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    Subject[patch 24/47] h8300: use generic bitops
    - remove generic_ffs()
    - remove find_{next,first}{,_zero}_bit()
    - remove sched_find_first_bit()
    - remove generic_hweight{32,16,8}()
    - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
    - remove ext2_{set,clear}_bit_atomic()
    - 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>
    arch/h8300/Kconfig | 8 +
    include/asm-h8300/bitops.h | 222 +--------------------------------------------
    2 files changed, 17 insertions(+), 213 deletions(-)

    Index: 2.6-rc/include/asm-h8300/bitops.h
    ===================================================================
    --- 2.6-rc.orig/include/asm-h8300/bitops.h
    +++ 2.6-rc/include/asm-h8300/bitops.h
    @@ -8,7 +8,6 @@

    #include <linux/config.h>
    #include <linux/compiler.h>
    -#include <asm/byteorder.h> /* swab32 */
    #include <asm/system.h>

    #ifdef __KERNEL__
    @@ -177,10 +176,7 @@ H8300_GEN_TEST_BITOP(test_and_change_bit
    #undef H8300_GEN_TEST_BITOP_CONST_INT
    #undef H8300_GEN_TEST_BITOP

    -#define find_first_zero_bit(addr, size) \
    - find_next_zero_bit((addr), (size), 0)
    -
    -#define ffs(x) generic_ffs(x)
    +#include <asm-generic/bitops/ffs.h>

    static __inline__ unsigned long __ffs(unsigned long word)
    {
    @@ -196,216 +192,16 @@ static __inline__ unsigned long __ffs(un
    return result;
    }

    -static __inline__ int find_next_zero_bit (const unsigned long * addr, int size, int offset)
    -{
    - unsigned long *p = (unsigned long *)(((unsigned long)addr + (offset >> 3)) & ~3);
    - 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);
    -}
    -
    -static __inline__ unsigned long find_next_bit(const unsigned long *addr,
    - unsigned long size, unsigned long offset)
    -{
    - unsigned long *p = (unsigned long *)(((unsigned long)addr + (offset >> 3)) & ~3);
    - 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)
    - return result + size;
    -found_middle:
    - return result + __ffs(tmp);
    -}
    -
    -#define find_first_bit(addr, size) find_next_bit(addr, size, 0)
    -
    -/*
    - * 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;
    -}
    -
    -/*
    - * 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)
    -
    -static __inline__ int ext2_set_bit(int nr, volatile void * addr)
    -{
    - int mask, retval;
    - unsigned long flags;
    - volatile unsigned char *ADDR = (unsigned char *) addr;
    -
    - ADDR += nr >> 3;
    - mask = 1 << (nr & 0x07);
    - local_irq_save(flags);
    - retval = (mask & *ADDR) != 0;
    - *ADDR |= mask;
    - local_irq_restore(flags);
    - return retval;
    -}
    -#define ext2_set_bit_atomic(lock, nr, addr) ext2_set_bit(nr, addr)
    -
    -static __inline__ int ext2_clear_bit(int nr, volatile void * addr)
    -{
    - int mask, retval;
    - unsigned long flags;
    - volatile unsigned char *ADDR = (unsigned char *) addr;
    -
    - ADDR += nr >> 3;
    - mask = 1 << (nr & 0x07);
    - local_irq_save(flags);
    - retval = (mask & *ADDR) != 0;
    - *ADDR &= ~mask;
    - local_irq_restore(flags);
    - return retval;
    -}
    -#define ext2_clear_bit_atomic(lock, nr, addr) ext2_set_bit(nr, addr)
    -
    -static __inline__ int ext2_test_bit(int nr, const volatile void * addr)
    -{
    - int mask;
    - const volatile unsigned char *ADDR = (const unsigned char *) addr;
    -
    - ADDR += nr >> 3;
    - mask = 1 << (nr & 0x07);
    - return ((mask & *ADDR) != 0);
    -}
    -
    -#define ext2_find_first_zero_bit(addr, size) \
    - ext2_find_next_zero_bit((addr), (size), 0)
    -
    -static __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned long size, unsigned long 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) {
    - /* We hold the little endian value in tmp, but then the
    - * shift is illegal. So we could keep a big endian value
    - * in tmp, like this:
    - *
    - * tmp = __swab32(*(p++));
    - * tmp |= ~0UL >> (32-offset);
    - *
    - * but this would decrease performance, so we change the
    - * shift:
    - */
    - tmp = *(p++);
    - tmp |= __swab32(~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 is little endian, so we would have to swab the shift,
    - * see above. But then we have to swab tmp below for ffz, so
    - * we might as well do this here.
    - */
    - return result + ffz(__swab32(tmp) | (~0UL << size));
    -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)
    +#include <asm-generic/bitops/find.h>
    +#include <asm-generic/bitops/sched.h>
    +#include <asm-generic/bitops/hweight.h>
    +#include <asm-generic/bitops/ext2-non-atomic.h>
    +#include <asm-generic/bitops/ext2-atomic.h>
    +#include <asm-generic/bitops/minix.h>

    #endif /* __KERNEL__ */

    -#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 /* _H8300_BITOPS_H */
    Index: 2.6-rc/arch/h8300/Kconfig
    ===================================================================
    --- 2.6-rc.orig/arch/h8300/Kconfig
    +++ 2.6-rc/arch/h8300/Kconfig
    @@ -29,6 +29,14 @@ 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
    --
    -
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