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From: David Miller <davem@davemloft.net>
Subject: Re: [patch] Performance Counters for Linux, v2
Date: Tue, 09 Dec 2008 03:11:20 -0800 (PST)
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From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 9 Dec 2008 12:02:46 +0100

> 
> * stephane eranian <eranian@googlemail.com> wrote:
> 
> > > There's also more generic x86 support: all 4 generic PMCs of Nehalem 
> > > / Core i7 are supported - i've run 4 instances of KernelTop and they 
> > > used up four separate PMCs.
> >
> > Core/Atom have 5 counters, Nehalem has 7. Why are you not using all of 
> > them already?
> 
> no, Nehalem has 4 generic purpose PMCs and 3 fixed-purpose PMCs (7 
> total),
 ...
> Saying that it has 7 is misleading.

Even you just did.