Re: [PATCH] sched: Don't allow priority switch to realtime when thetask doesn't belong to init_task_group and when CONFIG_RT_GROUP_SCHED isn'tset

[Chris Friesen]

Peter Zijlstra wrote:
> On Mon, 2008-11-24 at 09:24 -0600, Chris Friesen wrote:
>
> > Peter Zijlstra wrote:

> > > Furthermore your statement shows another misconception, a group of
> > > ungrouped tasks doesn't make sense.
> >
> > Arguably there is such a group, which is "the set of all RT tasks".
>
>
> Sure, I understand that, and in fact that's how its implemented, no
> group is still one group (which is how you can bootstrap math from
> group/set theory).
>
> But its not a manageable group in the cgroup sense, its just the
> collection of RT tasks.

True, but it would be valuable to have statistics for how much cpu time 
the RT tasks are consuming.

Chris
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