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drm/amdkfd: add event_age tracking when receiving interrupt

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Add event_age tracking when receiving interrupt.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2023-05-17 16:22:47 -04:00 committed by Alex Deucher
parent 6f582513ad
commit 4057e6ce33
2 changed files with 7 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdkfd/kfd_events.c
View File

@ -431,6 +431,7 @@ int kfd_event_create(struct file *devkfd, struct kfd_process *p,
if (!ret) {
*event_id = ev->event_id;
*event_trigger_data = ev->event_id;
ev->event_age = 1;
} else {
kfree(ev);
}
@ -629,6 +630,11 @@ static void set_event(struct kfd_event *ev)
* updating the wait queues in kfd_wait_on_events.
*/
ev->signaled = !ev->auto_reset || !waitqueue_active(&ev->wq);
if (!(++ev->event_age)) {
/* Never wrap back to reserved/default event age 0/1 */
ev->event_age = 2;
WARN_ONCE(1, "event_age wrap back!");
}
list_for_each_entry(waiter, &ev->wq.head, wait.entry)
WRITE_ONCE(waiter->activated, true);

1
drivers/gpu/drm/amd/amdkfd/kfd_events.h
View File

@ -53,6 +53,7 @@ struct signal_page;
struct kfd_event {
u32 event_id;
u64 event_age;
bool signaled;
bool auto_reset;