Re: [PATCH 0/4 V3] Print traces on softlockup

From: Andrew Morton
Date: Tue Apr 22 2014 - 14:28:37 EST


On Tue, 22 Apr 2014 11:17:24 -0400 Don Zickus <dzickus@xxxxxxxxxx> wrote:

> Added more patches to handle the 'uniprocessor' panic case by sending NMIs
> to every cpu but self. Only affects x86, sparc.
>

Looks OK to me. A couple of things:

- Patches 1-3 should be combined so we don't create bisection holes
due to x86 and sparc build errors.

- Patch 4 adds stuff which is unusable on uniprocessor, especially
the presence of /proc/sys/kernel/softlockup_all_cpu_backtrace. We
already have #ifdef CONFIG_SMP in kern_table, so do more of that?

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