| From | "Christian König" <> | Subject | [PATCH 07/12] drm/ttm: remove the backing store if no placement is given | Date | Tue, 16 Apr 2019 20:38:36 +0200 |
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Pipeline removal of the BOs backing store when no placement is given during validation.
Signed-off-by: Christian König <christian.koenig@amd.com> --- drivers/gpu/drm/ttm/ttm_bo.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 41d07faa2eae..8e7e7caee9d5 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1161,6 +1161,18 @@ int ttm_bo_validate(struct ttm_buffer_object *bo, uint32_t new_flags; reservation_object_assert_held(bo->resv); + + /* + * Remove the backing store if no placement is given. + */ + if (!placement->num_placement && !placement->num_busy_placement) { + ret = ttm_bo_pipeline_gutting(bo); + if (ret) + return ret; + + return ttm_tt_create(bo, false); + } + /* * Check whether we need to move buffer. */ -- 2.17.1
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