On Wed, 15 Jan 2014 14:10:26 +0900 Sangjung Woo <sangjung....@samsung.com> 
wrote:

> As the notifier_block name (i.e. foobar_cpu_notifer) is different from
> the parameter (i.e.foobar_cpu_notifier) of register function, that is
> definitely error and it also makes readers confused.
> 

btw, that document doesn't mention hotcpu_notifier(), which is actually
the preferred means of registration.  Because it causes all the hotplug
code to be elided when CONFIG_HOTPLUG_CPU=n, without using ifdefs.

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