[PATCH v2] selftests: x86: conform test to TAP format output

[Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>]

Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
---
Changes since v1:
- No changes, sending it again as got no response on v1 even after weeks
---
 tools/testing/selftests/x86/vdso_restorer.c | 29 +++++++++------------
 1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/tools/testing/selftests/x86/vdso_restorer.c b/tools/testing/selftests/x86/vdso_restorer.c
index fe99f24341554..f621167424a9c 100644
--- a/tools/testing/selftests/x86/vdso_restorer.c
+++ b/tools/testing/selftests/x86/vdso_restorer.c
@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <syscall.h>
 #include <sys/syscall.h>
+#include "../kselftest.h"
 
 /* Open-code this -- the headers are too messy to easily use them. */
 struct real_sigaction {
@@ -44,17 +45,19 @@ static void handler_without_siginfo(int sig)
 
 int main()
 {
-	int nerrs = 0;
 	struct real_sigaction sa;
 
+	ksft_print_header();
+	ksft_set_plan(2);
+
 	void *vdso = dlopen("linux-vdso.so.1",
 			    RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
 	if (!vdso)
 		vdso = dlopen("linux-gate.so.1",
 			      RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
 	if (!vdso) {
-		printf("[SKIP]\tFailed to find vDSO.  Tests are not expected to work.\n");
-		return 0;
+		ksft_print_msg("[SKIP]\tFailed to find vDSO. Tests are not expected to work.\n");
+		return KSFT_SKIP;
 	}
 
 	memset(&sa, 0, sizeof(sa));
@@ -62,21 +65,16 @@ int main()
 	sa.flags = SA_SIGINFO;
 	sa.restorer = NULL;	/* request kernel-provided restorer */
 
-	printf("[RUN]\tRaise a signal, SA_SIGINFO, sa.restorer == NULL\n");
+	ksft_print_msg("Raise a signal, SA_SIGINFO, sa.restorer == NULL\n");
 
 	if (syscall(SYS_rt_sigaction, SIGUSR1, &sa, NULL, 8) != 0)
 		err(1, "raw rt_sigaction syscall");
 
 	raise(SIGUSR1);
 
-	if (handler_called) {
-		printf("[OK]\tSA_SIGINFO handler returned successfully\n");
-	} else {
-		printf("[FAIL]\tSA_SIGINFO handler was not called\n");
-		nerrs++;
-	}
+	ksft_test_result(handler_called, "SA_SIGINFO handler returned\n");
 
-	printf("[RUN]\tRaise a signal, !SA_SIGINFO, sa.restorer == NULL\n");
+	ksft_print_msg("Raise a signal, !SA_SIGINFO, sa.restorer == NULL\n");
 
 	sa.flags = 0;
 	sa.handler = handler_without_siginfo;
@@ -86,10 +84,7 @@ int main()
 
 	raise(SIGUSR1);
 
-	if (handler_called) {
-		printf("[OK]\t!SA_SIGINFO handler returned successfully\n");
-	} else {
-		printf("[FAIL]\t!SA_SIGINFO handler was not called\n");
-		nerrs++;
-	}
+	ksft_test_result(handler_called, "SA_SIGINFO handler returned\n");
+
+	ksft_finished();
 }
-- 
2.39.2