lkml.org 
[lkml]   [2014]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 5/5] x86, nmi: Add better NMI stats to /proc/interrupts and show handlers

* Don Zickus <dzickus@redhat.com> wrote:

> The main reason for this patch is because I have a hard time knowing
> what NMI handlers are registered on the system when debugging NMI issues.
>
> This info is provided in /proc/interrupts for interrupt handlers, so I
> added support for NMI stuff too. As a bonus it provides stat breakdowns
> much like the interrupts.
>
> The only ugly issue is how to label NMI subtypes using only 3 letters
> and still make it obvious it is part of the NMI. Adding a /proc/nmi
> seemed overkill, so I choose to indent things by one space. Sample
> output is below:
>
> [root@dhcp71-248 ~]# cat /proc/interrupts
> CPU0 CPU1 CPU2 CPU3
> 0: 29 0 0 0 IR-IO-APIC-edge timer
> <snip>
> NMI: 20 774 10986 4227 Non-maskable interrupts
> LOC: 21 775 10987 4228 Local PMI, arch_bt
> EXT: 0 0 0 0 External plat
> UNK: 0 0 0 0 Unknown
> SWA: 0 0 0 0 Swallowed
> LOC: 30374 24749 20795 15095 Local timer interrupts
> SPU: 0 0 0 0 Spurious interrupts
> PMI: 20 774 10986 4227 Performance monitoring interrupts
> <snip>

Looks pretty useful!

The lost vertical alignment of the counts is a problem though IMHO.

Thanks,

Ingo


\
 
 \ /
  Last update: 2014-05-07 21:41    [W:0.562 / U:0.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site