Commit 2d78d4be authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
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[PATCH] bitops: sparc64: use generic bitops



- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove generic_fls()
- remove generic_fls64()
- remove sched_find_first_bit()
- remove ffs()

- unless defined(ULTRA_HAS_POPULATION_COUNT)

  - remove generic_hweight{64,32,16,8}()

- remove find_{next,first}{,_zero}_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
Signed-off-by: default avatarAkinobu Mita <mita@miraclelinux.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d59288b7
......@@ -162,6 +162,14 @@ config RWSEM_XCHGADD_ALGORITHM
bool
default y
config GENERIC_FIND_NEXT_BIT
bool
default y
config GENERIC_HWEIGHT
bool
default y if !ULTRA_HAS_POPULATION_COUNT
config GENERIC_CALIBRATE_DELAY
bool
default y
......
......@@ -175,11 +175,6 @@ EXPORT_SYMBOL(set_bit);
EXPORT_SYMBOL(clear_bit);
EXPORT_SYMBOL(change_bit);
/* Bit searching */
EXPORT_SYMBOL(find_next_bit);
EXPORT_SYMBOL(find_next_zero_bit);
EXPORT_SYMBOL(find_next_zero_le_bit);
EXPORT_SYMBOL(ivector_table);
EXPORT_SYMBOL(enable_irq);
EXPORT_SYMBOL(disable_irq);
......
......@@ -14,6 +14,6 @@ lib-y := PeeCeeI.o copy_page.o clear_page.o strlen.o strncmp.o \
NGmemcpy.o NGcopy_from_user.o NGcopy_to_user.o NGpatch.o \
NGpage.o NGbzero.o \
copy_in_user.o user_fixup.o memmove.o \
mcount.o ipcsum.o rwsem.o xor.o find_bit.o delay.o
mcount.o ipcsum.o rwsem.o xor.o delay.o
obj-y += iomap.o
#include <linux/bitops.h>
/**
* find_next_bit - find the next set bit in a memory region
* @addr: The address to base the search on
* @offset: The bitnumber to start searching at
* @size: The maximum size to search
*/
unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
unsigned long offset)
{
const unsigned long *p = addr + (offset >> 6);
unsigned long result = offset & ~63UL;
unsigned long tmp;
if (offset >= size)
return size;
size -= result;
offset &= 63UL;
if (offset) {
tmp = *(p++);
tmp &= (~0UL << offset);
if (size < 64)
goto found_first;
if (tmp)
goto found_middle;
size -= 64;
result += 64;
}
while (size & ~63UL) {
if ((tmp = *(p++)))
goto found_middle;
result += 64;
size -= 64;
}
if (!size)
return result;
tmp = *p;
found_first:
tmp &= (~0UL >> (64 - size));
if (tmp == 0UL) /* Are any bits set? */
return result + size; /* Nope. */
found_middle:
return result + __ffs(tmp);
}
/* find_next_zero_bit() finds the first zero bit in a bit string of length
* 'size' bits, starting the search at bit 'offset'. This is largely based
* on Linus's ALPHA routines, which are pretty portable BTW.
*/
unsigned long find_next_zero_bit(const unsigned long *addr,
unsigned long size, unsigned long offset)
{
const unsigned long *p = addr + (offset >> 6);
unsigned long result = offset & ~63UL;
unsigned long tmp;
if (offset >= size)
return size;
size -= result;
offset &= 63UL;
if (offset) {
tmp = *(p++);
tmp |= ~0UL >> (64-offset);
if (size < 64)
goto found_first;
if (~tmp)
goto found_middle;
size -= 64;
result += 64;
}
while (size & ~63UL) {
if (~(tmp = *(p++)))
goto found_middle;
result += 64;
size -= 64;
}
if (!size)
return result;
tmp = *p;
found_first:
tmp |= ~0UL << size;
if (tmp == ~0UL) /* Are any bits zero? */
return result + size; /* Nope. */
found_middle:
return result + ffz(tmp);
}
unsigned long find_next_zero_le_bit(unsigned long *addr, unsigned long size, unsigned long offset)
{
unsigned long *p = addr + (offset >> 6);
unsigned long result = offset & ~63UL;
unsigned long tmp;
if (offset >= size)
return size;
size -= result;
offset &= 63UL;
if(offset) {
tmp = __swab64p(p++);
tmp |= (~0UL >> (64-offset));
if(size < 64)
goto found_first;
if(~tmp)
goto found_middle;
size -= 64;
result += 64;
}
while(size & ~63) {
if(~(tmp = __swab64p(p++)))
goto found_middle;
result += 64;
size -= 64;
}
if(!size)
return result;
tmp = __swab64p(p);
found_first:
tmp |= (~0UL << size);
if (tmp == ~0UL) /* Are any bits zero? */
return result + size; /* Nope. */
found_middle:
return result + ffz(tmp);
}
......@@ -18,58 +18,7 @@ extern void set_bit(unsigned long nr, volatile unsigned long *addr);
extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
extern void change_bit(unsigned long nr, volatile unsigned long *addr);
/* "non-atomic" versions... */
static inline void __set_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
*m |= (1UL << (nr & 63));
}
static inline void __clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
*m &= ~(1UL << (nr & 63));
}
static inline void __change_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
*m ^= (1UL << (nr & 63));
}
static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
unsigned long old = *m;
unsigned long mask = (1UL << (nr & 63));
*m = (old | mask);
return ((old & mask) != 0);
}
static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
unsigned long old = *m;
unsigned long mask = (1UL << (nr & 63));
*m = (old & ~mask);
return ((old & mask) != 0);
}
static inline int __test_and_change_bit(int nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
unsigned long old = *m;
unsigned long mask = (1UL << (nr & 63));
*m = (old ^ mask);
return ((old & mask) != 0);
}
#include <asm-generic/bitops/non-atomic.h>
#ifdef CONFIG_SMP
#define smp_mb__before_clear_bit() membar_storeload_loadload()
......@@ -79,78 +28,15 @@ static inline int __test_and_change_bit(int nr, volatile unsigned long *addr)
#define smp_mb__after_clear_bit() barrier()
#endif
static inline int test_bit(int nr, __const__ volatile unsigned long *addr)
{
return (1UL & (addr[nr >> 6] >> (nr & 63))) != 0UL;
}
/* The easy/cheese version for now. */
static inline unsigned long ffz(unsigned long word)
{
unsigned long result;
result = 0;
while(word & 1) {
result++;
word >>= 1;
}
return result;
}
/**
* __ffs - find first bit in word.
* @word: The word to search
*
* Undefined if no bit exists, so code should check against 0 first.
*/
static inline unsigned long __ffs(unsigned long word)
{
unsigned long result = 0;
while (!(word & 1UL)) {
result++;
word >>= 1;
}
return result;
}
/*
* fls: find last bit set.
*/
#define fls(x) generic_fls(x)
#define fls64(x) generic_fls64(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>
#ifdef __KERNEL__
/*
* 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(((unsigned int)b[1])))
return __ffs(b[1]) + 64;
if (b[1] >> 32)
return __ffs(b[1] >> 32) + 96;
return __ffs(b[2]) + 128;
}
/*
* 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).
*/
static inline int ffs(int x)
{
if (!x)
return 0;
return __ffs((unsigned long)x) + 1;
}
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/ffs.h>
/*
* hweightN: returns the hamming weight (i.e. the number
......@@ -193,102 +79,23 @@ static inline unsigned int hweight8(unsigned int w)
#else
#define hweight64(x) generic_hweight64(x)
#define hweight32(x) generic_hweight32(x)
#define hweight16(x) generic_hweight16(x)
#define hweight8(x) generic_hweight8(x)
#include <asm-generic/bitops/hweight.h>
#endif
#endif /* __KERNEL__ */
/**
* find_next_bit - find the next set bit in a memory region
* @addr: The address to base the search on
* @offset: The bitnumber to start searching at
* @size: The maximum size to search
*/
extern unsigned long find_next_bit(const unsigned long *, unsigned long,
unsigned long);
/**
* find_first_bit - find the first set bit in a memory region
* @addr: The address to start the search at
* @size: The maximum size to search
*
* Returns the bit-number of the first set bit, not the number of the byte
* containing a bit.
*/
#define find_first_bit(addr, size) \
find_next_bit((addr), (size), 0)
/* find_next_zero_bit() finds the first zero bit in a bit string of length
* 'size' bits, starting the search at bit 'offset'. This is largely based
* on Linus's ALPHA routines, which are pretty portable BTW.
*/
extern unsigned long find_next_zero_bit(const unsigned long *,
unsigned long, unsigned long);
#define find_first_zero_bit(addr, size) \
find_next_zero_bit((addr), (size), 0)
#define test_and_set_le_bit(nr,addr) \
test_and_set_bit((nr) ^ 0x38, (addr))
#define test_and_clear_le_bit(nr,addr) \
test_and_clear_bit((nr) ^ 0x38, (addr))
static inline int test_le_bit(int nr, __const__ unsigned long * addr)
{
int mask;
__const__ unsigned char *ADDR = (__const__ unsigned char *) addr;
ADDR += nr >> 3;
mask = 1 << (nr & 0x07);
return ((mask & *ADDR) != 0);
}
#define find_first_zero_le_bit(addr, size) \
find_next_zero_le_bit((addr), (size), 0)
extern unsigned long find_next_zero_le_bit(unsigned long *, unsigned long, unsigned long);
#include <asm-generic/bitops/find.h>
#ifdef __KERNEL__
#define __set_le_bit(nr, addr) \
__set_bit((nr) ^ 0x38, (addr))
#define __clear_le_bit(nr, addr) \
__clear_bit((nr) ^ 0x38, (addr))
#define __test_and_clear_le_bit(nr, addr) \
__test_and_clear_bit((nr) ^ 0x38, (addr))
#define __test_and_set_le_bit(nr, addr) \
__test_and_set_bit((nr) ^ 0x38, (addr))
#include <asm-generic/bitops/ext2-non-atomic.h>
#define ext2_set_bit(nr,addr) \
__test_and_set_le_bit((nr),(unsigned long *)(addr))
#define ext2_set_bit_atomic(lock,nr,addr) \
test_and_set_le_bit((nr),(unsigned long *)(addr))
#define ext2_clear_bit(nr,addr) \
__test_and_clear_le_bit((nr),(unsigned long *)(addr))
test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
#define ext2_clear_bit_atomic(lock,nr,addr) \
test_and_clear_le_bit((nr),(unsigned long *)(addr))
#define ext2_test_bit(nr,addr) \
test_le_bit((nr),(unsigned long *)(addr))
#define ext2_find_first_zero_bit(addr, size) \
find_first_zero_le_bit((unsigned long *)(addr), (size))
#define ext2_find_next_zero_bit(addr, size, off) \
find_next_zero_le_bit((unsigned long *)(addr), (size), (off))
test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
/* Bitmap functions for the minix filesystem. */
#define minix_test_and_set_bit(nr,addr) \
__test_and_set_bit((nr),(unsigned long *)(addr))
#define minix_set_bit(nr,addr) \
__set_bit((nr),(unsigned long *)(addr))
#define minix_test_and_clear_bit(nr,addr) \
__test_and_clear_bit((nr),(unsigned long *)(addr))
#define minix_test_bit(nr,addr) \
test_bit((nr),(unsigned long *)(addr))
#define minix_find_first_zero_bit(addr,size) \
find_first_zero_bit((unsigned long *)(addr),(size))
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
......
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