[PATCH 09/13] drm/amd: add block entity function

[Chunming Zhou]

Change-Id: Ia0378640962eef362569e0bbe090aea1ca083a55
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
---
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.c | 24 ++++++++++++++++++++++++
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.h |  3 +++
 2 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
index f96aa82..71b5f1a 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
@@ -110,6 +110,26 @@ amd_sched_rq_select_entity(struct amd_sched_rq *rq)
 }
 
 /**
+ * block all entity of this run queue
+ *
+ * @rq		The run queue to check.
+ *
+ */
+int amd_sched_rq_block_entity(struct amd_sched_rq *rq, bool block)
+{
+	struct amd_sched_entity *entity;
+
+	spin_lock(&rq->lock);
+
+	list_for_each_entry(entity, &rq->entities, list)
+		entity->block = block;
+
+	spin_unlock(&rq->lock);
+
+	return 0;
+}
+
+/**
  * Init a context entity used by scheduler when submit to HW ring.
  *
  * @sched	The pointer to the scheduler
@@ -134,6 +154,7 @@ int amd_sched_entity_init(struct amd_gpu_scheduler *sched,
 	INIT_LIST_HEAD(&entity->list);
 	entity->rq = rq;
 	entity->sched = sched;
+	entity->block = false;
 
 	spin_lock_init(&entity->queue_lock);
 	r = kfifo_alloc(&entity->job_queue, jobs * sizeof(void *), GFP_KERNEL);
@@ -186,6 +207,9 @@ static bool amd_sched_entity_is_idle(struct amd_sched_entity *entity)
  */
 static bool amd_sched_entity_is_ready(struct amd_sched_entity *entity)
 {
+	if (entity->block)
+		return false;
+
 	if (kfifo_is_empty(&entity->job_queue))
 		return false;
 
diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
index 7cbbbfb..a1c0073 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
@@ -52,6 +52,8 @@ struct amd_sched_entity {
 
 	struct fence			*dependency;
 	struct fence_cb			cb;
+
+	bool                            block;
 };
 
 /**
@@ -155,4 +157,5 @@ int amd_sched_job_init(struct amd_sched_job *job,
 		       void *owner);
 void amd_sched_hw_job_reset(struct amd_gpu_scheduler *sched);
 void amd_sched_job_recovery(struct amd_gpu_scheduler *sched);
+int amd_sched_rq_block_entity(struct amd_sched_rq *rq, bool block);
 #endif
-- 
1.9.1