linux-kernel - Re: [RFC][PATCH 6/6] x86, nmi: print out NMI stats in /proc/interrupts

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Message-ID: <20110822152839.GE2067@redhat.com>
Date:	Mon, 22 Aug 2011 11:28:39 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	x86@...nel.org, Andi Kleen <andi@...stfloor.org>,
	Robert Richter <robert.richter@....com>, ying.huang@...el.com,
	LKML <linux-kernel@...r.kernel.org>, jason.wessel@...driver.com
Subject: Re: [RFC][PATCH 6/6] x86, nmi: print out NMI stats in
 /proc/interrupts

On Mon, Aug 22, 2011 at 04:27:42PM +0200, Peter Zijlstra wrote:
> On Fri, 2011-08-19 at 16:37 -0400, Don Zickus wrote:
> > NMI:       4161       4155        158       4194   Non-maskable interrupts
> > SWA:          0          0          0          0   Unknown NMIs swallowed
> >   0:       4161       4155        158       4194   NMI  PMI, arch_bt
> > UNK:          0          0          0          0   NMI
> > EXT:          0          0          0          0   NMI 
> 
> Yeah, not too pretty.. I would have expected something like:
> 
> NMI:
>  PMI:
>  uv:
>  arch_bt:
>  ...
>  swallowed:
>  unknown:

Yeah, I kinda wanted to do that originally, but wasn't sure what the rules
were for the output structure of that file.  I even toyed with the idea of
creating a /proc/nmi file to do that too, but thought that it might confuse
people.

> 
> But then, I'm sure some people would complain to that as I'm pretty sure
> it'll break stuff parsing /proc/interrupts

That's why I just posted my half-ass patch to see if it was

- useful info
- gather ideas on the best way to present it

Cheers,
Don

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