netdev - Re: [PATCH 1/2] net: Allow to create links with given ifindex

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Message-Id: <20120802.162601.2080519313891137444.davem@davemloft.net>
Date:	Thu, 02 Aug 2012 16:26:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	ebiederm@...ssion.com, xemul@...allels.com, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] net: Allow to create links with given ifindex

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 02 Aug 2012 12:28:30 +0200

> Strange because I see no false sharing on this ifindex location for
> loopback device.

Are you sure netdev->rx_dropped isn't being incremented?  That appears
as if it would land on the same cache line as netdev->ifindex.

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