Commit Graph

37 Commits

Author SHA1 Message Date
Mauro Carvalho Chehab 142a0e11b5 Merge tag 'docs-next' of git://git.lwn.net/linux.git into patchwork
Merge back from docs-next in order to get the cdomain extension.

With such extension, the number of warnings when building docs
in nitpick mode reduced from 22 to 2 warnings.

* docs-next/docs-next:
  docs/driver-model: fix typo
  DMA-API-HOWTO: <asm/generic/scatterlist.h> is no more
  doc-rst:c-domain: function-like macros arguments
  doc-rst:c-domain: fix sphinx version incompatibility
  Documentation/filesystems: Fixed typo
  docs: Don't format internal MPT docs
  docs: split up serial-interfaces.rst
  docs: Pull the HSI documentation together
  docs: Special-case function-pointer parameters in kernel-doc
  docs: make kernel-doc handle varargs properly
  x86: fix memory ranges in mm documentation
  documentation/scsi: Remove nodisconnect parameter
  doc: ioctl: Add some clarifications to botching-up-ioctls
  docs: split up the driver book
  Docs: sphinxify device-drivers.tmpl
2016-09-19 16:36:41 -03:00
Markus Heiser 56cd869288 doc-rst:c-domain: function-like macros arguments
Handle signatures of function-like macros well. Don't try to deduce
arguments types of function-like macros.

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-09-16 09:53:40 -06:00
Markus Heiser b495360e30 doc-rst:c-domain: fix sphinx version incompatibility
The self.indexnode's tuple has changed in sphinx version 1.4, from a
former 4 element tuple to a 5 element tuple.

https://github.com/sphinx-doc/sphinx/commit/e6a5a3a92e938fcd75866b4227db9e0524d58f7c

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-09-16 09:53:23 -06:00
Mauro Carvalho Chehab 22c4003364 [media] docs-rst: parse-headers.pl: use the C domain for cross-references
Instead of keep using the normal reference, move to the C
domain ones. Using C domains everywhere will allow
cross-references between kAPI and uAPI docs.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-09-09 09:20:27 -03:00
Mauro Carvalho Chehab bcec7c218d [media] docs-rst: parse-headers.pl: make debug a command line option
Add a parser for the --debug option, in order to allow
seeing what the parser is doing.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-09-09 09:20:06 -03:00
Markus Heiser b62b9d81a0 docs: sphinx-extensions: add metadata parallel-safe
The setup() function of a Sphinx-extension can return a dictionary. This
is treated by Sphinx as metadata of the extension [1].

With metadata "parallel_read_safe = True" a extension is marked as
save for "parallel reading of source". This is needed if you want
build in parallel with N processes. E.g.:

  make SPHINXOPTS=-j4 htmldocs

will no longer log warnings like:

  WARNING: the foobar extension does not declare if it is safe for
  parallel reading, assuming it isn't - please ask the extension author
  to check and make it explicit.

Add metadata to extensions:

* kernel-doc
* flat-table
* kernel-include

[1] http://www.sphinx-doc.org/en/stable/extdev/#extension-metadata

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Tested-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-09-01 08:19:02 -06:00
Markus Heiser 556aa6d5d9 doc-rst: moved *duplicate* warnings to nitpicky mode
Moved the *duplicate C object description* warnings for function
declarations in the nitpicky mode. In nitpick mode, you can suppress
those warnings (e.g. ioctl) with::

  nitpicky = True
  nitpick_ignore = [
      ("c:func", "ioctl"),
  ]

See Sphinx documentation for the config values for ``nitpick`` and
``nitpick_ignore`` [1].

With this change all the ".. cpp:function:: int ioctl(..)" descriptions
(found in the media book) can be migrated to ".. c:function:: int
ioctl(..)", without getting any warnings. E.g.::

  .. cpp:function:: int ioctl( int fd, int request, struct cec_event *argp )

  .. c:function:: int ioctl( int fd, int request, struct cec_event *argp )

The main effect, is that we get those *CPP-types* back into Sphinx's C-
namespace and we need no longer to distinguish between c/cpp references,
when we refer a function like the ioctl.

[1] http://www.sphinx-doc.org/en/stable/config.html?highlight=nitpick#confval-nitpicky

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-22 15:19:38 -06:00
Markus Heiser 2c645cd7c4 doc-rst:c-domain: ref-name of a function declaration
Add option 'name' to the "c:function:" directive.  With option 'name'
the ref-name of a function can be modified. E.g.::

    .. c:function:: int ioctl( int fd, int request )
       :name: VIDIOC_LOG_STATUS

The func-name (e.g. ioctl) remains in the output but the ref-name
changed from ``ioctl`` to ``VIDIOC_LOG_STATUS``. The index entry for
this function is also changed to ``VIDIOC_LOG_STATUS`` and the function
can now referenced by::

    :c:func:`VIDIOC_LOG_STATUS`

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-22 15:19:22 -06:00
Markus Heiser e8f5c617f2 doc-rst: add boilerplate to customize c-domain
Add a sphinx-extension to customize the sphinx c-domain.  No functional
changes right yet, just the boilerplate code.

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
[ jc: coding-style tweak ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-22 15:19:15 -06:00
Mauro Carvalho Chehab 999d998eee docs-rst: parse-heraders.pl: escape LaTeX characters
Let's escape the LaTeX characters, to avoid troubles when
outputing them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-18 16:42:07 -06:00
Markus Heiser 606b9ac81a doc-rst: generic way to build only sphinx sub-folders
Add a generic way to build only a reST sub-folder with or
without a individual *build-theme*.

* control *sub-folders* by environment SPHINXDIRS
* control *build-theme* by environment SPHINX_CONF

Folders with a conf.py file, matching $(srctree)/Documentation/*/conf.py
can be build and distributed *stand-alone*. E.g. to compile only the
html of 'media' and 'gpu' folder use::

  make SPHINXDIRS="media gpu" htmldocs

To use an additional sphinx-build configuration (*build-theme*) set the
name of the configuration file to SPHINX_CONF. E.g. to compile only the
html of 'media' with the *nit-picking* build use::

  make SPHINXDIRS=media SPHINX_CONF=conf_nitpick.py htmldocs

With this, the Documentation/conf.py is read first and updated with the
configuration values from the Documentation/media/conf_nitpick.py.

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-14 11:51:51 -06:00
Mauro Carvalho Chehab 7e5b7d1b3a Merge branch 'docs-next' of git://git.lwn.net/linux into topic/docs-next
* 'docs-next' of git://git.lwn.net/linux:
  doc-rst: kernel-doc: fix handling of address_space tags
  Revert "doc/sphinx: Enable keep_warnings"
  doc-rst: kernel-doc directive, fix state machine reporter
  docs: deprecate kernel-doc-nano-HOWTO.txt
  doc/sphinx: Enable keep_warnings
  Documentation: add watermark_scale_factor to the list of vm systcl file
  kernel-doc: Fix up warning output
  docs: Get rid of some kernel-documentation warnings
2016-07-23 07:55:59 -03:00
Markus Heiser f42ddca7be doc-rst: kernel-doc directive, fix state machine reporter
Add a reporter replacement that assigns the correct source name and line
number to a system message, as recorded in a ViewList.

[1] http://mid.gmane.org/CAKMK7uFMQ2wOp99t-8v06Om78mi9OvRZWuQsFJD55QA20BB3iw@mail.gmail.com

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Tested-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-07-20 16:51:12 -06:00
Mauro Carvalho Chehab fb6fc6c9ac doc-rst: parse-headers: remove trailing spaces
The function that replace references add a "\ " at the end of
references, to avoid the ReST markup parser to not identify
them as references. That works fine except for the end of lines,
as a sequence of { '\', ' ', '\n' } characters makes Sphinx
to ignore the end of line. So, strip those escape/spaces at the
end of lines.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-09 09:42:31 -03:00
Markus Heiser 037763785a doc-rst: add kernel-include directive
The kernel-include directive is needed to include the auto generated rst
content from a build (pre-) process. E.g. the linux_tv Makefile
generates intermediate reST-files from header files. Since there is a O=
option:

  make O=dir [targets] Locate all output files in "dir"

We need to include intermediate reST files from arbitrary (O=/tmp/foo)
locations:

The 'kernel-include' reST-directive is a replacement for the 'include'
directive. The 'kernel-include' directive expand environment variables
in the path name and allows to include files from arbitrary locations.

.. hint::

  Including files from arbitrary locations (e.g. from '/etc') is a
  security risk for builders. This is why the 'include' directive from
  docutils *prohibit* pathnames pointing to locations *above* the
  filesystem tree where the reST document with the include directive is
  placed.

Substrings of the form $name or ${name} are replaced by the value of
environment variable name. Malformed variable names and references to
non-existing variables are left unchanged.

Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-08 09:31:04 -03:00
Mauro Carvalho Chehab 153234c47c doc-rst: parse-headers: don't do substituition references
Add one extra escape character to avoid those warnings:
	Documentation/linux_tv/videodev2.h.rst:6: WARNING: Inline substitution_reference start-string without end-string.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 15:13:17 -03:00
Mauro Carvalho Chehab 526b884831 doc-rst: parse-headers: add an option to ignore enum symbols
At videodev2.h, we have hundreds of symbols that don't
currently have a reference yet. Let's ignore for how, while
we don't improve those cross-refs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 15:13:07 -03:00
Mauro Carvalho Chehab 034e6c8e72 doc-rst: parse-headers: better handle comments at the source code
We should not let comments to mangle with the symbols
parsing. Unfortunately, videodev2.h has lots of those
in the middle of enums and structs. So, we need to improve
our parser to discard them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 15:12:48 -03:00
Mauro Carvalho Chehab 4ff916a0c9 doc-rst: parse-headers: fix multiline typedef handler
The typedef handler should do two things to be generic:
  1) parse typedef enums;
  2) accept both possible syntaxes:
	 typedef struct foo { .. } foo_t;
	 typedef struct { .. } foo_t;

Unfortunately, this is needed to parse some legacy DVB
files, like dvb/audio.h.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 08:12:57 -03:00
Mauro Carvalho Chehab 6c4c7dadb4 doc-rst: parse-headers: better handle typedefs
When typedef is used on its multiline format, we need to
also parse enum and struct in the same line.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 07:22:20 -03:00
Mauro Carvalho Chehab 9c80c74563 doc-rst: parse-headers: be more formal about the valid symbols
Be more formal about the valid symbols that are expected by
the parser, to match what c language expects.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 07:08:32 -03:00
Mauro Carvalho Chehab 9afe51129b doc-rst: fix parsing comments and '{' on a separate line
The dmx.h header has two things that causes the parser to
break while handling enums:
 per-header enums and the '{' starts on a new line

Both makes the parser to get lexical marks to be detected
as if they were symbols.

Fix it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 06:54:00 -03:00
Mauro Carvalho Chehab 7d95fa8d66 doc-dst: parse-headers: highlight deprecated comments
When something is deprecated, highlight it, as we want it
to be clearer to the reader.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 06:36:46 -03:00
Mauro Carvalho Chehab 6fe79d1ede doc-rst: parse-headers: improve delimiters to detect symbols
As we had to escape the symbols for the ReST markup to not do
the wrong thing, the logic to discover start/end of strings
are not trivial. Improve the end delimiter detection, in order
to highlight more occurrences of the strings.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 06:36:46 -03:00
Mauro Carvalho Chehab dabf8be33b doc-rst: add parse-headers.pl script
This script parses a header file and converts it into a
parsed-literal block, creating references for ioctls,
defines, typedefs, enums and structs.

It also allow an external file to modify the rules, in
order to fix the expressions.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-07 05:53:06 -03:00