[Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw

[Daniel Vetter]

On Thu, Apr 10, 2014 at 08:29:55PM +0000, O'Rourke, Tom wrote:
> >> > Higher RC6 residency is observed using timeout mode instead of EI
> >> > mode.  This applies to Broadwell only.
> >> > The difference is particularly noticeable with video playback.
> >> >
> >> > Issue: VIZ-3778
> >> > Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d
> >> > Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
> >>
> >> How recent a nightly branch have you used to obtain these results?
> >> Chris just fixed some serious bugs in the gpu booster logic which
> >> would have affected all intermediate workloads.
> >> -Daniel
> >
> >He must not be using nightly if he has any BDW RC6 residency at all.
> >
> [TOR:] Ben is correct.  I was testing mostly with a kernel for Android.
> I also tested with Ben's broadwell branch and saw similar improvement.

Ok I think it'd be good to have this when we actually merge/enable the
final pieces of the bdw rc6 code. Can you please work together with Ben to
make sure this patch isn't lost?

Or who is shepherding bdw rc6 nowadays?
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch