Hi Petr,
 
> Hi all,
 
> After merging the printk tree, today's linux-next build (x86_64
> allnoconfig) produced this warning:
 
> kernel/printk/printk.c:2033:13: warning: 'suppress_message_printing' defined but not used [-Wunused-function]
> static bool suppress_message_printing(int level) { return false; }
             ^~~~~~~~~~~~~~~~~~~~~~~~~
 
seems there is no user for suppress_message_printing when CONFIG_PRINTK is disabled,
because earlier it was getting used in console_unlock and now we shifted this into vprintk_emit
which will be disabled on disabling CONFIG_PRINTk.

should we remove this defination when CONFIG_PRINTK is disabled ?

> Introduced by commit
>  375899cddcbb ("printk: make sure to print log on console.")