linux-kernel - Re: [PATCH 0/2] Add percpu smp cacheline align section

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Message-ID: <Pine.LNX.4.64.0705071029470.5447@schroedinger.engr.sgi.com>
Date:	Mon, 7 May 2007 10:30:16 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
cc:	"Yu, Fenghua" <fenghua.yu@...el.com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Add percpu smp cacheline align section

On Mon, 7 May 2007, Siddha, Suresh B wrote:

> > Ummm... The per cpu area is for exclusive use of a particular processor.
> > If there is contention in the per cpu area then a data object needs to be
> > removed from the per cpu area because the object is *not* accessed only
> > from a certain cpu.
> 
> Christoph, This data(that is being accessed by other cpus) also needs
> to be defined for each cpu and as such it is getting appended (and
> clearly seperated in a different section) to the data which is accessed
> only by the local cpu.
> 
> Not sure what your concern is.

Call this area "cpu shared" or so?

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