| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 1 | |
| Daniel Lezcano | d6f346f | 2013-05-28 15:51:54 +0000 | [diff] [blame^] | 2 | menuconfig CPU_IDLE |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 3 | bool "CPU idle PM support" |
| Benjamin Herrenschmidt | aa491ad | 2012-02-22 16:04:24 +1100 | [diff] [blame] | 4 | default y if ACPI || PPC_PSERIES |
| Daniel Lezcano | d6f346f | 2013-05-28 15:51:54 +0000 | [diff] [blame^] | 5 | select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE) |
| 6 | select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE) |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 7 | help |
| 8 | CPU idle is a generic framework for supporting software-controlled |
| 9 | idle processor power management. It includes modular cross-platform |
| 10 | governors that can be swapped during runtime. |
| 11 | |
| len.brown@intel.com | 60555e3 | 2007-11-19 22:22:37 -0500 | [diff] [blame] | 12 | If you're using an ACPI-enabled platform, you should say Y here. |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 13 | |
| Daniel Lezcano | d6f346f | 2013-05-28 15:51:54 +0000 | [diff] [blame^] | 14 | if CPU_IDLE |
| 15 | |
| Daniel Lezcano | bf4d1b5 | 2012-10-31 16:44:48 +0000 | [diff] [blame] | 16 | config CPU_IDLE_MULTIPLE_DRIVERS |
| 17 | bool "Support multiple cpuidle drivers" |
| Daniel Lezcano | bf4d1b5 | 2012-10-31 16:44:48 +0000 | [diff] [blame] | 18 | default n |
| 19 | help |
| 20 | Allows the cpuidle framework to use different drivers for each CPU. |
| 21 | This is useful if you have a system with different CPU latencies and |
| 22 | states. If unsure say N. |
| 23 | |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 24 | config CPU_IDLE_GOV_LADDER |
| Daniel Lezcano | d6f346f | 2013-05-28 15:51:54 +0000 | [diff] [blame^] | 25 | bool "Ladder governor (for periodic timer tick)" |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 26 | default y |
| 27 | |
| 28 | config CPU_IDLE_GOV_MENU |
| Daniel Lezcano | d6f346f | 2013-05-28 15:51:54 +0000 | [diff] [blame^] | 29 | bool "Menu governor (for tickless system)" |
| Len Brown | 4f86d3a | 2007-10-03 18:58:00 -0400 | [diff] [blame] | 30 | default y |
| Colin Cross | 4126c01 | 2012-05-07 17:57:41 -0700 | [diff] [blame] | 31 | |
| 32 | config ARCH_NEEDS_CPU_IDLE_COUPLED |
| 33 | def_bool n |
| Rob Herring | be6a98d | 2012-10-12 12:45:34 -0500 | [diff] [blame] | 34 | |
| Rob Herring | be6a98d | 2012-10-12 12:45:34 -0500 | [diff] [blame] | 35 | config CPU_IDLE_CALXEDA |
| 36 | bool "CPU Idle Driver for Calxeda processors" |
| 37 | depends on ARCH_HIGHBANK |
| 38 | help |
| 39 | Select this to enable cpuidle on Calxeda processors. |
| Rob Herring | be6a98d | 2012-10-12 12:45:34 -0500 | [diff] [blame] | 40 | endif |