linux-kernel - [PATCH v3 13/46] perf test: Use valid for PMU tests

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Date:   Fri, 28 Apr 2023 22:34:33 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ahmad Yasin <ahmad.yasin@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Samantha Alt <samantha.alt@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Weilin Wang <weilin.wang@...el.com>,
        Edward Baker <edward.baker@...el.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Florian Fischer <florian.fischer@...q.space>,
        Rob Herring <robh@...nel.org>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        John Garry <john.g.garry@...cle.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Leo Yan <leo.yan@...aro.org>,
        Yang Jihong <yangjihong1@...wei.com>,
        James Clark <james.clark@....com>,
        Suzuki Poulouse <suzuki.poulose@....com>,
        Kang Minchul <tegongkang@...il.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ian Rogers <irogers@...gle.com>
Subject: [PATCH v3 13/46] perf test: Use valid for PMU tests

Rather than skip all tests in test__events_pmu if PMU cpu isn't
present, use the per-test valid test. This allows the running of
software PMU tests on hybrid and arm systems.

Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/tests/parse-events.c | 27 +++++++++------------------
 1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 35b35a5c795c..767b296b91e4 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -1430,6 +1430,11 @@ static int test__checkevent_config_cache(struct evlist *evlist)
 	return TEST_OK;
 }
 
+static bool test__pmu_cpu_valid(void)
+{
+	return !!perf_pmu__find("cpu");
+}
+
 static bool test__intel_pt_valid(void)
 {
 	return !!perf_pmu__find("intel_pt");
@@ -1979,21 +1984,25 @@ static const struct evlist_test test__events[] = {
 static const struct evlist_test test__events_pmu[] = {
 	{
 		.name  = "cpu/config=10,config1,config2=3,period=1000/u",
+		.valid = test__pmu_cpu_valid,
 		.check = test__checkevent_pmu,
 		/* 0 */
 	},
 	{
 		.name  = "cpu/config=1,name=krava/u,cpu/config=2/u",
+		.valid = test__pmu_cpu_valid,
 		.check = test__checkevent_pmu_name,
 		/* 1 */
 	},
 	{
 		.name  = "cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/",
+		.valid = test__pmu_cpu_valid,
 		.check = test__checkevent_pmu_partial_time_callgraph,
 		/* 2 */
 	},
 	{
 		.name  = "cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2/ukp",
+		.valid = test__pmu_cpu_valid,
 		.check = test__checkevent_complex_name,
 		/* 3 */
 	},
@@ -2209,21 +2218,6 @@ static int test__terms2(struct test_suite *test __maybe_unused, int subtest __ma
 	return test_terms(test__terms, ARRAY_SIZE(test__terms));
 }
 
-static int test_pmu(void)
-{
-	struct stat st;
-	char path[PATH_MAX];
-	int ret;
-
-	snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/format/",
-		 sysfs__mountpoint());
-
-	ret = stat(path, &st);
-	if (ret)
-		pr_debug("omitting PMU cpu tests\n");
-	return !ret;
-}
-
 static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
 {
 	struct perf_pmu *pmu;
@@ -2307,9 +2301,6 @@ static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest
 
 static int test__pmu_events2(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
 {
-	if (!test_pmu())
-		return TEST_SKIP;
-
 	return test_events(test__events_pmu, ARRAY_SIZE(test__events_pmu));
 }
 
-- 
2.40.1.495.gc816e09b53d-goog