drm/i915: Show bounds of active request in the ring on GPU hang
Include the position of the active request in the ring, and display that alongside the current RING registers (on a GPU hang). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161004201132.21801-6-chris@chris-wilson.co.uk
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