Re: [PATCH] printk: Make CONSOLE_LOGLEVEL_QUIET configurable

[Steven Rostedt]

On Tue, 19 Jun 2018 13:57:26 +0200
Hans de Goede <hdegoede@xxxxxxxxxx> wrote:

> The goal of passing the "quiet" option to the kernel is for the kernel
> to be quiet unless something really is wrong.
> 
> Sofar passing quiet has been (mostly) equivalent to passing
> loglevel=4 on the kernel commandline. Which means to show any messages
> with a level of KERN_ERR or higher severity on the console.
> 
> In practice this often does not result in a quiet boot though, since
> there are many false-positive or otherwise harmless error messages printed,
> defeating the purpose of the quiet option. Esp. the ACPICA code is really
> bad wrt this, but there are plenty of others too.
> 
> This commit makes CONSOLE_LOGLEVEL_QUIET configurable.
> 
> This for example will allow distros which want quiet to really mean quiet
> to set CONSOLE_LOGLEVEL_QUIET so that only messages with a higher severity
> then KERN_ERR (CRIT, ALERT, EMERG) get printed, avoiding an endless game
> of whack-a-mole silencing harmless error messages.
> 
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>

-- Steve