Fixes: 09e7d4ed ("docs: Add Generic Counter interface documentation")
Signed-off-by: NMarcus Folkesson <marcus.folkesson@gmail.com>
Acked-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

When using the automarkup extension with:
	make pdfdocs

without passing an specific book, the code will raise an exception:

	  File "/devel/v4l/docs/Documentation/sphinx/automarkup.py", line 86, in auto_markup
	    node.parent.replace(node, markup_funcs(name, app, node))
	  File "/devel/v4l/docs/Documentation/sphinx/automarkup.py", line 59, in markup_funcs
	    'function', target, pxref, lit_text)
	  File "/devel/v4l/docs/sphinx_2.0/lib/python3.7/site-packages/sphinx/domains/c.py", line 308, in resolve_xref
	    contnode, target)
	  File "/devel/v4l/docs/sphinx_2.0/lib/python3.7/site-packages/sphinx/util/nodes.py", line 450, in make_refnode
	    '#' + targetid)
	  File "/devel/v4l/docs/sphinx_2.0/lib/python3.7/site-packages/sphinx/builders/latex/__init__.py", line 159, in get_relative_uri
	    return self.get_target_uri(to, typ)
	  File "/devel/v4l/docs/sphinx_2.0/lib/python3.7/site-packages/sphinx/builders/latex/__init__.py", line 152, in get_target_uri
	    raise NoUri
	sphinx.environment.NoUri

This happens because not all references will belong to a single
PDF/LaTeX document.

Better to just ignore those than breaking Sphinx build.

Fixes: d74b0d31 ("Docs: An initial automarkup extension for sphinx")
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
[jc: Narrowed the "except" and tweaked the comment]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The documentation is more appropriate for the administrator than for
the internal kernel API section it is currently in.
Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: NChristian Brauner <christian@brauner.io>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The handling of dashes in particular results in confusing
documentation in a number of instances, since "--" becomes an
en-dash. This disables SmartyPants wholesale, losing smart quotes
along with smart dashes.

With Sphinx 1.6 we could fine-tune the conversion, using the new
smartquotes and smartquotes_action settings.
Signed-off-by: NStephen Kitt <steve@sk2.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The UP.rst file calls for locks acquired within RCU callback functions
to use _irq variants (spin_lock_irqsave() or similar), which does work,
but can be overkill.  This commit therefore instead calls for _bh variants
(spin_lock_bh() or similar), while noting that _irq does work.
Signed-off-by: NPaul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The current ReStructuredText formatting results in "--", used to
indicate the end of the kernel command-line parameters, appearing as
an en-dash instead of two hyphens; this patch formats them as code,
"``--``", as done elsewhere in the documentation.
Signed-off-by: NStephen Kitt <steve@sk2.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

fix the disjunction by replacing "of" with "or".
Signed-off-by: NSheriff Esseson <sheriffesseson@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Bring in (finally) automatic markup of function() so we need not load up
our docs with ugly c:func: annotations.

Changeset 163ede97 ("Documentation: platform: Delete x86-laptop-drivers.txt")
removed the x86-laptop-drivers.txt file, but forgot to update its
Kconfig.

Fixes: 163ede97 ("Documentation: platform: Delete x86-laptop-drivers.txt")
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

We should really move the RCU directory there as well, but that can wait
for another day.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add TOC tree hooks for:
  - rcu
  - listRCU
  - UP
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Rename the following files to reST:
  - rcu.txt
  - listRCU.txt
  - UP.txt
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

RCU UP systems reST markup.
Reviewed-by: NJoel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

RCU linked list reST markup.
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

RCU basic concepts reST markup.
Reviewed-by: NJoel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: NJiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

There's no need to use a .rst on Sphinx toc tables. As most of
the Documentation don't use, remove the remaing occurrences.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Build of htmldocs fails for out-of-tree builds:

$ make V=1 O=~/build/kernel/ htmldocs
make -C /home/rppt/build/kernel -f /home/rppt/git/linux-docs/Makefile htmldocs
make[1]: Entering directory '/home/rppt/build/kernel'
make -f /home/rppt/git/linux-docs/scripts/Makefile.build obj=scripts/basic
rm -f .tmp_quiet_recordmcount
make -f /home/rppt/git/linux-docs/scripts/Makefile.build obj=Documentation htmldocs
Can't open Documentation/conf.py at /home/rppt/git/linux-docs/scripts/sphinx-pre-install line 230.
/home/rppt/git/linux-docs/Documentation/Makefile:80: recipe for target 'htmldocs' failed
make[2]: *** [htmldocs] Error 2

The scripts/sphinx-pre-install is trying to open files in the current
directory which is $KBUILD_OUTPUT rather than in $srctree.

Fix it.
Signed-off-by: NMike Rapoport <rppt@linux.ibm.com>
Reviewed-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Somehow, this file ended with Documentation/ twice.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Newer devices like Yubikey 5 and Nitrokey Pro 2 have added support for
NISTP's implementation of ECC cryptography, so update the guide
accordingly and add a note on when to use nistp256 and when to use
ed25519 for generating S keys.
Signed-off-by: NKonstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add documentation for Spectre vulnerability and the mitigation mechanisms:

- Explain the problem and risks
- Document the mitigation mechanisms
- Document the command line controls
- Document the sysfs files
Co-developed-by: NAndi Kleen <ak@linux.intel.com>
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Co-developed-by: NTim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: NTim Chen <tim.c.chen@linux.intel.com>
Reviewed-by: NRandy Dunlap <rdunlap@infradead.org>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The list of laptops supported by drivers in PDx86 subsystem is quite
big and growing. x86-laptop-drivers.txt contains details of very few
laptop models. Remove it because it does not  serve any purpose.
Signed-off-by: NPuranjay Mohan <puranjay12@gmail.com>
Acked-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Now that we can mark up function() automatically, there is no reason to use
:c:func: and every reason to avoid it.  Adjust the documentation to reflect
that fact.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

We now have better automarkup in sphinx itself and, besides, this markup
was incorrect and left :c:func: gunk in the processed docs.  Sort of
discouraging that nobody ever noticed...:)

As a first step toward the removal of impenetrable regex magic from
kernel-doc it's a tiny one, but you have to start somewhere.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Now that the build system automatically marks up function references, we
don't have to clutter the source files, so take it out.

[Some paragraphs could now benefit from refilling, but that was left out to
avoid obscuring the real changes.]
Acked-by: NMatthew Wilcox <willy@infradead.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Rather than fill our text files with :c:func:`function()` syntax, just do
the markup via a hook into the sphinx build process.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

"git diff" says:

    \ No newline at end of file

after modifying the file.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

These are all obvious typos.
Signed-off-by: NJames Morse <james.morse@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

"If the MBA is specified in MB then user can enter the max b/w in MB"
is a tautology. How can the user know if the schemata takes a percentage
or a MB/s value?

This is referring to whether the software controller is interpreting
the schemata's value. Make this clear.
Signed-off-by: NJames Morse <james.morse@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

"L2 cache does not support code and data prioritization". This isn't
true, elsewhere the document says it can be enabled with the cdpl2
mount option.

While we're here, these sample strings have lower-case code/data,
which isn't how the kernel exports them.
Signed-off-by: NJames Morse <james.morse@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Since commit 4d05bf71 ("x86/resctrl: Introduce AMD QOS feature")
resctrl has supported non-contiguous cache bit masks. The interface
for this is currently try-it-and-see.

Update the documentation to say Intel CPUs have this requirement,
instead of X86.

Cc: Babu Moger <Babu.Moger@amd.com>
Signed-off-by: NJames Morse <james.morse@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The asterisks prepended to the quoted text currently get translated to
bullet points, which gets increasingly confusing the smaller your
screen is (when viewing the sphinx output, that is).

Convert the whole quote to a literal block.
Signed-off-by: NValentin Schneider <valentin.schneider@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Since strlcpy is deprecated, the documentation shouldn't suggest using
it. This patch fixes the examples to use strscpy instead. It also uses
sizeof instead of underlying constants as far as possible, to simplify
future changes to the corresponding data structures.
Signed-off-by: NStephen Kitt <steve@sk2.org>
Acked-by: NKees Cook <keescook@chromium.org>
Acked-by: NFederico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

In order for a list to be recognized as such, blank lines
are required.

Solve those Sphinx warnings:

./lib/list_sort.c:162: WARNING: Unexpected indentation.
./lib/list_sort.c:163: WARNING: Block quote ends without a blank line; unexpected unindent.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Sphinx expects a blank line after a literal block markup.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: NMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The new font is available since recently.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Acked-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Every merge window seems to involve at least one episode where subsystem
maintainers don't manage their trees as Linus would like.  Document the
expectations so that at least he has something to point people to.
Acked-by: NDavid Rientjes <rientjes@google.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Since commit 5b18b5a7 ("block: delete part_round_stats and switch to
less precise counting") io_ticks is approximated by adding one at each
start and end of requests if jiffies has changed.

This works perfectly for requests shorter than a jiffy. If requests runs
more than 2 jiffies some I/O time will not be accounted unless there are
other reuqests.
Signed-off-by: NKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

powerpc architecture (both 64-bit and 32-bit) supports stack protector
mechanism since some time now [see commit 06ec27ae ("powerpc/64:
add stack protector support")].

Update stackprotector arch support documentation to reflect the same.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: NBhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Update the documentation to reflect the new naming scheme with
latest changes.
Reported-by: NLeo Yan <leo.yan@linaro.org>
Reviewed-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

There's a paragraph that explains how to create fixed width text block,
but it doesn't explains how to create fixed width text inline, although
this feature is really used through the documentation. Fix that adding a
quick note about it.
Signed-off-by: NAndré Almeida <andrealmeid@collabora.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>