drm/i915: Shrink objects prior to hibernation
In an attempt to keep the hibernation image as same as possible, let's
try and discard any unwanted pages and our own page arrays.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160909190218.16831-1-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4b5364d..c8bd022 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4589,6 +4589,11 @@
int i915_gem_freeze_late(struct drm_i915_private *dev_priv)
{
struct drm_i915_gem_object *obj;
+ struct list_head *phases[] = {
+ &dev_priv->mm.unbound_list,
+ &dev_priv->mm.bound_list,
+ NULL
+ }, **p;
/* Called just before we write the hibernation image.
*
@@ -4599,16 +4604,18 @@
*
* To make sure the hibernation image contains the latest state,
* we update that state just before writing out the image.
+ *
+ * To try and reduce the hibernation image, we manually shrink
+ * the objects as well.
*/
- list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
- obj->base.read_domains = I915_GEM_DOMAIN_CPU;
- obj->base.write_domain = I915_GEM_DOMAIN_CPU;
- }
+ i915_gem_shrink_all(dev_priv);
- list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
- obj->base.read_domains = I915_GEM_DOMAIN_CPU;
- obj->base.write_domain = I915_GEM_DOMAIN_CPU;
+ for (p = phases; *p; p++) {
+ list_for_each_entry(obj, *p, global_list) {
+ obj->base.read_domains = I915_GEM_DOMAIN_CPU;
+ obj->base.write_domain = I915_GEM_DOMAIN_CPU;
+ }
}
return 0;