netdev - Re: [RFC] [PATCH] Don't run __qdisc

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Message-Id: <20090803.201504.213691148.davem@davemloft.net>
Date:	Mon, 03 Aug 2009 20:15:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	krkumar2@...ibm.com, jarkao2@...il.com, netdev@...r.kernel.org
Subject: Re: [RFC] [PATCH] Don't run __qdisc_run() on a stopped TX queue

From: Herbert Xu <herbert@...dor.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.
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