Re: [PATCH v3 4/6] printk: deprecate boot_delay in favour of printk_delay

[Petr Mladek]

On Sun 2026-07-12 11:20:35, 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.
> 
> boot_delay provides a kernel parameter for delaying printk output from
> kernel start through to boot (SYSTEM_RUNNING), whereas printk_delay is
> configurable only via sysctl and thus is only used post boot.
> 
> Let's deprecate the boot_delay feature in favour of printk_delay. In order
> to preserve functionality, we'll also extend printk_delay such that it can
> additionally configured via an early kernel parameter.
> 
> Behavior change:
> 
> The delay enabled by both "boot_delay" and "printk_delay" continues
> working even in SYSTEM_RUNNING state. It must be explicitly stopped
> by setting printk_delay=0 via sysctl.
> 
> The delay is skipped when the message is suppressed in all system
> states. It used to skipped only for the boot_delay.

s/used to skipped/used to be skipped/

> Signed-off-by: Andrew Murray <amurray@xxxxxxxxxxxxxxxxxxxx>

The code changes look good to me. With the above typo fix:

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr