[BUG] Threaded printk breaks early debugging

[John Ogness]

On 2022-06-12, Sergey Senozhatsky <senozhatsky at chromium.org> wrote:
> Should a situation when we have only one online CPU be enough of a
> reason to do direct printing? Otherwise we might not have CPUs to
> wakeup khtread on, e.g. when CPU that printk is in atomic section for
> too long.

IMHO, no. Especially in that situation, we do not want printk causing
that atomic section to become even longer. If the machine has entered
normal operation, we want printk out of the way.

John Ogness