Commit 72a651c1 authored by Elizabeth Figura's avatar Elizabeth Figura Committed by Greg Kroah-Hartman
Browse files

selftests: ntsync: Add some tests for wakeup signaling with WINESYNC_IOC_WAIT_ALL. 



Test contended "wait-for-all" waits, to make sure that scheduling and wakeup
logic works correctly, and that the wait only exits once objects are all
simultaneously signaled.

Signed-off-by: default avatarElizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-22-zfigura@codeweavers.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f2327985

tools/testing/selftests/drivers/ntsync/ntsync.c

+91 −0
Original line number Diff line number Diff line
@@ -675,4 +675,95 @@ TEST(wake_any) 
	close(fd);

}



TEST(wake_all)

{

	struct ntsync_mutex_args mutex_args = {0};

	struct ntsync_wait_args wait_args = {0};

	struct ntsync_sem_args sem_args = {0};

	struct wait_args thread_args;

	int objs[2], fd, ret;

	__u32 count, index;

	pthread_t thread;



	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);

	ASSERT_LE(0, fd);



	sem_args.count = 0;

	sem_args.max = 3;

	objs[0] = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);

	EXPECT_LE(0, objs[0]);



	mutex_args.owner = 123;

	mutex_args.count = 1;

	objs[1] = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args);

	EXPECT_LE(0, objs[1]);



	wait_args.timeout = get_abs_timeout(1000);

	wait_args.objs = (uintptr_t)objs;

	wait_args.count = 2;

	wait_args.owner = 456;

	thread_args.fd = fd;

	thread_args.args = &wait_args;

	thread_args.request = NTSYNC_IOC_WAIT_ALL;

	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(ETIMEDOUT, ret);



	count = 1;

	ret = release_sem(objs[0], &count);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, count);



	ret = pthread_tryjoin_np(thread, NULL);

	EXPECT_EQ(EBUSY, ret);



	check_sem_state(objs[0], 1, 3);



	ret = wait_any(fd, 1, &objs[0], 123, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, index);



	ret = unlock_mutex(objs[1], 123, &count);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(1, count);



	ret = pthread_tryjoin_np(thread, NULL);

	EXPECT_EQ(EBUSY, ret);



	check_mutex_state(objs[1], 0, 0);



	count = 2;

	ret = release_sem(objs[0], &count);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, count);

	check_sem_state(objs[0], 1, 3);

	check_mutex_state(objs[1], 1, 456);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, thread_args.ret);



	/* delete an object while it's being waited on */



	wait_args.timeout = get_abs_timeout(200);

	wait_args.owner = 123;

	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(ETIMEDOUT, ret);



	close(objs[0]);

	close(objs[1]);



	ret = wait_for_thread(thread, 200);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(-1, thread_args.ret);

	EXPECT_EQ(ETIMEDOUT, thread_args.err);



	close(fd);

}



TEST_HARNESS_MAIN