Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'next' into for-linus

Prepare input updates for 7.1 merge window.

Merge tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
"Fair scheduling updates:
- Skip SCHED_IDLE rq for SCHED_IDLE

Merge tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
"Fair scheduling updates:
- Skip SCHED_IDLE rq for SCHED_IDLE tasks (Christian Loehle)
- Remove superfluous rcu_read_lock() in the wakeup path (K Prateek Nayak)
- Simplify the entry condition for update_idle_cpu_scan() (K Prateek Nayak)
- Simplify SIS_UTIL handling in select_idle_cpu() (K Prateek Nayak)
- Avoid overflow in enqueue_entity() (K Prateek Nayak)
- Update overutilized detection (Vincent Guittot)
- Prevent negative lag increase during delayed dequeue (Vincent Guittot)
- Clear buddies for preempt_short (Vincent Guittot)
- Implement more complex proportional newidle balance (Peter Zijlstra)
- Increase weight bits for avg_vruntime (Peter Zijlstra)
- Use full weight to __calc_delta() (Peter Zijlstra)

RT and DL scheduling updates:
- Fix incorrect schedstats for rt and dl thread (Dengjun Su)
- Skip group schedulable check with rt_group_sched=0 (Michal Koutný)
- Move group schedulability check to sched_rt_global_validate()
(Michal Koutný)
- Add reporting of runtime left & abs deadline to sched_getattr()
for DEADLINE tasks (Tommaso Cucinotta)

Scheduling topology updates by K Prateek Nayak:
- Compute sd_weight considering cpuset partitions
- Extract "imb_numa_nr" calculation into a separate helper
- Allocate per-CPU sched_domain_shared in s_data
- Switch to assigning "sd->shared" from s_data
- Remove sched_domain_shared allocation with sd_data

Energy-aware scheduling updates:
- Filter false overloaded_group case for EAS (Vincent Guittot)
- PM: EM: Switch to rcu_dereference_all() in wakeup path
(Dietmar Eggemann)

Infrastructure updates:
- Replace use of system_unbound_wq with system_dfl_wq (Marco Crivellari)

Proxy scheduling updates by John Stultz:
- Make class_schedulers avoid pushing current, and get rid of proxy_tag_curr()
- Minimise repeated sched_proxy_exec() checking
- Fix potentially missing balancing with Proxy Exec
- Fix and improve task::blocked_on et al handling
- Add assert_balance_callbacks_empty() helper
- Add logic to zap balancing callbacks if we pick again
- Move attach_one_task() and attach_task() helpers to sched.h
- Handle blocked-waiter migration (and return migration)
- Add K Prateek Nayak to scheduler reviewers for proxy execution

Misc cleanups and fixes by John Stultz, Joseph Salisbury, Peter
Zijlstra, K Prateek Nayak, Michal Koutný, Randy Dunlap, Shrikanth
Hegde, Vincent Guittot, Zhan Xusheng, Xie Yuanbin and Vincent Guittot"

* tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
sched/eevdf: Clear buddies for preempt_short
sched/rt: Cleanup global RT bandwidth functions
sched/rt: Move group schedulability check to sched_rt_global_validate()
sched/rt: Skip group schedulable check with rt_group_sched=0
sched/fair: Avoid overflow in enqueue_entity()
sched: Use u64 for bandwidth ratio calculations
sched/fair: Prevent negative lag increase during delayed dequeue
sched/fair: Use sched_energy_enabled()
sched: Handle blocked-waiter migration (and return migration)
sched: Move attach_one_task and attach_task helpers to sched.h
sched: Add logic to zap balance callbacks if we pick again
sched: Add assert_balance_callbacks_empty helper
sched/locking: Add special p->blocked_on==PROXY_WAKING value for proxy return-migration
sched: Fix modifying donor->blocked on without proper locking
locking: Add task::blocked_lock to serialize blocked_on state
sched: Fix potentially missing balancing with Proxy Exec
sched: Minimise repeated sched_proxy_exec() checking
sched: Make class_schedulers avoid pushing current, and get rid of proxy_tag_curr()
MAINTAINERS: Add K Prateek Nayak to scheduler reviewers
sched/core: Get this cpu once in ttwu_queue_cond()
...

show more ...

locking: Add task::blocked_lock to serialize blocked_on state

So far, we have been able to utilize the mutex::wait_lock
for serializing the blocked_on state, but when we move to
proxying across runq

locking: Add task::blocked_lock to serialize blocked_on state

So far, we have been able to utilize the mutex::wait_lock
for serializing the blocked_on state, but when we move to
proxying across runqueues, we will need to add more state
and a way to serialize changes to this state in contexts
where we don't hold the mutex::wait_lock.

So introduce the task::blocked_lock, which nests under the
mutex::wait_lock in the locking order, and rework the locking
to use it.

Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://patch.msgid.link/20260324191337.1841376-5-jstultz@google.com

show more ...

Merge tag 'v7.0-rc3' into next

Sync up with the mainline to brig up the latest changes, specifically
changes to ALPS driver.

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THP
support.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>

Merge drm/drm-next into drm-intel-next

Sync with v7.0-rc1 which contains a few treewide changes affecting i915.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-misc-next

Let's merge 7.0-rc1 to start the new drm-misc-next window

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

7.0-rc1 was just released, let's merge it to kick the new release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
"Scheduler Kconfig space updates:

- Further consolidate confi

Merge tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
"Scheduler Kconfig space updates:

- Further consolidate configurable preemption modes (Peter Zijlstra)

Reduce the number of architectures that are allowed to offer
PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number of
preemption models from four to just two: 'full' and 'lazy' on
up-to-date architectures (arm64, loongarch, powerpc, riscv, s390,
x86).

None and voluntary are only available as legacy features on
platforms that don't implement lazy preemption yet, or which don't
even support preemption.

The goal is to eventually remove cond_resched() and voluntary
preemption altogether.

RSEQ based 'scheduler time slice extension' support (Thomas Gleixner
and Peter Zijlstra):

This allows a thread to request a time slice extension when it enters
a critical section to avoid contention on a resource when the thread
is scheduled out inside of the critical section.

- Add fields and constants for time slice extension
- Provide static branch for time slice extensions
- Add statistics for time slice extensions
- Add prctl() to enable time slice extensions
- Implement sys_rseq_slice_yield()
- Implement syscall entry work for time slice extensions
- Implement time slice extension enforcement timer
- Reset slice extension when scheduled
- Implement rseq_grant_slice_extension()
- entry: Hook up rseq time slice extension
- selftests: Implement time slice extension test
- Allow registering RSEQ with slice extension
- Move slice_ext_nsec to debugfs
- Lower default slice extension
- selftests/rseq: Add rseq slice histogram script

Scheduler performance/scalability improvements:

- Update rq->avg_idle when a task is moved to an idle CPU, which
improves the scalability of various workloads (Shubhang Kaushik)

- Reorder fields in 'struct rq' for better caching (Blake Jones)

- Fair scheduler SMP NOHZ balancing code speedups (Shrikanth Hegde):
- Move checking for nohz cpus after time check
- Change likelyhood of nohz.nr_cpus
- Remove nohz.nr_cpus and use weight of cpumask instead

- Avoid false sharing for sched_clock_irqtime (Wangyang Guo)

- Cleanups (Yury Norov):
- Drop useless cpumask_empty() in find_energy_efficient_cpu()
- Simplify task_numa_find_cpu()
- Use cpumask_weight_and() in sched_balance_find_dst_group()

DL scheduler updates:

- Add a deadline server for sched_ext tasks (by Andrea Righi and Joel
Fernandes, with fixes by Peter Zijlstra)

RT scheduler updates:

- Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang)

Entry code updates and performance improvements (Jinjie Ruan)

This is part of the scheduler tree in this cycle due to inter-
dependencies with the RSEQ based time slice extension work:

- Remove unused syscall argument from syscall_trace_enter()
- Rework syscall_exit_to_user_mode_work() for architecture reuse
- Add arch_ptrace_report_syscall_entry/exit()
- Inline syscall_exit_work() and syscall_trace_enter()

Scheduler core updates (Peter Zijlstra):

- Rework sched_class::wakeup_preempt() and rq_modified_*()
- Avoid rq->lock bouncing in sched_balance_newidle()
- Rename rcu_dereference_check_sched_domain() =>
rcu_dereference_sched_domain()
- <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper

Fair scheduler updates/refactoring (Peter Zijlstra and Ingo Molnar):

- Fold the sched_avg update
- Change rcu_dereference_check_sched_domain() to rcu-sched
- Switch to rcu_dereference_all()
- Remove superfluous rcu_read_lock()
- Limit hrtick work
- Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks
- Clean up comments in 'struct cfs_rq'
- Separate se->vlag from se->vprot
- Rename cfs_rq::avg_load to cfs_rq::sum_weight
- Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions
- Introduce and use the vruntime_cmp() and vruntime_op() wrappers for
wrapped-signed aritmetics
- Sort out 'blocked_load*' namespace noise

Scheduler debugging code updates:

- Export hidden tracepoints to modules (Gabriele Monaco)

- Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
(Fushuai Wang)

- Add assertions to QUEUE_CLASS (Peter Zijlstra)

- hrtimer: Fix tracing oddity (Thomas Gleixner)

Misc fixes and cleanups:

- Re-evaluate scheduling when migrating queued tasks out of throttled
cgroups (Zicheng Qu)

- Remove task_struct->faults_disabled_mapping (Christoph Hellwig)

- Fix math notation errors in avg_vruntime comment (Zhan Xusheng)

- sched/cpufreq: Use %pe format for PTR_ERR() printing
(zenghongling)"

* tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
sched: Re-evaluate scheduling when migrating queued tasks out of throttled cgroups
sched/cpufreq: Use %pe format for PTR_ERR() printing
sched/rt: Skip currently executing CPU in rto_next_cpu()
sched/clock: Avoid false sharing for sched_clock_irqtime
selftests/sched_ext: Add test for DL server total_bw consistency
selftests/sched_ext: Add test for sched_ext dl_server
sched/debug: Fix dl_server (re)start conditions
sched/debug: Add support to change sched_ext server params
sched_ext: Add a DL server for sched_ext tasks
sched/debug: Stop and start server based on if it was active
sched/debug: Fix updating of ppos on server write ops
sched/deadline: Clear the defer params
entry: Inline syscall_exit_work() and syscall_trace_enter()
entry: Add arch_ptrace_report_syscall_entry/exit()
entry: Rework syscall_exit_to_user_mode_work() for architecture reuse
entry: Remove unused syscall argument from syscall_trace_enter()
sched: remove task_struct->faults_disabled_mapping
sched: Update rq->avg_idle when a task is moved to an idle CPU
selftests/rseq: Add rseq slice histogram script
hrtimer: Fix trace oddity
...

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Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Boqun Feng:

- RCU Tasks Trace:

Re-implement RCU tasks trace in term of SRCU-fast,

Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Boqun Feng:

- RCU Tasks Trace:

Re-implement RCU tasks trace in term of SRCU-fast, not only more than
500 lines of code are saved because of the reimplementation, a new
set of API, rcu_read_{,un}lock_tasks_trace(), becomes possible as
well. Compared to the previous rcu_read_{,un}lock_trace(), the new
API avoid the task_struct accesses thanks to the SRCU-fast semantics.

As a result, the old rcu_read{,un}lock_trace() API is now deprecated.

- RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and
progress showing metrics)
- Add context checks to rcu_torture_timer()
- Make config2csv.sh properly handle comments in .boot files
- Include commit discription in testid.txt

- Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's
CPU QS early
- Use suitable gfp_flags for the init_srcu_struct_nodes()
- Fix rcu_read_unlock() deadloop due to softirq
- Correctly compute probability to invoke ->exp_current()
in rcutorture
- Make expedited RCU CPU stall warnings detect stall-end races

- RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback
overload handling
- Extract nocb_defer_wakeup_cancel() helper

* tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (25 commits)
rcu/nocb: Extract nocb_defer_wakeup_cancel() helper
rcu/nocb: Remove dead callback overload handling
rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path
rcu: Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early
srcu: Use suitable gfp_flags for the init_srcu_struct_nodes()
rcu: Fix rcu_read_unlock() deadloop due to softirq
rcutorture: Correctly compute probability to invoke ->exp_current()
rcu: Make expedited RCU CPU stall warnings detect stall-end races
rcutorture: Add --kill-previous option to terminate previous kvm.sh runs
rcutorture: Prevent concurrent kvm.sh runs on same source tree
torture: Include commit discription in testid.txt
torture: Make config2csv.sh properly handle comments in .boot files
torture: Make kvm-series.sh give run numbers and totals
torture: Make kvm-series.sh give build numbers and totals
torture: Parallelize kvm-series.sh guest-OS execution
rcutorture: Add context checks to rcu_torture_timer()
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch: Deprecate rcu_read_{,un}lock_trace()
rcu: Update Requirements.rst for RCU Tasks Trace
...

show more ...

sched: remove task_struct->faults_disabled_mapping

This reverts commit 2b69987be575 ("sched: Add
task_struct->faults_disabled_mapping"), which added this field without
review or maintainer signoff.

sched: remove task_struct->faults_disabled_mapping

This reverts commit 2b69987be575 ("sched: Add
task_struct->faults_disabled_mapping"), which added this field without
review or maintainer signoff. With bcachefs removed from the
tree it is also unused now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260122085223.487092-1-hch@lst.de

show more ...

Merge tag 'v6.19-rc1' into msm-next

Merge Linux 6.19-rc1 in order to catch up with other changes (e.g. UBWC
config database defining UBWC_6).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.q

Merge tag 'v6.19-rc1' into msm-next

Merge Linux 6.19-rc1 in order to catch up with other changes (e.g. UBWC
config database defining UBWC_6).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

show more ...

Merge branch 'rcu-tasks-trace.20260101a'

* rcu-tasks-trace.20260101a:
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch

Merge branch 'rcu-tasks-trace.20260101a'

* rcu-tasks-trace.20260101a:
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch: Deprecate rcu_read_{,un}lock_trace()
rcu: Update Requirements.rst for RCU Tasks Trace
rcu: Add noinstr-fast rcu_read_{,un}lock_tasks_trace() APIs
rcu: Move rcu_tasks_trace_srcu_struct out of #ifdef CONFIG_TASKS_RCU_GENERIC
rcu: Clean up after the SRCU-fastification of RCU Tasks Trace
context_tracking: Remove rcu_task_trace_heavyweight_{enter,exit}()
rcu: Re-implement RCU Tasks Trace in terms of SRCU-fast

show more ...

rcu: Clean up after the SRCU-fastification of RCU Tasks Trace

Now that RCU Tasks Trace has been re-implemented in terms of SRCU-fast,
the ->trc_ipi_to_cpu, ->trc_blkd_cpu, ->trc_blkd_node, ->trc_hol

rcu: Clean up after the SRCU-fastification of RCU Tasks Trace

Now that RCU Tasks Trace has been re-implemented in terms of SRCU-fast,
the ->trc_ipi_to_cpu, ->trc_blkd_cpu, ->trc_blkd_node, ->trc_holdout_list,
and ->trc_reader_special task_struct fields are no longer used.

In addition, the rcu_tasks_trace_qs(), rcu_tasks_trace_qs_blkd(),
exit_tasks_rcu_finish_trace(), and rcu_spawn_tasks_trace_kthread(),
show_rcu_tasks_trace_gp_kthread(), rcu_tasks_trace_get_gp_data(),
rcu_tasks_trace_torture_stats_print(), and get_rcu_tasks_trace_gp_kthread()
functions and all the other functions that they invoke are no longer used.

Also, the TRC_NEED_QS and TRC_NEED_QS_CHECKED CPP macros are no longer used.
Neither are the rcu_tasks_trace_lazy_ms and rcu_task_ipi_delay rcupdate
module parameters and the TASKS_TRACE_RCU_READ_MB Kconfig option.

This commit therefore removes all of them.

[ paulmck: Apply Alexei Starovoitov feedback. ]

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: bpf@vger.kernel.org
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>

show more ...

Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.19

We've been quite busy with fixes since the merge window, though

Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.19

We've been quite busy with fixes since the merge window, though not in
any particularly exciting ways - the standout thing is the fix for _SX
controls which were broken by a change to how we do clamping, otherwise
it's all fairly run of the mill fixes and quirks.

show more ...

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 6.19-rc1. An important upstream bugfix and
to help unblock PTL CI.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-intel-next

Sync-up some display code needed for Async flips refactor.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Pull in rc1 to include all changes since the merge window closed,
and grab all fixes and changes from drm/drm-next.

Signed-off-by: M

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Pull in rc1 to include all changes since the merge window closed,
and grab all fixes and changes from drm/drm-next.

Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>

show more ...

Merge drm/drm-next into drm-misc-next

Let's kickstart the v6.20 (7.0?) release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge tag 'v6.18' into next

Sync up with the mainline to bring in the latest APIs.

Merge tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull rseq updates from Thomas Gleixner:
"A large overhaul of the restartable sequences and CID management:

Merge tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull rseq updates from Thomas Gleixner:
"A large overhaul of the restartable sequences and CID management:

The recent enablement of RSEQ in glibc resulted in regressions which
are caused by the related overhead. It turned out that the decision to
invoke the exit to user work was not really a decision. More or less
each context switch caused that. There is a long list of small issues
which sums up nicely and results in a 3-4% regression in I/O
benchmarks.

The other detail which caused issues due to extra work in context
switch and task migration is the CID (memory context ID) management.
It also requires to use a task work to consolidate the CID space,
which is executed in the context of an arbitrary task and results in
sporadic uncontrolled exit latencies.

The rewrite addresses this by:

- Removing deprecated and long unsupported functionality

- Moving the related data into dedicated data structures which are
optimized for fast path processing.

- Caching values so actual decisions can be made

- Replacing the current implementation with a optimized inlined
variant.

- Separating fast and slow path for architectures which use the
generic entry code, so that only fault and error handling goes into
the TIF_NOTIFY_RESUME handler.

- Rewriting the CID management so that it becomes mostly invisible in
the context switch path. That moves the work of switching modes
into the fork/exit path, which is a reasonable tradeoff. That work
is only required when a process creates more threads than the
cpuset it is allowed to run on or when enough threads exit after
that. An artificial thread pool benchmarks which triggers this did
not degrade, it actually improved significantly.

The main effect in migration heavy scenarios is that runqueue lock
held time and therefore contention goes down significantly"

* tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/mmcid: Switch over to the new mechanism
sched/mmcid: Implement deferred mode change
irqwork: Move data struct to a types header
sched/mmcid: Provide CID ownership mode fixup functions
sched/mmcid: Provide new scheduler CID mechanism
sched/mmcid: Introduce per task/CPU ownership infrastructure
sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex
sched/mmcid: Provide precomputed maximal value
sched/mmcid: Move initialization out of line
signal: Move MMCID exit out of sighand lock
sched/mmcid: Convert mm CID mask to a bitmap
cpumask: Cache num_possible_cpus()
sched/mmcid: Use cpumask_weighted_or()
cpumask: Introduce cpumask_weighted_or()
sched/mmcid: Prevent pointless work in mm_update_cpus_allowed()
sched/mmcid: Move scheduler code out of global header
sched: Fixup whitespace damage
sched/mmcid: Cacheline align MM CID storage
sched/mmcid: Use proper data structures
sched/mmcid: Revert the complex CID management
...

show more ...

Merge tag 'kernel-6.19-rc1.cred' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull cred guard updates from Christian Brauner:
"This contains substantial credential infrastructure improv

Merge tag 'kernel-6.19-rc1.cred' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull cred guard updates from Christian Brauner:
"This contains substantial credential infrastructure improvements
adding guard-based credential management that simplifies code and
eliminates manual reference counting in many subsystems.

Features:

- Kernel Credential Guards

Add with_kernel_creds() and scoped_with_kernel_creds() guards that
allow using the kernel credentials without allocating and copying
them. This was requested by Linus after seeing repeated
prepare_kernel_creds() calls that duplicate the kernel credentials
only to drop them again later.

The new guards completely avoid the allocation and never expose the
temporary variable to hold the kernel credentials anywhere in
callers.

- Generic Credential Guards

Add scoped_with_creds() guards for the common override_creds() and
revert_creds() pattern. This builds on earlier work that made
override_creds()/revert_creds() completely reference count free.

- Prepare Credential Guards

Add prepare credential guards for the more complex pattern of
preparing a new set of credentials and overriding the current
credentials with them:
- prepare_creds()
- modify new creds
- override_creds()
- revert_creds()
- put_cred()

Cleanups:

- Make init_cred static since it should not be directly accessed

- Add kernel_cred() helper to properly access the kernel credentials

- Fix scoped_class() macro that was introduced two cycles ago

- coredump: split out do_coredump() from vfs_coredump() for cleaner
credential handling

- coredump: move revert_cred() before coredump_cleanup()

- coredump: mark struct mm_struct as const

- coredump: pass struct linux_binfmt as const

- sev-dev: use guard for path"

* tag 'kernel-6.19-rc1.cred' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (36 commits)
trace: use override credential guard
trace: use prepare credential guard
coredump: use override credential guard
coredump: use prepare credential guard
coredump: split out do_coredump() from vfs_coredump()
coredump: mark struct mm_struct as const
coredump: pass struct linux_binfmt as const
coredump: move revert_cred() before coredump_cleanup()
sev-dev: use override credential guards
sev-dev: use prepare credential guard
sev-dev: use guard for path
cred: add prepare credential guard
net/dns_resolver: use credential guards in dns_query()
cgroup: use credential guards in cgroup_attach_permissions()
act: use credential guards in acct_write_process()
smb: use credential guards in cifs_get_spnego_key()
nfs: use credential guards in nfs_idmap_get_key()
nfs: use credential guards in nfs_local_call_write()
nfs: use credential guards in nfs_local_call_read()
erofs: use credential guards
...

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Merge branch 'objtool/core'

Bring in the UDB and objtool data annotations to avoid conflicts while further extending the bug exceptions.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>

sched/mmcid: Use proper data structures

Having a lot of CID functionality specific members in struct task_struct
and struct mm_struct is not really making the code easier to read.

Encapsulate the C

sched/mmcid: Use proper data structures

Having a lot of CID functionality specific members in struct task_struct
and struct mm_struct is not really making the code easier to read.

Encapsulate the CID specific parts in data structures and keep them
separate from the stuff they are embedded in.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251119172549.131573768@linutronix.de

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