[PATCH RFC 1/4] printk: remove BOOT_PRINTK_DELAY config option

[Andrew Murray]

On Mon, 8 Jun 2026 at 14:22, Petr Mladek <pmladek at suse.com> wrote:
>
> On Mon 2026-06-01 00:17:37, Andrew Murray wrote:
> > The boot_delay (BOOT_PRINTK_DELAY) kernel parameter and printk_delay sysctl
> > are two distinct mechanisms for providing similar functionality which add a
> > delay prior to each printed printk message.
> >
> > In preparation of combining them into a single configurable feature, let's
> > first remove the kconfig option BOOT_PRINTK_DELAY.
> >
> > Signed-off-by: Andrew Murray <amurray at thegoodpenguin.co.uk>
>
> The option allowed to reduce a bit the vmlinux size when people were
> not interested into the functionality. I am not sure if it is worth
> it though. I am personally fine with this change.

I hadn't considered that need.

I'm happy to add this back in, but it would only make sense if this
option covered both boot_delay and printk_delay. That would change the
meaning of this existing Kconfig option, and would also allow the
removal of the printk_delay sysctl, I'm not sure if userspace assumes
this will always be there (probably not).

I'll leave this as is, unless there are objections.

Thanks,

Andrew Murray

>
> Reviewed-by: Petr Mladek <pmladek at suse.com>
>
> Best Regards,
> Petr