1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _KERNEL_SCHED_AUTOGROUP_H
3 #define _KERNEL_SCHED_AUTOGROUP_H
5 #ifdef CONFIG_SCHED_AUTOGROUP
9 * Reference doesn't mean how many threads attach to this
10 * autogroup now. It just stands for the number of tasks
11 * which could use this autogroup.
14 struct task_group *tg;
15 struct rw_semaphore lock;
20 extern void autogroup_init(struct task_struct *init_task);
21 extern void autogroup_free(struct task_group *tg);
23 static inline bool task_group_is_autogroup(struct task_group *tg)
25 return !!tg->autogroup;
28 extern bool task_wants_autogroup(struct task_struct *p, struct task_group *tg);
30 static inline struct task_group *
31 autogroup_task_group(struct task_struct *p, struct task_group *tg)
33 extern unsigned int sysctl_sched_autogroup_enabled;
34 int enabled = READ_ONCE(sysctl_sched_autogroup_enabled);
36 if (enabled && task_wants_autogroup(p, tg))
37 return p->signal->autogroup->tg;
42 extern int autogroup_path(struct task_group *tg, char *buf, int buflen);
44 #else /* !CONFIG_SCHED_AUTOGROUP */
46 static inline void autogroup_init(struct task_struct *init_task) { }
47 static inline void autogroup_free(struct task_group *tg) { }
48 static inline bool task_group_is_autogroup(struct task_group *tg)
53 static inline struct task_group *
54 autogroup_task_group(struct task_struct *p, struct task_group *tg)
59 static inline int autogroup_path(struct task_group *tg, char *buf, int buflen)
64 #endif /* CONFIG_SCHED_AUTOGROUP */
66 #endif /* _KERNEL_SCHED_AUTOGROUP_H */