Acked-by: Roger He <Hongbo.He at amd.com> -----Original Message----- From: amd-gfx [mailto:amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Christian K?nig Sent: Sunday, March 25, 2018 6:58 PM To: linaro-mm-sig at lists.linaro.org; linux-media at vger.kernel.org; dri-devel at lists.freedesktop.org; amd-gfx at lists.freedesktop.org; sumit.semwal at linaro.org Subject: [PATCH 3/5] drm/ttm: remove the backing store if no placement is given Pipeline removal of the BOs backing store when the placement is given during validation. Signed-off-by: Christian König <christian.koenig at 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 98e06f8bf23b..17e821f01d0a 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1078,6 +1078,18 @@ 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. */ -- 2.14.1 _______________________________________________ amd-gfx mailing list amd-gfx at lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
