The "iGoogle bug"

[Bernardo Innocenti]

Bernardo Innocenti wrote:

>> In the short term, one quick and dirty fix would be to disable the EXA
>> upload hook.  The driver may even become somewhat faster because we
>> avoid the extra copy!
> 
> Here's a version of amd_drv with this kludge implemented and full debug
> symbols enabled:
> 
>   http://www.codewiz.org/pub/amd_drv.so.13  <- built for Xorg 1.3
>   http://www.codewiz.org/pub/amd_drv.so.14  <- built for Xorg 1.4
> 
> Aleph, would you mind installing it in your test environment and run
> some of your benchmarks before and after the cure?

Results are here:

  https://dev.laptop.org/ticket/3352#comment:10
  https://dev.laptop.org/ticket/3352#comment:11

Considering Ahmdal's law, I'd say this patch *greatly* improves
performance in amd_drv.

Is it ok to commit, for now?

-- 
   //  Bernardo Innocenti - http://www.codewiz.org/
 \X/ One Laptop Per Child - http://www.laptop.org/