selftests: sync: convert to use TAP13 ksft framework

Convert test to use TAP13 ksft framework. Output after conversion:

TAP version 13
# [RUN]	Testing sync framework
ok 1 [RUN]	test_alloc_timeline
ok 2 [RUN]	test_alloc_fence
ok 3 [RUN]	test_alloc_fence_negative
ok 4 [RUN]	test_fence_one_timeline_wait
ok 5 [RUN]	test_fence_one_timeline_merge
ok 6 [RUN]	test_fence_merge_same_fence
ok 7 [RUN]	test_fence_multi_timeline_wait
ok 8 [RUN]	test_stress_two_threads_shared_timeline
ok 9 [RUN]	test_consumer_stress_multi_producer_single_consumer
ok 10 [RUN]	test_merge_stress_random_merge
Pass 10 Fail 0 Xfail 0 Xpass 0 Skip 0
1..10

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>

tools/testing/selftests/sync/sync_test.c

@@ -32,76 +32,82 @@
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <errno.h>
+#include <string.h>
 
+#include "../kselftest.h"
 #include "synctest.h"
 
 static int run_test(int (*test)(void), char *name)
 {
 	int result;
 	pid_t childpid;
+	int ret;
 
 	fflush(stdout);
 	childpid = fork();
 
 	if (childpid) {
 		waitpid(childpid, &result, 0);
-		if (WIFEXITED(result))
-			return WEXITSTATUS(result);
+		if (WIFEXITED(result)) {
+			ret = WEXITSTATUS(result);
+			if (!ret)
+				ksft_test_result_pass("[RUN]\t%s\n", name);
+			else
+				ksft_test_result_fail("[RUN]\t%s\n", name);
+			return ret;
+		}
 		return 1;
 	}
 
-	printf("[RUN]\tExecuting %s\n", name);
 	exit(test());
 }
 
-static int sync_api_supported(void)
+static void sync_api_supported(void)
 {
 	struct stat sbuf;
 	int ret;
 
 	ret = stat("/sys/kernel/debug/sync/sw_sync", &sbuf);
 	if (!ret)
-		return 0;
+		return;
 
-	if (errno == ENOENT) {
-		printf("SKIP: Sync framework not supported by kernel\n");
-		exit(0);
-	}
-	if (errno == EACCES) {
-		printf("SKIP: Run Sync test as root.\n");
-		exit(0);
-	}
+	if (errno == ENOENT)
+		ksft_exit_skip("Sync framework not supported by kernel\n");
 
-	perror("stat");
-	exit(ret);
+	if (errno == EACCES)
+		ksft_exit_skip("Run Sync test as root.\n");
 
+	ksft_exit_fail_msg("stat failed on /sys/kernel/debug/sync/sw_sync: %s",
+				strerror(errno));
 }
 
 int main(void)
 {
-	int err = 0;
+	int err;
 
-	if (!sync_api_supported())
-		return 0;
+	ksft_print_header();
 
-	printf("[RUN]\tTesting sync framework\n");
+	sync_api_supported();
 
-	err += RUN_TEST(test_alloc_timeline);
-	err += RUN_TEST(test_alloc_fence);
-	err += RUN_TEST(test_alloc_fence_negative);
+	ksft_print_msg("[RUN]\tTesting sync framework\n");
 
-	err += RUN_TEST(test_fence_one_timeline_wait);
-	err += RUN_TEST(test_fence_one_timeline_merge);
-	err += RUN_TEST(test_fence_merge_same_fence);
-	err += RUN_TEST(test_fence_multi_timeline_wait);
-	err += RUN_TEST(test_stress_two_threads_shared_timeline);
-	err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
-	err += RUN_TEST(test_merge_stress_random_merge);
+	RUN_TEST(test_alloc_timeline);
+	RUN_TEST(test_alloc_fence);
+	RUN_TEST(test_alloc_fence_negative);
 
+	RUN_TEST(test_fence_one_timeline_wait);
+	RUN_TEST(test_fence_one_timeline_merge);
+	RUN_TEST(test_fence_merge_same_fence);
+	RUN_TEST(test_fence_multi_timeline_wait);
+	RUN_TEST(test_stress_two_threads_shared_timeline);
+	RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
+	RUN_TEST(test_merge_stress_random_merge);
+
+	err = ksft_get_fail_cnt();
 	if (err)
-		printf("[FAIL]\tsync errors: %d\n", err);
-	else
-		printf("[OK]\tsync\n");
+		ksft_exit_fail_msg("%d out of %d sync tests failed\n",
+					err, ksft_test_num());
 
-	return !!err;
+	/* need this return to keep gcc happy */
+	return ksft_exit_pass();
 }

tools/testing/selftests/sync/synctest.h

@@ -29,10 +29,11 @@
 #define SELFTESTS_SYNCTEST_H
 
 #include <stdio.h>
+#include "../kselftest.h"
 
 #define ASSERT(cond, msg) do { \
 	if (!(cond)) { \
-		printf("[ERROR]\t%s", (msg)); \
+		ksft_print_msg("[ERROR]\t%s", (msg)); \
 		return 1; \
 	} \
 } while (0)