linux-kernel - Re: printk meeting at LPC

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Message-ID: <20190918081012.GB37041@jagdpanzerIV>
Date:   Wed, 18 Sep 2019 17:10:12 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Petr Mladek <pmladek@...e.com>,
        Andrea Parri <parri.andrea@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Theodore Ts'o <tytso@....edu>, Paul Turner <pjt@...gle.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Prarit Bhargava <prarit@...hat.com>
Subject: Re: printk meeting at LPC

On (09/18/19 09:42), John Ogness wrote:
> > It's going to be a bit harder when we have per-console kthread.
> 
> Each console has its own iterator. This iterators will need to advance,
> regardless if the message was printed via write() or write_atomic().

Great.

->atomic_write() path will make sure that kthread is parked or will
those compete for uart port?

	-ss