perf test: Fix event parsing test on Arm

The test looks for a PMU from sysfs with type = PERF_TYPE_RAW when
opening a raw event. Arm doesn't have a real raw PMU, only core PMUs
with unique types other than raw.

Instead of looking for a matching PMU, just test that the event type
was parsed as raw and skip the PMU search on Arm. The raw event type
test should also apply to all platforms so add it outside of the ifdef.

Fixes: aefde50a446b ("perf test: Fix parse-events tests for >1 core PMU")
Acked-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20230705082653.23566-2-james.clark@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

1 files changed, 13 insertions, 1 deletions

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 133218e51ab440..21f79aa31233c9 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -108,10 +108,21 @@ static int test__checkevent_raw(struct evlist *evlist)
 	TEST_ASSERT_VAL("wrong number of entries", 0 != evlist->core.nr_entries);
 
 	perf_evlist__for_each_evsel(&evlist->core, evsel) {
-		struct perf_pmu *pmu = NULL;
+		struct perf_pmu *pmu __maybe_unused = NULL;
 		bool type_matched = false;
 
 		TEST_ASSERT_VAL("wrong config", test_perf_config(evsel, 0x1a));
+		TEST_ASSERT_VAL("event not parsed as raw type",
+				evsel->attr.type == PERF_TYPE_RAW);
+#if defined(__aarch64__)
+		/*
+		 * Arm doesn't have a real raw type PMU in sysfs, so raw events
+		 * would never match any PMU. However, RAW events on Arm will
+		 * always successfully open on the first available core PMU
+		 * so no need to test for a matching type here.
+		 */
+		type_matched = raw_type_match = true;
+#else
 		while ((pmu = perf_pmus__scan(pmu)) != NULL) {
 			if (pmu->type == evsel->attr.type) {
 				TEST_ASSERT_VAL("PMU type expected once", !type_matched);
@@ -120,6 +131,7 @@ static int test__checkevent_raw(struct evlist *evlist)
 					raw_type_match = true;
 			}
 		}
+#endif
 		TEST_ASSERT_VAL("No PMU found for type", type_matched);
 	}
 	TEST_ASSERT_VAL("Raw PMU not matched", raw_type_match);