The firmware on the POWER9 machines provides an energy sensor. This
sensor measures the energy on/in/at the chip. I'm not sure what that
actually means. But it is different from the energy content of a
battery which is measured in Watthours.
Should I add this? Or should I just skip these sensors?
Index: sbin/sysctl/sysctl.c
===================================================================
RCS file: /cvs/src/sbin/sysctl/sysctl.c,v
retrieving revision 1.251
diff -u -p -r1.251 sysctl.c
--- sbin/sysctl/sysctl.c 29 May 2020 04:42:23 -0000 1.251
+++ sbin/sysctl/sysctl.c 14 Jul 2020 17:30:43 -0000
@@ -2759,6 +2759,9 @@ print_sensor(struct sensor *s)
case SENSOR_VELOCITY:
printf("%4.3f m/s", s->value / 1000000.0);
break;
+ case SENSOR_ENERGY:
+ printf("%.2f J", s->value / 1000000.0);
+ break;
default:
printf("unknown");
}
Index: usr.bin/systat/sensors.c
===================================================================
RCS file: /cvs/src/usr.bin/systat/sensors.c,v
retrieving revision 1.31
diff -u -p -r1.31 sensors.c
--- usr.bin/systat/sensors.c 10 Dec 2018 13:35:54 -0000 1.31
+++ usr.bin/systat/sensors.c 14 Jul 2020 17:30:43 -0000
@@ -291,6 +291,9 @@ showsensor(struct sensinfo *s)
case SENSOR_VELOCITY:
tbprintf("%4.3f m/s", s->sn_value / 1000000.0);
break;
+ case SENSOR_ENERGY:
+ tbprintf("%.2f J", s->sn_value / 1000000.0);
+ break;
default:
tbprintf("%10lld", s->sn_value);
break;
Index: sys/sys/sensors.h
===================================================================
RCS file: /cvs/src/sys/sys/sensors.h,v
retrieving revision 1.36
diff -u -p -r1.36 sensors.h
--- sys/sys/sensors.h 10 Dec 2018 13:35:54 -0000 1.36
+++ sys/sys/sensors.h 14 Jul 2020 17:30:43 -0000
@@ -53,6 +53,7 @@ enum sensor_type {
SENSOR_PRESSURE, /* pressure (mPa) */
SENSOR_ACCEL, /* acceleration (u m/s^2) */
SENSOR_VELOCITY, /* velocity (u m/s) */
+ SENSOR_ENERGY, /* energy (uJ) */
SENSOR_MAX_TYPES
};
@@ -80,6 +81,7 @@ static const char * const sensor_type_s[
"pressure",
"acceleration",
"velocity",
+ "energy",
"undefined"
};
#endif /* !_KERNEL */
