Subject: Re: [RFC] perf_events: support for uncore a.k.a. nest units
From: Peter Zijlstra <peterz@infradead.org>
To: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
       Andi Kleen <andi@firstfloor.org>, Paul Mackerras <paulus@samba.org>,
       Stephane Eranian <eranian@googlemail.com>,
       Frederic Weisbecker <fweisbec@gmail.com>,
       Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>,
       Dan Terpstra <terpstra@eecs.utk.edu>, Philip Mucci <mucci@eecs.utk.edu>,
       Maynard Johnson <mpjohn@us.ibm.com>, Carl Love <cel@us.ibm.com>
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Date: Wed, 20 Jan 2010 22:33:24 +0100
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On Wed, 2010-01-20 at 14:34 +0100, Peter Zijlstra wrote:

> So how about PERF_TYPE_{CORE,NODE,SOCKET} like things?

OK, so I read most of the intel uncore stuff, and it seems to suggest
you need a regular pmu event to receive uncore events (chained setup),
this seems rather retarded since it wastes a perfectly good pmu event
and makes configuring all this more intricate...

A well, nothing to be done about that I guess.. 


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