We only need to wait for the contended lock when the reservation object is shared or when we want to remove everything. A trylock should be sufficient in all other cases.
Signed-off-by: Christian König <christian.koe...@amd.com> --- drivers/gpu/drm/ttm/ttm_bo.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index ba5b48617bba..122a964cac40 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -586,12 +586,17 @@ static bool ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) ddestroy); kref_get(&bo->list_kref); list_move_tail(&bo->ddestroy, &removed); - spin_unlock(&glob->lru_lock); - reservation_object_lock(bo->resv, NULL); + if (remove_all || bo->resv != &bo->ttm_resv) { + spin_unlock(&glob->lru_lock); + reservation_object_lock(bo->resv, NULL); - spin_lock(&glob->lru_lock); - ttm_bo_cleanup_refs(bo, false, !remove_all, true); + spin_lock(&glob->lru_lock); + ttm_bo_cleanup_refs(bo, false, !remove_all, true); + + } else if (reservation_object_trylock(bo->resv)) { + ttm_bo_cleanup_refs(bo, false, !remove_all, true); + } kref_put(&bo->list_kref, ttm_bo_release_list); spin_lock(&glob->lru_lock); -- 2.11.0 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel