From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: Re: [RFC][PATCH 1/2] printk: lock console_sem before we unregister boot consoles
Date: Thu, 25 Apr 2019 16:56:06 +0900 [thread overview]
Message-ID: <20190425075606.GA16917@jagdpanzerIV> (raw)
In-Reply-To: <20190425075002.r4g325fyh5jmabzs@pathway.suse.cz>
On (04/25/19 09:50), Petr Mladek wrote:
> > 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.
>
> Great idea!
>
> It would deserve a separate patch that moves the pr_info()
> and removes the invalid comment.
>
> Actually, the pr_info() would deserve a comment explaining
> why it should be called before console_unlock().
Good. So I think I'll drop patch #1 from the series, add
two more patches - invalid comment + pr_info() - and rework
locking in patch #3 (this should take care of a race which
patch #1 was intended to fix).
-ss
next prev parent reply other threads:[~2019-04-25 7:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-23 6:25 [RFC][PATCH 0/2] Access console drivers list under console_sem Sergey Senozhatsky
2019-04-23 6:25 ` [RFC][PATCH 1/2] printk: lock console_sem before we unregister boot consoles Sergey Senozhatsky
2019-04-24 14:49 ` Petr Mladek
2019-04-25 3:52 ` Sergey Senozhatsky
2019-04-25 6:43 ` Sergey Senozhatsky
2019-04-25 9:20 ` Petr Mladek
2019-04-25 16:05 ` Steven Rostedt
2019-04-25 7:50 ` Petr Mladek
2019-04-25 7:56 ` Sergey Senozhatsky [this message]
2019-04-25 9:37 ` Sergey Senozhatsky
2019-04-23 6:25 ` [RFC][PATCH 2/2] printk: take console_sem when accessing console drivers list Sergey Senozhatsky
2019-04-24 15:13 ` Petr Mladek
2019-04-25 5:19 ` Sergey Senozhatsky
2019-04-25 6:47 ` Sergey Senozhatsky
2019-04-25 8:53 ` Petr Mladek
2019-04-23 13:48 ` [RFC][PATCH 0/2] Access console drivers list under console_sem Steven Rostedt
2019-04-24 5:43 ` Sergey Senozhatsky
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