From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH 2/2 v4] xps: Transmit Packet Steering
Date: Wed, 27 Oct 2010 06:46:08 +0200
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To: Tom Herbert <therbert@google.com>
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Le mardi 26 octobre 2010 =C3=A0 20:38 -0700, Tom Herbert a =C3=A9crit :
> The benefits of XPS are improved locality in the per queue data
> structures.  Also, transmit completions are more likely to be done
> nearer to the sending thread, so this should promote locality back
> to the socket on free (e.g. UDP). =20


I dont understand this part of changelog :
We now early orphan packets before giving them to device.
(see skb_orphan_try())

So at completion time, we dont touch socket anymore.

However, we free skb, so this promotes locality on kmem caches, iff tx
completion is run on same cpu.