drm/i915: i915_gem_shrink_all() needs an awake device
Since to unbind an object, we may need a powered up device to access the GTT entries, we only shrink bound objects if awake. Callers to i915_gem_shrink_all() had to take this into account and take the rpm wakeref, but we can move this wakeref into the shrink_all itself for convenience and making the function live up to its name. Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170208104710.18089-1-chris@chris-wilson.co.ukReviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
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