[Intel-gfx] [PATCH 7/7] drm/i915: Upclock on the first residency calculation

[Chris Wilson]

On Tue, Mar 14, 2017 at 03:17:29PM +0200, Mika Kuoppala wrote:
> After ei reset, upclock as default if we don't have a previous
> timestamp at hand. We might at sometimes waste one interval
> of more power but also be more agile if we need to ramp up.

Why? There is nothing special about the first EI interval - it doesn't
correspond to GPU activity. We already start from rpe which is about 75%
of max on that platform. At the first sign that we are underperforming
we will overcompensate.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre