[PATCH] Add call to non-crashing cores through IPI

Russell King - ARM Linux linux at arm.linux.org.uk
Mon Nov 22 09:21:01 EST 2010


On Mon, Nov 22, 2010 at 06:37:09PM +0530, Santosh Shilimkar wrote:
> > ARM: smp: make smp_send_stop() wait for secondary CPUs to stop
> >
> > Wait up to one second for secondary CPUs to respond to a request to
> > stop.  This avoids the sender CPU continuing and possibly destroying
> > state before the recipients have had a chance to respond to the stop.
> > However, if the recipients have crashed, we won't hang the sender
> > CPU indefinitely.
> >
> Just tried this patch thinking it might fix the reboot issue
> reported earlier. But it doesn't help.

I was hoping that it might change the behaviour slightly, but if not
the patch can't do any harm.

The reboot stuff works fine on Versatile Express with Cortex A9, so
I suspect your problem might be specific to OMAP.



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