On Thu, 2011-05-19 at 20:36 +0200, Jan Kiszka wrote:
> On 2011-05-19 20:15, Gilles Chanteperdrix wrote:
> > On 05/19/2011 03:58 PM, Philippe Gerum wrote:
> >> For this reason, I'm considering issuing a patch for a complete removal
> >> of the NMI latency watchdog code in Xenomai 2.6.x, disabling the feature
> >> for 2.6.38 kernels and above in 2.5.x.
> >>
> >> Comments welcome.
> > 
> > I am in the same case as you: I no longer use Xeno's NMI watchdog, so I
> > agree to get rid of it.
> Yeah. The last time we wanted to use it get more information about a
> hard hang, the CPU we used was not supported.
> Philippe, did you test the Linux watchdog already, if it generate proper
> results on artificial Xenomai lockups on a single core?

This works provided we tell the pipeline to enter printk-sync mode when
the watchdog kicks. So I'd say that we could probably do a better job in
making the pipeline core smarter wrt NMI watchdog context handling than
asking Xenomai to dup the mainline code for having its own NMI handling.

> Jan


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