linux-kernel - Re: [RFC][PATCH 0/6] Use printk_safe context for TTY and UART port locks

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Message-ID: <20180619223447.4369748b@vmware.local.home>
Date:   Tue, 19 Jun 2018 22:34:47 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        SergeySenozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [RFC][PATCH 0/6] Use printk_safe context for TTY and UART port
 locks

On Wed, 20 Jun 2018 11:01:49 +0900
Linus Torvalds <torvalds@...ux-foundation.org> wrote:


> There is no valid reason why an UART driver should do a printk() of
> any sort inside the critical region where the console is locked.
> 
> Just remove those printk's, don't add new crazy locking.

Perhaps we should do an audit of the console drivers and remove all
printk, pr_* , WARN*, BUG* from them.

-- Steve