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Date: Fri, 09 May 2014 21:08:56 -0400
From: Waiman Long <waiman.long@hp.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, linux-arch@vger.kernel.org,
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        Paolo Bonzini <paolo.bonzini@gmail.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
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        Rik van Riel <riel@redhat.com>,
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        Oleg Nesterov <oleg@redhat.com>, Gleb Natapov <gleb@redhat.com>,
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Subject: Re: [PATCH v10 08/19] qspinlock: Make a new qnode structure to support
 virtualization
References: <1399474907-22206-1-git-send-email-Waiman.Long@hp.com> <1399474907-22206-9-git-send-email-Waiman.Long@hp.com> <20140508190459.GQ2844@laptop.programming.kicks-ass.net>
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On 05/08/2014 03:04 PM, Peter Zijlstra wrote:
> On Wed, May 07, 2014 at 11:01:36AM -0400, Waiman Long wrote:
>>   /*
>> + * To have additional features for better virtualization support, it is
>> + * necessary to store additional data in the queue node structure. So
>> + * a new queue node structure will have to be defined and used here.
>> + */
>> +struct qnode {
>> +	struct mcs_spinlock mcs;
>> +};
> You can ditch this entire patch; its pointless, just add a new
> DEFINE_PER_CPU for the para-virt muck.

Yes, I can certainly merge it to the next one in the series. I break it 
out to make each individual patch smaller, more single-purpose and 
easier to review.

-Longman