[PATCH 20/24] selftests: membarrier: return Kselftest Skip code for skipped tests

[Shuah Khan (Samsung OSG)]

When membarrier test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as a
fail by the Kselftest framework. This leads to false negative result
even when the test could not be run.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Change it to use ksft_exit_skip() when the test is skipped.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@xxxxxxxxxx>
---
 tools/testing/selftests/membarrier/membarrier_test.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c
index 22bffd55a523..6793f8ecc8e7 100644
--- a/tools/testing/selftests/membarrier/membarrier_test.c
+++ b/tools/testing/selftests/membarrier/membarrier_test.c
@@ -293,10 +293,9 @@ static int test_membarrier_query(void)
 		}
 		ksft_exit_fail_msg("sys_membarrier() failed\n");
 	}
-	if (!(ret & MEMBARRIER_CMD_GLOBAL)) {
-		ksft_test_result_fail("sys_membarrier() CMD_GLOBAL query failed\n");
-		ksft_exit_fail_msg("sys_membarrier is not supported.\n");
-	}
+	if (!(ret & MEMBARRIER_CMD_GLOBAL))
+		ksft_exit_skip(
+			"sys_membarrier unsupported: CMD_GLOBAL not found.\n");
 
 	ksft_test_result_pass("sys_membarrier available\n");
 	return 0;
-- 
2.14.1