linux-kernel - Re: [PATCH] perfcounters: IRQ and NMI support on AMD CPUs

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Date:	Thu, 05 Mar 2009 19:45:30 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perfcounters: IRQ and NMI support on AMD CPUs

On Fri, 2009-03-06 at 00:02 +0530, Jaswinder Singh Rajput wrote:
> Hello Peter,
> 
> Ahh, so that day you was getting triple fault in this ?
> 
> On Thu, 2009-03-05 at 18:20 +0100, Peter Zijlstra wrote:
> > Subject: perfcounters: IRQ and NMI support on AMD CPUs
> > From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > Date: Thu Mar 05 18:08:27 CET 2009
> > 
> > The below completes the K7+ performance counter support.
> > 
> > Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > ---
> >  arch/x86/kernel/cpu/perf_counter.c |  272 +++++++++++++++++++++++++++++++------
> >  1 file changed, 228 insertions(+), 44 deletions(-)
> > 
> 
> It was in my TODO list, but I am glad that you finished it :-)
> 
> Any how with this patch on my 64 bit AMD box I am getting:
> 
> [jaswinder@...v5 perfcounters]$ ./perfstat -e 0,1,2,3 ls > /dev/null 
> 
>  Performance counter stats for 'ls':
> 
> perfstat: perfstat.c:415: main: Assertion `res == sizeof(single_count)'
> failed.
> Aborted
> [jaswinder@...v5 perfcounters]$ 
> 
> [root@...v5 perfcounters]# ./kerneltop 
> KernelTop refresh period: 2 seconds
> kerneltop: kerneltop.c:883: main: Assertion `res == sizeof(ip)' failed.
> Aborted
> [root@...v5 perfcounters]#

Ah, I think you will need a fresh copy of both utilities, Paul recently
changed the ABI.

http://people.redhat.com/mingo/perfcounters/

Contains the latest IIRC

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