diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/bitops_32.h | 2 | ||||
| -rw-r--r-- | include/linux/bitops.h | 34 | 
2 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-x86/bitops_32.h b/include/asm-x86/bitops_32.h index 3ed64b21b76..ba2c0defafa 100644 --- a/include/asm-x86/bitops_32.h +++ b/include/asm-x86/bitops_32.h @@ -5,6 +5,7 @@   * Copyright 1992, Linus Torvalds.   */ +#ifndef CONFIG_GENERIC_FIND_FIRST_BIT  /**   * find_first_zero_bit - find the first zero bit in a memory region   * @addr: The address to start the search at @@ -59,6 +60,7 @@ static inline unsigned find_first_bit(const unsigned long *addr, unsigned size)  	}  	return x;  } +#endif  #ifdef __KERNEL__ diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 3865f2c93bd..355d67ba3bd 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -113,6 +113,40 @@ static inline unsigned fls_long(unsigned long l)  }  #ifdef __KERNEL__ +#ifdef CONFIG_GENERIC_FIND_FIRST_BIT +extern unsigned long __find_first_bit(const unsigned long *addr, +		unsigned long size); + +/** + * 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. + */ +static __always_inline unsigned long +find_first_bit(const unsigned long *addr, unsigned long size) +{ +	return __find_first_bit(addr, size); +} + +extern unsigned long __find_first_zero_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. + */ +static __always_inline unsigned long +find_first_zero_bit(const unsigned long *addr, unsigned long size) +{ +	return __find_first_zero_bit(addr, size); +} +#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ +  #ifdef CONFIG_GENERIC_FIND_NEXT_BIT  extern unsigned long __find_next_bit(const unsigned long *addr,  		unsigned long size, unsigned long offset);  |