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[Xen-devel] Re: Performance overhead of paravirt_ops on native identifie

To: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: Performance overhead of paravirt_ops on native identified
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Thu, 14 May 2009 07:05:15 -0700
Cc: Nick Piggin <npiggin@xxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Xin, Xiaohui" <xiaohui.xin@xxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, rostedt <rostedt@xxxxxxxxxxxxxxxxxxxxx>, "Li, Xin" <xin.li@xxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>
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Peter Zijlstra wrote:
> 
> This sounds remarkably like what the dynamic function call tracer does.
> 

I'm sure this has been invented before... probably more than once.  Far
too many things we invent don't get generalized.

        -hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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