Re: [patch] add kdump_after_notifier

Bernhard Walle
2007-08-16T09:45:22Z

* Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-08-16 11:26]:
> Vivek Goyal wrote:
> > - Modify Kdump to register on die_chain list.
> > - Modify Kdb to register on die_chain list.
> > - Export all the registered members of die_chain through sysfs along with
> > their priorities. Priorities should be modifiable. Most likely one
> > shall have to introduce additional field in struct notifier_block. This
> > field will be a string as an identifier of the user registerd. e.g
> > "Kdump", "Kdb" etc.
> >
> > Now user will be able to view all the die_chain users through sysfs and
> > be able to modify the order in which these should run by modifying their
> > priority. Hence all the RAS tools can co-exist.
>
> This is my image of your proposal.
>
> - Print current order
>
> # cat /sys/class/misc/debug/panic_notifier_list
> priority name
> 1 IPMI
> 2 watchdog
> 3 Kdb
> 4 Kdump

I think something like

/sys/class/misc/debug/panic_notifier/ipmi/priority
/sys/class/misc/debug/panic_notifier/watchdog/priority
/sys/class/misc/debug/panic_notifier/kdb/priority
/sys/class/misc/debug/panic_notifier/kdump/priority

would be better. It's more self-describing if you want to change the
order.

Thanks,
Bernhard