linux-kernel - Re: [PATCH 31/45] alpha/smp: Use get/put_online_cpus

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Message-ID: <51C744E6.1040905@linux.vnet.ibm.com>
Date:	Mon, 24 Jun 2013 00:26:38 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Matt Turner <mattst88@...il.com>
CC:	tglx@...utronix.de, peterz@...radead.org, tj@...nel.org,
	oleg@...hat.com, paulmck@...ux.vnet.ibm.com, rusty@...tcorp.com.au,
	mingo@...nel.org, akpm@...ux-foundation.org, namhyung@...nel.org,
	walken@...gle.com, vincent.guittot@...aro.org,
	laijs@...fujitsu.com, rostedt@...dmis.org,
	wangyun@...ux.vnet.ibm.com, xiaoguangrong@...ux.vnet.ibm.com,
	sbw@....edu, fweisbec@...il.com, zhong@...ux.vnet.ibm.com,
	nikunj@...ux.vnet.ibm.com, linux-pm@...r.kernel.org,
	linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	linux-alpha@...r.kernel.org
Subject: Re: [PATCH 31/45] alpha/smp: Use get/put_online_cpus_atomic() to
 prevent CPU offline

On 06/23/2013 11:20 PM, Matt Turner wrote:
> On Sun, Jun 23, 2013 at 6:45 AM, Srivatsa S. Bhat
> <srivatsa.bhat@...ux.vnet.ibm.com> wrote:
>> Once stop_machine() is gone from the CPU offline path, we won't be able
>> to depend on disabling preemption to prevent CPUs from going offline
>> from under us.
>>
>> Use the get/put_online_cpus_atomic() APIs to prevent CPUs from going
>> offline, while invoking from atomic context.
>>
>> Also, remove the non-ASCII character present in this file!
> 
> It's not non-ASCII. It's a page break.
> 

Oh, ok..

Regards,
Srivatsa S. Bhat

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