perf test: Add skip reason to test case.

This doesn't exist in kunit, but will ease the transition from perf
tests.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Daniel Latypov <dlatypov@google.com>
Cc: David Gow <davidgow@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20211104064208.3156807-9-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/builtin-test.c

@@ -142,6 +142,9 @@ static const char *skip_reason(const struct test_suite *t, int subtest)
 	if (t->subtest.skip_reason)
 		return t->subtest.skip_reason(subtest);
 
+	if (t->test_cases && subtest >= 0)
+		return t->test_cases[subtest].skip_reason;
+
 	return NULL;
 }
 

tools/perf/tests/tests.h

@@ -34,6 +34,7 @@ typedef int (*test_fnptr)(struct test_suite *, int);
 struct test_case {
 	const char *name;
 	const char *desc;
+	const char *skip_reason;
 	test_fnptr run_case;
 };
 
@@ -61,7 +62,15 @@ struct test_suite {
 		.run_case = test__##_name,		\
 	}
 
-#define DEFINE_SUITE(description, _name)			\
+#define TEST_CASE_REASON(description, _name, _reason)	\
+	{						\
+		.name = #_name,				\
+		.desc = description,			\
+		.run_case = test__##_name,		\
+		.skip_reason = _reason,			\
+	}
+
+#define DEFINE_SUITE(description, _name)		\
 	struct test_case tests__##_name[] = {           \
 		TEST_CASE(description, _name),		\
 		{	.name = NULL, }			\