linux-kernel - Re: [PATCH] perf, x86: Add Silvermont (22nm Atom) support

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Message-ID: <51E7CABD.3040105@intel.com>
Date:	Thu, 18 Jul 2013 19:00:13 +0800
From:	"Yan, Zheng" <zheng.z.yan@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	linux-kernel@...r.kernel.org, mingo@...e.hu, eranian@...gle.com,
	ak@...ux.intel.com
Subject: Re: [PATCH] perf, x86: Add Silvermont (22nm Atom) support

On 07/18/2013 04:42 PM, Peter Zijlstra wrote:
> On Thu, Jul 18, 2013 at 01:39:28PM +0800, Yan, Zheng wrote:
>> On 07/18/2013 01:36 PM, Yan, Zheng wrote:
>>> From: "Yan, Zheng" <zheng.z.yan@...el.com>
>>>
>>> Compare to old atom, Silvermont has offcore and has more events
>>> that support PEBS.
>>>
>>> Silvermont has two offcore response configuration MSRs, but the
>>> event code for OFFCORE_RSP_1 is 0x02b7. To avoid complicating
>>> intel_fixup_er(), use INTEL_UEVENT_EXTRA_REG to define offcore
>>> MSRs. So intel_fixup_er() can find the code for OFFCORE_RSP_1
>>> by x86_pmu.extra_regs[1].event.
>>>
>>
>> Document is at http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf, but it has no PEBS event list.
> 
> Why isn't this in the regular SDM like all the other stuff?
> 

I don't know, probably they still haven't finished the document yet. (above PDF has no PEBS event list). 

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