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perf: Simplify group_sched_out()

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Since event_sched_out() clears cpuctx->exclusive upon removal of an
exclusive event (and only group leaders can be exclusive), there is no
point in group_sched_out() trying to do it too. It is impossible for
cpuctx->exclusive to still be set here.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201029162901.904060564@infradead.org
This commit is contained in:
Peter Zijlstra 2020-10-29 16:28:25 +01:00
parent e506d1dac0
commit 8c7855d829
1 changed files with 0 additions and 3 deletions
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3
kernel/events/core.c
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@ -2312,9 +2312,6 @@ group_sched_out(struct perf_event *group_event,
event_sched_out(event, cpuctx, ctx);
perf_pmu_enable(ctx->pmu);
if (group_event->attr.exclusive)
cpuctx->exclusive = 0;
}
#define DETACH_GROUP 0x01UL