linux-kernel - [PATCH v2 3/4] perf tests: Fix 'Roundtrip evsel->name' on core-only system

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Message-Id: <20210708013701.20347-4-yao.jin@linux.intel.com>
Date:   Thu,  8 Jul 2021 09:37:00 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v2 3/4] perf tests: Fix 'Roundtrip evsel->name' on core-only system

If the atom CPUs are offlined, the 'cpu_atom' is not valid.
Perf will not create two events for one hw event, so the
evsel->idx doesn't need to be divided by 2 before comparing.

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
 tools/perf/tests/evsel-roundtrip-name.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/evsel-roundtrip-name.c b/tools/perf/tests/evsel-roundtrip-name.c
index b74cf80d1f10..26c49dc3e01e 100644
--- a/tools/perf/tests/evsel-roundtrip-name.c
+++ b/tools/perf/tests/evsel-roundtrip-name.c
@@ -5,6 +5,7 @@
 #include "tests.h"
 #include "debug.h"
 #include "pmu.h"
+#include "pmu-hybrid.h"
 #include <errno.h>
 #include <linux/kernel.h>
 
@@ -102,7 +103,7 @@ int test__perf_evsel__roundtrip_name_test(struct test *test __maybe_unused, int
 {
 	int err = 0, ret = 0;
 
-	if (perf_pmu__has_hybrid())
+	if (perf_pmu__has_hybrid() && perf_pmu__hybrid_mounted("cpu_atom"))
 		return perf_evsel__name_array_test(evsel__hw_names, 2);
 
 	err = perf_evsel__name_array_test(evsel__hw_names, 1);
-- 
2.17.1