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drm/ttm: add ttm_bo_move_to_lru_tail function v2

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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 <thellstrom@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2016-01-11 15:35:20 +01:00
committed by Alex Deucher
parent ed704a43e8
commit ab74961810
2 changed files with 31 additions and 0 deletions
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10
include/drm/ttm/ttm_bo_api.h
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@@ -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