perf test: Test more sysfs events

Parse events for all PMUs, and not just cpu, in test "Parsing of all
PMU events from sysfs".
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-11-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/parse-events.c

@@ -7,6 +7,7 @@
 #include "debug.h"
 #include "pmu.h"
 #include "pmu-hybrid.h"
+#include "pmus.h"
 #include <dirent.h>
 #include <errno.h>
 #include "fncache.h"
@@ -558,7 +559,8 @@ static int test__checkevent_pmu_events(struct evlist *evlist)
 	struct evsel *evsel = evlist__first(evlist);
 
 	TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries);
-	TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type);
+	TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type ||
+				      strcmp(evsel->pmu_name, "cpu"));
 	TEST_ASSERT_VAL("wrong exclude_user",
 			!evsel->core.attr.exclude_user);
 	TEST_ASSERT_VAL("wrong exclude_kernel",
@@ -590,7 +592,8 @@ static int test__checkevent_pmu_events_mix(struct evlist *evlist)
 	/* cpu/pmu-event/u*/
 	evsel = evsel__next(evsel);
 	TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries);
-	TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type);
+	TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type ||
+				      strcmp(evsel->pmu_name, "cpu"));
 	TEST_ASSERT_VAL("wrong exclude_user",
 			!evsel->core.attr.exclude_user);
 	TEST_ASSERT_VAL("wrong exclude_kernel",
@@ -2225,31 +2228,35 @@ static int test_pmu(void)
 
 static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
 {
+	struct perf_pmu *pmu;
+	int ret = TEST_OK;
+
+	if (list_empty(&pmus))
+		perf_pmu__scan(NULL);
+
+	perf_pmus__for_each_pmu(pmu) {
 		struct stat st;
 		char path[PATH_MAX];
 		struct dirent *ent;
 		DIR *dir;
-	int ret;
+		int err;
 
-	if (!test_pmu())
-		return TEST_SKIP;
-
-	snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/events/",
-		 sysfs__mountpoint());
+		snprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/events/",
+			sysfs__mountpoint(), pmu->name);
 
-	ret = stat(path, &st);
-	if (ret) {
-		pr_debug("omitting PMU cpu events tests: %s\n", path);
-		return TEST_OK;
+		err = stat(path, &st);
+		if (err) {
+			pr_debug("skipping PMU %s events tests: %s\n", pmu->name, path);
+			continue;
 		}
 
 		dir = opendir(path);
 		if (!dir) {
 			pr_debug("can't open pmu event dir: %s\n", path);
-		return TEST_FAIL;
+			ret = combine_test_results(ret, TEST_SKIP);
+			continue;
 		}
 
-	ret = TEST_OK;
 		while ((ent = readdir(dir))) {
 			struct evlist_test e = { .name = NULL, };
 			char name[2 * NAME_MAX + 1 + 12 + 3];
@@ -2259,7 +2266,7 @@ static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest
 			if (strchr(ent->d_name, '.'))
 				continue;
 
-		snprintf(name, sizeof(name), "cpu/event=%s/u", ent->d_name);
+			snprintf(name, sizeof(name), "%s/event=%s/u", pmu->name, ent->d_name);
 
 			e.name  = name;
 			e.check = test__checkevent_pmu_events;
@@ -2269,6 +2276,10 @@ static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest
 				pr_debug("Test PMU event failed for '%s'", name);
 				ret = combine_test_results(ret, test_ret);
 			}
+
+			if (!is_pmu_core(pmu->name))
+				continue;
+
 			/*
 			 * Names containing '-' are recognized as prefixes and suffixes
 			 * due to '-' being a legacy PMU separator. This fails when the
@@ -2282,7 +2293,8 @@ static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest
 			if (strchr(ent->d_name, '-'))
 				continue;
 
-		snprintf(name, sizeof(name), "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
+			snprintf(name, sizeof(name), "%s:u,%s/event=%s/u",
+				 ent->d_name, pmu->name, ent->d_name);
 			e.name  = name;
 			e.check = test__checkevent_pmu_events_mix;
 			test_ret = test_event(&e);
@@ -2293,6 +2305,7 @@ static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest
 		}
 
 		closedir(dir);
+	}
 	return ret;
 }