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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-26 13:10:23 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-26 17:48:54 +0200
commit19d2e755436054dfc2be640bffc32e427c37ac3d (patch)
treef53c2e93820d1ca6d04e8b42c7bca08af01c9b44
parentf55c555226b1010b249730ec6b232e5470286950 (diff)
perf_counter: Complete counter swap
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>
-rw-r--r--kernel/perf_counter.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index f2f23269658..66ab1e9d129 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -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) \