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Date: Thu, 01 Nov 2012 17:09:03 +0800
From: Shan Wei <shanwei88@gmail.com>
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CC: Christoph Lameter <cl@linux.com>, dipankar@in.ibm.com,
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Subject: Re: [PATCH 7/9] rcu:  use this_cpu_ptr per-cpu helper instead of
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Paul E. McKenney said, at 2012/11/1 4:08:
> 
> One thing to keep in mind -- the only purpose of this is to diffuse
> memory contention.  So there is no need to disable preemption.

same question to me.
Christoph, maybe __this_cpu_read is a better choice which don't disable preemption.

> 
> 							Thanx, Paul
> 
>