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Fix race condition in generic_serial_bus (I2C) and GPIO
Operation Region handling in ACPICA and reduce some related
code duplication (Hans de Goede).
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Merge tag 'acpi-5.12-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"Fix race condition in generic_serial_bus (I2C) and GPIO Operation
Region handling in ACPICA and reduce some related code duplication
(Hans de Goede)"
* tag 'acpi-5.12-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPICA: Remove some code duplication from acpi_ev_address_space_dispatch
ACPICA: Fix race in generic_serial_bus (I2C) and GPIO op_region parameter handling
- Address cpufreq regression introduced in 5.11 that causes
CPU frequency reporting to be distorted on systems with CPPC
that use acpi-cpufreq as the scaling driver (Rafael Wysocki).
- Fix regression introduced during the 5.10 development cycle
related to CPU hotplug and policy recreation in the
qcom-cpufreq-hw driver (Shawn Guo).
- Fix recent regression in the operating performance points (OPP)
framework that may cause frequency updates to be skipped by
mistake in some cases (Jonathan Marek).
- Simplify schedutil governor code and remove a misleading comment
from it (Yue Hu).
- Fix kerneldoc comment typo in the cpufreq core (Yue Hu).
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Merge tag 'pm-5.12-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are fixes and cleanups on top of the power management material
for 5.12-rc1 merged previously.
Specifics:
- Address cpufreq regression introduced in 5.11 that causes CPU
frequency reporting to be distorted on systems with CPPC that use
acpi-cpufreq as the scaling driver (Rafael Wysocki).
- Fix regression introduced during the 5.10 development cycle related
to CPU hotplug and policy recreation in the qcom-cpufreq-hw driver
(Shawn Guo).
- Fix recent regression in the operating performance points (OPP)
framework that may cause frequency updates to be skipped by mistake
in some cases (Jonathan Marek).
- Simplify schedutil governor code and remove a misleading comment
from it (Yue Hu).
- Fix kerneldoc comment typo in the cpufreq core (Yue Hu)"
* tag 'pm-5.12-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Fix typo in kerneldoc comment
cpufreq: schedutil: Remove update_lock comment from struct sugov_policy definition
cpufreq: schedutil: Remove needless sg_policy parameter from ignore_dl_rate_limit()
cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known
cpufreq: qcom-hw: drop devm_xxx() calls from init/exit hooks
opp: Don't skip freq update for different frequency
Pull input updates from Dmitry Torokhov:
"Mostly existing driver fixes plus a new driver for game controllers
directly connected to Nintendo 64, and an enhancement for keyboards
driven by Chrome OS EC to communicate layout of the top row to
userspace"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (47 commits)
Input: st1232 - fix NORMAL vs. IDLE state handling
Input: aiptek - convert sysfs sprintf/snprintf family to sysfs_emit
Input: alps - fix spelling of "positive"
ARM: dts: cros-ec-keyboard: Use keymap macros
dt-bindings: input: Fix the keymap for LOCK key
dt-bindings: input: Create macros for cros-ec keymap
Input: cros-ec-keyb - expose function row physical map to userspace
dt-bindings: input: cros-ec-keyb: Add a new property describing top row
Input: applespi - fix occasional crc errors under load.
Input: applespi - don't wait for responses to commands indefinitely.
Input: st1232 - add IDLE state as ready condition
Input: zinitix - fix return type of zinitix_init_touch()
Input: i8042 - add ASUS Zenbook Flip to noselftest list
Input: add missing dependencies on CONFIG_HAS_IOMEM
Input: joydev - prevent potential read overflow in ioctl
Input: elo - fix an error code in elo_connect()
Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
Input: sur40 - fix an error code in sur40_probe()
Input: elants_i2c - detect enum overflow
Input: zinitix - remove unneeded semicolon
...
Pull HID updates from Jiri Kosina:
- support for "Unified Battery" feature on Logitech devices from Filipe
Laíns
- power management improvements for intel-ish driver from Zhang Lixu
- support for Goodix devices from Douglas Anderson
- improved handling of generic HID keyboard in order to make it easier
for userspace to figure out the details of the device, from Dmitry
Torokhov
- Playstation DualSense support from Roderick Colenbrander
- other assorted small fixes and device ID additions.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (49 commits)
HID: playstation: add DualSense player LED support.
HID: playstation: add microphone mute support for DualSense.
HID: playstation: add initial DualSense lightbar support.
HID: wacom: Ignore attempts to overwrite the touch_max value from HID
HID: playstation: fix array size comparison (off-by-one)
HID: playstation: fix unused variable in ps_battery_get_property.
HID: playstation: report DualSense hardware and firmware version.
HID: playstation: add DualSense classic rumble support.
HID: playstation: add DualSense Bluetooth support.
HID: playstation: track devices in list.
HID: playstation: add DualSense accelerometer and gyroscope support.
HID: playstation: add DualSense touchpad support.
HID: playstation: add DualSense battery support.
HID: playstation: use DualSense MAC address as unique identifier.
HID: playstation: initial DualSense USB support.
HID: ite: Enable QUIRK_TOUCHPAD_ON_OFF_REPORT on Acer Aspire Switch 10E
HID: Ignore battery for Elan touchscreen on HP Spectre X360 15-df0xxx
HID: logitech-dj: add support for the new lightspeed connection iteration
HID: intel-ish-hid: ipc: Add Tiger Lake H PCI device ID
HID: logitech-dj: add support for keyboard events in eQUAD step 4 Gaming
...
Commit 0da6bcd9fcc0 ("scripts: dtc: Build fdtoverlay tool") enabled
building fdtoverlay, but failed to add it to .gitignore.
Also add a note to keep hostprogs in sync with .gitignore.
Fixes: 0da6bcd9fcc0 ("scripts: dtc: Build fdtoverlay tool")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
* Log space and revoke accounting rework to fix some failed asserts.
* Local resource group glock sharing for better local performance.
* Add support for version 1802 filesystems: trusted xattr support and
'-o rgrplvb' mounts by default.
* Actually synchronize on the inode glock's FREEING bit during withdraw
("gfs2: fix glock confusion in function signal_our_withdraw").
* Fix parallel recovery of multiple journals ("gfs2: keep bios separate
for each journal").
* Various other bug fixes.
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Merge tag 'gfs2-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Log space and revoke accounting rework to fix some failed asserts.
- Local resource group glock sharing for better local performance.
- Add support for version 1802 filesystems: trusted xattr support and
'-o rgrplvb' mounts by default.
- Actually synchronize on the inode glock's FREEING bit during withdraw
("gfs2: fix glock confusion in function signal_our_withdraw").
- Fix parallel recovery of multiple journals ("gfs2: keep bios separate
for each journal").
- Various other bug fixes.
* tag 'gfs2-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (49 commits)
gfs2: Don't get stuck with I/O plugged in gfs2_ail1_flush
gfs2: Per-revoke accounting in transactions
gfs2: Rework the log space allocation logic
gfs2: Minor calc_reserved cleanup
gfs2: Use resource group glock sharing
gfs2: Allow node-wide exclusive glock sharing
gfs2: Add local resource group locking
gfs2: Add per-reservation reserved block accounting
gfs2: Rename rs_{free -> requested} and rd_{reserved -> requested}
gfs2: Check for active reservation in gfs2_release
gfs2: Don't search for unreserved space twice
gfs2: Only pass reservation down to gfs2_rbm_find
gfs2: Also reflect single-block allocations in rgd->rd_extfail_pt
gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end
gfs2: Add trusted xattr support
gfs2: Enable rgrplvb for sb_fs_format 1802
gfs2: Don't skip dlm unlock if glock has an lvb
gfs2: Lock imbalance on error path in gfs2_recover_one
gfs2: Move function gfs2_ail_empty_tr
gfs2: Get rid of current_tail()
...
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Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull idmapped mounts from Christian Brauner:
"This introduces idmapped mounts which has been in the making for some
time. Simply put, different mounts can expose the same file or
directory with different ownership. This initial implementation comes
with ports for fat, ext4 and with Christoph's port for xfs with more
filesystems being actively worked on by independent people and
maintainers.
Idmapping mounts handle a wide range of long standing use-cases. Here
are just a few:
- Idmapped mounts make it possible to easily share files between
multiple users or multiple machines especially in complex
scenarios. For example, idmapped mounts will be used in the
implementation of portable home directories in
systemd-homed.service(8) where they allow users to move their home
directory to an external storage device and use it on multiple
computers where they are assigned different uids and gids. This
effectively makes it possible to assign random uids and gids at
login time.
- It is possible to share files from the host with unprivileged
containers without having to change ownership permanently through
chown(2).
- It is possible to idmap a container's rootfs and without having to
mangle every file. For example, Chromebooks use it to share the
user's Download folder with their unprivileged containers in their
Linux subsystem.
- It is possible to share files between containers with
non-overlapping idmappings.
- Filesystem that lack a proper concept of ownership such as fat can
use idmapped mounts to implement discretionary access (DAC)
permission checking.
- They allow users to efficiently changing ownership on a per-mount
basis without having to (recursively) chown(2) all files. In
contrast to chown (2) changing ownership of large sets of files is
instantenous with idmapped mounts. This is especially useful when
ownership of a whole root filesystem of a virtual machine or
container is changed. With idmapped mounts a single syscall
mount_setattr syscall will be sufficient to change the ownership of
all files.
- Idmapped mounts always take the current ownership into account as
idmappings specify what a given uid or gid is supposed to be mapped
to. This contrasts with the chown(2) syscall which cannot by itself
take the current ownership of the files it changes into account. It
simply changes the ownership to the specified uid and gid. This is
especially problematic when recursively chown(2)ing a large set of
files which is commong with the aforementioned portable home
directory and container and vm scenario.
- Idmapped mounts allow to change ownership locally, restricting it
to specific mounts, and temporarily as the ownership changes only
apply as long as the mount exists.
Several userspace projects have either already put up patches and
pull-requests for this feature or will do so should you decide to pull
this:
- systemd: In a wide variety of scenarios but especially right away
in their implementation of portable home directories.
https://systemd.io/HOME_DIRECTORY/
- container runtimes: containerd, runC, LXD:To share data between
host and unprivileged containers, unprivileged and privileged
containers, etc. The pull request for idmapped mounts support in
containerd, the default Kubernetes runtime is already up for quite
a while now: https://github.com/containerd/containerd/pull/4734
- The virtio-fs developers and several users have expressed interest
in using this feature with virtual machines once virtio-fs is
ported.
- ChromeOS: Sharing host-directories with unprivileged containers.
I've tightly synced with all those projects and all of those listed
here have also expressed their need/desire for this feature on the
mailing list. For more info on how people use this there's a bunch of
talks about this too. Here's just two recent ones:
https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdfhttps://fosdem.org/2021/schedule/event/containers_idmap/
This comes with an extensive xfstests suite covering both ext4 and
xfs:
https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts
It covers truncation, creation, opening, xattrs, vfscaps, setid
execution, setgid inheritance and more both with idmapped and
non-idmapped mounts. It already helped to discover an unrelated xfs
setgid inheritance bug which has since been fixed in mainline. It will
be sent for inclusion with the xfstests project should you decide to
merge this.
In order to support per-mount idmappings vfsmounts are marked with
user namespaces. The idmapping of the user namespace will be used to
map the ids of vfs objects when they are accessed through that mount.
By default all vfsmounts are marked with the initial user namespace.
The initial user namespace is used to indicate that a mount is not
idmapped. All operations behave as before and this is verified in the
testsuite.
Based on prior discussions we want to attach the whole user namespace
and not just a dedicated idmapping struct. This allows us to reuse all
the helpers that already exist for dealing with idmappings instead of
introducing a whole new range of helpers. In addition, if we decide in
the future that we are confident enough to enable unprivileged users
to setup idmapped mounts the permission checking can take into account
whether the caller is privileged in the user namespace the mount is
currently marked with.
The user namespace the mount will be marked with can be specified by
passing a file descriptor refering to the user namespace as an
argument to the new mount_setattr() syscall together with the new
MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern
of extensibility.
The following conditions must be met in order to create an idmapped
mount:
- The caller must currently have the CAP_SYS_ADMIN capability in the
user namespace the underlying filesystem has been mounted in.
- The underlying filesystem must support idmapped mounts.
- The mount must not already be idmapped. This also implies that the
idmapping of a mount cannot be altered once it has been idmapped.
- The mount must be a detached/anonymous mount, i.e. it must have
been created by calling open_tree() with the OPEN_TREE_CLONE flag
and it must not already have been visible in the filesystem.
The last two points guarantee easier semantics for userspace and the
kernel and make the implementation significantly simpler.
By default vfsmounts are marked with the initial user namespace and no
behavioral or performance changes are observed.
The manpage with a detailed description can be found here:
1d7b902e28
In order to support idmapped mounts, filesystems need to be changed
and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The
patches to convert individual filesystem are not very large or
complicated overall as can be seen from the included fat, ext4, and
xfs ports. Patches for other filesystems are actively worked on and
will be sent out separately. The xfstestsuite can be used to verify
that port has been done correctly.
The mount_setattr() syscall is motivated independent of the idmapped
mounts patches and it's been around since July 2019. One of the most
valuable features of the new mount api is the ability to perform
mounts based on file descriptors only.
Together with the lookup restrictions available in the openat2()
RESOLVE_* flag namespace which we added in v5.6 this is the first time
we are close to hardened and race-free (e.g. symlinks) mounting and
path resolution.
While userspace has started porting to the new mount api to mount
proper filesystems and create new bind-mounts it is currently not
possible to change mount options of an already existing bind mount in
the new mount api since the mount_setattr() syscall is missing.
With the addition of the mount_setattr() syscall we remove this last
restriction and userspace can now fully port to the new mount api,
covering every use-case the old mount api could. We also add the
crucial ability to recursively change mount options for a whole mount
tree, both removing and adding mount options at the same time. This
syscall has been requested multiple times by various people and
projects.
There is a simple tool available at
https://github.com/brauner/mount-idmapped
that allows to create idmapped mounts so people can play with this
patch series. I'll add support for the regular mount binary should you
decide to pull this in the following weeks:
Here's an example to a simple idmapped mount of another user's home
directory:
u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt
u1001@f2-vm:/$ ls -al /home/ubuntu/
total 28
drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 .
drwxr-xr-x 4 root root 4096 Oct 28 04:00 ..
-rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history
-rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout
-rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc
-rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile
-rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful
-rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ ls -al /mnt/
total 28
drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 .
drwxr-xr-x 29 root root 4096 Oct 28 22:01 ..
-rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history
-rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout
-rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc
-rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile
-rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful
-rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ touch /mnt/my-file
u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file
u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file
u1001@f2-vm:/$ ls -al /mnt/my-file
-rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file
u1001@f2-vm:/$ ls -al /home/ubuntu/my-file
-rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file
u1001@f2-vm:/$ getfacl /mnt/my-file
getfacl: Removing leading '/' from absolute path names
# file: mnt/my-file
# owner: u1001
# group: u1001
user::rw-
user:u1001:rwx
group::rw-
mask::rwx
other::r--
u1001@f2-vm:/$ getfacl /home/ubuntu/my-file
getfacl: Removing leading '/' from absolute path names
# file: home/ubuntu/my-file
# owner: ubuntu
# group: ubuntu
user::rw-
user:ubuntu:rwx
group::rw-
mask::rwx
other::r--"
* tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits)
xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl
xfs: support idmapped mounts
ext4: support idmapped mounts
fat: handle idmapped mounts
tests: add mount_setattr() selftests
fs: introduce MOUNT_ATTR_IDMAP
fs: add mount_setattr()
fs: add attr_flags_to_mnt_flags helper
fs: split out functions to hold writers
namespace: only take read lock in do_reconfigure_mnt()
mount: make {lock,unlock}_mount_hash() static
namespace: take lock_mount_hash() directly when changing flags
nfs: do not export idmapped mounts
overlayfs: do not mount on top of idmapped mounts
ecryptfs: do not mount on top of idmapped mounts
ima: handle idmapped mounts
apparmor: handle idmapped mounts
fs: make helpers idmap mount aware
exec: handle idmapped mounts
would_dump: handle idmapped mounts
...
Pull percpu updates from Dennis Zhou:
"Percpu had a cleanup come in that makes use of the cpu bitmask helpers
instead of the current iterative approach.
This clean up then had an adverse interaction when clang's inlining
sensitivity is changed such that not all sites are inlined resulting
in modpost being upset with section mismatch due to percpu setup being
marked __init.
That was fixed by introducing __flatten to compiler_attributes.h"
* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: fix clang modpost section mismatch
percpu: reduce the number of cpu distance comparisons
The removal of EXPORT_UNUSED_SYMBOL() in commit 367948220fce looks like
(and was sold as) a no-op, but it actually had a rather serious and
subtle side effect: the UNUSED_SYMBOLS option not only enabled the
removed (unused) functionality, it also _disabled_ the TRIM_UNUSED_KSYMS
functionality.
And it turns out that TRIM_UNUSED_KSYMS is a huge time waste, and takes
up a third of the kernel build time for me. For no actual upside, since
no distro is likely to ever be able to enable it (because they all
support external kernel modules).
Rather than re-enable EXPORT_UNUSED_SYMBOL, this just disables the
TRIM_UNUSED_KSYMS option by marking it broken. I'm tempted to just
remove the support entirely, but maybe somebody has a use-case and can
fix the behavior of it.
I could have just disabled it for COMPILE_TEST, but it really smells
like the TRIM_UNUSED_KSYMS option is badly done and not really useful,
so this takes the more direct approach - let's see if anybody ever
actually notices or complains.
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jessica Yu <jeyu@kernel.org>
Fixes: 367948220fce ("module: remove EXPORT_UNUSED_SYMBOL*")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* acpica:
ACPICA: Remove some code duplication from acpi_ev_address_space_dispatch
ACPICA: Fix race in generic_serial_bus (I2C) and GPIO op_region parameter handling
* pm-cpufreq:
cpufreq: Fix typo in kerneldoc comment
cpufreq: schedutil: Remove update_lock comment from struct sugov_policy definition
cpufreq: schedutil: Remove needless sg_policy parameter from ignore_dl_rate_limit()
cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known
cpufreq: qcom-hw: drop devm_xxx() calls from init/exit hooks
* pm-opp:
opp: Don't skip freq update for different frequency
Summary of modules changes for the 5.12 merge window:
- Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export
types were introduced between 2006 - 2008. All the of the unused symbols have
been long removed and gpl future symbols were converted to gpl quite a long
time ago, and I don't believe these export types have been used ever since.
So, I think it should be safe to retire those export types now. (Christoph Hellwig)
- Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig)
- Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as
it is the only caller (Christoph Hellwig)
- Unexport find_module() and module_mutex and fix the last module
callers to not rely on these anymore. Make module_mutex internal to
the module loader. (Christoph Hellwig)
- Harden ELF checks on module load and validate ELF structures before checking
the module signature (Frank van der Linden)
- Fix undefined symbol warning for clang (Fangrui Song)
- Fix smatch warning (Dan Carpenter)
Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
- Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These
export types were introduced between 2006 - 2008. All the of the
unused symbols have been long removed and gpl future symbols were
converted to gpl quite a long time ago, and I don't believe these
export types have been used ever since. So, I think it should be safe
to retire those export types now (Christoph Hellwig)
- Refactor and clean up some aged code cruft in the module loader
(Christoph Hellwig)
- Build {,module_}kallsyms_on_each_symbol only when livepatching is
enabled, as it is the only caller (Christoph Hellwig)
- Unexport find_module() and module_mutex and fix the last module
callers to not rely on these anymore. Make module_mutex internal to
the module loader (Christoph Hellwig)
- Harden ELF checks on module load and validate ELF structures before
checking the module signature (Frank van der Linden)
- Fix undefined symbol warning for clang (Fangrui Song)
- Fix smatch warning (Dan Carpenter)
* tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: potential uninitialized return in module_kallsyms_on_each_symbol()
module: remove EXPORT_UNUSED_SYMBOL*
module: remove EXPORT_SYMBOL_GPL_FUTURE
module: move struct symsearch to module.c
module: pass struct find_symbol_args to find_symbol
module: merge each_symbol_section into find_symbol
module: remove each_symbol_in_section
module: mark module_mutex static
kallsyms: only build {,module_}kallsyms_on_each_symbol when required
kallsyms: refactor {,module_}kallsyms_on_each_symbol
module: use RCU to synchronize find_module
module: unexport find_module and module_mutex
drm: remove drm_fb_helper_modinit
powerpc/powernv: remove get_cxl_module
module: harden ELF info handling
module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
- Fix DTB alignment
- Remove < GCC 4 support
- Remove TRACING_SUPPORT selection
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Merge tag 'microblaze-v5.12' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze updates from Michal Simek:
- Fix DTB alignment
- Remove code for very old GCC versions
- Remove TRACING_SUPPORT selection
* tag 'microblaze-v5.12' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix built-in DTB alignment to be 8-byte aligned
microblaze: Remove support for gcc < 4
microblaze: do not select TRACING_SUPPORT directly
In gfs2_ail1_flush, we're using I/O plugging to give the block layer a
better chance of merging I/O requests. If we're too aggressive here, we
can end up waiting on I/O to complete while still plugged. Fix that in
a way similar to writeback_sb_inodes, except that we can't use
blk_flush_plug because blk_flush_plug_list is not exported.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
- Make objtool work for big-endian cross compiles
- Make stack tracking via stack pointer memory operations match push/pop
semantics to prepare for architectures w/o PUSH/POP instructions.
- Add support for analyzing alternatives
- Improve retpoline detection and handling
- Improve assembly code coverage on x86
- Provide support for inlined stack switching
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Merge tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Thomas Gleixner:
- Make objtool work for big-endian cross compiles
- Make stack tracking via stack pointer memory operations match
push/pop semantics to prepare for architectures w/o PUSH/POP
instructions.
- Add support for analyzing alternatives
- Improve retpoline detection and handling
- Improve assembly code coverage on x86
- Provide support for inlined stack switching
* tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
objtool: Support stack-swizzle
objtool,x86: Additionally decode: mov %rsp, (%reg)
x86/unwind/orc: Change REG_SP_INDIRECT
x86/power: Support objtool validation in hibernate_asm_64.S
x86/power: Move restore_registers() to top of the file
x86/power: Annotate indirect branches as safe
x86/acpi: Support objtool validation in wakeup_64.S
x86/acpi: Annotate indirect branch as safe
x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S
x86/xen/pvh: Annotate indirect branch as safe
x86/xen: Support objtool vmlinux.o validation in xen-head.S
x86/xen: Support objtool validation in xen-asm.S
objtool: Add xen_start_kernel() to noreturn list
objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC
objtool: Add asm version of STACK_FRAME_NON_STANDARD
objtool: Assume only ELF functions do sibling calls
x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub
objtool: Support retpoline jump detection for vmlinux.o
objtool: Fix ".cold" section suffix check for newer versions of GCC
objtool: Fix retpoline detection in asm code
...
NORMAL (0x0) and IDLE (0x4) are really two different states. Hence you
cannot check for both using a bitmask, as that checks for IDLE only,
breaking operation for devices that are in NORMAL state.
Fix the wait function to report either state as ready.
Fixes: 6524d8eac258452e ("Input: st1232 - add IDLE state as ready condition")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210223090201.1430542-1-geert+renesas@glider.be
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Clang LTO build infrastructure and arm64-specific enablement (Sami Tolvanen)
- Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)
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Merge tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull clang LTO updates from Kees Cook:
"Clang Link Time Optimization.
This is built on the work done preparing for LTO by arm64 folks,
tracing folks, etc. This includes the core changes as well as the
remaining pieces for arm64 (LTO has been the default build method on
Android for about 3 years now, as it is the prerequisite for the
Control Flow Integrity protections).
While x86 LTO enablement is done, it depends on some pending objtool
clean-ups. It's possible that I'll send a "part 2" pull request for
LTO that includes x86 support.
For merge log posterity, and as detailed in commit dc5723b02e52
("kbuild: add support for Clang LTO"), here is the lt;dr to do an LTO
build:
make LLVM=1 LLVM_IAS=1 defconfig
scripts/config -e LTO_CLANG_THIN
make LLVM=1 LLVM_IAS=1
(To do a cross-compile of arm64, add "CROSS_COMPILE=aarch64-linux-gnu-"
and "ARCH=arm64" to the "make" command lines.)
Summary:
- Clang LTO build infrastructure and arm64-specific enablement (Sami
Tolvanen)
- Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)"
* tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
kbuild: prevent CC_FLAGS_LTO self-bloating on recursive rebuilds
arm64: allow LTO to be selected
arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS
arm64: vdso: disable LTO
drivers/misc/lkdtm: disable LTO for rodata.o
efi/libstub: disable LTO
scripts/mod: disable LTO for empty.c
modpost: lto: strip .lto from module names
PCI: Fix PREL32 relocations for LTO
init: lto: fix PREL32 relocations
init: lto: ensure initcall ordering
kbuild: lto: add a default list of used symbols
kbuild: lto: merge module sections
kbuild: lto: limit inlining
kbuild: lto: fix module versioning
kbuild: add support for Clang LTO
tracing: move function tracer options to Kconfig
- hid-multitouch devices should be put into high-latency mode when
suspended in order to be in line with Windows Precision Touchpad
guidelines. From Blaž Hrastnik.
- improved handling of generic HID keyboard (no more splitting system
and consumer controls away), in order to make it easier for userspace
to figure out the details of the device easier. From Dmitry Torokhov.
- report data sanitization fixes from Will McVicker and Randy Dunlap
The common cros-ec keymap has been defined as macros. This patch uses
the macros to simply linux,keymap in cros-ec-keyboard.dtsi file.
This patch also creates an alias for keyboard-controller to make it
easier to override the keymap in board-specific dts later.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.2.I9ec9c3c61eded22a5f7fbff838d23fc95ec7cfe0@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Decouple LOCK from F13 and directly map the LOCK key (KSI3/KSO9) to
KEY_SLEEP action key code.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115143555.v6.3.I96134907488f41f358d03f3c1b08194f9547e670@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
In Chrome OS, the keyboard matrix can be split to two groups:
The keymap for the top row keys can be customized based on OEM
preference, while the keymap for the other keys is generic/fixed
across boards.
This patch creates marcos for the keymaps of these two groups, making
it easier to reuse the generic portion of keymap when we override the
keymap in the board-specific dts for custom top row design.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.1.Iaa8a60cf2ed4b7ad5e2fbb4ad76a1c600ee36113@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The top-row keys in a keyboard usually have dual functionalities.
E.g. A function key "F1" is also an action key "Browser back".
Therefore, when an application receives an action key code from
a top-row key press, the application needs to know how to correlate
the action key code with the function key code and do the conversion
whenever necessary.
Since the userpace already knows the key scanlines (row/column)
associated with a received key code. Essentially, the userspace only
needs a mapping between the key row/column and the matching physical
location in the top row.
So, enhance the cros-ec-keyb driver to create such a mapping
and expose it to userspace in the form of a function_row_physmap
attribute. The attribute would be a space separated ordered list of
row/column codes for the keys in the function row, in a left-to-right
order.
The attribute will only be present when the device has a custom design
for the top-row keys.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115122412.v7.2.I6542d7d9d0b246e7079bb16b41e697b2ac4b4e39@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add a new property `function-row-physmap` to the
device tree for the custom keyboard top row design.
The property describes the rows/columns of the top row keys
from left to right.
Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115122412.v7.1.I025fb861cd5fa0ef5286b7dce514728e9df7ae74@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v5.11' into next
Merge with mainline to get latest APIs and device tree bindings.
This time a calm set with no core changes.
New drivers/subdrivers:
- Renesas R8A7790A0 pin controller.
- Allwinner H616 and H616-R pin controllers.
- Qualcomm SM8350 and SC8180x pin controllers.
Improvements:
- Redo the DT bindings for Ralink RT2880.
- A common Qualcomm TLMM DT binding in YAML.
- Delete the unused drivers for U300, COH901, Sirf Atlas, and ZTE ZX.
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Merge tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.12 kernel.
This time a calm set with no core changes.
New drivers/subdrivers:
- Renesas R8A7790A0 pin controller.
- Allwinner H616 and H616-R pin controllers.
- Qualcomm SM8350 and SC8180x pin controllers.
Improvements:
- Redo the DT bindings for Ralink RT2880.
- A common Qualcomm TLMM DT binding in YAML.
- Delete the unused drivers for U300, COH901, Sirf Atlas, and ZTE ZX"
* tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (71 commits)
pinctrl: mediatek: Fix trigger type setting follow for unexpected interrupt
dt-bindings: pinctrl: Group tuples in pin control properties
pinctrl: nuvoton: npcm7xx: Fix alignment of table header comment
pinctrl: at91-pio4: fix "Prefer 'unsigned int' to bare use of 'unsigned'"
pinctrl: at91-pio4: add support for slew-rate
dt-bindings: pinctrl: at91-pio4: add slew-rate
pinctrl: actions: Add depends on || COMPILE_TEST
pinctrl: single: set function name when adding function
pinctrl: qcom: Add sc8180x TLMM driver
dt-bindings: pinctrl: qcom: Add sc8180x binding
dt-bindings: pinctrl: qcom: Define common TLMM binding
pinctrl: qcom: Add SM8350 pinctrl driver
dt-bindings: pinctrl: qcom: Add SM8350 pinctrl bindings
pinctrl: samsung: use raw_spinlock for s3c64xx
dt-bindings: mediatek: mt8192: Fix dt_binding_check warning
pinctrl: qcom: spmi-mpp: Add PM8019 compatible
pinctrl: pinmux: add function selector to pinmux-functions
pinctrl: samsung: use raw_spinlock for locking
pinctrl: clarify #pinctrl-cells for pinctrl-single,pins
pinctrl: actions: Add the platform dependency to drivers
...
Only one change in this pull, but it's required for other things, so it
needs to go in.
-corey
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Merge tag 'for-linus-5.12-1' of git://github.com/cminyard/linux-ipmi
Pull IPMI update from Corey Minyard:
"Only one change, but it's required for other things, so it needs to go
in"
* tag 'for-linus-5.12-1' of git://github.com/cminyard/linux-ipmi:
ipmi: remove open coded version of SMBus block write
- replace mm/frame_vector.c by get_user_pages in misc/habana and
drm/exynos drivers, then move that into media as it's sole user
- close race in generic_access_phys
- s390 pci ioctl fix of this series landed in 5.11 already
- properly revoke iomem mappings (/dev/mem, pci files)
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Merge tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm
Pull follow_pfn() updates from Daniel Vetter:
"Fixes around VM_FPNMAP and follow_pfn:
- replace mm/frame_vector.c by get_user_pages in misc/habana and
drm/exynos drivers, then move that into media as it's sole user
- close race in generic_access_phys
- s390 pci ioctl fix of this series landed in 5.11 already
- properly revoke iomem mappings (/dev/mem, pci files)"
* tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
PCI: Revoke mappings like devmem
PCI: Also set up legacy files only after sysfs init
sysfs: Support zapping of binary attr mmaps
resource: Move devmem revoke code to resource framework
/dev/mem: Only set filp->f_mapping
PCI: Obey iomem restrictions for procfs mmap
mm: Close race in generic_access_phys
media: videobuf2: Move frame_vector into media subsystem
mm/frame-vector: Use FOLL_LONGTERM
misc/habana: Use FOLL_LONGTERM for userptr
misc/habana: Stop using frame_vector helpers
drm/exynos: Use FOLL_LONGTERM for g2d cmdlists
drm/exynos: Stop using frame_vector helpers
drm userspaces uses this, systemd uses this, makes sense to pull it
out from the checkpoint-restore bundle. Kees reviewed this from
security pov and is happy with the final version.
LWN coverage: https://lwn.net/Articles/845448/
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Merge tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm
Pull kcmp kconfig update from Daniel Vetter:
"Make the kcmp syscall available independently of checkpoint/restore.
drm userspaces uses this, systemd uses this, so makes sense to pull it
out from the checkpoint-restore bundle.
Kees reviewed this from security pov and is happy with the final
version"
Link: https://lwn.net/Articles/845448/
* tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
Pull user namespace update from Eric Biederman:
"There are several pieces of active development, but only a single
change made it through the gauntlet to be ready for v5.12. That change
is tightening up the semantics of the v3 capabilities xattr. It is
just short of being a bug-fix/security issue as no user space is known
to even generate the problem case"
* 'userns-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
capabilities: Don't allow writing ambiguous v3 file capabilities
Pull qorkqueue updates from Tejun Heo:
"Tracepoint and comment updates only"
* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Use %s instead of function name
workqueue: tracing the name of the workqueue instead of it's address
workqueue: fix annotation for WQ_SYSFS
Pull cgroup updates from Tejun Heo:
"Nothing interesting. Just two minor patches"
* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cpuset: fix typos in comments
cgroup: cgroup.{procs,threads} factor out common parts
A large series adding wrappers for our interrupt handlers, so that irq/nmi/user
tracking can be isolated in the wrappers rather than spread in each handler.
Conversion of the 32-bit syscall handling into C.
A series from Nick to streamline our TLB flushing when using the Radix MMU.
Switch to using queued spinlocks by default for 64-bit server CPUs.
A rework of our PCI probing so that it happens later in boot, when more generic
infrastructure is available.
Two small fixes to allow 32-bit little-endian processes to run on 64-bit
kernels.
Other smaller features, fixes & cleanups.
Thanks to:
Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira
Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy,
Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh
Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus
Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver
O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan
Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, Zheng
Yongjun.
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Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- A large series adding wrappers for our interrupt handlers, so that
irq/nmi/user tracking can be isolated in the wrappers rather than
spread in each handler.
- Conversion of the 32-bit syscall handling into C.
- A series from Nick to streamline our TLB flushing when using the
Radix MMU.
- Switch to using queued spinlocks by default for 64-bit server CPUs.
- A rework of our PCI probing so that it happens later in boot, when
more generic infrastructure is available.
- Two small fixes to allow 32-bit little-endian processes to run on
64-bit kernels.
- Other smaller features, fixes & cleanups.
Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh
Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang
Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian
Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong,
Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan
Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu,
Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen
Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun.
* tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits)
powerpc/perf: Adds support for programming of Thresholding in P10
powerpc/pci: Remove unimplemented prototypes
powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user()
powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size()
powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user()
powerpc/64: Fix stack trace not displaying final frame
powerpc/time: Remove get_tbl()
powerpc/time: Avoid using get_tbl()
spi: mpc52xx: Avoid using get_tbl()
powerpc/syscall: Avoid storing 'current' in another pointer
powerpc/32: Handle bookE debugging in C in syscall entry/exit
powerpc/syscall: Do not check unsupported scv vector on PPC32
powerpc/32: Remove the counter in global_dbcr0
powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry
powerpc/syscall: implement system call entry/exit logic in C for PPC32
powerpc/32: Always save non volatile GPRs at syscall entry
powerpc/syscall: Change condition to check MSR_RI
powerpc/syscall: Save r3 in regs->orig_r3
powerpc/syscall: Use is_compat_task()
powerpc/syscall: Make interrupt.c buildable on PPC32
...
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
amba: Make use of bus_type functions
amba: Make the remove callback return void
vfio: platform: simplify device removal
amba: reorder functions
amba: Fix resource leak for drivers without .remove
ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
ARM: 9051/1: vdso: remove unneded extra-y addition
ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
ARM: 9049/1: locomo: make locomo bus's remove callback return void
ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
ARM: 9047/1: smp: remove unused variable
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
ARM: 9042/1: debug: no uncompress debugging while semihosting
ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
before the 5.11 release:
- Ensure a clock is enabled on sh_cmt
- Trivial compile fail and compile warning fixes
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Merge tag 'timers-urgent-2021-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A small set of clockevent fixes which fell through the cracks before
the 5.11 release:
- Ensure a clock is enabled on sh_cmt
- Trivial compile fail and compile warning fixes"
* tag 'timers-urgent-2021-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
clocksource/drivers/sh_cmt: Make sure channel clock supply is enabled
clocksource/drivers/ixp4xx: Select TIMER_OF when needed
- Update to the way irqs and preemption is tracked via the trace event PC field
- Fix handling of unregistering event failing due to allocate memory.
This is only triggered by failure injection, as it is pretty much guaranteed
to have less than a page allocation succeed.
- Do not show the useless "filter" or "enable" files for the "ftrace" trace
system, as they have no effect on doing anything.
- Add a warning if kprobes are registered more than once.
- Synthetic events now have their fields parsed by semicolons.
Old formats without semicolons will still work, but new features will
require them.
- New option to allow trace events to show %p without hashing in trace file.
The trace file can only be read by root, and reading the raw event buffer
did not have any pointers hashed, so this does not expose anything new.
- New directory in tools called tools/tracing, where a new tool that reads
sequential latency reports from the ftrace latency tracers.
- Other minor fixes and cleanups.
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Merge tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- Update to the way irqs and preemption is tracked via the trace event
PC field
- Fix handling of unregistering event failing due to allocate memory.
This is only triggered by failure injection, as it is pretty much
guaranteed to have less than a page allocation succeed.
- Do not show the useless "filter" or "enable" files for the "ftrace"
trace system, as they have no effect on doing anything.
- Add a warning if kprobes are registered more than once.
- Synthetic events now have their fields parsed by semicolons. Old
formats without semicolons will still work, but new features will
require them.
- New option to allow trace events to show %p without hashing in trace
file. The trace file can only be read by root, and reading the raw
event buffer did not have any pointers hashed, so this does not
expose anything new.
- New directory in tools called tools/tracing, where a new tool that
reads sequential latency reports from the ftrace latency tracers.
- Other minor fixes and cleanups.
* tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (33 commits)
kprobes: Fix to delay the kprobes jump optimization
tracing/tools: Add the latency-collector to tools directory
tracing: Make hash-ptr option default
tracing: Add ptr-hash option to show the hashed pointer value
tracing: Update the stage 3 of trace event macro comment
tracing: Show real address for trace event arguments
selftests/ftrace: Add '!event' synthetic event syntax check
selftests/ftrace: Update synthetic event syntax errors
tracing: Add a backward-compatibility check for synthetic event creation
tracing: Update synth command errors
tracing: Rework synthetic event command parsing
tracing/dynevent: Delegate parsing to create function
kprobes: Warn if the kprobe is reregistered
ftrace: Remove unused ftrace_force_update()
tracepoints: Code clean up
tracepoints: Do not punish non static call users
tracepoints: Remove unnecessary "data_args" macro parameter
tracing: Do not create "enable" or "filter" files for ftrace event subsystem
kernel: trace: preemptirq_delay_test: add cpu affinity
tracepoint: Do not fail unregistering a probe due to memory failure
...
