[PATCH] bitops: parisc: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove generic_fls64()
- remove generic_hweight{32,16,8}()
- remove generic_hweight64()
- remove sched_find_first_bit()
- remove find_{next,first}{,_zero}_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
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
3c9ee7ef87
commit
59e18a2e1c
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@ -25,6 +25,14 @@ config RWSEM_GENERIC_SPINLOCK
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config RWSEM_XCHGADD_ALGORITHM
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bool
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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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@ -35,13 +35,6 @@ static __inline__ void set_bit(int nr, volatile unsigned long * addr)
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_atomic_spin_unlock_irqrestore(addr, flags);
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}
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static __inline__ void __set_bit(unsigned long nr, volatile unsigned long * addr)
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{
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unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
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*m |= 1UL << CHOP_SHIFTCOUNT(nr);
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}
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static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
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{
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unsigned long mask = ~(1UL << CHOP_SHIFTCOUNT(nr));
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@ -53,13 +46,6 @@ static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
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_atomic_spin_unlock_irqrestore(addr, flags);
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}
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static __inline__ void __clear_bit(unsigned long nr, volatile unsigned long * addr)
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{
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unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
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*m &= ~(1UL << CHOP_SHIFTCOUNT(nr));
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}
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static __inline__ void change_bit(int nr, volatile unsigned long * addr)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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@ -71,13 +57,6 @@ static __inline__ void change_bit(int nr, volatile unsigned long * addr)
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_atomic_spin_unlock_irqrestore(addr, flags);
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}
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static __inline__ void __change_bit(unsigned long nr, volatile unsigned long * addr)
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{
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unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
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*m ^= 1UL << CHOP_SHIFTCOUNT(nr);
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}
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static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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@ -93,18 +72,6 @@ static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int __test_and_set_bit(int nr, volatile unsigned long * address)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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unsigned long oldbit;
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unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
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oldbit = *addr;
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*addr = oldbit | mask;
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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@ -120,18 +87,6 @@ static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int __test_and_clear_bit(int nr, volatile unsigned long * address)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
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unsigned long oldbit;
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oldbit = *addr;
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*addr = oldbit & ~mask;
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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@ -147,25 +102,7 @@ static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int __test_and_change_bit(int nr, volatile unsigned long * address)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
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unsigned long oldbit;
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oldbit = *addr;
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*addr = oldbit ^ mask;
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return (oldbit & mask) ? 1 : 0;
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}
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static __inline__ int test_bit(int nr, const volatile unsigned long *address)
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{
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unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
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const unsigned long *addr = (const unsigned long *)address + (nr >> SHIFT_PER_LONG);
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return !!(*addr & mask);
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}
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#include <asm-generic/bitops/non-atomic.h>
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#ifdef __KERNEL__
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@ -219,8 +156,7 @@ static __inline__ unsigned long __ffs(unsigned long x)
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return ret;
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}
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/* Undefined if no bit is zero. */
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#define ffz(x) __ffs(~(x))
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#include <asm-generic/bitops/ffz.h>
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/*
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* ffs: find first bit set. returns 1 to BITS_PER_LONG or 0 (if none set)
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@ -263,155 +199,22 @@ static __inline__ int fls(int x)
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return ret;
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}
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#define fls64(x) generic_fls64(x)
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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 hweight64(x) generic_hweight64(x)
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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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/*
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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(const unsigned long *b)
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{
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#ifdef __LP64__
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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]) + 64;
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return __ffs(b[2]) + 128;
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#else
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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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#endif
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}
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#include <asm-generic/bitops/fls64.h>
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#include <asm-generic/bitops/hweight.h>
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#include <asm-generic/bitops/sched.h>
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#endif /* __KERNEL__ */
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/*
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* This implementation of find_{first,next}_zero_bit was stolen from
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* Linus' asm-alpha/bitops.h.
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*/
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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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static __inline__ unsigned long find_next_zero_bit(const void * addr, unsigned long size, unsigned long offset)
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{
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const unsigned long * p = ((unsigned long *) addr) + (offset >> SHIFT_PER_LONG);
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unsigned long result = offset & ~(BITS_PER_LONG-1);
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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 &= (BITS_PER_LONG-1);
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if (offset) {
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tmp = *(p++);
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tmp |= ~0UL >> (BITS_PER_LONG-offset);
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if (size < BITS_PER_LONG)
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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 -= BITS_PER_LONG;
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result += BITS_PER_LONG;
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}
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while (size & ~(BITS_PER_LONG -1)) {
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if (~(tmp = *(p++)))
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goto found_middle;
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result += BITS_PER_LONG;
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size -= BITS_PER_LONG;
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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, unsigned long size, unsigned long offset)
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{
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const unsigned long *p = addr + (offset >> SHIFT_PER_LONG);
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unsigned long result = offset & ~(BITS_PER_LONG-1);
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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 &= (BITS_PER_LONG-1);
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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 < BITS_PER_LONG)
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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 -= BITS_PER_LONG;
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result += BITS_PER_LONG;
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}
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while (size & ~(BITS_PER_LONG-1)) {
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if ((tmp = *(p++)))
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goto found_middle;
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result += BITS_PER_LONG;
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size -= BITS_PER_LONG;
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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 >> (BITS_PER_LONG - size));
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if (tmp == 0UL) /* Are any bits set? */
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return result + size; /* Nope. */
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found_middle:
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return result + __ffs(tmp);
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}
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/**
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* find_first_bit - find the first set bit in a memory region
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* @addr: The address to start the search at
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* @size: The maximum size to search
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*
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* Returns the bit-number of the first set bit, not the number of the byte
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* containing a bit.
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*/
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#define find_first_bit(addr, size) \
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find_next_bit((addr), (size), 0)
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#define _EXT2_HAVE_ASM_BITOPS_
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#include <asm-generic/bitops/find.h>
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#ifdef __KERNEL__
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/*
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* test_and_{set,clear}_bit guarantee atomicity without
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* disabling interrupts.
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*/
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#include <asm-generic/bitops/ext2-non-atomic.h>
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/* '3' is bits per byte */
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#define LE_BYTE_ADDR ((sizeof(unsigned long) - 1) << 3)
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#define ext2_test_bit(nr, addr) \
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test_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
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#define ext2_set_bit(nr, addr) \
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__test_and_set_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
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#define ext2_clear_bit(nr, addr) \
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__test_and_clear_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
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#define ext2_set_bit_atomic(l,nr,addr) \
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test_and_set_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
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#define ext2_clear_bit_atomic(l,nr,addr) \
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@ -419,77 +222,6 @@ found_middle:
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#endif /* __KERNEL__ */
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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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/* include/linux/byteorder does not support "unsigned long" type */
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static inline unsigned long ext2_swabp(unsigned long * x)
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{
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#ifdef __LP64__
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return (unsigned long) __swab64p((u64 *) x);
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#else
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return (unsigned long) __swab32p((u32 *) x);
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#endif
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}
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/* include/linux/byteorder doesn't support "unsigned long" type */
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static inline unsigned long ext2_swab(unsigned long y)
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{
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#ifdef __LP64__
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return (unsigned long) __swab64((u64) y);
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#else
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return (unsigned long) __swab32((u32) y);
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#endif
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}
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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 >> SHIFT_PER_LONG);
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unsigned long result = offset & ~(BITS_PER_LONG - 1);
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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 &= (BITS_PER_LONG - 1UL);
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if (offset) {
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tmp = ext2_swabp(p++);
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tmp |= (~0UL >> (BITS_PER_LONG - offset));
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if (size < BITS_PER_LONG)
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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 -= BITS_PER_LONG;
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result += BITS_PER_LONG;
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}
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while (size & ~(BITS_PER_LONG - 1)) {
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if (~(tmp = *(p++)))
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goto found_middle_swap;
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result += BITS_PER_LONG;
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size -= BITS_PER_LONG;
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}
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if (!size)
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return result;
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tmp = ext2_swabp(p);
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found_first:
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tmp |= ~0UL << size;
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if (tmp == ~0UL) /* Are any bits zero? */
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return result + size; /* Nope. Skip ffz */
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found_middle:
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return result + ffz(tmp);
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found_middle_swap:
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return result + ffz(ext2_swab(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) ext2_set_bit(nr,addr)
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#define minix_set_bit(nr,addr) ((void)ext2_set_bit(nr,addr))
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#define minix_test_and_clear_bit(nr,addr) ext2_clear_bit(nr,addr)
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#define minix_test_bit(nr,addr) ext2_test_bit(nr,addr)
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#define minix_find_first_zero_bit(addr,size) ext2_find_first_zero_bit(addr,size)
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#include <asm-generic/bitops/minix-le.h>
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#endif /* _PARISC_BITOPS_H */
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