On Wed, Nov 06, 2002 at 09:59:41AM -0800, george anzinger wrote:
> So then the NMI checks for timer interrupts being serviced
> in this case? But, still, why the turn off if the timer
> does not go thru the APIC? The case this came up in is an
> SMP machine, but the test in apic.c shows that the PIT
> interrupt does not go thru the APIC. Leaving NMI on seems
> to work, so I am wondering if this is just old code.
It seems that the test should be :
if (nmi_watchdog == NMI_IO_APIC) {
... disable it
}
I don't think the perfctr watchdog would be affected by the code in
io_apic.c
(on a vaguely related note, booting with nmi_watchdog=2 on my SMP
machine gives high rates of nmis :
janus:~# cat /proc/interrupts | grep NMI ; sleep 1 ; cat /proc/interrupts | grep NMI
NMI: 88358 88358
NMI: 88432 88397
when the machine is compiling kernels. I dunno why ...)
regards
john
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