Re: [PATCH 0/3] make printk work again

From: Jan Kara
Date: Wed Oct 19 2016 - 10:53:52 EST

On Tue 18-10-16 19:08:30, Peter Zijlstra wrote:
> This basically fixes printk by evading everything it does.
> There's too many problems with printk, from sleeping locks to broken console
> drivers. Stop using it.

I agree that printk is fragile and your patches are likely fine for machine
where you do kernel development. However for production servers with
hundreds of SCSI LUNs assigned I don't think it is a viable solution - I'm
pretty sure those machines would take ages to boot (if they ever boot) with
early_printk implementation. So do you intend this as "the ultimate printk
solution" or just a "kernel developers debugging aid"? :)

Jan Kara <jack@xxxxxxxx>