Hi Carl-Daniel,
> Documentation/nmi_watchdog.txt does not say which CONFIG_XYZ option has
> to be enabled to use the NMI watchdog, but it mentions that IO-APIC is
> somewhat related.
>
> Documentation/Configure.help is equally unclear. The NMI watchdog is
> mentioned as related to CONFIG_SMP, and the help text for
> CONFIG_X86_UP_APIC says: "The local APIC supports [..] the NMI watchdog"
> That does not necessarily mean that NMI is compiled in once local APIC
> support is selected.
>
> Can someone please shed some light on this issue? I'm willing to create
> a patch to fix the docs once I know if the NMI watchdog is compiled in
> alsways or on what it depends.
the nmi_watchdog is always compiled in if you select "CONFIG_X86_LOCAL_APIC"
see "arch/i386/kernel/Makefile"
ciao, Marc
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