drm/scheduler: rename dependency callback into prepare_job

This now matches much better what this is doing.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014084641.128280-14-christian.koenig@amd.com

drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

@@ -238,7 +238,7 @@ int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
 }
 
 static struct dma_fence *
-amdgpu_job_dependency(struct drm_sched_job *sched_job,
+amdgpu_job_prepare_job(struct drm_sched_job *sched_job,
 		      struct drm_sched_entity *s_entity)
 {
 	struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
@@ -327,7 +327,7 @@ void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 }
 
 const struct drm_sched_backend_ops amdgpu_sched_ops = {
-	.dependency = amdgpu_job_dependency,
+	.prepare_job = amdgpu_job_prepare_job,
 	.run_job = amdgpu_job_run,
 	.timedout_job = amdgpu_job_timedout,
 	.free_job = amdgpu_job_free_cb

drivers/gpu/drm/scheduler/sched_entity.c

@@ -396,8 +396,8 @@ drm_sched_job_dependency(struct drm_sched_job *job,
 	if (!xa_empty(&job->dependencies))
 		return xa_erase(&job->dependencies, job->last_dependency++);
 
-	if (job->sched->ops->dependency)
-		return job->sched->ops->dependency(job, entity);
+	if (job->sched->ops->prepare_job)
+		return job->sched->ops->prepare_job(job, entity);
 
 	return NULL;
 }

include/drm/gpu_scheduler.h

@@ -320,7 +320,7 @@ struct drm_sched_job {
 	 */
 	union {
 		struct dma_fence_cb		finish_cb;
-		struct work_struct 		work;
+		struct work_struct		work;
 	};
 
 	uint64_t			id;
@@ -368,18 +368,17 @@ enum drm_gpu_sched_stat {
  */
 struct drm_sched_backend_ops {
 	/**
-	 * @dependency:
+	 * @prepare_job:
 	 *
 	 * Called when the scheduler is considering scheduling this job next, to
 	 * get another struct dma_fence for this job to block on.  Once it
 	 * returns NULL, run_job() may be called.
 	 *
-	 * If a driver exclusively uses drm_sched_job_add_dependency() and
-	 * drm_sched_job_add_implicit_dependencies() this can be ommitted and
-	 * left as NULL.
+	 * Can be NULL if no additional preparation to the dependencies are
+	 * necessary. Skipped when jobs are killed instead of run.
 	 */
-	struct dma_fence *(*dependency)(struct drm_sched_job *sched_job,
-					struct drm_sched_entity *s_entity);
+	struct dma_fence *(*prepare_job)(struct drm_sched_job *sched_job,
+					 struct drm_sched_entity *s_entity);
 
 	/**
          * @run_job: Called to execute the job once all of the dependencies