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

[Jiri Olsa <jolsa@redhat.com>]

On Fri, Feb 01, 2013 at 05:35:23PM -0800, Andi Kleen wrote:
> > 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.

yep, it was just an idea proposal.. it'd need more changes
too be able to handle this uncore stuff, but it's possible

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

yep

> 
> 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"

nice idea

jirka