[PATCH 3/5] perf stat: suppress printing std-dev when its 0

[Jim Cromie]

For pretty output only (preserve column for cvs output), dont print
std-deviation when its 0.00.  Do this based upon value, instead of
checking for --no-aggr, since the stats could conceivably be computed
over the runs on each CPU, and theres no reason to preclude that.

Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx>
---
 tools/perf/builtin-stat.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c6e47d2..660bed1 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -528,7 +528,7 @@ static void print_noise_pct(double total, double avg)
 
 	if (csv_output)
 		fprintf(output, "%s%.2f%%", csv_sep, pct);
-	else
+	else if (pct)
 		fprintf(output, "  ( +-%6.2f%% )", pct);
 }
 
-- 
1.7.4.4

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