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menuconfig 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 "Support multiple cpuidle drivers"
default n
help
Allows the cpuidle framework to use different drivers for each CPU.
This is useful if you have a system with different CPU latencies and
states. If unsure say N.
config CPU_IDLE_GOV_LADDER
bool "Ladder governor (for periodic timer tick)"
default y
config CPU_IDLE_GOV_MENU
bool "Menu governor (for tickless system)"
default y
config CPU_IDLE_GOV_HALTPOLL
bool "Haltpoll governor (for virtualized systems)"
depends on X86 && 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 CPU_IDLE_CALXEDA
bool "CPU Idle Driver for Calxeda processors"
depends on ARCH_HIGHBANK
help
Select this to enable cpuidle on Calxeda processors.
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
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