Commit dd914e0d authored by Elizabeth Figura's avatar Elizabeth Figura Committed by Greg Kroah-Hartman
Browse files

selftests: ntsync: Add tests for alertable waits. 



Test the "alert" functionality of NTSYNC_IOC_WAIT_ALL and NTSYNC_IOC_WAIT_ANY,
when a wait is woken with an alert and when it is woken by an object.

Signed-off-by: default avatarElizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-26-zfigura@codeweavers.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a2e5a8ce

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

+164 −3
Original line number Diff line number Diff line
@@ -95,7 +95,7 @@ static int read_event_state(int event, __u32 *signaled, __u32 *manual) 
	})



static int wait_objs(int fd, unsigned long request, __u32 count,

		     const int *objs, __u32 owner, __u32 *index)

		     const int *objs, __u32 owner, int alert, __u32 *index)

{

	struct ntsync_wait_args args = {0};

	struct timespec timeout;
@@ -108,6 +108,7 @@ static int wait_objs(int fd, unsigned long request, __u32 count, 
	args.objs = (uintptr_t)objs;

	args.owner = owner;

	args.index = 0xdeadbeef;

	args.alert = alert;

	ret = ioctl(fd, request, &args);

	*index = args.index;

	return ret;
@@ -115,12 +116,26 @@ static int wait_objs(int fd, unsigned long request, __u32 count, 


static int wait_any(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)

{

	return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, index);

	return wait_objs(fd, NTSYNC_IOC_WAIT_ANY, count, objs, owner, 0, index);

}



static int wait_all(int fd, __u32 count, const int *objs, __u32 owner, __u32 *index)

{

	return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, index);

	return wait_objs(fd, NTSYNC_IOC_WAIT_ALL, count, objs, owner, 0, index);

}



static int wait_any_alert(int fd, __u32 count, const int *objs,

			  __u32 owner, int alert, __u32 *index)

{

	return wait_objs(fd, NTSYNC_IOC_WAIT_ANY,

			 count, objs, owner, alert, index);

}



static int wait_all_alert(int fd, __u32 count, const int *objs,

			  __u32 owner, int alert, __u32 *index)

{

	return wait_objs(fd, NTSYNC_IOC_WAIT_ALL,

			 count, objs, owner, alert, index);

}



TEST(semaphore_state)
@@ -1045,4 +1060,150 @@ TEST(wake_all) 
	close(fd);

}



TEST(alert_any)

{

	struct ntsync_event_args event_args = {0};

	struct ntsync_sem_args sem_args = {0};

	__u32 index, count, signaled;

	int objs[2], event, fd, ret;



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

	ASSERT_LE(0, fd);



	sem_args.count = 0;

	sem_args.max = 2;

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

	EXPECT_LE(0, objs[0]);



	sem_args.count = 1;

	sem_args.max = 2;

	objs[1] = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);

	EXPECT_LE(0, objs[1]);



	event_args.manual = true;

	event_args.signaled = true;

	event = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);

	EXPECT_LE(0, event);



	ret = wait_any_alert(fd, 0, NULL, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, index);



	ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);

	EXPECT_EQ(0, ret);



	ret = wait_any_alert(fd, 0, NULL, 123, event, &index);

	EXPECT_EQ(-1, ret);

	EXPECT_EQ(ETIMEDOUT, errno);



	ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);

	EXPECT_EQ(0, ret);



	ret = wait_any_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(1, index);



	ret = wait_any_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	close(event);



	/* test with an auto-reset event */



	event_args.manual = false;

	event_args.signaled = true;

	event = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);

	EXPECT_LE(0, event);



	count = 1;

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

	EXPECT_EQ(0, ret);



	ret = wait_any_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, index);



	ret = wait_any_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	ret = wait_any_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(-1, ret);

	EXPECT_EQ(ETIMEDOUT, errno);



	close(event);



	close(objs[0]);

	close(objs[1]);



	close(fd);

}



TEST(alert_all)

{

	struct ntsync_event_args event_args = {0};

	struct ntsync_sem_args sem_args = {0};

	__u32 index, count, signaled;

	int objs[2], event, fd, ret;



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

	ASSERT_LE(0, fd);



	sem_args.count = 2;

	sem_args.max = 2;

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

	EXPECT_LE(0, objs[0]);



	sem_args.count = 1;

	sem_args.max = 2;

	objs[1] = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);

	EXPECT_LE(0, objs[1]);



	event_args.manual = true;

	event_args.signaled = true;

	event = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);

	EXPECT_LE(0, event);



	ret = wait_all_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, index);



	ret = wait_all_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	close(event);



	/* test with an auto-reset event */



	event_args.manual = false;

	event_args.signaled = true;

	event = ioctl(fd, NTSYNC_IOC_CREATE_EVENT, &event_args);

	EXPECT_LE(0, event);



	count = 2;

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

	EXPECT_EQ(0, ret);



	ret = wait_all_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, index);



	ret = wait_all_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	ret = wait_all_alert(fd, 2, objs, 123, event, &index);

	EXPECT_EQ(-1, ret);

	EXPECT_EQ(ETIMEDOUT, errno);



	close(event);



	close(objs[0]);

	close(objs[1]);



	close(fd);

}



TEST_HARNESS_MAIN