sched: Simplify wake_up_*idle*()

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Simplify and make wake_up_if_idle() more robust, also don't iterate
the whole machine with preempt_disable() in it's caller:
wake_up_all_idle_cpus().

This prepares for another wake_up_if_idle() user that needs a full
do_idle() cycle.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Tested-by: Vasily Gorbik <gor@linux.ibm.com> # on s390
Link: https://lkml.kernel.org/r/20210929152428.769328779@infradead.org

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Peter Zijlstra 2021-09-21 22:16:02 +02:00

parent 00619f7c65

commit 8850cb663b

2 changed files with 8 additions and 12 deletions

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14

kernel/sched/core.c

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6

kernel/smp.c

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