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1 | |
2 | Supporting multiple CPU idle levels in kernel |
3 | |
4 | cpuidle |
5 | |
6 | General Information: |
7 | |
8 | Various CPUs today support multiple idle levels that are differentiated |
9 | by varying exit latencies and power consumption during idle. |
10 | cpuidle is a generic in-kernel infrastructure that separates |
11 | idle policy (governor) from idle mechanism (driver) and provides a |
12 | standardized infrastructure to support independent development of |
13 | governors and drivers. |
14 | |
15 | cpuidle resides under drivers/cpuidle. |
16 | |
17 | Boot options: |
18 | "cpuidle_sysfs_switch" |
19 | enables current_governor interface in /sys/devices/system/cpu/cpuidle/, |
20 | which can be used to switch governors at run time. This boot option |
21 | is meant for developer testing only. In normal usage, kernel picks the |
22 | best governor based on governor ratings. |
23 | SEE ALSO: sysfs.txt in this directory. |
24 |
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