projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ec8f24b7 | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| b98e01ad | 2 | menu "CPU Idle" |
| 4f86d3a8 | 3 | |
| b98e01ad | 4 | config CPU_IDLE |
| 4f86d3a8 | 5 | bool "CPU idle PM support" |
| aa491ad3 | 6 | default y if ACPI || PPC_PSERIES |
| d6f346f2 | 7 | select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE) |
| b26bf6ab | 8 | select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE) && !CPU_IDLE_GOV_TEO |
| 4f86d3a8 LB |
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 | ||
| 60555e37 | 14 | If you're using an ACPI-enabled platform, you should say Y here. |
| 4f86d3a8 | 15 | |
| d6f346f2 DL |
16 | if CPU_IDLE |
| 17 | ||
| bf4d1b5d | 18 | config CPU_IDLE_MULTIPLE_DRIVERS |
| 656b4e63 | 19 | bool |
| bf4d1b5d | 20 | |
| 4f86d3a8 | 21 | config CPU_IDLE_GOV_LADDER |
| d6f346f2 | 22 | bool "Ladder governor (for periodic timer tick)" |
| 4f86d3a8 LB |
23 | |
| 24 | config CPU_IDLE_GOV_MENU | |
| d6f346f2 | 25 | bool "Menu governor (for tickless system)" |
| 4126c019 | 26 | |
| b26bf6ab RW |
27 | config 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 | ||
| 2cffe9f6 MT |
36 | config CPU_IDLE_GOV_HALTPOLL |
| 37 | bool "Haltpoll governor (for virtualized systems)" | |
| 38 | depends on KVM_GUEST | |
| 39 | help | |
| 40 | This governor implements haltpoll idle state selection, to be | |
| 41 | used in conjunction with the haltpoll cpuidle driver, allowing | |
| 42 | for polling for a certain amount of time before entering idle | |
| 43 | state. | |
| 44 | ||
| 45 | Some virtualized workloads benefit from using it. | |
| 46 | ||
| 9f14da34 LP |
47 | config DT_IDLE_STATES |
| 48 | bool | |
| 49 | ||
| b98e01ad | 50 | menu "ARM CPU Idle Drivers" |
| 0e087044 | 51 | depends on ARM || ARM64 |
| b98e01ad S |
52 | source "drivers/cpuidle/Kconfig.arm" |
| 53 | endmenu | |
| bd2a337a | 54 | |
| d0508944 PB |
55 | menu "MIPS CPU Idle Drivers" |
| 56 | depends on MIPS | |
| 57 | source "drivers/cpuidle/Kconfig.mips" | |
| 58 | endmenu | |
| 59 | ||
| 962e7bd4 DD |
60 | menu "POWERPC CPU Idle Drivers" |
| 61 | depends on PPC | |
| 62 | source "drivers/cpuidle/Kconfig.powerpc" | |
| 63 | endmenu | |
| 64 | ||
| fa86ee90 | 65 | config HALTPOLL_CPUIDLE |
| 656b4e63 KK |
66 | tristate "Halt poll cpuidle driver" |
| 67 | depends on X86 && KVM_GUEST | |
| 68 | default y | |
| 69 | help | |
| 70 | This option enables halt poll cpuidle driver, which allows to poll | |
| 71 | before halting in the guest (more efficient than polling in the | |
| 72 | host via halt_poll_ns for some scenarios). | |
| fa86ee90 | 73 | |
| be6a98d3 | 74 | endif |
| b39b0981 DL |
75 | |
| 76 | config ARCH_NEEDS_CPU_IDLE_COUPLED | |
| 77 | def_bool n | |
| b98e01ad | 78 | endmenu |