linux-kernel - [PATCH 14/14] perf tests: Add parse metric test for frontend metric

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Date:   Mon, 25 May 2020 00:42:19 +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>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 14/14] perf tests: Add parse metric test for frontend metric

Adding new metri test for frontend metric. It's stolen
from x86 pmu events.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/tests/parse-metric.c | 46 +++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
index 3005d27c5c48..38f20850bba3 100644
--- a/tools/perf/tests/parse-metric.c
+++ b/tools/perf/tests/parse-metric.c
@@ -15,6 +15,11 @@ static struct pmu_event pme_test[] = {
 	.metric_expr	= "inst_retired.any / cpu_clk_unhalted.thread",
 	.metric_name	= "IPC",
 },
+{
+	.metric_expr	= "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
+			  "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
+	.metric_name	= "Frontend_Bound_SMT",
+},
 };
 
 static struct pmu_events_map map = {
@@ -110,8 +115,49 @@ static int test_ipc(void)
 	return 0;
 }
 
+static int test_frontend(void)
+{
+	double ratio;
+	struct rblist metric_events = { 0 };
+	struct evlist *evlist;
+	struct evsel *evsel;
+	struct value vals[] = {
+		{ .event = "idq_uops_not_delivered.core",        .val = 300 },
+		{ .event = "cpu_clk_unhalted.thread",            .val = 200 },
+		{ .event = "cpu_clk_unhalted.one_thread_active", .val = 400 },
+		{ .event = "cpu_clk_unhalted.ref_xclk",          .val = 600 },
+		{ 0 },
+	};
+	struct runtime_stat st;
+	int err;
+
+	evlist = evlist__new();
+	if (!evlist)
+		return -1;
+
+	err = metricgroup__parse_groups_test(evlist, &map,
+					     "Frontend_Bound_SMT",
+					     false, false,
+					     &metric_events);
+
+	TEST_ASSERT_VAL("failed to parse metrics", err == 0);
+
+	runtime_stat__init(&st);
+	load_runtime_stat(&st, evlist, vals);
+
+	evsel = evlist__first(evlist);
+	ratio = compute_single(&metric_events, evsel, &st);
+
+	TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio", ratio == 0.45);
+
+	runtime_stat__exit(&st);
+	evlist__delete(evlist);
+	return 0;
+}
+
 int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
 {
 	TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
+	TEST_ASSERT_VAL("frontend failed", test_frontend() == 0);
 	return 0;
 }
-- 
2.25.4