diff options
| author | Alexander van Heukelum <heukelum@mailshack.com> | 2008-04-01 11:46:19 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-26 19:21:16 +0200 |
| commit | 77b9bd9c49442407804c37bcc82021a35277f83c (patch) | |
| tree | 251900d95c6c9c5371542d5dda7d89cb31cd0801 /arch/x86 | |
| parent | d57594c203b1e7b54373080a797f0cbfa4aade68 (diff) | |
x86: generic versions of find_first_(zero_)bit, convert i386
Generic versions of __find_first_bit and __find_first_zero_bit
are introduced as simplified versions of __find_next_bit and
__find_next_zero_bit. Their compilation and use are guarded by
a new config variable GENERIC_FIND_FIRST_BIT.
The generic versions of find_first_bit and find_first_zero_bit
are implemented in terms of the newly introduced __find_first_bit
and __find_first_zero_bit.
This patch does not remove the i386-specific implementation,
but it does switch i386 to use the generic functions by setting
GENERIC_FIND_FIRST_BIT=y for X86_32.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5639de47ed4..1a69b68ff6c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -77,6 +77,9 @@ config GENERIC_BUG def_bool y depends on BUG +config GENERIC_FIND_FIRST_BIT + def_bool X86_32 + config GENERIC_FIND_NEXT_BIT def_bool y |