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Date: Mon, 3 Mar 2014 16:41:44 -0500
From: Don Zickus <dzickus@...hat.com>
To: Andi Kleen <andi@...stfloor.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
Joe Mario <jmario@...hat.com>,
Davidlohr Bueso <davidlohr@...com>, acme@...stprotocols.net,
LKML <linux-kernel@...r.kernel.org>, jolsa@...hat.com,
fowles@...each.com, eranian@...gle.com,
Arnaldo Carvalho de Melo <acme@...hat.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>,
Richard Fowles <rfowles@...hat.com>
Subject: Re: [PATCH 08/19] perf c2c: Shared data analyser
On Mon, Mar 03, 2014 at 10:38:36PM +0100, Andi Kleen wrote:
> > Thoughts on how to determine which load is a potential store? I agree
> > every store needs to load the cacheline, but I wasn't sure if there was an
> > approach that could be applied to determine anything useful.
>
> HITM covers both load and stores.
>
> But it may have some skid. The main advantage of the address is that
> it is skidless.
I guess I don't follow, how does having a skidless address help me when I
don't have any stores (on a Westmere for example)?
Cheers,
Don
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