From: Alexander van Heukelum <heukelum@mailshack.com>
Date: Tue, 1 Apr 2008 15:42:21 +0000 (+0200)
Subject: x86: optimize find_first_bit for small bitmaps
X-Git-Tag: v2.6.26-rc1~1037^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a48305028aa38afba93fc05066c71a6ee668ad8;p=pandora-kernel.git

x86: optimize find_first_bit for small bitmaps

Avoid a call to find_first_bit if the bitmap size is know at
compile time and small enough to fit in a single long integer.
Modeled after an optimization in the original x86_64-specific
code.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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