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| author | Ingo Molnar <mingo@elte.hu> | 2009-09-22 14:53:51 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-22 15:01:47 +0200 |
| commit | c7f7fea30b7e52c9d4b9cef271110a98d59adcbc (patch) | |
| tree | aa57c1290455298d178ed6880cd8157a3e738abd /tools | |
| parent | a8f90e906783f1f815120eefe813b23cb396e9bd (diff) | |
| download | kernel_samsung_smdk4412-c7f7fea30b7e52c9d4b9cef271110a98d59adcbc.zip kernel_samsung_smdk4412-c7f7fea30b7e52c9d4b9cef271110a98d59adcbc.tar.gz kernel_samsung_smdk4412-c7f7fea30b7e52c9d4b9cef271110a98d59adcbc.tar.bz2 | |
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | 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); } } |