[linux-pm] [PATCH] ACPI: add missing KERN_* constants to printks

[Frans Pop]

On Wednesday 04 February 2009, Geert Uytterhoeven wrote:
> > This patch looks broken to me, at least for some of your changes.
> > For example, in the bit quoted above all printks together make up
> > *one single* message, which means that only the _first_ of the
> > printks should have the KERN_* prefix. printks that are continuations
> > should not have the prefix.
>
> Actually they should, but the right prefix :-)

Hmm. I was going by memory and from what I've seen in existing code, but
also found this (somewhat old) post:
https://lists.linux-foundation.org/pipermail/kernel-janitors/2005-October/014375.html

> Quoting include/linux/kernel.h:
> | /*
> |  * Annotation for a "continued" line of log printout (only done after a
> |  * line that had no enclosing \n). Only to be used by core/arch code
> |  * during early bootup (a continued line is not SMP-safe otherwise).
> |  */
> | #define KERN_CONT       ""
>
> Please also consider the note about SMP-safeness.

From that it looks like KERN_CONT should only be used in a very limited
context, but I guess this example qualifies.