Messages in this thread Patch in this message | | | Date | Tue, 22 Sep 2009 13:34:29 GMT | From | tip-bot for Ingo Molnar <> | Subject | [tip:perf/urgent] perf stat: Fix zero total printouts |
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Commit-ID: c7f7fea30b7e52c9d4b9cef271110a98d59adcbc Gitweb: http://git.kernel.org/tip/c7f7fea30b7e52c9d4b9cef271110a98d59adcbc Author: Ingo Molnar <mingo@elte.hu> AuthorDate: Tue, 22 Sep 2009 14:53:51 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Tue, 22 Sep 2009 15:01:47 +0200
perf stat: Fix zero total printouts
Before:
0 sched:sched_switch # nan M/sec
After:
0 sched:sched_switch # 0.000 M/sec
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- tools/perf/builtin-stat.c | 18 ++++++++++++++---- 1 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 16af2d8..e5f6ece 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -338,14 +338,24 @@ static void nsec_printout(int counter, double avg) static void abs_printout(int counter, double avg) { + double total, ratio = 0.0; + fprintf(stderr, " %14.0f %-24s", avg, event_name(counter)); if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) { - fprintf(stderr, " # %10.3f IPC ", - avg / avg_stats(&runtime_cycles_stats)); + total = avg_stats(&runtime_cycles_stats); + + if (total) + ratio = avg / total; + + fprintf(stderr, " # %10.3f IPC ", ratio); } else { - fprintf(stderr, " # %10.3f M/sec", - 1000.0 * avg / avg_stats(&runtime_nsecs_stats)); + total = avg_stats(&runtime_nsecs_stats); + + if (total) + ratio = 1000.0 * avg / total; + + fprintf(stderr, " # %10.3f M/sec", ratio); } }
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