Re: [debug patch] printk: Add a printk killswitch to robustify NMI watchdog messages

[Ingo Molnar <mingo@xxxxxxx>]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> Aside from not compiling (someone stuck a ref to wake_up_klogd 
> somewhere in lib/) this does delay the whole of printk() output by 
> up to a jiffy, if the machine dies funny you could be missing large 
> parts of the output :/

oh, that's bad and i missed that aspect.

We want the console *output* immediately. That's non-negotiable!

What we want to delay are the various wakeups of secondary recipients 
of printks ...

Thanks,

	Ingo
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