diff options
Diffstat (limited to 'include/linux/freezer.h')
| -rw-r--r-- | include/linux/freezer.h | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/include/linux/freezer.h b/include/linux/freezer.h index 4631086f5060..efded00ad08c 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -1,8 +1,11 @@ /* Freezer declarations */ +#ifndef FREEZER_H_INCLUDED +#define FREEZER_H_INCLUDED + #include <linux/sched.h> -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP /* * Check if a process has been frozen */ @@ -22,7 +25,7 @@ static inline int freezing(struct task_struct *p) /* * Request that a process be frozen */ -static inline void freeze(struct task_struct *p) +static inline void set_freeze_flag(struct task_struct *p) { set_tsk_thread_flag(p, TIF_FREEZE); } @@ -30,7 +33,7 @@ static inline void freeze(struct task_struct *p) /* * Sometimes we may need to cancel the previous 'freeze' request */ -static inline void do_not_freeze(struct task_struct *p) +static inline void clear_freeze_flag(struct task_struct *p) { clear_tsk_thread_flag(p, TIF_FREEZE); } @@ -53,7 +56,7 @@ static inline int thaw_process(struct task_struct *p) wake_up_process(p); return 1; } - clear_tsk_thread_flag(p, TIF_FREEZE); + clear_freeze_flag(p); task_unlock(p); return 0; } @@ -115,10 +118,19 @@ static inline int freezer_should_skip(struct task_struct *p) return !!(p->flags & PF_FREEZER_SKIP); } -#else +/* + * Tell the freezer that the current task should be frozen by it + */ +static inline void set_freezable(void) +{ + current->flags &= ~PF_NOFREEZE; +} + +#else /* !CONFIG_PM_SLEEP */ static inline int frozen(struct task_struct *p) { return 0; } static inline int freezing(struct task_struct *p) { return 0; } -static inline void freeze(struct task_struct *p) { BUG(); } +static inline void set_freeze_flag(struct task_struct *p) {} +static inline void clear_freeze_flag(struct task_struct *p) {} static inline int thaw_process(struct task_struct *p) { return 1; } static inline void refrigerator(void) {} @@ -130,4 +142,7 @@ static inline int try_to_freeze(void) { return 0; } static inline void freezer_do_not_count(void) {} static inline void freezer_count(void) {} static inline int freezer_should_skip(struct task_struct *p) { return 0; } -#endif +static inline void set_freezable(void) {} +#endif /* !CONFIG_PM_SLEEP */ + +#endif /* FREEZER_H_INCLUDED */ |