity in a VMA.

For this reason, they default to PAGE_SIZE for all VMAs except for
VMAs where we have the guarantee that the system and the MMU will
always use larger page sizes. hugetlb, for example, exposes a custom
vm_ops->pagesize callback to handle that. Similarly, dax/device
exposes a custom vm_ops->pagesize callback and provides similar
guarantees.

Let's clarify the historical meaning of KernelPageSize / MMUPageSize,
and point at "AnonHugePages", "ShmemPmdMapped" and "FilePmdMapped"
regarding PMD entries.

While at it, document "FilePmdMapped", clarify what the "AnonHugePages"
and "ShmemPmdMapped" entries really mean, and make it clear that there
are no other entries for other THP/folio sizes or mappings.

Also drop the duplicate "KernelPageSize" and "MMUPageSize" entries in
the example.

Link: https://lore.kernel.org/all/20260225232708.87833-1-ak@linux.intel.com/
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260306081916.38872-1-david@kernel.org>
2026-03-09 10:13:51 -06:00
Ariful Islam Shoikot
73f29b02e7 Documentation/mm: Fix typo in NUMA paragraph
Fixed a typo in Documentation/mm/numa.rst:
-changed 'allocated' to 'allocate' in the paragraph about
memoryless nodes.

Signed-off-by: Ariful Islam Shoikot <islamarifulshoikat@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260307114006.33183-1-islamarifulshoikat@gmail.com>
2026-03-09 10:11:35 -06:00
LIU Haoyang
4fe1e1dcca docs/dev-tools: fix a broken URL in dev-tools/coccinelle.rst
The original supplemental documentation for coccicheck is
https://bottest.wiki.kernel.org/coccicheck, which redirects to a not found page,
thus change it to https://bottest.wiki.kernel.org/coccicheck.html,
which adds a suffix to original URL to make it direct to the right page.

Signed-off-by: LIU Haoyang <tttturtleruss@gmail.com>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260308100851.341-1-tttturtleruss@gmail.com>
2026-03-09 10:10:24 -06:00
Haoyang LIU
fcbf51dd16 tools/docs/checktransupdate.py: add support for scanning directory
Origin script can only accept a file as parameter, this commit enables
it to scan a directory.

Usage example:
./scripts/checktransupdate.py Documentation/translations/zh_CN/dev-tools

And it will output something like:
"""
[1772967203.351603] Documentation/translations/zh_CN/dev-tools/kmemleak.rst
[1772967205.074201] commit 7591c127f3 ("kmemleak: iommu/iova: fix transient kmemleak false positive")
[1772967205.074337] 1 commits needs resolving in total

[1772967205.301705] Documentation/translations/zh_CN/dev-tools/index.rst
[1772967206.912395] commit a592a36e49 ("Documentation: use a source-read extension for the index link boilerplate")
[1772967206.921424] commit 6eac13c876 ("Documentation: dev-tools: add container.rst page")
[1772967206.930220] commit 8f32441d7a ("Documentation: Add documentation for Compiler-Based Context Analysis")
[1772967206.939002] commit 1e9ddbb2cd ("docs: Pull LKMM documentation into dev-tools book")
[1772967206.948636] commit d5af79c05e ("Documentation: move dev-tools debugging files to process/debugging/")
[1772967206.957562] commit d5dc958361 ("kbuild: Add Propeller configuration for kernel build")
[1772967206.966255] commit 315ad8780a ("kbuild: Add AutoFDO support for Clang build")
[1772967206.966410] 7 commits needs resolving in total
"""

Signed-off-by: Haoyang LIU <tttturtleruss@gmail.com>
[jc: tweaked coding style]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260308111314.27333-1-tttturtleruss@gmail.com>
2026-03-09 10:06:22 -06:00
Ryan Cheevers
1722b500d2 docs: fix typo in housekeeping
Signed-off-by: Ryan Cheevers <cheeversr0@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260309060015.2349939-1-cheeversr0@gmail.com>
2026-03-09 09:55:08 -06:00
Thorsten Leemhuis
d20e945e9f docs: handling-regressions: add, trim, and sort quotes from Linus
Add additional quotes from Linus while trimming the existing ones and
sorting them all into categories. That makes it easier for new
developers and maintainers to look up how Linus expects certain
situations wrt regressions to be handled. The earlier sections in the
document already explain this, but those parts are often questioned --
or not considered authoritative at all and plainly ignored. Having it
straight from the horse's mouth helps get everyone on the same page,
even if that makes the document quite a bit longer (the raw line count
of this section doubles, but the number of characters increases by
nearly 50%). In return, this covers a lot more aspects and, due to the
sub-headings, is easier to navigate.

In contrast to the more neutral description in the early sections of the
document, this also provides a better insight into how serious Linus is
about the "no regressions" rule and how he wants it to be interpreted in
practice; this makes it easier for new developers and maintainers to
understand things and prevent run-ins with higher-level maintainers.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c825d7981e1badb22d15f3f6fc9c95001a017f09.1771833924.git.linux@leemhuis.info>
2026-03-03 11:11:01 -07:00
Matteo Martelli
2b8060418d sched_deadline, docs: fix cpuset example for cgroupv2
Documenation/scheduler/sched-deadline.rst provides two examples for how
to setup cgroup and cpuset for deadline tasks: one for cgroup v1 and one
cgroup v2. The code block in the latter is not properly html rendered as
the :: marker is missing.

Add the :: marker before the code block for the cgroup v2 example to fix
html rendering.

Also make the example description more explicit for better clarity.

Fixes: 0116765035 ("sched_deadline, docs: add affinity setting with cgroup2 cpuset controller")
Signed-off-by: Matteo Martelli <matteo.martelli@codethink.co.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260223-docs-sched-deadline-fix-example-v1-1-8d0bedc2bc6f@codethink.co.uk>
2026-03-03 10:59:08 -07:00
Jonathan Corbet
e0bb430d3e Merge branch 'mauro' into docs-mw
The changes here basically addresses several issues discoverd by
Randy and by me and makes NestedMatch more similar to KernRe.

It also moves the transforms ruleset to a separate file, to make
easier to maintain kernel-doc code.
2026-03-03 10:54:28 -07:00
Mauro Carvalho Chehab
85c2a51357 docs: kdoc_parser: move nested match transforms to xforms_lists.py
As NestedMatch now has a sub method and a declaration close to
what KernRe does, we can move the rules to xforms_lists and
simplify kdoc_parser a little bit.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <762ce2a58ff024c1b0b6f6a6e05020d1415b8308.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Mauro Carvalho Chehab
fc44c0a0b2 docs: kdoc_re: make NestedMatch use KernRe
Instead of using re_compile, let's create the class with the
regex and use KernRe to keep it cached.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <cdf900faf0ed8a08f8c6ac1db5a43342968c0739.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Mauro Carvalho Chehab
34503b5fd1 docs: kdoc_re: Change NestedMath args replacement to \0
Future patches will allow parsing each argument instead of the
hole set. Prepare for it by changing the replace all args from
\1 to \0.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <46e383118be9d9e432e3814fe819ebb12261d7b4.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Mauro Carvalho Chehab
962bdc440d docs: kdoc_re: don't recompile NestedMatch regex every time
Store delimiters and its regex-compiled version as const vars.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <0cf2b72d4785aa8b727188b56688ff442d1c65ce.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Mauro Carvalho Chehab
134468b0e2 docs: kdoc_re: handle strings and escape chars on NextMatch
The logic inside NestedMatch currently doesn't consider that
function arguments may have chars and strings, which may
eventually contain delimiters.

Add logic to handle strings and escape characters on them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <ac25335bc2d09649e17d1c86c17d3f8f2e8ec27c.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Randy Dunlap
4ff59bdd93 docs: xforms_lists: ignore context analysis and lock attributes
Drop context analysis and lock (tracking) attributes to avoid
kernel-doc warnings.

There are now lots of warnings like these:

    Documentation/core-api/kref:328: ../include/linux/kref.h:72: WARNING: Invalid C declaration: Expected end of definition. [error at 96]
      int kref_put_mutex (struct kref *kref, void (*release)(struct kref *kref), struct mutex *mutex) __cond_acquires(true# mutex)
      ------------------------------------------------------------------------------------------------^
    Documentation/core-api/kref:328: ../include/linux/kref.h:94: WARNING: Invalid C declaration: Expected end of definition. [error at 92]
      int kref_put_lock (struct kref *kref, void (*release)(struct kref *kref), spinlock_t *lock) __cond_acquires(true# lock)
      --------------------------------------------------------------------------------------------^

The regex is suggested by Mauro; mine was too greedy. Thanks.
Updated context analysis and lock macros list provided by PeterZ. Thanks.

[mchehab: modified to be applied after xforms_lists split]

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20260107161548.45530e1c@canb.auug.org.au/
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <3c7fdfc364a8920f92530b47bdbf4bb29a40371f.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00
Mauro Carvalho Chehab
d842057c4a docs: kdoc_parser: move transform lists to a separate file
Over the time, most of the changes at kernel-doc are related
to maintaining a list of transforms to convert macros into pure
C code.

Place such transforms on a separate module, to cleanup the
parser module.

There is an advantage on that: QEMU also uses our own kernel-doc,
but the xforms list there is different. By placing it on a
separate module, we can minimize the differences and make it
easier to keep QEMU in sync with Kernel upstream.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <ccd74b7589e1fff340a74bf8ed16a974532cb54f.1772469446.git.mchehab+huawei@kernel.org>
2026-03-03 10:47:25 -07:00