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Date: Mon, 30 Mar 2015 09:32:19 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
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To: Steven Rostedt <rostedt@goodmis.org>
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Subject: Re: [for-next][PATCH 1/4] ring-buffer: Replace this_cpu_*() with
 __this_cpu_*()
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On Mon, 30 Mar 2015, Steven Rostedt wrote:

> Hmm,  I didn't realize there was an "and" version. I'm guessing this
> would bring down the instruction count even more?

Yes two segment prefixed instructions and a decrement.