drm/i915: Consolidate gen8_emit_pipe_control
We have a few open coded instances in the execlists code and an almost suitable helper in intel_ringbuf.c We can consolidate to a single helper if we change the existing helper to emit directly to ring buffer memory and move the space reservation outside it. v2: Drop memcpy for memset. (Chris Wilson) Signed-off-by:Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170216122325.31391-2-tvrtko.ursulin@linux.intel.com
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