| What: /sys/firmware/opal/sensor_groups | |
| Date: August 2017 | |
| Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org> | |
| Description: Sensor groups directory for POWER9 powernv servers | |
| Each folder in this directory contains a sensor group | |
| which are classified based on type of the sensor | |
| like power, temperature, frequency, current, etc. They | |
| can also indicate the group of sensors belonging to | |
| different owners like CSM, Profiler, Job-Scheduler | |
| What: /sys/firmware/opal/sensor_groups/<sensor_group_name>/clear | |
| Date: August 2017 | |
| Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org> | |
| Description: Sysfs file to clear the min-max of all the sensors | |
| belonging to the group. | |
| Writing 1 to this file will clear the minimum and | |
| maximum values of all the sensors in the group. | |
| In POWER9, the min-max of a sensor is the historical minimum | |
| and maximum value of the sensor cached by OCC. |