Re: [patch 2/2] cpu hotplug notifier for updating sched domains

[Nick Piggin]

nathanl@xxxxxxxxxxxxxx wrote:

> Register a cpu hotplug notifier which reinitializes the scheduler
> domains hierarchy.  The notifier temporarily attaches all running cpus
> to a "dummy" domain (like we currently do during boot) to avoid
> balancing.  It then calls arch_init_sched_domains which rebuilds the
> "real" domains and reattaches the cpus to them.
>
> Also change __init attributes to __devinit where necessary.
>
> Signed-off-by: Nathan Lynch <nathanl@xxxxxxxxxxxxxx>

Thanks Nathan, this looks great.

I think the next step is to now make the setup code only use cpu_online_map
and get rid of everywhere I had been doing cpus_and(tmp, ..., 
cpu_online_map).
This may also make your patch 1/2 unnecessary? What do you think?

Nick

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