linux-kernel - Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

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Message-ID: <Pine.LNX.4.64.0711121112410.26682@schroedinger.engr.sgi.com>
Date:	Mon, 12 Nov 2007 11:14:06 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
cc:	David Miller <davem@...emloft.net>, akpm@...ux-foundation.org,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	mathieu.desnoyers@...ymtl.ca, penberg@...helsinki.fi
Subject: Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu
 access overhead

On Mon, 12 Nov 2007, Herbert Xu wrote:

> David Miller <davem@...emloft.net> wrote:
> > 
> > Each IP compression tunnel instance does an alloc_percpu().
> 
> Actually all IPComp tunnels share one set of objects which are
> allocated per-cpu.  So only the first tunnel would do that.

Ahh so the need to be able to expand per cpu memory storage on demand 
is not as critical as we thought.

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