ABI: sysfs-devices-power: document some RPM statistics

Changeset 8d4b9d1bfef1 ("PM / Runtime: Add runtime PM statistics (v3)")
added runtime_active_time and runtime_suspended_time, in order
to allow powertop to identify the amount of time a device is
active/suspended.

Add an ABI description for those.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d5524b966d081c650121c4c496c2f7ab3df524e9.1632750608.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index 1763e64dd152e834de2c47d21fe6e48090886044..84694b8fec8ee253084dd2f74024690772b013df 100644 (file)
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -269,3 +269,17 @@ Description:
                the current runtime PM status of the device, which may be
                "suspended", "suspending", "resuming", "active", "error" (fatal
                error), or "unsupported" (runtime PM is disabled).
+
+What:          /sys/devices/.../power/runtime_active_time
+Date:          Jul 2010
+Contact:       Arjan van de Ven <arjan@linux.intel.com>
+Description:
+               Reports the total time that the device has been active.
+               Used for runtime PM statistics.
+
+What:          /sys/devices/.../power/runtime_suspended_time
+Date:          Jul 2010
+Contact:       Arjan van de Ven <arjan@linux.intel.com>
+Description:
+               Reports total time that the device has been suspended.
+               Used for runtime PM statistics.