Re: [PATCH 8/9] drm/i915: Remove intel_flip_work infrastructure

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On Wed, Jul 19, 2017 at 02:07:36PM +0100, Chris Wilson wrote:
> Quoting Daniel Vetter (2017-07-19 13:55:01)
> > This gets rid of all the interactions between the legacy flip code and
> > the modeset code. Yay!
> 
> Including our missed vblank boosting. (That's been dead for a while.)

Hm right, but should be easy to add (and bonus, for every display update,
not just flips) in the intel_sw_fence_wait function. Can you pls point me
at what function I should call to reverse-boost an i915_sw_fence (and only
that)?

Then we could queue up a vblank callback that fires on the next vblank for
any of the CRTC in the update and boosts the i915_sw_fence. If we just
boost the fence (instead of the context or something) it should also be
easy to filter out boosting when the request has completed meanwhile.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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