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authorFrederic Weisbecker <fweisbec@gmail.com>2010-05-07 02:33:42 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-05-09 13:45:30 +0200
commit90c0e5fc7b73d2575c7367e1da70ff9521718e5e (patch)
tree555df001b47f27ae0a4339725e9ba06175e94ff1 /tools/perf/builtin-lock.c
parent5efe08cf685f33f562566dc68b6077b6f6a4f706 (diff)
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perf lock: Always check min AND max wait time
When a lock is acquired after beeing contended, we update the wait time statistics for the given lock. But if the min wait time is updated, we don't check the max wait time. This is wrong because the first time we update the wait time, we want to update both min and max wait time. Before: Name acquired contended total wait (ns) max wait (ns) min wait (ns) key 8 1 21656 0 21656 After: Name acquired contended total wait (ns) max wait (ns) min wait (ns) key 8 1 21656 21656 21656 Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Diffstat (limited to 'tools/perf/builtin-lock.c')
-rw-r--r--tools/perf/builtin-lock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index d7dde9cbbdf..e549f4547b9 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -496,7 +496,7 @@ report_lock_acquired_event(struct trace_acquired_event *acquired_event,
ls->wait_time_total += contended_term;
if (contended_term < ls->wait_time_min)
ls->wait_time_min = contended_term;
- else if (ls->wait_time_max < contended_term)
+ if (ls->wait_time_max < contended_term)
ls->wait_time_max = contended_term;
break;
case SEQ_STATE_RELEASED: