[PATCH V4] kernel, add bug_on_warn

[Andi Kleen]

> > I suppose ... but that would mean I would have to explain to an end user the
> > elaborate process of enabling kdb, inserting a break point, etc.  The whole
> > purpose of this is to let an end user panic on WARN() easily.
> > 
> > Asking an end user to enable kdb is magnitudes worse than asking them to
> > recompile a kernel.
> 
> Agreed. Asking a customer to setup and run kdb and put breakpoints is much
> more pain than simply asking to reboot kernel with a command line option.

If you have a command line option to execute kdb commands you still
would only have a command line option, just a slightly longer one.

kdb="on, bp warn_slowpath_common sr c, go" 

But it would be a generic facility instead of a special purpose hack.

-Andi