diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_object.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 1375ff85b08a..19bec0dbfa38 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -104,7 +104,7 @@ bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo) void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) { - u32 c = 0; + u32 c = 0, i; rbo->placement.fpfn = 0; rbo->placement.lpfn = 0; @@ -131,6 +131,17 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; rbo->placement.num_placement = c; rbo->placement.num_busy_placement = c; + + /* + * Use two-ended allocation depending on the buffer size to + * improve fragmentation quality. + * 512kb was measured as the most optimal number. + */ + if (rbo->tbo.mem.size > 512 * 1024) { + for (i = 0; i < c; i++) { + rbo->placements[i] |= TTM_PL_FLAG_TOPDOWN; + } + } } int radeon_bo_create(struct radeon_device *rdev, |