Quoting YueHaibing (2020-07-15 04:21:04)
> It is not used since commit 058179e72e09 ("drm/i915/gt: Replace
> hangcheck by heartbeats")
>
> Signed-off-by: YueHaibing <yuehaibing at huawei.com>
Indeed, it is no more.
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris