[v2,1/4] perf: Simplify group_sched_out()
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Message ID 20201029162901.904060564@infradead.org
State Accepted
Commit 8c7855d82933bab7fa5e96f0e568fc125c2e1ab4
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Series
  • perf: Fix perf_event_attr::exclusive rotation
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Commit Message

Peter Zijlstra Oct. 29, 2020, 4:27 p.m. UTC
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>
---
 kernel/events/core.c |    3 ---
 1 file changed, 3 deletions(-)

Patch
diff mbox series

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2312,9 +2312,6 @@  group_sched_out(struct perf_event *group
 		event_sched_out(event, cpuctx, ctx);
 
 	perf_pmu_enable(ctx->pmu);
-
-	if (group_event->attr.exclusive)
-		cpuctx->exclusive = 0;
 }
 
 #define DETACH_GROUP	0x01UL