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drm/ttm: Use only DRM_MM_SEARCH_BELOW for TTM_PL_FLAG_TOPDOWN

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DRM_MM_SEARCH_BEST gets the smallest hole which can fit the BO. That seems
against the idea of TTM_PL_FLAG_TOPDOWN:

* The smallest hole may be in the overall bottom of the area
* If the hole isn't much larger than the BO, it doesn't make much
  difference whether the BO is placed at the bottom or at the top of the
  hole

Reviewed-by: Lauri Kasanen <cand@gmx.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2014-10-28 18:35:04 +09:00 committed by Alex Deucher
parent c165812cbf
commit 507d0ca71b
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/ttm/ttm_bo_manager.c
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@ -69,7 +69,7 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
return -ENOMEM;
if (place->flags & TTM_PL_FLAG_TOPDOWN) {
sflags |= DRM_MM_SEARCH_BELOW;
sflags = DRM_MM_SEARCH_BELOW;
aflags = DRM_MM_CREATE_TOP;
}