From: Weilin Wang <weilin.wang@intel.com>

Add a cmd option to allow user to choose this new metric grouping method.

$ perf stat -M TopdownL1 -a --hardware-grouping

Signed-off-by: Weilin Wang <weilin.wang@intel.com>
---
 tools/perf/builtin-stat.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a7a8018c3511..2f9fe54248a3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1256,6 +1256,8 @@ static struct option stat_options[] = {
 		       "don't try to share events between metrics in a group"),
 	OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
 		       "don't try to share events between metrics in a group  "),
+	OPT_BOOLEAN(0, "hardware-grouping", &stat_config.hardware_aware_grouping,
+				"Use hardware aware metric grouping method"),
 	OPT_BOOLEAN(0, "topdown", &topdown_run,
 			"measure top-down statistics"),
 	OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
@@ -2506,9 +2508,6 @@ int cmd_stat(int argc, const char **argv)
 					(const char **) stat_usage,
 					PARSE_OPT_STOP_AT_NON_OPTION);
 
-	/* Set hardware_aware_grouping to false on default before completely enable it.*/
-	stat_config.hardware_aware_grouping = false;
-
 	if (stat_config.csv_sep) {
 		stat_config.csv_output = true;
 		if (!strcmp(stat_config.csv_sep, "\\t"))
-- 
2.39.3