linux-kernel - Re: [PATCH] kallsyms: fix potential overflow in binary search

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Message-ID: <84144f020805140522m6136ff69w7ffa6f9c9248706f@mail.gmail.com>
Date:	Wed, 14 May 2008 15:22:00 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Paulo Marques" <pmarques@...popie.com>
Cc:	"Vegard Nossum" <vegard.nossum@...il.com>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kallsyms: fix potential overflow in binary search

On Wed, May 14, 2008 at 2:44 PM, Paulo Marques <pmarques@...popie.com> wrote:
> > This will probably never trigger... but it won't hurt to be careful.
>
>  Not "probably", this will never trigger _period_. If you ever have more
> than 2^31 symbols in the kernel's kallsyms table you'll have worse problems
> to worry about than the binary search overflowing.
>
>  So, I don't think it is worth this des-optimization at all...

Yes it is. It serves as correct reference code and the
"deoptimization" is not measurable.
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