Re: [PATCH 06/12] drm/i915: Show support for accurate sw PMU busyness tracking

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Quoting Tvrtko Ursulin (2019-02-04 12:14:38)
> 
> On 04/02/2019 08:41, Chris Wilson wrote:
> > Expose whether or not we support the PMU software tracking in our
> > scheduler capabilities, so userspace can query at runtime.
> 
> I am leaning towards thinking PMU is a backend and not the scheduler 
> feature. We could export it via engine discovery for instance.

The sw metrics are buggy. They include semaphore time on top of busy,
but historically that has always been separate (and how it's measured by
the HW).
-Chris
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