linux-kernel - Re: "Re: [PATCH 0/2] Colored kernel output (run2)" + "`Subject:' usage"

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Message-ID: <470F7391.30800@tmr.com>
Date:	Fri, 12 Oct 2007 09:16:01 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Oleg Verych <olecom@...wer.upol.cz>
CC:	Ingo Molnar <mingo@...e.hu>,
	Jan Engelhardt <jengelh@...putergmbh.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	Medve Emilian-EMMEDVE1 <Emilian.Medve@...escale.com>,
	Helge Deller <deller@....de>
Subject: Re: "Re: [PATCH 0/2] Colored kernel output (run2)" + "`Subject:'
 usage"

Oleg Verych wrote:
> Hallo, Ingo.
> 
> On Sun, Oct 07, 2007 at 08:07:07AM +0200, Ingo Molnar wrote:

> 
> To clarify. `Scrollback' here is *useful* scrollback during early boot
> and OOPs (which is absent, AFAIK), "nothing like that" is coloring of the
> messages by loglevel.
> 
>> even if it were true (which it isnt), that is not an argument against 
>> including a useful change that exists now and that people are interested 
>> in.
> 
> Coloring isn't useful. If it was, it would be implemented ~16 years ago.

So anything that wasn't implemented a decade ago is not useful? Virtual 
machines, software raid, fair scheduling, jumbo packets, SMT/SMP/NUMA 
support, support for >4GB physical memory on x86, all fluff?
> 
>> (and yes, i have implemented kernel console improvements in the past 
>> and vga scrollback support was in fact amongst one of my first ever 
>> Linux kernel hacks so your comment is doubly wrong.)
> 
> This `scrollback' is usual late boot / console one. If fact useful,
> until first tty switch or if `screen` cannot be used. But for some
> reason if scrolling region (DECSTBM) is less than whole screen, nothing
> works. And if width set to odd number of columns
> 
> `stty columns $((80-1))`
> 
> whole output becomes somewhat funny.

I think by the time you get up enough to be running ill-advised commands 
from shell, you are past "early boot." Your comments about scrollback 
not working right if you break it are hopefully an attempt at humor.

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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