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1,412,004 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Thomas Zimmermann
|
8d39832496 |
powerpc/powermac: backlight: Include <linux/of.h>
Include <linux/of.h> to avoid dependency on backlight header to include
it. Declares of_find_node_by_name(), of_property_match_string() and
of_node_put().
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes:
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Ingo Molnar
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24bc5ea5c0 |
seqlock, procfs: Match scoped_seqlock_read() critical section vs. RCU ordering in do_task_stat() to do_io_accounting()
There's two patterns of taking the RCU read-lock and the
sig->stats_lock read-seqlock in do_task_stat() and
do_io_accounting(), with a different ordering:
# do_io_accounting():
guard(rcu)();
scoped_seqlock_read (&sig->stats_lock, ss_lock_irqsave) {
# do_task_stat():
scoped_seqlock_read (&sig->stats_lock, ss_lock_irqsave) {
...
rcu_read_lock();
The ordering is RCU-read+seqlock_read in the first
case, seqlock_read+RCU-read in the second case.
While technically these read locks can be taken in any order,
nevertheless it's good practice to use the more intrusive lock
on the inside (which is the IRQs-off section in this case),
and reduces head-scratching during review when done consistently,
so let's use the do_io_accounting() pattern in do_task_stat().
This will also reduce irqs-off latencies in do_task_stat() a tiny bit.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: https://patch.msgid.link/aS6rwnaPbHFCdHp1@gmail.com
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Niklas Cassel
|
2e98327136 |
ata: libata-core: Quirk DELLBOSS VD max_sectors
Commit |
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Niklas Cassel
|
a42b71d499 |
ata: libata: Move quirk flags to their own enum
The anonymous enum in include/linux/libata.h that is used to store various global constants can currently be backed by type int. (It contains both negative and positive constants.) __ATA_QUIRK_MAX is currently 31. The quirk flags in the various global constants enum are defined as "1U << quirk_flag_bit". Thus if we simply add an additional quirk, the quirk flag will be 1 << 31, which is a value that is too large to be represented by a signed int. The various global constants enum will thus therefore be backed by type long. This will lead to error prints like e.g.: ata_port_err(ap, "EH pending after %d tries, giving up\n", ATA_EH_MAX_TRIES); now failing to build, with build error: error: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long int’ [-Werror=format=] This is because all constants in the various global constants enum now has to be printed as a long, as that is now the backing type of the enum. Since the compiler will use the smallest possible backing type for an enum, it is good practice to not mix unrelated things in a single enum. Move the quirk flags to a separate enum, so that we don't need to change the printf specifier for all other constants in the "various global constants" enum when adding an additional quirk. Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Niklas Cassel <cassel@kernel.org> |
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Aaron Thompson
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d3666c1f8a |
debugfs: Fix default access mode config check
This typo caused debugfs to always behave as if
CONFIG_DEBUG_FS_ALLOW_NONE was selected.
Fixes:
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Dave Airlie
|
b3239df349 |
Extra drm-misc-next for v6.19-rc1:
UAPI Changes: - Add support for drm colorop pipeline. - Add COLOR PIPELINE plane property. - Add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE. Cross-subsystem Changes: - Attempt to use higher order mappings in system heap allocator. - Always taint kernel with sw-sync. Core Changes: - Small fixes to drm/gem. - Support emergency restore to drm-client. - Allocate and release fb_info in single place. - Rework ttm pipelined eviction fence handling. Driver Changes: - Support the drm color pipeline in vkms, amdgfx. - Add NVJPG driver for tegra. - Assorted small fixes and updates to rockchip, bridge/dw-hdmi-qp, panthor. - Add ASL CS5263 DP-to-HDMI simple bridge. - Add and improve support for G LD070WX3-SL01 MIPI DSI, Samsung LTL106AL0, Samsung LTL106AL01, Raystar RFF500F-AWH-DNN, Winstar WF70A8SYJHLNGA, Wanchanglong w552946aaa, Samsung SOFEF00, Lenovo X13s panel. - Add support for it66122 to it66121. - Support mali-G1 gpu in panthor. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAmkuEAsACgkQ/lWMcqZw E8Oqtw//fJqWXjhzobnffWEM7pbkWUjau83R+tqg/dwyLP7paSfPg8VEnesAjZoW TWlaYY7v3o0VYH1p533li/ImXcK1AkaCHyx0SfIBnEgR2X27KS1TvVy/iMDGBE50 i609Skw/UjetDFojozG63NxkannlKCy5mL+WzCpqxg3FakRyrqvy20UZgQQrDtAJ v7etdikmfZz01+8WclvdprsJ+y391hhFM4FYYh6UDo5t/QQluMW7f3YiwAxUF3/9 zuyRJD9ckIGsZ9Y0FxBwH/m25/SeTyW36ERrWOsgVlO3FzAOc7W9AukkgXO9orMu OAxheo0HYTlYonM1yitrgKJsXa7PdjxHL5ZwdPDSJWBjTw3b3xIWgJINc9k2SHKc OWoPOg54JDY5Yte17qF5od0MMmk5iG2YxHFMnQAQZ7nFOL+m8H7nwHzbbsu0iepP FOsly0Hr2UJY29QKHJPfS5pfiB5UJeezYnVDgZBzCrBZK/svpbpfb0KolNYZIHji qfEZ0o4RmkY0lwGYQ467Ow2NmIZIKmGgDiqbFZ5KoFo1tLE9UX3KDJY1hZg1X3w8 sH2tEwCh3JGYsfBmEs4xe+iWElKe+0yrX08LpljpV3v0yzULKMC36qb1Wr9xJMBO gmWFwCvzevpawotAc4OyqRWWP/ncyxuNSb3gd50Q/D/4UPUxo3I= =QBjM -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2025-12-01-1' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next Extra drm-misc-next for v6.19-rc1: UAPI Changes: - Add support for drm colorop pipeline. - Add COLOR PIPELINE plane property. - Add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE. Cross-subsystem Changes: - Attempt to use higher order mappings in system heap allocator. - Always taint kernel with sw-sync. Core Changes: - Small fixes to drm/gem. - Support emergency restore to drm-client. - Allocate and release fb_info in single place. - Rework ttm pipelined eviction fence handling. Driver Changes: - Support the drm color pipeline in vkms, amdgfx. - Add NVJPG driver for tegra. - Assorted small fixes and updates to rockchip, bridge/dw-hdmi-qp, panthor. - Add ASL CS5263 DP-to-HDMI simple bridge. - Add and improve support for G LD070WX3-SL01 MIPI DSI, Samsung LTL106AL0, Samsung LTL106AL01, Raystar RFF500F-AWH-DNN, Winstar WF70A8SYJHLNGA, Wanchanglong w552946aaa, Samsung SOFEF00, Lenovo X13s panel. - Add support for it66122 to it66121. - Support mali-G1 gpu in panthor. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patch.msgid.link/aa5cbd50-7676-4a59-bbed-e8428af86804@linux.intel.com |
||
Takashi Iwai
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cf5425e207 |
ALSA: usb-audio: Simplify with usb_endpoint_max_periodic_payload()
Recently we received a new helper function,
usb_endpoint_max_periodic_payload(), for calculating the max packet
size for periodic transfer.
Simplify the former open code with the new helper function.
Fixes:
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Chris Chiu
|
a30fa81222 |
ALSA: hda/realtek: fix mute/micmute LEDs don't work for more HP laptops
More HP laptops with codec ALC3247 need the extra coefbit2 to make mic-mute/audio-mute working. Signed-off-by: Chris Chiu <chris.chiu@canonical.com> Link: https://patch.msgid.link/20251202042534.174755-1-chris.chiu@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de> |
||
Nam Cao
|
b30f635bb6 |
rv: Convert to use __free
Convert to use __free to tidy up the code. Signed-off-by: Nam Cao <namcao@linutronix.de> Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Link: https://lore.kernel.org/r/62854e2fcb8f8dd2180a98a9700702dcf89a6980.1763370183.git.namcao@linutronix.de Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> |
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Nam Cao
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8db3790c4d |
rv: Convert to use lock guard
Convert to use lock guard to tidy up the code. Signed-off-by: Nam Cao <namcao@linutronix.de> Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Link: https://lore.kernel.org/r/dbefeb868093c40d4b29fd6b57294a6aa011b719.1763370183.git.namcao@linutronix.de Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> |
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Takashi Iwai
|
9747b22a41 |
ASoC: Updates for v6.19
This is a very large set of updates, as well as some more extensive
cleanup work from Morimto-san we've also added a generic SCDA class
driver for SoundWire devices enabling us to support many chips with
no custom code. There's also a batch of new drivers added for both
SoCs and CODECs.
- Added a SoundWire SCDA generic class driver, pulling in a little
regmap work to support it.
- A *lot* of cleaup and API improvement work from Morimoto-san.
- Lots of work on the existing Cirrus, Intel, Maxim and Qualcomm
drivers.
- Support for Allwinner A523, Mediatek MT8189, Qualcomm QCM2290,
QRB2210 and SM6115, SpacemiT K1, and TI TAS2568, TAS5802, TAS5806,
TAS5815, TAS5828 and TAS5830.
This also pulls in some gpiolib changes supporting shared GPIOs in the
core there so we can convert some of the ASoC drivers open coding
handling of that to the core functionality.
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Merge tag 'asoc-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v6.19
This is a very large set of updates, as well as some more extensive
cleanup work from Morimto-san we've also added a generic SCDA class
driver for SoundWire devices enabling us to support many chips with
no custom code. There's also a batch of new drivers added for both
SoCs and CODECs.
- Added a SoundWire SCDA generic class driver, pulling in a little
regmap work to support it.
- A *lot* of cleaup and API improvement work from Morimoto-san.
- Lots of work on the existing Cirrus, Intel, Maxim and Qualcomm
drivers.
- Support for Allwinner A523, Mediatek MT8189, Qualcomm QCM2290,
QRB2210 and SM6115, SpacemiT K1, and TI TAS2568, TAS5802, TAS5806,
TAS5815, TAS5828 and TAS5830.
This also pulls in some gpiolib changes supporting shared GPIOs in the
core there so we can convert some of the ASoC drivers open coding
handling of that to the core functionality.
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Linus Torvalds
|
4a26e7032d |
Core kernel bug handling infrastructure changes for v6.19:
- Improve WARN(), which has vararg printf like arguments,
to work with the x86 #UD based WARN-optimizing infrastructure
by hiding the format in the bug_table and replacing this
first argument with the address of the bug-table entry,
while making the actual function that's called a UD1 instruction.
(Peter Zijlstra)
- Introduce the CONFIG_DEBUG_BUGVERBOSE_DETAILED Kconfig switch
(Ingo Molnar, s390 support by Heiko Carstens)
Fixes and cleanups:
- bugs/s390: Remove private WARN_ON() implementation (Heiko Carstens)
- <asm/bugs.h>: Make i386 use GENERIC_BUG_RELATIVE_POINTERS
(Peter Zijlstra)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'core-bugs-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull bug handling infrastructure updates from Ingo Molnar:
"Core updates:
- Improve WARN(), which has vararg printf like arguments, to work
with the x86 #UD based WARN-optimizing infrastructure by hiding the
format in the bug_table and replacing this first argument with the
address of the bug-table entry, while making the actual function
that's called a UD1 instruction (Peter Zijlstra)
- Introduce the CONFIG_DEBUG_BUGVERBOSE_DETAILED Kconfig switch (Ingo
Molnar, s390 support by Heiko Carstens)
Fixes and cleanups:
- bugs/s390: Remove private WARN_ON() implementation (Heiko Carstens)
- <asm/bugs.h>: Make i386 use GENERIC_BUG_RELATIVE_POINTERS (Peter
Zijlstra)"
* tag 'core-bugs-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
x86/bugs: Make i386 use GENERIC_BUG_RELATIVE_POINTERS
x86/bug: Fix BUG_FORMAT vs KASLR
x86_64/bug: Inline the UD1
x86/bug: Implement WARN_ONCE()
x86_64/bug: Implement __WARN_printf()
x86/bug: Use BUG_FORMAT for DEBUG_BUGVERBOSE_DETAILED
x86/bug: Add BUG_FORMAT basics
bug: Allow architectures to provide __WARN_printf()
bug: Implement WARN_ON() using __WARN_FLAGS()
bug: Add report_bug_entry()
bug: Add BUG_FORMAT_ARGS infrastructure
bug: Clean up CONFIG_GENERIC_BUG_RELATIVE_POINTERS
bug: Add BUG_FORMAT infrastructure
x86: Rework __bug_table helpers
bugs/s390: Remove private WARN_ON() implementation
bugs/core: Reorganize fields in the first line of WARNING output, add ->comm[] output
bugs/sh: Concatenate 'cond_str' with '__FILE__' in __WARN_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/parisc: Concatenate 'cond_str' with '__FILE__' in __WARN_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/riscv: Concatenate 'cond_str' with '__FILE__' in __BUG_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/riscv: Pass in 'cond_str' to __BUG_FLAGS()
...
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Linus Torvalds
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dcd8637edb |
Core x86 changes for v6.19:
- x86/alternatives: Drop unnecessary test after call to
alt_replace_call() (Juergen Gross)
- x86/dumpstack: Prevent KASAN false positive warnings in
__show_regs() (Tengda Wu)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
- x86/alternatives: Drop unnecessary test after call to
alt_replace_call() (Juergen Gross)
- x86/dumpstack: Prevent KASAN false positive warnings in
__show_regs() (Tengda Wu)
* tag 'x86-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/dumpstack: Prevent KASAN false positive warnings in __show_regs()
x86/alternative: Drop not needed test after call of alt_replace_call()
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Linus Torvalds
|
e7d81c1ed6 |
A single fix for an ancient prototype in the math-emu code, by Arnd Bergmann.
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||
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Linus Torvalds
|
de2f75d55e |
x86/apic changes for v6.19:
- x86/apic: Fix the frequency in apic=verbose log output (Julian Stecklina) - Simplify mp_irqdomain_alloc() slightly (Christophe JAILLET) Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmktePURHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iIsQ//ZGocltNkF7GrYytJbLTactwvj/w1C9ly ejEh0enSVibyvc+ADkEwFBPIXqQDo9KssYlwTZmgI3SSv1nohMch7CWPQ87Rnajo NxzWueS4q5Yp/IRVAiwXME7cYmJ2MtGxRk+gyq8RSFoV2gVOmPkFlWX0DZzDv5Oi Z0OPM2sTlw+hrFKd0DoG5PySaYhVooYfKynXCFFwn8KrRNYuEfQwA4wZFesn2+u2 xwKaAKricpePG2/th3DdcBRUhkVZliVIUitbBUW5Ya9LsDeYkaq5+vLmywWEQC1q WCY8J3ptlH02E9xVoNA0M3lPhx5XPCcYQvSkgIobDE4d41e8yAj7Rgx1l5opNK6b KRMcsL9eBRMDbFSY0x6YA17XTz0yCN49BtiCx8hTGhPhBNyWICw5n8t1k5kTH9XQ Aj3oGSdtBstJIZjM4biPC5sP8HPXNn/QCHwMXBZEWG5IbyjbEFWGQvd3w2cNTuBd nMxaovs7eo+Q9ftbVlVJFhIgq9wEUUG9rTm7KLdqjglolhn7WzC/T7iVw+o8X9OX 3IZRYimbfoP90vgqROVQiRjPxMj7t2F8Y11Bf4jIizTeSSCZQhrXQjZdUX1JNY3F T2Yhk8AXBaUEgf7kZlwzy+jco0Sd60MWHD18k1Ouot/RONgAbmkTn2BIXD/CkkkP UjiPoILd1kg= =RTrX -----END PGP SIGNATURE----- Merge tag 'x86-apic-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 apic updates from Ingo Molnar: - x86/apic: Fix the frequency in apic=verbose log output (Julian Stecklina) - Simplify mp_irqdomain_alloc() slightly (Christophe JAILLET) * tag 'x86-apic-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Fix frequency in apic=verbose log output x86/ioapic: Simplify mp_irqdomain_alloc() slightly |
||
|
Linus Torvalds
|
6d2c10e889 |
Scheduler changes for v6.19:
Scalability and load-balancing improvements:
- Enable scheduler feature NEXT_BUDDY (Mel Gorman)
- Reimplement NEXT_BUDDY to align with EEVDF goals (Mel Gorman)
- Skip sched_balance_running cmpxchg when balance is not due (Tim Chen)
- Implement generic code for architecture specific sched domain
NUMA distances (Tim Chen)
- Optimize the NUMA distances of the sched-domains builds of Intel
Granite Rapids (GNR) and Clearwater Forest (CWF) platforms
(Tim Chen)
- Implement proportional newidle balance: a randomized algorithm
that runs newidle balancing proportional to its success rate.
(Peter Zijlstra)
Scheduler infrastructure changes:
- Implement the 'sched_change' scoped_guard() pattern for
the entire scheduler (Peter Zijlstra)
- More broadly utilize the sched_change guard (Peter Zijlstra)
- Add support to pick functions to take runqueue-flags (Joel Fernandes)
- Provide and use set_need_resched_current() (Peter Zijlstra)
Fair scheduling enhancements:
- Forfeit vruntime on yield (Fernand Sieber)
- Only update stats for allowed CPUs when looking for dst group (Adam Li)
CPU-core scheduling enhancements:
- Optimize core cookie matching check (Fernand Sieber)
Deadline scheduler fixes:
- Only set free_cpus for online runqueues (Doug Berger)
- Fix dl_server time accounting (Peter Zijlstra)
- Fix dl_server stop condition (Peter Zijlstra)
Proxy scheduling fixes:
- Yield the donor task (Fernand Sieber)
Fixes and cleanups:
- Fix do_set_cpus_allowed() locking (Peter Zijlstra)
- Fix migrate_disable_switch() locking (Peter Zijlstra)
- Remove double update_rq_clock() in __set_cpus_allowed_ptr_locked() (Hao Jia)
- Increase sched_tick_remote timeout (Phil Auld)
- sched/deadline: Use cpumask_weight_and() in dl_bw_cpus() (Shrikanth Hegde)
- sched/deadline: Clean up select_task_rq_dl() (Shrikanth Hegde)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scalability and load-balancing improvements:
- Enable scheduler feature NEXT_BUDDY (Mel Gorman)
- Reimplement NEXT_BUDDY to align with EEVDF goals (Mel Gorman)
- Skip sched_balance_running cmpxchg when balance is not due (Tim
Chen)
- Implement generic code for architecture specific sched domain NUMA
distances (Tim Chen)
- Optimize the NUMA distances of the sched-domains builds of Intel
Granite Rapids (GNR) and Clearwater Forest (CWF) platforms (Tim
Chen)
- Implement proportional newidle balance: a randomized algorithm that
runs newidle balancing proportional to its success rate. (Peter
Zijlstra)
Scheduler infrastructure changes:
- Implement the 'sched_change' scoped_guard() pattern for the entire
scheduler (Peter Zijlstra)
- More broadly utilize the sched_change guard (Peter Zijlstra)
- Add support to pick functions to take runqueue-flags (Joel
Fernandes)
- Provide and use set_need_resched_current() (Peter Zijlstra)
Fair scheduling enhancements:
- Forfeit vruntime on yield (Fernand Sieber)
- Only update stats for allowed CPUs when looking for dst group (Adam
Li)
CPU-core scheduling enhancements:
- Optimize core cookie matching check (Fernand Sieber)
Deadline scheduler fixes:
- Only set free_cpus for online runqueues (Doug Berger)
- Fix dl_server time accounting (Peter Zijlstra)
- Fix dl_server stop condition (Peter Zijlstra)
Proxy scheduling fixes:
- Yield the donor task (Fernand Sieber)
Fixes and cleanups:
- Fix do_set_cpus_allowed() locking (Peter Zijlstra)
- Fix migrate_disable_switch() locking (Peter Zijlstra)
- Remove double update_rq_clock() in __set_cpus_allowed_ptr_locked()
(Hao Jia)
- Increase sched_tick_remote timeout (Phil Auld)
- sched/deadline: Use cpumask_weight_and() in dl_bw_cpus() (Shrikanth
Hegde)
- sched/deadline: Clean up select_task_rq_dl() (Shrikanth Hegde)"
* tag 'sched-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
sched: Provide and use set_need_resched_current()
sched/fair: Proportional newidle balance
sched/fair: Small cleanup to update_newidle_cost()
sched/fair: Small cleanup to sched_balance_newidle()
sched/fair: Revert max_newidle_lb_cost bump
sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals
sched/fair: Enable scheduler feature NEXT_BUDDY
sched: Increase sched_tick_remote timeout
sched/fair: Have SD_SERIALIZE affect newidle balancing
sched/fair: Skip sched_balance_running cmpxchg when balance is not due
sched/deadline: Minor cleanup in select_task_rq_dl()
sched/deadline: Use cpumask_weight_and() in dl_bw_cpus
sched/deadline: Document dl_server
sched/deadline: Fix dl_server stop condition
sched/deadline: Fix dl_server time accounting
sched/core: Remove double update_rq_clock() in __set_cpus_allowed_ptr_locked()
sched/eevdf: Fix min_vruntime vs avg_vruntime
sched/core: Add comment explaining force-idle vruntime snapshots
sched/core: Optimize core cookie matching check
sched/proxy: Yield the donor task
...
|
||
|
Linus Torvalds
|
6c26fbe8c9 |
Performance events changes for v6.19:
Callchain support:
- Add support for deferred user-space stack unwinding for
perf, enabled on x86. (Peter Zijlstra, Steven Rostedt)
- unwind_user/x86: Enable frame pointer unwinding on x86
(Josh Poimboeuf)
x86 PMU support and infrastructure:
- x86/insn: Simplify for_each_insn_prefix() (Peter Zijlstra)
- x86/insn,uprobes,alternative: Unify insn_is_nop()
(Peter Zijlstra)
Intel PMU driver:
- Large series to prepare for and implement architectural PEBS
support for Intel platforms such as Clearwater Forest (CWF)
and Panther Lake (PTL). (Dapeng Mi, Kan Liang)
- Check dynamic constraints (Kan Liang)
- Optimize PEBS extended config (Peter Zijlstra)
- cstates: Remove PC3 support from LunarLake (Zhang Rui)
- cstates: Add Pantherlake support (Zhang Rui)
- cstates: Clearwater Forest support (Zide Chen)
AMD PMU driver:
- x86/amd: Check event before enable to avoid GPF (George Kennedy)
Fixes and cleanups:
- task_work: Fix NMI race condition (Peter Zijlstra)
- perf/x86: Fix NULL event access and potential PEBS record loss
(Dapeng Mi)
- Misc other fixes and cleanups.
(Dapeng Mi, Ingo Molnar, Peter Zijlstra)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Callchain support:
- Add support for deferred user-space stack unwinding for perf,
enabled on x86. (Peter Zijlstra, Steven Rostedt)
- unwind_user/x86: Enable frame pointer unwinding on x86 (Josh
Poimboeuf)
x86 PMU support and infrastructure:
- x86/insn: Simplify for_each_insn_prefix() (Peter Zijlstra)
- x86/insn,uprobes,alternative: Unify insn_is_nop() (Peter Zijlstra)
Intel PMU driver:
- Large series to prepare for and implement architectural PEBS
support for Intel platforms such as Clearwater Forest (CWF) and
Panther Lake (PTL). (Dapeng Mi, Kan Liang)
- Check dynamic constraints (Kan Liang)
- Optimize PEBS extended config (Peter Zijlstra)
- cstates:
- Remove PC3 support from LunarLake (Zhang Rui)
- Add Pantherlake support (Zhang Rui)
- Clearwater Forest support (Zide Chen)
AMD PMU driver:
- x86/amd: Check event before enable to avoid GPF (George Kennedy)
Fixes and cleanups:
- task_work: Fix NMI race condition (Peter Zijlstra)
- perf/x86: Fix NULL event access and potential PEBS record loss
(Dapeng Mi)
- Misc other fixes and cleanups (Dapeng Mi, Ingo Molnar, Peter
Zijlstra)"
* tag 'perf-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
perf/x86/intel: Fix and clean up intel_pmu_drain_arch_pebs() type use
perf/x86/intel: Optimize PEBS extended config
perf/x86/intel: Check PEBS dyn_constraints
perf/x86/intel: Add a check for dynamic constraints
perf/x86/intel: Add counter group support for arch-PEBS
perf/x86/intel: Setup PEBS data configuration and enable legacy groups
perf/x86/intel: Update dyn_constraint base on PEBS event precise level
perf/x86/intel: Allocate arch-PEBS buffer and initialize PEBS_BASE MSR
perf/x86/intel: Process arch-PEBS records or record fragments
perf/x86/intel/ds: Factor out PEBS group processing code to functions
perf/x86/intel/ds: Factor out PEBS record processing code to functions
perf/x86/intel: Initialize architectural PEBS
perf/x86/intel: Correct large PEBS flag check
perf/x86/intel: Replace x86_pmu.drain_pebs calling with static call
perf/x86: Fix NULL event access and potential PEBS record loss
perf/x86: Remove redundant is_x86_event() prototype
entry,unwind/deferred: Fix unwind_reset_info() placement
unwind_user/x86: Fix arch=um build
perf: Support deferred user unwind
unwind_user/x86: Teach FP unwind about start of function
...
|
||
Jakub Kicinski
|
31a3ed492d |
WireGuard updates for Linux 6.19-rc1.
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||
|
Linus Torvalds
|
63e6995005 |
objtool updates for v6.19:
- klp-build livepatch module generation (Josh Poimboeuf)
Introduce new objtool features and a klp-build
script to generate livepatch modules using a
source .patch as input.
This builds on concepts from the longstanding out-of-tree
kpatch project which began in 2012 and has been used for
many years to generate livepatch modules for production kernels.
However, this is a complete rewrite which incorporates
hard-earned lessons from 12+ years of maintaining kpatch.
Key improvements compared to kpatch-build:
- Integrated with objtool: Leverages objtool's existing control-flow
graph analysis to help detect changed functions.
- Works on vmlinux.o: Supports late-linked objects, making it
compatible with LTO, IBT, and similar.
- Simplified code base: ~3k fewer lines of code.
- Upstream: No more out-of-tree #ifdef hacks, far less cruft.
- Cleaner internals: Vastly simplified logic for symbol/section/reloc
inclusion and special section extraction.
- Robust __LINE__ macro handling: Avoids false positive binary diffs
caused by the __LINE__ macro by introducing a fix-patch-lines script
which injects #line directives into the source .patch to preserve
the original line numbers at compile time.
- Disassemble code with libopcodes instead of running objdump
(Alexandre Chartre)
- Disassemble support (-d option to objtool) by Alexandre Chartre,
which supports the decoding of various Linux kernel code generation
specials such as alternatives:
17ef: sched_balance_find_dst_group+0x62f mov 0x34(%r9),%edx
17f3: sched_balance_find_dst_group+0x633 | <alternative.17f3> | X86_FEATURE_POPCNT
17f3: sched_balance_find_dst_group+0x633 | call 0x17f8 <__sw_hweight64> | popcnt %rdi,%rax
17f8: sched_balance_find_dst_group+0x638 cmp %eax,%edx
... jump table alternatives:
1895: sched_use_asym_prio+0x5 test $0x8,%ch
1898: sched_use_asym_prio+0x8 je 0x18a9 <sched_use_asym_prio+0x19>
189a: sched_use_asym_prio+0xa | <jump_table.189a> | JUMP
189a: sched_use_asym_prio+0xa | jmp 0x18ae <sched_use_asym_prio+0x1e> | nop2
189c: sched_use_asym_prio+0xc mov $0x1,%eax
18a1: sched_use_asym_prio+0x11 and $0x80,%ecx
... exception table alternatives:
native_read_msr:
5b80: native_read_msr+0x0 mov %edi,%ecx
5b82: native_read_msr+0x2 | <ex_table.5b82> | EXCEPTION
5b82: native_read_msr+0x2 | rdmsr | resume at 0x5b84 <native_read_msr+0x4>
5b84: native_read_msr+0x4 shl $0x20,%rdx
.... x86 feature flag decoding (also see the X86_FEATURE_POPCNT
example in sched_balance_find_dst_group() above):
2faaf: start_thread_common.constprop.0+0x1f jne 0x2fba4 <start_thread_common.constprop.0+0x114>
2fab5: start_thread_common.constprop.0+0x25 | <alternative.2fab5> | X86_FEATURE_ALWAYS | X86_BUG_NULL_SEG
2fab5: start_thread_common.constprop.0+0x25 | jmp 0x2faba <.altinstr_aux+0x2f4> | jmp 0x4b0 <start_thread_common.constprop.0+0x3f> | nop5
2faba: start_thread_common.constprop.0+0x2a mov $0x2b,%eax
... NOP sequence shortening:
1048e2: snapshot_write_finalize+0xc2 je 0x104917 <snapshot_write_finalize+0xf7>
1048e4: snapshot_write_finalize+0xc4 nop6
1048ea: snapshot_write_finalize+0xca nop11
1048f5: snapshot_write_finalize+0xd5 nop11
104900: snapshot_write_finalize+0xe0 mov %rax,%rcx
104903: snapshot_write_finalize+0xe3 mov 0x10(%rdx),%rax
... and much more.
- Function validation tracing support (Alexandre Chartre)
- Various -ffunction-sections fixes (Josh Poimboeuf)
- Clang AutoFDO (Automated Feedback-Directed Optimizations) support (Josh Poimboeuf)
- Misc fixes and cleanups (Borislav Petkov, Chen Ni,
Dylan Hatch, Ingo Molnar, John Wang, Josh Poimboeuf,
Pankaj Raghav, Peter Zijlstra, Thorsten Blum)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- klp-build livepatch module generation (Josh Poimboeuf)
Introduce new objtool features and a klp-build script to generate
livepatch modules using a source .patch as input.
This builds on concepts from the longstanding out-of-tree kpatch
project which began in 2012 and has been used for many years to
generate livepatch modules for production kernels. However, this is a
complete rewrite which incorporates hard-earned lessons from 12+
years of maintaining kpatch.
Key improvements compared to kpatch-build:
- Integrated with objtool: Leverages objtool's existing control-flow
graph analysis to help detect changed functions.
- Works on vmlinux.o: Supports late-linked objects, making it
compatible with LTO, IBT, and similar.
- Simplified code base: ~3k fewer lines of code.
- Upstream: No more out-of-tree #ifdef hacks, far less cruft.
- Cleaner internals: Vastly simplified logic for
symbol/section/reloc inclusion and special section extraction.
- Robust __LINE__ macro handling: Avoids false positive binary diffs
caused by the __LINE__ macro by introducing a fix-patch-lines
script which injects #line directives into the source .patch to
preserve the original line numbers at compile time.
- Disassemble code with libopcodes instead of running objdump
(Alexandre Chartre)
- Disassemble support (-d option to objtool) by Alexandre Chartre,
which supports the decoding of various Linux kernel code generation
specials such as alternatives:
17ef: sched_balance_find_dst_group+0x62f mov 0x34(%r9),%edx
17f3: sched_balance_find_dst_group+0x633 | <alternative.17f3> | X86_FEATURE_POPCNT
17f3: sched_balance_find_dst_group+0x633 | call 0x17f8 <__sw_hweight64> | popcnt %rdi,%rax
17f8: sched_balance_find_dst_group+0x638 cmp %eax,%edx
... jump table alternatives:
1895: sched_use_asym_prio+0x5 test $0x8,%ch
1898: sched_use_asym_prio+0x8 je 0x18a9 <sched_use_asym_prio+0x19>
189a: sched_use_asym_prio+0xa | <jump_table.189a> | JUMP
189a: sched_use_asym_prio+0xa | jmp 0x18ae <sched_use_asym_prio+0x1e> | nop2
189c: sched_use_asym_prio+0xc mov $0x1,%eax
18a1: sched_use_asym_prio+0x11 and $0x80,%ecx
... exception table alternatives:
native_read_msr:
5b80: native_read_msr+0x0 mov %edi,%ecx
5b82: native_read_msr+0x2 | <ex_table.5b82> | EXCEPTION
5b82: native_read_msr+0x2 | rdmsr | resume at 0x5b84 <native_read_msr+0x4>
5b84: native_read_msr+0x4 shl $0x20,%rdx
.... x86 feature flag decoding (also see the X86_FEATURE_POPCNT
example in sched_balance_find_dst_group() above):
2faaf: start_thread_common.constprop.0+0x1f jne 0x2fba4 <start_thread_common.constprop.0+0x114>
2fab5: start_thread_common.constprop.0+0x25 | <alternative.2fab5> | X86_FEATURE_ALWAYS | X86_BUG_NULL_SEG
2fab5: start_thread_common.constprop.0+0x25 | jmp 0x2faba <.altinstr_aux+0x2f4> | jmp 0x4b0 <start_thread_common.constprop.0+0x3f> | nop5
2faba: start_thread_common.constprop.0+0x2a mov $0x2b,%eax
... NOP sequence shortening:
1048e2: snapshot_write_finalize+0xc2 je 0x104917 <snapshot_write_finalize+0xf7>
1048e4: snapshot_write_finalize+0xc4 nop6
1048ea: snapshot_write_finalize+0xca nop11
1048f5: snapshot_write_finalize+0xd5 nop11
104900: snapshot_write_finalize+0xe0 mov %rax,%rcx
104903: snapshot_write_finalize+0xe3 mov 0x10(%rdx),%rax
... and much more.
- Function validation tracing support (Alexandre Chartre)
- Various -ffunction-sections fixes (Josh Poimboeuf)
- Clang AutoFDO (Automated Feedback-Directed Optimizations) support
(Josh Poimboeuf)
- Misc fixes and cleanups (Borislav Petkov, Chen Ni, Dylan Hatch, Ingo
Molnar, John Wang, Josh Poimboeuf, Pankaj Raghav, Peter Zijlstra,
Thorsten Blum)
* tag 'objtool-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
objtool: Fix segfault on unknown alternatives
objtool: Build with disassembly can fail when including bdf.h
objtool: Trim trailing NOPs in alternative
objtool: Add wide output for disassembly
objtool: Compact output for alternatives with one instruction
objtool: Improve naming of group alternatives
objtool: Add Function to get the name of a CPU feature
objtool: Provide access to feature and flags of group alternatives
objtool: Fix address references in alternatives
objtool: Disassemble jump table alternatives
objtool: Disassemble exception table alternatives
objtool: Print addresses with alternative instructions
objtool: Disassemble group alternatives
objtool: Print headers for alternatives
objtool: Preserve alternatives order
objtool: Add the --disas=<function-pattern> action
objtool: Do not validate IBT for .return_sites and .call_sites
objtool: Improve tracing of alternative instructions
objtool: Add functions to better name alternatives
objtool: Identify the different types of alternatives
...
|
||
|
Linus Torvalds
|
b53440f8e5 |
Locking updates for v6.19:
Mutexes:
- Redo __mutex_init() to reduce generated code size
(Sebastian Andrzej Siewior)
Seqlocks:
- Introduce scoped_seqlock_read() (Peter Zijlstra)
- Change thread_group_cputime() to use scoped_seqlock_read()
(Oleg Nesterov)
- Change do_task_stat() to use scoped_seqlock_read()
(Oleg Nesterov)
- Change do_io_accounting() to use scoped_seqlock_read()
(Oleg Nesterov)
- Fix the incorrect documentation of read_seqbegin_or_lock() /
need_seqretry() (Oleg Nesterov)
- Allow KASAN to fail optimizing (Peter Zijlstra)
Local lock updates:
- Fix all kernel-doc warnings (Randy Dunlap)
- Add the <linux/local_lock*.h> headers to MAINTAINERS
(Sebastian Andrzej Siewior)
- Reduce the risk of shadowing via s/l/__l/ and s/tl/__tl/
(Vincent Mailhol)
Lock debugging:
- spinlock/debug: Fix data-race in do_raw_write_lock
(Alexander Sverdlin)
Atomic primitives infrastructure:
- atomic: Skip alignment check for try_cmpxchg() old arg
(Arnd Bergmann)
Rust runtime integration:
- sync: atomic: Enable generated Atomic<T> usage (Boqun Feng)
- sync: atomic: Implement Debug for Atomic<Debug> (Boqun Feng)
- debugfs: Remove Rust native atomics and replace them with
Linux versions (Boqun Feng)
- debugfs: Implement Reader for Mutex<T> only when T is Unpin
(Boqun Feng)
- lock: guard: Add T: Unpin bound to DerefMut (Daniel Almeida)
- lock: Pin the inner data (Daniel Almeida)
- lock: Add a Pin<&mut T> accessor (Daniel Almeida)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Mutexes:
- Redo __mutex_init() to reduce generated code size (Sebastian
Andrzej Siewior)
Seqlocks:
- Introduce scoped_seqlock_read() (Peter Zijlstra)
- Change thread_group_cputime() to use scoped_seqlock_read() (Oleg
Nesterov)
- Change do_task_stat() to use scoped_seqlock_read() (Oleg Nesterov)
- Change do_io_accounting() to use scoped_seqlock_read() (Oleg
Nesterov)
- Fix the incorrect documentation of read_seqbegin_or_lock() /
need_seqretry() (Oleg Nesterov)
- Allow KASAN to fail optimizing (Peter Zijlstra)
Local lock updates:
- Fix all kernel-doc warnings (Randy Dunlap)
- Add the <linux/local_lock*.h> headers to MAINTAINERS (Sebastian
Andrzej Siewior)
- Reduce the risk of shadowing via s/l/__l/ and s/tl/__tl/ (Vincent
Mailhol)
Lock debugging:
- spinlock/debug: Fix data-race in do_raw_write_lock (Alexander
Sverdlin)
Atomic primitives infrastructure:
- atomic: Skip alignment check for try_cmpxchg() old arg (Arnd
Bergmann)
Rust runtime integration:
- sync: atomic: Enable generated Atomic<T> usage (Boqun Feng)
- sync: atomic: Implement Debug for Atomic<Debug> (Boqun Feng)
- debugfs: Remove Rust native atomics and replace them with Linux
versions (Boqun Feng)
- debugfs: Implement Reader for Mutex<T> only when T is Unpin (Boqun
Feng)
- lock: guard: Add T: Unpin bound to DerefMut (Daniel Almeida)
- lock: Pin the inner data (Daniel Almeida)
- lock: Add a Pin<&mut T> accessor (Daniel Almeida)"
* tag 'locking-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/local_lock: Fix all kernel-doc warnings
locking/local_lock: s/l/__l/ and s/tl/__tl/ to reduce the risk of shadowing
locking/local_lock: Add the <linux/local_lock*.h> headers to MAINTAINERS
locking/mutex: Redo __mutex_init() to reduce generated code size
rust: debugfs: Replace the usage of Rust native atomics
rust: sync: atomic: Implement Debug for Atomic<Debug>
rust: sync: atomic: Make Atomic*Ops pub(crate)
seqlock: Allow KASAN to fail optimizing
rust: debugfs: Implement Reader for Mutex<T> only when T is Unpin
seqlock: Change do_io_accounting() to use scoped_seqlock_read()
seqlock: Change do_task_stat() to use scoped_seqlock_read()
seqlock: Change thread_group_cputime() to use scoped_seqlock_read()
seqlock: Introduce scoped_seqlock_read()
documentation: seqlock: fix the wrong documentation of read_seqbegin_or_lock/need_seqretry
atomic: Skip alignment check for try_cmpxchg() old arg
rust: lock: Add a Pin<&mut T> accessor
rust: lock: Pin the inner data
rust: lock: guard: Add T: Unpin bound to DerefMut
locking/spinlock/debug: Fix data-race in do_raw_write_lock
|
||
Asbjørn Sloth Tønnesen
|
3fd2f3d2f4 |
wireguard: netlink: generate netlink code
This patch adopts netlink policies and command definitions generated by ynl-gen, thus completing the conversion to YNL. Given that the old and new policies are functionally identical and have just been moved to a new file, it serves to verify that the policies generated from the spec are identical to the previous policy code. The following functions are renamed: wg_get_device_dump() -> wg_get_device_dumpit() wg_set_device() -> wg_set_device_doit() The new files are covered by the existing drivers/net/wireguard/ pattern in MAINTAINERS. No behavioural changes intended. Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Asbjørn Sloth Tønnesen
|
88cedad45b |
wireguard: uapi: generate header with ynl-gen
Use ynl-gen to generate the UAPI header for WireGuard. The cosmetic changes in this patch confirms that the spec is aligned with the implementation. By using the generated version, it ensures that they stay in sync. Changes in the generated header: * Trivial header guard rename. * Trivial white space changes. * Trivial comment changes. * Precompute bitflags in ynl-gen (see [1]). * Drop __*_F_ALL constants (see [1]). [1] https://lore.kernel.org/r/20251014123201.6ecfd146@kernel.org/ No behavioural changes intended. Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
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Asbjørn Sloth Tønnesen
|
8d974872ab |
wireguard: uapi: move flag enums
Move the wg*_flag enums, so they are defined above the attribute set enums, where ynl-gen would place them. This is an incremental step towards adopting an UAPI header generated by ynl-gen. This is split out to keep the patches readable. This is a trivial patch with no behavioural changes intended. Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Asbjørn Sloth Tønnesen
|
b5c5a82bf5 |
wireguard: uapi: move enum wg_cmd
This patch moves enum wg_cmd to the end of the file, where ynl-gen would generate it. This is an incremental step towards adopting an UAPI header generated by ynl-gen. This is split out to keep the patches readable. This is a trivial patch with no behavioural changes intended. Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Asbjørn Sloth Tønnesen
|
6b0f4ca079 |
wireguard: netlink: add YNL specification
This patch adds a near[1] complete YNL specification for WireGuard, documenting the protocol in a machine-readable format, rather than comments in wireguard.h, and eases usage from C and non-C programming languages alike. The generated C library will be featured in a later patch, so in this patch I will use the in-kernel python client for examples. This makes the documentation in the UAPI header redundant, it is therefore removed. The in-line documentation in the spec is based on the existing comment in wireguard.h, and once released it will be available in the kernel documentation at: https://docs.kernel.org/netlink/specs/wireguard.html (until then run: make htmldocs) Generate wireguard.rst from this spec: $ make -C tools/net/ynl/generated/ wireguard.rst Query wireguard interface through pyynl: $ sudo ./tools/net/ynl/pyynl/cli.py --family wireguard \ --dump get-device \ --json '{"ifindex":3}' [{'fwmark': 0, 'ifindex': 3, 'ifname': 'wg-test', 'listen-port': 54318, 'peers': [{0: {'allowedips': [{0: {'cidr-mask': 0, 'family': 2, 'ipaddr': '0.0.0.0'}}, {0: {'cidr-mask': 0, 'family': 10, 'ipaddr': '::'}}], 'endpoint': b'[...]', 'last-handshake-time': {'nsec': 42, 'sec': 42}, 'persistent-keepalive-interval': 42, 'preshared-key': '[...]', 'protocol-version': 1, 'public-key': '[...]', 'rx-bytes': 42, 'tx-bytes': 42}}], 'private-key': '[...]', 'public-key': '[...]'}] Add another allowed IP prefix: $ sudo ./tools/net/ynl/pyynl/cli.py --family wireguard \ --do set-device --json '{"ifindex":3,"peers":[ {"public-key":"6a df b1 83 a4 ..","allowedips":[ {"cidr-mask":0,"family":10,"ipaddr":"::"}]}]}' [1] As can be seen above, the "endpoint" is only dumped as binary data, as it can't be fully described in YNL. It's either a struct sockaddr_in or struct sockaddr_in6 depending on the attribute length. Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Linus Torvalds
|
1b5dd29869 |
vfs-6.19-rc1.fd_prepare.fs
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Merge tag 'vfs-6.19-rc1.fd_prepare.fs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull fd prepare updates from Christian Brauner:
"This adds the FD_ADD() and FD_PREPARE() primitive. They simplify the
common pattern of get_unused_fd_flags() + create file + fd_install()
that is used extensively throughout the kernel and currently requires
cumbersome cleanup paths.
FD_ADD() - For simple cases where a file is installed immediately:
fd = FD_ADD(O_CLOEXEC, vfio_device_open_file(device));
if (fd < 0)
vfio_device_put_registration(device);
return fd;
FD_PREPARE() - For cases requiring access to the fd or file, or
additional work before publishing:
FD_PREPARE(fdf, O_CLOEXEC, sync_file->file);
if (fdf.err) {
fput(sync_file->file);
return fdf.err;
}
data.fence = fd_prepare_fd(fdf);
if (copy_to_user((void __user *)arg, &data, sizeof(data)))
return -EFAULT;
return fd_publish(fdf);
The primitives are centered around struct fd_prepare. FD_PREPARE()
encapsulates all allocation and cleanup logic and must be followed by
a call to fd_publish() which associates the fd with the file and
installs it into the caller's fdtable. If fd_publish() isn't called,
both are deallocated automatically. FD_ADD() is a shorthand that does
fd_publish() immediately and never exposes the struct to the caller.
I've implemented this in a way that it's compatible with the cleanup
infrastructure while also being usable separately. IOW, it's centered
around struct fd_prepare which is aliased to class_fd_prepare_t and so
we can make use of all the basica guard infrastructure"
* tag 'vfs-6.19-rc1.fd_prepare.fs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (42 commits)
io_uring: convert io_create_mock_file() to FD_PREPARE()
file: convert replace_fd() to FD_PREPARE()
vfio: convert vfio_group_ioctl_get_device_fd() to FD_ADD()
tty: convert ptm_open_peer() to FD_ADD()
ntsync: convert ntsync_obj_get_fd() to FD_PREPARE()
media: convert media_request_alloc() to FD_PREPARE()
hv: convert mshv_ioctl_create_partition() to FD_ADD()
gpio: convert linehandle_create() to FD_PREPARE()
pseries: port papr_rtas_setup_file_interface() to FD_ADD()
pseries: convert papr_platform_dump_create_handle() to FD_ADD()
spufs: convert spufs_gang_open() to FD_PREPARE()
papr-hvpipe: convert papr_hvpipe_dev_create_handle() to FD_PREPARE()
spufs: convert spufs_context_open() to FD_PREPARE()
net/socket: convert __sys_accept4_file() to FD_ADD()
net/socket: convert sock_map_fd() to FD_ADD()
net/kcm: convert kcm_ioctl() to FD_PREPARE()
net/handshake: convert handshake_nl_accept_doit() to FD_PREPARE()
secretmem: convert memfd_secret() to FD_ADD()
memfd: convert memfd_create() to FD_ADD()
bpf: convert bpf_token_create() to FD_PREPARE()
...
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|
Jakub Kicinski
|
cbc19b3229 |
Merge branch 'selftests-drv-net-fix-issues-in-devlink_rate_tc_bw-py'
Carolina Jubran says: ==================== selftests: drv-net: Fix issues in devlink_rate_tc_bw.py This series fixes issues in the devlink_rate_tc_bw.py selftest and introduces a new Iperf3Runner that helps with measurement handling. ==================== Link: https://patch.msgid.link/20251130091938.4109055-1-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Carolina Jubran
|
5cc1bddcfe |
selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py
Currently, tolerance is computed against the TC’s expected percentage, making TC3 (20%) validation overly strict and TC4 (80%) overly loose. Update BandwidthValidator to take a dict of shares and compute bounds relative to the overall total, so that all shares are validated consistently. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-7-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Carolina Jubran
|
9ecd05a2c8 |
selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py
Correct the documented bandwidth distribution between TC3 and TC4 from 80/20 to 20/80. Update test descriptions and printed messages to consistently reflect the intended split. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-6-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Carolina Jubran
|
3796e549e3 |
selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py
Commit 7c32f7a2d3db ("selftests: net: py: don't default to shell=True")
changed the cmd() helper to avoid spawning a shell unless explicitly
requested.
The devlink_rate_tc_bw test enables SR-IOV by writing to the
sriov_numvfs sysfs attribute using redirection. Without shell=True the
redirection is not interpreted and the VF device never appears,
causing the test to fail.
Fix by explicitly passing shell=True in the two places that update
sriov_numvfs.
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Link: https://patch.msgid.link/20251130091938.4109055-5-cjubran@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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|
Carolina Jubran
|
cb1acbd30a |
selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py
Replace the inline iperf3 subprocess and JSON parsing with Iperf3Runner. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-4-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Carolina Jubran
|
2a60ce94c6 |
selftests: drv-net: introduce Iperf3Runner for measurement use cases
GenerateTraffic was added to spin up long-running iperf3 load, mainly to drive high PPS background traffic. It was never meant to provide stable throughput numbers, and trying to repurpose it for measurement does not make sense. Introduce Iperf3Runner to allow tests to split out server/client configuration, control start/stop, and collect JSON output for analysis. This makes it possible to measure bandwidth directly when validating egress shaping. GenerateTraffic stays as the background load generator, reusing the common iperf3 helpers under the hood. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-3-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Carolina Jubran
|
a8658f7bb6 |
selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS
This makes devlink_rate_tc_bw.py present in the Makefile under the same directory. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Nimrod Oren <noren@nvidia.com> Link: https://patch.msgid.link/20251130091938.4109055-2-cjubran@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Jakub Kicinski
|
4a18b6cd7c |
bluetooth-next pull request for net-next:
core: - HCI: Add initial support for PAST - hci_core: Introduce HCI_CONN_FLAG_PAST - ISO: Add support to bind to trigger PAST - HCI: Always use the identity address when initializing a connection - ISO: Attempt to resolve broadcast address - MGMT: Allow use of Set Device Flags without Add Device - ISO: Fix not updating BIS sender source address - HCI: Add support for LL Extended Feature Set driver: - btusb: Add new VID/PID 2b89/6275 for RTL8761BUV - btusb: MT7920: Add VID/PID 0489/e135 - btusb: MT7922: Add VID/PID 0489/e170 - btusb: Add new VID/PID 13d3/3533 for RTL8821CE - btusb: Add new VID/PID 0x0489/0xE12F for RTL8852BE-VT - btusb: Add new VID/PID 0x13d3/0x3618 for RTL8852BE-VT - btusb: Add new VID/PID 0x13d3/0x3619 for RTL8852BE-VT - btusb: Reclassify Qualcomm WCN6855 debug packets - btintel_pcie: Introduce HCI Driver protocol - btintel_pcie: Support for S4 (Hibernate) - btintel_pcie: Suspend/Resume: Controller doorbell interrupt handling - dt-bindings: net: Convert Marvell 8897/8997 bindings to DT schema - btbcm: Use kmalloc_array() to prevent overflow - btrtl: Add the support for RTL8761CUV - hci_h5: avoid sending two SYNC messages - hci_h5: implement CRC data integrity MAINTAINERS: - Add Bartosz Golaszewski as Qualcomm hci_qca maintainer -----BEGIN PGP SIGNATURE----- iQJNBAABCgA3FiEE7E6oRXp8w05ovYr/9JCA4xAyCykFAmkuCjwZHGx1aXoudm9u LmRlbnR6QGludGVsLmNvbQAKCRD0kIDjEDILKdOvD/9ReyEoUaUZ6aKC7TO66fT0 eo/sga036O3k9oeeECsEBOOgwOy86gbR7uGol/vV6mocm/Duql/pNqMrgC28Cxhy u+aGX7sf3s8Pc/e82Syx6u+QPKa6xz3Hnx1UdCM/HXb0nOkJUm3VHFmshFxmXE9g xyMWKtLp1DrXOZNLauR/p8fgAEhGQs8muICuWT/SrEbXZ4+coQoz2h6279IA9FGZ 2qj/pcLIBFk0qePkiaZ5LJGjF0P0+S9uX9XlhF9yIsLIckH8qAbPsHpD1+RsbkId R4WYxIBTVeeUhvWQezodsZJa8HRFQendCeBq8QhOo6fEcprpxrb4/8NS6hipblfy rTeyKUoPmPZ/5/nvx9pbRSqqdVOVT/pEOzD5o66bppX7s7Xq3k/WIRqCKpM4znIp iZyUlaoX6J5R+SHaOLVzRun6oUzXnIHbIGbWopfQBtMgpDajTcxQJpsTWdFQW4El RP+N9xoF+OBa4pKumKCe11pzUJOkBislDIAjNvp8wmevfSfkmo8CbqK5WwfL0rar VeBDlkfPYLVNiJ30WKwmLC4ymRvzAFhC0R6LoDPw8OWTZ7VBc7ReCcHDp8GBWbew pKe7jMWCCOo1q9zx0KBAwghQ6ZbABnK6N6Fg/Wpb/kfz7YkqnsRWRJkI2BTotEdu +bIZ2MwuJ59ROnfPy0tNBw== =ndah -----END PGP SIGNATURE----- Merge tag 'for-net-next-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Luiz Augusto von Dentz says: ==================== bluetooth-next pull request for net-next: core: - HCI: Add initial support for PAST - hci_core: Introduce HCI_CONN_FLAG_PAST - ISO: Add support to bind to trigger PAST - HCI: Always use the identity address when initializing a connection - ISO: Attempt to resolve broadcast address - MGMT: Allow use of Set Device Flags without Add Device - ISO: Fix not updating BIS sender source address - HCI: Add support for LL Extended Feature Set driver: - btusb: Add new VID/PID 2b89/6275 for RTL8761BUV - btusb: MT7920: Add VID/PID 0489/e135 - btusb: MT7922: Add VID/PID 0489/e170 - btusb: Add new VID/PID 13d3/3533 for RTL8821CE - btusb: Add new VID/PID 0x0489/0xE12F for RTL8852BE-VT - btusb: Add new VID/PID 0x13d3/0x3618 for RTL8852BE-VT - btusb: Add new VID/PID 0x13d3/0x3619 for RTL8852BE-VT - btusb: Reclassify Qualcomm WCN6855 debug packets - btintel_pcie: Introduce HCI Driver protocol - btintel_pcie: Support for S4 (Hibernate) - btintel_pcie: Suspend/Resume: Controller doorbell interrupt handling - dt-bindings: net: Convert Marvell 8897/8997 bindings to DT schema - btbcm: Use kmalloc_array() to prevent overflow - btrtl: Add the support for RTL8761CUV - hci_h5: avoid sending two SYNC messages - hci_h5: implement CRC data integrity MAINTAINERS: - Add Bartosz Golaszewski as Qualcomm hci_qca maintainer * tag 'for-net-next-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (29 commits) Bluetooth: btusb: Add new VID/PID 13d3/3533 for RTL8821CE Bluetooth: HCI: Add support for LL Extended Feature Set drivers/bluetooth: btbcm: Use kmalloc_array() to prevent overflow Bluetooth: btintel_pcie: Introduce HCI Driver protocol Bluetooth: btusb: add new custom firmwares Bluetooth: btusb: Add new VID/PID 0x13d3/0x3619 for RTL8852BE-VT Bluetooth: btusb: Add new VID/PID 0x13d3/0x3618 for RTL8852BE-VT Bluetooth: btusb: Add new VID/PID 0x0489/0xE12F for RTL8852BE-VT Bluetooth: iso: fix socket matching ambiguity between BIS and CIS Bluetooth: MAINTAINERS: Add Bartosz Golaszewski as Qualcomm hci_qca maintainer Bluetooth: btrtl: Add the support for RTL8761CUV Bluetooth: Remove redundant pm_runtime_mark_last_busy() calls dt-bindings: net: Convert Marvell 8897/8997 bindings to DT schema Bluetooth: btusb: Reclassify Qualcomm WCN6855 debug packets Bluetooth: btusb: Add new VID/PID 2b89/6275 for RTL8761BUV Bluetooth: btintel_pcie: Suspend/Resume: Controller doorbell interrupt handling Bluetooth: btintel_pcie: Support for S4 (Hibernate) Bluetooth: btusb: MT7922: Add VID/PID 0489/e170 Bluetooth: btusb: MT7920: Add VID/PID 0489/e135 Bluetooth: ISO: Fix not updating BIS sender source address ... ==================== Link: https://patch.msgid.link/20251201213818.97249-1-luiz.dentz@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Florian Fuchs
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d8e08149a5 |
net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive()
Use the napi functions napi_alloc_skb() and napi_gro_receive() instead of netdev_alloc_skb() and netif_receive_skb() for more efficient packet receiving. The switch to napi aware functions increases the RX throughput, reduces the occurrence of retransmissions and improves the resilience against SKB allocation failures. Signed-off-by: Florian Fuchs <fuchsfl@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20251130194155.1950980-1-fuchsfl@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Jakub Kicinski
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3101f3e116 |
Merge branch 'dsa-simple-hsr-offload'
Vladimir Oltean says: ==================== DSA simple HSR offload Provide a "simple" form of HSR offload for 8 DSA drivers (just the NETIF_F_HW_HSR_DUP feature) based on the fact that their taggers use the dsa_xmit_port_mask() function. This is in patches 6-13/15. The helpers per se are introduced in patch 5/15, and documented in patch 15/15. Patch 14/15 is another small (and related) documentation update. For HSR interlink ports the offloading rules are not quite so clear, and for now we completely reject the offload. We can revise that once we see a full offload implementation and understand what is needed. To reject the offload, we need to know the port type, and patch 2/15 helps with that. xrs700x is another driver which should have rejected offload based on port type (patch 4/15). This is a bug fix submitted through net-next due to the extra API required to fix it. If necessary, it could also be picked up separately for backporting. There is also patch 3/15, which makes the HSR offload like the others supported by DSA: if we fall back to the software implementation, don't call port_hsr_leave(), because by definition there won't be anything to do. A slightly unrelated change is patch 1/15, but I noticed this along the way, and if I were to submit it separately, it would conflict with this work (it would appear in patch 12/15's context). Most of the driver additions are trivial. By far the most complex was ocelot (which I could test). Microchip ksz (which I cannot test, and did not patch) would also have some complexity. Essentially, ksz_hsr_join() could fall back to a partial offload through the simple helpers, if the full offload is not possible. But keeping track of which offload kind was used is necessary later in ksz_hsr_leave(). This is left as homework for interested developers. With this patch set, one can observe a 50% reduction in transmitted traffic over HSR interfaces. ==================== Link: https://patch.msgid.link/20251130131657.65080-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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4e4c00f34d |
Documentation: net: dsa: mention simple HSR offload helpers
Keep the documentation up to date. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-16-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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977839161f |
Documentation: net: dsa: mention availability of RedBox
Since commit
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Vladimir Oltean
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7271d4a08c |
net: dsa: a5psw: use simple HSR offload helpers
The "a5psw" tagging protocol uses dsa_xmit_port_mask(), which means we can offload HSR packet duplication on transmit. Enable that feature. Cc: "Clément Léger" <clement.leger@bootlin.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-14-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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585943b7ad |
net: dsa: mt7530: use simple HSR offload helpers
The "mtk" tagging protocol uses dsa_xmit_port_mask(), which means we can offload HSR packet duplication on transmit. Enable that feature. Cc: Daniel Golle <daniel@makrotopia.org> Cc: DENG Qingfang <dqfext@gmail.com> Cc: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Chester A. Unal <chester.a.unal@arinc9.com> Link: https://patch.msgid.link/20251130131657.65080-13-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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017bcff732 |
net: dsa: hellcreek: use simple HSR offload helpers
The "hellcreek" tagging protocol uses dsa_xmit_port_mask(), which means we can offload HSR packet duplication on transmit. Enable that feature. Cc: Kurt Kanzenbach <kurt@linutronix.de> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-12-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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4af9fa2ba6 |
net: dsa: mv88e6060: use simple HSR offload helpers
The "trailer" tagging protocol uses dsa_xmit_port_mask(), which means we can offload HSR packet duplication on transmit. Enable that feature. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-11-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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b6ad21ef28 |
net: dsa: lantiq_gswip: use simple HSR offload helpers
Both the "gswip" and "gsw1xx" protocols use dsa_xmit_port_mask(), so they are compatible with accelerating TX packet duplication for HSR rings. Enable that feature by setting the port_hsr_join() and port_hsr_leave() operations to the simple helpers provided by DSA. Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: Daniel Golle <daniel@makrotopia.org> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-10-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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6db31942e3 |
net: dsa: realtek: use simple HSR offload helpers
All known Realtek protocols: "rtl4a", "rtl8_4" and "rtl8_4t" use dsa_xmit_port_mask(), so they are compatible with accelerating TX packet duplication for HSR rings. Enable that feature by setting the port_hsr_join() and port_hsr_leave() operations to the simple helpers provided by DSA. Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Linus Walleij <linusw@kernel.org> Link: https://patch.msgid.link/20251130131657.65080-9-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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4b65d44555 |
net: dsa: ocelot: use simple HSR offload helpers
Accelerate TX packet duplication with HSR rings. This is only possible with the NPI-based "ocelot" tagging protocol, not with "ocelot-8021q", because the latter does not use dsa_xmit_port_mask(). This has 2 implications: - Depending on tagging protocol, we should set (or not set) the offload feature flags. Switching tagging protocols is done with ports down, by design. Additional calls to dsa_port_simple_hsr_join() can be put in the ds->ops->change_tag_protocol() path, as I had originally tried, but this would not work: dsa_user_setup_tagger() would later clear the feature flag that we just set. So the additional call to dsa_port_simple_hsr_join() should sit in the ds->ops->port_enable() call. - When joining a HSR ring and we are currently using "ocelot-8021q", there are cases when we should return -EOPNOTSUPP (pessimistic) and cases when we shouldn't (optimistic). In the pessimistic case, it is a configuration that the port won't support even with the right tagging protocol. Distinguishing between these 2 cases matters because if we just return -EOPNOTSUPP regardless, we lose the dp->hsr_dev pointer and can no longer replay the offload later for the optimistic case, from felix_port_enable(). Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-8-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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42e63b1373 |
net: dsa: yt921x: use simple HSR offloading helpers
Accelerate TX packet duplication with HSR rings. Cc: David Yang <mmyangfl@gmail.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-7-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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0e75bfe340 |
net: dsa: add simple HSR offload helpers
It turns out that HSR offloads are so fine-grained that many DSA switches can do a small part even though they weren't specifically designed for the protocols supported by that driver (HSR and PRP). Specifically NETIF_F_HW_HSR_DUP - it is simple packet duplication on transmit, towards all (aka 2) ports members of the HSR device. For many DSA switches, we know how to duplicate a packet, even though we never typically use that feature. The transmit port mask from the tagging protocol can have multiple bits set, and the switch should send the packet once to every port with a bit set from that mask. Nonetheless, not all tagging protocols are like this, and sometimes the port is a single numeric value rather than a bit mask. For that reason, and also because switches can sometimes change tagging protocols for different ones, we need to make HSR offload helpers opt-in. For devices that can do nothing else HSR-specific, we introduce dsa_port_simple_hsr_join() and dsa_port_simple_hsr_leave(). These functions monitor when two user ports of the same switch are part of the same HSR device, and when that condition is true, they toggle the NETIF_F_HW_HSR_DUP feature flag of both net devices. Normally only dsa_port_simple_hsr_join() and dsa_port_simple_hsr_leave() are needed. The dsa_port_simple_hsr_validate() helper is just to see what kind of configuration could be offloadable using the generic helpers. This is used by switch drivers which are not currently using the right tagging protocol to offload this HSR ring, but could in principle offload it after changing the tagger. Suggested-by: David Yang <mmyangfl@gmail.com> Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> Cc: Chester A. Unal" <chester.a.unal@arinc9.com> Cc: "Clément Léger" <clement.leger@bootlin.com> Cc: Daniel Golle <daniel@makrotopia.org> Cc: DENG Qingfang <dqfext@gmail.com> Cc: Florian Fainelli <florian.fainelli@broadcom.com> Cc: George McCollister <george.mccollister@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: Jonas Gorski <jonas.gorski@gmail.com> Cc: Kurt Kanzenbach <kurt@linutronix.de> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Sean Wang <sean.wang@mediatek.com> Cc: UNGLinuxDriver@microchip.com Cc: Woojung Huh <woojung.huh@microchip.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-6-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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30296ac764 |
net: dsa: xrs700x: reject unsupported HSR configurations
As discussed here:
https://lore.kernel.org/netdev/20240620090210.drop6jwh7e5qw556@skbuf/
the fact is that the xrs700x.c driver only supports offloading
HSR_PT_SLAVE_A and HSR_PT_SLAVE_B (which were the only port types at the
time the offload was written, _for this driver_).
Up until now, the API did not explicitly tell offloading drivers what
port has what role. So xrs700x can get confused and think that it can
support a configuration which it actually can't. There was a table in
the attached link which gave an example:
$ ip link add name hsr0 type hsr slave1 swp0 slave2 swp1 \
interlink swp2 supervision 45 version 1
HSR_PT_SLAVE_A HSR_PT_SLAVE_B HSR_PT_INTERLINK
----------------------------------------------------------------
user
space 0 1 2
requests
----------------------------------------------------------------
XRS700X
driver 1 2 -
understands
The switch would act as if the ring ports were swp1 and swp2.
Now that we have explicit hsr_get_port_type() API, let's use that to
work around the unintended semantical changes of the offloading API
brought by the introduction of interlink ports in HSR.
Fixes:
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Vladimir Oltean
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bed59a86e9 |
net: dsa: avoid calling ds->ops->port_hsr_leave() when unoffloaded
This mirrors what we do in dsa_port_lag_leave() and dsa_port_bridge_leave(): when ds->ops->port_hsr_join() returns -EOPNOTSUPP, we fall back to a software implementation where dp->hsr_dev is NULL, and the unoffloaded port is no longer bothered with calls from the HSR layer. This helps, for example, with interlink ports which current DSA drivers don't know how to offload. We have to check only in port_hsr_join() for the port type, then in port_hsr_leave() we are sure we're dealing only with known port types. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20251130131657.65080-4-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Xiaoliang Yang
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a0244e7621 |
net: hsr: create an API to get hsr port type
Since the introduction of HSR_PT_INTERLINK in commit
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