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Diffstat (limited to 'Documentation/cpuidle/core.txt')
| -rw-r--r-- | Documentation/cpuidle/core.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/cpuidle/core.txt b/Documentation/cpuidle/core.txt new file mode 100644 index 000000000000..63ecc5dc9d8a --- /dev/null +++ b/Documentation/cpuidle/core.txt @@ -0,0 +1,23 @@ + + 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. |