linux-kernel - Re: [rfc 1/3] perf, x86: P4 PMU

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Message-ID: <AANLkTi=QAOvkaBGpnVCusKsD1mrfdLDEexbOhokvp0Q2@mail.gmail.com>
Date:	Fri, 26 Nov 2010 16:47:50 +0300
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Stephane Eranian <eranian@...gle.com>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>, ming.m.lin@...el.com
Subject: Re: [rfc 1/3] perf, x86: P4 PMU - describe config format

On Fri, Nov 26, 2010 at 4:06 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Fri, 2010-11-26 at 16:04 +0300, Cyrill Gorcunov wrote:
>> if none therad is active, single any
>> thread is active, both threads are active and finally any thread is
>> active (which is exactly 0b11 in single thread machine). i know it's
>> weird ;)
>>
> BTW, does P4 mandate SYS_CAP_ADMIN for counting another thread's events?
>
The events which are shared across threads mandated to have
SYS_CAP_ADMIN of course.
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