Re: [RFC][PATCH 15/26] sched, numa: Implement hotplug hooks

Srivatsa S. Bhat
2012-03-19T12:27:42Z

On 03/19/2012 05:49 PM, Peter Zijlstra wrote:

> On Mon, 2012-03-19 at 17:46 +0530, Srivatsa S. Bhat wrote:
>>> + get_online_cpus();
>>> + cpu_notifier(numa_hotplug, 0);
>>
>>
>> ABBA deadlock!
>>
> Yeah, I know.. luckily it can't actually happen since early_initcalls
> are pre-smp. I could just leave out the get_online_cpus() thing.
>

Oh numa_init() is an early_initcall? Ok, I didn't observe.
In that case, its fine either way, with or without get_online_cpus()
stuff.

Regards,
Srivatsa S. Bhat