Re: [PATCH] Put the BUG __FILE__ and __LINE__ info out of line
From: Andrew Morton
Date: Thu Sep 28 2006 - 03:26:47 EST
On 28 Sep 2006 09:17:31 +0200
Andi Kleen <ak@xxxxxx> wrote:
> > 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
That uses even more text.
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