[RFC 5/7] selftests: kselftest_harness: print test name for SKIP and XFAIL

[Jakub Kicinski <kuba@kernel.org>]

Jakub points out that for parsers it's rather useful to always
have the test name on the result line. Currently if we SKIP
or XFAIL, we will print:

ok 17 # SKIP SCTP doesn't support IP_BIND_ADDRESS_NO_PORT

     ^
     no test name

Always print the test name.
KTAP format seems to allow or even call for it, per:
https://docs.kernel.org/dev-tools/ktap.html

Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/all/87jzn6lnou.fsf@cloudflare.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 tools/testing/selftests/kselftest.h         | 7 ++++---
 tools/testing/selftests/kselftest_harness.h | 3 ++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index 12ad7f8dfe3a..25e29626566e 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -255,8 +255,9 @@ static inline __printf(1, 2) void ksft_test_result_error(const char *msg, ...)
 	va_end(args);
 }
 
-static inline __printf(2, 3)
-void ksft_test_result_code(int exit_code, const char *msg, ...)
+static inline __printf(3, 4)
+void ksft_test_result_code(int exit_code, const char *test_name,
+			   const char *msg, ...)
 {
 	const char *tap_code = "ok";
 	const char *directive = "";
@@ -287,7 +288,7 @@ void ksft_test_result_code(int exit_code, const char *msg, ...)
 	}
 
 	va_start(args, msg);
-	printf("%s %u%s", tap_code, ksft_test_num(), directive);
+	printf("%s %u %s%s", tap_code, ksft_test_num(), test_name, directive);
 	errno = saved_errno;
 	vprintf(msg, args);
 	va_end(args);
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 79a3fec0cefa..beae50fd5ac3 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -1178,7 +1178,8 @@ void __run_test(struct __fixture_metadata *f,
 		diagnostic = "unknown";
 
 	if (t->exit_code == KSFT_SKIP || t->exit_code == KSFT_XFAIL)
-		ksft_test_result_code(t->exit_code, "%s\n", diagnostic);
+		ksft_test_result_code(t->exit_code, test_name,
+				      "%s\n", diagnostic);
 	else
 		ksft_test_result(__test_passed(t), "%s\n", test_name);
 }
-- 
2.43.0