Le jeudi 20 mai 2010 à 15:46 +1000, Herbert Xu a écrit :

quoted text
> +#ifdef CONFIG_NET_CLS_CGROUP
> +static inline u32 task_cls_classid(struct task_struct *p)
> +{
> +	return container_of(task_subsys_state(p, net_cls_subsys_id),
> +			    struct cgroup_cls_state, css).classid;
> +}
> +#else
> +int net_cls_subsys_id = -1;
> +EXPORT_SYMBOL_GPL(net_cls_subsys_id);
> +
> +static inline u32 task_cls_classid(struct task_struct *p)
> +{
> +	int id;
> +	u32 classid;
> +
> +	rcu_read_lock();
> +	id = rcu_dereference(net_cls_subsys_id);
> +	if (id >= 0)
> +		classid = container_of(task_subsys_state(p, id),
> +				       struct cgroup_cls_state, css)->classid;
> +	rcu_read_unlock();
> +
> +	return classid;
> +}
> +#endif

I still dont understand why you introduce this function and not reuse it
in net/sched/cls_cgroup.c

You told me it needs a separate patch, I dont think so.
Just make it non static and EXPORTed



quoted text
> +	rcu_read_lock();
> +	classid = task_cls_state(current)->classid;
> +	rcu_read_unlock();
> +



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