projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5091faa4 MG |
1 | #ifdef CONFIG_SCHED_AUTOGROUP |
| 2 | ||
| 029632fb PZ |
3 | #include <linux/kref.h> |
| 4 | #include <linux/rwsem.h> | |
| 5 | ||
| 5091faa4 | 6 | struct autogroup { |
| c1ad41f1 IM |
7 | /* |
| 8 | * reference doesn't mean how many thread attach to this | |
| 9 | * autogroup now. It just stands for the number of task | |
| 10 | * could use this autogroup. | |
| 11 | */ | |
| 5091faa4 MG |
12 | struct kref kref; |
| 13 | struct task_group *tg; | |
| 14 | struct rw_semaphore lock; | |
| 15 | unsigned long id; | |
| 16 | int nice; | |
| 17 | }; | |
| 18 | ||
| 029632fb PZ |
19 | extern void autogroup_init(struct task_struct *init_task); |
| 20 | extern void autogroup_free(struct task_group *tg); | |
| 21 | ||
| 22 | static inline bool task_group_is_autogroup(struct task_group *tg) | |
| 23 | { | |
| 24 | return !!tg->autogroup; | |
| 25 | } | |
| 26 | ||
| 27 | extern bool task_wants_autogroup(struct task_struct *p, struct task_group *tg); | |
| 28 | ||
| 5091faa4 | 29 | static inline struct task_group * |
| 029632fb PZ |
30 | autogroup_task_group(struct task_struct *p, struct task_group *tg) |
| 31 | { | |
| c1ad41f1 IM |
32 | int enabled = ACCESS_ONCE(sysctl_sched_autogroup_enabled); |
| 33 | ||
| 34 | if (enabled && task_wants_autogroup(p, tg)) | |
| 029632fb PZ |
35 | return p->signal->autogroup->tg; |
| 36 | ||
| 37 | return tg; | |
| 38 | } | |
| 39 | ||
| 40 | extern int autogroup_path(struct task_group *tg, char *buf, int buflen); | |
| 5091faa4 MG |
41 | |
| 42 | #else /* !CONFIG_SCHED_AUTOGROUP */ | |
| 43 | ||
| 44 | static inline void autogroup_init(struct task_struct *init_task) { } | |
| 45 | static inline void autogroup_free(struct task_group *tg) { } | |
| f4493771 MG |
46 | static inline bool task_group_is_autogroup(struct task_group *tg) |
| 47 | { | |
| 48 | return 0; | |
| 49 | } | |
| 5091faa4 MG |
50 | |
| 51 | static inline struct task_group * | |
| 52 | autogroup_task_group(struct task_struct *p, struct task_group *tg) | |
| 53 | { | |
| 54 | return tg; | |
| 55 | } | |
| 56 | ||
| 57 | #ifdef CONFIG_SCHED_DEBUG | |
| 58 | static inline int autogroup_path(struct task_group *tg, char *buf, int buflen) | |
| 59 | { | |
| 60 | return 0; | |
| 61 | } | |
| 62 | #endif | |
| 63 | ||
| 64 | #endif /* CONFIG_SCHED_AUTOGROUP */ |