diff options
Diffstat (limited to 'lib/find_next_bit.c')
| -rw-r--r-- | lib/find_next_bit.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c index 24c59ded47a0..4bd75a73ba00 100644 --- a/lib/find_next_bit.c +++ b/lib/find_next_bit.c @@ -16,7 +16,7 @@ #define BITOP_WORD(nr) ((nr) / BITS_PER_LONG) -#ifdef CONFIG_GENERIC_FIND_NEXT_BIT +#ifndef find_next_bit /* * Find the next set bit in a memory region. */ @@ -59,7 +59,9 @@ found_middle: return result + __ffs(tmp); } EXPORT_SYMBOL(find_next_bit); +#endif +#ifndef find_next_zero_bit /* * This implementation of find_{first,next}_zero_bit was stolen from * Linus' asm-alpha/bitops.h. @@ -103,9 +105,9 @@ found_middle: return result + ffz(tmp); } EXPORT_SYMBOL(find_next_zero_bit); -#endif /* CONFIG_GENERIC_FIND_NEXT_BIT */ +#endif -#ifdef CONFIG_GENERIC_FIND_FIRST_BIT +#ifndef find_first_bit /* * Find the first set bit in a memory region. */ @@ -131,7 +133,9 @@ found: return result + __ffs(tmp); } EXPORT_SYMBOL(find_first_bit); +#endif +#ifndef find_first_zero_bit /* * Find the first cleared bit in a memory region. */ @@ -157,7 +161,7 @@ found: return result + ffz(tmp); } EXPORT_SYMBOL(find_first_zero_bit); -#endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ +#endif #ifdef __BIG_ENDIAN @@ -185,15 +189,17 @@ static inline unsigned long ext2_swab(const unsigned long y) #endif } -unsigned long generic_find_next_zero_le_bit(const unsigned long *addr, unsigned +#ifndef find_next_zero_bit_le +unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset) { - const unsigned long *p = addr + BITOP_WORD(offset); + const unsigned long *p = addr; unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; if (offset >= size) return size; + p += BITOP_WORD(offset); size -= result; offset &= (BITS_PER_LONG - 1UL); if (offset) { @@ -226,18 +232,20 @@ found_middle: found_middle_swap: return result + ffz(ext2_swab(tmp)); } +EXPORT_SYMBOL(find_next_zero_bit_le); +#endif -EXPORT_SYMBOL(generic_find_next_zero_le_bit); - -unsigned long generic_find_next_le_bit(const unsigned long *addr, unsigned +#ifndef find_next_bit_le +unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset) { - const unsigned long *p = addr + BITOP_WORD(offset); + const unsigned long *p = addr; unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; if (offset >= size) return size; + p += BITOP_WORD(offset); size -= result; offset &= (BITS_PER_LONG - 1UL); if (offset) { @@ -271,5 +279,7 @@ found_middle: found_middle_swap: return result + __ffs(ext2_swab(tmp)); } -EXPORT_SYMBOL(generic_find_next_le_bit); +EXPORT_SYMBOL(find_next_bit_le); +#endif + #endif /* __BIG_ENDIAN */ |