From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH][net-next] vxlan: reduce dirty cache line in
 vxlan_find_mac
Date: Sun, 19 Aug 2018 11:11:40 -0700 (PDT)
Message-ID: <20180819.111140.2282097352981887816.davem@davemloft.net>
References: <1534649768-24074-1-git-send-email-lirongqing@baidu.com>
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To: lirongqing@baidu.com
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From: Li RongQing <lirongqing@baidu.com>
Date: Sun, 19 Aug 2018 11:36:08 +0800

> vxlan_find_mac() unconditionally set f->used for every packet,
> this cause a cache miss for every packet, since remote, hlist
> and used of vxlan_fdb share the same cacheline.
> 
> With this change f->used is set only if not equal to jiffies
> This gives up to 5% speed-up with small packets.
> 
> Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
> Signed-off-by: Li RongQing <lirongqing@baidu.com>

Please resubmit this when the net-next tree opens back up.

Thanks.