linux-kernel - Re: [PATCH] mm/init: cpu_hotplug_init() must be initialized before SLAB

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Date:	Tue, 23 Jun 2009 08:56:23 +0530
From:	Sachin Sant <sachinp@...ibm.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [PATCH] mm/init: cpu_hotplug_init() must be initialized before
 SLAB

Linus Torvalds wrote:
> On Tue, 23 Jun 2009, Benjamin Herrenschmidt wrote:
>
>   
>> +	/*
>> +	 * This initializes the mutex used by get/put_online_cpus()
>> +	 * which is used by SLAB
>> +	 */
>> +	cpu_hotplug_init();
>>     
>
> Oh fudge it.
>
> Why not get rid of that stupid thing, rather than have that subtle 
> dependency and a comment for it.
>
> IOW, does this simpler alternative also work?
This fixes the problem for me.

Thanks
-Sachin


-- 

---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------

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