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| author |   Peter Zijlstra <peterz@infradead.org> | 2021-12-25 01:04:57 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-01-18 12:09:59 +0100 |
| commit | 7e406d1ff39b8ee574036418a5043c86723170cf (patch) | |
| tree | be7b54af0c125126592596a0a37b95bb3d875355 /include/linux/sched.h | |
| parent | sched/fair: Fix all kernel-doc warnings (diff) | |
| download | linux-dev-7e406d1ff39b8ee574036418a5043c86723170cf.tar.xz linux-dev-7e406d1ff39b8ee574036418a5043c86723170cf.zip | |
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
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions