linux-kernel - Re: [patch RFC 07/29] printk: Convert console list walks for readers to list lock

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Message-ID: <YyHNHWBPfcqVY0uY@google.com>
Date:   Wed, 14 Sep 2022 21:46:21 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        John Ogness <john.ogness@...utronix.de>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Helge Deller <deller@....de>,
        Jason Wessel <jason.wessel@...driver.com>,
        Daniel Thompson <daniel.thompson@...aro.org>
Subject: Re: [patch RFC 07/29] printk: Convert console list walks for readers
 to list lock

On (22/09/11 00:27), Thomas Gleixner wrote:
> Facilities which expose console information to sysfs or procfs can use the
> new list protection to keep the list stable. No need to hold console lock.

Yeah I guess it makes sense to take the list lock in console stop/start then.
(I wonder if it'll be better to do it in this patch.)

> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

Reviewed-by: Sergey Senozhatsky <senozhatsky@...omium.org>