On Tue, Feb 11, 2014 at 09:33:56AM -0700, Toshi Kani wrote:
>
> I agree that introducing a reader-writer semaphore allows concurrent
> executions. Adding yet another hotplug lock is a bit unfortunate,
> though.
>
I agree with this last part. We already have enough locks for
cpu-hotplug. Another one sounds one too many!!
> This may be a dumb question, but can't we simply do this way?
>
> get_online_cpus();
>
> for_each_online_cpu(cpu)
> init_cpu(cpu);
>
> put_online_cpus();
>
-------- Someone chooses to hotplug a cpu here ------
-------- But this subsystem might miss out on knowing
about it since it hasn't registered its
notifier yet!
> register_cpu_notifier(&foobar_cpu_notifier);
>
> Thanks,
> -Toshi
>
--
Thanks and Regards
gautham.
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