Re: [RFC][PATCH v4 0/2] printk: Make printk() completely async

From: Pavel Machek
Date: Sat Apr 23 2016 - 15:36:30 EST

On Mon 2016-03-14 23:13:38, Sergey Senozhatsky wrote:
> Hello,
> The patch set is based on slightly updated Jan Kara's patches.
> This patch set makes printk() completely asynchronous: new messages
> are getting upended to the kernel printk buffer, but instead of 'direct'
> printing the actual print job is performed by a dedicated kthread.
> This has the advantage that printing always happens from a schedulable
> context and thus we don't lockup any particular CPU or even
> interrupts.

And that means that printk() will become mostly useless for debugging,

(cesky, pictures)