linux-kernel - Re: [PATCH tty-next v1 0/2] convert 8250 to nbcon

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Message-ID: <2024090554-mating-humiliate-292b@gregkh>
Date: Thu, 5 Sep 2024 16:09:12 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: John Ogness <john.ogness@...utronix.de>
Cc: Jiri Slaby <jirislaby@...nel.org>, Petr Mladek <pmladek@...e.com>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Tony Lindgren <tony@...mide.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Serge Semin <fancer.lancer@...il.com>,
	Rengarajan S <rengarajan.s@...rochip.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jeff Johnson <quic_jjohnson@...cinc.com>,
	Lino Sanfilippo <l.sanfilippo@...bus.com>,
	Derek Barbosa <debarbos@...hat.com>
Subject: Re: [PATCH tty-next v1 0/2] convert 8250 to nbcon

On Thu, Sep 05, 2024 at 03:53:17PM +0206, John Ogness wrote:
> The recent printk rework introduced a new type of console NBCON
> that will perform printing via a dedicated kthread during
> normal operation. For times when the kthread is not available
> (early boot, panic, reboot/shutdown) the NBCON console will
> print directly from the printk() calling context (even if from
> NMI).
> 
> Futher details about NBCON consoles are available here [0].

Really?  That link calls them "NOBKL", is that the same thing?

confused,

greg k-h