netdev - Re: [PATCH] net: Statically initialize init_net.dev_base

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Message-ID: <500730FB.4060204@intel.com>
Date:	Wed, 18 Jul 2012 14:56:11 -0700
From:	John Fastabend <john.r.fastabend@...el.com>
To:	David Miller <davem@...emloft.net>
CC:	nhorman@...driver.com, mark.d.rustad@...el.com,
	netdev@...r.kernel.org, gaofeng@...fujitsu.com,
	eric.dumazet@...il.com
Subject: Re: [PATCH] net: Statically initialize init_net.dev_base_head

On 7/18/2012 1:32 PM, David Miller wrote:
> From: John Fastabend <john.r.fastabend@...el.com>
> Date: Wed, 18 Jul 2012 13:31:13 -0700
>
>> On 7/18/2012 1:21 PM, Neil Horman wrote:
>>> On Wed, Jul 18, 2012 at 01:20:10PM -0700, David Miller wrote:
>>>> From: Neil Horman <nhorman@...driver.com>
>>>> Date: Wed, 18 Jul 2012 16:11:49 -0400
>>>>
>>>>> On Wed, Jul 18, 2012 at 12:06:07PM -0700, Mark Rustad wrote:
>>>>>> This change eliminates an initialization-order hazard most
>>>>>> recently seen when netprio_cgroup is built into the kernel.
>>>>>>
>>>>>> With thanks to Eric Dumazet for catching a bug.
>>>>>>
>>>>>> Signed-off-by: Mark Rustad <mark.d.rustad@...el.com>
>>>>    ...
>>>>> I think dave was going to take John Fastabends patch from earlier
>>>>> today, but
>>>>> this works just as well.  Long term I'm going to look into delaying
>>>>> initzlization for cgroups, as it creates a strange initialization
>>>>> state when you
>>>>> have a module_init routine registered.
>>>>
>>>> Neil, any particular preference between John's and Mark's version
>>>> of the fix?
>>>>
>>> I think they're both perfectly good.  If I had to choose I'd say
>>> Marks, just
>>> because its done by initializing data, rather than adding more code to
>>> run every
>>> time we create a cgroup.
>>>
>>> Neil
>>>
>>
>> Fine by me if we take this version instead.
>
> I think that's what I'll do, sorry for all the trouble John :)
>

No problem. For what its worth verified this resolved the netprio
issue on my system as expected.
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