diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/capability.h | 5 | ||||
| -rw-r--r-- | include/linux/eventpoll.h | 12 | ||||
| -rw-r--r-- | include/linux/pm_wakeup.h | 15 | ||||
| -rw-r--r-- | include/linux/suspend.h | 14 |
4 files changed, 40 insertions, 6 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h index 12d52dedb22..c398cff3dab 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -360,8 +360,11 @@ struct cpu_vfs_cap_data { #define CAP_WAKE_ALARM 35 +/* Allow preventing system suspends while epoll events are pending */ -#define CAP_LAST_CAP CAP_WAKE_ALARM +#define CAP_EPOLLWAKEUP 36 + +#define CAP_LAST_CAP CAP_EPOLLWAKEUP #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h index 657ab55beda..6f8be328770 100644 --- a/include/linux/eventpoll.h +++ b/include/linux/eventpoll.h @@ -26,6 +26,18 @@ #define EPOLL_CTL_DEL 2 #define EPOLL_CTL_MOD 3 +/* + * Request the handling of system wakeup events so as to prevent system suspends + * from happening while those events are being processed. + * + * Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be + * re-allowed until epoll_wait is called again after consuming the wakeup + * event(s). + * + * Requires CAP_EPOLLWAKEUP + */ +#define EPOLLWAKEUP (1 << 29) + /* Set the One Shot behaviour for the target file descriptor */ #define EPOLLONESHOT (1 << 30) diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index d9f05113e5f..569781faa50 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -33,12 +33,15 @@ * * @total_time: Total time this wakeup source has been active. * @max_time: Maximum time this wakeup source has been continuously active. - * @last_time: Monotonic clock when the wakeup source's was activated last time. + * @last_time: Monotonic clock when the wakeup source's was touched last time. + * @prevent_sleep_time: Total time this source has been preventing autosleep. * @event_count: Number of signaled wakeup events. * @active_count: Number of times the wakeup sorce was activated. * @relax_count: Number of times the wakeup sorce was deactivated. - * @hit_count: Number of times the wakeup sorce might abort system suspend. + * @expire_count: Number of times the wakeup source's timeout has expired. + * @wakeup_count: Number of times the wakeup source might abort suspend. * @active: Status of the wakeup source. + * @has_timeout: The wakeup source has been activated with a timeout. */ struct wakeup_source { const char *name; @@ -49,11 +52,15 @@ struct wakeup_source { ktime_t total_time; ktime_t max_time; ktime_t last_time; + ktime_t start_prevent_time; + ktime_t prevent_sleep_time; unsigned long event_count; unsigned long active_count; unsigned long relax_count; - unsigned long hit_count; - unsigned int active:1; + unsigned long expire_count; + unsigned long wakeup_count; + bool active:1; + bool autosleep_enabled:1; }; #ifdef CONFIG_PM_SLEEP diff --git a/include/linux/suspend.h b/include/linux/suspend.h index ac1c114c499..cd83059fb59 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -356,8 +356,9 @@ extern int unregister_pm_notifier(struct notifier_block *nb); extern bool events_check_enabled; extern bool pm_wakeup_pending(void); -extern bool pm_get_wakeup_count(unsigned int *count); +extern bool pm_get_wakeup_count(unsigned int *count, bool block); extern bool pm_save_wakeup_count(unsigned int count); +extern void pm_wakep_autosleep_enabled(bool set); static inline void lock_system_sleep(void) { @@ -407,6 +408,17 @@ static inline void unlock_system_sleep(void) {} #endif /* !CONFIG_PM_SLEEP */ +#ifdef CONFIG_PM_AUTOSLEEP + +/* kernel/power/autosleep.c */ +void queue_up_suspend_work(void); + +#else /* !CONFIG_PM_AUTOSLEEP */ + +static inline void queue_up_suspend_work(void) {} + +#endif /* !CONFIG_PM_AUTOSLEEP */ + #ifdef CONFIG_ARCH_SAVE_PAGE_KEYS /* * The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture |