diff options
| -rw-r--r-- | include/asm-alpha/bitops.h | 5 | ||||
| -rw-r--r-- | include/asm-ia64/bitops.h | 16 | ||||
| -rw-r--r-- | include/asm-mips/bitops.h | 5 | ||||
| -rw-r--r-- | include/asm-parisc/bitops.h | 1 | ||||
| -rw-r--r-- | include/asm-powerpc/bitops.h | 5 | ||||
| -rw-r--r-- | include/asm-s390/bitops.h | 1 | ||||
| -rw-r--r-- | include/asm-sh/bitops.h | 1 | ||||
| -rw-r--r-- | include/asm-sparc64/bitops.h | 1 |
8 files changed, 35 insertions, 0 deletions
diff --git a/include/asm-alpha/bitops.h b/include/asm-alpha/bitops.h index 9e19a704d484..15f3ae25c511 100644 --- a/include/asm-alpha/bitops.h +++ b/include/asm-alpha/bitops.h @@ -388,6 +388,11 @@ static inline int fls64(unsigned long x) } #endif +static inline unsigned long __fls(unsigned long x) +{ + return fls64(x) - 1; +} + static inline int fls(int x) { return fls64((unsigned int) x); diff --git a/include/asm-ia64/bitops.h b/include/asm-ia64/bitops.h index 953d3df9dd22..e2ca80037335 100644 --- a/include/asm-ia64/bitops.h +++ b/include/asm-ia64/bitops.h @@ -407,6 +407,22 @@ fls (int t) return ia64_popcnt(x); } +/* + * Find the last (most significant) bit set. Undefined for x==0. + * Bits are numbered from 0..63 (e.g., __fls(9) == 3). + */ +static inline unsigned long +__fls (unsigned long x) +{ + x |= x >> 1; + x |= x >> 2; + x |= x >> 4; + x |= x >> 8; + x |= x >> 16; + x |= x >> 32; + return ia64_popcnt(x) - 1; +} + #include <asm-generic/bitops/fls64.h> /* diff --git a/include/asm-mips/bitops.h b/include/asm-mips/bitops.h index ec75ce4cdb8c..c2bd126c3b4e 100644 --- a/include/asm-mips/bitops.h +++ b/include/asm-mips/bitops.h @@ -591,6 +591,11 @@ static inline int __ilog2(unsigned long x) return 63 - lz; } +static inline unsigned long __fls(unsigned long x) +{ + return __ilog2(x); +} + #if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) /* diff --git a/include/asm-parisc/bitops.h b/include/asm-parisc/bitops.h index f8eebcbad01f..7a6ea10bd231 100644 --- a/include/asm-parisc/bitops.h +++ b/include/asm-parisc/bitops.h @@ -210,6 +210,7 @@ static __inline__ int fls(int x) return ret; } +#include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #include <asm-generic/bitops/hweight.h> #include <asm-generic/bitops/lock.h> diff --git a/include/asm-powerpc/bitops.h b/include/asm-powerpc/bitops.h index a99a74929475..897eade3afbe 100644 --- a/include/asm-powerpc/bitops.h +++ b/include/asm-powerpc/bitops.h @@ -313,6 +313,11 @@ static __inline__ int fls(unsigned int x) return 32 - lz; } +static __inline__ unsigned long __fls(unsigned long x) +{ + return __ilog2(x); +} + /* * 64-bit can do this using one cntlzd (count leading zeroes doubleword) * instruction; for 32-bit we use the generic version, which does two diff --git a/include/asm-s390/bitops.h b/include/asm-s390/bitops.h index 965394e69452..b4eb24ab5af9 100644 --- a/include/asm-s390/bitops.h +++ b/include/asm-s390/bitops.h @@ -769,6 +769,7 @@ static inline int sched_find_first_bit(unsigned long *b) } #include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #include <asm-generic/bitops/hweight.h> diff --git a/include/asm-sh/bitops.h b/include/asm-sh/bitops.h index b6ba5a60dec2..d7d382f63ee5 100644 --- a/include/asm-sh/bitops.h +++ b/include/asm-sh/bitops.h @@ -95,6 +95,7 @@ static inline unsigned long ffz(unsigned long word) #include <asm-generic/bitops/ext2-atomic.h> #include <asm-generic/bitops/minix.h> #include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #endif /* __KERNEL__ */ diff --git a/include/asm-sparc64/bitops.h b/include/asm-sparc64/bitops.h index 982ce8992b91..11f9d8146cdf 100644 --- a/include/asm-sparc64/bitops.h +++ b/include/asm-sparc64/bitops.h @@ -34,6 +34,7 @@ extern void change_bit(unsigned long nr, volatile unsigned long *addr); #include <asm-generic/bitops/ffz.h> #include <asm-generic/bitops/__ffs.h> #include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #ifdef __KERNEL__ |