No harm in adding it.

Mark Kettenis <[email protected]> wrote:

> 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 */
> 

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