53 int drm_sched_entity_init(struct drm_sched_entity *entity,  in drm_sched_entity_init()  argument
59 	if (!(entity && sched_list && (num_sched_list == 0 || sched_list[0])))  in drm_sched_entity_init()
62 	memset(entity, 0, sizeof(struct drm_sched_entity));  in drm_sched_entity_init()
63 	INIT_LIST_HEAD(&entity->list);  in drm_sched_entity_init()
64 	entity->rq = NULL;  in drm_sched_entity_init()
65 	entity->guilty = guilty;  in drm_sched_entity_init()
66 	entity->num_sched_list = num_sched_list;  in drm_sched_entity_init()
67 	entity->priority = priority;  in drm_sched_entity_init()
68 	entity->sched_list = num_sched_list > 1 ? sched_list : NULL;  in drm_sched_entity_init()
69 	entity->last_scheduled = NULL;  in drm_sched_entity_init()
72 		entity->rq = &sched_list[0]->sched_rq[entity->priority];  in drm_sched_entity_init()
74 	init_completion(&entity->entity_idle);  in drm_sched_entity_init()
76 	spin_lock_init(&entity->rq_lock);  in drm_sched_entity_init()
77 	spsc_queue_init(&entity->job_queue);  in drm_sched_entity_init()
79 	atomic_set(&entity->fence_seq, 0);  in drm_sched_entity_init()
80 	entity->fence_context = dma_fence_context_alloc(2);  in drm_sched_entity_init()
93 void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,  in drm_sched_entity_modify_sched()  argument
99 	entity->sched_list = sched_list;  in drm_sched_entity_modify_sched()
100 	entity->num_sched_list = num_sched_list;  in drm_sched_entity_modify_sched()
111 static bool drm_sched_entity_is_idle(struct drm_sched_entity *entity)  in drm_sched_entity_is_idle()  argument
115 	if (list_empty(&entity->list) ||  in drm_sched_entity_is_idle()
116 	    spsc_queue_count(&entity->job_queue) == 0)  in drm_sched_entity_is_idle()
129 bool drm_sched_entity_is_ready(struct drm_sched_entity *entity)  in drm_sched_entity_is_ready()  argument
131 	if (spsc_queue_peek(&entity->job_queue) == NULL)  in drm_sched_entity_is_ready()
134 	if (READ_ONCE(entity->dependency))  in drm_sched_entity_is_ready()
152 long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout)  in drm_sched_entity_flush()  argument
158 	if (!entity->rq)  in drm_sched_entity_flush()
161 	sched = entity->rq->sched;  in drm_sched_entity_flush()
170 					drm_sched_entity_is_idle(entity),  in drm_sched_entity_flush()
174 				    drm_sched_entity_is_idle(entity));  in drm_sched_entity_flush()
178 	last_user = cmpxchg(&entity->last_user, current->group_leader, NULL);  in drm_sched_entity_flush()
181 		spin_lock(&entity->rq_lock);  in drm_sched_entity_flush()
182 		entity->stopped = true;  in drm_sched_entity_flush()
183 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_flush()
184 		spin_unlock(&entity->rq_lock);  in drm_sched_entity_flush()
218 static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity)  in drm_sched_entity_kill_jobs()  argument
223 	while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) {  in drm_sched_entity_kill_jobs()
234 		if (!entity->last_scheduled) {  in drm_sched_entity_kill_jobs()
239 		r = dma_fence_add_callback(entity->last_scheduled,  in drm_sched_entity_kill_jobs()
258 void drm_sched_entity_fini(struct drm_sched_entity *entity)  in drm_sched_entity_fini()  argument
262 	if (entity->rq) {  in drm_sched_entity_fini()
263 		sched = entity->rq->sched;  in drm_sched_entity_fini()
264 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_fini()
270 	if (spsc_queue_count(&entity->job_queue)) {  in drm_sched_entity_fini()
276 			wait_for_completion(&entity->entity_idle);  in drm_sched_entity_fini()
279 		if (entity->dependency) {  in drm_sched_entity_fini()
280 			dma_fence_remove_callback(entity->dependency,  in drm_sched_entity_fini()
281 						  &entity->cb);  in drm_sched_entity_fini()
282 			dma_fence_put(entity->dependency);  in drm_sched_entity_fini()
283 			entity->dependency = NULL;  in drm_sched_entity_fini()
286 		drm_sched_entity_kill_jobs(entity);  in drm_sched_entity_fini()
289 	dma_fence_put(entity->last_scheduled);  in drm_sched_entity_fini()
290 	entity->last_scheduled = NULL;  in drm_sched_entity_fini()
301 void drm_sched_entity_destroy(struct drm_sched_entity *entity)  in drm_sched_entity_destroy()  argument
303 	drm_sched_entity_flush(entity, MAX_WAIT_SCHED_ENTITY_Q_EMPTY);  in drm_sched_entity_destroy()
304 	drm_sched_entity_fini(entity);  in drm_sched_entity_destroy()
314 	struct drm_sched_entity *entity =  in drm_sched_entity_clear_dep()  local
317 	entity->dependency = NULL;  in drm_sched_entity_clear_dep()
328 	struct drm_sched_entity *entity =  in drm_sched_entity_wakeup()  local
332 	drm_sched_wakeup(entity->rq->sched);  in drm_sched_entity_wakeup()
343 void drm_sched_entity_set_priority(struct drm_sched_entity *entity,  in drm_sched_entity_set_priority()  argument
346 	spin_lock(&entity->rq_lock);  in drm_sched_entity_set_priority()
347 	entity->priority = priority;  in drm_sched_entity_set_priority()
348 	spin_unlock(&entity->rq_lock);  in drm_sched_entity_set_priority()
360 static bool drm_sched_entity_add_dependency_cb(struct drm_sched_entity *entity)  in drm_sched_entity_add_dependency_cb()  argument
362 	struct drm_gpu_scheduler *sched = entity->rq->sched;  in drm_sched_entity_add_dependency_cb()
363 	struct dma_fence *fence = entity->dependency;  in drm_sched_entity_add_dependency_cb()
366 	if (fence->context == entity->fence_context ||  in drm_sched_entity_add_dependency_cb()
367 	    fence->context == entity->fence_context + 1) {  in drm_sched_entity_add_dependency_cb()
373 		dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
385 		dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
386 		entity->dependency = fence;  in drm_sched_entity_add_dependency_cb()
387 		if (!dma_fence_add_callback(fence, &entity->cb,  in drm_sched_entity_add_dependency_cb()
396 	if (!dma_fence_add_callback(entity->dependency, &entity->cb,  in drm_sched_entity_add_dependency_cb()
400 	dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
411 struct drm_sched_job *drm_sched_entity_pop_job(struct drm_sched_entity *entity)  in drm_sched_entity_pop_job()  argument
413 	struct drm_gpu_scheduler *sched = entity->rq->sched;  in drm_sched_entity_pop_job()
416 	sched_job = to_drm_sched_job(spsc_queue_peek(&entity->job_queue));  in drm_sched_entity_pop_job()
420 	while ((entity->dependency =  in drm_sched_entity_pop_job()
421 			sched->ops->dependency(sched_job, entity))) {  in drm_sched_entity_pop_job()
422 		trace_drm_sched_job_wait_dep(sched_job, entity->dependency);  in drm_sched_entity_pop_job()
424 		if (drm_sched_entity_add_dependency_cb(entity))  in drm_sched_entity_pop_job()
429 	if (entity->guilty && atomic_read(entity->guilty))  in drm_sched_entity_pop_job()
432 	dma_fence_put(entity->last_scheduled);  in drm_sched_entity_pop_job()
433 	entity->last_scheduled = dma_fence_get(&sched_job->s_fence->finished);  in drm_sched_entity_pop_job()
435 	spsc_queue_pop(&entity->job_queue);  in drm_sched_entity_pop_job()
447 void drm_sched_entity_select_rq(struct drm_sched_entity *entity)  in drm_sched_entity_select_rq()  argument
453 	if (spsc_queue_count(&entity->job_queue) || entity->num_sched_list <= 1)  in drm_sched_entity_select_rq()
456 	fence = READ_ONCE(entity->last_scheduled);  in drm_sched_entity_select_rq()
460 	spin_lock(&entity->rq_lock);  in drm_sched_entity_select_rq()
461 	sched = drm_sched_pick_best(entity->sched_list, entity->num_sched_list);  in drm_sched_entity_select_rq()
462 	rq = sched ? &sched->sched_rq[entity->priority] : NULL;  in drm_sched_entity_select_rq()
463 	if (rq != entity->rq) {  in drm_sched_entity_select_rq()
464 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_select_rq()
465 		entity->rq = rq;  in drm_sched_entity_select_rq()
468 	spin_unlock(&entity->rq_lock);  in drm_sched_entity_select_rq()
484 			       struct drm_sched_entity *entity)  in drm_sched_entity_push_job()  argument
488 	trace_drm_sched_job(sched_job, entity);  in drm_sched_entity_push_job()
489 	atomic_inc(&entity->rq->sched->score);  in drm_sched_entity_push_job()
490 	WRITE_ONCE(entity->last_user, current->group_leader);  in drm_sched_entity_push_job()
491 	first = spsc_queue_push(&entity->job_queue, &sched_job->queue_node);  in drm_sched_entity_push_job()
496 		spin_lock(&entity->rq_lock);  in drm_sched_entity_push_job()
497 		if (entity->stopped) {  in drm_sched_entity_push_job()
498 			spin_unlock(&entity->rq_lock);  in drm_sched_entity_push_job()
503 		drm_sched_rq_add_entity(entity->rq, entity);  in drm_sched_entity_push_job()
504 		spin_unlock(&entity->rq_lock);  in drm_sched_entity_push_job()
505 		drm_sched_wakeup(entity->rq->sched);  in drm_sched_entity_push_job()