linux-kernel - Re: [PATCH 1/2] netdev/fec: fix performance impact from mdio poll operation

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Message-ID: <4BFF5352.8080104@canonical.com>
Date:	Fri, 28 May 2010 13:23:30 +0800
From:	Bryan Wu <bryan.wu@...onical.com>
To:	David Miller <davem@...emloft.net>
CC:	s.hauer@...gutronix.de, gerg@...inux.org,
	amit.kucheria@...onical.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] netdev/fec: fix performance impact from mdio poll
 operation

On 05/16/2010 03:28 PM, David Miller wrote:
> From: Bryan Wu <bryan.wu@...onical.com>
> Date: Fri,  7 May 2010 10:27:18 +0800
> 
>> BugLink: http://bugs.launchpad.net/bugs/546649
>> BugLink: http://bugs.launchpad.net/bugs/457878
>>
>> After introducing phylib supporting, users experienced performace drop. That is
>> because of the mdio polling operation of phylib. Use msleep to replace the busy
>> waiting cpu_relax() and remove the warning message.
>>
>> Signed-off-by: Bryan Wu <bryan.wu@...onical.com>
>> Acked-by: Andy Whitcroft <apw@...onical.com>
> 
> As you've already been told, making these MDIO interfaces fail silently
> is not acceptable.
> 
> Please fix this bug properly and resubmit this patch series.
> 

So sorry for the delay. My board's broken for several weeks. After I got a new,
I will try to fix this and resubmit this patch.

Thanks
-- 
Bryan Wu <bryan.wu@...onical.com>
Kernel Developer    +86.138-1617-6545 Mobile
Ubuntu Kernel Team | Hardware Enablement Team
Canonical Ltd.      www.canonical.com
Ubuntu - Linux for human beings | www.ubuntu.com
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