netdev - Re: [PATCH] NET: Multiqueue network device support.

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Date:	Thu, 07 Jun 2007 21:35:36 -0400
From:	jamal <hadi@...erus.ca>
To:	Sridhar Samudrala <sri@...ibm.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	David Miller <davem@...emloft.net>, auke-jan.h.kok@...el.com,
	jeff@...zik.org, kaber@...sh.net, peter.p.waskiewicz.jr@...el.com,
	netdev@...r.kernel.org, jesse.brandeburg@...el.com
Subject: Re: [PATCH] NET: Multiqueue network device support.

On Thu, 2007-07-06 at 17:31 -0700, Sridhar Samudrala wrote:

> If the QDISC_RUNNING flag guarantees that only one CPU can call
> dev->hard_start_xmit(), then why do we need to hold netif_tx_lock
> for non-LLTX drivers?

I havent stared at other drivers, but for e1000 seems to me 
even if you got rid of LLTX that netif_tx_lock is unnecessary.
Herbert?

cheers,
jamal

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