xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'pm-sleep'

Browse Source 
* pm-sleep:
  PM / Sleep: User space wakeup sources garbage collector Kconfig option
  PM / Sleep: Make the limit of user space wakeup sources configurable
  PM / Documentation: suspend-and-cpuhotplug.txt: Fix typo
  PM / Sleep: Fix a mistake in a conditional in autosleep_store()
  epoll: Add a flag, EPOLLWAKEUP, to prevent suspend while epoll events are ready
  PM / Sleep: Add user space interface for manipulating wakeup sources, v3
  PM / Sleep: Add "prevent autosleep time" statistics to wakeup sources
  PM / Sleep: Implement opportunistic sleep, v2
  PM / Sleep: Add wakeup_source_activate and wakeup_source_deactivate tracepoints
  PM / Sleep: Change wakeup source statistics to follow Android
  PM / Sleep: Use wait queue to signal "no wakeup events in progress"
  PM / Sleep: Look for wakeup events in later stages of device suspend
  PM / Hibernate: Hibernate/thaw fixes/improvements
This commit is contained in:
Rafael J. Wysocki
2012-05-11 21:15:09 +02:00
parent e6d18093ea 4e585d25e1
commit 351520a9eb
19 changed files with 1050 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/capability.h
View File

@@ -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)

12
include/linux/eventpoll.h
View File

@@ -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)

15
include/linux/pm_wakeup.h
View File

@@ -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

14
include/linux/suspend.h
View File

@@ -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