[igt-dev] [RFC i-g-t] tests/perf_pmu: Verify engine busyness accuracy

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-01-30 18:11:04)
> +static double __error(double val, double ref)
> +{
> +       return (100.0 * val / ref) - 100.0;

ref == 0? sign?
-Chris