mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 17:23:55 +08:00
[PATCH] bitops: sh: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove find_{next,first}{,_zero}_bit()
- remove generic_ffs()
- remove generic_hweight{32,16,8}()
- remove sched_find_first_bit()
- 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: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.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
7e33db4e2e
commit
e2268c7129
@ -21,6 +21,14 @@ config RWSEM_GENERIC_SPINLOCK
|
||||
config RWSEM_XCHGADD_ALGORITHM
|
||||
bool
|
||||
|
||||
config GENERIC_FIND_NEXT_BIT
|
||||
bool
|
||||
default y
|
||||
|
||||
config GENERIC_HWEIGHT
|
||||
bool
|
||||
default y
|
||||
|
||||
config GENERIC_HARDIRQS
|
||||
bool
|
||||
default y
|
||||
|
||||
@ -19,16 +19,6 @@ static __inline__ void set_bit(int nr, volatile void * addr)
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static __inline__ void __set_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
*a |= mask;
|
||||
}
|
||||
|
||||
/*
|
||||
* clear_bit() doesn't provide any barrier for the compiler.
|
||||
*/
|
||||
@ -47,16 +37,6 @@ static __inline__ void clear_bit(int nr, volatile void * addr)
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static __inline__ void __clear_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
*a &= ~mask;
|
||||
}
|
||||
|
||||
static __inline__ void change_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask;
|
||||
@ -70,16 +50,6 @@ static __inline__ void change_bit(int nr, volatile void * addr)
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static __inline__ void __change_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
*a ^= mask;
|
||||
}
|
||||
|
||||
static __inline__ int test_and_set_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
@ -96,19 +66,6 @@ static __inline__ int test_and_set_bit(int nr, volatile void * addr)
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int __test_and_set_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
retval = (mask & *a) != 0;
|
||||
*a |= mask;
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
@ -125,19 +82,6 @@ static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
retval = (mask & *a) != 0;
|
||||
*a &= ~mask;
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int test_and_change_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
@ -154,23 +98,7 @@ static __inline__ int test_and_change_bit(int nr, volatile void * addr)
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int __test_and_change_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
volatile unsigned int *a = addr;
|
||||
|
||||
a += nr >> 5;
|
||||
mask = 1 << (nr & 0x1f);
|
||||
retval = (mask & *a) != 0;
|
||||
*a ^= mask;
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int test_bit(int nr, const volatile void *addr)
|
||||
{
|
||||
return 1UL & (((const volatile unsigned int *) addr)[nr >> 5] >> (nr & 31));
|
||||
}
|
||||
#include <asm-generic/bitops/non-atomic.h>
|
||||
|
||||
static __inline__ unsigned long ffz(unsigned long word)
|
||||
{
|
||||
@ -206,265 +134,15 @@ static __inline__ unsigned long __ffs(unsigned long word)
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* 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
|
||||
*/
|
||||
static __inline__ unsigned long find_next_bit(const unsigned long *addr,
|
||||
unsigned long size, unsigned long offset)
|
||||
{
|
||||
unsigned int *p = ((unsigned int *) addr) + (offset >> 5);
|
||||
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) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found_middle:
|
||||
return result + __ffs(tmp);
|
||||
}
|
||||
|
||||
/**
|
||||
* 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)
|
||||
|
||||
static __inline__ int find_next_zero_bit(const unsigned long *addr, int size, int offset)
|
||||
{
|
||||
const 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) {
|
||||
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);
|
||||
}
|
||||
|
||||
#define find_first_zero_bit(addr, size) \
|
||||
find_next_zero_bit((addr), (size), 0)
|
||||
|
||||
/*
|
||||
* 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)
|
||||
|
||||
/*
|
||||
* 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)
|
||||
|
||||
/*
|
||||
* 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(const 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;
|
||||
}
|
||||
|
||||
#ifdef __LITTLE_ENDIAN__
|
||||
#define ext2_set_bit(nr, addr) __test_and_set_bit((nr), (addr))
|
||||
#define ext2_clear_bit(nr, addr) __test_and_clear_bit((nr), (addr))
|
||||
#define ext2_test_bit(nr, addr) test_bit((nr), (addr))
|
||||
#define ext2_find_first_zero_bit(addr, size) find_first_zero_bit((addr), (size))
|
||||
#define ext2_find_next_zero_bit(addr, size, offset) \
|
||||
find_next_zero_bit((unsigned long *)(addr), (size), (offset))
|
||||
#else
|
||||
static __inline__ int ext2_set_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
volatile unsigned char *ADDR = (unsigned char *) addr;
|
||||
|
||||
ADDR += nr >> 3;
|
||||
mask = 1 << (nr & 0x07);
|
||||
retval = (mask & *ADDR) != 0;
|
||||
*ADDR |= mask;
|
||||
return retval;
|
||||
}
|
||||
|
||||
static __inline__ int ext2_clear_bit(int nr, volatile void * addr)
|
||||
{
|
||||
int mask, retval;
|
||||
volatile unsigned char *ADDR = (unsigned char *) addr;
|
||||
|
||||
ADDR += nr >> 3;
|
||||
mask = 1 << (nr & 0x07);
|
||||
retval = (mask & *ADDR) != 0;
|
||||
*ADDR &= ~mask;
|
||||
return retval;
|
||||
}
|
||||
|
||||
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 preformance, 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));
|
||||
}
|
||||
#endif
|
||||
|
||||
#define ext2_set_bit_atomic(lock, nr, addr) \
|
||||
({ \
|
||||
int ret; \
|
||||
spin_lock(lock); \
|
||||
ret = ext2_set_bit((nr), (addr)); \
|
||||
spin_unlock(lock); \
|
||||
ret; \
|
||||
})
|
||||
|
||||
#define ext2_clear_bit_atomic(lock, nr, addr) \
|
||||
({ \
|
||||
int ret; \
|
||||
spin_lock(lock); \
|
||||
ret = ext2_clear_bit((nr), (addr)); \
|
||||
spin_unlock(lock); \
|
||||
ret; \
|
||||
})
|
||||
|
||||
/* 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)
|
||||
|
||||
/*
|
||||
* fls: find last bit set.
|
||||
*/
|
||||
|
||||
#define fls(x) generic_fls(x)
|
||||
#define fls64(x) generic_fls64(x)
|
||||
#include <asm-generic/bitops/find.h>
|
||||
#include <asm-generic/bitops/ffs.h>
|
||||
#include <asm-generic/bitops/hweight.h>
|
||||
#include <asm-generic/bitops/sched.h>
|
||||
#include <asm-generic/bitops/ext2-non-atomic.h>
|
||||
#include <asm-generic/bitops/ext2-atomic.h>
|
||||
#include <asm-generic/bitops/minix.h>
|
||||
#include <asm-generic/bitops/fls.h>
|
||||
#include <asm-generic/bitops/fls64.h>
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user