From: Andi Kleen <ak@muc.de>
To: Andrew Morton <akpm@osdl.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Put the BUG __FILE__ and __LINE__ info out of line
Date: 28 Sep 2006 09:17:31 +0200
Date: Thu, 28 Sep 2006 09:17:31 +0200 [thread overview]
Message-ID: <20060928071731.GB84041@muc.de> (raw)
In-Reply-To: <20060928000019.3fb4b317.akpm@osdl.org>
> Plan #17 is to just put the BUG inline and then put the EIP+file*+line into
> a separate section, then search that section at BUG time to find the record
> whose EIP points back at this ud2a.
>
> It's a bit messy for modules, but it minimises the .text impact and keeps
> disassembly happy, no?
>
> And if done right it can probably be used by other architectures.
The way x86-64 solved it was to turn the inline code into valid
instructions. This can be done with two additional bytes.
IMHO that's the right solution for the problem on i386 too
-Andi
next prev parent reply other threads:[~2006-09-28 7:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-28 6:00 [PATCH] Put the BUG __FILE__ and __LINE__ info out of line Jeremy Fitzhardinge
2006-09-28 6:35 ` Andrew Morton
2006-09-28 6:49 ` Jeremy Fitzhardinge
2006-09-28 7:00 ` Andrew Morton
2006-09-28 7:17 ` Andi Kleen [this message]
2006-09-28 7:26 ` Andrew Morton
2006-09-28 10:15 ` Andi Kleen
2006-09-28 10:30 ` Jeremy Fitzhardinge
2006-09-28 10:38 ` Andi Kleen
2006-09-28 15:30 ` Hugh Dickins
2006-09-28 19:44 ` Andi Kleen
2006-09-28 10:27 ` Jeremy Fitzhardinge
2006-09-28 16:18 ` Andrew Morton
2006-09-28 16:32 ` Jeremy Fitzhardinge
2006-09-28 7:16 ` Andi Kleen
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