Commit 4057e6ce authored by James Zhu's avatar James Zhu Committed by Alex Deucher
Browse files

drm/amdkfd: add event_age tracking when receiving interrupt 



Add event_age tracking when receiving interrupt.

Signed-off-by: default avatarJames Zhu <James.Zhu@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6f582513

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

+6 −0
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/amd/amdkfd/kfd_events.h

+1 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ struct signal_page; 


struct kfd_event {

	u32 event_id;

	u64 event_age;



	bool signaled;

	bool auto_reset;