Re: Early hang with 2.6.21-rc4-rt1

Ingo Molnar
2007-03-25T07:30:00Z

* Roland Dreier <rdreier@cisco.com> wrote:

> OK, another data point. The config below boots and works with
> 2.6.21-rc4-rt1, but enabling CONFIG_CRITICAL_IRQSOFF_TIMING causes the
> early boot hang.
>
> Any idea?

ah, i havent tried that option in quite some time, so bitrot is pretty
likely. Does the problem go away if you disable CONFIG_FUNCTION_TRACE?
If the problem goes away then it would suggest some sort of
mcount()-driven recursion into hardirqs_off/hardirqs_on.

Ingo