netdev - Re: [PATCH net-next 2.6] myri10ge: DCA update (resubmit)

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Message-Id: <20100929.194901.191389574.davem@davemloft.net>
Date:	Wed, 29 Sep 2010 19:49:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gallatin@...i.com
Cc:	netdev@...r.kernel.org, loic@...i.com
Subject: Re: [PATCH net-next 2.6] myri10ge: DCA update (resubmit)

From: Andrew Gallatin <gallatin@...i.com>
Date: Tue, 28 Sep 2010 14:13:12 -0400

> This patch contains the following DCA improvements to myri10ge:
> 
> 1) Finally move myri10ge to use dca3 API
> 
> 2) Disable PCIe relaxed ordering when enabling DCA on
>     myri10ge.  This provides a performance boost on Nehalem
>     based Xeons
> 
> 3) Make sure to properly initialize NIC's DCA state when it is
> enabled,
>     rather than giving the NIC a bogus tag (0) and waiting for
>     the first received packet to trigger an update.  Not using a
>     real tag can cause hardware exceptions on some motherboards
>     when a CPU socket is empty.
> 
> 3) Always update the cached CPU when our interrupt affinity changes
>     so as to avoid excessive calls to dca3_get_tag()
> 
> Signed-off-by: Andrew Gallatin <gallatin@...i.com>
> Signed-off-by: Loic Prylli <loic@...i.com>

Applied.
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