From: Alexander van Heukelum <heukelum@mailshack.com>
Date: Fri, 25 Apr 2008 11:12:53 +0000 (+0200)
Subject: x86, bitops: select the generic bitmap search functions
X-Git-Tag: v2.6.26-rc1~1037^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19870def587554c4055df3e74a21508e3647fb7e;p=pandora-kernel.git

x86, bitops: select the generic bitmap search functions

Introduce GENERIC_FIND_FIRST_BIT and GENERIC_FIND_NEXT_BIT in
lib/Kconfig, defaulting to off. An arch that wants to use the
generic implementation now only has to use a select statement
to include them.

I added an always-y option (X86_CPU) to arch/x86/Kconfig.cpu
and used that to select the generic search functions. This
way ARCH=um SUBARCH=i386 automatically picks up the change
too, and arch/um/Kconfig.i386 can therefore be simplified a
bit. ARCH=um SUBARCH=x86_64 does things differently, but
still compiles fine. It seems that a "def_bool y" always
wins over a "def_bool n"?

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