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drm/i915: Apply the full CPU domain markup before freezing 

Let's not take any chances by using a shortcut to mark the objects as in
the CPU domain upon freezing (all pages will be written to disk and so
on restore all objects will start from the CPU domain). Currently, we
simply mark the objects as being in the CPU domain, bypassing the
flushes. Let's call the full domain transfer function so that we have
less special case code (and symmetry with the suspend path) even though
it will be mostly redundant.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180601144125.18026-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-06-01 15:41:25 +01:00
parent 9776f47253
commit 95c778daec
1 changed files with 13 additions and 12 deletions
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25
drivers/gpu/drm/i915/i915_gem.c
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@ -5718,16 +5718,17 @@ int i915_gem_freeze(struct drm_i915_private *dev_priv)
return 0;
}
int i915_gem_freeze_late(struct drm_i915_private *dev_priv)
int i915_gem_freeze_late(struct drm_i915_private *i915)
{
struct drm_i915_gem_object *obj;
struct list_head *phases[] = {
&dev_priv->mm.unbound_list,
&dev_priv->mm.bound_list,
&i915->mm.unbound_list,
&i915->mm.bound_list,
NULL
}, **p;
}, **phase;
/* Called just before we write the hibernation image.
/*
* Called just before we write the hibernation image.
*
* We need to update the domain tracking to reflect that the CPU
* will be accessing all the pages to create and restore from the
@ -5741,15 +5742,15 @@ int i915_gem_freeze_late(struct drm_i915_private *dev_priv)
* the objects as well, see i915_gem_freeze()
*/
i915_gem_shrink(dev_priv, -1UL, NULL, I915_SHRINK_UNBOUND);
i915_gem_drain_freed_objects(dev_priv);
i915_gem_shrink(i915, -1UL, NULL, I915_SHRINK_UNBOUND);
i915_gem_drain_freed_objects(i915);
spin_lock(&dev_priv->mm.obj_lock);
for (p = phases; *p; p++) {
list_for_each_entry(obj, *p, mm.link)
__start_cpu_write(obj);
mutex_lock(&i915->drm.struct_mutex);
for (phase = phases; *phase; phase++) {
list_for_each_entry(obj, *phase, mm.link)
WARN_ON(i915_gem_object_set_to_cpu_domain(obj, true));
}
spin_unlock(&dev_priv->mm.obj_lock);
mutex_unlock(&i915->drm.struct_mutex);
return 0;
}