It is necessary to unload the processor idle handle for
a short period of time to avoid for nasty races --
and we don't want to grab too many locks
so that the idle handler continues to be speedy.

http://bugzilla.kernel.org/show_bug.cgi?id=1958Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.de>
Signed-off-by: Len Brown <len.brown@intel.com>