Message-ID: <4FC48A14.70008@linux.vnet.ibm.com>
Date: Tue, 29 May 2012 14:04:28 +0530
From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: Yong Zhang <yong.zhang0@gmail.com>, linux-kernel@vger.kernel.org,
        ralf@linux-mips.org, sshtylyov@mvista.com, david.daney@cavium.com,
        nikunj@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, axboe@kernel.dk,
        mingo@kernel.org, tglx@linutronix.de, akpm@linux-foundation.org
Subject: Re: [RFC PATCH 00/10] Cleanup ipi_call_lock[_irq]()/ipi_call_unlock[_irq]()
References: <1338275765-3217-1-git-send-email-yong.zhang0@gmail.com> <1338280115.14636.26.camel@twins>
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On 05/29/2012 01:58 PM, Peter Zijlstra wrote:


> That said, is there an alternative to stop_machine on the down side?
> 
> I guess flipping the cpu offline and then doing synchronize_sched()
> should suffice.
> 


Yes I think so. Even Paul McKenney had suggested this.

Regards,
Srivatsa S. Bhat

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