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6233cac9c9
Since the events may be processed out of order (due to per-cpu ringbuffers) we need to be careful to associated wait pairs in order to compute the correct elapsed time. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This is a simple overlay showing current GPU activity. An asynchronous overlay is used, rendered by the CPU to avoid introducing any extra work on the GPU that we wish to monitor. The x11-overlay backend requires xf86-video-intel 2.21.15 or later, with SNA enabled. As it requires access to debug information, it needs to be run as root.