Jann Horn 265c03699e sched: Clarify wake_up_q()'s write to task->wake_q.next ...

[ Upstream commit bcc6244e13b4d4903511a1ea84368abf925031c0 ]

Clarify that wake_up_q() does an atomic write to task->wake_q.next, after
which a concurrent __wake_q_add() can immediately overwrite
task->wake_q.next again.

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250129-sched-wakeup-prettier-v1-1-2f51f5f663fa@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-03-22 12:50:41 -07:00

..

autogroup.c

sched/all: Change all BUG_ON() instances in the scheduler to WARN_ON_ONCE()

2022-08-12 11:25:10 +02:00

autogroup.h

sched/headers: Add header guard to kernel/sched/stats.h and kernel/sched/autogroup.h

2022-02-23 08:22:00 +01:00

build_policy.c

sched: Fix missing prototype warnings

2022-05-01 10:03:43 +02:00

build_utility.c

sched: Fix missing prototype warnings

2022-05-01 10:03:43 +02:00

clock.c

Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-06-27 14:14:30 -07:00

completion.c

sched: add a few helpers to wake up tasks on the current cpu

2023-07-17 16:08:08 -07:00

core_sched.c

sched: Rename task_running() to task_on_cpu()

2022-09-07 21:53:47 +02:00

core.c

sched: Clarify wake_up_q()'s write to task->wake_q.next

2025-03-22 12:50:41 -07:00

cpuacct.c

Merge branch 'sched/fast-headers' into sched/core

2022-03-15 09:05:05 +01:00

cpudeadline.c

sched/core: Introduce sched_asym_cpucap_active()

2022-08-02 12:32:45 +02:00

cpudeadline.h

…

cpufreq_schedutil.c

cpufreq: schedutil: Fix superfluous updates caused by need_freq_update

2025-02-08 09:51:53 +01:00

cpufreq.c

sched/headers: Introduce kernel/sched/build_utility.c and build multiple .c files there

2022-02-23 10:58:33 +01:00

cpupri.c

sched/rt: Fix live lock between select_fallback_rq() and RT push

2023-09-28 22:58:13 +02:00

cpupri.h

…

cputime.c

sched/cputime: Fix mul_u64_u64_div_u64() precision for cputime

2024-08-14 13:58:47 +02:00

deadline.c

sched/deadline: Fix warning in migrate_enable for boosted tasks

2024-12-14 20:00:20 +01:00

debug.c

sched/debug: Provide slice length for fair tasks

2025-03-22 12:50:40 -07:00

fair.c

sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

2025-03-13 12:58:32 +01:00

features.h

sched/eevdf: Curb wakeup-preemption

2023-08-17 17:07:07 +02:00

idle.c

sched/fair: Rename check_preempt_curr() to wakeup_preempt()

2024-12-14 20:00:18 +01:00

isolation.c

sched/isolation: Fix boot crash when maxcpus < first housekeeping CPU

2024-06-12 11:11:24 +02:00

loadavg.c

sched/headers: Introduce kernel/sched/build_utility.c and build multiple .c files there

2022-02-23 10:58:33 +01:00

Makefile

sched/headers: Introduce kernel/sched/build_policy.c and build multiple .c files there

2022-02-23 10:58:33 +01:00

membarrier.c

sched/membarrier: reduce the ability to hammer on sys_membarrier

2024-02-23 09:25:27 +01:00

pelt.c

sched/headers: Introduce kernel/sched/build_policy.c and build multiple .c files there

2022-02-23 10:58:33 +01:00

pelt.h

sched/fair: Decay task PELT values during wakeup migration

2022-06-28 09:17:46 +02:00

psi.c

sched: psi: fix bogus pressure spikes from aggregation race

2024-10-10 11:58:03 +02:00

rt.c

sched: Unify runtime accounting across classes

2024-12-14 20:00:19 +01:00

sched-pelt.h

…

sched.h

sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity

2024-12-14 20:00:19 +01:00

smp.h

sched, smp: Trace smp callback causing an IPI

2023-03-24 11:01:29 +01:00

stats.c

profiling: remove profile=sleep support

2024-08-14 13:58:47 +02:00

stats.h

sched: Move psi_account_irqtime() out of update_rq_clock_task() hotpath

2024-07-18 13:21:25 +02:00

stop_task.c

sched: Unify runtime accounting across classes

2024-12-14 20:00:19 +01:00

swait.c

sched: add a few helpers to wake up tasks on the current cpu

2023-07-17 16:08:08 -07:00

topology.c

sched/topology: Rename 'DIE' domain to 'PKG'

2025-02-08 09:51:44 +01:00

wait_bit.c

wait_on_bit: add an acquire memory barrier

2022-08-26 09:30:25 -07:00

wait.c

sched: add a few helpers to wake up tasks on the current cpu

2023-07-17 16:08:08 -07:00