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authorAlexander van Heukelum <heukelum@mailshack.com>2008-04-25 15:12:53 +0400
committerIngo Molnar <mingo@elte.hu>2008-04-26 21:21:17 +0400
commit19870def587554c4055df3e74a21508e3647fb7e (patch)
treed1c483a58e0ec684b8e3678a906dc115ffee5006 /lib/Kconfig
parentf19dcf4a61ea4a3d155acb239348d09cb264f6a0 (diff)
downloadlinux-19870def587554c4055df3e74a21508e3647fb7e.tar.xz
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>
Diffstat (limited to 'lib/Kconfig')
-rw-r--r--lib/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 2d53dc092e8b..8cc8e8722a3f 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -7,6 +7,12 @@ menu "Library routines"
config BITREVERSE
tristate
+config GENERIC_FIND_FIRST_BIT
+ def_bool n
+
+config GENERIC_FIND_NEXT_BIT
+ def_bool n
+
config CRC_CCITT
tristate "CRC-CCITT functions"
help