This notifies the driver that a BO is about to be released.
Releasing a BO also invokes the move_notify callback from ttm_bo_cleanup_memtype_use, but that happens too late for anything that would add fences to the BO and require a delayed delete.
Signed-off-by: Felix Kuehling Felix.Kuehling@amd.com --- drivers/gpu/drm/ttm/ttm_bo.c | 3 +++ include/drm/ttm/ttm_bo_driver.h | 10 ++++++++++ 2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 58c403eda04e..2070e8a57ed8 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -671,6 +671,9 @@ static void ttm_bo_release(struct kref *kref) struct ttm_bo_device *bdev = bo->bdev; struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];
+ if (bo->bdev->driver->release_notify) + bo->bdev->driver->release_notify(bo); + drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node); ttm_mem_io_lock(man, false); ttm_mem_io_free_vm(bo); diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index c9b8ba492f24..d69121c43e58 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -390,6 +390,16 @@ struct ttm_bo_driver { * notify driver that a BO was deleted from LRU. */ void (*del_from_lru_notify)(struct ttm_buffer_object *bo); + + /** + * Notify the driver that we're about to release a BO + * + * @bo: BO that is about to be released + * + * Gives the driver a chance to do any cleanup, including + * adding fences that may force a delayed delete + */ + void (*release_notify)(struct ttm_buffer_object *bo); };
/**