On Fri, May 16, 2014 at 3:23 AM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
On Thu, May 15, 2014 at 08:13:05PM -0400, Rodrigo Vivi wrote:You know that userspace has been waiting for a PSR flag for over a year
> 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.
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
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