drm/i915: Break after walking all GGTT vma in bump_inactive_ggtt
Since commit db6c2b41 ("drm/i915: Store the vma in an rbtree under the object") the vma are once again sorted into GGTT first, then ppGTT so that the typical case of walking the GGTT vma can stop as soon as we find a non-ppGTT. Apply that optimisation. Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161223145804.6605-1-chris@chris-wilson.co.uk
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