Re: [PATCH 0/2] perf: add new uncore command

[Andi Kleen <ak@linux.intel.com>]

> And there's a patchset [1] from Jiri to support some kind of formula -
> yeah, now I've written the correct spelling. :) - that might fit to this
> purpose if you provide suitable formula file IMHO.  So I guess we don't
> need to have another command and can reuse perf stat, no?

Yes with a proper expression engine it's all redundant. I haven't 
looked at Jiri's stuff in detail, but it seemed very simple-minded
and may not support all the computation needed.

Also would allow to finally replace the bogus perf stat -d frontend/backend
counters.

For stat there's no really a compelling reason to integrate
it, the usual wrappers work as well. They have the advantage that
they can be written in real programing languages, instead of trying
to invent a new one.

Expressions integrated would be mainly useful for things like
"counting perf top"

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only