Jonathan Corbet [Fri, 16 Sep 2016 16:09:43 +0000 (10:09 -0600)]
Merge branch 'doc/4.9' into docs-next
Jonathan Corbet [Fri, 16 Sep 2016 16:04:25 +0000 (10:04 -0600)]
Merge branch 'driver-api' into doc/4.9
This short series convers device-drivers.tmpl into the RST format, splits
it up, and sets up the result under Documentation/driver-api/. For added
fun, I've taken one top-level file (hsi.txt) and folded it into the
document as a way of showing the direction I'm thinking I would like things
to go. There is plenty more of this sort of work that could be done, to
say the least - this is just a beginning!
The formatted results can be seen at:
http://static.lwn.net/kerneldoc/driver-api/index.html
As part of the long-term task to turn Documentation/ into less of a horror
movie, I'd like to collect documentation of the driver-specific API here.
Arguably gpu/ and the media API stuff should eventually move here, though
we can discuss the color of that particular shed some other day.
Meanwhile, I'd appreciate comments on the general idea.
Laurent Navet [Thu, 15 Sep 2016 20:49:53 +0000 (22:49 +0200)]
docs/driver-model: fix typo
No need to be be, just be should be sufficient.
Signed-off-by: Laurent Navet <laurent.navet@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Christoph Hellwig [Sun, 11 Sep 2016 13:58:53 +0000 (15:58 +0200)]
DMA-API-HOWTO: <asm/generic/scatterlist.h> is no more
So don't mention it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Wed, 7 Sep 2016 07:12:57 +0000 (09:12 +0200)]
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>
Markus Heiser [Wed, 7 Sep 2016 07:12:56 +0000 (09:12 +0200)]
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>
Robert Foss [Thu, 8 Sep 2016 22:44:23 +0000 (18:44 -0400)]
Documentation/filesystems: Fixed typo
Fixed a -> an typo.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Tue, 6 Sep 2016 13:22:03 +0000 (07:22 -0600)]
docs: Don't format internal MPT docs
This is the driver API document, so the internal stuff is just noise here.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Tue, 6 Sep 2016 13:15:24 +0000 (07:15 -0600)]
docs: split up serial-interfaces.rst
It never made sense to keep these documents together; move each into its
own file.
Drop the section numbering on hsi.txt on its way to its own file.
Suggested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sat, 20 Aug 2016 19:24:56 +0000 (13:24 -0600)]
docs: Pull the HSI documentation together
The HSI subsystem documentation was split across hsi.txt and the
device-drivers docbook. Now that the latter has been converted to Sphinx,
pull in the HSI document so that it's all in one place.
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Tue, 6 Sep 2016 14:43:30 +0000 (08:43 -0600)]
Merge branch 'doc/4.9' into docs-next
Jonathan Corbet [Wed, 24 Aug 2016 22:31:15 +0000 (16:31 -0600)]
docs: Special-case function-pointer parameters in kernel-doc
Add yet another regex to kernel-doc to trap @param() references separately
and not produce corrupt RST markup.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Fri, 26 Aug 2016 13:14:08 +0000 (07:14 -0600)]
docs: make kernel-doc handle varargs properly
As far as I can tell, the handling of "..." arguments has never worked
right, so any documentation provided was ignored in favor of "variable
arguments." This makes kernel-doc handle "@...:" as documented. It does
*not* fix spots in kerneldoc comments that don't follow that convention,
but they are no more broken than before.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Lorenzo Stoakes [Tue, 23 Aug 2016 08:00:45 +0000 (09:00 +0100)]
x86: fix memory ranges in mm documentation
This is a trivial fix to correct upper bound addresses to always be
inclusive. Previously, the majority of ranges specified were inclusive with a
small minority specifying an exclusive upper bound. This patch fixes this
inconsistency.
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Finn Thain [Sat, 27 Aug 2016 02:29:59 +0000 (12:29 +1000)]
documentation/scsi: Remove nodisconnect parameter
The driver that used the 'nodisconnect' parameter was removed in
commit
565bae6a4a8f ("[SCSI] 53c7xx: kill driver"). Related documentation
was cleaned up in commit
f37a7238d379 ("[SCSI] 53c7xx: fix removal
fallout"), except for the remaining two mentions that are removed here.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Laura Abbott [Fri, 2 Sep 2016 22:42:24 +0000 (15:42 -0700)]
doc: ioctl: Add some clarifications to botching-up-ioctls
- The guide currently says to pad the structure to a multiple of
64-bits. This is not necessary in cases where the structure contains
no 64-bit types. Clarify this concept to avoid unnecessary padding.
- When using __u64 to hold user pointers, blindly trying to do a cast to
a void __user * may generate a warning on 32-bit systems about a cast
from an integer to a pointer of different size. There is a macro to
deal with this which hides an ugly double cast. Add a reference to
this macro.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Thu, 1 Sep 2016 14:56:20 +0000 (08:56 -0600)]
Merge branch 'doc/4.9' into docs-next
Markus Heiser [Wed, 24 Aug 2016 15:36:15 +0000 (17:36 +0200)]
doc-rst: define PDF's of the media folder
To build only the PDF of the media folder run::
make SPHINXDIRS=media pdfdocs
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Wed, 24 Aug 2016 15:36:14 +0000 (17:36 +0200)]
doc-rst: generic way to build PDF of sub-folders
This extends the method to build only sub-folders to the targets
"latexdocs" and "pdfdocs". To do so, a conf.py in the sub-folder is
required, where the latex_documents of the sub-folder are
defined. E.g. to build only gpu's PDF add the following to the
Documentation/gpu/conf.py::
+latex_documents = [
+ ("index", "gpu.tex", "Linux GPU Driver Developer's Guide",
+ "The kernel development community", "manual"),
+]
and run:
make SPHINXDIRS=gpu pdfdocs
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Wed, 24 Aug 2016 13:35:24 +0000 (15:35 +0200)]
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>
Mauro Carvalho Chehab [Tue, 30 Aug 2016 23:20:58 +0000 (20:20 -0300)]
docs-rst: kernel-doc: fix typedef output in RST format
When using a typedef function like this one:
typedef bool v4l2_check_dv_timings_fnc (const struct v4l2_dv_timings * t, void * handle);
The Sphinx C domain expects it to create a c:type: reference,
as that's the way it creates the type references when parsing
a c:function:: declaration.
So, a declaration like:
.. c:function:: bool v4l2_valid_dv_timings (const struct v4l2_dv_timings * t, const struct v4l2_dv_timings_cap * cap, v4l2_check_dv_timings_fnc fnc, void * fnc_handle)
Will create a cross reference for :c:type:`v4l2_check_dv_timings_fnc`.
So, when outputting such typedefs in RST format, we need to handle
this special case, as otherwise it will produce those warnings:
./include/media/v4l2-dv-timings.h:43: WARNING: c:type reference target not found: v4l2_check_dv_timings_fnc
./include/media/v4l2-dv-timings.h:60: WARNING: c:type reference target not found: v4l2_check_dv_timings_fnc
./include/media/v4l2-dv-timings.h:81: WARNING: c:type reference target not found: v4l2_check_dv_timings_fnc
So, change the kernel-doc script to produce a RST output for the
above typedef as:
.. c:type:: v4l2_check_dv_timings_fnc
**Typedef**: timings check callback
**Syntax**
``bool v4l2_check_dv_timings_fnc (const struct v4l2_dv_timings * t, void * handle);``
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 30 Aug 2016 23:20:57 +0000 (20:20 -0300)]
docs-rst: improve typedef parser
Improve the parser to handle typedefs like:
typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle);
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Baoquan He [Wed, 24 Aug 2016 05:06:45 +0000 (13:06 +0800)]
docs: kernel-parameter: Improve the description of nr_cpus and maxcpus
From the old description people still can't get what's the exact
difference between nr_cpus and maxcpus. Especially in kdump kernel
nr_cpus is always suggested if it's implemented in the ARCH. The
reason is nr_cpus is used to limit the max number of possible cpu
in system, the sum of already plugged cpus and hot plug cpus can't
exceed its value. However maxcpus is used to limit how many cpus
are allowed to be brought up during bootup.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 23 Aug 2016 01:02:57 +0000 (22:02 -0300)]
docs-rst: kernel-doc: better output struct members
Right now, for a struct, kernel-doc produces the following output:
.. c:type:: struct v4l2_prio_state
stores the priority states
**Definition**
::
struct v4l2_prio_state {
atomic_t prios[4];
};
**Members**
``atomic_t prios[4]``
array with elements to store the array priorities
Putting a member name in verbatim and adding a continuation line
causes the LaTeX output to generate something like:
item[atomic_t prios\[4\]] array with elements to store the array priorities
Everything inside "item" is non-breakable, with may produce
lines bigger than the column width.
Also, for function members, like:
int (* rx_read) (struct v4l2_subdev *sd, u8 *buf, size_t count,ssize_t *num);
It puts the name of the member at the end, like:
int (*) (struct v4l2_subdev *sd, u8 *buf, size_t count,ssize_t *num) read
With is very confusing.
The best is to highlight what really matters: the member name.
is a secondary information.
So, change kernel-doc, for it to produce the output on a different way:
**Members**
``prios[4]``
array with elements to store the array priorities
Also, as the type is not part of LaTeX "item[]", LaTeX will split it into
multiple lines, if needed.
So, both LaTeX/PDF and HTML outputs will look good.
It should be noticed, however, that the way Sphinx LaTeX output handles
things like:
Foo
bar
is different than the HTML output. On HTML, it will produce something
like:
**Foo**
bar
While, on LaTeX, it puts both foo and bar at the same line, like:
**Foo** bar
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Mon, 22 Aug 2016 21:40:38 +0000 (15:40 -0600)]
Merge branch 'doc/4.9' into docs-next
Mauro Carvalho Chehab [Mon, 22 Aug 2016 14:04:49 +0000 (11:04 -0300)]
docs-rst: add package adjustbox
We need adjustbox to allow adjusting the size of tables that
are bigger than the line width. There are quite a few of them
at the media books.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Sun, 21 Aug 2016 18:23:04 +0000 (15:23 -0300)]
docs-rst: Fix an warning when in interactive mode
When XeLaTeX is in interactive mode, it complains that
py@noticelength already exists. Rename it and declare it
only once to avoid such messages.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Sun, 21 Aug 2016 18:23:03 +0000 (15:23 -0300)]
docs-rst: Use better colors for note/warning/attention boxes
Instead of painting the box with gray, let's use a colored
box. IMHO, that makes easier to warn users about some issue
pointed by the Sphinx. It also matches to what we do already
with the HTML output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 19 Aug 2016 12:49:38 +0000 (09:49 -0300)]
docs-rst: conf.py: adjust the size of .. note:: tag
While the current implementation works well when using as a
paragraph, it doesn't work properly if inside a table. As we
have quite a few such cases, fix the logic to take the column
size into account.
PS.: I took the logic there from the latest version of Sphinx.sty
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Thu, 18 Aug 2016 14:53:39 +0000 (11:53 -0300)]
docs-rst: add support for LaTeX output
Sphinx supports LaTeX output. Sometimes, it is interesting to
call it directly, instead of also generating a PDF. As it comes
for free, add a target for it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Mon, 15 Aug 2016 14:08:28 +0000 (16:08 +0200)]
doc-rst: migrate ioctl CEC_DQEVENT to c-domain
This is only one example, demonstrating the benefits of the patch
series. The CEC_DQEVENT ioctl is migrated to the sphinx c-domain and
referred by ":name: CEC_DQEVENT".
With this change the indirection using ":ref:`CEC_DQEVENT` is no longer
needed, we can refer the ioctl directly with ":c:func:`CEC_DQEVENT`". As
addition in the index, there is a entry "CEC_DQEVENT (C function)".
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Mon, 15 Aug 2016 14:08:27 +0000 (16:08 +0200)]
doc-rst: Revert "kernel-doc: fix handling of address_space tags"
This reverts commit
a88b1672d4ddf9895eb53e6980926d5e960dea8e.
From the origin comit log::
The RST cpp:function handler is very pedantic: it doesn't allow any
macros like __user on it
Since the kernel-doc parser does NOT make use of the cpp:domain, there
is no need to change the kernel-doc parser eleminating the address_space
tags.
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Mon, 15 Aug 2016 14:08:26 +0000 (16:08 +0200)]
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>
Markus Heiser [Mon, 15 Aug 2016 14:08:25 +0000 (16:08 +0200)]
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>
Markus Heiser [Mon, 22 Aug 2016 21:16:21 +0000 (15:16 -0600)]
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>
Jonathan Corbet [Sat, 20 Aug 2016 19:17:32 +0000 (13:17 -0600)]
docs: split up the driver book
We don't need to keep it as a single large file anymore; split it up so
that it is easier to manage and the individual sections can be read
directly as plain files.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sat, 20 Aug 2016 19:02:50 +0000 (13:02 -0600)]
Docs: sphinxify device-drivers.tmpl
Perform a basic sphinx conversion of the device-drivers docbook and move it
to its own directory.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Fri, 19 Aug 2016 17:51:08 +0000 (11:51 -0600)]
Merge branch 'doc/4.9' into docs-next
Jonathan Corbet [Fri, 19 Aug 2016 17:38:36 +0000 (11:38 -0600)]
Merge branch 'dev-tools' into doc/4.9
Coalesce development-tool documents into a single directory and sphinxify
them.
Jonathan Corbet [Mon, 8 Aug 2016 21:55:49 +0000 (15:55 -0600)]
docs: Sphinxify gdb-kernel-debugging.txt and move to dev-tools
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 22:12:28 +0000 (16:12 -0600)]
docs: sphinxify kmemcheck.txt and move to dev-tools
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:46:10 +0000 (15:46 -0600)]
docs: sphinxify kmemleak.txt and move it to dev-tools
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:35:42 +0000 (15:35 -0600)]
docs: sphinxify ubsan.txt and move it to dev-tools
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:31:03 +0000 (15:31 -0600)]
docs: sphinxify kasan.txt and move to dev-tools
No textual changes beyond formatting.
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:26:20 +0000 (15:26 -0600)]
docs: sphinixfy gcov.txt and move to dev-tools
No textual changes beyond formatting.
Cc: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:13:00 +0000 (15:13 -0600)]
docs: sphinxify kcov.txt and move to dev-tools
Another document added to the dev-tools collection.
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 7 Aug 2016 21:09:14 +0000 (15:09 -0600)]
docs: sphinxify sparse.txt and move to dev-tools
Fold the sparse document into the development tools set; no changes to the
text itself beyond formatting.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Mon, 8 Aug 2016 22:03:14 +0000 (16:03 -0600)]
docs: sphinxify coccinelle.txt and add it to dev-tools
No textual changes have been made, but the formatting has obviously been
tweaked.
Cc: Michal Marek <mmarek@suse.com>
Cc: Gilles Muller <Gilles.Muller@lip6.fr>
Acked-by: Nicolas Palix <nicolas.palix@imag.fr>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Mon, 8 Aug 2016 22:00:25 +0000 (16:00 -0600)]
docs: create a new dev-tools directory
This directory will be a collecting point for documentation oriented around
development tools. As a step toward ordering Documentation/ it's a small
one, but we have to start somewhere...
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Thu, 18 Aug 2016 23:22:10 +0000 (17:22 -0600)]
Merge branch 'doc/4.9' into docs-next
Jonathan Corbet [Thu, 18 Aug 2016 23:16:14 +0000 (17:16 -0600)]
Merge branch 'xelatex' into doc/4.9
Mauro says:
This patch series fix Sphinx to allow it to build the media
documentation as a PDF file.
The first patch is actually a bug fix: one of the previous patch
broke compilation for PDF as a hole, as it added an extra
parenthesis to a function call.
The second patch just removes a left over code for rst2pdf.
The other patches change from "pdflatex" to "xelatex" and address
several issues that prevent building the media books.
I think this patch series belong to docs-next. Feel free to merge
them there, if you agree. There's one extra patch that touches
Documentation/conf.py, re-adding the media book to the PDF build,
but IMHO this one would be better to be merged via the media tree,
after the fixes inside the media documentation to fix the build.
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:43 +0000 (13:25 -0300)]
docs-rst: enable the Sphinx math extension
This extension will be used by the media books.
The name of the math image extension changed on Sphinx 1.4.x,
according with:
http://www.sphinx-doc.org/en/stable/ext/math.html#module-sphinx.ext.imgmath
Let's autodetect, to keep building with versions < 1.4.
Suggested-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:42 +0000 (13:25 -0300)]
docs-rst: Don't go to interactive mode on errors
When building for LaTeX, it stops and enters into interactive
mode on errors. Don't do that, as there are some non-fatal errors
on media books when using Sphinx 1.4.x that we don't know how fix
yet.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:41 +0000 (13:25 -0300)]
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>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:40 +0000 (13:25 -0300)]
docs-rst: better adjust margins and font size
As we have big tables, reduce the left/right margins and decrease
the point size to 8pt. Visually, it is still good enough, and
now less tables are too big to be displayed.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:39 +0000 (13:25 -0300)]
docs-rst: Don't mangle with UTF-8 chars on LaTeX/PDF output
pdflatex doesn't accept using some UTF-8 chars, like
"equal or less than" or "equal or greater than" chars. However,
the media documents use them. So, we need to use XeLaTeX for
conversion, and a font that accepts such characters.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:38 +0000 (13:25 -0300)]
docs-rst: improve output for .. notes:: on LaTeX
The output for those notes are bad in pdf, as they're not
in a box with a different color. Also, it causes the output
to not build if the note is inside a table.
Change its implementation to avoid the above troubles.
The logic there came from:
https://stackoverflow.com/questions/606746/how-to-customize-an-existing-latex-environment-without-interfering-with-other-en
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:37 +0000 (13:25 -0300)]
docs-rst: allow generating some LaTeX pages in landscape
Portrait is too small for some tables used at the media docs.
So, allow documents to tell Sphinx to generate some pages
in landscape by using:
.. raw:: latex
\begin{landscape}
<some stuff>
.. raw:: latex
\end{landscape}
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:36 +0000 (13:25 -0300)]
docs-rst: remove a rst2pdf left over code
The usage of rst2pdf was replaced by pdflatex on a previous
patch. Remove the left-over code at conf.py.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Tue, 16 Aug 2016 16:25:35 +0000 (13:25 -0300)]
docs-rst: fix a breakage when building PDF documents
changeset
606b9ac81a63 ("doc-rst: generic way to build only sphinx
sub-folders") accidentally broke PDF generation by adding an extra
")". Remove it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Laura Abbott [Tue, 16 Aug 2016 16:30:31 +0000 (09:30 -0700)]
mm, kasan: Update kasan docs to indicate arm64 support
KASAN has been supported on arm64 since
39d114ddc682 ("arm64: add KASAN
support"). Update the docs to indicate this.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Mon, 15 Aug 2016 15:15:59 +0000 (17:15 +0200)]
doc-rst: add index to sub-folders
Add a index if only a sub-folder is build e.g.::
make SPHINXDIRS=media cleandocs htmldocs
BTW: removed dead search link in the top-index file
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Eugeniu Rosca [Tue, 2 Aug 2016 22:40:34 +0000 (00:40 +0200)]
kconfig-language: improve menuconfig usage description
Improper menuconfig usage leads to empty menu entries.
zconfdump() is able to reveal some real-life examples:
- menuconfig VFIO_NOIOMMU
- menuconfig RESET_CONTROLLER
- menuconfig SND_ARM
To avoid future occurrences of those, improve the menuconfig syntax
description.
Signed-off-by: Eugeniu Rosca <rosca.eugeniu@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
baolex.ni [Mon, 11 Jul 2016 01:57:37 +0000 (09:57 +0800)]
Update the maximum depth of C-state from 6 to 9
Hi Jon,
This patch is an old one, we have corrected some minor issues on the newer one.
Please only review the newest version from my last mail with this subject
"[PATCH] ACPI: Update the maximum depth of C-state from 6 to 9".
And I also attached it to this mail.
Thanks,
Baole
On 7/11/2016 6:37 AM, Jonathan Corbet wrote:
> On Mon, 4 Jul 2016 09:55:10 +0800
> "baolex.ni" <baolex.ni@intel.com> wrote:
>
>> Currently, CPUIDLE_STATE_MAX has been defined as 10 in the cpuidle head file,
>> and max_cstate = CPUIDLE_STATE_MAX – 1, so 9 is the right maximum depth of C-state.
>> This change is reflected in one place of the kernel-param file,
>> but not in the other place where I suggest changing.
>>
>> Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
>> Signed-off-by: Baole Ni <baolex.ni@intel.com>
>
> So why are there two signoffs on a single-line patch? Which one of you
> is the actual author?
>
> Thanks,
>
> jon
>
From
cf5f8aa6885874f6490b11507d3c0c86fa0a11f4 Mon Sep 17 00:00:00 2001
From: Chuansheng Liu <chuansheng.liu@intel.com>
Date: Mon, 4 Jul 2016 08:52:51 +0800
Subject: [PATCH] Update the maximum depth of C-state from 6 to 9
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Currently, CPUIDLE_STATE_MAX has been defined as 10 in the cpuidle head file,
and max_cstate = CPUIDLE_STATE_MAX – 1, so 9 is the right maximum depth of C-state.
This change is reflected in one place of the kernel-param file,
but not in the other place where I suggest changing.
Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Baole Ni <baolex.ni@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Icenowy Zheng [Sat, 13 Aug 2016 10:01:13 +0000 (18:01 +0800)]
Documentation: sunxi: Update Allwinner SoC documentation
Now, the A83T and A64 SoC user manuals are available.
Update the documentation to add the links.
An updated version of A83T datasheet is also included now.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Ricardo Ribalda Delgado [Thu, 18 Aug 2016 08:54:19 +0000 (10:54 +0200)]
Documentation: rs485: Do not define manually the ioctl
It is not a very good practice to define the IOCTL manually instead of
using the header file.
Fix it on the documentation example.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
David A. Long [Fri, 12 Aug 2016 20:24:44 +0000 (16:24 -0400)]
Documentation: kprobes: Document jprobes stack copying limitations
Some architectures (i.e.: sparc64 and arm64) make reasonable partial stack
duplication for jprobes problematic. Document this.
Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Sun, 14 Aug 2016 19:57:55 +0000 (13:57 -0600)]
Merge branch 'doc/4.9' into docs-next
Jonathan Corbet [Sun, 14 Aug 2016 19:57:38 +0000 (13:57 -0600)]
Merge branch 'doc/4.8-fixes' into docs-next
Joe Perches [Wed, 13 Jul 2016 00:18:28 +0000 (17:18 -0700)]
CodingStyle: Remove "Don't use C99-style comments"
Because Linus may still be reading source code on greenbar paper
instead of color terminals with code syntax highlighting and
appropriate font decorations.
Link: http://lkml.kernel.org/r/CA+55aFyQYJerovMsSoSKS7PessZBr4vNp-3QUUwhqk4A4_jcbg@mail.gmail.com
Signed-off-by: Joe Perches <joe@perches.com>
Jean Delvare [Mon, 25 Jul 2016 12:29:06 +0000 (14:29 +0200)]
CodingStyle: Clarify and complete chapter 7
Chapter 7 (Centralized exiting of functions) of the coding style
documentation is unclear at times, and lacks some information (such
as the possibility to indent labels with a single space.) Clarify and
complete it.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Markus Elfring <elfring@users.sourceforge.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Øyvind A. Holm [Tue, 26 Jul 2016 13:21:33 +0000 (15:21 +0200)]
README: Delete obsolete i386 info + update arch/i386/ paths
Support for i386 was removed in v3.8, delete the paragraph that says
processor types above 386 won't work on that architecture. It's obsolete
information and potentially confusing. Also change a couple of
"arch/i386/" paths to one that exists now, using "arch/x86/" instead.
Signed-off-by: Øyvind A. Holm <sunny@sunbase.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Fri, 5 Aug 2016 09:19:43 +0000 (11:19 +0200)]
doc-rst: customize RTD theme, drop padding of inline literal
Remove the distracting (left/right) padding of inline literals. (HTML
<code>). Requested and discussed in [1].
[1] http://www.spinics.net/lists/linux-media/msg103991.html
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Andi Shyti [Fri, 12 Aug 2016 12:41:25 +0000 (14:41 +0200)]
Documentation: clk: update file names containing referenced structures
Commit '
b09d6d991' removes include/linux/clk-private.h and
re-arranges the clock related structures contained in it in
different files. The documentation has not been updated
accordingly, thus it wasn't anymore consistent.
Place the structures referenced by Documentation/clk.txt in the
correct files and update their contents to the latest status.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
[geert: Fix path to clk.c, whitespace, more clk_core, ...]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Sat, 13 Aug 2016 14:12:46 +0000 (16:12 +0200)]
doc-rst: add docutils config file
To stop the sphinx-build on severe errors and exit with an exit code (to
stop make) the halt_level must be set. The halt_level can't be set from
sphinx, it is a docutils configuration [1]. For this a docutils.conf was
added.
[1] http://docutils.sourceforge.net/docs/user/config.html
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Sat, 13 Aug 2016 14:12:45 +0000 (16:12 +0200)]
doc-rst: add stand-alone conf.py to gpu folder
With the gpu/conf.py, the gpu folder can be build and distributed
stand-alone. To compile only the html of 'gpu' folder use::
make SPHINXDIRS="gpu" htmldocs
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Sat, 13 Aug 2016 14:12:44 +0000 (16:12 +0200)]
doc-rst: add media/conf_nitpick.py
The media/conf_nitpick.py is a *build-theme* wich uses the nit-picking
mode of sphinx. 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.
The origin media/conf_nitpick.py comes from Mauro's experimental
docs-next branch::
https://git.linuxtv.org/mchehab/experimental.git mchehab/docs-next
BTW fixed python indentation in media/conf_nitpick.py. Python
indentation is 4 spaces [1] and Python 3 disallows mixing the use of
tabs and spaces for indentation [2].
[1] https://www.python.org/dev/peps/pep-0008/#indentation
[2] https://www.python.org/dev/peps/pep-0008/#tabs-or-spaces
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Sat, 13 Aug 2016 14:12:43 +0000 (16:12 +0200)]
doc-rst: add stand-alone conf.py to media folder
With the media/conf.py, and media/index.rst the media folder can be
build and distributed stand-alone.
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Markus Heiser [Sat, 13 Aug 2016 14:12:42 +0000 (16:12 +0200)]
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>
Jonathan Corbet [Fri, 12 Aug 2016 23:13:33 +0000 (17:13 -0600)]
Merge branch 'doc/4.8-fixes' into docs-next
Jani Nikula [Wed, 10 Aug 2016 15:54:09 +0000 (18:54 +0300)]
Documentation: exclude media documentation from pdf generation
Although pdflatex is more robust than rst2pdf, building media
documentation pdf still fails. Exclude media documentation from pdf
generation for now.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jani Nikula [Wed, 10 Aug 2016 15:54:08 +0000 (18:54 +0300)]
Documentation: switch to pdflatex for pdf generation
Looks like rst2pdf is not robust enough, especially for large documents.
Use recursive make on the Sphinx generated makefile to convert latex to
pdf. The ugly detail is that pdf is generated into
Documentation/output/latex.
Unfortunately, the pdflatex build generates huge amounts of build log
noise, and also fails in the end. We'll fix that next.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jani Nikula [Wed, 10 Aug 2016 15:54:07 +0000 (18:54 +0300)]
Documentation/sphinx: build the media intermediate rst files for all outputs
This is a stopgap measure to allow building outputs other than html.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Fri, 12 Aug 2016 21:12:36 +0000 (15:12 -0600)]
docs: kernel-documentation: remove some highlight directives
With the conf.py change, we don't need them to avoid warnings anymore.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Fri, 12 Aug 2016 20:11:12 +0000 (14:11 -0600)]
docs: Set the Sphinx default highlight language to "guess"
This should eliminate a whole class of markup warnings, at the cost of
occasionally amusing markup choices; we'll have to see if it works out.
Suggested-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Linus Torvalds [Mon, 8 Aug 2016 01:18:00 +0000 (18:18 -0700)]
Linux 4.8-rc1
Linus Torvalds [Sun, 7 Aug 2016 23:38:45 +0000 (16:38 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull more block fixes from Jens Axboe:
"As mentioned in the pull the other day, a few more fixes for this
round, all related to the bio op changes in this series.
Two fixes, and then a cleanup, renaming bio->bi_rw to bio->bi_opf. I
wanted to do that change right after or right before -rc1, so that
risk of conflict was reduced. I just rebased the series on top of
current master, and no new ->bi_rw usage has snuck in"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: rename bio bi_rw to bi_opf
target: iblock_execute_sync_cache() should use bio_set_op_attrs()
mm: make __swap_writepage() use bio_set_op_attrs()
block/mm: make bdev_ops->rw_page() take a bool for read/write
Linus Torvalds [Sun, 7 Aug 2016 23:35:08 +0000 (16:35 -0700)]
Merge tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux
Pull drm zpos property support from Dave Airlie:
"This tree was waiting on some media stuff I hadn't had time to get a
stable branchpoint off, so I just waited until it was all in your tree
first.
It's been around a bit on the list and shouldn't affect anything
outside adding the generic API and moving some ARM drivers to using
it"
* tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux:
drm: rcar: use generic code for managing zpos plane property
drm/exynos: use generic code for managing zpos plane property
drm: sti: use generic zpos for plane
drm: add generic zpos property
Jens Axboe [Fri, 5 Aug 2016 21:35:16 +0000 (15:35 -0600)]
block: rename bio bi_rw to bi_opf
Since commit
63a4cc24867d, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.
No intended functional changes in this commit.
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Mon, 1 Aug 2016 15:39:23 +0000 (09:39 -0600)]
target: iblock_execute_sync_cache() should use bio_set_op_attrs()
The original commit missed this function, it needs to mark it a
write flush.
Cc: Mike Christie <mchristi@redhat.com>
Fixes: e742fc32fcb4 ("target: use bio op accessors")
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Mon, 1 Aug 2016 15:38:44 +0000 (09:38 -0600)]
mm: make __swap_writepage() use bio_set_op_attrs()
Cleaner than manipulating bio->bi_rw flags directly.
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Fri, 5 Aug 2016 14:11:04 +0000 (08:11 -0600)]
block/mm: make bdev_ops->rw_page() take a bool for read/write
Commit
abf545484d31 changed it from an 'rw' flags type to the
newer ops based interface, but now we're effectively leaking
some bdev internals to the rest of the kernel. Since we only
care about whether it's a read or a write at that level, just
pass in a bool 'is_write' parameter instead.
Then we can also move op_is_write() and friends back under
CONFIG_BLOCK protection.
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Sun, 7 Aug 2016 14:23:17 +0000 (10:23 -0400)]
Merge tag 'doc-4.8-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"Three fixes for the docs build, including removing an annoying warning
on 'make help' if sphinx isn't present"
* tag 'doc-4.8-fixes' of git://git.lwn.net/linux:
DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1
Documenation: update cgroup's document path
Documentation/sphinx: do not warn about missing tools in 'make help'
Linus Torvalds [Sun, 7 Aug 2016 14:13:14 +0000 (10:13 -0400)]
Merge tag 'binfmt-for-linus' of git://git./linux/kernel/git/jejb/binfmt_misc
Pull binfmt_misc update from James Bottomley:
"This update is to allow architecture emulation containers to function
such that the emulation binary can be housed outside the container
itself. The container and fs parts both have acks from relevant
experts.
To use the new feature you have to add an F option to your binfmt_misc
configuration"
From the docs:
"The usual behaviour of binfmt_misc is to spawn the binary lazily when
the misc format file is invoked. However, this doesn't work very well
in the face of mount namespaces and changeroots, so the F mode opens
the binary as soon as the emulation is installed and uses the opened
image to spawn the emulator, meaning it is always available once
installed, regardless of how the environment changes"
* tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc:
binfmt_misc: add F option description to documentation
binfmt_misc: add persistent opened binary handler for containers
fs: add filp_clone_open API
Eryu Guan [Tue, 2 Aug 2016 11:58:28 +0000 (19:58 +0800)]
fs: return EPERM on immutable inode
In most cases, EPERM is returned on immutable inode, and there're only a
few places returning EACCES. I noticed this when running LTP on
overlayfs, setxattr03 failed due to unexpected EACCES on immutable
inode.
So converting all EACCES to EPERM on immutable inode.
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 7 Aug 2016 14:01:14 +0000 (10:01 -0400)]
Merge branch 'for-linus-2' of git://git./linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
"Assorted cleanups and fixes.
In the "trivial API change" department - ->d_compare() losing 'parent'
argument"
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
cachefiles: Fix race between inactivating and culling a cache object
9p: use clone_fid()
9p: fix braino introduced in "9p: new helper - v9fs_parent_fid()"
vfs: make dentry_needs_remove_privs() internal
vfs: remove file_needs_remove_privs()
vfs: fix deadlock in file_remove_privs() on overlayfs
get rid of 'parent' argument of ->d_compare()
cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()
affs ->d_compare(): don't bother with ->d_inode
fold _d_rehash() and __d_rehash() together
fold dentry_rcuwalk_invalidate() into its only remaining caller
Linus Torvalds [Sat, 6 Aug 2016 13:50:36 +0000 (09:50 -0400)]
Merge tag 'xfs-rmap-for-linus-4.8-rc1' of git://git./linux/kernel/git/dgc/linux-xfs
Pull more xfs updates from Dave Chinner:
"This is the second part of the XFS updates for this merge cycle, and
contains the new reverse block mapping feature for XFS.
Reverse mapping allows us to track the owner of a specific block on
disk precisely. It is implemented as a set of btrees (one per
allocation group) that track the owners of allocated extents.
Effectively it is a "used space tree" that is updated when we allocate
or free extents. i.e. it is coherent with the free space btrees we
already maintain and never overlaps with them.
This reverse mapping infrastructure is the building block of several
upcoming features - reflink, copy-on-write data, dedupe, online
metadata and data scrubbing, highly accurate bad sector/data loss
reporting to users, and significantly improved reconstruction of
damaged and corrupted filesystems. There's a lot of new stuff coming
along in the next couple of cycles,a nd it all builds in the rmap
infrastructure.
As such, it's a huge chunk of new code with new on-disk format
features and internal infrastructure. It warns at mount time as an
experimental feature and that it may eat data (as we do with all new
on-disk features until they stabilise). We have not released
userspace suport for it yet - userspace support currently requires
download from Darrick's xfsprogs repo and build from source, so the
access to this feature is really developer/tester only at this point.
Initial userspace support will be released at the same time kernel
with this code in it is released.
The new rmap enabled code regresses 3 xfstests - all are ENOSPC
related corner cases, one of which Darrick posted a fix for a few
hours ago. The other two are fixed by infrastructure that is part of
the upcoming reflink patchset. This new ENOSPC infrastructure
requires a on-disk format tweak required to keep mount times in
check - we need to keep an on-disk count of allocated rmapbt blocks so
we don't have to scan the entire btrees at mount time to count them.
This is currently being tested and will be part of the fixes sent in
the next week or two so users will not be exposed to this change"
* tag 'xfs-rmap-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (52 commits)
xfs: move (and rename) the deferred bmap-free tracepoints
xfs: collapse single use static functions
xfs: remove unnecessary parentheses from log redo item recovery functions
xfs: remove the extents array from the rmap update done log item
xfs: in btree_lshift, only allocate temporary cursor when needed
xfs: remove unnecesary lshift/rshift key initialization
xfs: remove the get*keys and update_keys btree ops pointers
xfs: enable the rmap btree functionality
xfs: don't update rmapbt when fixing agfl
xfs: disable XFS_IOC_SWAPEXT when rmap btree is enabled
xfs: add rmap btree block detection to log recovery
xfs: add rmap btree geometry feature flag
xfs: propagate bmap updates to rmapbt
xfs: enable the xfs_defer mechanism to process rmaps to update
xfs: log rmap intent items
xfs: create rmap update intent log items
xfs: add rmap btree insert and delete helpers
xfs: convert unwritten status of reverse mappings
xfs: remove an extent from the rmap btree
xfs: add an extent to the rmap btree
...
Linus Torvalds [Sat, 6 Aug 2016 13:49:02 +0000 (09:49 -0400)]
Merge branch 'work.const-qstr' of git://git./linux/kernel/git/viro/vfs
Pull qstr constification updates from Al Viro:
"Fairly self-contained bunch - surprising lot of places passes struct
qstr * as an argument when const struct qstr * would suffice; it
complicates analysis for no good reason.
I'd prefer to feed that separately from the assorted fixes (those are
in #for-linus and with somewhat trickier topology)"
* 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
qstr: constify instances in adfs
qstr: constify instances in lustre
qstr: constify instances in f2fs
qstr: constify instances in ext2
qstr: constify instances in vfat
qstr: constify instances in procfs
qstr: constify instances in fuse
qstr constify instances in fs/dcache.c
qstr: constify instances in nfs
qstr: constify instances in ocfs2
qstr: constify instances in autofs4
qstr: constify instances in hfs
qstr: constify instances in hfsplus
qstr: constify instances in logfs
qstr: constify dentry_init_security
Linus Torvalds [Sat, 6 Aug 2016 13:44:14 +0000 (09:44 -0400)]
Merge tag 'media/v4.8-6' of git://git./linux/kernel/git/mchehab/linux-media
Pull mailcap fixlets from Mauro Carvalho Chehab:
"A small fixup for my and Shuah's entries in .mailcap.
Basically, those entries were with a syntax that makes
get_maintainer.pl to do the wrong thing"
* tag 'media/v4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
.mailmap: Correct entries for Mauro Carvalho Chehab and Shuah Khan
Linus Torvalds [Sat, 6 Aug 2016 13:20:13 +0000 (09:20 -0400)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio/vhost updates from Michael Tsirkin:
- new vsock device support in host and guest
- platform IOMMU support in host and guest, including compatibility
quirks for legacy systems.
- misc fixes and cleanups.
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
VSOCK: Use kvfree()
vhost: split out vringh Kconfig
vhost: detect 32 bit integer wrap around
vhost: new device IOTLB API
vhost: drop vringh dependency
vhost: convert pre sorted vhost memory array to interval tree
vhost: introduce vhost memory accessors
VSOCK: Add Makefile and Kconfig
VSOCK: Introduce vhost_vsock.ko
VSOCK: Introduce virtio_transport.ko
VSOCK: Introduce virtio_vsock_common.ko
VSOCK: defer sock removal to transports
VSOCK: transport-specific vsock_transport functions
vhost: drop vringh dependency
vop: pull in vhost Kconfig
virtio: new feature to detect IOMMU device quirk
balloon: check the number of available pages in leak balloon
vhost: lockless enqueuing
vhost: simplify work flushing