linux-kernel - Re: [PATCH RFC 1/5] scripts: Add sortextable to sort the kernel's exception table.

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Message-ID: <4EC98CF5.3070500@kernel.org>
Date:	Sun, 20 Nov 2011 15:27:49 -0800
From:	"H. Peter Anvin" <hpa@...nel.org>
To:	David Daney <ddaney.cavm@...il.com>
CC:	linux-mips@...ux-mips.org, ralf@...ux-mips.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-embedded@...r.kernel.org, x86@...nel.org,
	David Daney <david.daney@...ium.com>
Subject: Re: [PATCH RFC 1/5] scripts: Add sortextable to sort the kernel's
 exception table.

On 11/20/2011 03:26 PM, H. Peter Anvin wrote:
> On 11/18/2011 11:37 AM, David Daney wrote:
>> From: David Daney <david.daney@...ium.com>
>>
>> Using this build-time sort saves time booting as we don't have to burn
>> cycles sorting the exception table.
>>
> 
> If we're going to do this at build time, I would suggest using a
> collisionless hash instead.  The lookup time for those are O(1), but
> they definitely need to be done at build time.
> 

I have some code for generating these kinds of tables, they just need to
be hooked up.  I will dig it up later today or tomorrow.

	-hpa

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