Messages in this thread | | | Date | Wed, 7 May 2014 17:42:31 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 5/5] x86, nmi: Add better NMI stats to /proc/interrupts and show handlers |
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* 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
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