Re: [PATCH 3/3] perf stat: Add --metrics-file option

[Andi Kleen]

> +--metrics-file file::
> +Read metrics definitions from file in addition to compiled in metrics.
> +

You would need to define the syntax and format. Perhaps in a separate
man page.

Also there are some asserts that can be triggered by expressions. I think
you should fix those too and convert them to errors.

-Andi