On (06/22/18 17:21), Alan Cox wrote:

On Wed, 20 Jun 2018 11:44:13 +0900
Linus Torvalds [off-list ref] wrote:

quoted

On Wed, Jun 20, 2018 at 11:34 AM Steven Rostedt [off-list ref] wrote:

quoted

Perhaps we should do an audit of the console drivers and remove all
printk, pr_* , WARN*, BUG* from them.  

Only the actual _printing_ parts.

No because they are normally rather useful because that port isn't the
console. If you trylock

trylock is boring, me wants printk_safe_mask everywhere :)

Really that's all that you need - log the message to whichever console
targets you can currently safely do so. If it's none well there was
always the proposed morse code keyboard light driver 8)

Hm, just discard messages? With printk_safe_mask we keep everything
in a lockless per-CPU buffer, which we flush [per-CPU buffer -> printk logbuf]
from irq_work, so we can print it later.

	-ss