From 4562b5c5396efd8187f14f04a9488545ee428f0b Mon Sep 17 00:00:00 2001
From: Yu Zhe <yuzhe@nfschina.com>
Date: Thu, 28 Jul 2022 11:30:26 +0800
Subject: [PATCH] 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: Yu Zhe <yuzhe@nfschina.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
index a9466d1543950..34772fe742960 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
@@ -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
*/
--
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