netdev - Re: [PATCH] net: speedup dst

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Message-Id: <20081114.005437.09284570.davem@davemloft.net>
Date:	Fri, 14 Nov 2008 00:54:37 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	dada1@...mosbay.com
Cc:	netdev@...r.kernel.org, shemminger@...tta.com
Subject: Re: [PATCH] net: speedup dst_release()

From: Eric Dumazet <dada1@...mosbay.com>
Date: Fri, 14 Nov 2008 09:09:31 +0100

> During tbench/oprofile sessions, I found that dst_release() was in third position.
 ...
> Instead of first checking the refcount value, then decrement it,
> we use atomic_dec_return() to help CPU to make the right memory transaction
> (ie getting the cache line in exclusive mode)
 ...
> Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

This looks great, applied, thanks Eric.
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