Intel i915 / GEM throttling / 2.6.31-rc

[Colin Guthrie]

'Twas brillig, and Eric Anholt at 03/08/09 23:43 did gyre and gimble:
> On Mon, 2009-08-03 at 17:20 +0200, Sven Arvidsson wrote:
>> On Mon, 2009-08-03 at 16:58 +0200, Michał Kazior wrote:
>>> Since the inclusion of a GEM throttling commit [1] to the 2.6.31
>>> release candidate I started to have serious issues using 3D
>>> acceleration.
>>>
>> [...]
>>> Are you guys aware of this issue ? Any other thoughts ?
>> Eric Anholt posted a patch on the mesa3d-dev list, which seems to be
>> made for use with the new throttling behaviour. I don't think it has
>> been commited yet though? 
>>
>> http://www.nabble.com/-PATCH--intel%3A-Use-a-new-DRI2-extension-to-throttle-the-number-of-outstanding-frames.-td24609475.html
> 
> Yeah, review was "you're working too hard, do this simpler thing."  I
> hadn't gotten around to writing it yet.
> 
> commit 0828579a658af01a64b5e699175dc9bbbedcd685
> Author: Eric Anholt <eric at anholt.net>
> Date:   Tue Jul 21 11:23:18 2009 -0700
> 
>     intel: Wait on the last swapbuffers to complete before queuing a new one.

Should this commit be recommended in the release notes on the 
intellinuxgrapics.org website?

If this causes issues with the .31 kernel and performance it's would be 
a good idea to ensure people know about it :)

Col


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Colin Guthrie
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