linux-kernel - Re: [RFC PATCH 0/5] perf: Intel uncore pmu counting support

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Message-ID: <20120328064928.GA21725@gmail.com>
Date:	Wed, 28 Mar 2012 08:49:28 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	"Yan, Zheng" <zheng.z.yan@...el.com>
Cc:	a.p.zijlstra@...llo.nl, mingo@...e.hu, andi@...stfloor.org,
	eranian@...gle.com, linux-kernel@...r.kernel.org,
	ming.m.lin@...el.com
Subject: Re: [RFC PATCH 0/5] perf: Intel uncore pmu counting support


* Yan, Zheng <zheng.z.yan@...el.com> wrote:

> Hi, all
> 
> Here is the RFC patches to add uncore counting support for Nehalem,
> Sandy Bridge and Sandy Bridge-EP, applied on top of current tip.
> The code is based on Lin Ming's old patches.
> 
> You can use 'perf stat' to access to the uncore pmu. For example:
> perf stat -a -C 0 -e 'uncore_nhm/config=0xffff/' sleep 1

My main complaint is that that's not user friendly *AT ALL*.

You need to make this useful to mere mortals: go through the 
SDM, categorize interesting looking events, look at how it can 
be expressed via tooling, add a generic event where appropriate, 
provide examples, actually *USE* it to improve the kernel or an 
app and see the workflow as it happens and improve the tooling, 
etc.

Thanks,

	Ingo
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