[PATCH] bitops: arm26: use generic bitops

- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove generic_fls()
- remove generic_fls64()
- remove generic_ffs()
- remove sched_find_first_bit()
- remove generic_hweight{32,16,8}()

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 14 insertions, 136 deletions

diff --git a/arch/arm26/Kconfig b/arch/arm26/Kconfig
index dee23d87fc5a..cf4ebf4c274d 100644
--- a/arch/arm26/Kconfig
+++ b/arch/arm26/Kconfig
@@ -41,6 +41,10 @@ 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-arm26/bitops.h b/include/asm-arm26/bitops.h
index d87f8634e625..19a69573a654 100644
--- a/include/asm-arm26/bitops.h
+++ b/include/asm-arm26/bitops.h
@@ -117,65 +117,7 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
         return res & mask;
 }
 
-/*
- * Now the non-atomic variants.  We let the compiler handle all
- * optimisations for these.  These are all _native_ endian.
- */
-static inline void __set_bit(int nr, volatile unsigned long *p)
-{
-        p[nr >> 5] |= (1UL << (nr & 31));
-}
-
-static inline void __clear_bit(int nr, volatile unsigned long *p)
-{
-        p[nr >> 5] &= ~(1UL << (nr & 31));
-}
-
-static inline void __change_bit(int nr, volatile unsigned long *p)
-{
-        p[nr >> 5] ^= (1UL << (nr & 31));
-}
-
-static inline int __test_and_set_bit(int nr, volatile unsigned long *p)
-{
-        unsigned long oldval, mask = 1UL << (nr & 31);
-
-        p += nr >> 5;
-
-        oldval = *p;
-        *p = oldval | mask;
-        return oldval & mask;
-}
-
-static inline int __test_and_clear_bit(int nr, volatile unsigned long *p)
-{
-        unsigned long oldval, mask = 1UL << (nr & 31);
-
-        p += nr >> 5;
-
-        oldval = *p;
-        *p = oldval & ~mask;
-        return oldval & mask;
-}
-
-static inline int __test_and_change_bit(int nr, volatile unsigned long *p)
-{
-        unsigned long oldval, mask = 1UL << (nr & 31);
-
-        p += nr >> 5;
-
-        oldval = *p;
-        *p = oldval ^ mask;
-        return oldval & mask;
-}
-
-/*
- * This routine doesn't need to be atomic.
- */
-static inline int __test_bit(int nr, const volatile unsigned long * p)
-{
-        return (p[nr >> 5] >> (nr & 31)) & 1UL;
-}
+#include <asm-generic/bitops/non-atomic.h>
 
 /*
  * Little endian assembly bitops.  nr = 0 -> byte 0 bit 0.
@@ -211,7 +153,6 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
 #define test_and_set_bit(nr,p)          ATOMIC_BITOP_LE(test_and_set_bit,nr,p)
 #define test_and_clear_bit(nr,p)        ATOMIC_BITOP_LE(test_and_clear_bit,nr,p)
 #define test_and_change_bit(nr,p)       ATOMIC_BITOP_LE(test_and_change_bit,nr,p)
-#define test_bit(nr,p)                  __test_bit(nr,p)
 #define find_first_zero_bit(p,sz)       _find_first_zero_bit_le(p,sz)
 #define find_next_zero_bit(p,sz,off)    _find_next_zero_bit_le(p,sz,off)
 #define find_first_bit(p,sz)            _find_first_bit_le(p,sz)
@@ -219,80 +160,13 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
 
 #define WORD_BITOFF_TO_LE(x)            ((x))
 
-/*
- * 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)
-{
-        int k;
-
-        word = ~word;
-        k = 31;
-        if (word & 0x0000ffff) { k -= 16; word <<= 16; }
-        if (word & 0x00ff0000) { k -= 8;  word <<= 8;  }
-        if (word & 0x0f000000) { k -= 4;  word <<= 4;  }
-        if (word & 0x30000000) { k -= 2;  word <<= 2;  }
-        if (word & 0x40000000) { k -= 1; }
-        return k;
-}
-
-/*
- * ffz = Find First Zero in word. Undefined if no zero exists,
- * so code should check against ~0UL first..
- */
-static inline unsigned long __ffs(unsigned long word)
-{
-        int k;
-
-        k = 31;
-        if (word & 0x0000ffff) { k -= 16; word <<= 16; }
-        if (word & 0x00ff0000) { k -= 8;  word <<= 8;  }
-        if (word & 0x0f000000) { k -= 4;  word <<= 4;  }
-        if (word & 0x30000000) { k -= 2;  word <<= 2;  }
-        if (word & 0x40000000) { k -= 1; }
-        return k;
-}
-
-/*
- * fls: find last bit set.
- */
-
-#define fls(x) generic_fls(x)
-#define fls64(x)   generic_fls64(x)
-
-/*
- * ffs: find first bit set. This is defined the same way as
- * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
- */
-
-#define ffs(x) generic_ffs(x)
-
-/*
- * Find first bit set in a 168-bit bitmap, where the first
- * 128 bits are unlikely to be set.
- */
-static inline int sched_find_first_bit(unsigned long *b)
-{
-        unsigned long v;
-        unsigned int off;
-
-        for (off = 0; v = b[off], off < 4; off++) {
-                if (unlikely(v))
-                        break;
-        }
-        return __ffs(v) + off * 32;
-}
-
-/*
- * 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/ffz.h>
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/hweight.h>
 
 /*
  * Ext2 is defined to use little-endian byte ordering.
@@ -307,7 +181,7 @@ static inline int sched_find_first_bit(unsigned long *b)
 #define ext2_clear_bit_atomic(lock,nr,p)        \
                 test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
 #define ext2_test_bit(nr,p)                     \
-                __test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
+                test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
 #define ext2_find_first_zero_bit(p,sz)          \
                 _find_first_zero_bit_le(p,sz)
 #define ext2_find_next_zero_bit(p,sz,off)       \
@@ -320,7 +194,7 @@ static inline int sched_find_first_bit(unsigned long *b)
 #define minix_set_bit(nr,p)                     \
                 __set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
 #define minix_test_bit(nr,p)                    \
-                __test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
+                test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
 #define minix_test_and_set_bit(nr,p)            \
                 __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
 #define minix_test_and_clear_bit(nr,p)          \