drm/qxl: allocate small objects top-down

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

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20191017132638.9693-6-kraxel@redhat.com

diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index 927ab917b834b09dd2e843d561c282786076743a..ad336c98a0cff2130b9d6869874d94e7c78b8bff 100644 (file)
--- 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)