[PATCH] bitops: 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>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Akinobu Mita
Linus Torvalds
parent
1f6d7a93c1
commit
f6e0213f7c
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@ -29,6 +29,14 @@ config RWSEM_XCHGADD_ALGORITHM
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bool
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default n
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config GENERIC_FIND_NEXT_BIT
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bool
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default y
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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@ -8,7 +8,6 @@
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#include <linux/config.h>
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#include <linux/compiler.h>
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#include <asm/byteorder.h> /* swab32 */
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#include <asm/system.h>
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#ifdef __KERNEL__
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@ -177,10 +176,7 @@ H8300_GEN_TEST_BITOP(test_and_change_bit,"bnot")
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#undef H8300_GEN_TEST_BITOP_CONST_INT
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#undef H8300_GEN_TEST_BITOP
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#define find_first_zero_bit(addr, size) \
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find_next_zero_bit((addr), (size), 0)
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#define ffs(x) generic_ffs(x)
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#include <asm-generic/bitops/ffs.h>
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static __inline__ unsigned long __ffs(unsigned long word)
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{
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@ -196,216 +192,16 @@ static __inline__ unsigned long __ffs(unsigned long word)
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return result;
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}
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static __inline__ int find_next_zero_bit (const unsigned long * addr, int size, int offset)
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{
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unsigned long *p = (unsigned long *)(((unsigned long)addr + (offset >> 3)) & ~3);
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unsigned long result = offset & ~31UL;
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unsigned long tmp;
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if (offset >= size)
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return size;
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size -= result;
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offset &= 31UL;
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if (offset) {
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tmp = *(p++);
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tmp |= ~0UL >> (32-offset);
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if (size < 32)
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goto found_first;
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if (~tmp)
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goto found_middle;
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size -= 32;
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result += 32;
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}
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while (size & ~31UL) {
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if (~(tmp = *(p++)))
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goto found_middle;
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result += 32;
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size -= 32;
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}
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if (!size)
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return result;
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tmp = *p;
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found_first:
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tmp |= ~0UL << size;
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found_middle:
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return result + ffz(tmp);
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}
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static __inline__ unsigned long find_next_bit(const unsigned long *addr,
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unsigned long size, unsigned long offset)
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{
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unsigned long *p = (unsigned long *)(((unsigned long)addr + (offset >> 3)) & ~3);
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unsigned int result = offset & ~31UL;
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unsigned int tmp;
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if (offset >= size)
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return size;
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size -= result;
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offset &= 31UL;
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if (offset) {
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tmp = *(p++);
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tmp &= ~0UL << offset;
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if (size < 32)
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goto found_first;
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if (tmp)
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goto found_middle;
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size -= 32;
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result += 32;
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}
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while (size >= 32) {
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if ((tmp = *p++) != 0)
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goto found_middle;
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result += 32;
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size -= 32;
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}
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if (!size)
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return result;
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tmp = *p;
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found_first:
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tmp &= ~0UL >> (32 - size);
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if (tmp == 0UL)
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return result + size;
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found_middle:
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return result + __ffs(tmp);
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}
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#define find_first_bit(addr, size) find_next_bit(addr, size, 0)
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/*
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* Every architecture must define this function. It's the fastest
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* way of searching a 140-bit bitmap where the first 100 bits are
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* unlikely to be set. It's guaranteed that at least one of the 140
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* bits is cleared.
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*/
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static inline int sched_find_first_bit(unsigned long *b)
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{
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if (unlikely(b[0]))
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return __ffs(b[0]);
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if (unlikely(b[1]))
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return __ffs(b[1]) + 32;
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if (unlikely(b[2]))
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return __ffs(b[2]) + 64;
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if (b[3])
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return __ffs(b[3]) + 96;
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return __ffs(b[4]) + 128;
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}
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/*
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* hweightN: returns the hamming weight (i.e. the number
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* of bits set) of a N-bit word
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*/
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#define hweight32(x) generic_hweight32(x)
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#define hweight16(x) generic_hweight16(x)
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#define hweight8(x) generic_hweight8(x)
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static __inline__ int ext2_set_bit(int nr, volatile void * addr)
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{
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int mask, retval;
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unsigned long flags;
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volatile unsigned char *ADDR = (unsigned char *) addr;
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ADDR += nr >> 3;
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mask = 1 << (nr & 0x07);
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local_irq_save(flags);
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retval = (mask & *ADDR) != 0;
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*ADDR |= mask;
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local_irq_restore(flags);
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return retval;
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}
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#define ext2_set_bit_atomic(lock, nr, addr) ext2_set_bit(nr, addr)
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static __inline__ int ext2_clear_bit(int nr, volatile void * addr)
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{
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int mask, retval;
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unsigned long flags;
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volatile unsigned char *ADDR = (unsigned char *) addr;
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ADDR += nr >> 3;
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mask = 1 << (nr & 0x07);
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local_irq_save(flags);
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retval = (mask & *ADDR) != 0;
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*ADDR &= ~mask;
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local_irq_restore(flags);
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return retval;
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}
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#define ext2_clear_bit_atomic(lock, nr, addr) ext2_set_bit(nr, addr)
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static __inline__ int ext2_test_bit(int nr, const volatile void * addr)
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{
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int mask;
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const volatile unsigned char *ADDR = (const unsigned char *) addr;
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ADDR += nr >> 3;
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mask = 1 << (nr & 0x07);
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return ((mask & *ADDR) != 0);
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}
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#define ext2_find_first_zero_bit(addr, size) \
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ext2_find_next_zero_bit((addr), (size), 0)
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static __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned long size, unsigned long offset)
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{
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unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
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unsigned long result = offset & ~31UL;
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unsigned long tmp;
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if (offset >= size)
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return size;
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size -= result;
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offset &= 31UL;
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if(offset) {
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/* We hold the little endian value in tmp, but then the
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* shift is illegal. So we could keep a big endian value
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* in tmp, like this:
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*
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* tmp = __swab32(*(p++));
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* tmp |= ~0UL >> (32-offset);
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*
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* but this would decrease performance, so we change the
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* shift:
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*/
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tmp = *(p++);
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tmp |= __swab32(~0UL >> (32-offset));
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if(size < 32)
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goto found_first;
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if(~tmp)
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goto found_middle;
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size -= 32;
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result += 32;
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}
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while(size & ~31UL) {
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if(~(tmp = *(p++)))
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goto found_middle;
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result += 32;
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size -= 32;
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}
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if(!size)
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return result;
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tmp = *p;
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found_first:
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/* tmp is little endian, so we would have to swab the shift,
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* see above. But then we have to swab tmp below for ffz, so
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* we might as well do this here.
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*/
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return result + ffz(__swab32(tmp) | (~0UL << size));
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found_middle:
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return result + ffz(__swab32(tmp));
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}
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/* Bitmap functions for the minix filesystem. */
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#define minix_test_and_set_bit(nr,addr) __test_and_set_bit(nr,addr)
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#define minix_set_bit(nr,addr) __set_bit(nr,addr)
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#define minix_test_and_clear_bit(nr,addr) __test_and_clear_bit(nr,addr)
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#define minix_test_bit(nr,addr) test_bit(nr,addr)
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#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)
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#include <asm-generic/bitops/find.h>
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#include <asm-generic/bitops/sched.h>
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#include <asm-generic/bitops/hweight.h>
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#include <asm-generic/bitops/ext2-non-atomic.h>
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#include <asm-generic/bitops/ext2-atomic.h>
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#include <asm-generic/bitops/minix.h>
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#endif /* __KERNEL__ */
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#define fls(x) generic_fls(x)
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#define fls64(x) generic_fls64(x)
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#include <asm-generic/bitops/fls.h>
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#include <asm-generic/bitops/fls64.h>
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#endif /* _H8300_BITOPS_H */
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