linux-kernel - Re: [PATCH 0/5] Preliminary: Add error names & descrptions to printks

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Date:	Wed, 18 Sep 2013 17:47:53 -0500
From:	Daniel Santos <danielfsantos@....net>
To:	David Howells <dhowells@...hat.com>
CC:	linux-kbuild <linux-kbuild@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Michal Marek <mmarek@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	George Spelvin <linux@...izon.com>
Subject: Re: [PATCH 0/5] Preliminary: Add error names & descrptions to printks


On 09/18/2013 06:08 AM, David Howells wrote:
> danielfsantos@....net wrote:
>
>> Typically, we don't care about error messages or names in the kernel because
>> userspace will manage that.  But sometimes we need to output an error number
>> to printks and that creates a situation where a user, system admistrator or
>> developer must find an error number reference to figure out what went wrong
>> with a particular driver or whatever.  This patch adds two alternatives at
>> increasing memory costs:
>>
>> 1. print the number in addition to the name for 2k extra or
>> 2. print the number, name and description for 6k extra.
> I like the idea generally - and have occasionally entertained the idea of
> implementing it myself.  However, I wouldn't bother with the "human readable"
> description if we're going to do this.  Generally, the symbolic representation
> is good enough - and that's what you're going to grep the code for anyway.
>
> David

Yeah, I thought about that too, but I figured that descriptions were 
already there so I may as well make it an option for the 
search-engine-impared. :)  I was also thinking about system 
administrators and ordinary users trying to installing device drivers 
and other such situations where they would have to look at their syslogs 
or dmesg -- or just the lazy. :)

Daniel
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