Commit 8e2ef85c authored by James Clark's avatar James Clark Committed by Arnaldo Carvalho de Melo
Browse files

perf tests: Test evsel__set_config_if_unset() and config change tracking 



Test that evsel__set_config_if_unset() behaves as expected. This also
tests the user config change tracking mechanism as it depends on it.

Reviewed-by: default avatarIan Rogers <irogers@google.com>
Signed-off-by: default avatarJames Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 6f87719b

tools/perf/tests/pmu.c

+91 −0
Original line number Diff line number Diff line
@@ -192,12 +192,102 @@ static int test__pmu_format(struct test_suite *test __maybe_unused, int subtest 
	}

	if (attr.config2 != 0x0400000020041d07) {

		pr_err("Unexpected config2 value %llx\n", attr.config2);

	}



	ret = TEST_OK;

err_out:

	parse_events_terms__exit(&terms);

	test_pmu_put(dir, pmu);

	return ret;

}



static int test__pmu_usr_chgs(struct test_suite *test __maybe_unused, int subtest __maybe_unused)

{

	const char *event = "perf-pmu-test/config=15,config1=4,krava02=170,"

			    "krava03=1,krava11=27,krava12=1/";

	struct parse_events_terms terms;

	struct parse_events_error err;

	LIST_HEAD(config_terms);

	struct evlist *evlist;

	struct perf_pmu *pmu;

	struct evsel *evsel;

	int ret = TEST_FAIL;

	char dir[PATH_MAX];

	u64 val;



	pmu = test_pmu_get(dir, sizeof(dir));

	if (!pmu)

		return TEST_FAIL;



	evlist = evlist__new();

	if (evlist == NULL) {

		pr_err("Failed allocation");

		goto err_out;

	}



	parse_events_terms__init(&terms);

	ret = parse_events(evlist, event, &err);

	if (ret) {

		pr_debug("failed to parse event '%s', err %d\n", event, ret);

		parse_events_error__print(&err, event);

		if (parse_events_error__contains(&err, "can't access trace events"))

			ret = TEST_SKIP;

		goto err_out;

	}

	evsel = evlist__first(evlist);



	/*

	 * Set via config=15, krava01 bits 0-1

	 * Set via config1=4, krava11 bit 1

	 * Set values: krava02=170, krava03=1, krava11=27, krava12=1

	 *

	 * Test that already set values aren't overwritten.

	 */

	evsel__set_config_if_unset(evsel, "krava01", 16);

	evsel__get_config_val(evsel, "krava01", &val);

	TEST_ASSERT_EQUAL("krava01 overwritten", (int) val, (15 & 0b11));



	evsel__set_config_if_unset(evsel, "krava11", 45);

	evsel__get_config_val(evsel, "krava11", &val);

	TEST_ASSERT_EQUAL("krava11 overwritten", (int) val, (27 | (4 << 1)));



	evsel__set_config_if_unset(evsel, "krava02", 32);

	evsel__get_config_val(evsel, "krava02", &val);

	TEST_ASSERT_EQUAL("krava02 overwritten", (int) val, 170);



	evsel__set_config_if_unset(evsel, "krava03", 0);

	evsel__get_config_val(evsel, "krava03", &val);

	TEST_ASSERT_EQUAL("krava03 overwritten", (int) val, 1);



	/*

	 * krava13 doesn't have any bits set by either krava13= or config1=

	 * but setting _any_ raw value for config1 implies that krava13

	 * shouldn't be overwritten. So it's value should remain as 0.

	 */

	evsel__set_config_if_unset(evsel, "krava13", 5);

	evsel__get_config_val(evsel, "krava13", &val);

	TEST_ASSERT_EQUAL("krava13 overwritten", (int) val, 0);



	/*

	 * Unset values: krava21, krava22, krava23

	 *

	 * Test that unset values are overwritten.

	 */

	evsel__set_config_if_unset(evsel, "krava21", 13905);

	evsel__get_config_val(evsel, "krava21", &val);

	TEST_ASSERT_EQUAL("krava21 not overwritten", (int) val, 13905);



	evsel__set_config_if_unset(evsel, "krava22", 11);

	evsel__get_config_val(evsel, "krava22", &val);

	TEST_ASSERT_EQUAL("krava22 not overwritten", (int) val, 11);



	evsel__set_config_if_unset(evsel, "krava23", 0);

	evsel__get_config_val(evsel, "krava23", &val);

	TEST_ASSERT_EQUAL("krava23 not overwritten", (int) val, 0);

	ret = TEST_OK;

err_out:

	parse_events_terms__exit(&terms);

	evlist__delete(evlist);

	test_pmu_put(dir, pmu);

	return ret;

}
@@ -539,6 +629,7 @@ static struct test_case tests__pmu[] = { 
	TEST_CASE("PMU name combining", name_len),

	TEST_CASE("PMU name comparison", name_cmp),

	TEST_CASE("PMU cmdline match", pmu_match),

	TEST_CASE("PMU user config changes", pmu_usr_chgs),

	{	.name = NULL, }

};