What: /sys/devices/system/ibm_rtl/state Date: Sep 2010 KernelVersion: 2.6.37 Contact: Vernon Mauery Description: The state file allows a means by which to change in and out of Premium Real-Time Mode (PRTM), as well as the ability to query the current state. - 0 => PRTM off - 1 => PRTM enabled Users: The ibm-prtm userspace daemon uses this interface. What: /sys/devices/system/ibm_rtl/version Date: Sep 2010 KernelVersion: 2.6.37 Contact: Vernon Mauery Description: The version file provides a means by which to query the RTL table version that lives in the Extended BIOS Data Area (EBDA). Users: The ibm-prtm userspace daemon uses this interface.