IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
- KCSAN enabled for arm64.
- Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD.
- Some more SVE clean-ups and refactoring in preparation for SME support
(scalable matrix extensions).
- BTI clean-ups (SYM_FUNC macros etc.)
- arm64 atomics clean-up and codegen improvements.
- HWCAPs for FEAT_AFP (alternate floating point behaviour) and
FEAT_RPRESS (increased precision of reciprocal estimate and reciprocal
square root estimate).
- Use SHA3 instructions to speed-up XOR.
- arm64 unwind code refactoring/unification.
- Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP == 1
(potentially set by a hypervisor; user-space already does this).
- Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU,
Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups.
- Other fixes and clean-ups; highlights: fix the handling of erratum
1418040, correct the calculation of the nomap region boundaries,
introduce io_stop_wc() mapped to the new DGH instruction (data
gathering hint).
-----BEGIN PGP SIGNATURE-----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=ecyi
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- KCSAN enabled for arm64.
- Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD.
- Some more SVE clean-ups and refactoring in preparation for SME
support (scalable matrix extensions).
- BTI clean-ups (SYM_FUNC macros etc.)
- arm64 atomics clean-up and codegen improvements.
- HWCAPs for FEAT_AFP (alternate floating point behaviour) and
FEAT_RPRESS (increased precision of reciprocal estimate and
reciprocal square root estimate).
- Use SHA3 instructions to speed-up XOR.
- arm64 unwind code refactoring/unification.
- Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP ==
1 (potentially set by a hypervisor; user-space already does this).
- Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU,
Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups.
- Other fixes and clean-ups; highlights: fix the handling of erratum
1418040, correct the calculation of the nomap region boundaries,
introduce io_stop_wc() mapped to the new DGH instruction (data
gathering hint).
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (81 commits)
arm64: Use correct method to calculate nomap region boundaries
arm64: Drop outdated links in comments
arm64: perf: Don't register user access sysctl handler multiple times
drivers: perf: marvell_cn10k: fix an IS_ERR() vs NULL check
perf/smmuv3: Fix unused variable warning when CONFIG_OF=n
arm64: errata: Fix exec handling in erratum 1418040 workaround
arm64: Unhash early pointer print plus improve comment
asm-generic: introduce io_stop_wc() and add implementation for ARM64
arm64: Ensure that the 'bti' macro is defined where linkage.h is included
arm64: remove __dma_*_area() aliases
docs/arm64: delete a space from tagged-address-abi
arm64: Enable KCSAN
kselftest/arm64: Add pidbench for floating point syscall cases
arm64/fp: Add comments documenting the usage of state restore functions
kselftest/arm64: Add a test program to exercise the syscall ABI
kselftest/arm64: Allow signal tests to trigger from a function
kselftest/arm64: Parameterise ptrace vector length information
arm64/sve: Minor clarification of ABI documentation
arm64/sve: Generalise vector length configuration prctl() for SME
arm64/sve: Make sysctl interface for SVE reusable by SME
...
A few minor cleanups for cross-architecture code: Alexandre Ghiti
deals with removing some leftovers from drivers and features that
have been removed, and Wasin Thonkaew has a cosmetic change.
-----BEGIN PGP SIGNATURE-----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=ZaDF
-----END PGP SIGNATURE-----
Merge tag 'asm-generic-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"A few minor cleanups for cross-architecture code: Alexandre Ghiti
deals with removing some leftovers from drivers and features that have
been removed, and Wasin Thonkaew has a cosmetic change"
* tag 'asm-generic-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic/error-injection.h: fix a spelling mistake, and a coding style issue
arch: Remove leftovers from prism54 wireless driver
arch: Remove leftovers from mandatory file locking
Documentation, arch: Remove leftovers from CIFS_WEAK_PW_HASH
Documentation, arch: Remove leftovers from raw device
Pull clocksource watchdog updates from Paul McKenney:
- Avoid accidental unstable marking of clocksources by rejecting
clocksource measurements where the source of the skew is the delay
reading reference clocksource itself. This change avoids many of the
current false positives caused by epic cache-thrashing workloads.
- Reduce the default clocksource_watchdog() retries to 2, thus offsetting
the increased overhead due to #1 above rereading the reference
clocksource.
Link: https://lore.kernel.org/lkml/20220105001723.GA536708@paulmck-ThinkPad-P17-Gen-1
The config RANDOMIZE_SLAB does not exist, the authors probably intended to
refer to the config RANDOMIZE_BASE, which provides kernel address-space
randomization. They probably just confused SLAB with BASE (these two
four-letter words coincidentally share three common letters), as they also
point out the config SLAB_FREELIST_RANDOM as further randomization within
the same sentence.
Fix the reference of the config for kernel address-space randomization to
the config that provides that.
Fixes: 6e88559470f5 ("Documentation: Add section about CPU vulnerabilities for Spectre")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20211230171940.27558-1-lukas.bulwahn@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Introduce the AMD P-State driver design and implementation.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull input fixes from Dmitry Torokhov:
"A few small updates to drivers.
Of note we are now deferring probes of i8042 on some Asus devices as
the controller is not ready to respond to queries first time around
when the driver is compiled into the kernel"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elants_i2c - do not check Remark ID on eKTH3900/eKTH5312
Input: atmel_mxt_ts - fix double free in mxt_read_info_block
Input: goodix - fix memory leak in goodix_firmware_upload
Input: goodix - add id->model mapping for the "9111" model
Input: goodix - try not to touch the reset-pin on x86/ACPI devices
Input: i8042 - enable deferred probe quirk for ASUS UM325UA
Input: elantech - fix stack out of bound access in elantech_change_report_id()
Input: iqs626a - prohibit inlining of channel parsing functions
Input: i8042 - add deferred probe support
* Fix for kvm_run->if_flag on SEV-ES
* Fix for page table use-after-free if yielding during exit_mm()
* Improve behavior when userspace starts a nested guest with invalid state
* Fix missed wakeup with assigned devices but no VT-d posted interrupts
* Do not tell userspace to save/restore an unsupported PMU MSR
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmHCGbIUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroNMSwf+PpOl69xqQCHzLpDtA9MTBZZi5uKc
eZqMtQ7D+T7XYbtMiHBI9zofcbtHlQVC9Na74j8J7bCuvqe8UGS/z93RoZZQ+/dg
seEbQNEgcNlPD1G3JzaipcGhRqQl6j5G9LjuixyFpkS2O27YsRTpb1HJag31uSFV
Xd7Ih0R2YnKCNJqJov324KHpDM3c4FZL8HdCS/gG94qyLHPA2dJ8fOTwCcAK4LP6
tl9XW5InXMVcck9ssDKFpAfipMNNPNPeAHMONbIm6hyG5HkVjcS3JT1bZmkauxky
VIegPlAmorRCig5Hj2QfWEIOfvTUPdmm7WWh+SSZamY6cyvolWs1hV86Bg==
=333O
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
- Fix for compilation of selftests on non-x86 architectures
- Fix for kvm_run->if_flag on SEV-ES
- Fix for page table use-after-free if yielding during exit_mm()
- Improve behavior when userspace starts a nested guest with invalid
state
- Fix missed wakeup with assigned devices but no VT-d posted interrupts
- Do not tell userspace to save/restore an unsupported PMU MSR
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: Wake vCPU when delivering posted IRQ even if vCPU == this vCPU
KVM: selftests: Add test to verify TRIPLE_FAULT on invalid L2 guest state
KVM: VMX: Fix stale docs for kvm-intel.emulate_invalid_guest_state
KVM: nVMX: Synthesize TRIPLE_FAULT for L2 if emulation is required
KVM: VMX: Always clear vmx->fail on emulation_required
selftests: KVM: Fix non-x86 compiling
KVM: x86: Always set kvm_run->if_flag
KVM: x86/mmu: Don't advance iterator after restart due to yielding
KVM: x86: remove PMU FIXED_CTR3 from msrs_to_save_all
Update the documentation for kvm-intel's emulate_invalid_guest_state to
rectify the description of KVM's default behavior, and to document that
the behavior and thus parameter only applies to L1.
Fixes: a27685c33acc ("KVM: VMX: Emulate invalid guest state by default")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211207193006.120997-4-seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This config was removed so remove all references to it.
Fixes: 76a3c92ec9e0 ("cifs: remove support for NTLM and weaker authentication algorithms")
Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Reviewed-by: Steve French <smfrench@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de> [arch/arm/configs]
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Raw device interface was removed so remove all references to configs
related to it.
Fixes: 603e4922f1c8 ("remove the raw driver")
Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Acked-by: Arnd Bergmann <arnd@arndb.de> [arch/arm/configs]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Implement a new, modern GPIO testing module controlled by configfs
attributes instead of module parameters. The goal of this driver is
to provide a replacement for gpio-mockup that will be easily extensible
with new features and doesn't require reloading the module to change
the setup.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
* for-next/perf-user-counter-access:
Documentation: arm64: Document PMU counters access from userspace
arm64: perf: Enable PMU counter userspace access for perf event
arm64: perf: Add userspace counter access disable switch
perf: Add a counter for number of user access events in context
x86: perf: Move RDPMC event flag to a common definition
PCIe PMU Root Complex Integrated End Point(RCiEP) device is supported on
HiSilicon HIP09 platform. Document it to provide guidance on how to
use it.
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20211202080633.2919-2-liuqi115@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Like x86, some users may want to disable userspace PMU counter
altogether. Add a sysctl 'perf_user_access' file to control userspace
counter access. The default is '0' which is disabled. Writing '1'
enables access.
Note that x86 supports globally enabling user access by writing '2' to
/sys/bus/event_source/devices/cpu/rdpmc. As there's not existing
userspace support to worry about, this shouldn't be necessary for Arm.
It could be added later if the need arises.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-perf-users@vger.kernel.org
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-4-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmG2fU0eHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGC7EH/3R7Rt+OD8Wn8Ss3
w8V+dBxVwa2u2oMTyUHPxaeOXZ7bi38XlUdLFPOK/76bGwO0a5TmYZqsWdRbGyT0
HfcYjHsQ0lbJXk/nh2oM47oJxJXVpThIHXJEk0FZ0Y5t+DYjIYlNHzqZymUyhLem
St74zgWcyT+MXuqY34vB827FJDUnOxhhhi85tObeunaSPAomy9aiYidSC1ARREnz
iz2VUntP/QnRnKVvL2nUZNzcz1xL5vfCRSKsRGRSv3qW1Y/1M71ylt6JVmSftWq+
VmMdFxFhdrb1OK/1ct/930Un/UP2NG9EJsWxote2XYlnVSZHzDqH7lUhbqgdCcLz
1m2tVNY=
=7wRd
-----END PGP SIGNATURE-----
Merge v5.16-rc5 into drm-next
Thomas Zimmermann requested a fixes backmerge, specifically also for
96c5f82ef0a1 ("drm/vc4: fix error code in vc4_create_object()")
Just a bunch of adjacent changes conflicts, even the big pile of them
in vc4.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmGtOFYeHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG1hUH/1bmlOYsscJ7biqd
VECr5HhTg6iRvwWUiOpU27fLuBeAM1ZdF0oLuCtzvbK2h8lfTclcHfueihK0GIvX
ci8BvwpOYfUdDUWHglgvGXqICqYch3PiBVMFiRRRkzcpZdyCFCirAynLdOeusdTU
72Fi2RBaIM+U/5UVKcTx0J9WJsvFcG97lnNX5nT3dUmuoSW4WmX+h4vIe8VYFVmd
8q1gD17hPL+ThTKcZApn7IsArU1LNEGRg0tYItgMJo8AMTvsZjwR6yQgXeyuQ0Xk
xp6pZwzABtnL9dfNJ95q1GhsJBX5T5XvAVjt2uR1ADbgh6TDApC1VBKICm1Nva7g
uT6S0yE=
=JNL8
-----END PGP SIGNATURE-----
Merge tag 'v5.16-rc4' into docs-next
I have a couple of fixes for warnings introduced after -rc1; catch up to
-rc4 so that the fixes have something to fix.
Allow the rcu_nocbs kernel parameter to be specified just by itself,
without specifying any CPUs. This allows systems administrators to use
"rcu_nocbs" to specify that none of the CPUs are to be offloaded at boot
time, but than any of them may be offloaded at runtime via cpusets.
In contrast, if the "rcu_nocbs" or "nohz_full" kernel parameters are not
specified at all, then not only are none of the CPUs offloaded at boot,
none of them can be offloaded at runtime, either.
While in the area, modernize the description of the "rcuo" kthreads'
naming scheme.
Reviewed-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Joel Fernandes <joel@joelfernandes.org>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
By default, when lock contention is encountered, the RCU Tasks flavors
of RCU switch to using per-CPU queueing. However, if the callback
flood ends, per-CPU queueing continues to be used, which introduces
significant additional overhead, especially for callback invocation,
which fans out a series of workqueue handlers.
This commit therefore switches back to single-queue operation if at the
beginning of a grace period there are very few callbacks. The definition
of "very few" is set by the rcupdate.rcu_task_collapse_lim module
parameter, which defaults to 10. This switch happens in two phases,
with the first phase causing future callbacks to be enqueued on CPU 0's
queue, but with all queues continuing to be checked for grace periods
and callback invocation. The second phase checks to see if an RCU grace
period has elapsed and if all remaining RCU-Tasks callbacks are queued
on CPU 0. If so, only CPU 0 is checked for future grace periods and
callback operation.
Of course, the return of contention anywhere during this process will
result in returning to per-CPU callback queueing.
Reported-by: Martin Lau <kafai@fb.com>
Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
The rcupdate.rcu_task_enqueue_lim module parameter allows system
administrators to tune the number of callback queues used by the RCU
Tasks flavors. However if callback storms are infrequent, it would
be better to operate with a single queue on a given system unless and
until that system actually needed more queues. Systems not needing
more queues can then avoid the overhead of checking the extra queues
and especially avoid the overhead of fanning workqueue handlers out to
all CPUs to invoke callbacks.
This commit therefore switches to using all the CPUs' callback queues if
call_rcu_tasks_generic() encounters too much lock contention. The amount
of lock contention to tolerate defaults to 100 contended lock acquisitions
per jiffy, and can be adjusted using the new rcupdate.rcu_task_contend_lim
module parameter.
Such switching is undertaken only if the rcupdate.rcu_task_enqueue_lim
module parameter is negative, which is its default value (-1).
This allows savvy systems administrators to set the number of queues
to some known good value and to not have to worry about the kernel doing
any second guessing.
[ paulmck: Apply feedback from Guillaume Tucker and kernelci. ]
Reported-by: Martin Lau <kafai@fb.com>
Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit adds a rcupdate.rcu_task_enqueue_lim module parameter that
sets the initial number of callback queues to use for the RCU Tasks
family of RCU implementations. This parameter allows testing of various
fanout values.
Reported-by: Martin Lau <kafai@fb.com>
Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Deactivating KUEP at boot time is unrelevant for PPC32 and BOOK3E/64.
Remove it.
It allows to refactor setup_kuep() via a __weak function
that only PPC64s will overide for now.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Fix CONFIG_PPC_BOOKS_64 -> CONFIG_PPC_BOOK3S_64 typo]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4c36df18b41c988c4512f45d96220486adbe4c99.1634627931.git.christophe.leroy@csgroup.eu
Theoretically, when the hardware signature in FACS changes, the OS
is supposed to gracefully decline to attempt to resume from S4:
"If the signature has changed, OSPM will not restore the system
context and can boot from scratch"
In practice, Windows doesn't do this and many laptop vendors do allow
the signature to change especially when docking/undocking, so it would
be a bad idea to simply comply with the specification by default in the
general case.
However, there are use cases where we do want the compliant behaviour
and we know it's safe. Specifically, when resuming virtual machines where
we know the hypervisor has changed sufficiently that resume will fail.
We really want to be able to *tell* the guest kernel not to try, so it
boots cleanly and doesn't just crash. This patch provides a way to opt
in to the spec-compliant behaviour on the command line.
A follow-up patch may do this automatically for certain "known good"
machines based on a DMI match, or perhaps just for all hypervisor
guests since there's no good reason a hypervisor would change the
hardware_signature that it exposes to guests *unless* it wants them
to obey the ACPI specification.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit converts the rcutorture.fwd_progress module parameter from
bool to int, so that it specifies the number of callback-flood kthreads.
Values less than zero specify one kthread per CPU, however, the number of
kthreads executing concurrently is limited to the number of online CPUs.
This commit also reverse the order of the need-resched and callback-flood
operations to cause the callback flooding to happen more nearly at the
same time.
Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmGtOFYeHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG1hUH/1bmlOYsscJ7biqd
VECr5HhTg6iRvwWUiOpU27fLuBeAM1ZdF0oLuCtzvbK2h8lfTclcHfueihK0GIvX
ci8BvwpOYfUdDUWHglgvGXqICqYch3PiBVMFiRRRkzcpZdyCFCirAynLdOeusdTU
72Fi2RBaIM+U/5UVKcTx0J9WJsvFcG97lnNX5nT3dUmuoSW4WmX+h4vIe8VYFVmd
8q1gD17hPL+ThTKcZApn7IsArU1LNEGRg0tYItgMJo8AMTvsZjwR6yQgXeyuQ0Xk
xp6pZwzABtnL9dfNJ95q1GhsJBX5T5XvAVjt2uR1ADbgh6TDApC1VBKICm1Nva7g
uT6S0yE=
=JNL8
-----END PGP SIGNATURE-----
Merge tag 'v5.16-rc4' into media_tree
Linux 5.16-rc4
* tag 'v5.16-rc4': (984 commits)
Linux 5.16-rc4
KVM: SVM: Do not terminate SEV-ES guests on GHCB validation failure
KVM: SEV: Fall back to vmalloc for SEV-ES scratch area if necessary
KVM: SEV: Return appropriate error codes if SEV-ES scratch setup fails
parisc: Mark cr16 CPU clocksource unstable on all SMP machines
parisc: Fix "make install" on newer debian releases
sched/uclamp: Fix rq->uclamp_max not set on first enqueue
preempt/dynamic: Fix setup_preempt_mode() return value
cifs: avoid use of dstaddr as key for fscache client cookie
cifs: add server conn_id to fscache client cookie
cifs: wait for tcon resource_id before getting fscache super
cifs: fix missed refcounting of ipc tcon
x86/xen: Add xenpv_restore_regs_and_return_to_usermode()
x86/entry: Use the correct fence macro after swapgs in kernel CR3
fget: check that the fd still exists after getting a ref to it
x86/entry: Add a fence for kernel entry SWAPGS in paranoid_entry()
x86/sev: Fix SEV-ES INS/OUTS instructions for word, dword, and qword
powercap: DTPM: Drop unused local variable from init_dtpm()
io-wq: don't retry task_work creation failure on fatal conditions
serial: 8250_bcm7271: UART errors after resuming from S2
...
Stephen Rothwell reported the following warning caused by commit
f1045056c726 ("topology/sysfs: rework book and drawer topology
ifdefery"):
Documentation/admin-guide/cputopology.rst:49: WARNING: Block quote
ends without a blank line; unexpected unindent.
To fix this remove the extra indentation again.
Fixes: f1045056c726 ("topology/sysfs: rework book and drawer topology ifdefery")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/Ya4Ht2K9x2+lUtuR@osiris
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
v1.0 of the ReadTheDocs theme.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmGuS2oPHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5YYsEH/jyYembdY2dydJaVKqFgAa/IOG0SC7jfq3DQ
sOcPMSVq4OTwPYGiki4Gn8raNOkoR5JhXJ7mvZgFP5cQJdVnsOkEL1sDKakxRkLk
SvXYg3brLOjHRjRjmmbuLyZSwFquKr3lfOOLx2neTVk/xFSgTOlWY2OVEdToQ4CE
wtntgL/kfmVBJor1ScwjnX27tB1dRC0cDrsD/NpuHitw9e3QxhvBGXnLAbGZV733
1i/Ge//oD4yan/lM89et4HSbI6QCV5vdaCDtCGkZhTCXyY/AWjStcDDKPwZNjUjA
NIqDg85qeUCrMqnye4Jyl7zno2C3KDPa0XtyjOmKqIdFZC4mwRc=
=IXEs
-----END PGP SIGNATURE-----
Merge tag 'docs-5.16-3' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A few important documentation fixes, including breakage that comes
with v1.0 of the ReadTheDocs theme"
* tag 'docs-5.16-3' of git://git.lwn.net/linux:
Documentation: Add minimum pahole version
Documentation/process: fix self reference
docs: admin-guide/blockdev: Remove digraph of node-states
docs: conf.py: fix support for Readthedocs v 1.0.0
Provide default defines for the topology_book_[id|cpumask] and
topology_drawer_[id|cpumask] macros just like for each other topology
level.
This way all topology levels are handled in a similar way. Still the
the book and drawer levels are only used on s390, and also the sysfs
attributes are only created on s390. However other architectures may
opt in if wanted.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-4-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The cluster_id and cluster_cpus topology sysfs attributes have been
added with commit c5e22feffdd7 ("topology: Represent clusters of CPUs
within a die").
They are currently only used for x86, arm64, and riscv (via generic
arch topology), however they are still present with bogus default
values for all other architectures. Instead of enforcing such new
sysfs attributes to all architectures, make them only optional visible
if an architecture opts in by defining both the topology_cluster_id
and topology_cluster_cpumask attributes.
This is similar to what was done when the book and drawer topology
levels were introduced: avoid useless and therefore confusing sysfs
attributes for architectures which cannot make use of them.
This should not break any existing applications, since this is a
new interface introduced with the v5.16 merge window.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-3-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The die_id and die_cpus topology sysfs attributes have been added with
commit 0e344d8c709f ("cpu/topology: Export die_id") and commit
2e4c54dac7b3 ("topology: Create core_cpus and die_cpus sysfs attributes").
While they are currently only used and useful for x86 they are still
present with bogus default values for all architectures. Instead of
enforcing such new sysfs attributes to all architectures, make them
only optional visible if an architecture opts in by defining both the
topology_die_id and topology_die_cpumask attributes.
This is similar to what was done when the book and drawer topology
levels were introduced: avoid useless and therefore confusing sysfs
attributes for architectures which cannot make use of them.
This should not break any existing applications, since this is a
rather new interface and applications should be able to handle also
older kernel versions without such attributes - besides that they
contain only useful information for x86.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-2-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
All of the uses of CONFIG_RCU_FAST_NO_HZ=y that I have seen involve
systems with RCU callbacks offloaded. In this situation, all that this
Kconfig option does is slow down idle entry/exit with an additional
allways-taken early exit. If this is the only use case, then this
Kconfig option nothing but an attractive nuisance that needs to go away.
This commit therefore removes the RCU_FAST_NO_HZ Kconfig option.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This document advises building with both CONFIG_NO_HZ=y and
CONFIG_RCU_FAST_NO_HZ=y. However, CONFIG_NO_HZ=y offloads callbacks from
all nohz_full CPUs, and CPUs with offloaded callbacks do not benefit from
CONFIG_RCU_FAST_NO_HZ=y. Quite the opposite: CONFIG_RCU_FAST_NO_HZ=y
simply adds a bit of idle entry/exit overhead.
This commit therefore changes that advice to only CONFIG_NO_HZ=y.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
With the previous patch, there is an extra watchdog read in each retry.
Now the total number of clocksource reads is increased to 4 per iteration.
In order to avoid increasing the clock skew check overhead, the default
maximum number of retries is reduced from 3 to 2 to maintain the same 12
clocksource reads in the worst case.
Suggested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
While node-states-8.dot has two digraphs, the dot(1) command can
not properly handle multiple graphs in a DOT file and the
kernel-doc page at
https://www.kernel.org/doc/html/latest/admin-guide/blockdev/drbd/figures.html
fails to render the graphs.
It turned out that the digraph of node_states can be removed.
Quote from Joel's reflection:
On reflection, the digraph node_states can be removed entirely.
It is too basic to contain any useful information. In addition
it references "ioctl_set_state". The ioctl configuration
interface for DRBD has long been removed. In fact, it was never
in the upstream version of DRBD.
Remove node_states and rename the DOT file peer_states-8.dot.
Suggested-by: Joel Colledge <joel.colledge@linbit.com>
Acked-by: Joel Colledge <joel.colledge@linbit.com>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>
Link: https://lore.kernel.org/r/7df04f45-8746-e666-1a9d-a998f1ab1f91@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Enable the memtest functionality and rearrange some code to prevent it
from clobbering the initrd.
The code to implement CONFIG_BLK_DEV_INITRD was conditional on
!defined(CONFIG_SUN3). For simplicity, remove that test on the basis
that m68k_ramdisk.size == 0 on Sun 3. The SLIME source code at
http://sammy.net/sun3/ftp/pub/m68k/sun3/slime/slime-2.0.tar.gz
indicates that no BI_RAMDISK entry is ever passed to the kernel due
to #ifdef 0 around the relevant code.
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Sam Creasey <sammy@sammy.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/8170fe1d1c62426d82275d36ba409ecc18754292.1637274578.git.fthain@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
We've got a bug report about the non-working keyboard on ASUS ZenBook
UX425UA. It seems that the PS/2 device isn't ready immediately at
boot but takes some seconds to get ready. Until now, the only
workaround is to defer the probe, but it's available only when the
driver is a module. However, many distros, including openSUSE as in
the original report, build the PS/2 input drivers into kernel, hence
it won't work easily.
This patch adds the support for the deferred probe for i8042 stuff as
a workaround of the problem above. When the deferred probe mode is
enabled and the device couldn't be probed, it'll be repeated with the
standard deferred probe mechanism.
The deferred probe mode is enabled either via the new option
i8042.probe_defer or via the quirk table entry. As of this patch, the
quirk table contains only ASUS ZenBook UX425UA.
The deferred probe part is based on Fabio's initial work.
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1190256
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Samuel Čavoj <samuel@cavoj.net>
Link: https://lore.kernel.org/r/20211117063757.11380-1-tiwai@suse.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The nomodeset kernel command line parameter is not documented. Its name
is quite vague and is not intuitive what's the behaviour when it is set.
Document in kernel-parameters.txt what actually happens when nomodeset
is used. That way, users could know if they want to enable this option.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-6-javierm@redhat.com
StoreEOI is activated by default on platforms supporting the feature
(POWER10) and will be used as soon as firmware advertises its
availability. The kernel parameter provides a way to deactivate its
use. It can be still be reactivated through debugfs.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211105102636.1016378-10-clg@kaod.org
It can be useful in simulators (with very constrained environments)
to allow some PMCs to run from boot so they can be sampled directly
by a test harness, rather than having to run perf.
A previous change freezes counters at boot by default, so provide
a boot time option to un-freeze (plus a bit more flexibility).
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-13-npiggin@gmail.com
Various build- and bug-fixes as well as 1 hardware-id addition.
The following is an automated git shortlog grouped by driver:
amd-pmc:
- Make CONFIG_AMD_PMC depend on RTC_CLASS
dell-wmi-descriptor:
- disable by default
hp_accel:
- Fix an error handling path in 'lis3lv02d_probe()'
platform/mellanox:
- mlxreg-lc: fix error code in mlxreg_lc_create_static_devices()
samsung-laptop:
- Fix typo in a comment
think-lmi:
- Abort probe on analyze failure
thinkpad_acpi:
- fix documentation for adaptive keyboard
- Fix WWAN device disabled issue after S3 deep
- Add support for dual fan control
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEEuvA7XScYQRpenhd+kuxHeUQDJ9wFAmGWHnoUHGhkZWdvZWRl
QHJlZGhhdC5jb20ACgkQkuxHeUQDJ9wwfwf9Hrv9vdzWDnwdeGh5BiWqeTq37/YT
FqYB9HzKIaZKe5MYvibZD7sQQa86Up9/fTNF+TlIj+uMjgvzLkAXWR3841aGM7Mh
z4OhCCx9aJLtpBUWyzsXRmO1ArLfkUIbHMBWMpcrPbeNGIwZMRfuq3ms5wPXWgfu
QzNaDJEBHQlM4aNScb1K3a2HCXJIWcFw78/A8oq7LD0iKxd11ZmOuvKR9MIeUq5s
hH/UEZqeJ8MCG+lNGShYvSCYAG1UIV6qF35XLR8VSlY/FZ48AcT6bgMyrhwJPrCW
yJF6GBd8YnaAJqWWwqeaQMhIi8OKIMthFBbRd4epWAYmgP00w0ROJ+4SLQ==
=siB2
-----END PGP SIGNATURE-----
Merge tag 'platform-drivers-x86-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
"Various build- and bug-fixes as well as one hardware-id addition"
* tag 'platform-drivers-x86-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: thinkpad_acpi: fix documentation for adaptive keyboard
platform/x86: thinkpad_acpi: Fix WWAN device disabled issue after S3 deep
platform/x86: thinkpad_acpi: Add support for dual fan control
platform/x86: think-lmi: Abort probe on analyze failure
platform/x86: dell-wmi-descriptor: disable by default
platform/x86: samsung-laptop: Fix typo in a comment
platform/x86: hp_accel: Fix an error handling path in 'lis3lv02d_probe()'
platform/x86: amd-pmc: Make CONFIG_AMD_PMC depend on RTC_CLASS
platform/mellanox: mlxreg-lc: fix error code in mlxreg_lc_create_static_devices()
The file name: accounting/delay-accounting.rst
should be, instead: Documentation/accounting/delay-accounting.rst.
Also, there's no need to use doc:`foo`, as automarkup.py will
automatically handle plain text mentions to Documentation/
files.
So, update its cross-reference accordingly.
Fixes: fcb501704554 ("delayacct: Document task_delayacct sysctl")
Fixes: c3123552aad3 ("docs: accounting: convert to ReST")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The different values were offset by 1. 0 is for "home mode", 1 for
"web-browser mode", etc. Moreover, the URL to the laptop's user guide
did not work anymore.
Signed-off-by: Vincent Bernat <vincent@bernat.ch>
Link: https://lore.kernel.org/r/20211109195209.176905-1-vincent@bernat.ch
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
support for a filehandle format deprecated 20 years ago, and further
xdr-related cleanup from Chuck.
-----BEGIN PGP SIGNATURE-----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=yKBl
-----END PGP SIGNATURE-----
Merge tag 'nfsd-5.16' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping
support for a filehandle format deprecated 20 years ago, and further
xdr-related cleanup from Chuck"
* tag 'nfsd-5.16' of git://linux-nfs.org/~bfields/linux: (26 commits)
nfsd4: remove obselete comment
nfsd: document server-to-server-copy parameters
NFSD:fix boolreturn.cocci warning
nfsd: update create verifier comment
SUNRPC: Change return value type of .pc_encode
SUNRPC: Replace the "__be32 *p" parameter to .pc_encode
NFSD: Save location of NFSv4 COMPOUND status
SUNRPC: Change return value type of .pc_decode
SUNRPC: Replace the "__be32 *p" parameter to .pc_decode
SUNRPC: De-duplicate .pc_release() call sites
SUNRPC: Simplify the SVC dispatch code path
SUNRPC: Capture value of xdr_buf::page_base
SUNRPC: Add trace event when alloc_pages_bulk() makes no progress
svcrdma: Split svcrmda_wc_{read,write} tracepoints
svcrdma: Split the svcrdma_wc_send() tracepoint
svcrdma: Split the svcrdma_wc_receive() tracepoint
NFSD: Have legacy NFSD WRITE decoders use xdr_stream_subsegment()
SUNRPC: xdr_stream_subsegment() must handle non-zero page_bases
NFSD: Initialize pointer ni with NULL and not plain integer 0
NFSD: simplify struct nfsfh
...
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCYYvEbgAKCRCRxhvAZXjc
og17AQDj+gsxk2lT4GsRo+WrI9qegGSvYHaxbOoqqSL6rHrrsQD+IU92dwVfuUXE
oP+De6/TBmsdygnlECxITp8p4ByhGAM=
=wi2X
-----END PGP SIGNATURE-----
Merge tag 'kernel.sys.v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull prctl updates from Christian Brauner:
"This contains the missing prctl uapi pieces for PR_SCHED_CORE.
In order to activate core scheduling the caller is expected to specify
the scope of the new core scheduling domain.
For example, passing 2 in the 4th argument of
prctl(PR_SCHED_CORE, PR_SCHED_CORE_CREATE, <pid>, 2, 0);
would indicate that the new core scheduling domain encompasses all
tasks in the process group of <pid>. Specifying 0 would only create a
core scheduling domain for the thread identified by <pid> and 2 would
encompass the whole thread-group of <pid>.
Note, the values 0, 1, and 2 correspond to PIDTYPE_PID, PIDTYPE_TGID,
and PIDTYPE_PGID. A first version tried to expose those values
directly to which I objected because:
- PIDTYPE_* is an enum that is kernel internal which we should not
expose to userspace directly.
- PIDTYPE_* indicates what a given struct pid is used for it doesn't
express a scope.
But what the 4th argument of PR_SCHED_CORE prctl() expresses is the
scope of the operation, i.e. the scope of the core scheduling domain
at creation time. So Eugene's patch now simply introduces three new
defines PR_SCHED_CORE_SCOPE_THREAD, PR_SCHED_CORE_SCOPE_THREAD_GROUP,
and PR_SCHED_CORE_SCOPE_PROCESS_GROUP. They simply express what
happens.
This has been on the mailing list for quite a while with all relevant
scheduler folks Cced. I announced multiple times that I'd pick this up
if I don't see or her anyone else doing it. None of this touches
proper scheduler code but only concerns uapi so I think this is fine.
With core scheduling being quite common now for vm managers (e.g.
moving individual vcpu threads into their own core scheduling domain)
and container managers (e.g. moving the init process into its own core
scheduling domain and letting all created children inherit it) having
to rely on raw numbers passed as the 4th argument in prctl() is a bit
annoying and everyone is starting to come up with their own defines"
* tag 'kernel.sys.v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
uapi/linux/prctl: provide macro definitions for the PR_SCHED_CORE type argument
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCYYp8HgAKCRCAXGG7T9hj
vmuVAP4whjbyIi4IxYEOnE6On0aD0AgUMiFa7QXrDZi6NXUQIwEAnggLFe+rEG5C
Fwi/cEXSHrRgveqrgD4GYEr6l0GTxwM=
=/fMa
-----END PGP SIGNATURE-----
Merge tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- a series to speed up the boot of Xen PV guests
- some cleanups in Xen related code
- replacement of license texts with the appropriate SPDX headers and
fixing of wrong SPDX headers in Xen header files
- a small series making paravirtualized interrupt masking much simpler
and at the same time removing complaints of objtool
- a fix for Xen ballooning hogging workqueues for too long
- enablement of the Xen pciback driver for Arm
- some further small fixes/enhancements
* tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
xen/balloon: fix unused-variable warning
xen/balloon: rename alloc/free_xenballooned_pages
xen/balloon: add late_initcall_sync() for initial ballooning done
x86/xen: remove 32-bit awareness from startup_xen
xen: remove highmem remnants
xen: allow pv-only hypercalls only with CONFIG_XEN_PV
x86/xen: remove 32-bit pv leftovers
xen-pciback: allow compiling on other archs than x86
x86/xen: switch initial pvops IRQ functions to dummy ones
x86/xen: remove xen_have_vcpu_info_placement flag
x86/pvh: add prototype for xen_pvh_init()
xen: Fix implicit type conversion
xen: fix wrong SPDX headers of Xen related headers
xen/pvcalls-back: Remove redundant 'flush_workqueue()' calls
x86/xen: Remove redundant irq_enter/exit() invocations
xen-pciback: Fix return in pm_ctrl_init()
xen/x86: restrict PV Dom0 identity mapping
xen/x86: there's no highmem anymore in PV mode
xen/x86: adjust handling of the L3 user vsyscall special page table
xen/x86: adjust xen_set_fixmap()
...
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmGFN6IACgkQnJ2qBz9k
QNkfYwgA1w5x/CsN2IMZdx6FTuZFgbOvQpBMTry8iuOPKK3UyIkZaUirTVLKR0cm
k3QbBR9/vTfQTNg5weuFJcbPZZaCXKEvlPGvDh+pumMbfTkMwL3FADweNBoZ3PzO
EiRrV45AbRgSMOzsfURzCz1T53Gd8fYM3pXxmNXG+bnE7+Ea+heKgor8/jFc4U3w
kAKZTfyCiheo7KxVhFGnkGI3ZhIbnbZne4seY/CE4qtv7/bmBE7bhGpmv8LT5FUn
h/JBDLjFU0fzJpplXE6n/VHXeGaUwb8adnYpzojWQ0lLYFrMIZFQ0KkDK6PNwmJF
MKWGqRxDkf54oeWuEAJ9t4/OorqM9A==
=ltE7
-----END PGP SIGNATURE-----
Merge tag 'fsnotify_for_v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"Support for reporting filesystem errors through fanotify so that
system health monitoring daemons can watch for these and act instead
of scraping system logs"
* tag 'fsnotify_for_v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (34 commits)
samples: remove duplicate include in fs-monitor.c
samples: Fix warning in fsnotify sample
docs: Fix formatting of literal sections in fanotify docs
samples: Make fs-monitor depend on libc and headers
docs: Document the FAN_FS_ERROR event
samples: Add fs error monitoring example
ext4: Send notifications on error
fanotify: Allow users to request FAN_FS_ERROR events
fanotify: Emit generic error info for error event
fanotify: Report fid info for file related file system errors
fanotify: WARN_ON against too large file handles
fanotify: Add helpers to decide whether to report FID/DFID
fanotify: Wrap object_fh inline space in a creator macro
fanotify: Support merging of error events
fanotify: Support enqueueing of error events
fanotify: Pre-allocate pool of error events
fanotify: Reserve UAPI bits for FAN_FS_ERROR
fsnotify: Support FS_ERROR event type
fanotify: Require fid_mode for any non-fd event
fanotify: Encode empty file handle when no inode is provided
...
- Add support for ftrace with direct call and ftrace direct call samples.
- Add support for kernel command lines longer than current 896 bytes and
make its length configurable.
- Add support for BEAR enhancement facility to improve last breaking
event instruction tracking.
- Add kprobes sanity checks and testcases to prevent kprobe in the mid
of an instruction.
- Allow concurrent access to /dev/hwc for the CPUMF users.
- Various ftrace / jump label improvements.
- Convert unwinder tests to KUnit.
- Add s390_iommu_aperture kernel parameter to tweak the limits on
concurrently usable DMA mappings.
- Add ap.useirq AP module option which can be used to disable interrupt
use.
- Add add_disk() error handling support to block device drivers.
- Drop arch specific and use generic implementation of strlcpy and strrchr.
- Several __pa/__va usages fixes.
- Various cio, crypto, pci, kernel doc and other small fixes and
improvements all over the code.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmGFW6EACgkQjYWKoQLX
FBg20Qf/UbohgnKnE6vxbbH3sNTlI2dk3Cw4z3IobcsZgqXAu6AFLgLQGLk/X07F
DIyUdrgSgCzLIEKLqrLrFXIOMIK44zAGaurIltNt7IrnWWlA+/YVD+YeL2gHwccq
wT7KXRcrVMZQ1z18djJQ45DpPUC8ErBdL6+P+ftHck90YGFZsfMA5S7jf8X1h08U
IlqdPTmY8t4unKHWVpHbxx9b+xrUuV6KTEXADsllpMV2jQoTLdDECd3vmefYR6tR
3lssgop1m/RzH5OCqvia5Sy2D5fOQObNWDMakwOkVMxOD43lmGCTHstzS2Uo2OFE
QcY79lfZ5NrzKnenUdE5Fd0XJ9kSwQ==
=k0Ab
-----END PGP SIGNATURE-----
Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Add support for ftrace with direct call and ftrace direct call
samples.
- Add support for kernel command lines longer than current 896 bytes
and make its length configurable.
- Add support for BEAR enhancement facility to improve last breaking
event instruction tracking.
- Add kprobes sanity checks and testcases to prevent kprobe in the mid
of an instruction.
- Allow concurrent access to /dev/hwc for the CPUMF users.
- Various ftrace / jump label improvements.
- Convert unwinder tests to KUnit.
- Add s390_iommu_aperture kernel parameter to tweak the limits on
concurrently usable DMA mappings.
- Add ap.useirq AP module option which can be used to disable interrupt
use.
- Add add_disk() error handling support to block device drivers.
- Drop arch specific and use generic implementation of strlcpy and
strrchr.
- Several __pa/__va usages fixes.
- Various cio, crypto, pci, kernel doc and other small fixes and
improvements all over the code.
[ Merge fixup as per https://lore.kernel.org/all/YXAqZ%2FEszRisunQw@osiris/ ]
* tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (63 commits)
s390: make command line configurable
s390: support command lines longer than 896 bytes
s390/kexec_file: move kernel image size check
s390/pci: add s390_iommu_aperture kernel parameter
s390/spinlock: remove incorrect kernel doc indicator
s390/string: use generic strlcpy
s390/string: use generic strrchr
s390/ap: function rework based on compiler warning
s390/cio: make ccw_device_dma_* more robust
s390/vfio-ap: s390/crypto: fix all kernel-doc warnings
s390/hmcdrv: fix kernel doc comments
s390/ap: new module option ap.useirq
s390/cpumf: Allow multiple processes to access /dev/hwc
s390/bitops: return true/false (not 1/0) from bool functions
s390: add support for BEAR enhancement facility
s390: introduce nospec_uses_trampoline()
s390: rename last_break to pgm_last_break
s390/ptrace: add last_break member to pt_regs
s390/sclp: sort out physical vs virtual pointers usage
s390/setup: convert start and end initrd pointers to virtual
...
Merge misc updates from Andrew Morton:
"257 patches.
Subsystems affected by this patch series: scripts, ocfs2, vfs, and
mm (slab-generic, slab, slub, kconfig, dax, kasan, debug, pagecache,
gup, swap, memcg, pagemap, mprotect, mremap, iomap, tracing, vmalloc,
pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, tools,
memblock, oom-kill, hugetlbfs, migration, thp, readahead, nommu, ksm,
vmstat, madvise, memory-hotplug, rmap, zsmalloc, highmem, zram,
cleanups, kfence, and damon)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (257 commits)
mm/damon: remove return value from before_terminate callback
mm/damon: fix a few spelling mistakes in comments and a pr_debug message
mm/damon: simplify stop mechanism
Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions
Docs/admin-guide/mm/damon/start: simplify the content
Docs/admin-guide/mm/damon/start: fix a wrong link
Docs/admin-guide/mm/damon/start: fix wrong example commands
mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on
mm/damon: remove unnecessary variable initialization
Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM
mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM)
selftests/damon: support watermarks
mm/damon/dbgfs: support watermarks
mm/damon/schemes: activate schemes based on a watermarks mechanism
tools/selftests/damon: update for regions prioritization of schemes
mm/damon/dbgfs: support prioritization weights
mm/damon/vaddr,paddr: support pageout prioritization
mm/damon/schemes: prioritize regions within the quotas
mm/damon/selftests: support schemes quotas
mm/damon/dbgfs: support quotas of schemes
...
