lkml.org 
[lkml]   [2024]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH printk v4 22/27] printk: Coordinate direct printing in panic
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@linutronix.de>

Reviewed-by: Petr Mladek <pmladek@suse.com>

Best Regards,
Petr

\
 
 \ /
  Last update: 2024-05-27 16:38    [W:0.287 / U:2.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site