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",
@@ -2225,74 +2228,84 @@ static int test_pmu(void)
 
 static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
 {
-	struct stat st;
-	char path[PATH_MAX];
-	struct dirent *ent;
-	DIR *dir;
-	int ret;
-
-	if (!test_pmu())
-		return TEST_SKIP;
+	struct perf_pmu *pmu;
+	int ret = TEST_OK;
 
-	snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/events/",
-		 sysfs__mountpoint());
+	if (list_empty(&pmus))
+		perf_pmu__scan(NULL);
 
-	ret = stat(path, &st);
-	if (ret) {
-		pr_debug("omitting PMU cpu events tests: %s\n", path);
-		return TEST_OK;
-	}
+	perf_pmus__for_each_pmu(pmu) {
+		struct stat st;
+		char path[PATH_MAX];
+		struct dirent *ent;
+		DIR *dir;
+		int err;
 
-	dir = opendir(path);
-	if (!dir) {
-		pr_debug("can't open pmu event dir: %s\n", path);
-		return TEST_FAIL;
-	}
+		snprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/events/",
+			sysfs__mountpoint(), pmu->name);
 
-	ret = TEST_OK;
-	while ((ent = readdir(dir))) {
-		struct evlist_test e = { .name = NULL, };
-		char name[2 * NAME_MAX + 1 + 12 + 3];
-		int test_ret;
+		err = stat(path, &st);
+		if (err) {
+			pr_debug("skipping PMU %s events tests: %s\n", pmu->name, path);
+			continue;
+		}
 
-		/* Names containing . are special and cannot be used directly */
-		if (strchr(ent->d_name, '.'))
+		dir = opendir(path);
+		if (!dir) {
+			pr_debug("can't open pmu event dir: %s\n", path);
+			ret = combine_test_results(ret, TEST_SKIP);
 			continue;
+		}
 
-		snprintf(name, sizeof(name), "cpu/event=%s/u", ent->d_name);
+		while ((ent = readdir(dir))) {
+			struct evlist_test e = { .name = NULL, };
+			char name[2 * NAME_MAX + 1 + 12 + 3];
+			int test_ret;
 
-		e.name  = name;
-		e.check = test__checkevent_pmu_events;
+			/* Names containing . are special and cannot be used directly */
+			if (strchr(ent->d_name, '.'))
+				continue;
 
-		test_ret = test_event(&e);
-		if (test_ret != TEST_OK) {
-			pr_debug("Test PMU event failed for '%s'", name);
-			ret = combine_test_results(ret, test_ret);
-		}
-		/*
-		 * Names containing '-' are recognized as prefixes and suffixes
-		 * due to '-' being a legacy PMU separator. This fails when the
-		 * prefix or suffix collides with an existing legacy token. For
-		 * example, branch-brs has a prefix (branch) that collides with
-		 * a PE_NAME_CACHE_TYPE token causing a parse error as a suffix
-		 * isn't expected after this. As event names in the config
-		 * slashes are allowed a '-' in the name we check this works
-		 * above.
-		 */
-		if (strchr(ent->d_name, '-'))
-			continue;
+			snprintf(name, sizeof(name), "%s/event=%s/u", pmu->name, ent->d_name);
 
-		snprintf(name, sizeof(name), "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
-		e.name  = name;
-		e.check = test__checkevent_pmu_events_mix;
-		test_ret = test_event(&e);
-		if (test_ret != TEST_OK) {
-			pr_debug("Test PMU event failed for '%s'", name);
-			ret = combine_test_results(ret, test_ret);
+			e.name  = name;
+			e.check = test__checkevent_pmu_events;
+
+			test_ret = test_event(&e);
+			if (test_ret != TEST_OK) {
+				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
+			 * prefix or suffix collides with an existing legacy token. For
+			 * example, branch-brs has a prefix (branch) that collides with
+			 * a PE_NAME_CACHE_TYPE token causing a parse error as a suffix
+			 * isn't expected after this. As event names in the config
+			 * slashes are allowed a '-' in the name we check this works
+			 * above.
+			 */
+			if (strchr(ent->d_name, '-'))
+				continue;
+
+			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);
+			if (test_ret != TEST_OK) {
+				pr_debug("Test PMU event failed for '%s'", name);
+				ret = combine_test_results(ret, test_ret);
+			}
 		}
-	}
 
-	closedir(dir);
+		closedir(dir);
+	}
 	return ret;
 }