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

Add some statistics how many bytes we have moved.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/ttm/ttm_bo.c

@@ -361,6 +361,7 @@ moved:
 	else
 		bo->offset = 0;
 
+	ctx->bytes_moved += bo->num_pages << PAGE_SHIFT;
 	return 0;
 
 out_err: