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drm/i915: Shrink objects prior to hibernation

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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
This commit is contained in:
Chris Wilson 2016-09-09 20:02:18 +01:00
parent 851ba2d697
commit 7aab2d534e
1 changed files with 14 additions and 7 deletions
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21
drivers/gpu/drm/i915/i915_gem.c
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@ -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.
*
@ -4599,16 +4604,18 @@ 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) {
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;