[PATCH v5 4/4] printk: use the lockless ringbuffer

[Sergey Senozhatsky]

Hi Marco,

On (20/07/18 14:10), Marco Elver wrote:
> 
> It seems this causes a regression observed at least with newline-only
> printks. I noticed this during -next testing because various debugging
> tools (K*SAN, lockdep, etc.) use e.g. pr_{err,warn,info}("\n") to format
> reports.
> 
> Without wanting to wait for a report from one of these debugging tools,
> a simple reproducer is below. Without this patch, the expected newline
> is printed.

Empty/blank lines carry no valuable payload, could you please explain
why do you consider this to be a regression?

	-ss