diff options
| -rw-r--r-- | drivers/base/power/runtime.c | 15 | ||||
| -rw-r--r-- | include/linux/pm_runtime.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 457be03b744d..a453090c9449 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -88,6 +88,21 @@ static void __update_runtime_status(struct device *dev, enum rpm_status status) dev->power.runtime_status = status; } +u64 pm_runtime_suspended_time(struct device *dev) +{ + unsigned long flags, time; + + spin_lock_irqsave(&dev->power.lock, flags); + + update_pm_runtime_accounting(dev); + time = dev->power.suspended_jiffies; + + spin_unlock_irqrestore(&dev->power.lock, flags); + + return jiffies_to_nsecs(time); +} +EXPORT_SYMBOL_GPL(pm_runtime_suspended_time); + /** * pm_runtime_deactivate_timer - Deactivate given device's suspend timer. * @dev: Device to handle. diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 54af4eef169f..a370006921c0 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -113,6 +113,8 @@ static inline bool pm_runtime_is_irq_safe(struct device *dev) return dev->power.irq_safe; } +extern u64 pm_runtime_suspended_time(struct device *dev); + #else /* !CONFIG_PM */ static inline bool queue_pm_work(struct work_struct *work) { return false; } |