linux-kernel - Re: [patch 1/2] move WARN

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Date:	Fri, 4 Jan 2008 08:41:49 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	olof@...om.net, mpm@...enic.com
Subject: Re: [patch 1/2] move WARN_ON() out of line


* Arjan van de Ven <arjan@...ux.intel.com> wrote:

> This patch build on top of Olof's patch that introduces __WARN, and 
> places the slowpath out of line. It also uses Ingo's suggestion to not 
> use __FUNCTION__ but to use kallsyms to do the lookup; this saves a 
> ton of extra space since gcc doesn't need to store the function string 
> twice now:
>
> 3936367  833603  624736 5394706  525112 vmlinux.before
> 3917508  833603  624736 5375847  520767 vmlinux-slowpath
>
> 15Kb savings...

hey, cool!

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

i'm wondering how we could put this into x86.git to get it tested some 
more. Olof's patch touches other architectures so it's not really 
appropriate. Maybe a portion of Olof's patch could be applied to make 
your patch apply cleanly?

	Ingo
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