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SubjectRe: [PATCH] NMI watchdog documentation
On Wed, 23 Jul 2003 20:43:25 +0300
Ville Herva <> wrote:

> Documentation/nmi-watchdoc.txt doesn't actually tell what options need to be
> enabled in kernel config in order to use NMI watchdog. I for one found it
> confusing.
> I vaguely recall someone posted a similar patch some time ago, but it still
> doesn't seem to be present in 2.4 or 2.6-test.
> Andi: what about x86-64 - does it have something similar that should be
> mentioned?

x86-64 is the same, except APIC is always compiled in and the nmi watchdog is
always enabled with perfctr mode. mode=2 seems to also not work correctly currently.

However one caveat (even for i386): when you use perfctr mode 1 you lose the first
performance register which you may need for other things.


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