[PATCH] perf, tools, stat: Quieten failed to read counter message

From: Andi Kleen
Date: Tue Sep 01 2015 - 18:52:57 EST

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Since 3b3eb0445 running perf stat on a system without
backend-stalled-cycles spits out ugly warnings by default. Since that is quite
common, make the message a debug message only. We know
anyways that the counter wasn't read by the normal <unsupported>

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
tools/perf/builtin-stat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index d46dbb1..a96fb5c 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -215,7 +215,7 @@ static void read_counters(bool close_counters)

evlist__for_each(evsel_list, counter) {
if (read_counter(counter))
- pr_warning("failed to read counter %s\n", counter->name);
+ pr_debug("failed to read counter %s\n", counter->name);

if (perf_stat_process_counter(&stat_config, counter))
pr_warning("failed to process counter %s\n", counter->name);

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