netdev - Re: [PATCH v3 7/8] cgroup: Assign subsystem IDs during compile time

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Date:	Tue, 11 Sep 2012 23:15:59 +0200
From:	Daniel Wagner <wagi@...om.org>
To:	Tejun Heo <tj@...nel.org>
CC:	netdev@...r.kernel.org, cgroups@...r.kernel.org,
	Daniel Wagner <daniel.wagner@...-carit.de>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Gao feng <gaofeng@...fujitsu.com>,
	Glauber Costa <glommer@...allels.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Li Zefan <lizefan@...wei.com>,
	Neil Horman <nhorman@...driver.com>
Subject: Re: [PATCH v3 7/8] cgroup: Assign subsystem IDs during compile time

Hi Tejun,

On 09/11/2012 11:04 PM, Tejun Heo wrote:
> Hello, Daniel.
>
> One more thing.
>
> On Tue, Sep 11, 2012 at 06:26:13PM +0200, Daniel Wagner wrote:
>> From: Daniel Wagner <daniel.wagner@...-carit.de>
>>
>> WARNING: With this change it is not possible to load external built
>> controllers anymore.
>>
>> In case where CONFIG_NETPRIO_CGROUP=m and CONFIG_NET_CLS_CGROUP=m is
>> set, the type of the corresponding subsys_id should also be of type
>> enum. Up to now, net_prio_subsys_id and net_cls_subsys_id would be an
>> int in this configuration.
>>
>> With switching the macro definition IS_SUBSYS_ENABLED from IS_BUILTIN
>> to IS_ENABLED, the subsys_id will always be enum for all
>> subsystems. That means we need to remove all the code which assumes
>> that net_prio_subsys_id and net_cls_subsys_id is of type int.
>
> I don't think int or enum is the matter here.  enum is an int.  It's
> whether the ID is allocated statically or dynamically.  Can you please
> update the description using those terms instead?

Sure, no problem.

cheers,
daniel
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