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tick/nohz: Call tick_nohz_task_switch() with interrupts disabled

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Call tick_nohz_task_switch() slightly earlier after the context switch
to benefit from disabled IRQs. This way the function doesn't need to
disable them once more.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210512232924.150322-10-frederic@kernel.org
This commit is contained in:
Peter Zijlstra
2021-05-13 01:29:23 +02:00
committed by Ingo Molnar
parent a1dfb6311c
commit 0fdcccfafc
2 changed files with 2 additions and 7 deletions
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2
kernel/sched/core.c
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@@ -4212,6 +4212,7 @@ static struct rq *finish_task_switch(struct task_struct *prev)
vtime_task_switch(prev);
perf_event_task_sched_in(prev, current);
finish_task(prev);
tick_nohz_task_switch();
finish_lock_switch(rq);
finish_arch_post_lock_switch();
kcov_finish_switch(current);
@@ -4257,7 +4258,6 @@ static struct rq *finish_task_switch(struct task_struct *prev)
put_task_struct_rcu_user(prev);
}
tick_nohz_task_switch();
return rq;
}