[PATCH v3 8/8] perf stat: Disable metric thresholds for CSV/JSON metric-only mode

[Ian Rogers <irogers@google.com>]

These modes don't use the threshold, so don't compute it saving time
and potentially reducing events.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/builtin-stat.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index b5e18853982c..60d747c2e0e3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -2561,6 +2561,14 @@ int cmd_stat(int argc, const char **argv)
 		goto out;
 	}
 
+	if (stat_config.metric_only && (stat_config.csv_output || stat_config.json_output)) {
+		/*
+		 * Current metric-only CSV and JSON output doesn't display the
+		 * metric threshold so don't compute it.
+		 */
+		stat_config.metric_no_threshold = true;
+	}
+
 	if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
 		fprintf(stderr, "--table is only supported with -r\n");
 		parse_options_usage(stat_usage, stat_options, "r", 1);
-- 
2.47.0.105.g07ac214952-goog