linux-kernel - Re: [RFC perf,x86] P4 PMU early draft

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Message-ID: <1265705671.11509.177.camel@laptop>
Date:	Tue, 09 Feb 2010 09:54:31 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Cyrill Gorcunov <gorcunov@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Stephane Eranian <eranian@...gle.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC perf,x86] P4 PMU early draft

On Tue, 2010-02-09 at 15:23 +1100, Paul Mackerras wrote:
> On Mon, Feb 08, 2010 at 09:45:04PM +0300, Cyrill Gorcunov wrote:
> 
> > The main problem in implementing P4 PMU is that it has much more
> > restrictions for event to MSR mapping. So to fit into current
> > perf_events model I made the following:
> 
> Is there somewhere accessible on the web where I can read about the P4
> PMU?  I'm interested to see if the constraint representation and
> search I used on the POWER processors would be applicable.

Mostly:

http://www.intel.com/Assets/PDF/manual/253669.pdf

Section 30.8 PERFORMANCE MONITORING (PROCESSORS
BASED ON INTEL NETBURST MICROARCHITECTURE)

Section 30.9 PERFORMANCE MONITORING AND INTEL HYPER-
THREADING TECHNOLOGY IN PROCESSORS BASED
ON INTEL NETBURST MICROARCHITECTURE

Section A.8 PENTIUM 4 AND INTEL XEON PROCESSOR PERFORMANCE-MONITORING
EVENTS


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