Re: RT scheduling and a way to make a process hang, unkillable

From: Dhaval Giani
Date: Mon Feb 23 2009 - 06:46:23 EST


On Tue, Feb 17, 2009 at 12:15:39PM +0100, Peter Zijlstra wrote:
> On Tue, 2009-02-17 at 15:45 +0530, Dhaval Giani wrote:
>
> > sched: Don't allow setuid to succeed if the user does not have rt bandwidth
> >
> > Corey Hickey reported that on using setuid to change the uid of a
> > rt process, the process would be unkillable and not be running.
> > This is because there was no rt runtime for that user group. Add
> > in a check to see if a user can attach an rt task to its task group.
>
> This looks good to me.
>
> Does anybody object to the -ENOSPC return value? Should we introduce
> -ENOTIME for that?
>
> Michael, Alan?
>

Hi,

Any comments on which return value to return? Should we introduce
-ENOTIME?

Corey mentioned he found ENOSPC confusing.

Thanks,
--
regards,
Dhaval
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