mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 12:16:20 +00:00
24 lines
804 B
Text
24 lines
804 B
Text
|
|
||
|
|
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.
|