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Date: Thu, 11 Nov 2010 20:49:14 +0100
From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
To: Andi Kleen <ak@...ux.intel.com>
Cc: Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
fweisbec@...il.com, mingo@...e.hu, acme@...hat.com,
eranian@...gle.com
Subject: Re: [PATCH 1/3] perf-events: Add support for supplementary event
registers
On Thu, 2010-11-11 at 20:45 +0100, Andi Kleen wrote:
> > Can we make it so, that is, move that int inside the intel_percore
> > struct?
> >
>
> It's needed per cpu. Basically the flag says "bother to look into the
> percore structure"
> This way most of this is kept out of the fast paths. But one CPU in a core
> may need it and the other not.
>
> In principle it could be merged into some other cpuc flag word if you
> have any suggestions.
Nah, I missed that detail, having it as is seems fine.
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