| What: /sys/firmware/opal/sensor_groups |
| Date: August 2017 |
| Contact: Linux for PowerPC mailing list <linuxppc-dev@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@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. |
