Commit b2241f18 authored May 25, 2017 by Chris Wilson

drm/i915: Only GGTT vma may be pinned and prevent shrinking

As only GGTT vma may be permanently pinned and are always at the head of
the object's vma list, as soon as we seen a ppGTT vma we can stop
searching for any_vma_pinned().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170525072528.11185-1-chris@chris-wilson.co.uk

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

parent 0ef34ad6

drivers/gpu/drm/i915/i915_gem_shrinker.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -65,9 +65,17 @@ static bool any_vma_pinned(struct drm_i915_gem_object *obj)
		{
		struct i915_vma *vma;

		list_for_each_entry(vma, &obj->vma_list, obj_link)
		list_for_each_entry(vma, &obj->vma_list, obj_link) {
		/* Only GGTT vma may be permanently pinned, and are always
		* at the start of the list. We can stop hunting as soon
		* as we see a ppGTT vma.
		*/
		if (!i915_vma_is_ggtt(vma))
		break;

		if (i915_vma_is_pinned(vma))
		return true;
		}

		return false;
		}