1#ifdef CONFIG_SCHED_AUTOGROUP
 2
 3struct autogroup {
 4	/*
 5	 * reference doesn't mean how many thread attach to this
 6	 * autogroup now. It just stands for the number of task
 7	 * could use this autogroup.
 8	 */
 9	struct kref		kref;
10	struct task_group	*tg;
11	struct rw_semaphore	lock;
12	unsigned long		id;
13	int			nice;
14};
15
16static inline bool task_group_is_autogroup(struct task_group *tg);
17static inline struct task_group *
18autogroup_task_group(struct task_struct *p, struct task_group *tg);
19
20#else /* !CONFIG_SCHED_AUTOGROUP */
21
22static inline void autogroup_init(struct task_struct *init_task) {  }
23static inline void autogroup_free(struct task_group *tg) { }
24static inline bool task_group_is_autogroup(struct task_group *tg)
25{
26	return 0;
27}
28
29static inline struct task_group *
30autogroup_task_group(struct task_struct *p, struct task_group *tg)
31{
32	return tg;
33}
34
35#ifdef CONFIG_SCHED_DEBUG
36static inline int autogroup_path(struct task_group *tg, char *buf, int buflen)
37{
38	return 0;
39}
40#endif
41
42#endif /* CONFIG_SCHED_AUTOGROUP */