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| author | Peter Zijlstra <peterz@infradead.org> | 2021-06-11 10:28:13 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-18 11:43:07 +0200 |
| commit | 3ba9f93b12361e005dd65fcc8072b42e3189f4f4 (patch) | |
| tree | ff7b3224fb4f03ea17ac76b0d1ad0c2431d0a7ab /kernel/freezer.c | |
| parent | sched: Introduce task_is_running() (diff) | |
| download | linux-3ba9f93b12361e005dd65fcc8072b42e3189f4f4.tar.xz linux-3ba9f93b12361e005dd65fcc8072b42e3189f4f4.zip | |
sched,perf,kvm: Fix preemption condition
When ran from the sched-out path (preempt_notifier or perf_event),
p->state is irrelevant to determine preemption. You can get preempted
with !task_is_running() just fine.
The right indicator for preemption is if the task is still on the
runqueue in the sched-out path.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210611082838.285099381@infradead.org
Diffstat (limited to 'kernel/freezer.c')
0 files changed, 0 insertions, 0 deletions