netdev - Re: [PATCH v0 3/5] cgroup: Protect access to task_cls

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Date:	Fri, 17 Aug 2012 09:55:27 +0200
From:	Daniel Wagner <wagi@...om.org>
To:	Li Zefan <lizefan@...wei.com>
CC:	netdev@...r.kernel.org, cgroups@...r.kernel.org,
	Daniel Wagner <daniel.wagner@...-carit.de>,
	"David S. Miller" <davem@...emloft.net>,
	Gao feng <gaofeng@...fujitsu.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Neil Horman <nhorman@...driver.com>, Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH v0 3/5] cgroup: Protect access to task_cls_classid() when
 built as module

On 17.08.2012 09:35, Li Zefan wrote:
>> +#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
>> +extern struct static_key cgroup_cls_enabled;
>> +#define clscg_enabled static_key_false(&cgroup_cls_enabled)
>> +#endif
>> +
> 
> If it's built-in, clscg_enabled is always true (after we call cgroup_subsys_init at
> boot), so we don't need jump label at all.

Okay. I'll update the patches so that only the module built contain the
jump labels.

daniel

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