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Message-Id: <1236280076.5187.403.camel@laptop>
Date: Thu, 05 Mar 2009 20:07:56 +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 00:26 +0530, Jaswinder Singh Rajput wrote:
> On Thu, 2009-03-05 at 19:45 +0100, Peter Zijlstra wrote:
> > On Fri, 2009-03-06 at 00:02 +0530, Jaswinder Singh Rajput wrote:
> > >
> > > 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
> >
>
> With fresh copy, perfstat is working.
>
> But kerneltop is still not working and I am not getting any NMI Interrupts.
What does your dmegs look like?
Mine read like:
[ 0.012002] AMD Performance Monitoring support detected.
[ 0.013002] ... num counters: 4
[ 0.014001] ... value mask: 0000ffffffffffff
[ 0.015001] ... fixed counters: 0
[ 0.016001] ... counter mask: 000000000000000f
and its generating IRQs:
CNT: 168612 166040 Performance counter interrupts
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