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)
	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_HALTPOLL
	bool "Haltpoll governor (for virtualized systems)"
	depends on KVM_GUEST || ARM64
	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) || ARM64
	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
