Commit dcfe584b authored by Yu Zhe's avatar Yu Zhe Committed by Alex Deucher
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drm/amdkfd: use time_is_before_jiffies(a + b) to replace "jiffies - a > b" 



time_is_before_jiffies deals with timer wrapping correctly.

Signed-off-by: default avatarYu Zhe <yuzhe@nfschina.com>
Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1ff186ff

drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c

+2 −2
Original line number Diff line number Diff line
@@ -146,7 +146,7 @@ static void interrupt_wq(struct work_struct *work) 
	struct kfd_dev *dev = container_of(work, struct kfd_dev,

						interrupt_work);

	uint32_t ih_ring_entry[KFD_MAX_RING_ENTRY_SIZE];

	long start_jiffies = jiffies;

	unsigned long start_jiffies = jiffies;



	if (dev->device_info.ih_ring_entry_size > sizeof(ih_ring_entry)) {

		dev_err_once(dev->adev->dev, "Ring entry too small\n");
@@ -156,7 +156,7 @@ static void interrupt_wq(struct work_struct *work) 
	while (dequeue_ih_ring_entry(dev, ih_ring_entry)) {

		dev->device_info.event_interrupt_class->interrupt_wq(dev,

								ih_ring_entry);

		if (jiffies - start_jiffies > HZ) {

		if (time_is_before_jiffies(start_jiffies + HZ)) {

			/* If we spent more than a second processing signals,

			 * reschedule the worker to avoid soft-lockup warnings

			 */