drm/ttm: Add release_notify callback to ttm_bo_driver (274840e5) · Commits · 戴 / test

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> Reviewed-by:

Christian König <christian.koenig@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/ttm/ttm_bo.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);

include/drm/ttm/ttm_bo_driver.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -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);
		};

		/**

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