Fixes the following error in the docs build that occurs with recent
versions of Sphinx when parsing kerneldocs for a function with the
'__force' macro in its signature:
./include/linux/err.h:51: WARNING: Error in declarator or parameters
Error in declarator or parameters
Invalid C declaration: Expected identifier, got keyword: void [error at 35]
void * ERR_CAST (__force const void *ptr)
-----------------------------------^
Currently, almost all of the few in-signature occurrences of '__force'
are in the error pointer functions. Of those, ERR_CAST() is the only
one with kerneldocs, but the kerneldocs aren't even being used to
generate documentation. This change will allow all the error pointer
functions to be properly documented.
In addition to '__force', <linux/compiler_types.h> also defines
'__nocast', '__safe', and '__private'. These are not currently used in
any function signatures and do not need to be added to the docs config.
Signed-off-by: James Seo <james@equiv.tech>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230509175543.2065835-2-james@equiv.tech
We have long disabled the "html_use_smartypants" option to prevent Sphinx
from mangling "--" sequences (among others). Unfortunately, Sphinx changed
that option to "smartquotes" in the 1.6.6 release, and seemingly didn't see
fit to warn about the use of the obsolete option, resulting in the
aforementioned mangling returning. Disable this behavior again and hope
that the option name stays stable for a while.
Reported-by: Zipeng Zhang <zhangzipeng0@foxmail.com>
Link: https://lore.kernel.org/lkml/tencent_CB1A298D31FD221496FF657CD7EF406E6605@qq.com
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
changes include:
- Some significant additions to the memory-management documentation
- Some improvements to navigation in the HTML-rendered docs
- More Spanish and Chinese translations
...and the usual set of typo fixes and such.
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Merge tag 'docs-6.3' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a moderately calm cycle for documentation; the significant
changes include:
- Some significant additions to the memory-management documentation
- Some improvements to navigation in the HTML-rendered docs
- More Spanish and Chinese translations
... and the usual set of typo fixes and such"
* tag 'docs-6.3' of git://git.lwn.net/linux: (68 commits)
Documentation/watchdog/hpwdt: Fix Format
Documentation/watchdog/hpwdt: Fix Reference
Documentation: core-api: padata: correct spelling
docs/mm: Physical Memory: correct spelling in reference to CONFIG_PAGE_EXTENSION
docs: Use HTML comments for the kernel-toc SPDX line
docs: Add more information to the HTML sidebar
Documentation: KVM: Update AMD memory encryption link
printk: Document that CONFIG_BOOT_PRINTK_DELAY required for boot_delay=
Documentation: userspace-api: correct spelling
Documentation: sparc: correct spelling
Documentation: driver-api: correct spelling
Documentation: admin-guide: correct spelling
docs: add workload-tracing document to admin-guide
docs/admin-guide/mm: remove useless markup
docs/mm: remove useless markup
docs/mm: Physical Memory: remove useless markup
docs/sp_SP: Add process magic-number translation
docs: ftrace: always use canonical ftrace path
Doc/damon: fix the data path error
dma-buf: Add "dma-buf" to title of documentation
...
Add a new sidebar template that creates a more RTD-like "fisheye" view of
the current place in the document hierarchy. It is far from ideal, but
some readers may find it better for navigating through the documentation as
a whole.
Add some CSS trickery as well to make the table of contents less intrusive
when viewing the pages on a small screen.
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Reviewed-by: David Gow <davidgow@google.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Now that the __bpf_kfunc macro has been added to linux/btf.h, include a
blurb about it in the kfuncs.rst file. In order for the macro to
successfully render with .. kernel-doc, we'll also need to add it to the
c_id_attributes array.
Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20230201173016.342758-3-void@manifault.com
"about.html" is available only for the alabaster theme [1].
Unconditionally putting it to html_sidebars prevents us from
using other themes which respect html_sidebars.
Remove about.html from the initialization and insert it at the
front for the alabaster theme.
Link: [1] https://alabaster.readthedocs.io/en/latest/installation.html#sidebars
Fixes: d5389d3145 ("docs: Switch the default HTML theme to alabaster")
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/4b162dbe-2a7f-1710-93e0-754cf8680aae@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The Sphinx 2.4 release is three years old, and it is becoming increasingly
difficult to even find a system with an sufficiently archaic Python
installation that can run versions older than that. I can no longer test
changes against anything prior to 2.4.x.
Move toward raising our minimum Sphinx requirement to 2.4.x so we can
delete some older support code and claim to support a range of versions
that we can actually test.
In the absence of screams, the actual removal of support can happen later
in 2023.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
We love to nest our documenation for good structure, but that means
the table of contents needs to keep up or you can't navigate them.
Realized this trying to find the drm property documentation, which
with some shuffling around disappeared. Why I didn't realize we can do
this earlier, no idea.
Since the relevant parts of the toc are only loaded if you're in the
right .html file there's no harm in going all the way to unlimited.
Note that this has no impact on the alabaster theme (which has a much
simpler sidebar toc which doesn't show the entire hierarchy, only
what's in the local rendered file) nor on the various :toctree:
rendered inline in the output.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20221108115707.1232621-1-daniel.vetter@ffwll.ch
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The alabaster theme likes to provide explicit sizes for fonts, which
overrides the users's own browser settings and is guaranteed to displease
folks. Set the font size to "inherit" so that the users browser settings
control the font size they get. We can use the font_size configuration
option for the main body font (changing the size I'd already put there),
but the sidebar size can only be set via custom CSS.
Reported-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Remove the ancient support for the Sphinx "classic" theme; everybody will
have alabaster, so that fallback is no longer needed.
While in the neighborhood: get rid of lots of useless comment lines. They
describe the state of Sphinx options when we first created that file and
are just clutter now.
Suggested-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This is just the beginning: tighten up the layout a bit to improve the
information density in the browser. Also reconfigure the page width in
terms of character units (em) rather than pixels, making it more
display-independent. To that end, add a custom.css file to
tweak Alabaster CSS settings.
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The read-the-docs theme is not entirely attractive and doesn't give us
control over the left column. "Alabaster" is deemed the default Sphinx
theme, it is currently maintained and shipped bundled with Sphinx itself,
so there is no need to install it separately. Switch over to this theme as
the default for building kernel documentation; the DOCS_THEME environment
variable can still be used to select a different theme.
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Use the html_sidebars directive to get a more useful set of links in the
left column.
Unfortunately, this is a no-op with the default RTD theme, but others
observe it.
Reviewed-by: David Vernet <void@manifault.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220927160559.97154-4-corbet@lwn.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
On some distros with coarse-grained packaging policy, dvipng is
installed along with latex. In such cases, math rendering will
use imgmath by default. It is possible to override the choice by
specifying the option string of "-D html_math_renderer='mathjax'"
to sphinx-build (Sphinx >= 1.8).
To provide developers an easier-to-use knob, add code for an env
variable "SPHINX_IMGMATH" which overrides the automatic choice
of math renderer for html docs.
SPHINX_IMGMATH=yes : Load imgmath even if dvipng is not found
SPHINX_IMGMATH=no : Don't load imgmath (fall back to mathjax)
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/5a582b2b-d51c-a062-36b2-19479cf68fab@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Currently, math expressions using the "math::" directive or
the ":math:" role of Sphinx need the imgmath extension for proper
rendering in html and epub builds.
imgmath requires dvipng (and latex).
Otherwise, "make htmldocs" will complain of missing commands.
As a matter of fact, the mathjax extension is loaded by default since
Sphinx v1.8 and it is good enough for html docs without any dependency
on texlive packages.
Stop loading the imgmath extension for html docs unless requirements
for imgmath are met.
To find out whether required commands are available, add a helper
find_command(), which is a wrapper of shutil.which().
For epub docs, keep the same behavior of always loading imgmath.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/a6a877fc-dc93-2bda-a6d3-37001d99942a@gmail.com
[jc: Took out the writing of the math_renderer decision]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
One of the changes in Sphinx 5.0.0 [1] says [sic]:
5.0.0 final
- #10474: language does not accept None as it value.
The default value of language becomes to 'en' now.
[1]: https://www.sphinx-doc.org/en/master/changes.html#release-5-0-0-released-may-30-2022
It results in a new warning from Sphinx 5.0.0 [sic]:
WARNING: Invalid configuration value found: 'language = None'.
Update your configuration to a valid langauge code. Falling
back to 'en' (English).
Silence the warning by using 'en'.
It works with all the Sphinx versions required for building
kernel documentation (1.7.9 or later).
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/bd0c2ddc-2401-03cb-4526-79ca664e1cbe@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Quote from Jon's remark [1]:
I do notice that Documentation/conf.py is getting large and
unapproachable. At some future point, it might be nice to pull
all of the latex stuff out into a separate file where it won't
scare people who stumble into it by accident.
Pull LaTeX preamble settings added since commit 3b4c963243 ("docs:
conf.py: adjust the LaTeX document output") out into
sphinx/kerneldoc-preamble.sty.
It will be copied to the build directory by the added
"latex_additional_files" setting in conf.py.
As a bonus, LaTeX/TeX code can be maintained without escaping backslashes.
To compensate the loss of change history in sphinx/kerneldoc-preamble.sty,
here is a list of changes made in conf.py:
- f7ebe6b769 ("docs: Activate exCJK only in CJK chapters")
- 0afd4df0d1 ("docs: pdfdocs: Prevent column squeezing by tabulary")
- 659653c9e5 ("docs: pdfdocs: Refactor config for CJK document")
- e291ff6f5a ("docs: pdfdocs: Add CJK-language-specific font settings")
- 7eb368cc31 ("docs: pdfdocs: Choose Serif font as CJK mainfont if possible")
- 35382965bd ("docs: pdfdocs: Preserve inter-phrase space in Korean translations")
- 77abc2c230 ("docs: pdfdocs: One-half spacing for CJK translations")
- 788d28a257 ("docs: pdfdocs: Permit AutoFakeSlant for CJK fonts")
- 29ac982235 ("docs: pdfdocs: Teach xeCJK about character classes of quotation marks")
- 7c5c18bdb6 ("docs: pdfdocs: Fix typo in CJK-language specific font settings")
- aa872e0647 ("docs: pdfdocs: Adjust \headheight for fancyhdr")
- 8716ef413a ("docs: pdfdocs: Tweak width params of TOC")
- 66939df539 ("docs: pdfdocs: Switch default CJK font to KR variants")
- 7b686a2ea1 ("docs: pdfdocs: Enable CJKspace in TOC for Korean titles")
- 5d9158e3c7 ("docs/translations: Skip CJK contents if suitable fonts not found")
- b774cc4631 ("docs: pdfdocs: Move CJK monospace font setting to main conf.py")
[1]: https://lore.kernel.org/all/87zgmr66cn.fsf@meer.lwn.net/
Suggested-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/aaa9dca1-27c0-c414-77f3-c5587db0cc5b@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
As LaTeX macros for CJK font settings can have Latin-script font
settings as well, settings under Documentation/translations/ can
be moved to the main conf.py.
By this change, translations.pdf built by top-level "make pdfdocs"
can have properly aligned ascii-art diagrams except for Korean
ones.
For the reason of remaining misalignment in Korean diagrams, see
changelog of commit a90dad8f61 ("docs: pdfdocs: Add conf.py
local to translations for ascii-art alignment").
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/eb87790a-03f4-9f29-c8a3-ef2c3e78ca18@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
On systems without "Noto Sans CJK" fonts, CJK chapters in
translations.pdf are full of "TOFU" boxes, with a long build time and
a large log file containing lots of missing-font warnings.
Avoid such waste of time and resources by skipping CJK chapters when
CJK fonts are not available.
To skip whole chapters, change the definition of
\kerneldocBegin{SC|TC|KR|JP} commands so that they can have an argument
to be ignored.
This works as far as the argument (#1) is not used in the command.
In place of skipped contents, put a note on skipped contents at the
beginning of the PDF.
Change the call sites in index.rst of CJK translations accordingly.
When CJK fonts are available, existing command definitions with
no argument just work. LaTeX engine will see additional pairs of
"{" and "}", which add a level of grouping without having any effect
on typesetting.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/3359ca41-b81d-b2c7-e437-7618efbe241d@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Korean (Hangul) titles in Table of Contents of translations.pdf
don't have inter-phrase spaces.
This is because the CJKspace option of xeCJK is disabled by
default.
Restore the spaces by enabling the option at the beginning of every
document and disable it in the \kerneldocBegin{SC|TC|JP} commands.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/19141b3e-01d9-1f6d-5020-42fbda784831@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
xeCJK is enabled in Table of Contents (TOC) so that translations.pdf
built by top-level "make pdfdocs" can have its TOC typeset properly.
This causes quotation marks and apostrophe symbols appear too wide in
Latin-script docs.
This is because (1) Sphinx converts ASCII symbols into multi-byte
UTF-8 ones in LaTeX and (2) in the SC variant of "Noto CJK" font
families, those UTF-8 symbols have full-width glyph.
The KR variant of the font families has half-width glyph for those
symbols and TOC pages should look nicer when it is used instead.
Switch the default CJK font families to the KR variant and teach
xeCJK of those symbols' widths.
To compensate the switch, teach xeCJK of the width in the SC and
TC variants.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/0c8ea878-0a6f-ea01-ab45-4e66c5facee9@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sphinx has its own set of width parameters of Table of Contents (TOC)
for LaTeX defined in its class definition of sphinxmanual.cls.
It also inherits parameters for chapter entries from report.cls of
original LaTeX base.
However, they are optimized assuming small documents with tens of
pages and chapters/sections of less than 10.
To cope with some of kernel-doc documents with more than 1000
pages and several tens of chapters/sections, definitions of those
parameters need to be adjusted.
Unfortunately, those parameters are hard coded in the class
definitions and need low-level LaTeX coding tricks to redefine.
As Sphinx 1.7.9 does not have \sphinxtableofcontentshook,
which defines those parameters in later Sphinx versions,
for compatibility with both pre-1.8 and later Sphinx versions,
empty the hook altogether and redefine \@pnumwidth, \l@chapter,
\l@section, and \@subsection commands originally defined in
report.cls.
Summary of parameter changes:
Width of page number (\@pnumwidth): 1.55em -> 2.7em
Width of chapter number: 1.5em -> 1.8em
Indent of section number: 1.5em -> 1.8em
Width of section number: 2.6em -> 3.2em
Indent of subsection number: 4.1em -> 5em
Width of subsection number: 3.5em -> 4.3em
Notes:
1. Parameters for subsection become relevant only when
":maxdepth: 3" is specified under "toctree::" (e.g., RCU/index.rst).
They can hold subsection numbers up to 5 digits such as "18.7.13"
(in RCU.pdf).
2. Number of chapters in driver-api.pdf is getting closer to 100.
When it reaches 100, another set of tweaks will be necessary.
3. The low-level LaTeX trick is mentioned in "Unofficial LaTeX2e
reference manual" at:
http://latexref.xyz/Table-of-contents-etc_002e.html
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/e52b4718-7909-25be-fbc1-76800aa62ae3@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This is actually an overlay on the top of the RTD theme, which
requires to include first the RTD theme.
It should be noticed that, when the dark theme is used, the
DOCS_CSS files won't be the last CSS themes. So, it won't
override the dark.css style by default. So, it is needed
to force the them override with "!important".
This small script, for instance, produces a nice output with
the RTD dark theme:
DOCS_THEME=sphinx_rtd_dark_mode
cat << EOF > dark_override.css
html body {
font-family: arial,helvetica,sans-serif;
}
html[data-theme='dark'] body {
color: white !important;
}
html[data-theme='dark'] .sig-name {
color: green !important;
}
html[data-theme='dark'] .wy-menu-vertical a {
color: #ffcc00 !important;
}
html[data-theme="dark"] h1, html[data-theme="dark"] h2, html[data-theme="dark"] h3 {
color: #ffcc00 !important;
}
html[data-theme="dark"] h4, html[data-theme="dark"] h5, html[data-theme="dark"] h6 {
color: #ffcc00 !important;
}
html[data-theme="dark"] h7, html[data-theme="dark"] h8, html[data-theme="dark"] h9 {
color: #ffcc00 !important;
}
html[data-theme="dark"] .wy-nav-content a, html[data-theme="dark"] .wy-nav-content a:visited {
color: #ffcc00 !important;
}
EOF
make DOCS_CSS=dark_override.css DOCS_THEME=sphinx_rtd_dark_mode htmldocs
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/90d316e055ef7f4c9021b9eada8f8d3b2e750a66.1638870323.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
When RTD is not installed or when THEME=classic is used, the
produced docs contain some weird selections. As this theme has
several variables to customize it, set them, in order to produce
a nicer output.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/8889380606681a2b7033f73bed9717250302be2a.1638870323.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Instead of having RTD as an almost mandatory theme, allow the
user to select other themes via DOCS_THEME environment var.
There's a catch, though: as the current theme override logic is
dependent of the RTD theme, we need to move the code which
adds the CSS overrides to be inside the RTD theme logic.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/bd20adabfd428fd3cd0e69c2cf146aa354932936.1638870323.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
As described at:
https://stackoverflow.com/questions/23211695/modifying-content-width-of-the-sphinx-theme-read-the-docs
since Sphinx 1.8, the standard way to setup a custom theme is
to use html_css_files. While using html_context is OK with RTD
0.5.2, it doesn't work with 1.0.0, causing the theme to not load,
producing a very weird html.
Tested with:
- Sphinx 1.7.9 + sphinx-rtd-theme 0.5.2
- Sphinx 2.4.4 + sphinx-rtd-theme 0.5.2
- Sphinx 2.4.4 + sphinx-rtd-theme 1.0.0
- Sphinx 4.3.0 + sphinx-rtd-theme 1.0.0
Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Tested-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/80009f0d17ea0840d81e7e16fff6e7677919fdfc.1638004294.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Fancyhdr prior to v4.0 outputs a message per document as follows:
Package Fancyhdr Warning: \headheight is too small (12.0pt):
Make it at least 13.59999pt.
We now make it that large for the rest of the document.
This may cause the page layout to be inconsistent, however.
Fancyhdr v4.0 complains (once a page!) as follows:
Package fancyhdr Warning: \headheight is too small (12.0pt):
(fancyhdr) Make it at least 13.59999pt, for example:
(fancyhdr) \setlength{\headheight}{13.59999pt}.
(fancyhdr) You might also make \topmargin smaller to compensate:
(fancyhdr) \addtolength{\topmargin}{-1.59999pt}.
Related item in fancyhdr v4.0 announcement on 2021-01-04 [1]:
Backward incompatible changes:
- Eliminate adjustments of \headheight or \footskip, when the
header or footer is too high.
[1]: https://www.ctan.org/ctan-ann/id/mailman.2685.1609863692.2532.ctan-ann@ctan.org
Silence the warnings by adding a couple of \addtolength commands in
the preamble.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/c5a5577e-5de8-9cd4-9253-956ccc748417@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
There were typos in the fallback definitions of dummy LaTeX macros
for systems without CJK fonts.
They cause build errors in "make pdfdocs" on such systems.
Fix them.
Fixes: e291ff6f5a ("docs: pdfdocs: Add CJK-language-specific font settings")
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/ad7615a5-f8fa-2bc3-de6b-7ed49d458964@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Quotation marks in "KR" and "JP" variants of Noto CJK fonts are half
width.
xeCJK assumes they are full width by default and does excessive kerning
around them in Korean and Japanese translations.
Give xeCJK proper hints by the \xeCJKDeclareCharClass command.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/0da9e3c5-2716-f576-1df5-2f28ea69f0e8@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Noto CJK fonts don't provide italic shapes.
The AutoFakeSlant option of fontspec and xeCJK packages can be used as
a workaround.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/502335cc-9a95-3c2a-7744-6cc56ecaf628@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
CJK documents are much easier to read with a wider baseline stretch.
Applying onehalfspacing option of "setspace" package looks reasonable.
Note: \usepackage{setspace} needs to be before that of hyperref in the
preamble.
The 'extrapackages' key (available since Sphinx 2.3) is for this purpose.
For systems with Sphinx < 2.3, dummy commands of \onehalfspacing and
\singlespacing are provided instead.
One-half spacing is not effective in LaTeX sources generated by such
revisions of Sphinx.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/547a1f1c-0bb5-20a7-ea0e-951bfc3c3925@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
In Korean typesetting, inter-phrase spaces in Hangul text have
a similar role as the the inter-word spaces in Latin text.
They can be preserved by the \xeCJKsetup{CJKspace=true} option.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/68de2e52-e6d1-3f01-c097-15ba7b28a319@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
"Noto Serif CJK SC" and its variants suit better with the roman font
of Latin letters.
On some distros such as Fedora, it is possible to partially install
"Noto Sans CJK" fonts.
So, if the Serif fonts are not found on the system, fall back to the
Sans fonts.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/5e454140-5d0c-35d4-8c31-3ffb2420793a@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
zh_TW, ko_KR, and ja_JP translations have their preferred glyph sets
different from that of zh_CN.
To switch CJK font in the middle of the translations, introduce custom
LaTeX macros listed below:
\kerneldocBeginSC
\kerneldocEndSC
\kerneldocBeginTC
\kerneldocEndTC
\kerneldocBeginKR
\kerneldocEndKR
\kerneldocBeginJP
\kerneldocEndJP
, and embed a pair of macros in each language's index.rst.
NOTE 1: Update of zh_TW/index.rst is deferred to a follow-up change.
NOTE 2: Custom macros added here do not imply \kerneldocCJK(on|off).
This is intentional. For example, \kerneldocCJKoff needs to be
at the top of Italian translations' index.rst for the footer of
final zh_TW page to be properly typeset.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/31906baf-7490-68cd-7153-4e4d320fb9b0@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
To make generated LaTeX code portable across systems with different sets
of available fonts, convert font-availability check in python code to
LaTeX code by using a conditional command provided by the "fontspec"
package.
This will help those who run Sphinx on one machine/container and run
latexmk on other machines/containers.
Remove import of check_output as it is unused any more.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/4baf88af-316d-8aee-240f-6ccbc20907d7@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sphinx 3.0 works at this point (albeit slowly) so stop scaring people
with a loud warning. We also don't need to babble about CJK support in the
LaTeX build.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Setting a reasonable width to \tymin prevents column squeezing
by tabulary.
Width of 20em works well in almost all the tables still in the
ascii-art format.
Excerpt from tabulary package documentation at [1]:
To stop very narrow columns being too 'squeezed' by this process
any columns that are narrower than \tymin are set to their natural
width.
[1]: https://mirrors.ctan.org/macros/latex/contrib/tabulary/tabulary.pdf
Note: Sphinx has its own default value of \tymin set in
sphinxlatextables.sty (Sphinx 4.0.2) and sphinxmulticell.sty
(Sphinx 2.4.4) as follows:
\setlength{\tymin}{3\fontcharwd\font`0 }
, which is not sufficient for kernel-doc.
Tested against Sphinx versions 2.4.4 and 4.0.2.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/277d68fa-c96a-0ccb-6ce0-4d314851d9fe@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Activating xeCJK in English and Italian-translation documents
results in sub-optimal typesetting with wide-looking apostrophes
and quotation marks.
The xeCJK package provides macros for enabling and disabling its
effect in the middle of a document, namely \makexeCJKactive and
\makexeCJKinactive.
So the goal of this change is to activate xeCJK in the relevant
chapters in translations.
To do this:
o Define custom macros in the preamble depending on the
availability of the "Noto Sans CJK" font so that those
macros can be used regardless of the use of xeCJK package.
o Patch \sphinxtableofcontents so that xeCJK is inactivated
after table of contents.
o Embed those custom macros in each language's index.rst file
as a ".. raw:: latex" construct.
Note: A CJK chapter needs \kerneldocCJKon in front of its chapter
heading, while a non-CJK chapter should have \kerneldocCJKoff
below its chapter heading.
This is to make sure the CJK font is available to CJK chapter's
heading and ending page's footer.
Tested against Sphinx versions 2.4.4 and 4.0.2.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Tested-by: Wu XiangCheng <bobwxc@email.cn>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/lkml/2061da0a-6ab1-35f3-99c1-dbc415444f37@gmail.com
Link: https://lore.kernel.org/r/83208ddc-5de9-b283-3fd6-92c635348ca0@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Changeset f546ff0c0c ("Move our minimum Sphinx version to 1.7")
cleaned up some compatibility issues with previous Sphinx
versions, but it also dropped the PDF margin sets.
Without that, the media documentation won't build fine, as
the margins are too wide to display texts with monospaced
fonts.
While here, align the "latex_elements = {" values, and add
a few other sphinxsetup configs in order to allow Sphinx to
wrap long lines on literal blocks.
Fixes: f546ff0c0c ("Move our minimum Sphinx version to 1.7")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Documentation/conf.py | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
Link: https://lore.kernel.org/r/911fbac185dd09c7df715cf4153361b81f04b7ad.1614787053.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The current documentation build looks like this:
$ make htmldocs
SPHINX htmldocs --> file:///home/willy/kernel/linux-next/Documentation/output
make[2]: Nothing to be done for 'html'.
WARNING: The kernel documentation build process
support for Sphinx v3.0 and above is brand new. Be prepared for
possible issues in the generated output.
$
That extra indentation before my next prompt isn't pretty. This patch
fixes it, but I'm not a pythonista, and maybe there's a better way.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20210215161757.GD2858050@casper.infradead.org
[jc: tweaked for the "better way"]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
As promised, drop support for some ancient sphinx releases, along with a
lot of the cruft that was required to make that support work.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
number of warnings from the once-noisy docs build process is nearly zero.
Getting to this point has required a lot of work; once there, hopefully we
can keep things that way.
I have packaged this as a separate pull because it does a fair amount of
reaching outside of Documentation/. The changes are all in comments and in
code placement. It's all been in linux-next since last week.
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Merge tag 'docs-5.10-warnings' of git://git.lwn.net/linux
Pull documentation build warning fixes from Jonathan Corbet:
"This contains a series of warning fixes from Mauro; once applied, the
number of warnings from the once-noisy docs build process is nearly
zero.
Getting to this point has required a lot of work; once there,
hopefully we can keep things that way.
I have packaged this as a separate pull because it does a fair amount
of reaching outside of Documentation/. The changes are all in comments
and in code placement. It's all been in linux-next since last week"
* tag 'docs-5.10-warnings' of git://git.lwn.net/linux: (24 commits)
docs: SafeSetID: fix a warning
amdgpu: fix a few kernel-doc markup issues
selftests: kselftest_harness.h: fix kernel-doc markups
drm: amdgpu_dm: fix a typo
gpu: docs: amdgpu.rst: get rid of wrong kernel-doc markups
drm: amdgpu: kernel-doc: update some adev parameters
docs: fs: api-summary.rst: get rid of kernel-doc include
IB/srpt: docs: add a description for cq_size member
locking/refcount: move kernel-doc markups to the proper place
docs: lockdep-design: fix some warning issues
MAINTAINERS: fix broken doc refs due to yaml conversion
ice: docs fix a devlink info that broke a table
crypto: sun8x-ce*: update entries to its documentation
net: phy: remove kernel-doc duplication
mm: pagemap.h: fix two kernel-doc markups
blk-mq: docs: add kernel-doc description for a new struct member
docs: userspace-api: add iommu.rst to the index file
docs: hwmon: mp2975.rst: address some html build warnings
docs: net: statistics.rst: remove a duplicated kernel-doc
docs: kasan.rst: add two missing blank lines
...
As we don't want a generic Sphinx extension to execute commands,
change the one proposed to Markus to call the abi_book.pl
script.
Use a script to parse the Documentation/ABI directory and output
it at the admin-guide.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5651482b06500e69a1acdf92152f90a203e6521d.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
