linux-kernel - Re: [PATCH] printk: make printk.synchronous param rw

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Message-ID: <20160427010927.GE4782@swordfish>
Date:	Wed, 27 Apr 2016 10:09:27 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	Petr Mladek <pmladek@...e.com>
Cc:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Kara <jack@...e.com>, Tejun Heo <tj@...nel.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	linux-kernel@...r.kernel.org,
	Byungchul Park <byungchul.park@....com>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [PATCH] printk: make printk.synchronous param rw

Hello,

On (04/26/16 16:15), Petr Mladek wrote:
[..]
> > diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
> > index 89f5441..9345a29 100644
> > --- a/kernel/printk/printk.c
> > +++ b/kernel/printk/printk.c
> > @@ -2757,6 +2759,13 @@ static int __init printk_late_init(void)
> >  late_initcall(printk_late_init);
> >  
> >  #if defined CONFIG_PRINTK
> > +/*
> > + * Prevent starting printk_kthread from start_kernel()->parse_args().
> > + * It's not possible at this stage. Instead, do it via the inticall
>                                                               ^^^^^^^^
> 
> s/inticall/initcall/

geez, english is hard   :(


> Otherwise, it looks fine. I like the series and keep my fingers
> crossed.
> 
> Reviewed-by: Petr Mladek <pmladek@...e.com>

thanks!

my system was massively Oopsing (due to kcompactd direct freepage
allocation, I suspect), OOM panicking, etc. during zsmalloc/zram
stress tests yesterday. and async printk worked fine for me. just
for note.

	-ss