tree 910e9b4044bee76568c9eaeff70aac2fbc2385ab
parent b419148e567728f6af0c3b01965c1cc141e3e13a
author Zhao Yakui <yakui.zhao@intel.com> 1255656041 +0800
committer Len Brown <len.brown@intel.com> 1257490687 -0500

ACPI: Notify the _PPC evaluation status to the platform

According to the ACPI spec(section 8.4.4.3) OSPM should convey the _PPC
evaluations status to the platform if there exists the _OST object.
The _OST contains two arguments:
	The first is the PERFORMANCE notificatin event.
	The second is the status of _PPC object.
OSPM will convey the _PPC evaluation status to the platform.
Of course when the module parameter of "ignore_ppc" is added, OSPM won't
evaluate the _PPC object. But it will call the _OST object.

At the same time the _OST object will be evaluated only when the PERFORMANCE
notification event is received.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>