diff options
Diffstat (limited to 'include/linux/freezer.h')
| -rw-r--r-- | include/linux/freezer.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/freezer.h b/include/linux/freezer.h index c1ee2833655e..30f06c220467 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -105,6 +105,29 @@ static inline int freezer_should_skip(struct task_struct *p) } /* + * These macros are intended to be used whenever you want allow a task that's + * sleeping in TASK_UNINTERRUPTIBLE or TASK_KILLABLE state to be frozen. Note + * that neither return any clear indication of whether a freeze event happened + * while in this function. + */ + +/* Like schedule(), but should not block the freezer. */ +#define freezable_schedule() \ +({ \ + freezer_do_not_count(); \ + schedule(); \ + freezer_count(); \ +}) + +/* Like schedule_timeout_killable(), but should not block the freezer. */ +#define freezable_schedule_timeout_killable(timeout) \ +({ \ + freezer_do_not_count(); \ + schedule_timeout_killable(timeout); \ + freezer_count(); \ +}) + +/* * Freezer-friendly wrappers around wait_event_interruptible(), * wait_event_killable() and wait_event_interruptible_timeout(), originally * defined in <linux/wait.h> @@ -163,6 +186,11 @@ static inline void freezer_count(void) {} static inline int freezer_should_skip(struct task_struct *p) { return 0; } static inline void set_freezable(void) {} +#define freezable_schedule() schedule() + +#define freezable_schedule_timeout_killable(timeout) \ + schedule_timeout_killable(timeout) + #define wait_event_freezable(wq, condition) \ wait_event_interruptible(wq, condition) |