[PATCH] bitops: m68knommu: use generic bitops

- remove ffs()
- remove __ffs()
- remove sched_find_first_bit()
- remove ffz()
- remove find_{next,first}{,_zero}_bit()
- remove generic_hweight()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
- remove generic_fls()
- remove generic_fls64()

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 17 insertions, 212 deletions

diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index e50858dbc237..3cde6822ead1 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -25,6 +25,14 @@ config RWSEM_XCHGADD_ALGORITHM
         bool
         default n
 
+config GENERIC_FIND_NEXT_BIT
+        bool
+        default y
+
+config GENERIC_HWEIGHT
+        bool
+        default y
+
 config GENERIC_CALIBRATE_DELAY
         bool
         default y
diff --git a/include/asm-m68knommu/bitops.h b/include/asm-m68knommu/bitops.h
index 00c4a2548e60..0b68ccd327f7 100644
--- a/include/asm-m68knommu/bitops.h
+++ b/include/asm-m68knommu/bitops.h
@@ -12,104 +12,10 @@
 
 #ifdef __KERNEL__
 
-/*
- *      Generic ffs().
- */
-static inline int ffs(int x)
-{
-        int r = 1;
-
-        if (!x)
-                return 0;
-        if (!(x & 0xffff)) {
-                x >>= 16;
-                r += 16;
-        }
-        if (!(x & 0xff)) {
-                x >>= 8;
-                r += 8;
-        }
-        if (!(x & 0xf)) {
-                x >>= 4;
-                r += 4;
-        }
-        if (!(x & 3)) {
-                x >>= 2;
-                r += 2;
-        }
-        if (!(x & 1)) {
-                x >>= 1;
-                r += 1;
-        }
-        return r;
-}
-
-/*
- *      Generic __ffs().
- */
-static inline int __ffs(int x)
-{
-        int r = 0;
-
-        if (!x)
-                return 0;
-        if (!(x & 0xffff)) {
-                x >>= 16;
-                r += 16;
-        }
-        if (!(x & 0xff)) {
-                x >>= 8;
-                r += 8;
-        }
-        if (!(x & 0xf)) {
-                x >>= 4;
-                r += 4;
-        }
-        if (!(x & 3)) {
-                x >>= 2;
-                r += 2;
-        }
-        if (!(x & 1)) {
-                x >>= 1;
-                r += 1;
-        }
-        return r;
-}
-
-/*
- * 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(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;
-}
-
-/*
- * ffz = Find First Zero in word. Undefined if no zero exists,
- * so code should check against ~0UL first..
- */
-static __inline__ unsigned long ffz(unsigned long word)
-{
-        unsigned long result = 0;
-
-        while(word & 1) {
-                result++;
-                word >>= 1;
-        }
-        return result;
-}
-
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ffz.h>
 
 static __inline__ void set_bit(int nr, volatile unsigned long * addr)
 {
@@ -254,98 +160,8 @@ static __inline__ int __test_bit(int nr, const volatile unsigned long * addr)
  __constant_test_bit((nr),(addr)) : \
  __test_bit((nr),(addr)))
 
-#define find_first_zero_bit(addr, size) \
-        find_next_zero_bit((addr), (size), 0)
-#define find_first_bit(addr, size) \
-        find_next_bit((addr), (size), 0)
-
-static __inline__ int find_next_zero_bit (const void * addr, int size, int offset)
-{
-        unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
-        unsigned long result = offset & ~31UL;
-        unsigned long tmp;
-
-        if (offset >= size)
-                return size;
-        size -= result;
-        offset &= 31UL;
-        if (offset) {
-                tmp = *(p++);
-                tmp |= ~0UL >> (32-offset);
-                if (size < 32)
-                        goto found_first;
-                if (~tmp)
-                        goto found_middle;
-                size -= 32;
-                result += 32;
-        }
-        while (size & ~31UL) {
-                if (~(tmp = *(p++)))
-                        goto found_middle;
-                result += 32;
-                size -= 32;
-        }
-        if (!size)
-                return result;
-        tmp = *p;
-
-found_first:
-        tmp |= ~0UL << size;
-found_middle:
-        return result + ffz(tmp);
-}
-
-/*
- * Find next one bit in a bitmap reasonably efficiently.
- */
-static __inline__ unsigned long find_next_bit(const unsigned long *addr,
-        unsigned long size, unsigned long offset)
-{
-        unsigned int *p = ((unsigned int *) addr) + (offset >> 5);
-        unsigned int result = offset & ~31UL;
-        unsigned int tmp;
-
-        if (offset >= size)
-                return size;
-        size -= result;
-        offset &= 31UL;
-        if (offset) {
-                tmp = *p++;
-                tmp &= ~0UL << offset;
-                if (size < 32)
-                        goto found_first;
-                if (tmp)
-                        goto found_middle;
-                size -= 32;
-                result += 32;
-        }
-        while (size >= 32) {
-                if ((tmp = *p++) != 0)
-                        goto found_middle;
-                result += 32;
-                size -= 32;
-        }
-        if (!size)
-                return result;
-        tmp = *p;
-
-found_first:
-        tmp &= ~0UL >> (32 - size);
-        if (tmp == 0UL)        /* Are any bits set? */
-                return result + size; /* Nope. */
-found_middle:
-        return result + __ffs(tmp);
-}
-
-/*
- * 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/find.h>
+#include <asm-generic/bitops/hweight.h>
 
 static __inline__ int ext2_set_bit(int nr, volatile void * addr)
 {
@@ -475,30 +291,11 @@ found_middle:
         return result + ffz(__swab32(tmp));
 }
 
-/* Bitmap functions for the minix filesystem.  */
-#define minix_test_and_set_bit(nr,addr) __test_and_set_bit(nr,addr)
-#define minix_set_bit(nr,addr) __set_bit(nr,addr)
-#define minix_test_and_clear_bit(nr,addr) __test_and_clear_bit(nr,addr)
-#define minix_test_bit(nr,addr) test_bit(nr,addr)
-#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)
-
-/**
- * hweightN - returns the hamming weight of a N-bit word
- * @x: the word to weigh
- *
- * The Hamming Weight of a number is the total number of bits set in it.
- */
-
-#define hweight32(x) generic_hweight32(x)
-#define hweight16(x) generic_hweight16(x)
-#define hweight8(x) generic_hweight8(x)
+#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
-/*
- * fls: find last bit set.
- */
-#define fls(x) generic_fls(x)
-#define fls64(x)   generic_fls64(x)
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/fls64.h>
 
 #endif /* _M68KNOMMU_BITOPS_H */