[tip: locking/futex] selftests/futex: Migrate futex_requeue to harness

[tip-bot2 for Wake Liu]

The following commit has been merged into the locking/futex branch of tip:

Commit-ID:     d0f7df9bb778bb68a3c91c58ea8190188b46f715
Gitweb:        https://git.kernel.org/tip/d0f7df9bb778bb68a3c91c58ea8190188b46f715
Author:        Wake Liu <wakel@xxxxxxxxxx>
AuthorDate:    Mon, 01 Jun 2026 06:51:20 
Committer:     Thomas Gleixner <tglx@xxxxxxxxxx>
CommitterDate: Sun, 05 Jul 2026 21:49:17 +02:00

selftests/futex: Migrate futex_requeue to harness

Migrate futex_requeue test to the kselftest harness framework, removing
mixed legacy ksft_* API usages and ensuring proper thread joining.

[ tglx: Fixup coding style ]

Signed-off-by: Wake Liu <wakel@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
Link: https://patch.msgid.link/20260601065126.3623867-2-wakel@xxxxxxxxxx
---
 tools/testing/selftests/futex/functional/futex_requeue.c | 34 ++++---
 1 file changed, 24 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/futex/functional/futex_requeue.c b/tools/testing/selftests/futex/functional/futex_requeue.c
index dcf0d5f..f4b8dc1 100644
--- a/tools/testing/selftests/futex/functional/futex_requeue.c
+++ b/tools/testing/selftests/futex/functional/futex_requeue.c
@@ -5,8 +5,9 @@
  * futex cmp requeue test by André Almeida <andrealmeid@xxxxxxxxxxxxx>
  */
 
-#include <pthread.h>
 #include <limits.h>
+#include <pthread.h>
+#include <string.h>
 
 #include "futextest.h"
 #include "kselftest_harness.h"
@@ -18,13 +19,18 @@ volatile futex_t *f1;
 
 void *waiterfn(void *arg)
 {
+	struct __test_metadata *_metadata = (struct __test_metadata *)arg;
 	struct timespec to;
+	int res;
 
 	to.tv_sec = 0;
 	to.tv_nsec = timeout_ns;
 
-	if (futex_wait(f1, *f1, &to, 0))
-		printf("waiter failed errno %d\n", errno);
+	res = futex_wait(f1, *f1, &to, 0);
+	if (res) {
+		EXPECT_EQ(res, 0)
+			TH_LOG("waiter failed errno %d: %s", errno, strerror(errno));
+	}
 
 	return NULL;
 }
@@ -40,12 +46,15 @@ TEST(requeue_single)
 	/*
 	 * Requeue a waiter from f1 to f2, and wake f2.
 	 */
-	ASSERT_EQ(0, pthread_create(&waiter[0], NULL, waiterfn, NULL));
+	ASSERT_EQ(pthread_create(&waiter[0], NULL, waiterfn, _metadata), 0)
+		TH_LOG("pthread_create failed");
 
 	usleep(WAKE_WAIT_US);
 
-	EXPECT_EQ(1, futex_cmp_requeue(f1, 0, &f2, 0, 1, 0));
-	EXPECT_EQ(1, futex_wake(&f2, 1, 0));
+	EXPECT_EQ(futex_cmp_requeue(f1, 0, &f2, 0, 1, 0), 1);
+	EXPECT_EQ(futex_wake(&f2, 1, 0), 1);
+
+	pthread_join(waiter[0], NULL);
 }
 
 TEST(requeue_multiple)
@@ -61,13 +70,18 @@ TEST(requeue_multiple)
 	 * Create 10 waiters at f1. At futex_requeue, wake 3 and requeue 7.
 	 * At futex_wake, wake INT_MAX (should be exactly 7).
 	 */
-	for (i = 0; i < 10; i++)
-		ASSERT_EQ(0, pthread_create(&waiter[i], NULL, waiterfn, NULL));
+	for (i = 0; i < 10; i++) {
+		ASSERT_EQ(pthread_create(&waiter[i], NULL, waiterfn, _metadata), 0)
+			TH_LOG("pthread_create failed for waiter %d", i);
+	}
 
 	usleep(WAKE_WAIT_US);
 
-	EXPECT_EQ(10, futex_cmp_requeue(f1, 0, &f2, 3, 7, 0));
-	EXPECT_EQ(7, futex_wake(&f2, INT_MAX, 0));
+	EXPECT_EQ(futex_cmp_requeue(f1, 0, &f2, 3, 7, 0), 10);
+	EXPECT_EQ(futex_wake(&f2, INT_MAX, 0), 7);
+
+	for (i = 0; i < 10; i++)
+		pthread_join(waiter[i], NULL);
 }
 
 TEST_HARNESS_MAIN