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Date: Mon, 08 Oct 2007 19:47:06 -0700 (PDT) From: David Miller <davem@...emloft.net> To: herbert@...dor.apana.org.au Cc: hadi@...erus.ca, jeff@...zik.org, peter.p.waskiewicz.jr@...el.com, krkumar2@...ibm.com, johnpol@....mipt.ru, kaber@...sh.net, shemminger@...ux-foundation.org, jagana@...ibm.com, Robert.Olsson@...a.slu.se, rick.jones2@...com, xma@...ibm.com, gaagaan@...il.com, netdev@...r.kernel.org, rdreier@...co.com, mcarlson@...adcom.com, mchan@...adcom.com, general@...ts.openfabrics.org, tgraf@...g.ch, randy.dunlap@...cle.com, sri@...ibm.com Subject: Re: [PATCH 2/3][NET_BATCH] net core use batching From: Herbert Xu <herbert@...dor.apana.org.au> Date: Tue, 9 Oct 2007 10:16:20 +0800 > On Mon, Oct 08, 2007 at 10:14:30PM -0400, jamal wrote: > > > > You forgot QDISC_RUNNING Dave;-> the above cant happen. > > Essentially at any one point in time, we are guaranteed that we can have > > multiple cpus enqueueing but only can be dequeueing (the one that > > managed to grab QDISC_RUNNING) i.e multiple producers to the qdisc queue > > but only one consumer. Only the dequeuer has access to the txlock. > > Good point. You had me worried for a sec :) > > Dave, Jamal's patch is fine as it is and doesn't actually create > any packet reordering. Ok, then, I'll un-revert. :-) - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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