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Message-ID: <1343061382.26034.1.camel@twins>
Subject: Re: [PATCH 2/4] perf/x86: Fix format definition of SNB-EP uncore
 QPI box
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Stephane Eranian <eranian@google.com>
Cc: "Yan, Zheng" <zheng.z.yan@intel.com>, mingo@elte.hu, andi@firstfloor.org,
        linux-kernel@vger.kernel.org
Date: Mon, 23 Jul 2012 18:36:22 +0200
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On Mon, 2012-07-23 at 18:33 +0200, Stephane Eranian wrote:
> 
> DEFINE_UNCORE_FORMAT_ATTR(event, event, "config:0-7,21");
> 
> Assuming the event parser supports disjoint bits. 

It does. Userspace should provide a 9bit value in this case and the 9th
bit will be stored in bit 21.