netdev - Re: [PATCH net-next] udp: avoid one cache line miss in recvmsg()

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Message-Id: <20161121.112712.1751786462749387402.davem@davemloft.net>
Date:   Mon, 21 Nov 2016 11:27:12 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next] udp: avoid one cache line miss in recvmsg()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 18 Nov 2016 17:18:03 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> UDP_SKB_CB(skb)->partial_cov is located at offset 66 in skb,
> requesting a cold cache line being read in cpu cache.
> 
> We can avoid this cache line miss for UDP sockets,
> as partial_cov has a meaning only for UDPLite.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.