drivers/cpuidle/Kconfig

   1
   2 config CPU_IDLE
   3         bool "CPU idle PM support"
   4         default ACPI
   5         help
   6           CPU idle is a generic framework for supporting software-controlled
   7           idle processor power management.  It includes modular cross-platform
   8           governors that can be swapped during runtime.
   9
  10           If you're using an ACPI-enabled platform, you should say Y here.
  11
  12 config CPU_IDLE_GOV_LADDER
  13         bool
  14         depends on CPU_IDLE
  15         default y
  16
  17 config CPU_IDLE_GOV_MENU
  18         bool
  19         depends on CPU_IDLE && NO_HZ
  20         default y