linux-kernel - Re: [PATCH] Cute feature: colored printk output

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Message-ID: <20071006110835.GA24463@elte.hu>
Date:	Sat, 6 Oct 2007 13:08:35 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] Cute feature: colored printk output


* Jan Engelhardt <jengelh@...putergmbh.de> wrote:

> Colored kernel message output
> 
> Let's work more on Linux's cuteness! 
> [http://lkml.org/lkml/2007/10/4/431] The following patch makes it 
> possible to give kernel messages a selectable color which helps to 
> distinguish it from other noise, such as boot messages. NetBSD has it, 
> OpenBSD has it, FreeBSD to some extent, so I think Linux should too.
> 
> Inspired by cko (http://freshmeat.net/p/cko/), but independently
> written, later contributed forth and back.
> 
> Already posted at: http://lkml.org/lkml/2007/4/1/162
> 
> Signed-off-by: Jan Engelhardt <jengelh@....de>

looks really good to me!

Reviewed-by: Ingo Molnar <mingo@...e.hu>

small nit:

+       vc->vc_color = printk_color;
+       update_attr(vc);

that should be in a set_vc_color() function and the new code should do:

+	set_vc_color(vc, vc->vc_color);

(and same at the other places that call update_attr() as well)

feature request: would be interesting to have a color table (defined in 
the .config) dependent on message loglevel. That way KERN_CRIT messages 
could be red, KERN_INFO ones white, etc.

	Ingo
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