projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 5091faa4 MG |
2 | #ifdef CONFIG_SCHED_AUTOGROUP |
| 3 | ||
| 4 | struct autogroup { | |
| c1ad41f1 | 5 | /* |
| 97fb7a0a IM |
6 | * Reference doesn't mean how many threads attach to this |
| 7 | * autogroup now. It just stands for the number of tasks | |
| 8 | * which could use this autogroup. | |
| c1ad41f1 | 9 | */ |
| 5091faa4 MG |
10 | struct kref kref; |
| 11 | struct task_group *tg; | |
| 12 | struct rw_semaphore lock; | |
| 13 | unsigned long id; | |
| 14 | int nice; | |
| 15 | }; | |
| 16 | ||
| 029632fb PZ |
17 | extern void autogroup_init(struct task_struct *init_task); |
| 18 | extern void autogroup_free(struct task_group *tg); | |
| 19 | ||
| 20 | static inline bool task_group_is_autogroup(struct task_group *tg) | |
| 21 | { | |
| 22 | return !!tg->autogroup; | |
| 23 | } | |
| 24 | ||
| 25 | extern bool task_wants_autogroup(struct task_struct *p, struct task_group *tg); | |
| 26 | ||
| 5091faa4 | 27 | static inline struct task_group * |
| 029632fb PZ |
28 | autogroup_task_group(struct task_struct *p, struct task_group *tg) |
| 29 | { | |
| 316c1608 | 30 | int enabled = READ_ONCE(sysctl_sched_autogroup_enabled); |
| c1ad41f1 IM |
31 | |
| 32 | if (enabled && task_wants_autogroup(p, tg)) | |
| 029632fb PZ |
33 | return p->signal->autogroup->tg; |
| 34 | ||
| 35 | return tg; | |
| 36 | } | |
| 37 | ||
| 38 | extern int autogroup_path(struct task_group *tg, char *buf, int buflen); | |
| 5091faa4 MG |
39 | |
| 40 | #else /* !CONFIG_SCHED_AUTOGROUP */ | |
| 41 | ||
| 42 | static inline void autogroup_init(struct task_struct *init_task) { } | |
| 43 | static inline void autogroup_free(struct task_group *tg) { } | |
| f4493771 MG |
44 | static inline bool task_group_is_autogroup(struct task_group *tg) |
| 45 | { | |
| 46 | return 0; | |
| 47 | } | |
| 5091faa4 MG |
48 | |
| 49 | static inline struct task_group * | |
| 50 | autogroup_task_group(struct task_struct *p, struct task_group *tg) | |
| 51 | { | |
| 52 | return tg; | |
| 53 | } | |
| 54 | ||
| 5091faa4 MG |
55 | static inline int autogroup_path(struct task_group *tg, char *buf, int buflen) |
| 56 | { | |
| 57 | return 0; | |
| 58 | } | |
| 5091faa4 MG |
59 | |
| 60 | #endif /* CONFIG_SCHED_AUTOGROUP */ |