From: Uros Bizjak <ubizjak@gmail.com>
Date: Fri, 24 Oct 2008 14:53:33 +0000 (+0200)
Subject: x86: Implement change_bit with immediate operand as "lock xorb"
X-Git-Tag: v2.6.29-rc1~536^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=838e8bb71dc0c892bf8f84abd3c709d8fe3a8d3c;p=pandora-kernel.git

x86: Implement change_bit with immediate operand as "lock xorb"

Impact: Minor optimization.

Implement change_bit with immediate bit count as "lock xorb". This is
similar to  "lock orb" and "lock andb"  for set_bit and clear_bit
functions.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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