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1,463,462 commits

Author SHA1 Message Date
Christian Brauner
32f54f2bbc
selftests/filesystems: add tests for empty mount namespaces
Add a test suite for the UNSHARE_EMPTY_MNTNS and CLONE_EMPTY_MNTNS
flags exercising the empty mount namespace functionality through the
kselftest harness.

The tests cover:

- basic functionality: unshare succeeds, exactly one mount exists in
  the new namespace, root and cwd point to the same mount
- flag interactions: UNSHARE_EMPTY_MNTNS works standalone without
  explicit CLONE_NEWNS, combines correctly with CLONE_NEWUSER and
  other namespace flags (CLONE_NEWUTS, CLONE_NEWIPC)
- edge cases: EPERM without capabilities, works from a user namespace,
  many source mounts still result in one mount, cwd on a different
  mount gets reset to root
- error paths: invalid flags return EINVAL
- regression: plain CLONE_NEWNS still copies the full mount tree,
  other namespace unshares are unaffected
- mount properties: the root mount has the expected statmount
  properties, is its own parent, and is the only entry returned by
  listmount
- repeated unshare: consecutive UNSHARE_EMPTY_MNTNS calls each
  produce a new namespace with a distinct mount ID
- overmount workflow: verifies the intended usage pattern of creating
  an empty mount namespace with a nullfs root and then mounting tmpfs
  over it to build a writable filesystem from scratch

Link: https://patch.msgid.link/20260306-work-empty-mntns-consolidated-v1-2-6eb30529bbb0@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:55 +01:00
Christian Brauner
9d4e752a24
namespace: allow creating empty mount namespaces
Add support for creating a mount namespace that contains only a copy of
the root mount from the caller's mount namespace, with none of the
child mounts.  This is useful for containers and sandboxes that want to
start with a minimal mount table and populate it from scratch rather
than inheriting and then tearing down the full mount tree.

Two new flags are introduced:

- CLONE_EMPTY_MNTNS for clone3(), using the 64-bit flag space.

- UNSHARE_EMPTY_MNTNS for unshare(), reusing the
  CLONE_PARENT_SETTID bit which has no meaning for unshare.

Both flags imply CLONE_NEWNS.  For the unshare path,
UNSHARE_EMPTY_MNTNS is converted to CLONE_EMPTY_MNTNS in
unshare_nsproxy_namespaces() before it reaches copy_mnt_ns(), so the
mount namespace code only needs to handle a single flag.

In copy_mnt_ns(), when CLONE_EMPTY_MNTNS is set, clone_mnt() is used
instead of copy_tree() to clone only the root mount.  The caller's root
and working directory are both reset to the root dentry of the new
mount.

The cleanup variables are changed from vfsmount pointers with
__free(mntput) to struct path with __free(path_put) because the empty
mount namespace path needs to release both mount and dentry references
when replacing the caller's root and pwd.  In the normal (non-empty)
path only the mount component is set, and dput(NULL) is a no-op so
path_put remains correct there as well.

Link: https://patch.msgid.link/20260306-work-empty-mntns-consolidated-v1-1-6eb30529bbb0@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:55 +01:00
Christian Brauner
0209e31659
Merge patch series "fsmount: add FSMOUNT_NAMESPACE"
Christian Brauner <brauner@kernel.org> says:

Add FSMOUNT_NAMESPACE flag to fsmount() that creates a new mount
namespace with the newly created filesystem attached to a copy of the
real rootfs. This returns a namespace file descriptor instead of an
O_PATH mount fd, similar to how OPEN_TREE_NAMESPACE works for
open_tree().

This allows creating a new filesystem and immediately placing it in a
new mount namespace in a single operation, which is useful for container
runtimes and other namespace-based isolation mechanisms.

This accompanies OPEN_TREE_NAMESPACE and avoids a needless detour via
OPEN_TREE_NAMESPACE to get the same effect. Will be especially useful
when you mount an actual filesystem to be used as the container rootfs.

* patches from https://patch.msgid.link/20260122-work-fsmount-namespace-v1-0-5ef0a886e646@kernel.org:
  selftests/open_tree_ns: fix compilation
  selftests: add FSMOUNT_NAMESPACE tests
  selftests/statmount: add statmount_alloc() helper
  tools: update mount.h header
  mount: add FSMOUNT_NAMESPACE
  mount: simplify __do_loopback()
  mount: start iterating from start of rbtree

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-0-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:54 +01:00
Christian Brauner
3ac7ea91f3
selftests: add FSMOUNT_NAMESPACE tests
Add selftests for FSMOUNT_NAMESPACE which creates a new mount namespace
with the newly created filesystem mounted onto a copy of the real
rootfs.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-6-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:54 +01:00
Christian Brauner
be1ca3ee8f
selftests/statmount: add statmount_alloc() helper
Add a helper to allocate a statmount buffer and call statmount(). This
helper will be shared by multiple test suites that need to query mount
information via statmount().

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-5-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:54 +01:00
Christian Brauner
fc1a05de00
tools: update mount.h header
Update the mount.h header so we can rely on it in the selftests.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-4-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:54 +01:00
Christian Brauner
5e8969bd19
mount: add FSMOUNT_NAMESPACE
Add FSMOUNT_NAMESPACE flag to fsmount() that creates a new mount
namespace with the newly created filesystem attached to a copy of the
real rootfs. This returns a namespace file descriptor instead of an
O_PATH mount fd, similar to how OPEN_TREE_NAMESPACE works for open_tree().

This allows creating a new filesystem and immediately placing it in a
new mount namespace in a single operation, which is useful for container
runtimes and other namespace-based isolation mechanisms.

The rootfs mount is created before copying the real rootfs for the new
namespace meaning that the mount namespace id for the mount of the root
of the namespace is bigger than the child mounted on top of it. We've
never explicitly given the guarantee for such ordering and I doubt
anyone relies on it. Accepting that lets us avoid copying the mount
again and also avoids having to massage may_copy_tree() to grant an
exception for fsmount->mnt->mnt_ns being NULL.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-3-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:54 +01:00
Christian Brauner
ad4a3599e5
mount: simplify __do_loopback()
Remove the OPEN_TREE_NAMESPACE flag checking from __do_loopback() and
instead have callers pass CL_COPY_MNT_NS_FILE directly in copy_flags.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-2-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:53 +01:00
Christian Brauner
0c0b046392
mount: start iterating from start of rbtree
If the root of the namespace has an id that's greater than the child
we'd not find it. Handle that case.

Link: https://patch.msgid.link/20260122-work-fsmount-namespace-v1-1-5ef0a886e646@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-12 13:33:50 +01:00
Akari Tsuyukusa
820ed0c1a1
arm64: dts: mediatek: mt7986a: Fix gpio-ranges pin count
The gpio-ranges in the MT7986A pinctrl node were incorrectly defined,
therefore, pin 100 cannot be used.
Correct the range count to match the driver.

Fixes: c3a064a32e ("arm64: dts: mediatek: add pinctrl support for mt7986a")
Signed-off-by: Akari Tsuyukusa <akkun11.open@gmail.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
2026-03-12 13:32:17 +01:00
Akari Tsuyukusa
b62a927f4a
arm64: dts: mediatek: mt7981b: Fix gpio-ranges pin count
The gpio-ranges in the MT7981B pinctrl node were incorrectly defined,
therefore, pin 56 cannot be used.
Correct the range count to match the driver.

Fixes: 62b24c7fdf ("arm64: dts: mediatek: mt7981: add pinctrl")
Signed-off-by: Akari Tsuyukusa <akkun11.open@gmail.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
2026-03-12 13:32:17 +01:00
Akari Tsuyukusa
c4c4823c8a
arm64: dts: mediatek: mt6795: Fix gpio-ranges pin count
The gpio-ranges in the MT6795 pinctrl node were incorrectly defined,
therefore, GPIO196 cannot be used.
Correct the range count to match the driver.

Fixes: b888886a45 ("arm64: dts: mediatek: mt6795: Add pinctrl controller node")
Signed-off-by: Akari Tsuyukusa <akkun11.open@gmail.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
2026-03-12 13:32:16 +01:00
MD Danish Anwar
8e7adcf815 net: ti: icssg: Fix wrong macro used in RX classifier configuration
The RX_CLASS_OR_REG macro is being used with RX_CLASS_OR_EN parameter
when writing to the AND enable register. This should use RX_CLASS_AND_EN
instead to properly configure the classifier AND enable register.

Fix this by using the correct RX_CLASS_AND_EN macro parameter for
RX_CLASS_OR_REG when configuring the PTP duplicate and HSR tag
classifiers.

Fixes: f56438a74d ("net: ti: icssg: Add HSR/PRP protocol frame filtering")
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://patch.msgid.link/20260310132035.1299787-1-danishanwar@ti.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 13:30:03 +01:00
Eric Dumazet
6f459eda8b tcp: add tcp_release_cb_cond() helper
Majority of tcp_release_cb() calls do nothing at all.

Provide tcp_release_cb_cond() helper so that release_sock()
can avoid these calls.

Also hint the compiler that __release_sock() and wake_up()
are rarely called.

$ scripts/bloat-o-meter -t vmlinux.old vmlinux.new
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-77 (-77)
Function                                     old     new   delta
release_sock                                 258     181     -77
Total: Before=25235790, After=25235713, chg -0.00%

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260310124451.2280968-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 13:22:03 +01:00
Takashi Iwai
9250673cf2 ASoC: Fixes for v7.0
Quite a large pull request, but nothing too concerning here - everything
 is fairly small.  We've got a couple of smaller core fixes for races on
 card teardown from Matteo Cotifava, a fix for handling dodgy DMI
 information generated by u-boot, some driver specific fixes and some new
 device IDs for Tegra.
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Merge tag 'asoc-fix-v7.0-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v7.0

Quite a large pull request, but nothing too concerning here - everything
is fairly small.  We've got a couple of smaller core fixes for races on
card teardown from Matteo Cotifava, a fix for handling dodgy DMI
information generated by u-boot, some driver specific fixes and some new
device IDs for Tegra.
2026-03-12 12:59:28 +01:00
Nathan Chancellor
0d3fccf68d
kbuild: Use '-fms-anonymous-structs' if it is available
Clang recently added '-fms-anonymous-structs' [1] to specifically enable
the Microsoft tagged anonymous structure / union extension, for which
the kernel added '-fms-extensions' in commit c4781dc3d1 ("Kbuild:
enable -fms-extensions"). Switch to this more narrow option if it is
available, which would have helped avoid the issue addressed by
commit a6773e6932 ("jfs: Rename _inline to avoid conflict with clang's
'-fms-extensions'"). GCC has talked about adding a similar flag [2] as
well but potentially naming it differently.

Move the selection of the flag to Kconfig to make it easier to use
cc-option (as CC_FLAGS_DIALECT may be used in arch Makefiles, which may
be too early for cc-option in Kbuild) and customize based on compiler
flag names.

Link: c391efe6fb [1]
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123623 [2]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>  # parisc
Link: https://patch.msgid.link/20260223-fms-anonymous-structs-v1-2-8ee406d3c36c@kernel.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:52:37 +01:00
Nathan Chancellor
ec4c28276c
kbuild: Consolidate C dialect options
Introduce CC_FLAGS_DIALECT to make it easier to update the various
places in the tree that rely on the GNU C standard and Microsoft
extensions flags atomically. All remaining uses of '-std=gnu11' and
'-fms-extensions' are in the tools directory (which has its own build
system) and other standalone Makefiles. This will allow the kernel to
use a narrower option to enable the Microsoft anonymous tagged structure
extension in a simpler manner. Place the CC_FLAGS_DIALECT block after
the configuration include (so that a future change can move the
selection of the flag to Kconfig) but before the
arch/$(SRCARCH)/Makefile include (so that CC_FLAGS_DIALECT is available
for use in those Makefiles).

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>  # parisc
Link: https://patch.msgid.link/20260223-fms-anonymous-structs-v1-1-8ee406d3c36c@kernel.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:52:37 +01:00
Thomas Weißschuh
febb5c81fa
kbuild: uapi: remove now unneeded guard headers
The test compilation does not allow usage of the toolchain headers
anymore, so these dummy headers are not needed anymore.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-9-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:09 +01:00
Thomas Weißschuh
510c7a5736
kbuild: uapi: simplify libc dependency logic
The only left user of the condition inverts it.

Invert the condition completely and simplify its user.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-8-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:08 +01:00
Thomas Weißschuh
579f103fb9
kbuild: uapi: use custom stub headers instead of libc ones
Now that custom stub headers are provided for all libc headers used from
the UAPI headers, the dependency on the toolchain libc can be dropped.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-7-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:08 +01:00
Thomas Weißschuh
aad94ba683
kbuild: uapi: provide stub includes for some libc headers
Some UAPI headers incorrectly use libc headers. To compile-test these
UAPI headers, their respective libc dependencies need to be present.
Not all kernel toolchains provide these headers, reducing test coverage.

Introduce some stub headers which provide just enough symbols to test
all UAPI headers. Most headers are empty anyways, as their symbols are
only used in macros which are not actually evaluated.

As these headers are only ever used with newer kernel toolchains, they
can defer to compiler builtins in many cases.

As more UAPI headers are cleaned up to not require these stubs anymore,
they can be removed again.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-6-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:08 +01:00
Thomas Weißschuh
0ef1b7a66b
kbuild: uapi: only use dummy-include for headers which use libc
The headers which do not rely on libc are using built using -nostdinc.
For them the dummy headers are pointless.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-5-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:08 +01:00
Thomas Weißschuh
60a16beedf
kbuild: uapi: completely exclude linux/bpf_perf_event.h on nios2
This header is actually not buildable on nios. As nobody built nios2
with CONFIG_CC_CAN_LINK=y so far, this produced no errors.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-4-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:07 +01:00
Thomas Weißschuh
45bd8643c1
kbuild: uapi: deduplicate linux/bpf_perf_event.h exclusions
This header is excluded for multiple architectures.
Use a single exclusion for all of them.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-3-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:07 +01:00
Thomas Weißschuh
a8c9d3cc23
kbuild: uapi: test linux/bpf_perf_event.h on powerpc
This header works now, so test it.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-2-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:07 +01:00
Thomas Weißschuh
47bca1cbf6
hexagon: uapi: Fix structure alignment attribute
__aligned() is a kernel macro, which is not available in UAPI headers.

Use the compiler-provided alignment attribute directly.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Link: https://patch.msgid.link/20260227-kbuild-uapi-libc-v1-1-c17de0d19776@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-03-12 12:48:07 +01:00
Mark Brown
00da2edc64
ASoC: wm_adsp: Some improvements to firmware file
Merge series from Richard Fitzgerald <rf@opensource.cirrus.com>:

This series makes some improvements to the code that searches for firmware
files.

Patch 1 is a trivial patch to remove an unused function argument, before
   adding any new code that uses this API.

Patches 2..4 add KUnit testing to prove that the subsequent changes don't
   break anything.

The remaining patches remove duplicated code and clean up some of the
implementation.
2026-03-12 11:29:05 +00:00
Mark Brown
0670bc81f5
ASoC: fsl: add bitcount and timestamp controls
Merge series from Shengjiu Wang <shengjiu.wang@nxp.com>:

The SAI and XCVR have the timestamp counters and bit counters, which can
be used by software to track the progress of the transmitter and receiver.
They can also be used to calculate the relative frequency of the bit clock
against the bus interface clock.
2026-03-12 11:29:01 +00:00
Pei Xiao
869d5b4b2a
spi: atcspi200: fix mutex initialization order
The atcspi_exec_mem_op() function may call mutex_lock() on the
driver's mutex before it is properly initialized if a SPI memory
operation is initiated immediately after devm_spi_register_controller()
is called. The mutex initialization currently occurs after the
controller registration, which leaves a window where the mutex could
be used uninitialized.

Move the mutex initialization to the beginning of the probe function,
before any registration or resource allocation.

Fixes: 34e3815ea4 ("spi: atcspi200: Add ATCSPI200 SPI controller driver")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Link: https://patch.msgid.link/15a71241affc25108a97d40d9d3dd1bc3d2d69ed.1773282905.git.xiaopei01@kylinos.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-03-12 11:28:31 +00:00
Wojciech Slenska
4320f1f111 dt-bindings: net: qcom,ipa: document qcm2290 compatible
Document that ipa on qcm2290 uses version 4.2, the same
as sc7180.

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Wojciech Slenska <wojciech.slenska@gmail.com>
Link: https://patch.msgid.link/20260310112309.79261-2-wojciech.slenska@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 12:28:11 +01:00
Thomas Gleixner
1432f9d4e8 clocksource: Don't use non-continuous clocksources as watchdog
Using a non-continuous aka untrusted clocksource as a watchdog for another
untrusted clocksource is equivalent to putting the fox in charge of the
henhouse.

That's especially true with the jiffies clocksource which depends on
interrupt delivery based on a periodic timer. Neither the frequency of that
timer is trustworthy nor the kernel's ability to react on it in a timely
manner and rearm it if it is not self rearming.

Just don't bother to deal with this. It's not worth the trouble and only
relevant to museum piece hardware.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260123231521.858743259@kernel.org
2026-03-12 12:23:27 +01:00
Thomas Gleixner
79ccb0693a x86/tsc: Handle CLOCK_SOURCE_VALID_FOR_HRES correctly
Unconditionally setting the CLOCK_SOURCE_VALID_FOR_HRES for the real TSC
clocksource is wrong as there is no guarantee that the early TSC was
validated for high resolution mode.

Set the flag only when the early TSC was validated as otherwise the
clocksource selection might enable high resolution mode with a TSC of
unknown quality and possibly no way to back out once it is discovered to be
unsuitable.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260123231521.790598171@kernel.org
2026-03-12 12:23:27 +01:00
Thomas Gleixner
ced7072a3a MIPS: Don't select CLOCKSOURCE_WATCHDOG
MIPS selects CLOCKSOURCE_WATCHDOG, but none of the clocksources actually
sets the MUST_VERIFY flag. So compiling the watchdog in is a pointless
exercise. Remove the selects.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260123231521.723433371@kernel.org
2026-03-12 12:23:26 +01:00
Thomas Gleixner
2a14f7c5ee parisc: Remove unused clocksource flags
PARISC does not enable the clocksource watchdog, so the VERIFY flags are
pointless as they are not evaluated. Remove them from the clocksource.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patch.msgid.link/20260123231521.655892451@kernel.org
2026-03-12 12:23:26 +01:00
Thomas Weißschuh (Schneider Electric)
88c316ff76 hrtimer: Add a helper to retrieve a hrtimer from its timerqueue node
The container_of() call is open-coded multiple times.

Add a helper macro.

Use container_of_const() to preserve constness.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-12-095357392669@linutronix.de
2026-03-12 12:15:56 +01:00
Thomas Weißschuh (Schneider Electric)
f27fc117cf hrtimer: Remove trailing comma after HRTIMER_MAX_CLOCK_BASES
HRTIMER_MAX_CLOCK_BASES is required to stay the last value of the enum.

Drop the trailing comma so no new members are added after it by mistake.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-11-095357392669@linutronix.de
2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)
f12ef5cb4e hrtimer: Mark index and clockid of clock base as const
These fields are initialized once and are never supposed to change.

Mark them as const to make this explicit.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-10-095357392669@linutronix.de
2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)
bd803783df hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event
This pointer indirection is a remnant from when ktime_t was a struct,
today it is pointless.

Drop the pointer indirection.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-9-095357392669@linutronix.de
2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)
b94c076dd9 hrtimer: Drop spurious space in 'enum hrtimer_base_type'
This spurious space makes grepping for the enum definition annoying.

Remove it.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-8-095357392669@linutronix.de
2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)
194675f16d hrtimer: Don't zero-initialize ret in hrtimer_nanosleep()
The value will be assigned to before any usage.
No other function in hrtimer.c does such a zero-initialization.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-7-095357392669@linutronix.de
2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)
8ef2807042 hrtimer: Remove hrtimer_get_expires_ns()
There are no users left.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-6-095357392669@linutronix.de
2026-03-12 12:15:54 +01:00
Thomas Weißschuh (Schneider Electric)
112c685f02 timekeeping: Mark offsets array as const
Neither the array nor the offsets it is pointing to are meant to be
changed through the array.

Mark both the array and the values it points to as const.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-5-095357392669@linutronix.de
2026-03-12 12:15:54 +01:00
Thomas Weißschuh (Schneider Electric)
ba546d3d89 timekeeping/auxclock: Consistently use raw timekeeper for tk_setup_internals()
In aux_clock_enable() the clocksource from tkr_raw is used to call
tk_setup_internals(). Do the same in tk_aux_update_clocksource().  While
the clocksources will be the same in any case, this is less confusing.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-4-095357392669@linutronix.de
2026-03-12 12:15:54 +01:00
Thomas Weißschuh (Schneider Electric)
bb2705b4e0 timer_list: Print offset as signed integer
The offset of a hrtimer base may be negative.

Print those values correctly.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-3-095357392669@linutronix.de
2026-03-12 12:15:54 +01:00
Thomas Weißschuh (Schneider Electric)
754e38d2d1 tracing: Use explicit array size instead of sentinel elements in symbol printing
The sentinel value added by the wrapper macros __print_symbolic() et al
prevents the callers from adding their own trailing comma. This makes
constructing symbol list dynamically based on kconfig values tedious.

Drop the sentinel elements, so callers can either specify the trailing
comma or not, just like in regular array initializers.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-2-095357392669@linutronix.de
2026-03-12 12:15:53 +01:00
Thomas Weißschuh (Schneider Electric)
5aa9383813 scripts/gdb: timerlist: Adapt to move of tk_core
tk_core is a macro today which cannot be resolved by gdb.

Use the correct symbol expression to reference tk_core.

Fixes: 22c62b9a84 ("timekeeping: Introduce auxiliary timekeepers")
Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-1-095357392669@linutronix.de
2026-03-12 12:15:53 +01:00
Paolo Abeni
52e4d5da6d Merge branch 'net-hinic3-pf-initialization'
Fan Gong says:

====================
net: hinic3: PF initialization

This is [2/3] part of hinic3 Ethernet driver second submission.
With this patch hinic3 becomes a complete Ethernet driver with
pf and vf.

Add cmdq detailed-response interfaces.
Add dump interfaces for cmdq, aeq, ceq and mailbox.
Add msg_send_lock for message sending concurrency.
Add PF device support and chip_present_flag to check cards.
Add rx vlan offload support.
Add PF FLR wait and timeout handling.
Add 5 ethtool ops for information of driver and link.

v1: https://lore.kernel.org/netdev/cover.1771916043.git.zhuyikai1@h-partners.com/
v2: https://lore.kernel.org/netdev/cover.1772697509.git.zhuyikai1@h-partners.com/
====================

Link: https://patch.msgid.link/cover.1773062356.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 12:13:50 +01:00
Fan Gong
00608d02dd hinic3: Add ethtool basic ops
Implement following ethtool callback function:
.get_link_ksettings
.get_drvinfo
.get_msglevel
.set_msglevel
.get_link

  These callbacks allow users to utilize ethtool for detailed
network configuration and monitoring.

Co-developed-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Fan Gong <gongfan1@huawei.com>
Link: https://patch.msgid.link/b56d490c2a06cae9541a0297d76b11d869f37161.1773062356.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 12:13:48 +01:00
Fan Gong
330adcedd0 hinic3: Add PF/VF capability parsing and parameter validation
Add the ability to parse PF and VF capabilities and validate
related parameters(SQ & RQ).

Co-developed-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Fan Gong <gongfan1@huawei.com>
Link: https://patch.msgid.link/ac4733f2c0409bb778b4624ed1632dcb2ded6632.1773062356.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 12:13:48 +01:00
Fan Gong
33cf53672b hinic3: Add PF FLR wait and timeout handling
Add a mechanism for PF to wait for the completion of FLR, ensuring
hardware state consistency after an FLR event.

Co-developed-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Fan Gong <gongfan1@huawei.com>
Link: https://patch.msgid.link/7a1b21426fd4274831733aca962eb209b806f4bd.1773062356.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-12 12:13:48 +01:00