Alex Shi [Fri, 9 Aug 2019 12:04:47 +0000 (20:04 +0800)]
docs/zh_CN: update Chinese howto.rst for latexdocs making
Mauro Carvalho Chehab <mchehab+samsung@kernel.org> found a reference
error in Chinese howto.rst. and further more there more infos of
latexdocs/epubdocs format doc making in English howto.rst.
So I update this part according to latest howto.rst and settled
the correct reference.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sheriff Esseson [Fri, 9 Aug 2019 13:23:49 +0000 (14:23 +0100)]
Documentation: virt: Fix broken reference to virt tree's index
Fix broken reference to virt/index.rst.
Fixes:
2f5947dfcaec ("Documentation: move Documentation/virtual to Documentation/virt")
Signed-off-by: Sheriff Esseson <sheriffesseson@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Marco Villegas [Fri, 9 Aug 2019 23:29:07 +0000 (18:29 -0500)]
docs: Fix typo on pull requests guide
Signed-off-by: Marco Villegas <git@marvil07.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Andy Shevchenko [Mon, 12 Aug 2019 16:06:31 +0000 (19:06 +0300)]
kernel-doc: Allow anonymous enum
In C is a valid construction to have an anonymous enumerator.
Though we have now:
drivers/pinctrl/intel/pinctrl-intel.c:240: error: Cannot parse enum!
Support it in the kernel-doc script.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Neuschäfer [Mon, 12 Aug 2019 16:07:05 +0000 (18:07 +0200)]
Documentation: sphinx: Don't parse socket() as identifier reference
With the introduction of Documentation/sphinx/automarkup.py, socket() is
parsed as a reference to the in-kernel definition of socket. Sphinx then
decides that struct socket is a good match, which is usually not
intended, when the syscall is meant instead. This was observed in
Documentation/networking/af_xdp.rst.
Prevent socket() from being misinterpreted by adding it to the Skipfuncs
list in automarkup.py.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Neuschäfer [Mon, 12 Aug 2019 16:07:04 +0000 (18:07 +0200)]
Documentation: sphinx: Add missing comma to list of strings
In Python, like in C, when a comma is omitted in a list of strings, the
two strings around the missing comma are concatenated.
Cc: stable@vger.kernel.org # v5.2 only
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Chao Yu [Fri, 2 Aug 2019 01:21:35 +0000 (09:21 +0800)]
mailmap: add entry for Jaegeuk Kim
Add entry to connect all Jaegeuk's email addresses.
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Todor Tomov [Thu, 1 Aug 2019 17:26:03 +0000 (20:26 +0300)]
mailmap: Add an entry for my email address
My @linaro.org email address doesn't exist anymore so add a
mailmap entry to map it to my @gmail.com address.
Signed-off-by: Todor Tomov <todor.too@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Chao Yu [Thu, 1 Aug 2019 03:17:50 +0000 (11:17 +0800)]
mailmap: add entry for Gao Xiang
Add entry to connect all Gao Xiang's email addresses.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Colin Ian King [Mon, 5 Aug 2019 10:49:51 +0000 (11:49 +0100)]
Input: docs: fix spelling mistake "potocol" -> "protocol"
There is a minor spelling mistake in the documentation, fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Randy Dunlap [Mon, 5 Aug 2019 16:29:50 +0000 (09:29 -0700)]
kernel-doc: ignore __printf attribute
Ignore __printf() function attributes just as other __attribute__
strings are ignored.
Fixes this kernel-doc warning message:
include/kunit/kunit-stream.h:58: warning: Function parameter or member '2' not described in '__printf'
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Tested-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:27:56 +0000 (17:27 -0300)]
docs: fs: porting.rst: fix a broken reference to another doc
With all those document shifts, references to documents get
broken.
Fix one such occurrence at porting.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:08:53 +0000 (17:08 -0300)]
docs: w1: convert to ReST and add to the kAPI group of docs
The 1wire documentation was written with w1 developers in
mind, so, it makes sense to add it together with the driver-api
set.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:08:51 +0000 (17:08 -0300)]
docs: fs: cifs: convert to ReST and add to admin-guide book
The filenames for cifs documentation is not using the same
convention as almost all Kernel documents is using. So,
rename them to a more appropriate name. Then, manually convert
the documentation files for CIFS to ReST.
By doing a manual conversion, we can preserve the original
author's style, while making it to look more like the other
Kernel documents.
Most of the conversion here is trivial. The most complex one was
the README file (which was renamed to usage.rst).
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:08:50 +0000 (17:08 -0300)]
spi: docs: convert to ReST and add it to the kABI bookset
While there's one file there with briefily describes the uAPI,
the documentation was written just like most subsystems: focused
on kernel developers. So, add it together with driver-api books.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:08:49 +0000 (17:08 -0300)]
docs: writing-schema.md: convert from markdown to ReST
The documentation standard is ReST and not markdown.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Wed, 31 Jul 2019 20:08:48 +0000 (17:08 -0300)]
docs: fix a couple of new broken references
Those are due to recent changes. Most of the issues
can be automatically fixed with:
$ ./scripts/documentation-file-ref-check --fix
The only exception was the sound binding with required
manual work.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jarkko Sakkinen [Fri, 12 Jul 2019 15:44:32 +0000 (18:44 +0300)]
tpm: Document UEFI event log quirks
There are some weird quirks when it comes to UEFI event log. Provide a
brief introduction to TPM event log mechanism and describe the quirks
and how they can be sorted out.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:34 +0000 (09:51 -0300)]
docs: net: convert two README files to ReST format
There are two README files there with doesn't have a .txt
extension nor are at ReST format.
In order to help with the docs conversion to ReST, rename those
and manually convert them to ReST format.
As there are lot more to be done for networking to be part of
the documentation body, for now mark those two files with
:orphan:, in order to supress a build warning.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:33 +0000 (09:51 -0300)]
docs: nios2: add it to the main Documentation body
Rename and add the nios2 documentation to the documentation
body.
The nios2 document is already on an ReST compatible format.
All it needs is that the title of the document to be promoted
one level.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:32 +0000 (09:51 -0300)]
docs: hwmon: pxe1610: convert to ReST format and add to the index
This document was recently introduced. Convert it to ReST
just like the other hwmon documents, adding it to the hwmon index.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:31 +0000 (09:51 -0300)]
docs: mips: add to the documentation body as ReST
Manually convert the AU1xxx_IDE.README file to ReST and add
to a MIPS book as part of the main documentation body.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:30 +0000 (09:51 -0300)]
docs: wimax: convert to ReST and add to admin-guide
Manually convert wimax documentation to ReST and add theit
to the Kernel doc body, inside the admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:29 +0000 (09:51 -0300)]
docs: index.rst: don't use genindex for pdf output
The genindex logic is meant to be used only for html output, as
pdf build has its own way to generate indexes.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org> # dmaengine and soundwire
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:28 +0000 (09:51 -0300)]
docs: fs: convert porting to ReST
This file has its own proper style, except that, after a while,
the coding style gets violated and whitespaces are placed on
different ways.
As Sphinx and ReST are very sentitive to whitespace differences,
I had to opt if each entry after required/mandatory/... fields
should start with zero spaces or with a tab. I opted to start them
all from the zero position, in order to avoid needing to break lines
with more than 80 columns, with would make harder for review.
Most of the other changes at porting.rst were made to use an unified
notation with works nice as a text file while also produce a good html
output after being parsed.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:27 +0000 (09:51 -0300)]
docs: fs: convert docs without extension to ReST
There are 3 remaining files without an extension inside the fs docs
dir.
Manually convert them to ReST.
In the case of the nfs/exporting.rst file, as the nfs docs
aren't ported yet, I opted to convert and add a :orphan: there,
with should be removed when it gets added into a nfs-specific
part of the fs documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:25 +0000 (09:51 -0300)]
docs: isdn: convert to ReST and add to kAPI bookset
The ISDN documentation is a mix of admin guide, uAPI and kAPI.
Ideally, it should be split. Yet, not sure if it would worth
the troble. Anyway, we have the same kind of mix on several
drivers specific documentation. So, just like the others, keep
the directory at the root Documentation/ tree, just adding a
pointer to it at the kAPI section, as the documentation was
written with the Kernel developers in mind.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:24 +0000 (09:51 -0300)]
docs: openrisc: convert to ReST and add to documentation body
Manually convert the two openRisc documents to ReST, adding them
to the Linux documentation body.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:23 +0000 (09:51 -0300)]
docs: parisc: convert to ReST and add to documentation body
Manually convert the two PA-RISC documents to ReST, adding them
to the Linux documentation body.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:22 +0000 (09:51 -0300)]
docs: README.buddha: convert to ReST and add to m68k book
Adjust the file for it to be properly parsed by Sphinx, adding
it to the index of the book it belongs.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:21 +0000 (09:51 -0300)]
docs: admin-guide: add auxdisplay files to it after conversion to ReST
Those two files describe userspace-faced information. While part of
it might fit on uAPI, it sounds to me that the admin guide is the
best place for them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:20 +0000 (09:51 -0300)]
docs: packing: move it to core-api book and adjust markups
The packing.txt file was misplaced, as docs should be part of
a documentation book, and not at the root dir.
So, move it to the core-api directory and add to its index.
Also, ensure that the file will be properly parsed and the bitmap
ascii artwork will use a monotonic font.
Fixes:
554aae35007e ("lib: Add support for generic packing operations")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:19 +0000 (09:51 -0300)]
docs: ipmb: place it at driver-api and convert to ReST
No new doc should be added at the main Documentation/ directory.
Instead, new docs should be added as ReST files, within the
Kernel documentation body.
Fixes:
51bd6f291583 ("Add support for IPMB driver")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:16 +0000 (09:51 -0300)]
docs: i2c: convert to ReST and add to driver-api bookset
Convert each file at I2C subsystem, renaming them to .rst and
adding to the driver-api book.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:14 +0000 (09:51 -0300)]
docs: ubifs-authentication.md: convert to ReST
The documentation standard is ReST and not markdown.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 12:51:12 +0000 (09:51 -0300)]
docs: thermal: add it to the driver API
The file contents mostly describes driver internals.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Phong Tran [Thu, 11 Jul 2019 16:52:01 +0000 (23:52 +0700)]
Documentation: coresight: convert txt to rst
This changes from plain text to reStructuredText as suggestion
in doc-guide [1]
[1] https://www.kernel.org/doc/html/latest/doc-guide/sphinx.html
Some adaptations such as: literal block, ``inline literal`` and
alignment text,...
Signed-off-by: Phong Tran <tranmanphong@gmail.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Shobhit Kukreti [Wed, 10 Jul 2019 15:31:23 +0000 (08:31 -0700)]
Documentation: filesystems: Convert ufs.txt to reStructuredText format
This converts the plain text documentation of ufs.txt to
reStructuredText format. Added to documentation build process
and verified with make htmldocs
Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Shobhit Kukreti [Wed, 10 Jul 2019 15:29:01 +0000 (08:29 -0700)]
Documentation: filesystems: Convert jfs.txt to
This converts the plain text documentation of jfs.txt to reStructuredText
format. Added to documentation build process and verified with
make htmldocs
Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Federico Vaga [Sat, 6 Jul 2019 21:01:00 +0000 (23:01 +0200)]
doc: email-clients miscellaneous fixes
Fixed some style inconsistencies and remove old statement referring to
kmail missing feature (saving email from the view window is possible).
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 21:01:55 +0000 (18:01 -0300)]
docs: riscv: convert boot-image-header.txt to ReST
Convert this small file to ReST format by:
- Using a proper markup for the document title;
- marking a code block as such;
- use tags for Author and date;
- use tables for bit map fields.
While here, fix a broken reference for a document with is
planned but is not here yet.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 19:29:14 +0000 (16:29 -0300)]
docs: zh_CN: howto.rst: fix a broken reference
There's a broken reference there pointing to the long gone
DocBook dir.
While I don't read chinese, Google translator translates it
to:
"The generated documentation will be placed in
the Documentation/DocBook/ directory."
Well, we know that the output will be Documentation/output
dir. So, let's fix this one.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 19:29:13 +0000 (16:29 -0300)]
docs: cgroup-v1/blkio-controller.rst: remove a CFQ left over
changeset
fb5772cbfe48 ("blkio-controller.txt: Remove references to CFQ")
removed cgroup references to CFQ, but it kept one left. Get rid of
it.
Fixes:
fb5772cbfe48 ("blkio-controller.txt: Remove references to CFQ")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 19:29:12 +0000 (16:29 -0300)]
MAINTAINERS: fix a renamed DT reference
Fix this rename:
Documentation/devicetree/bindings/i2c/{i2c-mv64xxx.txt -> marvell,mv64xxx-i2c.yaml}
Fixes:
f8bbde72ef44 ("dt-bindings: i2c: mv64xxx: Add YAML schemas")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 19:29:11 +0000 (16:29 -0300)]
MAINTAINERS: fix reference to net phy ABI file
The file sysfs-bus-mdio got removed in favor of sysfs-class-net-phydev,
with contained a duplicated set of information.
Fixes:
a6cd0d2d493a ("Documentation: net-sysfs: Remove duplicate PHY device documentation")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 19:29:10 +0000 (16:29 -0300)]
MAINTAINERS: fix broken ref for ABI sysfs-bus-counter-ftm-quaddec
There's a typo here:
sysfs-bus-counter-ftm-quadddec -> sysfs-bus-counter-ftm-quaddec
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Federico Vaga [Mon, 29 Jul 2019 21:58:56 +0000 (23:58 +0200)]
doc:it_IT: align translation to mainline
The patch translates the following patches in Italian:
1fb12b35e5ff kbuild: Raise the minimum required binutils version to 2.21
9c3c0c204814 isdn: remove isdn4linux
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Chao Yu [Wed, 31 Jul 2019 11:45:10 +0000 (19:45 +0800)]
mailmap: add entry to connect my email addresses
I've used several email accounts to contribute codes, samsung's one
is obsolete, so let me add entry to map them, in order to let people
find me easily when they blame my codes.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Geert Uytterhoeven [Wed, 31 Jul 2019 09:02:11 +0000 (11:02 +0200)]
docs: arm: Remove orphan sh-mobile directory
This directory is empty, except for a .gitignore file, listing an
executable file that can no longer be built since commit
c6535e1e0361157e ("Documentation: Remove ZBOOT MMC/SDHI utility and
docs").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Andy Shevchenko [Tue, 23 Jul 2019 16:57:50 +0000 (19:57 +0300)]
coda: Fix typo in the struct CodaCred documentation
Documentation mistakenly refers to a different type while explaining
the contents of the struct CodaCred.
Fix the typo in the struct CodaCred description in the documentation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sheriff Esseson [Tue, 23 Jul 2019 11:48:13 +0000 (12:48 +0100)]
Documentation: filesystem: fix "Removed Sysctls" table
the "Removed Sysctls" section is a table - bring it alive with ReST.
Signed-off-by: Sheriff Esseson <sheriffesseson@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mark Rutland [Tue, 23 Jul 2019 13:22:03 +0000 (14:22 +0100)]
Documentation/features/locking: update lists
The locking feature lists don't match reality as of v5.3-rc1:
* arm64 moved to queued spinlocks in commit:
c11090474d70590170cf5fa6afe85864ab494b37
("arm64: locking: Replace ticket lock implementation with qspinlock")
* xtensa moved to queued spinlocks and rwlocks in commit:
579afe866f52adcd921272a224ab36733051059c
("xtensa: use generic spinlock/rwlock implementation")
* architecture-specific rwsem support was removed in commit:
46ad0840b1584b92b5ff2cc3ed0b011dd6b8e0f1
("locking/rwsem: Remove arch specific rwsem files")
So update the feature lists accordingly, and remove the now redundant
rwsem-optimized list.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Mauro Carvalho Chehab [Fri, 26 Jul 2019 14:52:34 +0000 (11:52 -0300)]
MAINTAINERS: add entries for some documentation scripts
There are some documentation scripts I wrote with doesn't
have any maintainer at maintainer's file.
Add them to the DOCUMENTATION entry, in order to have
Jon and linux-doc ML c/c on those patches, plus a new
entry to ensure that I'll be c/c when people send patches
to those.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Guido Günther [Fri, 26 Jul 2019 09:55:34 +0000 (11:55 +0200)]
docs: phy: Drop duplicate 'be made'
Fix duplicate words.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Federico Vaga [Fri, 12 Jul 2019 09:48:22 +0000 (11:48 +0200)]
doc:it_IT: translations in process/
This patch add translations for:
- programming-languages
- kernel-docs (It is better to not translate this since English is
a requirement to get something useful out of it)
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jeremy Cline [Tue, 16 Jul 2019 14:49:08 +0000 (10:49 -0400)]
docs/vm: transhuge: fix typo in madvise reference
Fix an off-by-one typo in the transparent huge pages admin
documentation.
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Mon, 22 Jul 2019 19:51:20 +0000 (13:51 -0600)]
Merge branch 'pdf_fixes_v1' of https://git.linuxtv.org/mchehab/experimental into mauro
Bring in a set of post-thrashup fixes from Mauro.
Federico Vaga [Thu, 18 Jul 2019 07:47:54 +0000 (09:47 +0200)]
doc:it_IT: rephrase statement
The statement sounds more like a literal translation
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Federico Vaga [Thu, 18 Jul 2019 07:47:24 +0000 (09:47 +0200)]
doc:it_IT: align translation to mainline
The patch translates the following patches in Italian:
d9d7c0c497b8 docs: Note that :c:func: should no longer be used
83e8b971f81c sphinx.rst: Add note about code snippets embedded in the text
cca5e0b8a430 Documentation: PGP: update for newer HW devices
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Jonathan Corbet [Mon, 22 Jul 2019 19:42:10 +0000 (13:42 -0600)]
Merge tag 'v5.3-rc1' into docs-next
Pull in all of the massive docs changes from elsewhere.
Linus Torvalds [Sun, 21 Jul 2019 21:05:38 +0000 (14:05 -0700)]
Linus 5.3-rc1
Linus Torvalds [Sun, 21 Jul 2019 17:28:39 +0000 (10:28 -0700)]
Merge tag 'devicetree-fixes-for-5.3' of git://git./linux/kernel/git/robh/linux
Pull Devicetree fixes from Rob Herring:
"Fix several warnings/errors in validation of binding schemas"
* tag 'devicetree-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples
dt-bindings: iio: ad7124: Fix dtc warnings in example
dt-bindings: iio: avia-hx711: Fix avdd-supply typo in example
dt-bindings: pinctrl: aspeed: Fix AST2500 example errors
dt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors
dt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes
dt-bindings: Ensure child nodes are of type 'object'
Linus Torvalds [Sun, 21 Jul 2019 17:09:43 +0000 (10:09 -0700)]
Merge branch 'work.misc' of git://git./linux/kernel/git/viro/vfs
Pull vfs documentation typo fix from Al Viro.
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
typo fix: it's d_make_root, not d_make_inode...
Linus Torvalds [Sun, 21 Jul 2019 17:01:17 +0000 (10:01 -0700)]
Merge tag '5.3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Two fixes for stable, one that had dependency on earlier patch in this
merge window and can now go in, and a perf improvement in SMB3 open"
* tag '5.3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module number
cifs: flush before set-info if we have writeable handles
smb3: optimize open to not send query file internal info
cifs: copy_file_range needs to strip setuid bits and update timestamps
CIFS: fix deadlock in cached root handling
Qian Cai [Thu, 11 Jul 2019 16:17:45 +0000 (12:17 -0400)]
iommu/amd: fix a crash in iova_magazine_free_pfns
The commit
b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops
method") incorrectly changed the checking from dma_ops_alloc_iova() in
map_sg() causes a crash under memory pressure as dma_ops_alloc_iova()
never return DMA_MAPPING_ERROR on failure but 0, so the error handling
is all wrong.
kernel BUG at drivers/iommu/iova.c:801!
Workqueue: kblockd blk_mq_run_work_fn
RIP: 0010:iova_magazine_free_pfns+0x7d/0xc0
Call Trace:
free_cpu_cached_iovas+0xbd/0x150
alloc_iova_fast+0x8c/0xba
dma_ops_alloc_iova.isra.6+0x65/0xa0
map_sg+0x8c/0x2a0
scsi_dma_map+0xc6/0x160
pqi_aio_submit_io+0x1f6/0x440 [smartpqi]
pqi_scsi_queue_command+0x90c/0xdd0 [smartpqi]
scsi_queue_rq+0x79c/0x1200
blk_mq_dispatch_rq_list+0x4dc/0xb70
blk_mq_sched_dispatch_requests+0x249/0x310
__blk_mq_run_hw_queue+0x128/0x200
blk_mq_run_work_fn+0x27/0x30
process_one_work+0x522/0xa10
worker_thread+0x63/0x5b0
kthread+0x1d2/0x1f0
ret_from_fork+0x22/0x40
Fixes:
b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops method")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Tue, 30 Apr 2019 14:27:50 +0000 (17:27 +0300)]
hexagon: switch to generic version of pte allocation
The hexagon implementation pte_alloc_one(), pte_alloc_one_kernel(),
pte_free_kernel() and pte_free() is identical to the generic except of
lack of __GFP_ACCOUNT for the user PTEs allocation.
Switch hexagon to use generic version of these functions.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 21 Jul 2019 16:46:59 +0000 (09:46 -0700)]
Merge tag 'ntb-5.3' of git://github.com/jonmason/ntb
Pull NTB updates from Jon Mason:
"New feature to add support for NTB virtual MSI interrupts, the ability
to test and use this feature in the NTB transport layer.
Also, bug fixes for the AMD and Switchtec drivers, as well as some
general patches"
* tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits)
NTB: Describe the ntb_msi_test client in the documentation.
NTB: Add MSI interrupt support to ntb_transport
NTB: Add ntb_msi_test support to ntb_test
NTB: Introduce NTB MSI Test Client
NTB: Introduce MSI library
NTB: Rename ntb.c to support multiple source files in the module
NTB: Introduce functions to calculate multi-port resource index
NTB: Introduce helper functions to calculate logical port number
PCI/switchtec: Add module parameter to request more interrupts
PCI/MSI: Support allocating virtual MSI interrupts
ntb_hw_switchtec: Fix setup MW with failure bug
ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case
ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function
NTB: correct ntb_dev_ops and ntb_dev comment typos
NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask()
ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev()
NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed
NTB: ntb_hw_amd: set peer limit register
NTB: ntb_perf: Clear stale values in doorbell and command SPAD register
NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers
...
Al Viro [Sun, 21 Jul 2019 03:17:30 +0000 (23:17 -0400)]
typo fix: it's d_make_root, not d_make_inode...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Rob Herring [Tue, 16 Jul 2019 21:34:40 +0000 (15:34 -0600)]
dt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples
Now that examples are validated against the DT schema, an error with
required 'clocks' property missing is exposed:
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@
40020000: gpio@0: 'clocks' is a required property
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@
50020000: gpio@1000: 'clocks' is a required property
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@
50020000: gpio@2000: 'clocks' is a required property
Add the missing 'clocks' properties to the examples to fix the errors.
Fixes:
2c9239c125f0 ("dt-bindings: pinctrl: Convert stm32 pinctrl bindings to json-schema")
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 16 Jul 2019 20:21:56 +0000 (14:21 -0600)]
dt-bindings: iio: ad7124: Fix dtc warnings in example
With the conversion to DT schema, the examples are now compiled with
dtc. The ad7124 binding example has the following warning:
Documentation/devicetree/bindings/iio/adc/adi,ad7124.example.dts:19.11-21: \
Warning (reg_format): /example-0/adc@0:reg: property has invalid length (4 bytes) (#address-cells == 1, #size-cells == 1)
There's a default #size-cells and #address-cells values of 1 for
examples. For examples needing different values such as this one on a
SPI bus, they need to provide a SPI bus parent node.
Fixes:
26ae15e62d3c ("Convert AD7124 bindings documentation to YAML format.")
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 16 Jul 2019 20:13:29 +0000 (14:13 -0600)]
dt-bindings: iio: avia-hx711: Fix avdd-supply typo in example
Now that examples are validated against the DT schema, a typo in
avia-hx711 example generates a warning:
Documentation/devicetree/bindings/iio/adc/avia-hx711.example.dt.yaml: weight: 'avdd-supply' is a required property
Fix the typo.
Fixes:
5150ec3fe125 ("avia-hx711.yaml: transform DT binding to YAML")
Cc: Andreas Klinger <ak@it-klinger.de>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 15 Jul 2019 22:48:41 +0000 (16:48 -0600)]
dt-bindings: pinctrl: aspeed: Fix AST2500 example errors
The schema examples are now validated against the schema itself. The
AST2500 pinctrl schema has a couple of errors:
Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.example.dt.yaml: \
example-0: $nodename:0: 'example-0' does not match '^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.example.dt.yaml: \
pinctrl: aspeed,external-nodes: [[1, 2]] is too short
Fixes:
0a617de16730 ("dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema")
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 15 Jul 2019 22:37:25 +0000 (16:37 -0600)]
dt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors
The Aspeed pinctl schema have errors in the 'compatible' schema:
Documentation/devicetree/bindings/pinctrl/aspeed,ast2400-pinctrl.yaml: \
properties:compatible:enum: ['aspeed', 'ast2400-pinctrl', 'aspeed', 'g4-pinctrl'] has non-unique elements
Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.yaml: \
properties:compatible:enum: ['aspeed', 'ast2500-pinctrl', 'aspeed', 'g5-pinctrl'] has non-unique elements
Flow style sequences have to be quoted if the vales contain ','. Fix
this by using the more common one line per entry formatting.
Fixes:
0a617de16730 ("dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema")
Fixes:
07457937bb5c ("dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema")
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 26 Jun 2019 23:57:59 +0000 (17:57 -0600)]
dt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes
Matching on the 'cpus' node was a bad choice because the schema is
incorrectly applied to non-RiscV cpus nodes. As we now have a common cpus
schema which checks the general structure, it is also redundant to do so
in the Risc-V CPU schema.
The downside is one could conceivably mix different architecture's cpu
nodes or have typos in the compatible string. The latter problem pretty
much exists for every schema.
Acked-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 3 Jul 2019 20:17:06 +0000 (14:17 -0600)]
dt-bindings: Ensure child nodes are of type 'object'
Properties which are child node definitions need to have an explict
type. Otherwise, a matching (DT) property can silently match when an
error is desired. Fix this up tree-wide. Once this is fixed, the
meta-schema will enforce this on any child node definitions.
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-spi@vger.kernel.org
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Linus Torvalds [Sat, 20 Jul 2019 19:22:30 +0000 (12:22 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull more input updates from Dmitry Torokhov:
- Apple SPI keyboard and trackpad driver for newer Macs
- ALPS driver will ignore trackpoint-only devices to give the
trackpoint driver a chance to handle them properly
- another Lenovo is switched over to SMbus from PS/2
- assorted driver fixups.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: alps - fix a mismatch between a condition check and its comment
Input: psmouse - fix build error of multiple definition
Input: applespi - remove set but not used variables 'sts'
Input: add Apple SPI keyboard and trackpad driver
Input: alps - don't handle ALPS cs19 trackpoint-only device
Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer
Input: adp5589 - initialize GPIO controller parent device
Input: iforce - remove empty multiline comments
Input: synaptics - fix misuse of strlcpy
Input: auo-pixcir-ts - switch to using devm_add_action_or_reset()
Input: gtco - bounds check collection indent level
Input: mtk-pmic-keys - add of_node_put() before return
Input: sun4i-lradc-keys - add of_node_put() before return
Input: synaptics - whitelist Lenovo T580 SMBus intertouch
Linus Torvalds [Sat, 20 Jul 2019 19:09:52 +0000 (12:09 -0700)]
Merge tag 'dma-mapping-5.3-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"Fix various regressions:
- force unencrypted dma-coherent buffers if encryption bit can't fit
into the dma coherent mask (Tom Lendacky)
- avoid limiting request size if swiotlb is not used (me)
- fix swiotlb handling in dma_direct_sync_sg_for_cpu/device (Fugang
Duan)"
* tag 'dma-mapping-5.3-1' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: correct the physical addr in dma_direct_sync_sg_for_cpu/device
dma-direct: only limit the mapping size if swiotlb could be used
dma-mapping: add a dma_addressing_limited helper
dma-direct: Force unencrypted DMA under SME for certain DMA masks
Linus Torvalds [Sat, 20 Jul 2019 18:24:49 +0000 (11:24 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of x86 specific fixes and updates:
- The CR2 corruption fixes which store CR2 early in the entry code
and hand the stored address to the fault handlers.
- Revert a forgotten leftover of the dropped FSGSBASE series.
- Plug a memory leak in the boot code.
- Make the Hyper-V assist functionality robust by zeroing the shadow
page.
- Remove a useless check for dead processes with LDT
- Update paravirt and VMware maintainers entries.
- A few cleanup patches addressing various compiler warnings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/64: Prevent clobbering of saved CR2 value
x86/hyper-v: Zero out the VP ASSIST PAGE on allocation
x86, boot: Remove multiple copy of static function sanitize_boot_params()
x86/boot/compressed/64: Remove unused variable
x86/boot/efi: Remove unused variables
x86/mm, tracing: Fix CR2 corruption
x86/entry/64: Update comments and sanity tests for create_gap
x86/entry/64: Simplify idtentry a little
x86/entry/32: Simplify common_exception
x86/paravirt: Make read_cr2() CALLEE_SAVE
MAINTAINERS: Update PARAVIRT_OPS_INTERFACE and VMWARE_HYPERVISOR_INTERFACE
x86/process: Delete useless check for dead process with LDT
x86: math-emu: Hide clang warnings for 16-bit overflow
x86/e820: Use proper booleans instead of 0/1
x86/apic: Silence -Wtype-limits compiler warnings
x86/mm: Free sme_early_buffer after init
x86/boot: Fix memory leak in default_get_smp_config()
Revert "x86/ptrace: Prevent ptrace from clearing the FS/GS selector" and fix the test
Linus Torvalds [Sat, 20 Jul 2019 18:06:12 +0000 (11:06 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf tooling updates from Thomas Gleixner:
"A set of perf improvements and fixes:
perf db-export:
- Improvements in how COMM details are exported to databases for post
processing and use in the sql-viewer.py UI.
- Export switch events to the database.
BPF:
- Bump rlimit(MEMLOCK) for 'perf test bpf' and 'perf trace', just
like selftests/bpf/bpf_rlimit.h do, which makes errors due to
exhaustion of this limit, which are kinda cryptic (EPERM sometimes)
less frequent.
perf version:
- Fix segfault due to missing OPT_END(), noticed on PowerPC.
perf vendor events:
- Add JSON files for IBM s/390 machine type 8561.
perf cs-etm (ARM):
- Fix two cases of error returns not bing done properly: Invalid
ERR_PTR() use and loss of propagation error codes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
perf version: Fix segfault due to missing OPT_END()
perf vendor events s390: Add JSON files for machine type 8561
perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()
perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info
perf scripts python: export-to-postgresql.py: Export switch events
perf scripts python: export-to-sqlite.py: Export switch events
perf db-export: Export switch events
perf db-export: Factor out db_export__threads()
perf script: Add scripting operation process_switch()
perf scripts python: exported-sql-viewer.py: Use new 'has_calls' column
perf scripts python: exported-sql-viewer.py: Remove redundant semi-colons
perf scripts python: export-to-postgresql.py: Add has_calls column to comms table
perf scripts python: export-to-sqlite.py: Add has_calls column to comms table
perf db-export: Also export thread's current comm
perf db-export: Factor out db_export__comm()
perf scripts python: export-to-postgresql.py: Export comm details
perf scripts python: export-to-sqlite.py: Export comm details
perf db-export: Export comm details
perf db-export: Fix a white space issue in db_export__sample()
perf db-export: Move export__comm_thread into db_export__sample()
...
Linus Torvalds [Sat, 20 Jul 2019 17:45:15 +0000 (10:45 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull core fixes from Thomas Gleixner:
- A collection of objtool fixes which address recent fallout partially
exposed by newer toolchains, clang, BPF and general code changes.
- Force USER_DS for user stack traces
[ Note: the "objtool fixes" are not all to objtool itself, but for
kernel code that triggers objtool warnings.
Things like missing function size annotations, or code that confuses
the unwinder etc. - Linus]
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
objtool: Support conditional retpolines
objtool: Convert insn type to enum
objtool: Fix seg fault on bad switch table entry
objtool: Support repeated uses of the same C jump table
objtool: Refactor jump table code
objtool: Refactor sibling call detection logic
objtool: Do frame pointer check before dead end check
objtool: Change dead_end_function() to return boolean
objtool: Warn on zero-length functions
objtool: Refactor function alias logic
objtool: Track original function across branches
objtool: Add mcsafe_handle_tail() to the uaccess safe list
bpf: Disable GCC -fgcse optimization for ___bpf_prog_run()
x86/uaccess: Remove redundant CLACs in getuser/putuser error paths
x86/uaccess: Don't leak AC flag into fentry from mcsafe_handle_tail()
x86/uaccess: Remove ELF function annotation from copy_user_handle_tail()
x86/head/64: Annotate start_cpu0() as non-callable
x86/entry: Fix thunk function ELF sizes
x86/kvm: Don't call kvm_spurious_fault() from .fixup
x86/kvm: Replace vmx_vmenter()'s call to kvm_spurious_fault() with UD2
...
Linus Torvalds [Sat, 20 Jul 2019 17:43:03 +0000 (10:43 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull smp fix from Thomas Gleixner:
"Add warnings to the smp function calls so callers from wrong contexts
get detected"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp: Warn on function calls from softirq context
Linus Torvalds [Sat, 20 Jul 2019 17:33:44 +0000 (10:33 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull CONFIG_PREEMPT_RT stub config from Thomas Gleixner:
"The real-time preemption patch set exists for almost 15 years now and
while the vast majority of infrastructure and enhancements have found
their way into the mainline kernel, the final integration of RT is
still missing.
Over the course of the last few years, we have worked on reducing the
intrusivenness of the RT patches by refactoring kernel infrastructure
to be more real-time friendly. Almost all of these changes were
benefitial to the mainline kernel on their own, so there was no
objection to integrate them.
Though except for the still ongoing printk refactoring, the remaining
changes which are required to make RT a first class mainline citizen
are not longer arguable as immediately beneficial for the mainline
kernel. Most of them are either reordering code flows or adding RT
specific functionality.
But this now has hit a wall and turned into a classic hen and egg
problem:
Maintainers are rightfully wary vs. these changes as they make only
sense if the final integration of RT into the mainline kernel takes
place.
Adding CONFIG_PREEMPT_RT aims to solve this as a clear sign that RT
will be fully integrated into the mainline kernel. The final
integration of the missing bits and pieces will be of course done with
the same careful approach as we have used in the past.
While I'm aware that you are not entirely enthusiastic about that, I
think that RT should receive the same treatment as any other widely
used out of tree functionality, which we have accepted into mainline
over the years.
RT has become the de-facto standard real-time enhancement and is
shipped by enterprise, embedded and community distros. It's in use
throughout a wide range of industries: telecommunications, industrial
automation, professional audio, medical devices, data acquisition,
automotive - just to name a few major use cases.
RT development is backed by a Linuxfoundation project which is
supported by major stakeholders of this technology. The funding will
continue over the actual inclusion into mainline to make sure that the
functionality is neither introducing regressions, regressing itself,
nor becomes subject to bitrot. There is also a lifely user community
around RT as well, so contrary to the grim situation 5 years ago, it's
a healthy project.
As RT is still a good vehicle to exercise rarely used code paths and
to detect hard to trigger issues, you could at least view it as a QA
tool if nothing else"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/rt, Kconfig: Introduce CONFIG_PREEMPT_RT
Linus Torvalds [Sat, 20 Jul 2019 17:20:27 +0000 (10:20 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull more KVM updates from Paolo Bonzini:
"Mostly bugfixes, but also:
- s390 support for KVM selftests
- LAPIC timer offloading to housekeeping CPUs
- Extend an s390 optimization for overcommitted hosts to all
architectures
- Debugging cleanups and improvements"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits)
KVM: x86: Add fixed counters to PMU filter
KVM: nVMX: do not use dangling shadow VMCS after guest reset
KVM: VMX: dump VMCS on failed entry
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
KVM: Boost vCPUs that are delivering interrupts
KVM: selftests: Remove superfluous define from vmx.c
KVM: SVM: Fix detection of AMD Errata 1096
KVM: LAPIC: Inject timer interrupt via posted interrupt
KVM: LAPIC: Make lapic timer unpinned
KVM: x86/vPMU: reset pmc->counter to 0 for pmu fixed_counters
KVM: nVMX: Ignore segment base for VMX memory operand when segment not FS or GS
kvm: x86: ioapic and apic debug macros cleanup
kvm: x86: some tsc debug cleanup
kvm: vmx: fix coccinelle warnings
x86: kvm: avoid constant-conversion warning
x86: kvm: avoid -Wsometimes-uninitized warning
KVM: x86: expose AVX512_BF16 feature to guest
KVM: selftests: enable pgste option for the linker on s390
KVM: selftests: Move kvm_create_max_vcpus test to generic code
...
Linus Torvalds [Sat, 20 Jul 2019 17:04:58 +0000 (10:04 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is the final round of mostly small fixes in our initial submit.
It's mostly minor fixes and driver updates. The only change of note is
adding a virt_boundary_mask to the SCSI host and host template to
parametrise this for NVMe devices instead of having them do a call in
slave_alloc. It's a fairly straightforward conversion except in the
two NVMe handling drivers that didn't set it who now have a virtual
infinity parameter added"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
scsi: megaraid_sas: set an unlimited max_segment_size
scsi: mpt3sas: set an unlimited max_segment_size for SAS 3.0 HBAs
scsi: IB/srp: set virt_boundary_mask in the scsi host
scsi: IB/iser: set virt_boundary_mask in the scsi host
scsi: storvsc: set virt_boundary_mask in the scsi host template
scsi: ufshcd: set max_segment_size in the scsi host template
scsi: core: take the DMA max mapping size into account
scsi: core: add a host / host template field for the virt boundary
scsi: core: Fix race on creating sense cache
scsi: sd_zbc: Fix compilation warning
scsi: libfc: fix null pointer dereference on a null lport
scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
scsi: zfcp: fix request object use-after-free in send path causing wrong traces
scsi: zfcp: fix request object use-after-free in send path causing seqno errors
scsi: megaraid_sas: Update driver version to 07.710.50.00
scsi: megaraid_sas: Add module parameter for FW Async event logging
scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers
scsi: megaraid_sas: Fix calculation of target ID
scsi: lpfc: reduce stack size with CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE
scsi: devinfo: BLIST_TRY_VPD_PAGES for SanDisk Cruzer Blade
...
Linus Torvalds [Sat, 20 Jul 2019 16:34:55 +0000 (09:34 -0700)]
Merge tag 'kbuild-v5.3-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- match the directory structure of the linux-libc-dev package to that
of Debian-based distributions
- fix incorrect include/config/auto.conf generation when Kconfig
creates it along with the .config file
- remove misleading $(AS) from documents
- clean up precious tag files by distclean instead of mrproper
- add a new coccinelle patch for devm_platform_ioremap_resource
migration
- refactor module-related scripts to read modules.order instead of
$(MODVERDIR)/*.mod files to get the list of created modules
- remove MODVERDIR
- update list of header compile-test
- add -fcf-protection=none flag to avoid conflict with the retpoline
flags when CONFIG_RETPOLINE=y
- misc cleanups
* tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
kbuild: add -fcf-protection=none when using retpoline flags
kbuild: update compile-test header list for v5.3-rc1
kbuild: split out *.mod out of {single,multi}-used-m rules
kbuild: remove 'prepare1' target
kbuild: remove the first line of *.mod files
kbuild: create *.mod with full directory path and remove MODVERDIR
kbuild: export_report: read modules.order instead of .tmp_versions/*.mod
kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod
kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod
kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod
scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver
kbuild: remove duplication from modules.order in sub-directories
kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}
kbuild: do not create empty modules.order in the prepare stage
coccinelle: api: add devm_platform_ioremap_resource script
kbuild: compile-test headers listed in header-test-m as well
kbuild: remove unused hostcc-option
kbuild: remove tag files by distclean instead of mrproper
kbuild: add --hash-style= and --build-id unconditionally
kbuild: get rid of misleading $(AS) from documents
...
Linus Torvalds [Sat, 20 Jul 2019 16:15:51 +0000 (09:15 -0700)]
Merge branch 'work.dcache2' of git://git./linux/kernel/git/viro/vfs
Pull dcache and mountpoint updates from Al Viro:
"Saner handling of refcounts to mountpoints.
Transfer the counting reference from struct mount ->mnt_mountpoint
over to struct mountpoint ->m_dentry. That allows us to get rid of the
convoluted games with ordering of mount shutdowns.
The cost is in teaching shrink_dcache_{parent,for_umount} to cope with
mixed-filesystem shrink lists, which we'll also need for the Slab
Movable Objects patchset"
* 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
switch the remnants of releasing the mountpoint away from fs_pin
get rid of detach_mnt()
make struct mountpoint bear the dentry reference to mountpoint, not struct mount
Teach shrink_dcache_parent() to cope with mixed-filesystem shrink lists
fs/namespace.c: shift put_mountpoint() to callers of unhash_mnt()
__detach_mounts(): lookup_mountpoint() can't return ERR_PTR() anymore
nfs: dget_parent() never returns NULL
ceph: don't open-code the check for dead lockref
Thomas Gleixner [Sat, 20 Jul 2019 08:56:41 +0000 (10:56 +0200)]
x86/entry/64: Prevent clobbering of saved CR2 value
The recent fix for CR2 corruption introduced a new way to reliably corrupt
the saved CR2 value.
CR2 is saved early in the entry code in RDX, which is the third argument to
the fault handling functions. But it missed that between saving and
invoking the fault handler enter_from_user_mode() can be called. RDX is a
caller saved register so the invoked function can freely clobber it with
the obvious consequences.
The TRACE_IRQS_OFF call is safe as it calls through the thunk which
preserves RDX, but TRACE_IRQS_OFF_DEBUG is not because it also calls into
C-code outside of the thunk.
Store CR2 in R12 instead which is a callee saved register and move R12 to
RDX just before calling the fault handler.
Fixes:
a0d14b8909de ("x86/mm, tracing: Fix CR2 corruption")
Reported-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1907201020540.1782@nanos.tec.linutronix.de
Peter Zijlstra [Thu, 18 Jul 2019 09:20:09 +0000 (11:20 +0200)]
smp: Warn on function calls from softirq context
It's clearly documented that smp function calls cannot be invoked from
softirq handling context. Unfortunately nothing enforces that or emits a
warning.
A single function call can be invoked from softirq context only via
smp_call_function_single_async().
The only legit context is task context, so add a warning to that effect.
Reported-by: luferry <luferry@163.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190718160601.GP3402@hirez.programming.kicks-ass.net
Eric Hankland [Thu, 18 Jul 2019 18:38:18 +0000 (11:38 -0700)]
KVM: x86: Add fixed counters to PMU filter
Updates KVM_CAP_PMU_EVENT_FILTER so it can also whitelist or blacklist
fixed counters.
Signed-off-by: Eric Hankland <ehankland@google.com>
[No need to check padding fields for zero. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Fri, 19 Jul 2019 16:41:10 +0000 (18:41 +0200)]
KVM: nVMX: do not use dangling shadow VMCS after guest reset
If a KVM guest is reset while running a nested guest, free_nested will
disable the shadow VMCS execution control in the vmcs01. However,
on the next KVM_RUN vmx_vcpu_run would nevertheless try to sync
the VMCS12 to the shadow VMCS which has since been freed.
This causes a vmptrld of a NULL pointer on my machime, but Jan reports
the host to hang altogether. Let's see how much this trivial patch fixes.
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Liran Alon <liran.alon@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Fri, 19 Jul 2019 16:15:08 +0000 (18:15 +0200)]
KVM: VMX: dump VMCS on failed entry
This is useful for debugging, and is ratelimited nowadays.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Like Xu [Thu, 18 Jul 2019 05:35:14 +0000 (13:35 +0800)]
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
If a perf_event creation fails due to any reason of the host perf
subsystem, it has no chance to log the corresponding event for guest
which may cause abnormal sampling data in guest result. In debug mode,
this message helps to understand the state of vPMC and we may not
limit the number of occurrences but not in a spamming style.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wanpeng Li [Thu, 18 Jul 2019 11:39:07 +0000 (19:39 +0800)]
KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
Use kvm_vcpu_wake_up() in kvm_s390_vcpu_wakeup().
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wanpeng Li [Thu, 18 Jul 2019 11:39:06 +0000 (19:39 +0800)]
KVM: Boost vCPUs that are delivering interrupts
Inspired by commit
9cac38dd5d (KVM/s390: Set preempted flag during
vcpu wakeup and interrupt delivery), we want to also boost not just
lock holders but also vCPUs that are delivering interrupts. Most
smp_call_function_many calls are synchronous, so the IPI target vCPUs
are also good yield candidates. This patch introduces vcpu->ready to
boost vCPUs during wakeup and interrupt delivery time; unlike s390 we do
not reuse vcpu->preempted so that voluntarily preempted vCPUs are taken
into account by kvm_vcpu_on_spin, but vmx_vcpu_pi_put is not affected
(VT-d PI handles voluntary preemption separately, in pi_pre_block).
Testing on 80 HT 2 socket Xeon Skylake server, with 80 vCPUs VM 80GB RAM:
ebizzy -M
vanilla boosting improved
1VM 21443 23520 9%
2VM 2800 8000 180%
3VM 1800 3100 72%
Testing on my Haswell desktop 8 HT, with 8 vCPUs VM 8GB RAM, two VMs,
one running ebizzy -M, the other running 'stress --cpu 2':
w/ boosting + w/o pv sched yield(vanilla)
vanilla boosting improved
1570 4000 155%
w/ boosting + w/ pv sched yield(vanilla)
vanilla boosting improved
1844 5157 179%
w/o boosting, perf top in VM:
72.33% [kernel] [k] smp_call_function_many
4.22% [kernel] [k] call_function_i
3.71% [kernel] [k] async_page_fault
w/ boosting, perf top in VM:
38.43% [kernel] [k] smp_call_function_many
6.31% [kernel] [k] async_page_fault
6.13% libc-2.23.so [.] __memcpy_avx_unaligned
4.88% [kernel] [k] call_function_interrupt
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Thomas Huth [Thu, 18 Jul 2019 11:55:27 +0000 (13:55 +0200)]
KVM: selftests: Remove superfluous define from vmx.c
The code in vmx.c does not use "program_invocation_name", so there
is no need to "#define _GNU_SOURCE" here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Liran Alon [Tue, 16 Jul 2019 23:56:58 +0000 (02:56 +0300)]
KVM: SVM: Fix detection of AMD Errata 1096
When CPU raise #NPF on guest data access and guest CR4.SMAP=1, it is
possible that CPU microcode implementing DecodeAssist will fail
to read bytes of instruction which caused #NPF. This is AMD errata
1096 and it happens because CPU microcode reading instruction bytes
incorrectly attempts to read code as implicit supervisor-mode data
accesses (that is, just like it would read e.g. a TSS), which are
susceptible to SMAP faults. The microcode reads CS:RIP and if it is
a user-mode address according to the page tables, the processor
gives up and returns no instruction bytes. In this case,
GuestIntrBytes field of the VMCB on a VMEXIT will incorrectly
return 0 instead of the correct guest instruction bytes.
Current KVM code attemps to detect and workaround this errata, but it
has multiple issues:
1) It mistakenly checks if guest CR4.SMAP=0 instead of guest CR4.SMAP=1,
which is required for encountering a SMAP fault.
2) It assumes SMAP faults can only occur when guest CPL==3.
However, in case guest CR4.SMEP=0, the guest can execute an instruction
which reside in a user-accessible page with CPL<3 priviledge. If this
instruction raise a #NPF on it's data access, then CPU DecodeAssist
microcode will still encounter a SMAP violation. Even though no sane
OS will do so (as it's an obvious priviledge escalation vulnerability),
we still need to handle this semanticly correct in KVM side.
Note that (2) *is* a useful optimization, because CR4.SMAP=1 is an easy
triggerable condition and guests usually enable SMAP together with SMEP.
If the vCPU has CR4.SMEP=1, the errata could indeed be encountered onlt
at guest CPL==3; otherwise, the CPU would raise a SMEP fault to guest
instead of #NPF. We keep this condition to avoid false positives in
the detection of the errata.
In addition, to avoid future confusion and improve code readbility,
include details of the errata in code and not just in commit message.
Fixes:
05d5a4863525 ("KVM: SVM: Workaround errata#1096 (insn_len maybe zero on SMAP violation)")
Cc: Singh Brijesh <brijesh.singh@amd.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wanpeng Li [Sat, 6 Jul 2019 01:26:51 +0000 (09:26 +0800)]
KVM: LAPIC: Inject timer interrupt via posted interrupt
Dedicated instances are currently disturbed by unnecessary jitter due
to the emulated lapic timers firing on the same pCPUs where the
vCPUs reside. There is no hardware virtual timer on Intel for guest
like ARM, so both programming timer in guest and the emulated timer fires
incur vmexits. This patch tries to avoid vmexit when the emulated timer
fires, at least in dedicated instance scenario when nohz_full is enabled.
In that case, the emulated timers can be offload to the nearest busy
housekeeping cpus since APICv has been found for several years in server
processors. The guest timer interrupt can then be injected via posted interrupts,
which are delivered by the housekeeping cpu once the emulated timer fires.
The host should tuned so that vCPUs are placed on isolated physical
processors, and with several pCPUs surplus for busy housekeeping.
If disabled mwait/hlt/pause vmexits keep the vCPUs in non-root mode,
~3% redis performance benefit can be observed on Skylake server, and the
number of external interrupt vmexits drops substantially. Without patch
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
EXTERNAL_INTERRUPT 42916 49.43% 39.30% 0.47us 106.09us 0.71us ( +- 1.09% )
While with patch:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
EXTERNAL_INTERRUPT 6871 9.29% 2.96% 0.44us 57.88us 0.72us ( +- 4.02% )
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Dmitry Torokhov [Sat, 20 Jul 2019 04:07:56 +0000 (07:07 +0300)]
Merge branch 'next' into for-linus
Prepare second round of input updates for 5.3 merge window.
Seth Forshee [Wed, 17 Jul 2019 16:06:26 +0000 (11:06 -0500)]
kbuild: add -fcf-protection=none when using retpoline flags
The gcc -fcf-protection=branch option is not compatible with
-mindirect-branch=thunk-extern. The latter is used when
CONFIG_RETPOLINE is selected, and this will fail to build with
a gcc which has -fcf-protection=branch enabled by default. Adding
-fcf-protection=none when building with retpoline enabled
prevents such build failures.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Wed, 17 Jul 2019 06:29:13 +0000 (15:29 +0900)]
kbuild: update compile-test header list for v5.3-rc1
- Some headers graduated from the blacklist
- hyperv_timer.h joined the header-test when CONFIG_X86=y
- nf_tables*.h joined the header-test when CONFIG_NF_TABLES is
enabled.
- The entry for nf_tables_offload.h was added to fix build error for
the combination of CONFIG_NF_TABLES=n and CONFIG_KERNEL_HEADER_TEST=y.
- The entry for iomap.h was added because this header is supposed to
be included only when CONFIG_BLOCK=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>