[PATCH v2 4/4] perf stat: Display metric-only for 0 counters

[Ian Rogers]

0 counters may occur in hypervisor settings but metric-only output is
always expected. This resolves an issue in the "perf stat STD output
linter" test.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/util/stat-display.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 5ac9854f8c58..6d02f84c5691 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -913,6 +913,9 @@ static bool should_skip_zero_counter(struct perf_stat_config *config,
 	if (verbose == 0 && counter->skippable && !counter->supported)
 		return true;
 
+	/* Metric only counts won't be displayed but the metric wants to be computed. */
+	if (config->metric_only)
+		return false;
 	/*
 	 * Skip value 0 when enabling --per-thread globally,
 	 * otherwise it will have too many 0 output.
-- 
2.51.2.1041.gc1ab5b90ca-goog