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| author | Alexander van Heukelum <heukelum@mailshack.com> | 2008-04-25 13:12:53 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-26 19:21:17 +0200 |
| commit | 19870def587554c4055df3e74a21508e3647fb7e (patch) | |
| tree | d1c483a58e0ec684b8e3678a906dc115ffee5006 | |
| parent | f19dcf4a61ea4a3d155acb239348d09cb264f6a0 (diff) | |
| download | linux-3.10-19870def587554c4055df3e74a21508e3647fb7e.tar.gz linux-3.10-19870def587554c4055df3e74a21508e3647fb7e.tar.bz2 linux-3.10-19870def587554c4055df3e74a21508e3647fb7e.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>
| -rw-r--r-- | arch/um/Kconfig.i386 | 8 | ||||
| -rw-r--r-- | arch/um/Kconfig.x86_64 | 8 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 6 | ||||
| -rw-r--r-- | arch/x86/Kconfig.cpu | 5 | ||||
| -rw-r--r-- | lib/Kconfig | 6 |
5 files changed, 11 insertions, 22 deletions
diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386 index 49990ea422e..e09edfa560d 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 cc42e59585d..5696e7b374b 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 700447738e7..2fadf794483 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 cf3ff2c5cef..7ef18b01f0b 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 diff --git a/lib/Kconfig b/lib/Kconfig index 2d53dc092e8..8cc8e8722a3 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 |