[Intel-gfx] [PATCH 6/7] drm/i915/pmu: Add running counter

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-04-05 13:39:22)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> We add a PMU counter to expose the number of requests currently executing
> on the GPU.
> 
> This is useful to analyze the overall load of the system.
> 
> v2:
>  * Rebase.
>  * Drop floating point constant. (Chris Wilson)
> 
> v3:
>  * Change scale to 1024 for faster arithmetics. (Chris Wilson)
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

Do we want these separate in the final push? Is there value in reverting
one but not the others? They seem a triumvirate.
-Chris