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Date: Fri, 1 Feb 2013 17:35:23 -0800 From: Andi Kleen <ak@...ux.intel.com> To: Namhyung Kim <namhyung@...nel.org> Cc: Stephane Eranian <eranian@...gle.com>, linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu, acme@...hat.com, jolsa@...hat.com, namhyung.kim@....com Subject: Re: [PATCH 0/2] perf: add new uncore command > 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@...ux.intel.com -- Speaking for myself only -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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