rainbow and pam

[Jim Gettys]

I don't think we want to pick up maintenance of this kernel patch...
                 - Jim


On Sat, 2008-08-16 at 18:32 -0400, Benjamin M. Schwartz wrote:
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> victor wrote:
> | Is that documented? I don't see it in man page. I can try it, if
> | I have a code example (says there it does not take a priority
> | value, so is it just a matter of setting the policy?)
> 
> Unfortunately, SCHED_ISO is only available in a patch by Con Kolivas, the
> latest version of which is for 2.6.22.  It seems that no one has attempted
> to maintain that patch for newer kernels.  Someone would have to put in
> quite a bit of work to maintain it for newer kernels, though it appears
> that the mainline scheduler authors would potentially like to include
> SCHED_ISO functionality.
> 
> I also noticed another new scheduler patch from just this week:
> http://article.gmane.org/gmane.linux.kernel/719589 shows a new patch that
> provides SCHED_SPORADIC, which appears to be a different sort of safe
> real-time scheduler.  I am less familiar with it, though it is drawn
> directly from the POSIX spec.
> 
> In any event, I think it is more practical to try to hunt down the
> regression in the OLPC kernel than to attempt fancy real-time stuff.
> Perhaps someone can assist Victor in a kernel bisection to find the change?
> 
> - --Ben
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-- 
Jim Gettys <jg at laptop.org>
One Laptop Per Child