From f2f12eb9c32bc7a714276d8862efac2e7c41bcbe Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 2 Feb 2021 12:40:01 +0100 Subject: drm/scheduler: provide scheduler score externally MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow multiple schedulers to share the load balancing score. This is useful when one engine has different hw rings. Signed-off-by: Christian König Reviewed-and-Tested-by: Leo Liu Link: https://patchwork.freedesktop.org/patch/msgid/20210204144405.2737-1-christian.koenig@amd.com --- drivers/gpu/drm/scheduler/sched_entity.c | 2 +- drivers/gpu/drm/scheduler/sched_main.c | 18 +++++++++--------- 2 files changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers/gpu/drm/scheduler') diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index c1ac3e4003c6..92d965b629c6 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -489,7 +489,7 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job, bool first; trace_drm_sched_job(sched_job, entity); - atomic_inc(&entity->rq->sched->score); + atomic_inc(entity->rq->sched->score); WRITE_ONCE(entity->last_user, current->group_leader); first = spsc_queue_push(&entity->job_queue, &sched_job->queue_node); diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c index 73fccc54268b..d82a7ebf6099 100644 --- a/drivers/gpu/drm/scheduler/sched_main.c +++ b/drivers/gpu/drm/scheduler/sched_main.c @@ -91,7 +91,7 @@ void drm_sched_rq_add_entity(struct drm_sched_rq *rq, if (!list_empty(&entity->list)) return; spin_lock(&rq->lock); - atomic_inc(&rq->sched->score); + atomic_inc(rq->sched->score); list_add_tail(&entity->list, &rq->entities); spin_unlock(&rq->lock); } @@ -110,7 +110,7 @@ void drm_sched_rq_remove_entity(struct drm_sched_rq *rq, if (list_empty(&entity->list)) return; spin_lock(&rq->lock); - atomic_dec(&rq->sched->score); + atomic_dec(rq->sched->score); list_del_init(&entity->list); if (rq->current_entity == entity) rq->current_entity = NULL; @@ -173,7 +173,7 @@ static void drm_sched_job_done(struct drm_sched_job *s_job) struct drm_gpu_scheduler *sched = s_fence->sched; atomic_dec(&sched->hw_rq_count); - atomic_dec(&sched->score); + atomic_dec(sched->score); trace_drm_sched_process_job(s_fence); @@ -732,7 +732,7 @@ drm_sched_pick_best(struct drm_gpu_scheduler **sched_list, continue; } - num_score = atomic_read(&sched->score); + num_score = atomic_read(sched->score); if (num_score < min_score) { min_score = num_score; picked_sched = sched; @@ -842,16 +842,15 @@ static int drm_sched_main(void *param) * @hw_submission: number of hw submissions that can be in flight * @hang_limit: number of times to allow a job to hang before dropping it * @timeout: timeout value in jiffies for the scheduler + * @score: optional score atomic shared with other schedulers * @name: name used for debugging * * Return 0 on success, otherwise error code. */ int drm_sched_init(struct drm_gpu_scheduler *sched, const struct drm_sched_backend_ops *ops, - unsigned hw_submission, - unsigned hang_limit, - long timeout, - const char *name) + unsigned hw_submission, unsigned hang_limit, long timeout, + atomic_t *score, const char *name) { int i, ret; sched->ops = ops; @@ -859,6 +858,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched, sched->name = name; sched->timeout = timeout; sched->hang_limit = hang_limit; + sched->score = score ? score : &sched->_score; for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_COUNT; i++) drm_sched_rq_init(sched, &sched->sched_rq[i]); @@ -868,7 +868,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched, spin_lock_init(&sched->job_list_lock); atomic_set(&sched->hw_rq_count, 0); INIT_DELAYED_WORK(&sched->work_tdr, drm_sched_job_timedout); - atomic_set(&sched->score, 0); + atomic_set(&sched->_score, 0); atomic64_set(&sched->job_id_count, 0); /* Each scheduler will run on a seperate kernel thread */ -- cgit