Re: sched domains bringup race?

[Nick Piggin]

Dave Hansen wrote:
> On Thu, 2004-07-15 at 20:03, Nick Piggin wrote:
>
> > It shouldn't because sched_init sets up dummy domains for
> > all runqueues.
> >
> > Obviously something is going wrong somewhere though.
>
>
> Hmmm, but there still might be some concurrency problems, right?  There
> isn't any locking while the setup is being done, so are all of the
> intermediate initialization states valid?  Or, could one of the CPUs be
> catching the init code in the middle of an operation?

cpu_attach_domain is supposed to be able to do the switchover
without any races.
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