[Nouveau] "enable ctxprog xfer only when we need it to save power" introduces big performance regression

[Marcin Slusarz]

On Sat, Oct 29, 2011 at 07:08:01PM +0200, Marcin Slusarz wrote:
> Hi
> 
> I've bisected pretty big performance regression (nv92):
> 
> $ git bisect good
> b2737681d5442f05ab6419e05468c3d2511a5ced is the first bad commit
> commit b2737681d5442f05ab6419e05468c3d2511a5ced
> Author: Martin Peres <martin.peres at ensi-bourges.fr>
> Date:   Sat Jul 30 23:08:45 2011 +0200
> 
>     drm/nv50/gr: enable ctxprog xfer only when we need it to save power

Weird, reverting it on top of current git does not restore it - in
glxgears it's even worse (-~50%).

Marcin