[mirror_ubuntu-artful-kernel.git] / kernel / sched_autogroup.h

#ifdef CONFIG_SCHED_AUTOGROUP

struct autogroup {
	/*
	 * reference doesn't mean how many thread attach to this
	 * autogroup now. It just stands for the number of task
	 * could use this autogroup.
	 */
	struct kref		kref;
	struct task_group	*tg;
	struct rw_semaphore	lock;
	unsigned long		id;
	int			nice;
};

static inline struct task_group *
autogroup_task_group(struct task_struct *p, struct task_group *tg);

#else /* !CONFIG_SCHED_AUTOGROUP */

static inline void autogroup_init(struct task_struct *init_task) {  }
static inline void autogroup_free(struct task_group *tg) { }
static inline bool task_group_is_autogroup(struct task_group *tg)
{
	return 0;
}

static inline struct task_group *
autogroup_task_group(struct task_struct *p, struct task_group *tg)
{
	return tg;
}

#ifdef CONFIG_SCHED_DEBUG
static inline int autogroup_path(struct task_group *tg, char *buf, int buflen)
{
	return 0;
}
#endif

#endif /* CONFIG_SCHED_AUTOGROUP */
Commit	Line	Data
5091faa4 MG	1	#ifdef CONFIG_SCHED_AUTOGROUP
	2
	3	struct autogroup {
800d4d30 YZ	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	*/
5091faa4 MG	9	struct kref kref;
	10	struct task_group *tg;
	11	struct rw_semaphore lock;
	12	unsigned long id;
	13	int nice;
	14	};
	15
	16	static inline struct task_group *
	17	autogroup_task_group(struct task_struct p, struct task_group tg);
	18
	19	#else /* !CONFIG_SCHED_AUTOGROUP */
	20
	21	static inline void autogroup_init(struct task_struct *init_task) { }
	22	static inline void autogroup_free(struct task_group *tg) { }
f4493771 MG	23	static inline bool task_group_is_autogroup(struct task_group *tg)
	24	{
	25	return 0;
	26	}
5091faa4 MG	27
	28	static inline struct task_group *
	29	autogroup_task_group(struct task_struct p, struct task_group tg)
	30	{
	31	return tg;
	32	}
	33
	34	#ifdef CONFIG_SCHED_DEBUG
	35	static inline int autogroup_path(struct task_group tg, char buf, int buflen)
	36	{
	37	return 0;
	38	}
	39	#endif
	40
	41	#endif /* CONFIG_SCHED_AUTOGROUP */