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

[O'Rourke, Tom]

>> > 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.