linux/Documentation/ABI/testing/sysfs-devices-power_resources_D0, branch masterLinux Kernel (branches are rebased on master from time to time)https://sre.ring0.de/linux/atom?h=master2013-01-25T20:51:32ZACPI / PM: Expose lists of device power resources to user space2013-01-25T20:51:32ZRafael J. Wysockirafael.j.wysocki@intel.com2013-01-25T20:51:32Zurn:sha1:18a387099b3e3fd901cc706f708b163aa45347b6
Since ACPI power resources are going to be used more extensively on
new hardware platforms, it is necessary to allow user space (powertop
in particular) to look at the lists of power resources corresponding
to different power states of devices for diagnostics and control
purposes.
For this reason, for each power state of an ACPI device node using
power resources create a special attribute group under the device
node's directory in sysfs containing links to sysfs directories
representing the power resources in that list. The names of the
new attribute groups are "power_resources_<state>", where <state>
is the state name i.e. "D0", "D1", "D2", or "D3hot".
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>