linux-kernel - Re: [RFC/PATCH] printk: detect incomplete lines

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Date:	Mon, 12 May 2008 14:56:28 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Vegard Nossum" <vegard.nossum@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Rob Landley" <rob@...dley.net>
Subject: Re: [RFC/PATCH] printk: detect incomplete lines

On Mon, May 12, 2008 at 2:49 PM, Vegard Nossum <vegard.nossum@...il.com> wrote:
>  This printk() problem has been bugging me for a long time. Consider the
>  following code:
>
>  diff --git a/init/main.c b/init/main.c
>  index ddada7a..777e02d 100644
>  --- a/init/main.c
>  +++ b/init/main.c
>  @@ -452,17 +452,38 @@ static void __init setup_command_line(char *command_line)
>   * gcc-3.4 accidentally inlines this function, so use noinline.
>   */
>
>  +static void printk_thread(const char *msg, unsigned long wait)
>  +{
>  +       int i = 0;
>  +
>  +       while(true) {
>  +               if (i == 0)
>  +                       printk(KERN_INFO "Here we go: ");
>  +
>  +               printk("%s%s", msg, i < 7 ? ", " : "\n");

You are supposed to use KERN_CONT here.
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