Re: [PATCH printk v4 22/27] printk: Coordinate direct printing in panic

[Petr Mladek]

On Wed 2024-04-03 00:17:24, John Ogness wrote:
> Perform printing by nbcon consoles on the panic CPU from the
> printk() caller context in order to get panic messages printed
> as soon as possible.
> 
> If legacy and nbcon consoles are registered, the legacy consoles
> will no longer perform direct printing on the panic CPU until
> after the backtrace has been stored. This will give the safe
> nbcon consoles a chance to print the panic messages before
> allowing the unsafe legacy consoles to print.
> 
> If no nbcon consoles are registered, there is no change in
> behavior (i.e. legacy consoles will always attempt to print
> from the printk() caller context).
> 
> Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr