1# SPDX-License-Identifier: GPL-2.0-only 2menu "CPU Idle" 3 4config CPU_IDLE 5 bool "CPU idle PM support" 6 default y if ACPI || PPC_PSERIES 7 select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE) 8 select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE) && !CPU_IDLE_GOV_TEO 9 help 10 CPU idle is a generic framework for supporting software-controlled 11 idle processor power management. It includes modular cross-platform 12 governors that can be swapped during runtime. 13 14 If you're using an ACPI-enabled platform, you should say Y here. 15 16if CPU_IDLE 17 18config CPU_IDLE_MULTIPLE_DRIVERS 19 bool 20 21config CPU_IDLE_GOV_LADDER 22 bool "Ladder governor (for periodic timer tick)" 23 24config CPU_IDLE_GOV_MENU 25 bool "Menu governor (for tickless system)" 26 27config CPU_IDLE_GOV_TEO 28 bool "Timer events oriented (TEO) governor (for tickless systems)" 29 help 30 This governor implements a simplified idle state selection method 31 focused on timer events and does not do any interactivity boosting. 32 33 Some workloads benefit from using it and it generally should be safe 34 to use. Say Y here if you are not happy with the alternatives. 35 36config DT_IDLE_STATES 37 bool 38 39menu "ARM CPU Idle Drivers" 40depends on ARM || ARM64 41source "drivers/cpuidle/Kconfig.arm" 42endmenu 43 44menu "MIPS CPU Idle Drivers" 45depends on MIPS 46source "drivers/cpuidle/Kconfig.mips" 47endmenu 48 49menu "POWERPC CPU Idle Drivers" 50depends on PPC 51source "drivers/cpuidle/Kconfig.powerpc" 52endmenu 53 54endif 55 56config ARCH_NEEDS_CPU_IDLE_COUPLED 57 def_bool n 58endmenu 59