config CPU_IDLE
  	bool "CPU idle PM support"

  	default ACPI

  	help
  	  CPU idle is a generic framework for supporting software-controlled
  	  idle processor power management.  It includes modular cross-platform
  	  governors that can be swapped during runtime.

  	  If you're using an ACPI-enabled platform, you should say Y here.

  
  config CPU_IDLE_GOV_LADDER
  	bool
  	depends on CPU_IDLE
  	default y
  
  config CPU_IDLE_GOV_MENU
  	bool
  	depends on CPU_IDLE && NO_HZ
  	default y