diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2010-09-29 18:08:50 +0900 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-09 21:51:44 +0200 |
| commit | 708ff2a0097b02d32d375b66996661f36cd4d6d1 (patch) | |
| tree | 66f7922a1e35de1ad15ba84849bd6fc602c26087 /include/linux/bitops.h | |
| parent | c24cef0b68a719324c344c1563ef3d750ac6bf0e (diff) | |
bitops: make asm-generic/bitops/find.h more generic
asm-generic/bitops/find.h has the extern declarations of find_next_bit()
and find_next_zero_bit() and the macro definitions of find_first_bit()
and find_first_zero_bit(). It is only usable by the architectures which
enables CONFIG_GENERIC_FIND_NEXT_BIT and disables
CONFIG_GENERIC_FIND_FIRST_BIT.
x86 and tile enable both CONFIG_GENERIC_FIND_NEXT_BIT and
CONFIG_GENERIC_FIND_FIRST_BIT. These architectures cannot include
asm-generic/bitops/find.h in their asm/bitops.h. So ifdefed extern
declarations of find_first_bit and find_first_zero_bit() are put in
linux/bitops.h.
This makes asm-generic/bitops/find.h usable by these architectures
and use it. Also this change is needed for the forthcoming duplicated
extern declarations cleanup.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index fc68053378ce..adb0f113f571 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -136,28 +136,6 @@ static inline unsigned long __ffs64(u64 word) } #ifdef __KERNEL__ -#ifdef CONFIG_GENERIC_FIND_FIRST_BIT - -/** - * find_first_bit - find the first set bit in a memory region - * @addr: The address to start the search at - * @size: The maximum size to search - * - * Returns the bit number of the first set bit. - */ -extern unsigned long find_first_bit(const unsigned long *addr, - unsigned long size); - -/** - * find_first_zero_bit - find the first cleared bit in a memory region - * @addr: The address to start the search at - * @size: The maximum size to search - * - * Returns the bit number of the first cleared bit. - */ -extern unsigned long find_first_zero_bit(const unsigned long *addr, - unsigned long size); -#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ #ifdef CONFIG_GENERIC_FIND_LAST_BIT /** |