51 int drm_sched_entity_init(struct drm_sched_entity *entity,  in drm_sched_entity_init()  argument
58 	if (!(entity && rq_list && (num_rq_list == 0 || rq_list[0])))  in drm_sched_entity_init()
61 	memset(entity, 0, sizeof(struct drm_sched_entity));  in drm_sched_entity_init()
62 	INIT_LIST_HEAD(&entity->list);  in drm_sched_entity_init()
63 	entity->rq = NULL;  in drm_sched_entity_init()
64 	entity->guilty = guilty;  in drm_sched_entity_init()
65 	entity->num_rq_list = num_rq_list;  in drm_sched_entity_init()
66 	entity->rq_list = kcalloc(num_rq_list, sizeof(struct drm_sched_rq *),  in drm_sched_entity_init()
68 	if (!entity->rq_list)  in drm_sched_entity_init()
72 		entity->rq_list[i] = rq_list[i];  in drm_sched_entity_init()
75 		entity->rq = rq_list[0];  in drm_sched_entity_init()
77 	entity->last_scheduled = NULL;  in drm_sched_entity_init()
79 	spin_lock_init(&entity->rq_lock);  in drm_sched_entity_init()
80 	spsc_queue_init(&entity->job_queue);  in drm_sched_entity_init()
82 	atomic_set(&entity->fence_seq, 0);  in drm_sched_entity_init()
83 	entity->fence_context = dma_fence_context_alloc(2);  in drm_sched_entity_init()
96 static bool drm_sched_entity_is_idle(struct drm_sched_entity *entity)  in drm_sched_entity_is_idle()  argument
100 	if (list_empty(&entity->list) ||  in drm_sched_entity_is_idle()
101 	    spsc_queue_count(&entity->job_queue) == 0)  in drm_sched_entity_is_idle()
114 bool drm_sched_entity_is_ready(struct drm_sched_entity *entity)  in drm_sched_entity_is_ready()  argument
116 	if (spsc_queue_peek(&entity->job_queue) == NULL)  in drm_sched_entity_is_ready()
119 	if (READ_ONCE(entity->dependency))  in drm_sched_entity_is_ready()
133 drm_sched_entity_get_free_sched(struct drm_sched_entity *entity)  in drm_sched_entity_get_free_sched()  argument
139 	for (i = 0; i < entity->num_rq_list; ++i) {  in drm_sched_entity_get_free_sched()
140 		struct drm_gpu_scheduler *sched = entity->rq_list[i]->sched;  in drm_sched_entity_get_free_sched()
142 		if (!entity->rq_list[i]->sched->ready) {  in drm_sched_entity_get_free_sched()
150 			rq = entity->rq_list[i];  in drm_sched_entity_get_free_sched()
169 long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout)  in drm_sched_entity_flush()  argument
175 	if (!entity->rq)  in drm_sched_entity_flush()
178 	sched = entity->rq->sched;  in drm_sched_entity_flush()
187 					drm_sched_entity_is_idle(entity),  in drm_sched_entity_flush()
191 				    drm_sched_entity_is_idle(entity));  in drm_sched_entity_flush()
195 	last_user = cmpxchg(&entity->last_user, current->group_leader, NULL);  in drm_sched_entity_flush()
198 		spin_lock(&entity->rq_lock);  in drm_sched_entity_flush()
199 		entity->stopped = true;  in drm_sched_entity_flush()
200 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_flush()
201 		spin_unlock(&entity->rq_lock);  in drm_sched_entity_flush()
235 static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity)  in drm_sched_entity_kill_jobs()  argument
240 	while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) {  in drm_sched_entity_kill_jobs()
251 		if (!entity->last_scheduled) {  in drm_sched_entity_kill_jobs()
256 		r = dma_fence_add_callback(entity->last_scheduled,  in drm_sched_entity_kill_jobs()
275 void drm_sched_entity_fini(struct drm_sched_entity *entity)  in drm_sched_entity_fini()  argument
279 	if (entity->rq) {  in drm_sched_entity_fini()
280 		sched = entity->rq->sched;  in drm_sched_entity_fini()
281 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_fini()
287 	if (spsc_queue_count(&entity->job_queue)) {  in drm_sched_entity_fini()
295 		if (entity->dependency) {  in drm_sched_entity_fini()
296 			dma_fence_remove_callback(entity->dependency,  in drm_sched_entity_fini()
297 						  &entity->cb);  in drm_sched_entity_fini()
298 			dma_fence_put(entity->dependency);  in drm_sched_entity_fini()
299 			entity->dependency = NULL;  in drm_sched_entity_fini()
302 		drm_sched_entity_kill_jobs(entity);  in drm_sched_entity_fini()
305 	dma_fence_put(entity->last_scheduled);  in drm_sched_entity_fini()
306 	entity->last_scheduled = NULL;  in drm_sched_entity_fini()
307 	kfree(entity->rq_list);  in drm_sched_entity_fini()
318 void drm_sched_entity_destroy(struct drm_sched_entity *entity)  in drm_sched_entity_destroy()  argument
320 	drm_sched_entity_flush(entity, MAX_WAIT_SCHED_ENTITY_Q_EMPTY);  in drm_sched_entity_destroy()
321 	drm_sched_entity_fini(entity);  in drm_sched_entity_destroy()
331 	struct drm_sched_entity *entity =  in drm_sched_entity_clear_dep()  local
334 	entity->dependency = NULL;  in drm_sched_entity_clear_dep()
345 	struct drm_sched_entity *entity =  in drm_sched_entity_wakeup()  local
349 	drm_sched_wakeup(entity->rq->sched);  in drm_sched_entity_wakeup()
369 void drm_sched_entity_set_priority(struct drm_sched_entity *entity,  in drm_sched_entity_set_priority()  argument
374 	spin_lock(&entity->rq_lock);  in drm_sched_entity_set_priority()
376 	for (i = 0; i < entity->num_rq_list; ++i)  in drm_sched_entity_set_priority()
377 		drm_sched_entity_set_rq_priority(&entity->rq_list[i], priority);  in drm_sched_entity_set_priority()
379 	if (entity->rq) {  in drm_sched_entity_set_priority()
380 		drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_set_priority()
381 		drm_sched_entity_set_rq_priority(&entity->rq, priority);  in drm_sched_entity_set_priority()
382 		drm_sched_rq_add_entity(entity->rq, entity);  in drm_sched_entity_set_priority()
385 	spin_unlock(&entity->rq_lock);  in drm_sched_entity_set_priority()
397 static bool drm_sched_entity_add_dependency_cb(struct drm_sched_entity *entity)  in drm_sched_entity_add_dependency_cb()  argument
399 	struct drm_gpu_scheduler *sched = entity->rq->sched;  in drm_sched_entity_add_dependency_cb()
400 	struct dma_fence *fence = entity->dependency;  in drm_sched_entity_add_dependency_cb()
403 	if (fence->context == entity->fence_context ||  in drm_sched_entity_add_dependency_cb()
404 	    fence->context == entity->fence_context + 1) {  in drm_sched_entity_add_dependency_cb()
410 		dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
422 		dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
423 		entity->dependency = fence;  in drm_sched_entity_add_dependency_cb()
424 		if (!dma_fence_add_callback(fence, &entity->cb,  in drm_sched_entity_add_dependency_cb()
433 	if (!dma_fence_add_callback(entity->dependency, &entity->cb,  in drm_sched_entity_add_dependency_cb()
437 	dma_fence_put(entity->dependency);  in drm_sched_entity_add_dependency_cb()
448 struct drm_sched_job *drm_sched_entity_pop_job(struct drm_sched_entity *entity)  in drm_sched_entity_pop_job()  argument
450 	struct drm_gpu_scheduler *sched = entity->rq->sched;  in drm_sched_entity_pop_job()
453 	sched_job = to_drm_sched_job(spsc_queue_peek(&entity->job_queue));  in drm_sched_entity_pop_job()
457 	while ((entity->dependency =  in drm_sched_entity_pop_job()
458 			sched->ops->dependency(sched_job, entity))) {  in drm_sched_entity_pop_job()
459 		trace_drm_sched_job_wait_dep(sched_job, entity->dependency);  in drm_sched_entity_pop_job()
461 		if (drm_sched_entity_add_dependency_cb(entity))  in drm_sched_entity_pop_job()
466 	if (entity->guilty && atomic_read(entity->guilty))  in drm_sched_entity_pop_job()
469 	dma_fence_put(entity->last_scheduled);  in drm_sched_entity_pop_job()
470 	entity->last_scheduled = dma_fence_get(&sched_job->s_fence->finished);  in drm_sched_entity_pop_job()
472 	spsc_queue_pop(&entity->job_queue);  in drm_sched_entity_pop_job()
484 void drm_sched_entity_select_rq(struct drm_sched_entity *entity)  in drm_sched_entity_select_rq()  argument
489 	if (spsc_queue_count(&entity->job_queue) || entity->num_rq_list <= 1)  in drm_sched_entity_select_rq()
492 	fence = READ_ONCE(entity->last_scheduled);  in drm_sched_entity_select_rq()
496 	rq = drm_sched_entity_get_free_sched(entity);  in drm_sched_entity_select_rq()
497 	if (rq == entity->rq)  in drm_sched_entity_select_rq()
500 	spin_lock(&entity->rq_lock);  in drm_sched_entity_select_rq()
501 	drm_sched_rq_remove_entity(entity->rq, entity);  in drm_sched_entity_select_rq()
502 	entity->rq = rq;  in drm_sched_entity_select_rq()
503 	spin_unlock(&entity->rq_lock);  in drm_sched_entity_select_rq()
519 			       struct drm_sched_entity *entity)  in drm_sched_entity_push_job()  argument
523 	trace_drm_sched_job(sched_job, entity);  in drm_sched_entity_push_job()
524 	atomic_inc(&entity->rq->sched->num_jobs);  in drm_sched_entity_push_job()
525 	WRITE_ONCE(entity->last_user, current->group_leader);  in drm_sched_entity_push_job()
526 	first = spsc_queue_push(&entity->job_queue, &sched_job->queue_node);  in drm_sched_entity_push_job()
531 		spin_lock(&entity->rq_lock);  in drm_sched_entity_push_job()
532 		if (entity->stopped) {  in drm_sched_entity_push_job()
533 			spin_unlock(&entity->rq_lock);  in drm_sched_entity_push_job()
538 		drm_sched_rq_add_entity(entity->rq, entity);  in drm_sched_entity_push_job()
539 		spin_unlock(&entity->rq_lock);  in drm_sched_entity_push_job()
540 		drm_sched_wakeup(entity->rq->sched);  in drm_sched_entity_push_job()