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2019-06-07Documentation: {u,k}probes: add tracing_on before tracingLecopzer Chen2-1/+12
After following the document step by step, the `cat trace` can't be worked without enabling tracing_on and might mislead newbies about the functionality. Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07treewide: trivial: fix s/poped/popped/ typoGeorge G. Davis2-2/+2
Fix a couple of s/poped/popped/ typos. Signed-off-by: George G. Davis <george_davis@mentor.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: xfs: Fix typoShiyang Ruan1-1/+1
In "Y+P" of this line, there are two non-ASCII characters(0xd9 0x8d) following behind the 'Y'. Shown as a small '=' under the '+' in VIM and a '賺' in webpage[1]. I think it's a mistake and remove these strange characters. [1]: https://www.kernel.org/doc/Documentation/filesystems/xfs-delayed-logging-design.txt Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: nvdimm: Fix typoShiyang Ruan1-2/+2
Remove the extra 'we '. Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07doc:it_IT: documentation alignmentFederico Vaga1-9/+8
Documentation alignment for the following changes: a700767a7682 (doc/docs-next) docs: requirements.txt: recommend Sphinx 1.7.9 Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07doc:it_IT: fix file referencesFederico Vaga6-6/+18
Fix italian translation file references based on `scripts/documentation-file-ref-check` output. Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it> Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07scripts/sphinx-pre-install: fix "dependenties" typoBjorn Helgaas1-1/+1
Fix typo ("dependenties" for "dependencies"). Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07docs: clk: fix struct syntaxLuca Ceresoli1-3/+3
The clk_foo_ops struct example has syntax errors. Fix it so it can be copy-pasted and used more easily. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07docs: Kbuild/Makefile: allow check for missing docs at build timeMauro Carvalho Chehab4-0/+29
While this doesn't make sense for production Kernels, in order to avoid regressions when documents are touched, let's add a check target at the make file. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07KVM: arm/arm64: Always capitalize ITSGeert Uytterhoeven1-1/+1
All but one reference is capitalized. Fix the remaining one. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: net: dsa: Grammar s/the its/its/Geert Uytterhoeven1-2/+2
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: tee: Grammar s/the its/its/Geert Uytterhoeven1-1/+1
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: fix typo CLOCK_MONONOTNIC_COARSEAurelien Thierry1-1/+1
Fix typo in documentation file timekeeping.rst: CLOCK_MONONOTNIC_COARSE should be CLOCK_MONOTONIC_COARSE. Signed-off-by: Aurelien Thierry <aurelien.thierry@quoscient.io> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation/dm-init: fix multi device exampleHelen Koike1-7/+7
The example in the docs regarding multiple device-mappers is invalid (it has a wrong number of arguments), it's a left over from previous versions of the patch. Replace the example with an valid and tested one. Signed-off-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-07Documentation: DMA-API: fix a function name of max_mapping_sizeYoshihiro Shimoda1-1/+1
The exported function name is dma_max_mapping_size(), not dma_direct_max_mapping_size() so that this patch fixes the function name in the documentation. Fixes: 133d624b1cee ("dma: Introduce dma_max_mapping_size()") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-06docs/core-api: Add integer power functions to the listAndy Shevchenko1-0/+9
Some times integer power functions, such as int_sqrt(), are needed, but there is nothing about them in the generated documentation. Fill the gap by adding a reference to the corresponding exported functions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-06docs/core-api: Add string helpers API to the listAndy Shevchenko1-0/+3
Some times string helpers are needed, but there is nothing about them in the generated documentation. Fill the gap by adding a reference to string_helpers.c exported functions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-06Merge branch 'vfs' into docs-nextJonathan Corbet3-1268/+1429
Work from Tobin Harding: Here is an updated version of the VFS doc conversion. This series in no way represents a final point for the VFS documentation rather it is a small step towards getting VFS docs updated. This series does not update the content of vfs.txt, only does formatting.
2019-06-06docs: filesystems: vfs: Render method descriptionsTobin C. Harding1-505/+642
Currently vfs.rst does not render well into HTML the method descriptions for VFS data structures. We can improve the HTML output by putting the description string on a new line following the method name. Suggested-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-04docs: Completely fix the remote build tree caseJonathan Corbet1-5/+5
My previous fix miserably failed to catch all of the invocations of "./scripts/sphinx-pre-install", so we got build errors. Try again with more caffeine. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-31docs: look for sphinx-pre-install in the source treeJonathan Corbet1-1/+1
Recent makefile changes included an invocation of ./scripts/sphinx-pre-install. Unfortunately, that fails when a separate build directory is in use with: /bin/bash: ./scripts/sphinx-pre-install: No such file or directory Use $(srctree) to fully specify the location of this script. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: requirements.txt: recommend Sphinx 1.7.9Mauro Carvalho Chehab2-11/+10
As discussed at the linux-doc ML, while we'll still support version 1.3, it is time to recommend a more modern version. So, let's switch the minimal requirements to Sphinx 1.7.9, as it has the "-jauto" flag, with makes a lot faster when building documentation. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: by default, build docs a lot faster with Sphinx >= 1.7Mauro Carvalho Chehab1-0/+2
Since Sphinx version 1.7, it is possible to use "-jauto" in order to speedup documentation builds. On older versions, while -j was already supported, one would need to set the number of threads manually. So, if SPHINXOPTS is not provided, add -jauto, in order to speed up the build. That makes it *a lot* times faster than without -j. If one really wants to slow things down, it can just use: make SPHINXOPTS=-j1 htmldocs Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> [ jc: fixed perl magic to determine sphinx version ] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/documentation-file-ref-check: teach about .txt -> .yaml renamesMauro Carvalho Chehab1-5/+14
At DT, files are being renamed to jason. Teach the script how to handle such renames when used in fix mode. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/documentation-file-ref-check: improve tools ref handlingMauro Carvalho Chehab1-1/+1
There's a false positive on perf/util: tools/perf/util/s390-cpumsf.c: Documentation/perf.data-file-format.txt The file is there at tools/perf/Documentation/, but the logic with detects relative documentation references inside tools is not capable of detecting it. So, improve it. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/documentation-file-ref-check: exclude false-positivesMauro Carvalho Chehab1-0/+13
There are at least two cases where a documentation file was gone for good, but the text still mentions it: 1) drivers/vhost/vhost.c: the reference for Documentation/virtual/lguest/lguest.c is just to give credits to the original work that vhost replaced; 2) Documentation/scsi/scsi_mid_low_api.txt: It gives credit and mentions the old Documentation/Configure.help file that used to be part of Kernel 2.4.x As we don't want to keep the script to keep pinpoint to those every time, let's add a logic at the script to allow it to ignore valid false-positives like the above. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/documentation-file-ref-check: better handle translationsMauro Carvalho Chehab1-3/+7
Only seek for translation renames inside the translation directory. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/sphinx-pre-install: always check if version is compatible with buildMauro Carvalho Chehab2-13/+32
Call the script every time a make docs target is selected, on a simplified check mode. With this change, the script will set two vars: $min_version - obtained from `needs_sphinx` var inside conf.py (currently, '1.3') $rec_version - obtained from sphinx/requirements.txt. With those changes, a target like "make htmldocs" will do: 1) If no sphinx-build/sphinx-build3 is found, it will run the script on normal mode as before, checking for all system dependencies and providing install hints for the needed programs and will abort the build; 2) If no sphinx-build/sphinx-build3 is found, but there is a sphinx_${VER}/bin/activate file, and if ${VER} >= $min_version (string comparation), it will run in full mode, and will recommend to activate the virtualenv. If there are multiple virtualenvs, it will string sort the versions, recommending the highest version and will abort the build; 3) If Sphinx is detected but has a version lower than $min_version, it will run in full mode - with will recommend creating a virtual env using sphinx/requirements.txt, and will abort the build. 4) If Sphinx is detected and version is lower than $rec_version, it will run in full mode and will recommend creating a virtual env using sphinx/requirements.txt. In this case, it **won't** abort the build. 5) If Sphinx is detected and version is equal or righer than $rec_version it will return just after detecting the version ("quick mode"), not checking if are there any missing dependencies. Just like before, if one wants to install Sphinx from the distro, it has to call the script manually and use `--no-virtualenv` argument to get the hints for his OS: You should run: sudo dnf install -y python3-sphinx python3-sphinx_rtd_theme While here, add a small help for the three optional arguments for the script. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/sphinx-pre-install: get rid of RHEL7 explicity checkMauro Carvalho Chehab1-13/+0
RHEL8 was already launched. This test won't get it, and will do the wrong thing. Ok, we could fix it, but now we check Sphinx version to ensure that it matches the minimal (1.3), so there's no need for an explicit check there. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30scripts/sphinx-pre-install: make activate hint smarterMauro Carvalho Chehab1-8/+14
It is possible that multiple Sphinx virtualenvs are installed on a given kernel tree. Change the logic to get the latest version of those, as this is probably what the user wants. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Convert vfs.txt to RSTTobin C. Harding2-281/+299
vfs.txt is currently stale. If we convert it to RST this is a good first step in the process of getting the VFS documentation up to date. This patch does the following (all as a single patch so as not to introduce any new SPHINX build warnings) - Use '.. code-block:: c' for C code blocks and indent the code blocks. - Use double backticks for struct member descriptions. - Fix a couple of build warnings by guarding pointers (*) with double backticks .e.g ``*ptr``. - Add vfs to Documentation/filesystems/index.rst The member descriptions paragraph indentation was not touched. It is not pretty but these do not cause build warnings. These descriptions all need updating anyways so leave it as it is for now. Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Convert spaces to tabsTobin C. Harding1-62/+62
There are bunch of places with 8 spaces, in preparation for correctly indenting all code snippets (during conversion to RST) change these to use tabspaces. This patch is whitespace only. Convert instances of 8 consecutive spaces to a single tabspace. Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Fix pre-amble indentationTobin C. Harding1-3/+3
Currently file pre-amble contains custom indentation. RST is not going to like this, lets left-align the text. Put the copyright notices in a list in preparation for converting document to RST. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Use SPDX identifierTobin C. Harding1-2/+2
Currently the licence is indicated via a custom string. We have SPDX license identifiers now for this task. Use SPDX license identifier matching current license string. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Use correct initial headingTobin C. Harding1-2/+3
Kernel RST has a preferred heading adornment scheme. Currently all the heading adornments follow this scheme except the document heading. Use correct heading adornment for initial heading. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Use uniform spacing around headingsTobin C. Harding1-0/+9
Currently spacing before and after headings is non-uniform. Use two blank lines before a heading and one after the heading. Use uniform spacing around headings. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Use 72 character column widthTobin C. Harding1-101/+97
In preparation for conversion to RST format use the kernels favoured documentation column width. If we are going to do this we might as well do it thoroughly. Just do the paragraphs (not the indented stuff), the rest will be done during indentation fix up patch. This patch is whitespace only, no textual changes. Use 72 character column width for all paragraph sections. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Use uniform space after period.Tobin C. Harding1-123/+123
Currently sometimes document has a single space after a period and sometimes it has double. Whichever we use it should be uniform. Use double space after period, be uniform. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: filesystems: vfs: Remove space before tabTobin C. Harding1-39/+39
Currently the file has a bunch of spaces before tabspaces. This is a nuisance when patching the file because they show up whenever we touch these lines. Let's just fix them all now in preparation for doing the RST conversion. Remove spaces before tabspaces. Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30doc: kernel-parameters.txt: fix documentation of nmi_watchdog parameterZhenzhong Duan1-2/+3
The default behavior of hardlockup depends on the config of CONFIG_BOOTPARAM_HARDLOCKUP_PANIC. Fix the description of nmi_watchdog to make it clear. Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kees Cook <keescook@chromium.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-doc@vger.kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: tracing: Fix typos in histogram.rstMasanari Iida1-5/+5
This patch fixes some spelling typos in histogram.rst Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-30docs: cdomain.py: get rid of a warning since version 1.8Mauro Carvalho Chehab1-1/+4
There's a new warning about a deprecation function. Add a logic at cdomain.py to avoid that. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-28kernel-doc: always name missing kerneldoc sectionsJonathan Corbet1-7/+9
The "no structured comments found" warning is not particularly useful if there are several invocations, one of which is looking for something wrong. So if something specific has been requested, make it clear that it's the one we weren't able to find. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-25docs: No structured comments in include/linux/interconnect.hJonathan Corbet1-3/+2
Remove the kernel-doc directive for this file, since there's nothing there and it generates a warning. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-25docs: no structured comments in fs/file_table.cJonathan Corbet1-3/+0
Remove the kernel-doc directive, since there are only warnings to be found there. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-25docs: No structured comments in target_core_device.cJonathan Corbet1-2/+2
Documentation/driver-api/target.rst is seeking kerneldoc comments in drivers/target/target_core_device.c, but no such comments exist. Take out the kernel-doc directive and eliminate one warning from the build. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-24docs: Do not seek kerneldoc comments in hw-consumer.hJonathan Corbet1-1/+0
There are no kerneldoc comments here, so looking for them just yields a warning in the docs build. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-24docs: Fix a misdirected kerneldoc directiveJonathan Corbet1-1/+1
The stratix10 service layer documentation tried to include a kerneldoc comments for a nonexistent struct; leading to a "no structured comments found" message. Switch it to stratix10_svc_command_config_type, which appears at that spot in the sequence and was not included. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-24docs: Do not seek comments in kernel/rcu/tree_plugin.hJonathan Corbet2-5/+0
There are no kerneldoc comments in this file, so do not attempt to include them in the docs build. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-24drm/i915: Maintain consistent documentation subsection orderingJonathan Corbet2-4/+4
With Sphinx 2.0 (or prior versions with the deprecation warnings fixed) the docs build fails with: Documentation/gpu/i915.rst:403: WARNING: Title level inconsistent: Global GTT Fence Handling ~~~~~~~~~~~~~~~~~~~~~~~~~ reST markup error: Documentation/gpu/i915.rst:403: (SEVERE/4) Title level inconsistent: I "fixed" it by changing the subsections in i915.rst, but that didn't seem like the correct change. It turns out that a couple of i915 files create their own subsections in kerneldoc comments using apostrophes as the heading marker: Layout '''''' That breaks the normal subsection marker ordering, and newer Sphinx is rather more strict about enforcing that ordering. So fix the offending comments to make Sphinx happy. (This is unfortunate, in that kerneldoc comments shouldn't need to be aware of where they might be included in the heading hierarchy, but I don't see a better way around it). Cc: stable@vger.kernel.org # v4.14+ Acked-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>