Re: scsi: Implement per-cpu logging buffer

[Jiri Kosina]

On Fri, 13 Feb 2015, Hannes Reinecke wrote:

> Thing is, if we were to use per-CPU buffers for printk() out of 
> necessity we have to queue these buffers for writing out. So there is a 
> time window during which the message already is in the per-CPU buffer 
> but still not printed out as printk() is currently writing out one of 
> the other per-CPU buffers.

Please also take a look at per-CPU printk() function redirection mechanism 
that got added because of printk()-from-NMI madness ('printk_func' 
pointer). It might be useful for your purposes as well.

-- 
Jiri Kosina
SUSE Labs

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