Hi Brent, On Fri, Sep 12, 2014 at 12:52 AM, Brent <brent...@hotmail.com> wrote: > > I figured out how to change the watchdog duration. The example program is > here: > http://embeddedfreak.wordpress.com/2010/08/23/howto-use-linux-watchdog/ > > And a good description of the available commands is here: > https://github.com/shengchao/beaglebone-angstrom-xenomai/blob/master/Documentation/watchdog/watchdog-api.txt > > However, my first question regarding the kernel panic still remains. Also, > if I do get a kernel panic, how do I record the error message/code so that I > can debug it later? >
Regarding rebooting on a panic, take a look at sysctl(8) and kernel.panic. You may also be interested in kernel.panic_on_oops: https://github.com/torvalds/linux/blob/master/Documentation/sysctl/kernel.txt#L520 I don't know of an easy way to record the information dumped from the panic. Frank > > On Thursday, September 11, 2014 9:15:02 PM UTC-4, Brent wrote: >> >> Does anyone know that if the watchdog timer is enabled, will a kernel panic >> still allow the watchdog to reset? Since it's not an external watchdog, I >> wasn't sure what would happen. >> >> I've seen some cases where the kernel will panic and completely "brick" my >> device until it is manually rebooted. I haven't had a chance to debug why >> the kernel panics at what seems like random times, so I need to do some >> investigation. However, my band-aid to the problem would be to enable the >> watchdog timer so that it will automatically reboot. I would just try it, >> but I'm having a hard time reproducing a kernel panic. >> >> Also, on a side note, how do you change the default duration of 60 seconds? >> It seems like this info would be all over the internet, but I haven't found >> anywhere that talks about this. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
