Re: [PATCH i-g-t v3 6/9] intel-gpu-overlay: Use RAPL PMU for power reading

Chris Wilson
2017-10-10T12:25:45Z

Quoting Tvrtko Ursulin (2017-10-10 13:05:40)
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>
> Wire up to the RAPL PMU for GPU energy readings.
>
> The only complication is that we have to add code to parse:
>
> # cat /sys/devices/power/events/energy-gpu.scale
> 2.3283064365386962890625e-10
>
> v2: Link with -lm.
> v3: strtod can handle scientific notation, even though my initial
> reading of the man page did not spot that. (Chris Wilson)
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris