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Subject: Re: perf_events: questions about cpu_has_ht_siblings() and offcore
 support
From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: Lin Ming <ming.m.lin@intel.com>, LKML <linux-kernel@vger.kernel.org>,
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Date: Fri, 22 Apr 2011 22:42:09 +0200
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On Fri, 2011-04-22 at 15:46 +0200, Stephane Eranian wrote:
> 
> perf stat -e offcore_response_0:dmd_data_rd,offcore_response_0:dmnd_rfo ......
> 
> This should still not be allowed.

Aside from the problem you mention, I don't like the whole
offcore_response_[01] thing. The offcore things are fully symmetric so
the kernel should automatically select the other one if one is taken.