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perf_counter: Complete counter swap

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Complete the counter swap by indeed switching the times too and
updating the userpage after modifying the counter values.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1246014623.31755.195.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-06-26 13:10:23 +02:00 committed by Ingo Molnar
parent f55c555226
commit 19d2e75543
1 changed files with 6 additions and 1 deletions
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7
kernel/perf_counter.c
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@ -1048,9 +1048,14 @@ static void __perf_counter_sync_stat(struct perf_counter *counter,
value = atomic64_xchg(&counter->count, value);
atomic64_set(&next_counter->count, value);
swap(counter->total_time_enabled, next_counter->total_time_enabled);
swap(counter->total_time_running, next_counter->total_time_running);
/*
* XXX also sync time_enabled and time_running ?
* Since we swizzled the values, update the user visible data too.
*/
perf_counter_update_userpage(counter);
perf_counter_update_userpage(next_counter);
}
#define list_next_entry(pos, member) \