netdev - Re: [net-next PATCH] dql: add a burst attribute

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Message-ID: <1412088549.30721.84.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 30 Sep 2014 07:49:09 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	Florian Westphal <fw@...len.de>,
	Jesper Dangaard Brouer <brouer@...hat.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Daniel Borkmann <dborkman@...hat.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Alexander Duyck <alexander.duyck@...il.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Dave Taht <dave.taht@...il.com>,
	Toke Høiland-Jørgensen <toke@...e.dk>
Subject: Re: [net-next PATCH] dql: add a burst attribute

On Tue, 2014-09-30 at 07:26 -0700, Tom Herbert wrote:


> Yes, this is the wrong place to put it. DQL knows nothing about
> packets or technically even bytes, it's a generic library that deal
> with "objects" on a queue. I don't see how burst relates to this.

I wonder then why you put :

netdev_tx_completed_queue(struct netdev_queue *dev_queue,
			  unsigned int pkts, unsigned int bytes)

Really, I don't care _where_ the attribute is, as long we dont access
yet another cache line in fast path.



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