Date: Sat, 16 Feb 2008 11:39:09 -0800
From: Arjan van de Ven <arjan@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
       Herbert Xu <herbert@gondor.apana.org.au>,
       "David S. Miller" <davem@davemloft.net>, netdev@vger.kernel.org,
       linux-kernel@vger.kernel.org
Subject: Re: include/linux/pcounter.h
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On Sat, 16 Feb 2008 11:26:18 -0800
Andrew Morton <akpm@linux-foundation.org> wrote:

> > indirect functions calls are everywhere in kernel, network, fs,
> > everywhere.
> 
> That doesn't make them fast.

just to emphasize this: an indirect function call is at least as expensive as an atomic operation on 
x86 cpus.... (if not more)

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