linux-kernel - [PATCH 12/19] perf metric: Add events for the current list

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Date:   Sun, 19 Jul 2020 20:13:13 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A. Clarke" <pc@...ibm.com>,
        Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH 12/19] perf metric: Add events for the current list

There's no need to iterate the whole list of groups,
when adding new events. The currently created groups
are the ones we want to add.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/metricgroup.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index bb5757b9419d..332414d93f7a 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -813,6 +813,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
 {
 	struct pmu_event *pe;
 	struct egroup *eg;
+	LIST_HEAD(list);
 	int i, ret;
 	bool has_match = false;
 
@@ -820,7 +821,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
 		has_match = true;
 		eg = NULL;
 
-		ret = add_metric(group_list, pe, metric_no_group, &eg);
+		ret = add_metric(&list, pe, metric_no_group, &eg);
 		if (ret)
 			return ret;
 
@@ -829,7 +830,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
 		 * included in the expression.
 		 */
 		ret = resolve_metric(eg, metric_no_group,
-				     group_list, map);
+				     &list, map);
 		if (ret)
 			return ret;
 	}
@@ -838,7 +839,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
 	if (!has_match)
 		return -EINVAL;
 
-	list_for_each_entry(eg, group_list, nd) {
+	list_for_each_entry(eg, &list, nd) {
 		if (events->len > 0)
 			strbuf_addf(events, ",");
 
@@ -850,6 +851,8 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
 							   &eg->pctx);
 		}
 	}
+
+	list_splice(&list, group_list);
 	return 0;
 }
 
-- 
2.25.4