netdev - Re: [PATCH net-next] net dst: use a percpu

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Message-ID: <1286832573.30423.93.camel@edumazet-laptop>
Date:	Mon, 11 Oct 2010 23:29:33 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net dst: use a percpu_counter to track entries

Le lundi 11 octobre 2010 à 13:07 -0700, David Miller a écrit :

> When I first read the subject line for this patch, I was
> scared, because I thought you were using a percpu counter
> for dst entry refcounts :-)
> 
> Anyways this is fine, applied, thanks!

I though about a crazy idea for loopback device (but not a percpu
counter for dst refcounts)

Add a cpu field somewhere so that each cpu manipulates a different dst.

Or maybe just never cache such dst, so that each tcp socket uses its own
dst.



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