Re: [PATCH v2] drm/i915/bdw: BDW Software Turbo

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On Wed, Jul 09, 2014 at 06:00:48PM -0700, Daisy Sun wrote:
> BDW supports GT C0 residency reporting in constant time unit. Driver calculates
> GT utilization based on C0 residency and adjusts RP frequency up/down
> accordingly.

This explanation is a bit thin on the ground for why you want to run
permanently at a single GPU frequency. And the algorithm looks primitive
at best.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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