[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>

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 */