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From: Frans Pop <elendil@planet.nl>
To: Henk Martijn <h.h.martijn@gmail.com>
Subject: Re: [bisected] boot speed regression in current git
Date: Fri, 7 Aug 2009 12:54:19 +0200
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> I bisected this to "net: restore the original spinlock to protect
> unicast list" commit: a6ac65db2329e7685299666f5f7b6093c7b0f3a0
> reverting this commit gives me back 20 s in boot time.

Try adding this patch from Ingo. It will probably fix the issue:
http://marc.info/?l=linux-kernel&m=124945666109347&w=2

Cheers,
FJP