[PATCH v2] drm/amdkfd: use time_is_before_jiffies(a + b) to replace "jiffies - a > b"
Felix Kuehling
felix.kuehling at amd.com
Thu Jul 28 22:05:50 UTC 2022
Am 2022-07-27 um 23:30 schrieb Yu Zhe:
> time_is_before_jiffies deals with timer wrapping correctly.
>
> Signed-off-by: Yu Zhe <yuzhe at nfschina.com>
Thank you. This patch looks good to me. I'm applying it to
amd-staging-drm-next.
Reviewed-by: Felix Kuehling <Felix.Kuehling at 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 a9466d154395..34772fe74296 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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