Re: [PATCH 00/10] printk: Avoid deadlock in NMI + vprintk_emit() cleanup

[Andrew Morton]

On Mon, 25 May 2015 14:46:23 +0200 Petr Mladek <pmladek@xxxxxxx> wrote:

> The main source of deadlocks caused by printk() in NMI context has been
> solved by the commit a9edc88093287 ("x86/nmi: Perform a safe NMI stack
> trace on all CPUs").
> 
> But there are still few warnings printed in the NMI code that could
> case a deadlock. For example, see the freeze discussed at
> https://lkml.org/lkml/2015/5/20/481

I'm not (yet) convinced that we want the entire patchset btw.  Do we
really want to try to semi-support printk from NMI?  With a rather
nasty set of hacks?

Why not just delete the offending printks?
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