[PATCH v1] perf stat: Don't display zero tool counts

[Ian Rogers]

Skip zero counts for tool events.

Reported-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/util/stat-display.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 7329b3340f88..d45d5dcb0e2b 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -931,6 +931,11 @@ static bool should_skip_zero_counter(struct perf_stat_config *config,
 	 */
 	if (config->aggr_mode == AGGR_THREAD && config->system_wide)
 		return true;
+
+	/* Tool events have the software PMU but are only gathered on 1. */
+	if (evsel__is_tool(counter))
+		return true;
+
 	/*
 	 * Skip value 0 when it's an uncore event and the given aggr id
 	 * does not belong to the PMU cpumask.
-- 
2.41.0.585.gd2178a4bd4-goog