Re: [PATCH] printk: inject caller information into the body of message

[Tetsuo Handa]

On 2018/09/14 21:22, Sergey Senozhatsky wrote:
> The "SMP-safe" comment becomes a bit tricky when pr_line is used with a
> static buffer. Either we need to require synchronization - umm... and
> document it - or to provide some means of synchronization in pr_line().
> Let's think what pr_line API should do about it.
> 
> Any thoughts?
> 

I'm inclined to propose a simple one shown below, similar to just having
several "struct cont" for concurrent printk() users.
What Linus has commented is that implicit context is bad, and below one
uses explicit context.
After almost all users are converted to use below one, we might be able
to get rid of KERN_CONT support.