[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>

diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 8849439..805b81f 100644 (file)
--- 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 b7955b3..e845daa 100644 (file)
--- 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 */