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SubjectRe: sched domains bringup race?
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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