linux-kernel - Re: [PATCH printk v3 04/40] printk: Prepare for SRCU console list protection

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Date:   Tue, 8 Nov 2022 13:14:31 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: Re: [PATCH printk v3 04/40] printk: Prepare for SRCU console list
 protection

On Mon 2022-11-07 15:22:02, John Ogness wrote:
> Provide an NMI-safe SRCU protected variant to walk the console list.
> 
> Note that all console fields are now set before adding the console
> to the list to avoid the console becoming visible by SCRU readers
> before being fully initialized.
> 
> This is a preparatory change for a new console infrastructure which
> operates independent of the console BKL.
> 
> Suggested-by: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: John Ogness <john.ogness@...utronix.de>
> Acked-by: Miguel Ojeda <ojeda@...nel.org>
> Reviewed-by: Paul E. McKenney <paulmck@...nel.org>

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

Best Regards,
Petr