drm/ttm: implement LRU add callbacks v2

This allows fine grained control for the driver where to add a BO into the LRU.

v2: fix typo in comment

Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 542f9212727c..513f7f96b80a 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -440,6 +440,12 @@ struct ttm_bo_driver {
          * Called with LRU lock held immediately before the removal.
          */
         void (*lru_removal)(struct ttm_buffer_object *bo);
+
+        /**
+         * Return the list_head after which a BO should be inserted in the LRU.
+         */
+        struct list_head *(*lru_tail)(struct ttm_buffer_object *bo);
+        struct list_head *(*swap_lru_tail)(struct ttm_buffer_object *bo);
 };
 
 /**
@@ -757,6 +763,9 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man);
 extern void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo);
 extern void ttm_bo_add_to_lru(struct ttm_buffer_object *bo);
 
+struct list_head *ttm_bo_default_lru_tail(struct ttm_buffer_object *bo);
+struct list_head *ttm_bo_default_swap_lru_tail(struct ttm_buffer_object *bo);
+
 /**
  * __ttm_bo_reserve:
  *