[ARM64] Printing IRQ stack usage information

[valdis.kletnieks at vt.edu]

On Fri, 16 Nov 2018 11:44:36 +0530, Pintu Agarwal said:

> > If your question is "Did one
> > of the CPUs blow out its IRQ stack (or come close to doing so)?" there's better
> > approaches.
> >
> Yes, exactly, this is what the main intention.
> If you have any better idea about this approach, please refer me.
> It will be of great help.

Look at the code controlled by '#ifdef CONFIG_DEBUG_STACK_USAGE'
which does the same thing for process stacks, or CONFIG_SCHED_STACK_END_CHECK
or the use of guard pages for detecting stack overrun....