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authorAlexander van Heukelum <heukelum@mailshack.com>2008-04-25 13:12:53 +0200
committerIngo Molnar <mingo@elte.hu>2008-04-26 19:21:17 +0200
commit19870def587554c4055df3e74a21508e3647fb7e (patch)
treed1c483a58e0ec684b8e3678a906dc115ffee5006 /arch
parentx86: include/asm-x86/pgalloc.h/bitops.h: checkpatch cleanups - formatting only (diff)
downloadlinux-dev-19870def587554c4055df3e74a21508e3647fb7e.tar.xz
linux-dev-19870def587554c4055df3e74a21508e3647fb7e.zip
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 '')
-rw-r--r--arch/um/Kconfig.i3868
-rw-r--r--arch/um/Kconfig.x86_648
-rw-r--r--arch/x86/Kconfig6
-rw-r--r--arch/x86/Kconfig.cpu5
4 files changed, 5 insertions, 22 deletions
diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index 49990ea422e4..e09edfa560da 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -39,14 +39,6 @@ config ARCH_REUSE_HOST_VSYSCALL_AREA
bool
default y
-config GENERIC_FIND_FIRST_BIT
- bool
- default y
-
-config GENERIC_FIND_NEXT_BIT
- bool
- default y
-
config GENERIC_HWEIGHT
bool
default y
diff --git a/arch/um/Kconfig.x86_64 b/arch/um/Kconfig.x86_64
index cc42e59585d2..5696e7b374b3 100644
--- a/arch/um/Kconfig.x86_64
+++ b/arch/um/Kconfig.x86_64
@@ -34,14 +34,6 @@ config SMP_BROKEN
bool
default y
-config GENERIC_FIND_FIRST_BIT
- bool
- default y
-
-config GENERIC_FIND_NEXT_BIT
- bool
- default y
-
config GENERIC_HWEIGHT
bool
default y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 700447738e73..2fadf794483d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -77,12 +77,6 @@ config GENERIC_BUG
def_bool y
depends on BUG
-config GENERIC_FIND_FIRST_BIT
- def_bool y
-
-config GENERIC_FIND_NEXT_BIT
- def_bool y
-
config GENERIC_HWEIGHT
def_bool y
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index cf3ff2c5cef2..7ef18b01f0bc 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -278,6 +278,11 @@ config GENERIC_CPU
endchoice
+config X86_CPU
+ def_bool y
+ select GENERIC_FIND_FIRST_BIT
+ select GENERIC_FIND_NEXT_BIT
+
config X86_GENERIC
bool "Generic x86 support"
depends on X86_32