Re: [RFC][PATCHv6 00/12] printk: introduce printing kernel thread

[Sergey Senozhatsky]

On (12/28/17 15:48), Sergey Senozhatsky wrote:
[..]
> and I'm actually thinking about returning back the old vprintk_emit()
> behavior
> 
>        vprintk_emit()
>        {
> +         preempt_disable();
>          if (console_trylock())
>              console_unlock();
> +         preempt_enable();
>        }

but am not going to.
it's outside of printk_kthread scope. and, besides, not every CPU which
is looping on console_unlock() came there via printk(). so by disabling
preemption in console_unlock() we cover more cases.

	-ss