From 90c0e5fc7b73d2575c7367e1da70ff9521718e5e Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 7 May 2010 02:33:42 +0200 Subject: 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 Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: Hitoshi Mitake --- tools/perf/builtin-lock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf') 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: -- cgit v1.2.3-70-g09d2