| |
| Supporting multiple CPU idle levels in kernel |
| |
| cpuidle |
| |
| General Information: |
| |
| Various CPUs today support multiple idle levels that are differentiated |
| by varying exit latencies and power consumption during idle. |
| cpuidle is a generic in-kernel infrastructure that separates |
| idle policy (governor) from idle mechanism (driver) and provides a |
| standardized infrastructure to support independent development of |
| governors and drivers. |
| |
| cpuidle resides under drivers/cpuidle. |
| |
| Boot options: |
| "cpuidle_sysfs_switch" |
| enables current_governor interface in /sys/devices/system/cpu/cpuidle/, |
| which can be used to switch governors at run time. This boot option |
| is meant for developer testing only. In normal usage, kernel picks the |
| best governor based on governor ratings. |
| SEE ALSO: sysfs.txt in this directory. |
