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From: David Miller <davem@davemloft.net>
Subject: Re: Performance regression on kernels 3.10 and newer
Date: Thu, 21 Aug 2014 16:24:06 -0700 (PDT)
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From: Tom Herbert <therbert@google.com>
Date: Thu, 14 Aug 2014 16:25:53 -0700

> I don't know if it's the same problem, but I did post a patch back in
> January that would resolve false sharing of dst->__refcnt and rt_genid
> in the same cacheline. We could revisit that if it helps.

I think that regardless of what happens in the discussion here, you
should repost that patch.