aboutsummaryrefslogtreecommitdiffstats
path: root/tools
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2009-09-22 14:53:51 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-22 15:01:47 +0200
commitc7f7fea30b7e52c9d4b9cef271110a98d59adcbc (patch)
treeaa57c1290455298d178ed6880cd8157a3e738abd /tools
parenta8f90e906783f1f815120eefe813b23cb396e9bd (diff)
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.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 16af2d82e85..e5f6ece65a1 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);
}
}