This is a note to let you know that I've just added the patch titled
perf tests: Add some pmu core functionality tests
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-tests-add-some-pmu-core-functionality-tests.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 527f8bef2c7f975a7c00f843fcb76a7016c8b17f
Author: Ian Rogers <irogers@xxxxxxxxxx>
Date: Tue May 14 23:01:14 2024 -0700
perf tests: Add some pmu core functionality tests
[ Upstream commit 678be1ca30cc939e0180c85b4cc9150b3d5ef0c8 ]
Test behavior of PMU names and comparisons wrt suffixes using Intel
uncore_cha, marvell mrvl_ddr_pmu and S390's cpum_cf as examples.
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Ravi Bangoria <ravi.bangoria@xxxxxxx>
Cc: James Clark <james.clark@xxxxxxx>
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Cc: Bharat Bhushan <bbhushan2@xxxxxxxxxxx>
Cc: Bhaskara Budiredla <bbudiredla@xxxxxxxxxxx>
Cc: Tuan Phan <tuanphan@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240515060114.3268149-3-irogers@xxxxxxxxxx
Stable-dep-of: 3e0bf9fde298 ("perf pmu: Restore full PMU name wildcard support")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c
index 06cc0e46cb289..cc88b5920c3e2 100644
--- a/tools/perf/tests/pmu.c
+++ b/tools/perf/tests/pmu.c
@@ -3,6 +3,7 @@
#include "evsel.h"
#include "parse-events.h"
#include "pmu.h"
+#include "pmus.h"
#include "tests.h"
#include "debug.h"
#include "fncache.h"
@@ -340,10 +341,108 @@ static int test__pmu_event_names(struct test_suite *test __maybe_unused,
return ret;
}
+static const char * const uncore_chas[] = {
+ "uncore_cha_0",
+ "uncore_cha_1",
+ "uncore_cha_2",
+ "uncore_cha_3",
+ "uncore_cha_4",
+ "uncore_cha_5",
+ "uncore_cha_6",
+ "uncore_cha_7",
+ "uncore_cha_8",
+ "uncore_cha_9",
+ "uncore_cha_10",
+ "uncore_cha_11",
+ "uncore_cha_12",
+ "uncore_cha_13",
+ "uncore_cha_14",
+ "uncore_cha_15",
+ "uncore_cha_16",
+ "uncore_cha_17",
+ "uncore_cha_18",
+ "uncore_cha_19",
+ "uncore_cha_20",
+ "uncore_cha_21",
+ "uncore_cha_22",
+ "uncore_cha_23",
+ "uncore_cha_24",
+ "uncore_cha_25",
+ "uncore_cha_26",
+ "uncore_cha_27",
+ "uncore_cha_28",
+ "uncore_cha_29",
+ "uncore_cha_30",
+ "uncore_cha_31",
+};
+
+static const char * const mrvl_ddrs[] = {
+ "mrvl_ddr_pmu_87e1b0000000",
+ "mrvl_ddr_pmu_87e1b1000000",
+ "mrvl_ddr_pmu_87e1b2000000",
+ "mrvl_ddr_pmu_87e1b3000000",
+ "mrvl_ddr_pmu_87e1b4000000",
+ "mrvl_ddr_pmu_87e1b5000000",
+ "mrvl_ddr_pmu_87e1b6000000",
+ "mrvl_ddr_pmu_87e1b7000000",
+ "mrvl_ddr_pmu_87e1b8000000",
+ "mrvl_ddr_pmu_87e1b9000000",
+ "mrvl_ddr_pmu_87e1ba000000",
+ "mrvl_ddr_pmu_87e1bb000000",
+ "mrvl_ddr_pmu_87e1bc000000",
+ "mrvl_ddr_pmu_87e1bd000000",
+ "mrvl_ddr_pmu_87e1be000000",
+ "mrvl_ddr_pmu_87e1bf000000",
+};
+
+static int test__name_len(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+{
+ TEST_ASSERT_VAL("cpu", pmu_name_len_no_suffix("cpu") == strlen("cpu"));
+ TEST_ASSERT_VAL("i915", pmu_name_len_no_suffix("i915") == strlen("i915"));
+ TEST_ASSERT_VAL("cpum_cf", pmu_name_len_no_suffix("cpum_cf") == strlen("cpum_cf"));
+ for (size_t i = 0; i < ARRAY_SIZE(uncore_chas); i++) {
+ TEST_ASSERT_VAL("Strips uncore_cha suffix",
+ pmu_name_len_no_suffix(uncore_chas[i]) ==
+ strlen("uncore_cha"));
+ }
+ for (size_t i = 0; i < ARRAY_SIZE(mrvl_ddrs); i++) {
+ TEST_ASSERT_VAL("Strips mrvl_ddr_pmu suffix",
+ pmu_name_len_no_suffix(mrvl_ddrs[i]) ==
+ strlen("mrvl_ddr_pmu"));
+ }
+ return TEST_OK;
+}
+
+static int test__name_cmp(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+{
+ TEST_ASSERT_EQUAL("cpu", pmu_name_cmp("cpu", "cpu"), 0);
+ TEST_ASSERT_EQUAL("i915", pmu_name_cmp("i915", "i915"), 0);
+ TEST_ASSERT_EQUAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_cf"), 0);
+ TEST_ASSERT_VAL("i915", pmu_name_cmp("cpu", "i915") < 0);
+ TEST_ASSERT_VAL("i915", pmu_name_cmp("i915", "cpu") > 0);
+ TEST_ASSERT_VAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_ce") > 0);
+ TEST_ASSERT_VAL("cpum_cf", pmu_name_cmp("cpum_cf", "cpum_d0") < 0);
+ for (size_t i = 1; i < ARRAY_SIZE(uncore_chas); i++) {
+ TEST_ASSERT_VAL("uncore_cha suffixes ordered lt",
+ pmu_name_cmp(uncore_chas[i-1], uncore_chas[i]) < 0);
+ TEST_ASSERT_VAL("uncore_cha suffixes ordered gt",
+ pmu_name_cmp(uncore_chas[i], uncore_chas[i-1]) > 0);
+ }
+ for (size_t i = 1; i < ARRAY_SIZE(mrvl_ddrs); i++) {
+ TEST_ASSERT_VAL("mrvl_ddr_pmu suffixes ordered lt",
+ pmu_name_cmp(mrvl_ddrs[i-1], mrvl_ddrs[i]) < 0);
+ TEST_ASSERT_VAL("mrvl_ddr_pmu suffixes ordered gt",
+ pmu_name_cmp(mrvl_ddrs[i], mrvl_ddrs[i-1]) > 0);
+ }
+ return TEST_OK;
+}
+
static struct test_case tests__pmu[] = {
TEST_CASE("Parsing with PMU format directory", pmu_format),
TEST_CASE("Parsing with PMU event", pmu_events),
TEST_CASE("PMU event names", pmu_event_names),
+ TEST_CASE("PMU name combining", name_len),
+ TEST_CASE("PMU name comparison", name_cmp),
{ .name = NULL, }
};
