selftests/resctrl: Add test groups and name L3 CAT test L3_CAT

To select test to run -t parameter can be used. However, -t cat
currently maps to L3 CAT test which will be confusing after more CAT
related tests will be added.

Allow selecting tests as groups and call L3 CAT test "L3_CAT", "CAT"
group will enable all CAT related tests.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/resctrl/cat_test.c

@@ -295,7 +295,8 @@ static int cat_run_test(const struct resctrl_test *test, const struct user_param
 }
 
 struct resctrl_test l3_cat_test = {
-	.name = "CAT",
+	.name = "L3_CAT",
+	.group = "CAT",
 	.resource = "L3",
 	.feature_check = test_resource_feature_check,
 	.run_test = cat_run_test,

tools/testing/selftests/resctrl/resctrl.h

@@ -65,6 +65,8 @@ struct user_params {
 /*
  * resctrl_test:	resctrl test definition
  * @name:		Test name
+ * @group:		Test group - a common name for tests that share some characteristic
+ *			(e.g., L3 CAT test belongs to the CAT group). Can be NULL
  * @resource:		Resource to test (e.g., MB, L3, L2, etc.)
  * @vendor_specific:	Bitmask for vendor-specific tests (can be 0 for universal tests)
  * @disabled:		Test is disabled
@@ -73,6 +75,7 @@ struct user_params {
  */
 struct resctrl_test {
 	const char	*name;
+	const char	*group;
 	const char	*resource;
 	unsigned int	vendor_specific;
 	bool		disabled;

tools/testing/selftests/resctrl/resctrl_tests.c

@@ -65,11 +65,15 @@ static void cmd_help(void)
 	printf("usage: resctrl_tests [-h] [-t test list] [-n no_of_bits] [-b benchmark_cmd [option]...]\n");
 	printf("\t-b benchmark_cmd [option]...: run specified benchmark for MBM, MBA and CMT\n");
 	printf("\t   default benchmark is builtin fill_buf\n");
-	printf("\t-t test list: run tests specified in the test list, ");
+	printf("\t-t test list: run tests/groups specified by the list, ");
 	printf("e.g. -t mbm,mba,cmt,cat\n");
-	printf("\t\tSupported tests:\n");
-	for (i = 0; i < ARRAY_SIZE(resctrl_tests); i++)
-		printf("\t\t\t%s\n", resctrl_tests[i]->name);
+	printf("\t\tSupported tests (group):\n");
+	for (i = 0; i < ARRAY_SIZE(resctrl_tests); i++) {
+		if (resctrl_tests[i]->group)
+			printf("\t\t\t%s (%s)\n", resctrl_tests[i]->name, resctrl_tests[i]->group);
+		else
+			printf("\t\t\t%s\n", resctrl_tests[i]->name);
+	}
 	printf("\t-n no_of_bits: run cache tests using specified no of bits in cache bit mask\n");
 	printf("\t-p cpu_no: specify CPU number to run the test. 1 is default\n");
 	printf("\t-h: help\n");
@@ -199,7 +203,9 @@ int main(int argc, char **argv)
 				bool found = false;
 
 				for (i = 0; i < ARRAY_SIZE(resctrl_tests); i++) {
-					if (!strcasecmp(token, resctrl_tests[i]->name)) {
+					if (!strcasecmp(token, resctrl_tests[i]->name) ||
+					    (resctrl_tests[i]->group &&
+					     !strcasecmp(token, resctrl_tests[i]->group))) {
 						if (resctrl_tests[i]->disabled)
 							tests++;
 						resctrl_tests[i]->disabled = false;