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authorChristian König <christian.koenig@amd.com>2016-01-11 15:35:20 +0100
committerAlex Deucher <alexander.deucher@amd.com>2016-01-13 18:21:21 +0100
commitab74961810ba7935b5f9643da10daaa36690f48e (patch)
treee821b843633d9869e7a74c56c1ced05170d01acf /drivers/gpu/drm/ttm
parentdrm/ttm: fix adding foreign BOs to the swap LRU (diff)
downloadlinux-ab74961810ba7935b5f9643da10daaa36690f48e.tar.xz
linux-ab74961810ba7935b5f9643da10daaa36690f48e.zip
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>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo.c21
1 files changed, 21 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.
*/