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

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Message-Id: <1236281857.3316.15.camel@localhost.localdomain>
Date:	Fri, 06 Mar 2009 01:07:37 +0530
From:	Jaswinder Singh Rajput <jaswinder@...nel.org>
To:	Peter Zijlstra <peterz@...radead.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 Thu, 2009-03-05 at 20:07 +0100, Peter Zijlstra wrote:
> On Fri, 2009-03-06 at 00:26 +0530, Jaswinder Singh Rajput wrote:
> > 
> > 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
> 

[    0.010998] AMD Performance Monitoring support detected.
[    0.011006] ... num counters:    4
[    0.011301] ... value mask:      0000000000000086
[    0.011581] ... fixed counters:  0
[    0.011808] ... counter mask:    000000000000000f
[    0.011998] ACPI: Core revision 20081204

> and its generating IRQs:
> 
> CNT:     168612     166040   Performance counter interrupts
> 

NMI:          0          0   Non-maskable interrupts
LOC:        213     980394   Local timer interrupts
CNT:          0          0   Performance counter interrupts
RES:     125349     123542   Rescheduling interrupts

--
JSR

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