Commit graph

1,396,768 commits

Author SHA1 Message Date
Tomas Glozar
6524d31e15 Documentation/rtla: Fix typo in common_timerlat_options.txt
Fix "awakes" being used in place of "awakened" in --users-threads option
documentation.

Fixes: 6127383217 ("Documentation: Add tools/rtla timerlat -u option documentation")
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251010083338.478961-3-tglozar@redhat.com>
2025-11-05 11:18:59 -07:00
Tomas Glozar
aad1530ff6 Documentation/rtla: Fix typo in common_options.txt
Fix "unlike" being spelled "nlike" in --on-threshold documentation.

Fixes: 70165c78e3 ("Documentation/rtla: Add actions feature")
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251010083338.478961-2-tglozar@redhat.com>
2025-11-05 11:18:50 -07:00
Andy Shevchenko
469c1c9eb6 kernel-doc: Issue warnings that were silently discarded
When kernel-doc parses the sections for the documentation some errors
may occur. In many cases the warning is simply stored to the current
"entry" object. However, in the most of such cases this object gets
discarded and there is no way for the output engine to even know about
that. To avoid that, check if the "entry" is going to be discarded and
if there warnings have been collected, issue them to the current logger
as is and then flush the "entry". This fixes the problem that original
Perl implementation doesn't have.

As of Linux kernel v6.18-rc4 the reproducer can be:

$ scripts/kernel-doc -v -none -Wall include/linux/util_macros.h
...
Info: include/linux/util_macros.h:138 Scanning doc for function to_user_ptr
...

while with the proposed change applied it gives one more line:

$ scripts/kernel-doc -v -none -Wall include/linux/util_macros.h
...
Info: include/linux/util_macros.h:138 Scanning doc for function to_user_ptr
Warning: include/linux/util_macros.h:144 expecting prototype for to_user_ptr(). Prototype was for u64_to_user_ptr() instead
...

And with the original Perl script:

$ scripts/kernel-doc.pl -v -none -Wall include/linux/util_macros.h
...
include/linux/util_macros.h:139: info: Scanning doc for function to_user_ptr
include/linux/util_macros.h:149: warning: expecting prototype for to_user_ptr(). Prototype was for u64_to_user_ptr() instead
...

Fixes: 9cbc2d3b13 ("scripts/kernel-doc.py: postpone warnings to the output plugin")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251104215502.1049817-1-andriy.shevchenko@linux.intel.com>
2025-11-05 11:05:37 -07:00
Lukas Bulwahn
27600b51fb MAINTAINERS: extend DOCUMENTATION SCRIPTS to the full directories
Due to commit abd61d1ff8 ("scripts: sphinx-pre-install: move it to
tools/docs"), checkpatch.pl --self-test=patterns reported a non-matching
file entry in DOCUMENTATION SCRIPTS. Clearly, there are now multiple
documentation scripts, all located in Documentation/sphinx/ and tools/docs/
and Mauro is the maintainer of those.

Update the DOCUMENTATION SCRIPTS section to cover these directories. While
at it, also make the DOCUMENTATION section cover the subdirectories of
tools/docs/.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251103075948.26026-1-lukas.bulwahn@redhat.com>
2025-11-03 16:43:21 -07:00
Jonathan Corbet
77a22121fe Merge branch 'tools-final2' into docs-mw
Our documentation-related tools are spread out over various directories;
several are buried in the scripts/ dumping ground.  That makes them harder
to discover and harder to maintain.

Recent work has started accumulating our documentation-related tools in
/tools/docs.  This series nearly completes that task, moving most of the
rest of our various utilities there, hopefully fixing up all of the
relevant references in the process.

The one exception is scripts/kernel-doc; that move turned up some other
problems, so I have dropped it until those are ironed out.

At the end, rather than move the old, Perl kernel-doc, I simply removed it.
2025-11-03 16:25:22 -07:00
Bagas Sanjaya
e849217cf3 Documentation: treewide: Replace marc.info links with lore
In the past, people would link to third-party mailing list archives
(like marc.info) for any kernel-related discussions. Now that there
is lore archive under kernel.org infrastructure, replace these marc
links

Note that the only remaining marc link is "Re: Memory mapping on Cirrus
EP9315" [1] since that thread is not available at lore [2].

[1]: https://marc.info/?l=linux-arm-kernel&m=110061245502000&w=2
[2]: https://lore.kernel.org/linux-arm-kernel/?q=b%3A%22Re%3A+Memory+mapping+on+Cirrus+EP9315%22

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Acked-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251031043358.23709-1-bagasdotme@gmail.com>
2025-11-03 16:21:31 -07:00
Jonathan Corbet
5d75e45518 Chinese translation docs for 6.18
This is the Chinese translation subtree for 6.18. It includes
 the following changes:
         - docs/zh_CN: Add rust Chinese translations
         - docs/zh_CN: Add scsi Chinese translations
         - docs/zh_CN: Add gfs2 Chinese translations
         - Add some other Chinese translations and fixes
 
 Above patches are tested by 'make htmldocs'
 
 Signed-off-by: Alex Shi <alexs@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEZFWMuCq1F2HcVvoPesqFB/fkdOYFAmkEU+ERHGFsZXhzQGtl
 cm5lbC5vcmcACgkQesqFB/fkdOZxbw//VQlKTkUnvAp4cge8feGy8JuhHExfXXW9
 2HjSU6ioysmkqidXveMjTkXY2VIs4RIR41cdgNq2dIzyp8rOQgxd3K6GD2kYoOYW
 XkGoJ7+hylT9y2WP0kGLZ+dwHt1uHrrutKhwpi61gpCkJxKW+L9BG0QWI/Xwo/cD
 nczxiHHZOoikpDA1WoVuB/v0JvWobXLn2FEcip3lpHuCy3WnXTD6cfJFbW5PUdxX
 N2hqdXfO9px5afKIPuuXgiFzyemqp+ANaPwukCBJ+L63CWPM2QZWksOx6+2FW8DF
 OCwkh4XazBJLwa4anlFo2k6oWzu+sJrmY24KSUYDeJiUAWZCFsjKyFWRI4lbAph+
 Mf9dp6nxNI97jRY7q82QzuKXTjpV4fVB6Zs184qYK1pdUSaNL/jSRk8k5Nd0O09X
 rttVpWBxszgSJH2MYU92moO9QE+1gFLfXAw06nEhwfSxETzptNACNWc+gZsnDBgn
 lxR3sAvD1nH2ig9n44xkdXlcf1nhZaXMe/T+c62pSerK+8LEoCYpl+L/kdNJWzFG
 B8iYa7p3gNEAOVWKfKYMrpU3q1r59uGuK6DhdXUvPredM1uMqFk+6SqJ/irHiqKN
 yZt9+nZqF2yWGWBItOW/28dbi13whqVIb5DP+LAmADtNqCACR9LSosXcsix8Oqwm
 KKZORvHMcdY=
 =jzY1
 -----END PGP SIGNATURE-----

Merge tag 'Chinese-docs-6.18' of gitolite.kernel.org:pub/scm/linux/kernel/git/alexs/linux into alex

Chinese translation docs for 6.18

This is the Chinese translation subtree for 6.18. It includes
the following changes:
        - docs/zh_CN: Add rust Chinese translations
        - docs/zh_CN: Add scsi Chinese translations
        - docs/zh_CN: Add gfs2 Chinese translations
        - Add some other Chinese translations and fixes

Above patches are tested by 'make htmldocs'
2025-11-03 16:19:12 -07:00
Gabriele Ricciardi
2c62e2e874 coding-style: fix verb typo
In the Identation section there is a list of instructions in
second-person. The offending line uses third-person singular.

Signed-off-by: Gabriele Ricciardi <gricciardi-coding@pm.me>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251101223027.171874-1-gricciardi-coding@pm.me>
2025-11-03 16:11:24 -07:00
Alex Shi
6fc05a144c Revert "Docs/zh_CN: Translate skbuff.rst to Simplified Chinese"
This reverts commit d3e7609c6e5ec92587ed1043a985749d22cc78d1.
The commit cause a warning:
  Documentation/networking/skbuff.rst:34: WARNING: duplicate label crc, other instance in Documentation/translations/zh_CN/networking/skbuff.rst

And there's no simple way to keep the meaningful doc context and avoid the
warning, so, let's remove the doc.

Signed-off-by: Alex Shi <alexs@kernel.org>
2025-10-31 14:01:35 +08:00
Jacob Keller
e5e7ca66a7 docs: kdoc: fix duplicate section warning message
The python version of the kernel-doc parser emits some strange warnings
with just a line number in certain cases:

$ ./scripts/kernel-doc -Wall -none 'include/linux/virtio_config.h'
Warning: 174
Warning: 184
Warning: 190
Warning: include/linux/virtio_config.h:226 No description found for return value of '__virtio_test_bit'
Warning: include/linux/virtio_config.h:259 No description found for return value of 'virtio_has_feature'
Warning: include/linux/virtio_config.h:283 No description found for return value of 'virtio_has_dma_quirk'
Warning: include/linux/virtio_config.h:392 No description found for return value of 'virtqueue_set_affinity'

I eventually tracked this down to the lone call of emit_msg() in the
KernelEntry class, which looks like:

  self.emit_msg(self.new_start_line, f"duplicate section name '{name}'\n")

This looks like all the other emit_msg calls. Unfortunately, the definition
within the KernelEntry class takes only a message parameter and not a line
number. The intended message is passed as the warning!

Pass the filename to the KernelEntry class, and use this to build the log
message in the same way as the KernelDoc class does.

To avoid future errors, mark the warning parameter for both emit_msg
definitions as a keyword-only argument. This will prevent accidentally
passing a string as the warning parameter in the future.

Also fix the call in dump_section to avoid an unnecessary additional
newline.

Fixes: e3b42e94cf ("scripts/lib/kdoc/kdoc_parser.py: move kernel entry to a class")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251030-jk-fix-kernel-doc-duplicate-return-warning-v2-1-ec4b5c662881@intel.com>
2025-10-30 15:13:18 -06:00
Brendan Jackman
b4ff1f611b Documentation: fix reference to PR_SPEC_L1D_FLUSH
PR_SET_L1D_FLUSH does not exist.

Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251015-l1d-flush-doc-v1-2-f8cefea3f2f2@google.com>
2025-10-29 16:19:27 -06:00
Brendan Jackman
aab703b3c6 Documentation: clarify PR_SPEC_L1D_FLUSH
For PR_SPEC_STORE_BYPASS and PR_SPEC_INDIRECT_BRANCH, PR_SPEC_DISABLE
means "disable the speculation bug" i.e. "enable the mitigation".

For PR_SPEC_L1D_FLUSH, PR_SPEC_DISABLE means "disable the mitigation".
This is not obvious, so document it.

Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251015-l1d-flush-doc-v1-1-f8cefea3f2f2@google.com>
2025-10-29 16:19:27 -06:00
Bagas Sanjaya
ba2457109d Documentation: process: Also mention Sasha Levin as stable tree maintainer
Sasha has also maintaining stable branch in conjunction with Greg
since cb5d21946d ("MAINTAINERS: Add Sasha as a stable branch
maintainer"). Mention him in 2.Process.rst.

Cc: stable@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251022034336.22839-1-bagasdotme@gmail.com>
2025-10-29 16:19:27 -06:00
Nadav Tasher
9de608a26f docs: replace broken links in ramfs-rootfs-initramfs docs
http://www.uwsg.iu.edu/ doesn't seem to exist anymore.
I managed to find backups on archive.org, which helped me find
the right links on https://lore.kernel.org/.

http://freecode.com/projects/afio was also down, so I figured
it could be replaced with https://linux.die.net/man/1/afio.

Replace broken links to mailing list and aifo tool.

Signed-off-by: Nadav Tasher <tashernadav@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251025171625.33197-1-tashernadav@gmail.com>
2025-10-29 16:19:26 -06:00
Akira Yokosawa
1f6e3f2139 tools/docs/sphinx-build-wrapper: Emit $SPHINXOPTS later in args list
The option list to sphinx-build via SPHINXOPTS should have higher
priority than those the wrapper comes up with.
sphinx-build will choose the latest one if there are duplicates.

To restore the behavior of Makefile era, when the documentation builds
at https://www.kernel.org/doc/html/next/ had been depending on it,
reorder the flag list.

Reported-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Closes: https://lore.kernel.org/20251007-awesome-guan-of-greatness-e6ec75@lemur/
Reported-by: Akira Yokosawa <akiyks@gmail.com>
Closes: https://lore.kernel.org/c35e690f-0579-49cb-850c-07af98e5253a@gmail.com/
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <eaf4bfd8-fb80-45d0-b3ec-4047692ebbed@gmail.com>
2025-10-29 09:48:21 -06:00
Jonathan Corbet
683e8cbaba docs: remove kernel-doc.pl
We've been using the Python version and nobody has missed this one.  All
credit goes to Mauro Carvalho Chehab for creating the replacement.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:31 -06:00
Jonathan Corbet
184414c6a6 docs: move find-unused-docs.sh to tools/docs
...and update references accordingly.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:27 -06:00
Jonathan Corbet
f1c2db1f14 docs: move test_doc_build.py to tools/docs
Add this tool to tools/docs.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:24 -06:00
Jonathan Corbet
a5dd93016f docs: move get_abi.py to tools/docs
Move this tool out of scripts/ to join the other documentation tools; fix
up a couple of erroneous references in the process.

It's worth noting that this script will fail badly unless one has a
PYTHONPATH referencing scripts/lib/abi.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:20 -06:00
Jonathan Corbet
eaae0ad972 docs: move scripts/documentation-file-ref-check to tools/docs
Add this script to the growing collection of documentation tools.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:17 -06:00
Jonathan Corbet
d37366cac4 docs: move checktransupdate.py to tools/docs
The checktranslate.py tool currently languishes in scripts/; move it to
tools/docs and update references accordingly.

Cc: Alex Shi <alexs@kernel.org>
Cc: Yanteng Si <si.yanteng@linux.dev>
Cc: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:13 -06:00
Jonathan Corbet
909597fa01 docs: Move the "features" tools to tools/docs
The scripts for managing the features docs are found in three different
directories; unite them all under tools/docs and update references as
needed.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-10-28 16:01:00 -06:00
Brian Norris
0aa760051f docs: checkpatch: Drop networking comment style
Networking no longer has their own comment style, and checkpatch no
longer checks for this.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251017203719.1554224-2-briannorris@chromium.org>
2025-10-21 14:36:33 -06:00
Brian Norris
7159cf9fad docs: checkpatch: Align block comment style
Ironically, the block style comments in the checkpatch documentation are
not aligned properly. Correct that.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251017203719.1554224-1-briannorris@chromium.org>
2025-10-21 14:36:33 -06:00
Ally Heev
d0ef999061 Documentation: fix dev-tools broken links in translations
gdb and kgdb debugging documentation were moved to
Documentation/process/debugging/ as a part of
Commit d5af79c05e ("Documentation: move
dev-tools debugging files to process/debugging/"), but translations/
were not updated. Fix them

Signed-off-by: Ally Heev <allyheev@gmail.com>
Fixes: d5af79c05e ("Documentation: move dev-tools debugging files to process/debugging/")
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251020-aheev-fix-docs-dev-tools-broken-links-v2-1-7db64bf0405a@gmail.com>
2025-10-21 14:14:38 -06:00
Ben Guo
9b31970e1a docs/zh_CN: Add translation of rust/testing.rst
Complete the translation of rust/testing.rst and add the testing TOC entry
to rust/index.rst.

Add the translation based on commit a3b2347343
("Documentation: rust: testing: add docs on the new KUnit `#[test]` tests").

Signed-off-by: Ben Guo <benx.guo@gmail.com>
Reviewed-by: Yanteng Si <siyanteng@cqsoftware.com.cm>
Signed-off-by: Alex Shi <alexs@kernel.org>
2025-10-18 14:37:25 +08:00
Shuo Zhao
7b8a943944 docs/zh_CN: Add secrets coco Chinese translation
Translate .../security/secrets/coco.rst into Chinese.

Update the translation through commit d56b699d76
("Documentation: Fix typos").

Signed-off-by: Shuo Zhao <zhaoshuo@cqsoftware.com.cn>
Reviewed-by: Yanteng Si <siyanteng@cqsoftware.com.cn>
Signed-off-by: Alex Shi <alexs@kernel.org>
2025-10-18 14:32:54 +08:00
Gopi Krishna Menon
96b546c241 Documentation/rtla: rename common_xxx.rst files to common_xxx.txt
Sphinx reports htmldocs errors:

Documentation/tools/rtla/common_options.rst:58: ERROR: Undefined substitution referenced: "threshold".
Documentation/tools/rtla/common_options.rst:88: ERROR: Undefined substitution referenced: "tool".
Documentation/tools/rtla/common_options.rst:88: ERROR: Undefined substitution referenced: "thresharg".
Documentation/tools/rtla/common_options.rst:88: ERROR: Undefined substitution referenced: "tracer".
Documentation/tools/rtla/common_options.rst:92: ERROR: Undefined substitution referenced: "tracer".
Documentation/tools/rtla/common_options.rst:98: ERROR: Undefined substitution referenced: "actionsperf".
Documentation/tools/rtla/common_options.rst:113: ERROR: Undefined substitution referenced: "tool".

common_*.rst files are snippets that are intended to be included by rtla
docs (rtla*.rst). common_options.rst in particular contains
substitutions which depend on other common_* includes, so building it
independently as reST source results in above errors.

Rename all common_*.rst files to common_*.txt to prevent Sphinx from
building these snippets as standalone reST source and update all include
references accordingly.

Link: https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html#substitutions
Suggested-by: Tomas Glozar <tglozar@redhat.com>
Suggested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Reviewed-by: Tomas Glozar <tglozar@redhat.com>
Fixes: 05b7e10687 ("tools/rtla: Add remaining support for osnoise actions")
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20251008184522.13201-1-krishnagopi487@gmail.com
[Bagas: massage commit message and apply trailers]
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251013092719.30780-2-bagasdotme@gmail.com>
2025-10-17 14:25:12 -06:00
Bagas Sanjaya
22605d257b Documentation: assoc_array: Format internal tree layout tables
Format tables in "Basic internal tree layout" as reST tables.

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251013095630.34235-4-bagasdotme@gmail.com>
2025-10-17 14:23:04 -06:00
Bagas Sanjaya
54ff675c2b Documentation: assoc_array: Indent function explanation text
Paragraphs of function explanation are currently not indented following
their appropriate numbered list item, which causes only the first
paragraph and function prototype code blocks to be indented in the
numbered list in htmldocs output.

Indent the explanation.

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251013095630.34235-3-bagasdotme@gmail.com>
2025-10-17 14:23:04 -06:00
Yohei Kojima
04623798aa docs: admin-guide: Fix a typo in kernel-parameters.txt
Fix a typo in the stacktrace parameter description in kernel-parameters.txt

Signed-off-by: Yohei Kojima <Yohei.Kojima@sony.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <edda15e3fcae13265278d3c3bd93ab077345d78f.1760498951.git.Yohei.Kojima@sony.com>
2025-10-17 14:16:10 -06:00
Jonathan Corbet
3df5affb4b Merge branch 'build-script' into docs-mw
Quoth Mauro:

This series should probably be called:

    "Move the trick-or-treat build hacks accumulated over time
     into a single place and document them."

as this reflects its main goal. As such:

- it places the jobserver logic on a library;
- it removes sphinx/parallel-wrapper.sh;
- the code now properly implements a jobserver-aware logic
  to do the parallelism when called via GNU make, failing back to
  "-j" when there's  no jobserver;
- converts check-variable-fonts.sh to Python and uses it via
  function call;
- drops an extra script to generate man pages, adding a makefile
  target for it;
- ensures that return code is 0 when PDF successfully builds;
- about half of the script is comments and documentation.

I tried to do my best to document all tricks that are inside the
script. This way, the docs build steps is now documented.

It should be noticed that it is out of the scope of this series
to change the implementation. Surely the process can be improved,
but first let's consolidate and document everything on a single
place.

Such script was written in a way that it can be called either
directly or via a Makefile. Running outside Makefile is
interesting specially when debug is needed. The command line
interface replaces the need of having lots of env vars before
calling sphinx-build:

    $ ./tools/docs/sphinx-build-wrapper --help
    usage: sphinx-build-wrapper [-h]
	   [--sphinxdirs SPHINXDIRS [SPHINXDIRS ...]] [--conf CONF]
	   [--builddir BUILDDIR] [--theme THEME] [--css CSS] [--paper {,a4,letter}] [-v]
	   [-j JOBS] [-i] [-V [VENV]]
	   {cleandocs,linkcheckdocs,htmldocs,epubdocs,texinfodocs,infodocs,mandocs,latexdocs,pdfdocs,xmldocs}

    Kernel documentation builder

    positional arguments:
      {cleandocs,linkcheckdocs,htmldocs,epubdocs,texinfodocs,infodocs,mandocs,latexdocs,pdfdocs,xmldocs}
			    Documentation target to build

    options:
      -h, --help            show this help message and exit
      --sphinxdirs SPHINXDIRS [SPHINXDIRS ...]
			    Specific directories to build
      --conf CONF           Sphinx configuration file
      --builddir BUILDDIR   Sphinx configuration file
      --theme THEME         Sphinx theme to use
      --css CSS             Custom CSS file for HTML/EPUB
      --paper {,a4,letter}  Paper size for LaTeX/PDF output
      -v, --verbose         place build in verbose mode
      -j, --jobs JOBS       Sets number of jobs to use with sphinx-build
      -i, --interactive     Change latex default to run in interactive mode
      -V, --venv [VENV]     If used, run Sphinx from a venv dir (default dir: sphinx_latest)

the only mandatory argument is the target, which is identical with
"make" targets.

The call inside Makefile doesn't use the last four arguments. They're
there to help identifying problems at the build:

    -v makes the output verbose;
    -j helps to test parallelism;
    -i runs latexmk in interactive mode, allowing to debug PDF
       build issues;
    -V is useful when testing it with different venvs.

When used with GNU make (or some other make which implements jobserver),
a call like:

    make -j <targets> htmldocs

will make the wrapper to automatically use POSIX jobserver to claim
the number of available job slots, calling sphinx-build with a
"-j" parameter reflecting it. ON such case, the default can be
overriden via SPHINXDIRS argument.

Visiable changes when compared with the old behavior:

When V=0, the only visible difference is that:
- pdfdocs target now returns 0 on success, 1 on failures.
  This addresses an issue over the current process where we
  it always return success even on failures;
- it will now print the name of PDF files that failed to build,
  if any.

In verbose mode, sphinx-build-wrapper and sphinx-build command lines
are now displayed.
2025-10-17 14:11:30 -06:00
Jonathan Corbet
d0841b8761 Merge branch 'media-uapi' into docs-mw
Mauro says:

In the past, media used Docbook to generate documentation, together
with some logic to ensure that cross-references would match the
actual defined uAPI.

The rationale is that we wanted to automatically check for uAPI
documentation gaps.

The same logic was migrated to Sphinx. Back then, broken links
were reported. However, recent versions of it and/or changes at
conf.py disabled such checks.

The result is that several symbols are now not cross-referenced,
and we don't get warnings anymore when something breaks.

This series consist on 2 parts:

Part 1: extra patches to parse_data_structs.py and kernel_include.py;
Part 2: media documentation fixes.
2025-10-17 14:07:08 -06:00
Mauro Carvalho Chehab
be63b06be5 docs: media: dvb: fix dmx.h.rst.exceptions
There are lots of broken links on dmx. Those are mostly linked
to namespace handling.

Yet, some symbols were pointed to the wrong locations, and there
are some definitions that aren't needed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b2acf243771529daa925afddd2b68d07d7bbb164.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
c7d830d26b docs: media: dvb: headers: warn about broken cross references
Enable cross-reference warnings for demux header.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <8f98dde399df8b937dadf09168194bacce682c7d.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
6393c3780e docs: media: dmx_types: place kerneldoc at the right namespace
The DVB documentation is using DTV.dmx for all demux symbols.

Use such domain for kernel-doc documentation.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <27fcc036fb5c80bda8116029e1964ad229208095.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
95a0bd5d79 docs: cec: show broken xrefs and show TOC instead of cec.h content
Enable xref broken warnings. While here, change the output to
only show cross-references, as there's no need to show the entire cec.h
header at the docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c587872ca3685213d9f8e88277404c9e253633df.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:57:00 -06:00
Mauro Carvalho Chehab
becd89fd86 docs: cec: cec.h.rst.exceptions: fix broken references from cec.h
All references there belong to CEC namespace.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <dd1270dd5d91538cdfb0b087127c53a9f4ba7885.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
7ef84239ed media: docs: add some C domain missing references
Some enum/struct fields don't contain C domain references.
Add them to avoid broken xrefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <c9b036938197f1dd5bc93f5c5be0245bd9e5d1ee.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
753b113b77 media: docs: videodev2.h.rst.exceptions: ignore struct __kernel_v4l2_timeval
This is an ancillary struct used for year-2038 compat logic.
It is not meant to be used directly on userspace.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <a6a0dc7366b1a5d7184b8f7d4ba27689051a1f6a.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
fec3d4c376 media: docs: add a missing reference for VIDIOC_QUERY_CTRL
This one is missing its c:macro definition.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <46f86be6ace28abe83ea9ce6fa6138e40185a23a.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
145b1d5c2e docs: media: videodev2.h.rst.exceptions: fix namespace on refs
Media uses V4L domain, but the replace rules are not considering
it.

Fix them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <927f9c19d90b62ffda950cdac9bba23c2ca09f53.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
ce062cdc2e docs: media: add missing c namespace to V4L headers
Media references belong to V4L namespace. Fix a lot of broken
links when including videodev2.h and probably fixing several
other broken cross-references between different files inside
media docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b69fc5bd43da7d326b9f4720df59388088c64065.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
11578a2ecb docs: kernel_include.py: use get_close_matches() to propose alternatives
Improve the suggestions algorithm by using get_close_matches() if
no suggestions with the same name are found. As we're now building
a dict, when the name is identical, but on a different domain,
the search is O(1), making it a lot faster.

The get_close_matches is also fast, as there is just one loop,
instead of 3.

This can be useful to detect typos on references, with could
be the base of a futuere extension that will handle ref unmatches
for the entire build, allowing someone to find typos and fix them.

As difflib and get_close_matches are there since the early
Python 3.x days, we don't need to handle any extra dependencies
to use it.

We're keeping the default values for the search, e.g. n=3, cutoff=0.6.
With that, we now have things like:

  $ make SPHINXDIRS="userspace-api/media" htmldocs
  ...
  include/uapi/linux/videodev2.h:199: WARNING: Invalid xref: c:type:`v4l2_memory`. Possible alternatives:
        c:type:`v4l2_meta_format` (from v4l/dev-meta)
        c:type:`v4l2_rect` (from v4l/dev-overlay)
        c:type:`v4l2_area` (from v4l/ext-ctrls-image-source) [ref.missing]
  ...
  include/uapi/linux/videodev2.h:1985: WARNING: Invalid xref: c:type:`V4L.v4l2_queryctrl`. Possible alternatives:
        std🏷️`v4l2-queryctrl` (from v4l/vidioc-queryctrl)
        std🏷️`v4l2-query-ext-ctrl` (from v4l/vidioc-queryctrl)

At the first example, it was not a typo, but a symbol that doesn't
seem to be properly documented. The second example points to
v4l2-queryctrl, which is a close match for the symbol.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <7365feb74cbdd6b982c87baf5863360ab98cf727.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
2792fc7307 docs: media: mediactl: use TOC instead of file contents
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for media controller and enable warnings.

Here, we need to adjust the exceptions file to setup the C
namespace accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <5c8a87be712397563fc8ca914c3d92fe675e4071.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
94d95887ea docs: media: rc: use TOC instead of file contents for LIRC header
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for LIRC and enable warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <94dc601b4777ca544489ffc6cef9a2da5fe28e0e.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
a75968226c docs: media: dvb: enable warnings for most headers
Except for two exception rules and dmx.h, the other files
are already handling properly cross references.

Fix the two exception rules for frontend.h, as those are
false-positives:

	include/uapi/linux/dvb/frontend.h:959: WARNING: can't link to: c:type:: FE_GET_PROPERTY
	include/uapi/linux/dvb/frontend.h:933: WARNING: can't link to: c:func:: FE_SET_FRONTEND_TUNE_MODE

The dmx.h are actual issues that will require an extra
patch to fill gaps.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <9ae6556ebd47de4f066a149ab0bbe7ce27acf2c4.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
f0eb1b4ce7 docs: media: dvb: use TOC instead of file contents at headers
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for DVB.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <dbe95d83ae2117ed532fda423fd1c1d9906b7a19.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
d2a72e1f27 tools: docs: parse_data_structs.py: accept more reftypes
Current regex is limited to only some c-domain reftypes.
There are several others.

Change the code to pick the name specified there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <5c146923d1e3183893f290216fb1378954e2e540.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00
Mauro Carvalho Chehab
7f809e6a6f tools: docs: parse_data_structs.py: add namespace support
C domain supports a ".. c:namespace::" tag that allows setting a
symbol namespace. This is used within the kernel to avoid warnings
about duplicated symbols. This is specially important for syscalls,
as each subsystem may have their own documentation for them.
This is specially true for ioctl.

When such tag is used, all C domain symbols have c++ style,
e.g. they'll become "{namespace}.{reference}".

Allow specifying C namespace at the exception files, avoiding
the need of override rules for every symbol.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <cc27ec60ceb3bdac4197fb7266d2df8155edacda.1759329363.git.mchehab+huawei@kernel.org>
2025-10-17 13:56:59 -06:00