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drm/ttm: remove the backing store if no placement is given

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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>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/353994/?series=73646&rev=1
This commit is contained in:
Christian König 2018-03-15 16:48:20 +01:00
parent bb42df4662
commit d2588d2ded
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/ttm/ttm_bo.c
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@ -1196,6 +1196,18 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
uint32_t new_flags;
dma_resv_assert_held(bo->base.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.
*/