[Intel-gfx] [Intel-gfx 1/1] drm/i915/guc: Don't update engine busyness stats too frequently

[Teres Alexis, Alan Previn]

> Who did you find is doing the sampling in the real world use case? AFAIR 
> if one one is querying busyness, I thought there would only be the GuC 
> ping worker which runs extremely infrequently (to avoid some counter 
> overflow).
> 
> Regards,
> 
> Tvrtko
> 
> > 

Hi Tvrtko, the case where we are launching many tiny transcode workloads in quick succession sees the gt_unpark/park
getting his hundreds or thousands of time - this is where the biggest hit comes from (as per the worst case example
number in the comment). 

...alan