linux-kernel - Re: perf_events: questions about cpu_has_ht

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Message-ID: <1303504929.4865.4.camel@laptop>
Date:	Fri, 22 Apr 2011 22:42:09 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Lin Ming <ming.m.lin@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"Kleen, Andi" <andi.kleen@...el.com>
Subject: Re: perf_events: questions about cpu_has_ht_siblings() and offcore
 support

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.



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