Messages in this thread | | | Date | Fri, 1 Feb 2013 17:35:23 -0800 | From | Andi Kleen <> | Subject | Re: [PATCH 0/2] perf: add new uncore command |
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> 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
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