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From: David Miller <davem@davemloft.net>
Subject: Re: [RFC] [PATCH] Don't run __qdisc_run() on a stopped TX queue
Date: Mon, 03 Aug 2009 20:15:04 -0700 (PDT)
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From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 29 Jul 2009 11:15:48 +0800

> This can be done with a lockless ring buffer.  Each CPU would
> deposit its packets in a qdisc ringer buffer assigned to it.
> The qdisc would then run on a single CPU harvesting all the
> ring buffers in some fair manner.

There was a recent posting (I think today) on lkml of a memory barrier
based lockless queue, I think it was named kfifo, that could
facilitate this.