Re: [PATCH v3 2/2] Make hard lockup detection use timestamps

[Don Zickus]

On Thu, Jul 28, 2011 at 05:16:00PM -0700, ZAK Magnus wrote:
> No news?
> 
> I've been testing and looking into issues and I realized dump_stack()
> calls touch_nmi_watchdog(). That wrecks what the patch is trying to do
> so I'm changing it to save the trace and print it later after the
> stall has completed. This would also resolve some other things you
> were saying weren't so good. Hopefully the logic is similar enough
> that some things you may have learned still apply.

Sorry, I have been caught up with a bunch of other work related issues
here.  I should be able to poke at this today.

Yeah, I forgot about the console write path.  That was causing another
separate problem for me a while ago with softlockups causing a
touch_nmi_watchdog on all cpus.  I still have to trade fixes to get that
in.

Cheers,
Don
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/