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Commit 7aab2d53 authored by Chris Wilson's avatar Chris Wilson
Browse files

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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160909190218.16831-1-chris@chris-wilson.co.uk
parent 851ba2d6

drivers/gpu/drm/i915/i915_gem.c

+14 −7
Original line number Diff line number Diff line
@@ -4589,6 +4589,11 @@ void i915_gem_load_cleanup(struct drm_device *dev) 
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.

	 *
@@ -4599,17 +4604,19 @@ int i915_gem_freeze_late(struct drm_i915_private *dev_priv) 
	 *

	 * 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) {

	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;

}