drm/ttm: add number of bytes moved to the operation context

Add some statistics how many bytes we have moved.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Tested-by: NDieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: NMichel Dänzer <michel.daenzer@amd.com>
Acked-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/ttm/ttm_bo.c

@@ -361,6 +361,7 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
 	else
 		bo->offset = 0;
 
+	ctx->bytes_moved += bo->num_pages << PAGE_SHIFT;
 	return 0;
 
 out_err:

include/drm/ttm/ttm_bo_api.h

@@ -270,6 +270,7 @@ struct ttm_bo_kmap_obj {
 struct ttm_operation_ctx {
 	bool interruptible;
 	bool no_wait_gpu;
+	uint64_t bytes_moved;
 };
 
 /**