linux-kernel - Re: [PATCH AUTOSEL for 4.14 015/161] printk: Add console owner and waiter logic to load balance console writes

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Message-ID: <20180416153000.3fc795b6@gandalf.local.home>
Date:   Mon, 16 Apr 2018 15:30:00 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Sasha Levin <Alexander.Levin@...rosoft.com>,
        Pavel Machek <pavel@....cz>, Petr Mladek <pmladek@...e.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Peter Zijlstra <peterz@...radead.org>, Jan Kara <jack@...e.cz>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        Byungchul Park <byungchul.park@....com>,
        Tejun Heo <tj@...nel.org>, Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [PATCH AUTOSEL for 4.14 015/161] printk: Add console owner and
 waiter logic to load balance console writes

On Mon, 16 Apr 2018 12:00:08 -0700
Linus Torvalds <torvalds@...ux-foundation.org> wrote:



> > On Mon, Apr 16, 2018 at 11:52 AM, Linus Torvalds
> > <torvalds@...ux-foundation.org> wrote:
> > >
> > > We're better off making *no* progress, than making "unsteady progress".
> > >
> > > Really. Seriously.  

[ me inserted: ]

> On Mon, 16 Apr 2018 3:24:29 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
>
> > I'm talking about the given example of a simple memory bug that caused
> > a very subtle breakage of API, which had another trivial fix that
> > should be backported. I'm not sure that's what you were talking about.

> 
> Side note: the original impetus for this was our suspend/resume mess.
> It went on for *YEARS*, and it was absolutely chock-full of exactly
> this "I fixed the worse problem, and introduced another one".

What you are talking about here isn't what I was talking about above ;-)

-- Steve