From a13abffa40a54ac51179b2c387dd0e50d433f047 Mon Sep 17 00:00:00 2001 From: Andres Rodriguez Date: Fri, 2 Jun 2017 15:09:00 -0400 Subject: [PATCH 1977/4131] drm/amd/sched: allow clients to edit an entity's rq v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is useful for changing an entity's priority at runtime. v2: don't modify the order of amd_sched_entity members Reviewed-by: Christian König Signed-off-by: Andres Rodriguez Acked-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/scheduler/gpu_scheduler.c | 24 ++++++++++++++++++++++-- drivers/gpu/drm/amd/scheduler/gpu_scheduler.h | 3 +++ 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c index 37e8b8d..6e42358 100644 --- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c +++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c @@ -133,6 +133,7 @@ int amd_sched_entity_init(struct amd_gpu_scheduler *sched, entity->rq = rq; entity->sched = sched; + spin_lock_init(&entity->rq_lock); spin_lock_init(&entity->queue_lock); r = kfifo_alloc(&entity->job_queue, jobs * sizeof(void *), GFP_KERNEL); if (r) @@ -204,7 +205,6 @@ static bool amd_sched_entity_is_ready(struct amd_sched_entity *entity) void amd_sched_entity_fini(struct amd_gpu_scheduler *sched, struct amd_sched_entity *entity) { - struct amd_sched_rq *rq = entity->rq; int r; if (!amd_sched_entity_is_initialized(sched, entity)) @@ -218,7 +218,7 @@ void amd_sched_entity_fini(struct amd_gpu_scheduler *sched, else r = wait_event_killable(sched->job_scheduled, amd_sched_entity_is_idle(entity)); - amd_sched_rq_remove_entity(rq, entity); + amd_sched_entity_set_rq(entity, NULL); if (r) { struct amd_sched_job *job; @@ -257,6 +257,24 @@ static void amd_sched_entity_clear_dep(struct dma_fence *f, struct dma_fence_cb dma_fence_put(f); } +void amd_sched_entity_set_rq(struct amd_sched_entity *entity, + struct amd_sched_rq *rq) +{ + if (entity->rq == rq) + return; + + spin_lock(&entity->rq_lock); + + if (entity->rq) + amd_sched_rq_remove_entity(entity->rq, entity); + + entity->rq = rq; + if (rq) + amd_sched_rq_add_entity(rq, entity); + + spin_unlock(&entity->rq_lock); +} + bool amd_sched_dependency_optimized(struct dma_fence* fence, struct amd_sched_entity *entity) { @@ -354,7 +372,9 @@ static bool amd_sched_entity_in(struct amd_sched_job *sched_job) /* first job wakes up scheduler */ if (first) { /* Add the entity to the run queue */ + spin_lock(&entity->rq_lock); amd_sched_rq_add_entity(entity->rq, entity); + spin_unlock(&entity->rq_lock); amd_sched_wakeup(sched); } return added; diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h index cf7e92d..cd7130b 100644 --- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h +++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h @@ -38,6 +38,7 @@ struct amd_sched_rq; struct amd_sched_entity { struct list_head list; struct amd_sched_rq *rq; + spinlock_t rq_lock; struct amd_gpu_scheduler *sched; spinlock_t queue_lock; @@ -153,6 +154,8 @@ int amd_sched_entity_init(struct amd_gpu_scheduler *sched, void amd_sched_entity_fini(struct amd_gpu_scheduler *sched, struct amd_sched_entity *entity); void amd_sched_entity_push_job(struct amd_sched_job *sched_job); +void amd_sched_entity_set_rq(struct amd_sched_entity *entity, + struct amd_sched_rq *rq); int amd_sched_fence_slab_init(void); void amd_sched_fence_slab_fini(void); -- 2.7.4