[Intel-gfx] [PATCH i-g-t 3/3] tests/perf_pmu: Verify engine busyness accuracy

[Chris Wilson]

Quoting Tvrtko Ursulin (2017-12-19 15:45:43)
> +static void debug_error(const char *str, double val, double ref)
> +{
> +       igt_debug("%s=%.2f%% (%.2f/%.2f)\n", str, __error(val, ref), val, ref);
> +}
> +
> +static void log_error(const char *str, double val, double ref)
> +{
> +       debug_error(str, val, ref);
> +       igt_info("%s=%.2f%%\n", str, __error(val, ref));
> +}

Looking at the CI output, these could really do with some explanation.
-Chris