drm/amdgpu: return new seq_no for amd_sched_push_job

It is clean to update last_queued_v_seq in the scheduler module
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -907,8 +907,6 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	if (amdgpu_enable_scheduler && parser->num_ibs) {
 		struct amdgpu_ring * ring =
 			amdgpu_cs_parser_get_ring(adev, parser);
-		parser->ibs[parser->num_ibs - 1].sequence = atomic64_inc_return(
-			&parser->ctx->rings[ring->idx].c_entity.last_queued_v_seq);
 		if (ring->is_pte_ring || (parser->bo_list && parser->bo_list->has_userptr)) {
 			r = amdgpu_cs_parser_prepare_job(parser);
 			if (r)
@@ -918,7 +916,8 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		parser->ring = ring;
 		parser->run_job = amdgpu_cs_parser_run_job;
 		parser->free_job = amdgpu_cs_parser_free_job;
-		amd_sched_push_job(ring->scheduler,
+		parser->ibs[parser->num_ibs - 1].sequence =
+				   amd_sched_push_job(ring->scheduler,
 				   &parser->ctx->rings[ring->idx].c_entity,
 				   parser);
 		cs->out.handle = parser->ibs[parser->num_ibs - 1].sequence;

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

@@ -109,7 +109,6 @@ int amdgpu_sched_ib_submit_kernel_helper(struct amdgpu_device *adev,
 {
 	int r = 0;
 	if (amdgpu_enable_scheduler) {
-		uint64_t v_seq;
 		struct amdgpu_cs_parser *sched_job =
 			amdgpu_cs_parser_create(adev,
 						owner,
@@ -119,16 +118,12 @@ int amdgpu_sched_ib_submit_kernel_helper(struct amdgpu_device *adev,
 			return -ENOMEM;
 		}
 		sched_job->free_job = free_job;
-		v_seq = atomic64_inc_return(&adev->kernel_ctx->rings[ring->idx].c_entity.last_queued_v_seq);
-		ibs[num_ibs - 1].sequence = v_seq;
-		amd_sched_push_job(ring->scheduler,
+		ibs[num_ibs - 1].sequence = amd_sched_push_job(ring->scheduler,
 				   &adev->kernel_ctx->rings[ring->idx].c_entity,
 				   sched_job);
 		r = amd_sched_wait_emit(
 			&adev->kernel_ctx->rings[ring->idx].c_entity,
-			v_seq,
-			false,
-			-1);
+			ibs[num_ibs - 1].sequence, false, -1);
 		if (r)
 			WARN(true, "emit timeout\n");
 	} else

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

@@ -371,7 +371,6 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
 
 	if (amdgpu_enable_scheduler) {
 		int r;
-		uint64_t v_seq;
 		sched_job = amdgpu_cs_parser_create(adev, AMDGPU_FENCE_OWNER_VM,
 						    adev->kernel_ctx, ib, 1);
 		if(!sched_job)
@@ -379,15 +378,11 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
 		sched_job->job_param.vm.bo = bo;
 		sched_job->run_job = amdgpu_vm_run_job;
 		sched_job->free_job = amdgpu_vm_free_job;
-		v_seq = atomic64_inc_return(&adev->kernel_ctx->rings[ring->idx].c_entity.last_queued_v_seq);
-		ib->sequence = v_seq;
-		amd_sched_push_job(ring->scheduler,
+		ib->sequence = amd_sched_push_job(ring->scheduler,
 				   &adev->kernel_ctx->rings[ring->idx].c_entity,
 				   sched_job);
 		r = amd_sched_wait_emit(&adev->kernel_ctx->rings[ring->idx].c_entity,
-					v_seq,
-					false,
-					-1);
+					ib->sequence, false, -1);
 		if (r)
 			DRM_ERROR("emit timeout\n");
 
@@ -521,7 +516,6 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
 
 		if (amdgpu_enable_scheduler) {
 			int r;
-			uint64_t v_seq;
 			sched_job = amdgpu_cs_parser_create(adev, AMDGPU_FENCE_OWNER_VM,
 							    adev->kernel_ctx,
 							    ib, 1);
@@ -530,15 +524,11 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
 			sched_job->job_param.vm.bo = pd;
 			sched_job->run_job = amdgpu_vm_run_job;
 			sched_job->free_job = amdgpu_vm_free_job;
-			v_seq = atomic64_inc_return(&adev->kernel_ctx->rings[ring->idx].c_entity.last_queued_v_seq);
-			ib->sequence = v_seq;
-			amd_sched_push_job(ring->scheduler,
+			ib->sequence = amd_sched_push_job(ring->scheduler,
 					   &adev->kernel_ctx->rings[ring->idx].c_entity,
 					   sched_job);
 			r = amd_sched_wait_emit(&adev->kernel_ctx->rings[ring->idx].c_entity,
-						v_seq,
-						false,
-						-1);
+						ib->sequence, false, -1);
 			if (r)
 				DRM_ERROR("emit timeout\n");
 		} else {
@@ -872,7 +862,6 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
 
 	if (amdgpu_enable_scheduler) {
 		int r;
-		uint64_t v_seq;
 		sched_job = amdgpu_cs_parser_create(adev, AMDGPU_FENCE_OWNER_VM,
 						    adev->kernel_ctx, ib, 1);
 		if(!sched_job)
@@ -883,15 +872,11 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
 		sched_job->job_param.vm_mapping.fence = fence;
 		sched_job->run_job = amdgpu_vm_bo_update_mapping_run_job;
 		sched_job->free_job = amdgpu_vm_free_job;
-		v_seq = atomic64_inc_return(&adev->kernel_ctx->rings[ring->idx].c_entity.last_queued_v_seq);
-		ib->sequence = v_seq;
-		amd_sched_push_job(ring->scheduler,
+		ib->sequence = amd_sched_push_job(ring->scheduler,
 				   &adev->kernel_ctx->rings[ring->idx].c_entity,
 				   sched_job);
 		r = amd_sched_wait_emit(&adev->kernel_ctx->rings[ring->idx].c_entity,
-					v_seq,
-					false,
-					-1);
+					ib->sequence, false, -1);
 		if (r)
 			DRM_ERROR("emit timeout\n");
 	} else {

drivers/gpu/drm/amd/scheduler/gpu_scheduler.c

@@ -293,12 +293,9 @@ int amd_context_entity_fini(struct amd_gpu_scheduler *sched,
  * @sched	The pointer to the scheduler
  * @c_entity    The pointer to amd_context_entity
  * @job		The pointer to job required to submit
- * return 0 if succeed. -1 if failed.
- *        -2 indicate queue is full for this client, client should wait untill
- *	     scheduler consum some queued command.
- *	  -1 other fail.
+ * return the virtual sequence number
 */
-int amd_sched_push_job(struct amd_gpu_scheduler *sched,
+uint64_t amd_sched_push_job(struct amd_gpu_scheduler *sched,
 		       struct amd_context_entity *c_entity,
 		       void *job)
 {
@@ -312,7 +309,8 @@ int amd_sched_push_job(struct amd_gpu_scheduler *sched,
 	}
 
 	wake_up_interruptible(&sched->wait_queue);
-	return 0;
+
+	return atomic64_inc_return(&c_entity->last_queued_v_seq);
 }
 
 /**

drivers/gpu/drm/amd/scheduler/gpu_scheduler.h

@@ -129,7 +129,7 @@ struct amd_gpu_scheduler *amd_sched_create(void *device,
 
 int amd_sched_destroy(struct amd_gpu_scheduler *sched);
 
-int amd_sched_push_job(struct amd_gpu_scheduler *sched,
+uint64_t amd_sched_push_job(struct amd_gpu_scheduler *sched,
 		       struct amd_context_entity *c_entity,
 		       void *job);