[Spice-devel] [PATCH 5/5] drm/qxl: allocate small objects top-down

[Gerd Hoffmann]

qxl uses small buffer objects for qxl commands.
Allocate them top-down to reduce fragmentation.

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 drivers/gpu/drm/qxl/qxl_object.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index 927ab917b834..ad336c98a0cf 100644
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -54,9 +54,14 @@ bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
 void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
 {
 	u32 c = 0;
-	u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0;
+	u32 pflag = 0;
 	unsigned int i;
 
+	if (pinned)
+		pflag |= TTM_PL_FLAG_NO_EVICT;
+	if (qbo->tbo.base.size <= PAGE_SIZE)
+		pflag |= TTM_PL_FLAG_TOPDOWN;
+
 	qbo->placement.placement = qbo->placements;
 	qbo->placement.busy_placement = qbo->placements;
 	if (domain == QXL_GEM_DOMAIN_VRAM)
-- 
2.18.1