From ab74961810ba7935b5f9643da10daaa36690f48e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 11 Jan 2016 15:35:20 +0100 Subject: drm/ttm: add ttm_bo_move_to_lru_tail function v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows the drivers to move a BO to the end of the LRU without removing and adding it again. v2: Make it more robust, handle pinned and swapable BOs as well. Reviewed-by: Thomas Hellstrom Signed-off-by: Christian König Signed-off-by: Alex Deucher --- include/drm/ttm/ttm_bo_api.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/drm') diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index c768ddf..afae231 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -383,6 +383,16 @@ extern void ttm_bo_add_to_lru(struct ttm_buffer_object *bo); */ extern int ttm_bo_del_from_lru(struct ttm_buffer_object *bo); +/** + * ttm_bo_move_to_lru_tail + * + * @bo: The buffer object. + * + * Move this BO to the tail of all lru lists used to lookup and reserve an + * object. This function must be called with struct ttm_bo_global::lru_lock + * held, and is used to make a BO less likely to be considered for eviction. + */ +extern void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo); /** * ttm_bo_lock_delayed_workqueue -- cgit v1.1