OSPM - power management in OS

Question

1. How does one increase or decrease the frequency scaling factor , or turn off frequecy scaling ?
2. how to turn ON or OFF cpuidle state ?
3. how to switch between tickless and non-tickless ?
4. how to make sense of the data obtained form commands like top , memstat, iostat, netstat etc
5. how to turn ON/OFF power management option ?
6. how to manipulate the cpu governors ?

Answer 1

1. See Documentation/cpu-freq/core.txt in the Linux kernel source tree.
2. See Documentation/cpuidle/core.txt
3. Linux cmdline parameters "nohz=on" or "nohz=off".
4. See #1. In short: sysfs. There's a fair amount of stuff in that directory, actually.