-config PPC_RTAS
- bool "Support for RTAS (RunTime Abstraction Services) in /proc"
- depends on PPC_OF && PROC_FS
- ---help---
- When you use this option, you will be able to use RTAS from
- userspace.
-
- RTAS stands for RunTime Abstraction Services and should
- provide a portable way to access and set system information. This is
- commonly used on RS/6000 (pSeries) computers.
-
- You can access RTAS via the special proc file system entry rtas.
- Don't confuse this rtas entry with the one in /proc/device-tree/rtas
- which is readonly.
-
- If you don't know if you can use RTAS look into
- /proc/device-tree/rtas. If there are some entries, it is very likely
- that you will be able to use RTAS.
-
- You can do cool things with rtas. To print out information about
- various sensors in the system, just do a
-
- $ cat /proc/rtas/sensors
-
- or if you power off your machine at night but want it running when
- you enter your office at 7:45 am, do a
-
- # date -d 'tomorrow 7:30' +%s > /proc/rtas/poweron
-
- and shutdown.
-
- If unsure, say Y.
-