[PATCH 17/53] selftests/mm: uffd-stress: use kselftest framework

[Mike Rapoport <rppt@kernel.org>]

From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>

Convert uffd-stress test to use kselftest framework for reporting and
tracking successful and failing runs.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
 tools/testing/selftests/mm/uffd-stress.c | 41 +++++++++++-------------
 1 file changed, 19 insertions(+), 22 deletions(-)

diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index 700fbaa18d44..e92a85463eb1 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -286,19 +286,12 @@ static int userfaultfd_stress(uffd_global_test_opts_t *gopts)
 	pthread_attr_setstacksize(&attr, 16*1024*1024);
 
 	while (bounces--) {
-		printf("bounces: %d, mode:", bounces);
-		if (bounces & BOUNCE_RANDOM)
-			printf(" rnd");
-		if (bounces & BOUNCE_RACINGFAULTS)
-			printf(" racing");
-		if (bounces & BOUNCE_VERIFY)
-			printf(" ver");
-		if (bounces & BOUNCE_POLL)
-			printf(" poll");
-		else
-			printf(" read");
-		printf(", ");
-		fflush(stdout);
+		ksft_print_msg("bounces: %d, mode:%s%s%s%s, ",
+			       bounces,
+			       bounces & BOUNCE_RANDOM ? " rnd" : "",
+			       bounces & BOUNCE_RACINGFAULTS ? " racing" : "",
+			       bounces & BOUNCE_VERIFY ? " ver" : "",
+			       bounces & BOUNCE_POLL ? " poll" : " read");
 
 		if (bounces & BOUNCE_POLL)
 			fcntl(gopts->uffd, F_SETFL, gopts->uffd_flags | O_NONBLOCK);
@@ -456,6 +449,9 @@ int main(int argc, char **argv)
 	unsigned long nr_cpus;
 	size_t bytes;
 
+	ksft_print_header();
+	ksft_set_plan(1);
+
 	gopts = (uffd_global_test_opts_t *) malloc(sizeof(uffd_global_test_opts_t));
 
 	if (argc < 4)
@@ -484,10 +480,8 @@ int main(int argc, char **argv)
 	 * for racy extra reservation of hugepages.
 	 */
 	if (gopts->test_type == TEST_HUGETLB &&
-	   get_free_hugepages() < 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1) {
-		printf("skip: Skipping userfaultfd... not enough hugepages\n");
-		return KSFT_SKIP;
-	}
+	   get_free_hugepages() < 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1)
+		ksft_exit_skip("Skipping userfaultfd... not enough hugepages\n");
 
 	gopts->nr_pages_per_cpu = bytes / gopts->page_size / gopts->nr_parallel;
 	if (!gopts->nr_pages_per_cpu) {
@@ -503,9 +497,12 @@ int main(int argc, char **argv)
 	}
 	gopts->nr_pages = gopts->nr_pages_per_cpu * gopts->nr_parallel;
 
-	printf("nr_pages: %lu, nr_pages_per_cpu: %lu\n",
-	       gopts->nr_pages, gopts->nr_pages_per_cpu);
-	return userfaultfd_stress(gopts);
+	ksft_print_msg("nr_pages: %lu, nr_pages_per_cpu: %lu\n",
+		       gopts->nr_pages, gopts->nr_pages_per_cpu);
+
+	ksft_test_result(!userfaultfd_stress(gopts),
+			 "uffd-stress %s\n", argv[1]);
+	ksft_finished();
 }
 
 #else /* __NR_userfaultfd */
@@ -514,8 +511,8 @@ int main(int argc, char **argv)
 
 int main(void)
 {
-	printf("skip: Skipping userfaultfd test (missing __NR_userfaultfd)\n");
-	return KSFT_SKIP;
+	ksft_print_header();
+	ksft_exit_skip("missing __NR_userfaultfd definition\n");
 }
 
 #endif /* __NR_userfaultfd */
-- 
2.53.0