Re: [patch] add kdump_after_notifier

Bernhard Walle
2007-08-14T08:37:38Z

* Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-08-14 10:34]:
> Vivek Goyal wrote:
> > On Fri, Aug 03, 2007 at 02:05:47PM +1000, Keith Owens wrote:
> >
> >
> > To sum up, couple of options come to mind.
> >
> > - Register all the RAS tools on die notifier and panic
> > notifier lists with fairly high priority. Export list
> > of RAS tools to user space and allow users to decide the
> > order of execution and priority of RAS tools.
> >
> > - Create a separate RAS tool notifier list (ras_tool_notifer_list).
> > All the RAS tools register on this list. This list gets priority
> > over die or panic notifier list. User decides the oder of execution
> > of RAS tools.
> >
> > Here assumption is that above list will not be exported to modules.
> > All the RAS tools will be in kernel and they always get a priority
> > to inspect an event.
> >
> > What do others think?
>
> Very good idea. But there is a problem how to give default priority to RAS tools.
>
> How about priority changeable notifier_list? User can change list order
> dynamically if they want. Of course, we have to give highest priority to kdump
> by default. It is very useful for users who want to use some RAS tools.

I think that was the idea of the first “-” (“export list of RAS tools
to user space”).

Thanks,
Bernhard