[PATCH 2/5] drm/ttm: Add DRM_MM_SEARCH_BELOW for TTM_PL_FLAG_TOPDOWN

[Michel Dänzer]

From: Michel Dänzer <michel.daen...@amd.com>

If the BO should be placed at the top of the area, we should start looking
for holes from the top.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo_manager.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c 
b/drivers/gpu/drm/ttm/ttm_bo_manager.c
index 964387f..1e93f6c 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
@@ -55,6 +55,7 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager 
*man,
        struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
        struct drm_mm *mm = &rman->mm;
        struct drm_mm_node *node = NULL;
+       enum drm_mm_search_flags sflags = DRM_MM_SEARCH_BEST;
        enum drm_mm_allocator_flags aflags = DRM_MM_CREATE_DEFAULT;
        unsigned long lpfn;
        int ret;
@@ -67,15 +68,16 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager 
*man,
        if (!node)
                return -ENOMEM;

-       if (place->flags & TTM_PL_FLAG_TOPDOWN)
+       if (place->flags & TTM_PL_FLAG_TOPDOWN) {
+               sflags |= DRM_MM_SEARCH_BELOW;
                aflags = DRM_MM_CREATE_TOP;
+       }

        spin_lock(&rman->lock);
        ret = drm_mm_insert_node_in_range_generic(mm, node, mem->num_pages,
                                          mem->page_alignment, 0,
                                          place->fpfn, lpfn,
-                                         DRM_MM_SEARCH_BEST,
-                                         aflags);
+                                         sflags, aflags);
        spin_unlock(&rman->lock);

        if (unlikely(ret)) {
-- 
2.1.1