linux/kernel/sched
Peter Zijlstra 7e406d1ff3 sched: Avoid double preemption in __cond_resched_*lock*()
For PREEMPT/DYNAMIC_PREEMPT the *_unlock() will already trigger a
preemption, no point in then calling preempt_schedule_common()
*again*.

Use _cond_resched() instead, since this is a NOP for the preemptible
configs while it provide a preemption point for the others.

Reported-by: xuhaifeng <xuhaifeng@oppo.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YcGnvDEYBwOiV0cR@hirez.programming.kicks-ass.net
2022-01-18 12:09:59 +01:00
..
autogroup.c sched/fair: Prevent dead task groups from regaining cfs_rq's 2021-11-11 13:09:33 +01:00
autogroup.h
clock.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
completion.c completion: Use lockdep_assert_RT_in_threaded_ctx() in complete_all() 2020-03-23 18:40:25 +01:00
core_sched.c sched/core: Accounting forceidle time for all tasks except idle task 2022-01-18 12:09:59 +01:00
core.c sched: Avoid double preemption in __cond_resched_*lock*() 2022-01-18 12:09:59 +01:00
cpuacct.c sched/cpuacct: Make user/system times in cpuacct.stat more precise 2021-11-23 09:55:22 +01:00
cpudeadline.c sched,rt: Use the full cpumask for balancing 2020-11-10 18:39:00 +01:00
cpudeadline.h
cpufreq_schedutil.c sched/fair: Replace CFS internal cpu_util() with cpu_util_cfs() 2021-12-11 09:10:00 +01:00
cpufreq.c cpufreq: Avoid leaving stale IRQ work items during CPU offline 2019-12-12 17:59:43 +01:00
cpupri.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
cpupri.h sched/cpupri: Add CPUPRI_HIGHER 2020-10-29 11:00:30 +01:00
cputime.c Peter Zijlstra says: 2022-01-11 17:14:59 -08:00
deadline.c sched/dl: Support schedstats for deadline sched class 2021-10-05 15:51:53 +02:00
debug.c sched/core: Forced idle accounting 2021-11-17 14:49:00 +01:00
fair.c sched/fair: Fix all kernel-doc warnings 2022-01-18 12:09:59 +01:00
features.h sched: Disable TTWU_QUEUE on RT 2021-10-05 15:52:12 +02:00
idle.c sched/idle: Make the idle timer expire in hard interrupt context 2021-09-09 10:36:16 +02:00
isolation.c sched/isolation: Reconcile rcu_nocbs= and nohz_full= 2021-05-13 14:12:47 +02:00
loadavg.c sched: Make multiple runqueue task counters 32-bit 2021-05-12 21:34:17 +02:00
Makefile sched, kcsan: Enable memory barrier instrumentation 2021-12-09 16:42:28 -08:00
membarrier.c sched/membarrier: fix missing local execution of ipi_sync_rq_state() 2021-03-06 12:40:21 +01:00
pelt.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
pelt.h sched/pelt: Relax the sync of util_sum with util_avg 2022-01-18 12:09:58 +01:00
psi.c psi: Fix uaf issue when psi trigger is destroyed while being polled 2022-01-18 12:09:57 +01:00
rt.c sched/rt: Try to restart rt period timer when rt runtime exceeded 2021-12-07 15:14:10 +01:00
sched-pelt.h
sched.h sched/fair: Replace CFS internal cpu_util() with cpu_util_cfs() 2021-12-11 09:10:00 +01:00
smp.h sched/headers: Split out open-coded prototypes into kernel/sched/smp.h 2020-05-28 11:03:20 +02:00
stats.c sched: Introduce task block time in schedstats 2021-10-05 15:51:48 +02:00
stats.h psi: Fix PSI_MEM_FULL state when tasks are in memstall and doing reclaim 2021-11-17 14:49:00 +01:00
stop_task.c sched: Make struct sched_statistics independent of fair sched class 2021-10-05 15:51:45 +02:00
swait.c sched/swait: Prepare usage in completions 2020-03-21 16:00:23 +01:00
topology.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
wait_bit.c sched/wait: fix ___wait_var_event(exclusive) 2019-12-17 13:32:50 +01:00
wait.c wait: add wake_up_pollfree() 2021-12-09 10:49:56 -08:00