platform/kernel/linux-rpi.git
3 years agoDocumentation/submitting-patches: Add blurb about backtraces in commit messages
Borislav Petkov [Tue, 22 Dec 2020 13:05:55 +0000 (14:05 +0100)]
Documentation/submitting-patches: Add blurb about backtraces in commit messages

Document that backtraces in commit messages should be trimmed down to
the useful information only.

This has been carved out from a tip subsystem handbook patchset by
Thomas Gleixner:

  https://lkml.kernel.org/r/20181107171010.421878737@linutronix.de

and incorporates follow-on comments.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocs: drop Python 2 support
Jonathan Corbet [Tue, 2 Feb 2021 00:17:14 +0000 (17:17 -0700)]
Docs: drop Python 2 support

The kernel build system as a whole is dropping support for Python 2, so we
should do the same.  The effects are rather small, especially considering
that much of the deleted code was not doing anything under any version of
Python anyway.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoMove our minimum Sphinx version to 1.7
Jonathan Corbet [Mon, 1 Feb 2021 23:26:25 +0000 (16:26 -0700)]
Move our minimum Sphinx version to 1.7

As promised, drop support for some ancient sphinx releases, along with a
lot of the cruft that was required to make that support work.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: input: define ABS_PRESSURE/ABS_MT_PRESSURE resolution as grams
Peter Hutterer [Tue, 12 Jan 2021 23:03:10 +0000 (09:03 +1000)]
Documentation: input: define ABS_PRESSURE/ABS_MT_PRESSURE resolution as grams

ABS_PRESSURE and ABS_MT_PRESSURE on touch devices usually represent
contact size (as a finger flattens with higher pressure the contact size
increases) and userspace translates the kernel pressure value back into
contact size. For example, libinput has pressure thresholds when a touch is
considered a palm (palm == large contact area -> high pressure). The values
themselves are on an arbitrary scale and device-specific.

On pressurepads however, the pressure axis may represent the real physical
pressure. Pressurepads are touchpads without a hinge but an actual pressure
sensor underneath the device instead, for example the Lenovo Yoga 9i.

A high-enough pressure is converted to a button click by the firmware.
Microsoft does not require a pressure axis to be present, see [1], so as seen
from userspace most pressurepads are identical to clickpads - one button and
INPUT_PROP_BUTTONPAD set.

However, pressurepads that export the pressure axis break userspace because
that axis no longer represents contact size, resulting in inconsistent touch
tracking, e.g. [2]. Userspace needs to know when a pressure axis represents
real pressure and the best way to do so is to define what the resolution
field means. Userspace can then treat data with a pressure resolution as
true pressure.

This patch documents that the pressure resolution is in units/gram. This
allows for fine-grained detail and tops out at roughly ~2000t, enough for the
devices we're dealing with. Grams is not a scientific pressure unit but the
alternative is:
- Pascal: defined as force per area and area is unreliable on many devices and
  seems like the wrong option here anyway, especially for devices with a
  single pressure sensor only.
- Newton: defined as mass * distance/acceleration and for the purposes of a
  pressure axis, the distance is tricky to interpret and we get the data to
  calculate acceleration from event timestamps anyway.

For the purposes of touch devices and digitizers, grams seems the best choice
and the easiest to interpret.

Bonus side effect: we can use the existing hwdb infrastructure in userspace to
fix devices that advertise false pressure.

[1] https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/windows-precision-touchpad-required-hid-top-level-collections#windows-precision-touchpad-input-reports
[2] https://gitlab.freedesktop.org/libinput/libinput/-/issues/562

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20210112230310.GA149342@jelly
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoscripts/kernel-doc: add internal hyperlink to DOC: sections
Michal Wajdeczko [Mon, 18 Jan 2021 11:08:13 +0000 (12:08 +0100)]
scripts/kernel-doc: add internal hyperlink to DOC: sections

While DOC: section titles are not converted into RST headings
sections and are only decorated with strong emphasis markup,
nothing stops us from generating internal hyperlinks for them,
to mimic implicit hyperlinks to RST headings.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://lore.kernel.org/r/20210118110813.1490-1-michal.wajdeczko@intel.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoUpdate Documentation/admin-guide/sysctl/fs.rst
Eric Curtin [Wed, 20 Jan 2021 13:26:47 +0000 (13:26 +0000)]
Update Documentation/admin-guide/sysctl/fs.rst

max_user_watches for epoll should say 1/25, rather than 1/32

Signed-off-by: Eric Curtin <ericcurtin17@gmail.com>
Link: https://lore.kernel.org/r/20210120132648.19046-1-ericcurtin17@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: Update DTB format references
Milan Lakhani [Wed, 20 Jan 2021 13:31:51 +0000 (13:31 +0000)]
docs: Update DTB format references

There were two references to devicetree/booting-without-of.rst (which has
been removed) for DTB format information, and
devicetree/usage-model.rst pointed to
https://elinux.org/Device_Tree_Usage. Change all three of these references to
https://www.devicetree.org/specifications/.

Signed-off-by: Milan Lakhani <milan.lakhani@codethink.co.uk>
Link: https://lore.kernel.org/r/1611149511-4990-1-git-send-email-milan.lakhani@codethink.co.uk
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: zh_CN: add iio index.rst translation
Yanteng Si [Thu, 21 Jan 2021 03:33:02 +0000 (11:33 +0800)]
docs: zh_CN: add iio index.rst translation

This patch translates Documentation/iio/index.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Huacai Chen <chenhuacai@kernel.org>
Link: https://lore.kernel.org/r/20210121033302.558935-3-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/zh_CN: add iio ep93xx_adc.rst translation
Yanteng Si [Thu, 21 Jan 2021 03:33:01 +0000 (11:33 +0800)]
docs/zh_CN: add iio ep93xx_adc.rst translation

This patch translates Documentation/iio/ep93xx_adc.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Huacai Chen <chenhuacai@kernel.org>
Link: https://lore.kernel.org/r/20210121033302.558935-2-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/zh_CN: add iio iio_configfs.rst translation
Yanteng Si [Thu, 21 Jan 2021 03:33:00 +0000 (11:33 +0800)]
docs/zh_CN: add iio iio_configfs.rst translation

This patch translates Documentation/iio/iio_configfs.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Huacai Chen <chenhuacai@kernel.org>
Link: https://lore.kernel.org/r/20210121033302.558935-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: ARM: fix reference to DT format documentation
Baruch Siach [Mon, 25 Jan 2021 07:10:30 +0000 (09:10 +0200)]
Documentation: ARM: fix reference to DT format documentation

The booting-without-of.rst file is no longer there. Link to
devicetree.org instead.

Fixes: 441848282c590 ("dt: Remove booting-without-of.rst")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/7f07e544d9fc584242d496c2f54f9303d8de0724.1611558630.git.baruch@tkos.co.il
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation/admin-guide: kernel-parameters: update CMA entries
Randy Dunlap [Mon, 25 Jan 2021 04:32:02 +0000 (20:32 -0800)]
Documentation/admin-guide: kernel-parameters: update CMA entries

Add qualifying build option legend [CMA] to kernel boot options
that requirce CMA support to be enabled for them to be usable.

Also capitalize 'CMA' when it is used as an acronym.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Link: https://lore.kernel.org/r/20210125043202.22399-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: arm: marvell: Update link to unrestricted Armada 38x Functional Spec
Pali Rohár [Mon, 25 Jan 2021 14:15:29 +0000 (15:15 +0100)]
Documentation: arm: marvell: Update link to unrestricted Armada 38x Functional Spec

On Marvell website is documentation accessible without need to register or
fill any other forms.

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210125141529.32357-1-pali@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: arm: marvell: Fix dead link to Armada 37xx Product Brief
Pali Rohár [Mon, 25 Jan 2021 14:13:41 +0000 (15:13 +0100)]
Documentation: arm: marvell: Fix dead link to Armada 37xx Product Brief

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210125141341.32200-1-pali@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: arm: marvell: Add link to public Armada 37xx Hardware Spec
Pali Rohár [Thu, 21 Jan 2021 19:34:18 +0000 (20:34 +0100)]
Documentation: arm: marvell: Add link to public Armada 37xx Hardware Spec

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210121193418.22678-2-pali@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: arm: Fix marvell file name
Pali Rohár [Thu, 21 Jan 2021 19:34:17 +0000 (20:34 +0100)]
Documentation: arm: Fix marvell file name

Fixes: dc7a12bdfccd ("docs: arm: convert docs to ReST and rename to *.rst")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210121193418.22678-1-pali@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation/x86/boot.rst: Correct the example of SETUP_INDIRECT
Cao jin [Wed, 27 Jan 2021 08:49:11 +0000 (16:49 +0800)]
Documentation/x86/boot.rst: Correct the example of SETUP_INDIRECT

struct setup_data.len is the length of data field. In case of
SETUP_INDIRECT, it should be sizeof(setup_indirect).

Signed-off-by: Cao jin <jojing64@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Link: https://lore.kernel.org/r/20210127084911.63438-1-jojing64@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: kernel-parameters: add missing '<'
Wolfram Sang [Wed, 27 Jan 2021 10:43:43 +0000 (11:43 +0100)]
Documentation: kernel-parameters: add missing '<'

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210127104343.5647-1-wsa+renesas@sang-engineering.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoselftests: kselftest_harness.h: partially fix kernel-doc markups
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:46 +0000 (09:04 +0100)]
selftests: kselftest_harness.h: partially fix kernel-doc markups

The kernel-doc markups on this file are weird: they don't
follow what's specified at:

Documentation/doc-guide/kernel-doc.rst

In particular, markups should use this format:
        identifier - description

and not this:
identifier(args)

The way the definitions are inside this file cause the
parser to completely miss the identifier name of each
function.

This prevents improving the script to do some needed validation
tests.

Address this part. Yet, furter changes are needed in order
for it to fully follow the specs.

Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/8383758160fdb4fcbb2ac56beeb874ca6dffc6b9.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agow1: fix a kernel-doc markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:45 +0000 (09:04 +0100)]
w1: fix a kernel-doc markup

A function has a different name between their prototype
and its kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/2dc136ff6290d7c8919599d21bee244f31647c8c.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agomemblock: fix kernel-doc markups
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:44 +0000 (09:04 +0100)]
memblock: fix kernel-doc markups

Some identifiers have different names between their prototypes
and the kernel-doc markup.

Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/f3c65f61367993a607f9daf9dc1a3bdab1f0a040.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agolib/crc7: fix a kernel-doc markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:43 +0000 (09:04 +0100)]
lib/crc7: fix a kernel-doc markup

A function has a different name between their prototype
and its kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/1963266e84c6fb0154602f276b04887c85f80bd3.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoconnector: fix a kernel-doc markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:42 +0000 (09:04 +0100)]
connector: fix a kernel-doc markup

A function has a different name between their prototype
and its kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/889cfb141a98ae06d5bc79b744786ec2e8f92d93.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agofirmware: stratix10-svc: fix kernel-doc markups
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:41 +0000 (09:04 +0100)]
firmware: stratix10-svc: fix kernel-doc markups

There are some common comments marked, instead, with kernel-doc
notation, which won't work.

While here, rename an identifier, in order to match the
function prototype below kernel-doc markup.

Acked-by: Richard Gong <richard.gong@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/02a1eb47767e01e875d8840805b8b2d4f3c6bdee.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agopstore/zone: fix a kernel-doc markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:40 +0000 (09:04 +0100)]
pstore/zone: fix a kernel-doc markup

The documented struct is psz_head and not psz_buffer.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a67ca4d12c3ef277dadb9e0d0df8450158e637cc.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agofs: fix kernel-doc markups
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:39 +0000 (09:04 +0100)]
fs: fix kernel-doc markups

Two markups are at the wrong place. Kernel-doc only
support having the comment just before the identifier.

Also, some identifiers have different names between their
prototypes and the kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/96b1e1b388600ab092331f6c4e88ff8e8779ce6c.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agorapidio: fix kernel-doc a markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:38 +0000 (09:04 +0100)]
rapidio: fix kernel-doc a markup

Probaly this was due to a cut and paste issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/e23e64983788a51dd9099e2b0d881e1f64ecbc5b.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoparport: fix a kernel-doc markup
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:37 +0000 (09:04 +0100)]
parport: fix a kernel-doc markup

The kernel-doc markup inside share.c is actually for
__parport_register_driver. The actual goal seems to be
to document parport_register_driver().

So, fix the existing markup and add a new one.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/dc0778af8c466cc667409ead05876a5cfd3cbece.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoAFS: Documentation: fix a few typos in afs.rst
Randy Dunlap [Sun, 17 Jan 2021 21:33:51 +0000 (13:33 -0800)]
AFS: Documentation: fix a few typos in afs.rst

Fix typos (punctuation, grammar, spelling) in afs.rst.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20210117213351.1075-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/zh_CN: remove cn_index tag in mips
Alex Shi [Thu, 21 Jan 2021 02:41:13 +0000 (10:41 +0800)]
docs/zh_CN: remove cn_index tag in mips

It's a unused tag with a incorrect big name but just for mips arch.
So remove it.

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20210121024113.16344-1-alex.shi@linux.alibaba.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: iio: Correct a typo
Yanteng Si [Tue, 19 Jan 2021 03:03:20 +0000 (11:03 +0800)]
docs: iio: Correct a typo

There are two EP9312, one of them should be 9315

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20210119030320.2860870-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoarch/Kconfig: update a broken file reference
Lukas Bulwahn [Tue, 19 Jan 2021 09:53:26 +0000 (10:53 +0100)]
arch/Kconfig: update a broken file reference

Commit adab66b71abf ("Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS"")
added the config HAVE_64BIT_ALIGNED_ACCESS back into arch/Kconfig with this
revert. In the meantime, commit c9b54d6f362c ("docs: move other kAPI
documents to core-api") changed ./Documentation/unaligned-memory-access.txt
to ./Documentation/core-api/unaligned-memory-access.rst.

Fortunately, ./scripts/documentation-file-ref-check detects this and warns
about this broken reference.

Update the file reference in arch/Kconfig.

Fixes: adab66b71abf ("Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS"")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20210119095326.13896-1-lukas.bulwahn@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/admin-guide/cgroup-v2: fix mount opt rendering
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:24 +0000 (16:18 -0800)]
docs/admin-guide/cgroup-v2: fix mount opt rendering

Due to an extra empty line between the option and its description
it is rendered not like in other places.

Remove the empty lines to fix.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-11-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/admin-guide/cgroup-v2: nit
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:23 +0000 (16:18 -0800)]
docs/admin-guide/cgroup-v2: nit

Improper Capitalization.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-10-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/admin-guide/cgroup-v2: use tables
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:22 +0000 (16:18 -0800)]
doc/admin-guide/cgroup-v2: use tables

These two places are rendered like a table in the source (rst) code,
but they are seen as plain text by formatters, and thus are joined
together into a single line, e.g.:

> “root” - a partition root “member” - a non-root member of a partition

This is definitely not what was intended.

To fix, use table formatting, like in other places.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-9-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/admin-guide: cgroup-v2: fix cgroup.type rendering
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:21 +0000 (16:18 -0800)]
docs/admin-guide: cgroup-v2: fix cgroup.type rendering

Due to an extra vertical whitespace, this was not recognised
as a definition list entry, and thus was not rendered like
the rest of cgroupfs files.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-8-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/admin-guide: cgroup-v2: typos and spaces
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:20 +0000 (16:18 -0800)]
docs/admin-guide: cgroup-v2: typos and spaces

- fix a typo (mempry -> memory) in a file name;
- add space before "(" where appropriate.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-7-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/scheduler/sched-bwc: note/link cgroup v2
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:19 +0000 (16:18 -0800)]
docs/scheduler/sched-bwc: note/link cgroup v2

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-6-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/scheduler/sched-bwc: fix note rendering
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:17 +0000 (16:18 -0800)]
docs/scheduler/sched-bwc: fix note rendering

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-4-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/scheduler/sched-design-CFS: formatting fix
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:16 +0000 (16:18 -0800)]
docs/scheduler/sched-design-CFS: formatting fix

Fix the rendering of the paragraph. Before the fix, the first line is
rendered in bold (I'm not quite sure why) and is also separated from the
rest of the paragraph, which is rendered with an indent.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-3-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/scheduler/sched-bwc: formatting fix
Kir Kolyshkin [Wed, 20 Jan 2021 00:18:15 +0000 (16:18 -0800)]
docs/scheduler/sched-bwc: formatting fix

Since commit d6a3b247627a3 these three lines are merged into one by the
RST processor, making it hard to read. Use bullet points to separate
the entries, like it's done in other similar places.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210120001824.385168-2-kolyshkin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoscripts: kernel-doc: validate kernel-doc markup with the actual names
Mauro Carvalho Chehab [Thu, 14 Jan 2021 08:04:47 +0000 (09:04 +0100)]
scripts: kernel-doc: validate kernel-doc markup with the actual names

Kernel-doc currently expects that the kernel-doc markup to come
just before the function/enum/struct/union/typedef prototype.

Yet, if it find things like:

/**
 * refcount_add - add a value to a refcount
 * @i: the value to add to the refcount
 * @r: the refcount
 */
static inline void __refcount_add(int i, refcount_t *r, int *oldp);
static inline void refcount_add(int i, refcount_t *r);

Kernel-doc will do the wrong thing:

foobar.h:6: warning: Function parameter or member 'oldp' not described in '__refcount_add'
.. c:function:: void __refcount_add (int i, refcount_t *r, int *oldp)

   add a value to a refcount

**Parameters**

``int i``
  the value to add to the refcount

``refcount_t *r``
  the refcount

``int *oldp``
  *undescribed*

Basically, it will document "__refcount_add" with the kernel-doc
markup for refcount_add.

If both functions have the same arguments, this won't even
produce any warning!

Add a logic to check if the kernel-doc identifier matches the actual
name of the C function or data structure that will be documented.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/081546f141a496d6cabb99a4adc140444c705e93.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: fix typos in split page table lock description
Rolf Eike Beer [Tue, 12 Jan 2021 13:19:36 +0000 (14:19 +0100)]
Documentation: fix typos in split page table lock description

Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Link: https://lore.kernel.org/r/2338863.uUFqZTUbry@devpool47
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: Remove make headers_check from checklist
Milan Lakhani [Tue, 12 Jan 2021 13:41:01 +0000 (13:41 +0000)]
docs: Remove make headers_check from checklist

Remove the make headers_check step from submit-checklist.rst as this is
no longer functional.

Signed-off-by: Milan Lakhani <milan.lakhani@codethink.co.uk>
Link: https://lore.kernel.org/r/1610458861-2832-1-git-send-email-milan.lakhani@codethink.co.uk
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agosamples/kprobes: Add ARM support
Marc Koderer [Tue, 12 Jan 2021 15:40:54 +0000 (16:40 +0100)]
samples/kprobes: Add ARM support

Plenty of architectures are already supported and this adds ARM
support.

Signed-off-by: Marc Koderer <marc@koderer.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20210112154054.17138-1-marc@koderer.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: submitting-patches: Emphasise the requirement to Cc: stable when using Fixes...
Lee Jones [Wed, 13 Jan 2021 16:33:15 +0000 (16:33 +0000)]
docs: submitting-patches: Emphasise the requirement to Cc: stable when using Fixes: tag

Clear-up any confusion surrounding the Fixes: tag with regards to the
need to Cc: the stable mailing list when submitting stable patch
candidates.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20210113163315.1331064-1-lee.jones@linaro.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/kokr: Link memory-barriers.txt to rst
SeongJae Park [Sun, 17 Jan 2021 10:09:31 +0000 (11:09 +0100)]
docs/kokr: Link memory-barriers.txt to rst

This commit links Korean translation of 'memory-barriers.txt' in the
translations index rst file as the original version is linked in
'Documentation/staging/index.rst'.

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Link: https://lore.kernel.org/r/20210117100931.9347-4-sj38.park@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs/kokr: make reporting-bugs.rst obsolete
SeongJae Park [Sun, 17 Jan 2021 10:09:30 +0000 (11:09 +0100)]
docs/kokr: make reporting-bugs.rst obsolete

Translate this commit to Korean:

    da514157c4f0 ("docs: make reporting-bugs.rst obsolete")

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Link: https://lore.kernel.org/r/20210117100931.9347-3-sj38.park@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation/kokr/howto: Replace HTTP links with HTTPS ones: Documentation/process
SeongJae Park [Sun, 17 Jan 2021 10:09:29 +0000 (11:09 +0100)]
Documentation/kokr/howto: Replace HTTP links with HTTPS ones: Documentation/process

Apply this commit to Korean:

    e7b4311ebcac ("Replace HTTP links with HTTPS ones: Documentation/process")

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Link: https://lore.kernel.org/r/20210117100931.9347-2-sj38.park@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: process/howto.rst: make sections on bug reporting match practice
Thorsten Leemhuis [Sat, 16 Jan 2021 14:35:42 +0000 (15:35 +0100)]
docs: process/howto.rst: make sections on bug reporting match practice

The file Documentation/process/howto.rst points to bugzilla.kernel.org
as the primary place to report kernel bugs to. For most of the kernel
that's the wrong place, as the MAINTAINERS file shows. Adjust those
sections to make them match current practice.

This change also removes a contradiction with the recently added text
Documentation/admin-guide/reporting-issues.rst, which is a reason for a
'this needs further discussion' warning note in there. The change is
thus a prerequisite to remove that warning, nevertheless it is left for
now to make sure people review the text's approach more carefully.

Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210116143542.69199-1-linux@leemhuis.info
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: mips: use doc references instead
Lukas Bulwahn [Wed, 13 Jan 2021 07:05:57 +0000 (08:05 +0100)]
doc/zh_CN: mips: use doc references instead

The Chinese mips translations refer to non-existing labels in the original
documentation. Hence, make htmldocs warns about those undefined labels on
all files in ./Documentation/translations/zh_CN/mips/.

Replace the references to non-existing labels with suitable doc references.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Fixes: 419b1d4ed1cb ("doc/zh_CN: add mips ingenic-tcu.rst translation")
Fixes: 72bc9d08868d ("doc/zh_CN: add mips features.rst translation")
Fixes: 7fd3954b0c52 ("doc/zh_CN: add mips booting.rst translation")
Fixes: b8e724fd7117 ("doc/zh_CN: add mips index.rst translation")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20210113070557.28792-1-lukas.bulwahn@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: adjust table markup in mips/ingenic-tcu.rst
Lukas Bulwahn [Wed, 13 Jan 2021 07:00:23 +0000 (08:00 +0100)]
doc/zh_CN: adjust table markup in mips/ingenic-tcu.rst

Commit 419b1d4ed1cb ("doc/zh_CN: add mips ingenic-tcu.rst translation")
introduces a warning with make htmldocs:

  ./Documentation/translations/zh_CN/mips/ingenic-tcu.rst:
    61: WARNING: Malformed table. Text in column margin in table line 6.

Adjust the table markup to address this warning.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Fixes: 419b1d4ed1cb ("doc/zh_CN: add mips ingenic-tcu.rst translation")
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20210113070023.25064-1-lukas.bulwahn@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: add mips ingenic-tcu.rst translation
Yanteng Si [Tue, 12 Jan 2021 11:52:59 +0000 (19:52 +0800)]
doc/zh_CN: add mips ingenic-tcu.rst translation

This patch translates Documentation/mips/ingenic-tcu.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210112115259.217944-4-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: add mips features.rst translation
Yanteng Si [Tue, 12 Jan 2021 11:52:58 +0000 (19:52 +0800)]
doc/zh_CN: add mips features.rst translation

This patch translates Documentation/mips/features.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210112115259.217944-3-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: add mips booting.rst translation
Yanteng Si [Tue, 12 Jan 2021 11:52:57 +0000 (19:52 +0800)]
doc/zh_CN: add mips booting.rst translation

This patch translates Documentation/mips/booting.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210112115259.217944-2-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodoc/zh_CN: add mips index.rst translation
Yanteng Si [Tue, 12 Jan 2021 11:52:56 +0000 (19:52 +0800)]
doc/zh_CN: add mips index.rst translation

This patch translates Documentation/mips/index.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://lore.kernel.org/r/20210112115259.217944-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agosamples/kprobes: Remove misleading comment
Marc Koderer [Mon, 28 Dec 2020 06:04:15 +0000 (07:04 +0100)]
samples/kprobes: Remove misleading comment

The example file supports many architectures not only x86 and PPC.

Signed-off-by: Marc Koderer <marc@koderer.com>
Cc: trivial@kernel.org
Link: https://lore.kernel.org/r/20201228060415.2194-1-marc@koderer.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: document dma device use for mcb
Johannes Thumshirn [Fri, 18 Dec 2020 15:35:25 +0000 (00:35 +0900)]
Documentation: document dma device use for mcb

Hannes reported a problem with setting up dma transfers on a mcb device.
The problem boiled down to the use of a wrong 'device' for the dma
functions.

Document how to setup dma transfers for a IP core on a mcb carrier.

Reported-by: Hannes Duerr <Hannes.Duerr@duagon.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/3bdc8f76b30c2b0e2a2bfab06c2e73797ddc9384.1608305690.git.johannes.thumshirn@wdc.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: Include ext4 documentation via filesystems/
Jonathan Neuschäfer [Fri, 1 Jan 2021 21:52:13 +0000 (22:52 +0100)]
docs: Include ext4 documentation via filesystems/

The documentation for other filesystems is already included via
filesystems/index.rst. Include ext4 in the same way and remove it
from the top-level table of contents.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20210101215215.1047826-1-j.neuschaefer@gmx.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation/dax: Update description of DAX policy changing
Hao Li [Wed, 6 Jan 2021 01:50:00 +0000 (09:50 +0800)]
Documentation/dax: Update description of DAX policy changing

After commit 77573fa310d9 ("fs: Kill DCACHE_DONTCACHE dentry even if
DCACHE_REFERENCED is set"), changes to DAX policy will take effect
as soon as all references to this file are gone.

Update the documentation accordingly.

Signed-off-by: Hao Li <lihao2018.fnst@cn.fujitsu.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20210106015000.5263-1-lihao2018.fnst@cn.fujitsu.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: Fix typos found in cgroup-v2.rst
Jiang Biao [Thu, 7 Jan 2021 14:11:18 +0000 (22:11 +0800)]
Documentation: Fix typos found in cgroup-v2.rst

Fix typos found in Documentation/admin-guide/cgroup-v2.rst.

Signed-off-by: Jiang Biao <benbjiang@tencent.com>
Link: https://lore.kernel.org/r/20210107141118.9530-1-benbjiang@tencent.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agodocs: filesystems: vfs: Correct the struct name
Liao Pingfang [Sun, 10 Jan 2021 07:59:59 +0000 (15:59 +0800)]
docs: filesystems: vfs: Correct the struct name

The struct name should be file_system_type instead of
file_system_operations.

Signed-off-by: Liao Pingfang <winndows@163.com>
Link: https://lore.kernel.org/r/1610265599-5101-1-git-send-email-winndows@163.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: Replace lkml.org links with lore
Joe Perches [Sun, 10 Jan 2021 20:41:44 +0000 (12:41 -0800)]
Documentation: Replace lkml.org links with lore

Replace the lkml.org links with lore to better use a single source
that's more likely to stay available long-term.

Done by bash script:

cvt_lkml_to_lore ()
{
    tmpfile=$(mktemp ./.cvt_links.XXXXXXX)

    header=$(echo $1 | sed 's@/lkml/@/lkml/headers/@')

    wget -qO - $header > $tmpfile
    if [[ $? == 0 ]] ; then
link=$(grep -i '^Message-Id:' $tmpfile | head -1 | \
   sed -r -e 's/^\s*Message-Id:\s*<\s*//' -e  's/\s*>\s*$//' -e 's@^@https://lore.kernel.org/r/@')
#    echo "testlink: $link"
if [ -n "$link" ] ; then
    wget -qO - $link > /dev/null
    if [[ $? == 0 ]] ; then
echo $link
    fi
fi
    fi

    rm -f $tmpfile
}

git grep -P -o "\bhttps?://(?:www.)?lkml.org/lkml[\/\w]+" $@ |
    while read line ; do
echo $line
file=$(echo $line | cut -f1 -d':')
link=$(echo $line | cut -f2- -d':')
newlink=$(cvt_lkml_to_lore $link)
if [[ -n "$newlink" ]] ; then
    sed -i -e "s#\b$link\b#$newlink#" $file
fi
    done

Link: https://lore.kernel.org/patchwork/patch/1265849/#1462688
Signed-off-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/r/77cdb7f32cfb087955bfc3600b86c40bed5d4104.camel@perches.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoDocumentation: kernel-hacking: change 'current()' to 'current'
Joe Pater [Mon, 11 Jan 2021 10:32:41 +0000 (10:32 +0000)]
Documentation: kernel-hacking: change 'current()' to 'current'

Change 'current()' heading to 'current' to reflect usage.

Signed-off-by: Joe Pater <02joepater06@gmail.com>
Link: https://lore.kernel.org/r/20210111103240.7445-1-02joepater06@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
3 years agoLinux 5.11-rc3
Linus Torvalds [Sun, 10 Jan 2021 22:34:50 +0000 (14:34 -0800)]
Linux 5.11-rc3

3 years agoMerge tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sun, 10 Jan 2021 21:24:55 +0000 (13:24 -0800)]
Merge tag 'kbuild-fixes-v5.11' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Search for <ncurses.h> in the default header path of HOSTCC

 - Tweak the option order to be kind to old BSD awk

 - Remove 'kvmconfig' and 'xenconfig' shorthands

 - Fix documentation

* tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  Documentation: kbuild: Fix section reference
  kconfig: remove 'kvmconfig' and 'xenconfig' shorthands
  lib/raid6: Let $(UNROLL) rules work with macOS userland
  kconfig: Support building mconf with vendor sysroot ncurses
  kconfig: config script: add a little user help
  MAINTAINERS: adjust GCC PLUGINS after gcc-plugin.sh removal

3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sun, 10 Jan 2021 21:17:21 +0000 (13:17 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is two driver fixes (megaraid_sas and hisi_sas).

  The megaraid one is a revert of a previous revert of a cpu hotplug fix
  which exposed a bug in the block layer which has been fixed in this
  merge window.

  The hisi_sas performance enhancement comes from switching to interrupt
  managed completion queues, which depended on the addition of
  devm_platform_get_irqs_affinity() which is now upstream via the irq
  tree in the last merge window"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: hisi_sas: Expose HW queues for v2 hw
  Revert "Revert "scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug""

3 years agoMerge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 10 Jan 2021 20:53:08 +0000 (12:53 -0800)]
Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Missing CRC32 selections (Arnd)

 - Fix for a merge window regression with bdev inode init (Christoph)

 - bcache fixes

 - rnbd fixes

 - NVMe pull request from Christoph:
    - fix a race in the nvme-tcp send code (Sagi Grimberg)
    - fix a list corruption in an nvme-rdma error path (Israel Rukshin)
    - avoid a possible double fetch in nvme-pci (Lalithambika Krishnakumar)
    - add the susystem NQN quirk for a Samsung driver (Gopal Tiwari)
    - fix two compiler warnings in nvme-fcloop (James Smart)
    - don't call sleeping functions from irq context in nvme-fc (James Smart)
    - remove an unused argument (Max Gurtovoy)
    - remove unused exports (Minwoo Im)

 - Use-after-free fix for partition iteration (Ming)

 - Missing blk-mq debugfs flag annotation (John)

 - Bdev freeze regression fix (Satya)

 - blk-iocost NULL pointer deref fix (Tejun)

* tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block: (26 commits)
  bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
  bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
  bcache: check unsupported feature sets for bcache register
  bcache: fix typo from SUUP to SUPP in features.h
  bcache: set pdev_set_uuid before scond loop iteration
  blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
  block/rnbd-clt: avoid module unload race with close confirmation
  block/rnbd: Adding name to the Contributors List
  block/rnbd-clt: Fix sg table use after free
  block/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close
  block/rnbd: Select SG_POOL for RNBD_CLIENT
  block: pre-initialize struct block_device in bdev_alloc_inode
  fs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb
  nvme: remove the unused status argument from nvme_trace_bio_complete
  nvmet-rdma: Fix list_del corruption on queue establishment failure
  nvme: unexport functions with no external caller
  nvme: avoid possible double fetch in handling CQE
  nvme-tcp: Fix possible race of io_work and direct send
  nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
  nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
  ...

3 years agoMerge tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 10 Jan 2021 20:39:38 +0000 (12:39 -0800)]
Merge tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A bit larger than I had hoped at this point, but it's all changes that
  will be directed towards stable anyway. In detail:

   - Fix a merge window regression on error return (Matthew)

   - Remove useless variable declaration/assignment (Ye Bin)

   - IOPOLL fixes (Pavel)

   - Exit and cancelation fixes (Pavel)

   - fasync lockdep complaint fix (Pavel)

   - Ensure SQPOLL is synchronized with creator life time (Pavel)"

* tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block:
  io_uring: stop SQPOLL submit on creator's death
  io_uring: add warn_once for io_uring_flush()
  io_uring: inline io_uring_attempt_task_drop()
  io_uring: io_rw_reissue lockdep annotations
  io_uring: synchronise ev_posted() with waitqueues
  io_uring: dont kill fasync under completion_lock
  io_uring: trigger eventfd for IOPOLL
  io_uring: Fix return value from alloc_fixed_file_ref_node
  io_uring: Delete useless variable ‘id’ in io_prep_async_work
  io_uring: cancel more aggressively in exit_work
  io_uring: drop file refs after task cancel
  io_uring: patch up IOPOLL overflow_flush sync
  io_uring: synchronise IOPOLL on task_submit fail

3 years agoMerge tag 'usb-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 10 Jan 2021 20:33:19 +0000 (12:33 -0800)]
Merge tag 'usb-5.11-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of small USB driver fixes for 5.11-rc3.

  Include in here are:

   - USB gadget driver fixes for reported issues

   - new usb-serial driver ids

   - dma from stack bugfixes

   - typec bugfixes

   - dwc3 bugfixes

   - xhci driver bugfixes

   - other small misc usb driver bugfixes

  All of these have been in linux-next with no reported issues"

* tag 'usb-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
  usb: dwc3: gadget: Clear wait flag on dequeue
  usb: typec: Send uevent for num_altmodes update
  usb: typec: Fix copy paste error for NVIDIA alt-mode description
  usb: gadget: enable super speed plus
  kcov, usb: hide in_serving_softirq checks in __usb_hcd_giveback_urb
  usb: uas: Add PNY USB Portable SSD to unusual_uas
  usb: gadget: configfs: Preserve function ordering after bind failure
  usb: gadget: select CONFIG_CRC32
  usb: gadget: core: change the comment for usb_gadget_connect
  usb: gadget: configfs: Fix use-after-free issue with udc_name
  usb: dwc3: gadget: Restart DWC3 gadget when enabling pullup
  usb: usbip: vhci_hcd: protect shift size
  USB: usblp: fix DMA to stack
  USB: serial: iuu_phoenix: fix DMA from stack
  USB: serial: option: add LongSung M5710 module support
  USB: serial: option: add Quectel EM160R-GL
  USB: Gadget: dummy-hcd: Fix shift-out-of-bounds bug
  usb: gadget: f_uac2: reset wMaxPacketSize
  usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression
  usb: dwc3: ulpi: Replace CPU-based busyloop with Protocol-based one
  ...

3 years agoMerge tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 10 Jan 2021 20:28:07 +0000 (12:28 -0800)]
Merge tag 'staging-5.11-rc3' of git://git./linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are some small staging driver fixes for 5.11-rc3. Nothing major,
  just resolving some reported issues:

   - cleanup some remaining mentions of the ION drivers that were
     removed in 5.11-rc1

   - comedi driver bugfix

   - two error path memory leak fixes

  All have been in linux-next for a while with no reported issues"

* tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: ION: remove some references to CONFIG_ION
  staging: mt7621-dma: Fix a resource leak in an error handling path
  Staging: comedi: Return -EFAULT if copy_to_user() fails
  staging: spmi: hisi-spmi-controller: Fix some error handling paths

3 years agoMerge tag 'char-misc-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 10 Jan 2021 20:24:33 +0000 (12:24 -0800)]
Merge tag 'char-misc-5.11-rc3' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small char and misc driver fixes for 5.11-rc3.

  The majority here are fixes for the habanalabs drivers, but also in
  here are:

   - crypto driver fix

   - pvpanic driver fix

   - updated font file

   - interconnect driver fixes

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
  Fonts: font_ter16x32: Update font with new upstream Terminus release
  misc: pvpanic: Check devm_ioport_map() for NULL
  speakup: Add github repository URL and bug tracker
  MAINTAINERS: Update Georgi's email address
  crypto: asym_tpm: correct zero out potential secrets
  habanalabs: Fix memleak in hl_device_reset
  interconnect: imx8mq: Use icc_sync_state
  interconnect: imx: Remove a useless test
  interconnect: imx: Add a missing of_node_put after of_device_is_available
  interconnect: qcom: fix rpmh link failures
  habanalabs: fix order of status check
  habanalabs: register to pci shutdown callback
  habanalabs: add validation cs counter, fix misplaced counters
  habanalabs/gaudi: retry loading TPC f/w on -EINTR
  habanalabs: adjust pci controller init to new firmware
  habanalabs: update comment in hl_boot_if.h
  habanalabs/gaudi: enhance reset message
  habanalabs: full FW hard reset support
  habanalabs/gaudi: disable CGM at HW initialization
  habanalabs: Revise comment to align with mirror list name
  ...

3 years agoDocumentation: kbuild: Fix section reference
Viresh Kumar [Thu, 7 Jan 2021 11:42:08 +0000 (17:12 +0530)]
Documentation: kbuild: Fix section reference

Section 3.11 was incorrectly called 3.9, fix it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agoMerge tag 'arc-5.11-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupt...
Linus Torvalds [Sun, 10 Jan 2021 20:00:26 +0000 (12:00 -0800)]
Merge tag 'arc-5.11-rc3-fixes' of git://git./linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - Address the 2nd boot failure due to snafu in signal handling code
   (first was generic console ttynull issue)

 - misc other fixes

* tag 'arc-5.11-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [hsdk]: Enable FPU_SAVE_RESTORE
  ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling
  include/soc: remove headers for EZChip NPS
  arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC

3 years agoMerge tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 10 Jan 2021 19:34:33 +0000 (11:34 -0800)]
Merge tag 'powerpc-5.11-3' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - A fix for machine check handling with VMAP stack on 32-bit.

 - A clang build fix.

Thanks to Christophe Leroy and Nathan Chancellor.

* tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Handle .text.{hot,unlikely}.* in linker script
  powerpc/32s: Fix RTAS machine check with VMAP stack

3 years agoMerge tag 'x86_urgent_for_v5.11_rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Jan 2021 19:31:17 +0000 (11:31 -0800)]
Merge tag 'x86_urgent_for_v5.11_rc3' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:
 "As expected, fixes started trickling in after the holidays so here is
  the accumulated pile of x86 fixes for 5.11:

   - A fix for fanotify_mark() missing the conversion of x86_32 native
     syscalls which take 64-bit arguments to the compat handlers due to
     former having a general compat handler. (Brian Gerst)

   - Add a forgotten pmd page destructor call to pud_free_pmd_page()
     where a pmd page is freed. (Dan Williams)

   - Make IN/OUT insns with an u8 immediate port operand handling for
     SEV-ES guests more precise by using only the single port byte and
     not the whole s32 value of the insn decoder. (Peter Gonda)

   - Correct a straddling end range check before returning the proper
     MTRR type, when the end address is the same as top of memory.
     (Ying-Tsun Huang)

   - Change PQR_ASSOC MSR update scheme when moving a task to a resctrl
     resource group to avoid significant performance overhead with some
     resctrl workloads. (Fenghua Yu)

   - Avoid the actual task move overhead when the task is already in the
     resource group. (Fenghua Yu)"

* tag 'x86_urgent_for_v5.11_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/resctrl: Don't move a task to the same resource group
  x86/resctrl: Use an IPI instead of task_work_add() to update PQR_ASSOC MSR
  x86/mtrr: Correct the range check before performing MTRR type lookups
  x86/sev-es: Fix SEV-ES OUT/IN immediate opcode vc handling
  x86/mm: Fix leak of pmd ptlock
  fanotify: Fix sys_fanotify_mark() on native x86-32

3 years agoMerge tag 'hwmon-for-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 9 Jan 2021 19:22:30 +0000 (11:22 -0800)]
Merge tag 'hwmon-for-v5.11-rc3' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Fix possible KASAN issue in amd_energy driver

 - Avoid configuration problem in pwm-fan driver

 - Fix kernel-doc warning in sbtsi_temp documentation

* tag 'hwmon-for-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (amd_energy) fix allocation of hwmon_channel_info config
  hwmon: (pwm-fan) Ensure that calculation doesn't discard big period values
  hwmon: (sbtsi_temp) Fix Documenation kernel-doc warning

3 years agoMerge tag 'dmaengine-fix-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul...
Linus Torvalds [Sat, 9 Jan 2021 19:18:02 +0000 (11:18 -0800)]
Merge tag 'dmaengine-fix-5.11' of git://git./linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A bunch of dmaengine driver fixes for:

   - coverity discovered issues for xilinx driver

   - qcom, gpi driver fix for undefined bhaviour and one off cleanup

   - update Peter's email for TI DMA drivers

   - one-off for idxd driver

   - resource leak fix for mediatek and milbeaut drivers"

* tag 'dmaengine-fix-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: stm32-mdma: fix STM32_MDMA_VERY_HIGH_PRIORITY value
  dmaengine: xilinx_dma: fix mixed_enum_type coverity warning
  dmaengine: xilinx_dma: fix incompatible param warning in _child_probe()
  dmaengine: xilinx_dma: check dma_async_device_register return value
  dmaengine: qcom: fix gpi undefined behavior
  dt-bindings: dma: ti: Update maintainer and author information
  MAINTAINERS: Add entry for Texas Instruments DMA drivers
  qcom: bam_dma: Delete useless kfree code
  dmaengine: dw-edma: Fix use after free in dw_edma_alloc_chunk()
  dmaengine: milbeaut-xdmac: Fix a resource leak in the error handling path of the probe function
  dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function
  dmaengine: qcom: gpi: Fixes a format mismatch
  dmaengine: idxd: off by one in cleanup code
  dmaengine: ti: k3-udma: Fix pktdma rchan TPL level setup

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 9 Jan 2021 19:04:48 +0000 (11:04 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Three driver bugfixes for I2C. Buisness as usual"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mediatek: Fix apdma and i2c hand-shake timeout
  i2c: i801: Fix the i2c-mux gpiod_lookup_table not being properly terminated
  i2c: sprd: use a specific timeout to avoid system hang up issue

3 years agomaintainers: update my email address
Darrick J. Wong [Sat, 9 Jan 2021 06:46:02 +0000 (22:46 -0800)]
maintainers: update my email address

Change my email contact ahead of a likely painful eleven-month migration
to a certain cobalt enteprisey groupware cloud product that will totally
break my workflow.  Some day I may get used to having to email being
sequestered behind both claret and cerulean oath2+sms 2fa layers, but
for now I'll stick with keying in one password to receive an email vs.
the required four.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoio_uring: stop SQPOLL submit on creator's death
Pavel Begunkov [Fri, 8 Jan 2021 20:57:25 +0000 (20:57 +0000)]
io_uring: stop SQPOLL submit on creator's death

When the creator of SQPOLL io_uring dies (i.e. sqo_task), we don't want
its internals like ->files and ->mm to be poked by the SQPOLL task, it
have never been nice and recently got racy. That can happen when the
owner undergoes destruction and SQPOLL tasks tries to submit new
requests in parallel, and so calls io_sq_thread_acquire*().

That patch halts SQPOLL submissions when sqo_task dies by introducing
sqo_dead flag. Once set, the SQPOLL task must not do any submission,
which is synchronised by uring_lock as well as the new flag.

The tricky part is to make sure that disabling always happens, that
means either the ring is discovered by creator's do_exit() -> cancel,
or if the final close() happens before it's done by the creator. The
last is guaranteed by the fact that for SQPOLL the creator task and only
it holds exactly one file note, so either it pins up to do_exit() or
removed by the creator on the final put in flush. (see comments in
uring_flush() around file->f_count == 2).

One more place that can trigger io_sq_thread_acquire_*() is
__io_req_task_submit(). Shoot off requests on sqo_dead there, even
though actually we don't need to. That's because cancellation of
sqo_task should wait for the request before going any further.

note 1: io_disable_sqo_submit() does io_ring_set_wakeup_flag() so the
caller would enter the ring to get an error, but it still doesn't
guarantee that the flag won't be cleared.

note 2: if final __userspace__ close happens not from the creator
task, the file note will pin the ring until the task dies.

Fixed: b1b6b5a30dce8 ("kernel/io_uring: cancel io_uring before task works")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoio_uring: add warn_once for io_uring_flush()
Pavel Begunkov [Fri, 8 Jan 2021 20:57:24 +0000 (20:57 +0000)]
io_uring: add warn_once for io_uring_flush()

files_cancel() should cancel all relevant requests and drop file notes,
so we should never have file notes after that, including on-exit fput
and flush. Add a WARN_ONCE to be sure.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoio_uring: inline io_uring_attempt_task_drop()
Pavel Begunkov [Fri, 8 Jan 2021 20:57:23 +0000 (20:57 +0000)]
io_uring: inline io_uring_attempt_task_drop()

A simple preparation change inlining io_uring_attempt_task_drop() into
io_uring_flush().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoio_uring: io_rw_reissue lockdep annotations
Pavel Begunkov [Fri, 8 Jan 2021 20:57:22 +0000 (20:57 +0000)]
io_uring: io_rw_reissue lockdep annotations

We expect io_rw_reissue() to take place only during submission with
uring_lock held. Add a lockdep annotation to check that invariant.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
Coly Li [Mon, 4 Jan 2021 07:41:22 +0000 (15:41 +0800)]
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET

If BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET is set in incompat feature
set, it means the cache device is created with obsoleted layout with
obso_bucket_site_hi. Now bcache does not support this feature bit, a new
BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE incompat feature bit is added
for a better layout to support large bucket size.

For the legacy compatibility purpose, if a cache device created with
obsoleted BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit, all bcache
devices attached to this cache set should be set to read-only. Then the
dirty data can be written back to backing device before re-create the
cache device with BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE feature bit
by the latest bcache-tools.

This patch checks BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit
when running a cache set and attach a bcache device to the cache set. If
this bit is set,
- When run a cache set, print an error kernel message to indicate all
  following attached bcache device will be read-only.
- When attach a bcache device, print an error kernel message to indicate
  the attached bcache device will be read-only, and ask users to update
  to latest bcache-tools.

Such change is only for cache device whose bucket size >= 32MB, this is
for the zoned SSD and almost nobody uses such large bucket size at this
moment. If you don't explicit set a large bucket size for a zoned SSD,
such change is totally transparent to your bcache device.

Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
Coly Li [Mon, 4 Jan 2021 07:41:21 +0000 (15:41 +0800)]
bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket

When large bucket feature was added, BCH_FEATURE_INCOMPAT_LARGE_BUCKET
was introduced into the incompat feature set. It used bucket_size_hi
(which was added at the tail of struct cache_sb_disk) to extend current
16bit bucket size to 32bit with existing bucket_size in struct
cache_sb_disk.

This is not a good idea, there are two obvious problems,
- Bucket size is always value power of 2, if store log2(bucket size) in
  existing bucket_size of struct cache_sb_disk, it is unnecessary to add
  bucket_size_hi.
- Macro csum_set() assumes d[SB_JOURNAL_BUCKETS] is the last member in
  struct cache_sb_disk, bucket_size_hi was added after d[] which makes
  csum_set calculate an unexpected super block checksum.

To fix the above problems, this patch introduces a new incompat feature
bit BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE, when this bit is set, it
means bucket_size in struct cache_sb_disk stores the order of power-of-2
bucket size value. When user specifies a bucket size larger than 32768
sectors, BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE will be set to
incompat feature set, and bucket_size stores log2(bucket size) more
than store the real bucket size value.

The obsoleted BCH_FEATURE_INCOMPAT_LARGE_BUCKET won't be used anymore,
it is renamed to BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET and still only
recognized by kernel driver for legacy compatible purpose. The previous
bucket_size_hi is renmaed to obso_bucket_size_hi in struct cache_sb_disk
and not used in bcache-tools anymore.

For cache device created with BCH_FEATURE_INCOMPAT_LARGE_BUCKET feature,
bcache-tools and kernel driver still recognize the feature string and
display it as "obso_large_bucket".

With this change, the unnecessary extra space extend of bcache on-disk
super block can be avoided, and csum_set() may generate expected check
sum as well.

Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: check unsupported feature sets for bcache register
Coly Li [Mon, 4 Jan 2021 07:41:20 +0000 (15:41 +0800)]
bcache: check unsupported feature sets for bcache register

This patch adds the check for features which is incompatible for
current supported feature sets.

Now if the bcache device created by bcache-tools has features that
current kernel doesn't support, read_super() will fail with error
messoage. E.g. if an unsupported incompatible feature detected,
bcache register will fail with dmesg "bcache: register_bcache() error :
Unsupported incompatible feature found".

Fixes: d721a43ff69c ("bcache: increase super block version for cache device and backing device")
Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: fix typo from SUUP to SUPP in features.h
Coly Li [Mon, 4 Jan 2021 07:41:19 +0000 (15:41 +0800)]
bcache: fix typo from SUUP to SUPP in features.h

This patch fixes the following typos,
from BCH_FEATURE_COMPAT_SUUP to BCH_FEATURE_COMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_INCOMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_RO_COMPAT_SUPP

Fixes: d721a43ff69c ("bcache: increase super block version for cache device and backing device")
Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: set pdev_set_uuid before scond loop iteration
Yi Li [Mon, 4 Jan 2021 07:41:18 +0000 (15:41 +0800)]
bcache: set pdev_set_uuid before scond loop iteration

There is no need to reassign pdev_set_uuid in the second loop iteration,
so move it to the place before second loop.

Signed-off-by: Yi Li <yili@winhong.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoMerge tag 'zonefs-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal...
Linus Torvalds [Sat, 9 Jan 2021 02:04:43 +0000 (18:04 -0800)]
Merge tag 'zonefs-5.11-rc3' of git://git./linux/kernel/git/dlemoal/zonefs

Pull zonefs fix from Damien Le Moal:
 "A single patch from Arnd to fix a missing dependency in zonefs
  Kconfig"

* tag 'zonefs-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
  zonefs: select CONFIG_CRC32

3 years agoMerge tag 'linux-kselftest-kunit-fixes-5.11-rc3' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 9 Jan 2021 01:18:50 +0000 (17:18 -0800)]
Merge tag 'linux-kselftest-kunit-fixes-5.11-rc3' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kunit fixes from Shuah Khan:
 "One fix to force the use of the 'tty' console for UML.

  Given that kunit tool requires the console output, explicitly stating
  the dependency makes sense than relying on it being the default"

* tag 'linux-kselftest-kunit-fixes-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: tool: Force the use of the 'tty' console for UML

3 years agoMerge tag 'linux-kselftest-next-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Sat, 9 Jan 2021 01:13:52 +0000 (17:13 -0800)]
Merge tag 'linux-kselftest-next-5.11-rc3' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Two minor fixes to vDSO test changes in this merge window"

* tag 'linux-kselftest-next-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/vDSO: fix -Wformat warning in vdso_test_correctness
  selftests/vDSO: add additional binaries to .gitignore

3 years agoMerge tag 'docs-5.11-3' of git://git.lwn.net/linux
Linus Torvalds [Sat, 9 Jan 2021 01:01:28 +0000 (17:01 -0800)]
Merge tag 'docs-5.11-3' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A handful of relatively small documentation fixes"

* tag 'docs-5.11-3' of git://git.lwn.net/linux:
  docs: admin-guide: bootconfig: Fix feils to fails
  Documentation/admin-guide: kernel-parameters: hyphenate comma-separated
  docs: binfmt-misc: Fix .rst formatting
  docs: remove mention of ENABLE_MUST_CHECK
  atomic: remove further references to atomic_ops
  Documentation: doc-guide: fixes to sphinx.rst
  docs/mm: concepts.rst: Correct the threshold to low watermark
  Documentation: admin: early_param()s are also listed in kernel-parameters
  docs: Fix reST markup when linking to sections

3 years agoMerge tag 'devprop-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 8 Jan 2021 23:45:47 +0000 (15:45 -0800)]
Merge tag 'devprop-5.11-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull device properties framework fixes from Rafael Wysocki:
 "Revert a problematic commit that went in during the 5.10 cycle and
  improve the kerneldoc description of the function affected by it (both
  changes from Bard Liao)"

* tag 'devprop-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  device property: add description of fwnode cases
  Revert "device property: Keep secondary firmware node secondary by type"

3 years agoMerge tag 'acpi-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 8 Jan 2021 23:42:56 +0000 (15:42 -0800)]
Merge tag 'acpi-5.11-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These address two build issues and drop confusing text from a couple
  of Kconfig entries.

  Specifics:

   - Drop two local variables that are never read and the code updating
     their values from the x86 suspend-to-idle code (Rafael Wysocki)

   - Add empty stub of an ACPI helper function to avoid build issues
     when CONFIG_ACPI is not set (Shawn Guo)

   - Remove confusing text regarding modules from Kconfig entries that
     correspond to non-modular code (Peter Robinson)"

* tag 'acpi-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Update Kconfig help text for items that are no longer modular
  ACPI: scan: add stub acpi_create_platform_device() for !CONFIG_ACPI
  ACPI: PM: s2idle: Drop unused local variables and related code

3 years agoMerge tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 8 Jan 2021 23:39:25 +0000 (15:39 -0800)]
Merge tag 'pm-5.11-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These address two issues in the intel_pstate driver and one in the
  powernow-k8 cpufreq driver.

  Specifics:

   - Make the powernow-k8 cpufreq driver avoid calling
     cpufreq_cpu_get(), which theoretically may return NULL, to get a
     policy pointer that is known to it already (Colin Ian King)

   - Drop two functions that are not used any more from the intel_pstate
     driver (Lukas Bulwahn)

   - Make intel_pstate check the HWP capabilities to get the maximum
     available P-state in the passive mode to avoid using a stale value
     of it in case of out-of-band updates (Rafael Wysocki)"

* tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: remove obsolete functions
  cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()
  cpufreq: intel_pstate: Use HWP capabilities in intel_cpufreq_adjust_perf()

3 years agoMerge tag 'drm-fixes-2021-01-08' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 8 Jan 2021 23:12:08 +0000 (15:12 -0800)]
Merge tag 'drm-fixes-2021-01-08' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Looks like people are back from the break, usual small pile of fixes
  all over. Next week Dave should be back.

  The only thing pending I'm aware of is a "this shouldn't have become
  uapi" reverts for amdgpu, but they're already on the list and not that
  important really so can wait another week.

  Summary:

   - fix for ttm list corruption in radeon, reported by a few people

   - fixes for amdgpu, i915, msm

   - dma-buf use-after free fix"

* tag 'drm-fixes-2021-01-08' of git://anongit.freedesktop.org/drm/drm: (29 commits)
  drm/msm: Only enable A6xx LLCC code on A6xx
  drm/msm: Add modparam to allow vram carveout
  drm/msm: Call msm_init_vram before binding the gpu
  drm/msm/dp: postpone irq_hpd event during connection pending state
  drm/ttm: unexport ttm_pool_init/fini
  drm/radeon: stop re-init the TTM page pool
  dmabuf: fix use-after-free of dmabuf's file->f_inode
  Revert "drm/amd/display: Fix memory leaks in S3 resume"
  drm/amdgpu/display: drop DCN support for aarch64
  drm/amdgpu: enable ras eeprom support for sienna cichlid
  drm/amdgpu: fix no bad_pages issue after umc ue injection
  drm/amdgpu: fix potential memory leak during navi12 deinitialization
  drm/amd/display: Fix unused variable warning
  drm/amd/pm: improve the fine grain tuning function for RV/RV2/PCO
  drm/amd/pm: fix the failure when change power profile for renoir
  drm/amdgpu: fix a GPU hang issue when remove device
  drm/amdgpu: fix a memory protection fault when remove amdgpu device
  drm/amdgpu: switched to cached noretry setting for vangogh
  drm/amd/display: fix sysfs amdgpu_current_backlight_pwm NULL pointer issue
  drm/amd/pm: updated PM to I2C controller port on sienna cichlid
  ...

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 8 Jan 2021 23:06:02 +0000 (15:06 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "x86:
   - Fixes for the new scalable MMU
   - Fixes for migration of nested hypervisors on AMD
   - Fix for clang integrated assembler
   - Fix for left shift by 64 (UBSAN)
   - Small cleanups
   - Straggler SEV-ES patch

  ARM:
   - VM init cleanups
   - PSCI relay cleanups
   - Kill CONFIG_KVM_ARM_PMU
   - Fixup __init annotations
   - Fixup reg_to_encoding()
   - Fix spurious PMCR_EL0 access

  Misc:
   - selftests cleanups"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (38 commits)
  KVM: x86: __kvm_vcpu_halt can be static
  KVM: SVM: Add support for booting APs in an SEV-ES guest
  KVM: nSVM: cancel KVM_REQ_GET_NESTED_STATE_PAGES on nested vmexit
  KVM: nSVM: mark vmcb as dirty when forcingly leaving the guest mode
  KVM: nSVM: correctly restore nested_run_pending on migration
  KVM: x86/mmu: Clarify TDP MMU page list invariants
  KVM: x86/mmu: Ensure TDP MMU roots are freed after yield
  kvm: check tlbs_dirty directly
  KVM: x86: change in pv_eoi_get_pending() to make code more readable
  MAINTAINERS: Really update email address for Sean Christopherson
  KVM: x86: fix shift out of bounds reported by UBSAN
  KVM: selftests: Implement perf_test_util more conventionally
  KVM: selftests: Use vm_create_with_vcpus in create_vm
  KVM: selftests: Factor out guest mode code
  KVM/SVM: Remove leftover __svm_vcpu_run prototype from svm.c
  KVM: SVM: Add register operand to vmsave call in sev_es_vcpu_load
  KVM: x86/mmu: Optimize not-present/MMIO SPTE check in get_mmio_spte()
  KVM: x86/mmu: Use raw level to index into MMIO walks' sptes array
  KVM: x86/mmu: Get root level from walkers when retrieving MMIO SPTE
  KVM: x86/mmu: Use -1 to flag an undefined spte in get_mmio_spte()
  ...

3 years agoMerge tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 8 Jan 2021 22:55:41 +0000 (14:55 -0800)]
Merge tag 'iommu-fixes' of git://git./linux/kernel/git/arm64/linux

Pull iommu fixes from Will Deacon:
 "This is mainly all Intel VT-D stuff, but there are some fixes for AMD
  and ARM as well.

  We've also got the revert I promised during the merge window, which
  removes a temporary hack to accomodate i915 while we transitioned the
  Intel IOMMU driver over to the common DMA-IOMMU API.

  Finally, there are still a couple of other VT-D fixes floating around,
  so I expect to send you another batch of fixes next week.

  Summary:

   - Fix VT-D TLB invalidation for subdevices

   - Fix VT-D use-after-free on subdevice detach

   - Fix VT-D locking so that IRQs are disabled during SVA bind/unbind

   - Fix VT-D address alignment when flushing IOTLB

   - Fix memory leak in VT-D IRQ remapping failure path

   - Revert temporary i915 sglist hack now that it is no longer required

   - Fix sporadic boot failure with Arm SMMU on Qualcomm SM8150

   - Fix NULL dereference in AMD IRQ remapping code with remapping disabled

   - Fix accidental enabling of irqs on AMD resume-from-suspend path

   - Fix some typos in comments"

* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  iommu/vt-d: Fix ineffective devTLB invalidation for subdevices
  iommu/vt-d: Fix general protection fault in aux_detach_device()
  iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev
  iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
  iommu/vt-d: Fix lockdep splat in sva bind()/unbind()
  Revert "iommu: Add quirk for Intel graphic devices in map_sg"
  iommu/vt-d: Fix misuse of ALIGN in qi_flush_piotlb()
  iommu/amd: Stop irq_remapping_select() matching when remapping is disabled
  iommu/amd: Set iommu->int_enabled consistently when interrupts are set up
  iommu/intel: Fix memleak in intel_irq_remapping_alloc
  iommu/iova: fix 'domain' typos

3 years agoMerge tag 'arm-fixes-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Linus Torvalds [Fri, 8 Jan 2021 22:13:54 +0000 (14:13 -0800)]
Merge tag 'arm-fixes-5.11-1' of git://git./linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "These are a small number of bug fixes that all came in before or
  during the merge window, most for the omap platform:

   - One boot regression fix for Nokia N9 (OMAP3).

   - Two small defconfig changes for omap2, to reflect changes in
     drivers

   - Warning fixes for DT issues on omap2, picoxcell and bitmap SoCs.

     The picoxcell platform will be removed in v5.12, but fixing it
     first makes it easier to backport to the fix to stable kernels and
     get a clean build with new dtc versions"

* tag 'arm-fixes-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: picoxcell: fix missing interrupt-parent properties
  ARM: dts: ux500/golden: Set display max brightness
  arm64: dts: bitmain: Use generic "ngpios" rather than "snps,nr-gpios"
  ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875
  ARM: omap2plus_defconfig: enable SPI GPIO
  ARM: OMAP2+: omap_device: fix idling of devices during probe
  ARM: dts: OMAP3: disable AES on N950/N9
  ARM: omap2plus_defconfig: drop unused POWER_AVS option