On Fri, Apr 12, 2013 at 07:10:13PM +0100, Chris Wilson wrote: > Haswell introduces a separate frequency domain for the ring (uncore). So > where we used to increase the CPU (IA) clock with GPU busyness, we now > need to scale the ring frequency directly instead. As the ring limits > our memory bandwidth, it is vital for performance that when the GPU is > busy, we increase the frequency of the ring to increase the available > memory bandwidth. > > v2: Fix the algorithm to actually use the scaled gpu frequency for the ring. > v3: s/max_ring_freq/min_ring_freq/ as that is what it is > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> > Cc: Jesse Barnes <jbarnes at virtuousgeek.org> > Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org> Queued for -next, thanks for the patch. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
