On Fri, May 16, 2014 at 3:23 AM, Chris Wilson <chris@chris-wilson.co.uk>wrote:

> On Thu, May 15, 2014 at 08:13:05PM -0400, Rodrigo Vivi wrote:
> > The perfect solution for psr_exit is the hardware tracking the changes
> and
> > doing the psr exit by itself. This scenario works for HSW and BDW with
> some
> > environments like Gnome and Wayland.
> >
> > However there are many other scenarios that this isn't true. Mainly one
> right
> > now is KDE users on HSW and BDW with PSR on. User would miss many screen
> > updates. For instances any key typed could be seen only when mouse
> cursor is
> > moved. So this patch introduces the ability of trigger PSR exit on
> kernel side
> > on some common cases that.
>
> You know that userspace has been waiting for a PSR flag for over a year
> now so that it can use the more efficient rendering paths when it makes
> sense.
>

yeah... this item is lingering on my to do list... but reaching a point
where I won't be able to continue postponing it ;)

> What happened to the front buffer tracking?

What front buffer tracking? hehe
I'm wondering about this since I started looking to fbc and psr and could
never find a reliable way.


-Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre
>



-- 
Rodrigo Vivi
Blog: http://blog.vivi.eng.br