netdev - Re: [RFC] multiqueue changes

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Message-ID: <20091008125325.GA9164@ff.dom.local>
Date:	Thu, 8 Oct 2009 12:53:25 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [RFC] multiqueue changes

On Thu, Oct 08, 2009 at 02:13:22PM +0200, Eric Dumazet wrote:
> Jarek Poplawski a écrit :
> > On Thu, Oct 08, 2009 at 09:03:44AM +0000, Jarek Poplawski wrote:
> > ...
> >> num_tx_queues. But it seems we should rather use more often
> >> real_num_tx_queue in schedulers code like dumps and maybe more
> >> (like e.g. sch_multiq does).
> > 
> > ...i.e. probably everywhere between dev_activate and dev_deactivate
> > all qdisc operations could use real_num_tx_queues (including a test
> > like: netif_is_real_multique), unless I miss something.
> 
> I am not sure David intent was being able to dynamically adjust real_num_tx_queue
> between 1 and num_tx_queue.

If so, then it looks like some drivers could misuse this intent.

Thanks for the explanation,
Jarek P.
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