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由 Chris Wilson 提交于
Since I have been using the BCS_TIMESTAMP to measure latency of execution upon the blitter ring, allow regular userspace to also read from that register. They are already allowed RCS_TIMESTAMP! Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Reviewed-by: NMatthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-32-chris@chris-wilson.co.uk
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