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freezer,sched: Clean saved_state when restoring it during thaw

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Clean saved_state after using it during thaw. Cleaning the saved_state
allows us to avoid some unnecessary branches in ttwu_state_match.

Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231120-freezer-state-multiple-thaws-v1-2-f2e1dd7ce5a2@quicinc.com
This commit is contained in:
Elliot Berman 2023-11-20 09:36:32 -08:00 committed by Peter Zijlstra
parent 5068d84054
commit 418146e398
1 changed files with 1 additions and 0 deletions
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kernel/freezer.c
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@ -187,6 +187,7 @@ static int __restore_freezer_state(struct task_struct *p, void *arg)
if (state != TASK_RUNNING) {
WRITE_ONCE(p->__state, state);
p->saved_state = TASK_RUNNING;
return 1;
}