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perf: Only update context time when active 

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dvyukov@google.com
Cc: eranian@google.com
Cc: oleg@redhat.com
Cc: panand@redhat.com
Cc: sasha.levin@oracle.com
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160224174947.860690919@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2016-02-24 18:45:43 +01:00 committed by Ingo Molnar
parent a4f4bb6d0c
commit 6f932e5be1
1 changed files with 6 additions and 6 deletions
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12
kernel/events/core.c
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@ -2170,12 +2170,12 @@ perf_install_in_context(struct perf_event_context *ctx,
raw_spin_unlock_irq(&ctx->lock);
return;
}
update_context_time(ctx);
/*
* Update cgrp time only if current cgrp matches event->cgrp.
* Must be done before calling add_event_to_ctx().
*/
update_cgrp_time_from_event(event);
if (ctx->is_active) {
update_context_time(ctx);
update_cgrp_time_from_event(event);
}
add_event_to_ctx(event, ctx);
raw_spin_unlock_irq(&ctx->lock);