79 lines
2.1 KiB
Plaintext
79 lines
2.1 KiB
Plaintext
|
# 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
|