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Date:   Wed, 13 Mar 2019 19:06:53 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc:     Sebastian Siewior <bigeasy@linutronix.de>,
        John Ogness <john.ogness@linutronix.de>,
        Petr Mladek <pmladek@suse.com>, linux-kernel@vger.kernel.org,
        Peter Zijlstra <peterz@infradead.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Daniel Wang <wonderfly@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
        Jiri Slaby <jslaby@suse.com>,
        Peter Feiner <pfeiner@google.com>,
        linux-serial@vger.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: Re: [RFC PATCH v1 00/25] printk: new implementation
Message-ID: <20190313100653.GA23478@jagdpanzerIV>
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On (03/13/19 18:27), Sergey Senozhatsky wrote:
> > Does this mean we keep irq_work part or we bury it and solve it by other
> > means?
>
> That's a very good question. Because if we add console_trylock()
> to printk(), then we can't invoke ->atomic() consoles when console_sem
> is already locked, because one of the registered drivers is currently
> being modified by a 3rd party and printk(), thus, must stay away.
	   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	    one of the drivers or the list itself.

	-ss