# SPDX-License-Identifier: GPL-2.0-only

  menu "CPU Idle"

  config CPU_IDLE

  	bool "CPU idle PM support"

  	default y if ACPI || PPC_PSERIES

  	select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE)

  	select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE) && !CPU_IDLE_GOV_TEO

  	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.

  if CPU_IDLE

  config CPU_IDLE_MULTIPLE_DRIVERS

  	bool

  config CPU_IDLE_GOV_LADDER

  	bool "Ladder governor (for periodic timer tick)"

  
  config CPU_IDLE_GOV_MENU

  	bool "Menu governor (for tickless system)"

  config CPU_IDLE_GOV_TEO
  	bool "Timer events oriented (TEO) governor (for tickless systems)"
  	help
  	  This governor implements a simplified idle state selection method
  	  focused on timer events and does not do any interactivity boosting.
  
  	  Some workloads benefit from using it and it generally should be safe
  	  to use.  Say Y here if you are not happy with the alternatives.

  config CPU_IDLE_GOV_HALTPOLL
  	bool "Haltpoll governor (for virtualized systems)"
  	depends on KVM_GUEST
  	help
  	  This governor implements haltpoll idle state selection, to be
  	  used in conjunction with the haltpoll cpuidle driver, allowing
  	  for polling for a certain amount of time before entering idle
  	  state.
  
  	  Some virtualized workloads benefit from using it.

  config DT_IDLE_STATES
  	bool

  menu "ARM CPU Idle Drivers"

  depends on ARM || ARM64

  source "drivers/cpuidle/Kconfig.arm"
  endmenu

  menu "MIPS CPU Idle Drivers"
  depends on MIPS
  source "drivers/cpuidle/Kconfig.mips"
  endmenu

  menu "POWERPC CPU Idle Drivers"
  depends on PPC
  source "drivers/cpuidle/Kconfig.powerpc"
  endmenu

  config HALTPOLL_CPUIDLE

  	tristate "Halt poll cpuidle driver"
  	depends on X86 && KVM_GUEST
  	default y
  	help
  	 This option enables halt poll cpuidle driver, which allows to poll
  	 before halting in the guest (more efficient than polling in the
  	 host via halt_poll_ns for some scenarios).

  endif

  
  config ARCH_NEEDS_CPU_IDLE_COUPLED
  	def_bool n

  endmenu