linux-kernel - Re: [RFC][PATCH 1/2] printk: lock console_sem before we unregister boot consoles

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Date:   Thu, 25 Apr 2019 11:20:03 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [RFC][PATCH 1/2] printk: lock console_sem before we unregister
 boot consoles

On Thu 2019-04-25 15:43:21, Sergey Senozhatsky wrote:
> On (04/25/19 12:52), Sergey Senozhatsky wrote:
> > > Could we remove it in this patch? It touches it indirectly anyway.
> > 
> > Sure we can.
> > 
> > We also can take extra care of pr_info("%sconsole [%s%d] enabled\n".
> > Right now we do
> > 
> > 	...
> > 	console_unlock();
> > 	console_sysfs_notify();
> > 
> > 	pr_info("%sconsole [%s%d] enabled\n",....
> > 
> > 
> > But we can simply move that pr_info() a bit up:
> > 
> > 	pr_info("%sconsole [%s%d] enabled\n",
> > 	console_unlock();
> > 	console_sysfs_notify();
> > 
> > 
> > So the message will be printed on all consoles.
> 
> ---
> 
> Petr, Steven, would you prefer to have it as two separate patches - one
> removes the comment; the other one moves pr_info("console enabled") - or
> as one patch? It's sort of trivial enough to be in just one patch, but
> I also can submit it as separate changes.

One patch is enough from my point of view. The moved pr_info()
solves the problem that is described by the comment.

Best Regards,
Petr