summaryrefslogtreecommitdiff
path: root/drivers/base/power/sysfs.c
diff options
context:
space:
mode:
authorRafael J. Wysocki <rjw@sisk.pl>2012-04-29 22:53:32 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2012-05-01 21:25:49 +0200
commit55850945e872531644f31fefd217d61dd15dcab8 (patch)
tree412ee1338d0b69e4d6e2a5e518e30e6660704921 /drivers/base/power/sysfs.c
parent7483b4a4d9abf9dcf1ffe6e805ead2847ec3264e (diff)
PM / Sleep: Add "prevent autosleep time" statistics to wakeup sources
Android uses one wakelock statistics that is only necessary for opportunistic sleep. Namely, the prevent_suspend_time field accumulates the total time the given wakelock has been locked while "automatic suspend" was enabled. Add an analogous field, prevent_sleep_time, to wakeup sources and make it behave in a similar way. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/power/sysfs.c')
-rw-r--r--drivers/base/power/sysfs.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 13e40b9021b9..48be2ad4dd2c 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -417,6 +417,27 @@ static ssize_t wakeup_last_time_show(struct device *dev,
}
static DEVICE_ATTR(wakeup_last_time_ms, 0444, wakeup_last_time_show, NULL);
+
+#ifdef CONFIG_PM_AUTOSLEEP
+static ssize_t wakeup_prevent_sleep_time_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ s64 msec = 0;
+ bool enabled = false;
+
+ spin_lock_irq(&dev->power.lock);
+ if (dev->power.wakeup) {
+ msec = ktime_to_ms(dev->power.wakeup->prevent_sleep_time);
+ enabled = true;
+ }
+ spin_unlock_irq(&dev->power.lock);
+ return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
+}
+
+static DEVICE_ATTR(wakeup_prevent_sleep_time_ms, 0444,
+ wakeup_prevent_sleep_time_show, NULL);
+#endif /* CONFIG_PM_AUTOSLEEP */
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_PM_ADVANCED_DEBUG
@@ -511,6 +532,9 @@ static struct attribute *wakeup_attrs[] = {
&dev_attr_wakeup_total_time_ms.attr,
&dev_attr_wakeup_max_time_ms.attr,
&dev_attr_wakeup_last_time_ms.attr,
+#ifdef CONFIG_PM_AUTOSLEEP
+ &dev_attr_wakeup_prevent_sleep_time_ms.attr,
+#endif
#endif
NULL,
};