linux-kernel - Re: [RFC][PATCHv6 00/12] printk: introduce printing kernel thread

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Message-ID: <20171218200806.56a6507e@gandalf.local.home>
Date:   Mon, 18 Dec 2017 20:08:06 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     Petr Mladek <pmladek@...e.com>, Tejun Heo <tj@...nel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Jan Kara <jack@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Pavel Machek <pavel@....cz>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCHv6 00/12] printk: introduce printing kernel thread

On Tue, 19 Dec 2017 10:03:11 +0900
Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> wrote:


> ... do you guys read my emails? which part of the traces I have provided
> suggests that there is any improvement?

The traces I've seen from you were from non-realistic scenarios. But I
have hit issues with printk()s happening that cause one CPU to do all
the work, where my patch would fix that. Those are the scenarios I'm
talking about.

-- Steve