Re: Re: [Xenomai-help] NMI watchdog: Loading of xeno_native leads to

["M. Koehrer" <mathias_koehrer@domain.hid>]

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Hi Jan,

here is my /proc/interrupts 

           CPU0
  0:     331260   IO-APIC-edge      timer
  1:          8   IO-APIC-edge      i8042
  7:          0   IO-APIC-edge      parport0
  9:          0   IO-APIC-fasteoi   acpi
 14:         12   IO-APIC-edge      ide0
 16:       1022   IO-APIC-fasteoi   eth0
 19:       2358   IO-APIC-fasteoi   libata
NMI:     331248
LOC:     331233
ERR:          0
MIS:          0

I have enclosed a config.gz file of my 2.6.19.1 kernel.

Mathias

> > Before digging deeper into the issue I have mailed yesterday (see below),
> I have to solve and
> > to understand the NMI watchdog feature.
> > I have enabled the NMI watchdog in the kernel configuration and set the
> time value to 100 now (100us).
> > Also, I passed the nmi_watchdog=1 kernel parameter to GRUB.
> > In dmesg's output I see the line:
> > Testing NMI watchdog ... OK.
> >  
> > The Xenomai functionality is compiled as modules (as far as it is
> possible).
> > 
> > Now, I do a 
> > modprobe xeno_nucleus
> > This looks fine.
> > 
> > Now, I do a 
> > modprobe xeno_native
> > to load the native skin (I need it for my application to run).
> > Then the PC reboots directly.
> > This means I have no chance to  start my application as the PC reboots
> before
> > I can start it...
> > 
> > I have the impression that some important thing is missing in my test.
> > The xeno timer is not started after modprobe xenu_nucleus
> > The contents of /proc/timer is:
> > status=off:setup=120:tickval=0:jiffies=0
> > 
> > Could this be a reason for the behaviour?
> 
> That's normal, it is started on loading the first skin.
> 
> > Can I start the timer before loading xeno_native to avoid the NMIs?
> 
> Nope, the NMI must work as you tried to use it. I have basically the
> same setup here (all modular, NMI on by default), but even with latest
> kernel/ipipe everything is fine.
> 
> Could you post your .config to compare details? Also the output of
> /proc/interrupts over .19 would be interesting.
> 
> Jan
> 

-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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