Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls

[Sergey Senozhatsky]

On (10/18/16 09:45), Joe Perches wrote:
> On Wed, 2016-10-19 at 00:40 +0900, Sergey Senozhatsky wrote:
> > This patch set extends a lock-less NMI per-cpu buffers idea to
> > handle recursive printk() calls.
> 
> trivia:
> 
> recursive or reentrant?

a recursive one.

printk -> {foo} -> printk



reentrant printk() case was addressed by Petr Mladek's nmi patchset:

printk()
        foo
        -------> NMI
                printk()

        -ss