From: Chunming Zhou Date: Thu, 10 Jan 2019 09:56:39 +0000 (+0800) Subject: drm/ttm: add lru notify to bo driver v2 X-Git-Tag: v5.15~6763^2~26^2~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ae6d343541bb75958e9535d056adaf4ff6a66d6a;p=platform%2Fkernel%2Flinux-starfive.git drm/ttm: add lru notify to bo driver v2 allow driver do somethings when lru changed. v2: address Michel's comments. Signed-off-by: Chunming Zhou Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 0ec0839..de088c8 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -198,19 +198,22 @@ static void ttm_bo_ref_bug(struct kref *list_kref) void ttm_bo_del_from_lru(struct ttm_buffer_object *bo) { + struct ttm_bo_device *bdev = bo->bdev; + bool notify = false; + if (!list_empty(&bo->swap)) { list_del_init(&bo->swap); kref_put(&bo->list_kref, ttm_bo_ref_bug); + notify = true; } if (!list_empty(&bo->lru)) { list_del_init(&bo->lru); kref_put(&bo->list_kref, ttm_bo_ref_bug); + notify = true; } - /* - * TODO: Add a driver hook to delete from - * driver-specific LRU's here. - */ + if (notify && bdev->driver->del_from_lru_notify) + bdev->driver->del_from_lru_notify(bo); } void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 1021106..15829b2 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -381,6 +381,15 @@ struct ttm_bo_driver { */ int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset, void *buf, int len, int write); + + /** + * struct ttm_bo_driver member del_from_lru_notify + * + * @bo: the buffer object deleted from lru + * + * notify driver that a BO was deleted from LRU. + */ + void (*del_from_lru_notify)(struct ttm_buffer_object *bo); }; /**