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author | Akinobu Mita <mita@miraclelinux.com> | 2006-03-26 01:39:27 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-26 08:57:12 -0800 |
commit | ba1a5b32ba5e2fcb53b6943b8c9c33694ac68ce5 (patch) | |
tree | c2ee7ebfd46a7c94e6e7993fc34c21159b973b18 | |
parent | 6d9f937b559d664b6f222cb91eca9c6802bfe89a (diff) | |
download | linux-stable-ba1a5b32ba5e2fcb53b6943b8c9c33694ac68ce5.tar.gz linux-stable-ba1a5b32ba5e2fcb53b6943b8c9c33694ac68ce5.tar.bz2 linux-stable-ba1a5b32ba5e2fcb53b6943b8c9c33694ac68ce5.zip |
[PATCH] bitops: m68k: use generic bitops
- remove generic_fls64()
- remove sched_find_first_bit()
- remove generic_hweight()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r-- | arch/m68k/Kconfig | 4 | ||||
-rw-r--r-- | include/asm-m68k/bitops.h | 86 |
2 files changed, 9 insertions, 81 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 8849439e88dd..805b81fedf80 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -17,6 +17,10 @@ config RWSEM_GENERIC_SPINLOCK config RWSEM_XCHGADD_ALGORITHM bool +config GENERIC_HWEIGHT + bool + default y + config GENERIC_CALIBRATE_DELAY bool default y diff --git a/include/asm-m68k/bitops.h b/include/asm-m68k/bitops.h index b7955b39d963..e845daac48ad 100644 --- a/include/asm-m68k/bitops.h +++ b/include/asm-m68k/bitops.h @@ -310,36 +310,10 @@ static inline int fls(int x) return 32 - cnt; } -#define fls64(x) generic_fls64(x) - -/* - * Every architecture must define this function. It's the fastest - * way of searching a 140-bit bitmap where the first 100 bits are - * unlikely to be set. It's guaranteed that at least one of the 140 - * bits is cleared. - */ -static inline int sched_find_first_bit(const unsigned long *b) -{ - if (unlikely(b[0])) - return __ffs(b[0]); - if (unlikely(b[1])) - return __ffs(b[1]) + 32; - if (unlikely(b[2])) - return __ffs(b[2]) + 64; - if (b[3]) - return __ffs(b[3]) + 96; - return __ffs(b[4]) + 128; -} - -/* - * hweightN: returns the hamming weight (i.e. the number - * of bits set) of a N-bit word - */ - -#define hweight32(x) generic_hweight32(x) -#define hweight16(x) generic_hweight16(x) -#define hweight8(x) generic_hweight8(x) +#include <asm-generic/bitops/fls64.h> +#include <asm-generic/bitops/sched.h> +#include <asm-generic/bitops/hweight.h> /* Bitmap functions for the minix filesystem */ @@ -377,61 +351,11 @@ static inline int minix_test_bit(int nr, const void *vaddr) /* Bitmap functions for the ext2 filesystem. */ -#define ext2_set_bit(nr, addr) __test_and_set_bit((nr) ^ 24, (unsigned long *)(addr)) +#include <asm-generic/bitops/ext2-non-atomic.h> + #define ext2_set_bit_atomic(lock, nr, addr) test_and_set_bit((nr) ^ 24, (unsigned long *)(addr)) -#define ext2_clear_bit(nr, addr) __test_and_clear_bit((nr) ^ 24, (unsigned long *)(addr)) #define ext2_clear_bit_atomic(lock, nr, addr) test_and_clear_bit((nr) ^ 24, (unsigned long *)(addr)) -static inline int ext2_test_bit(int nr, const void *vaddr) -{ - const unsigned char *p = vaddr; - return (p[nr >> 3] & (1U << (nr & 7))) != 0; -} - -static inline int ext2_find_first_zero_bit(const void *vaddr, unsigned size) -{ - const unsigned long *p = vaddr, *addr = vaddr; - int res; - - if (!size) - return 0; - - size = (size >> 5) + ((size & 31) > 0); - while (*p++ == ~0UL) - { - if (--size == 0) - return (p - addr) << 5; - } - - --p; - for (res = 0; res < 32; res++) - if (!ext2_test_bit (res, p)) - break; - return (p - addr) * 32 + res; -} - -static inline int ext2_find_next_zero_bit(const void *vaddr, unsigned size, - unsigned offset) -{ - const unsigned long *addr = vaddr; - const unsigned long *p = addr + (offset >> 5); - int bit = offset & 31UL, res; - - if (offset >= size) - return size; - - if (bit) { - /* Look for zero in first longword */ - for (res = bit; res < 32; res++) - if (!ext2_test_bit (res, p)) - return (p - addr) * 32 + res; - p++; - } - /* No zero yet, search remaining full bytes for a zero */ - res = ext2_find_first_zero_bit (p, size - 32 * (p - addr)); - return (p - addr) * 32 + res; -} - #endif /* __KERNEL__ */ #endif /* _M68K_BITOPS_H */ |