Re: [patch] enabling APIC and NMI watchdog on UP systems

From: Ingo Molnar (
Date: Thu Sep 28 2000 - 16:03:16 EST

On Fri, 29 Sep 2000, Miles Lane wrote:

> Cool. Is there anything else I need to know in order to the
> UP-NMI-oopser effectively? It sounds like it'll just force an OOPS to
> occur where a deadlock might have occured in the past. Is this
> correct? If so, then using it is easy and I'll just see if I can get
> my machines to crash.

yes, it's merged into the IOAPIC based NMI oopser. Usage is completely
automatic - it will oops if a hard lockup has occured. (ie. if a processor
does not server interrupts for more than 5 seconds.) I have tested this by
artificially causing kernel lockups, and it works here as expected.

so it's a simple 'apply, compile, reboot' thing.


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