From 19d2e755436054dfc2be640bffc32e427c37ac3d Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 26 Jun 2009 13:10:23 +0200 Subject: 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 Cc: Paul Mackerras LKML-Reference: <1246014623.31755.195.camel@twins> Signed-off-by: Ingo Molnar --- kernel/perf_counter.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'kernel') diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index f2f232696587..66ab1e9d1294 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) \ -- cgit v1.2.3