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path: root/drivers/base/power/sysfs.c
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Diffstat (limited to 'drivers/base/power/sysfs.c')
-rw-r--r--drivers/base/power/sysfs.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 1eca50c8e7c..e56b4388fe6 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -6,6 +6,7 @@
#include <linux/string.h>
#include <linux/pm_runtime.h>
#include <asm/atomic.h>
+#include <linux/jiffies.h>
#include "power.h"
/*
@@ -111,6 +112,33 @@ static ssize_t control_store(struct device * dev, struct device_attribute *attr,
static DEVICE_ATTR(control, 0644, control_show, control_store);
+static ssize_t rtpm_active_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ spin_lock_irq(&dev->power.lock);
+ update_pm_runtime_accounting(dev);
+ ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies));
+ spin_unlock_irq(&dev->power.lock);
+ return ret;
+}
+
+static DEVICE_ATTR(runtime_active_time, 0444, rtpm_active_time_show, NULL);
+
+static ssize_t rtpm_suspended_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ spin_lock_irq(&dev->power.lock);
+ update_pm_runtime_accounting(dev);
+ ret = sprintf(buf, "%i\n",
+ jiffies_to_msecs(dev->power.suspended_jiffies));
+ spin_unlock_irq(&dev->power.lock);
+ return ret;
+}
+
+static DEVICE_ATTR(runtime_suspended_time, 0444, rtpm_suspended_time_show, NULL);
+
static ssize_t rtpm_status_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -254,6 +282,8 @@ static struct attribute * power_attrs[] = {
#ifdef CONFIG_PM_RUNTIME
&dev_attr_control.attr,
&dev_attr_runtime_status.attr,
+ &dev_attr_runtime_suspended_time.attr,
+ &dev_attr_runtime_active_time.attr,
#endif
&dev_attr_wakeup.attr,
#ifdef CONFIG_PM_SLEEP