diff options
| author | Christian König | 2016-01-11 15:35:20 +0100 |
|---|---|---|
| committer | Alex Deucher | 2016-01-13 12:21:21 -0500 |
| commit | ab74961810ba7935b5f9643da10daaa36690f48e (patch) | |
| tree | e821b843633d9869e7a74c56c1ced05170d01acf | |
| parent | ed704a43e84cc536081423dcd3491acf2791aaeb (diff) | |
drm/ttm: add ttm_bo_move_to_lru_tail function v2
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>
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 21 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 10 |
2 files changed, 31 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 3ea9a01c960c..4cbf26555093 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -228,6 +228,27 @@ void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) } EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); +void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo) +{ + struct ttm_bo_device *bdev = bo->bdev; + struct ttm_mem_type_manager *man; + + lockdep_assert_held(&bo->resv->lock.base); + + if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { + list_del_init(&bo->swap); + list_del_init(&bo->lru); + + } else { + if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) + list_move_tail(&bo->swap, &bo->glob->swap_lru); + + man = &bdev->man[bo->mem.mem_type]; + list_move_tail(&bo->lru, &man->lru); + } +} +EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); + /* * Call bo->mutex locked. */ diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index c768ddfbe53c..afae2316bd43 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 |