Re: [PATCH] printk: Don't discard earlier unprinted messages to make space

From: David Woodhouse
Date: Thu Oct 22 2015 - 08:36:31 EST


On Thu, 2015-10-22 at 14:18 +0200, Jan Kara wrote:
>
> >
> > What happened to it? And how do we fix it?
>
> Hard to fix since you'd easily get RCU stalls and softlockup messages on
> systems with lots of CPUs and heavy printk traffic...

If we have to explicitly opt in to synchronous output, then such things
should be tolerable.

--
dwmw2

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