mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 06:31:49 +00:00
[PATCH] bitops: arm26: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove generic_fls()
- remove generic_fls64()
- remove generic_ffs()
- remove sched_find_first_bit()
- remove generic_hweight{32,16,8}()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Ian Molton <spyro@f2s.com>
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
b89c3b165f
commit
d142d86019
@ -41,6 +41,10 @@ config RWSEM_GENERIC_SPINLOCK
|
||||
config RWSEM_XCHGADD_ALGORITHM
|
||||
bool
|
||||
|
||||
config GENERIC_HWEIGHT
|
||||
bool
|
||||
default y
|
||||
|
||||
config GENERIC_CALIBRATE_DELAY
|
||||
bool
|
||||
default y
|
||||
|
||||
@ -117,65 +117,7 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
|
||||
return res & mask;
|
||||
}
|
||||
|
||||
/*
|
||||
* Now the non-atomic variants. We let the compiler handle all
|
||||
* optimisations for these. These are all _native_ endian.
|
||||
*/
|
||||
static inline void __set_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
p[nr >> 5] |= (1UL << (nr & 31));
|
||||
}
|
||||
|
||||
static inline void __clear_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
p[nr >> 5] &= ~(1UL << (nr & 31));
|
||||
}
|
||||
|
||||
static inline void __change_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
p[nr >> 5] ^= (1UL << (nr & 31));
|
||||
}
|
||||
|
||||
static inline int __test_and_set_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
unsigned long oldval, mask = 1UL << (nr & 31);
|
||||
|
||||
p += nr >> 5;
|
||||
|
||||
oldval = *p;
|
||||
*p = oldval | mask;
|
||||
return oldval & mask;
|
||||
}
|
||||
|
||||
static inline int __test_and_clear_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
unsigned long oldval, mask = 1UL << (nr & 31);
|
||||
|
||||
p += nr >> 5;
|
||||
|
||||
oldval = *p;
|
||||
*p = oldval & ~mask;
|
||||
return oldval & mask;
|
||||
}
|
||||
|
||||
static inline int __test_and_change_bit(int nr, volatile unsigned long *p)
|
||||
{
|
||||
unsigned long oldval, mask = 1UL << (nr & 31);
|
||||
|
||||
p += nr >> 5;
|
||||
|
||||
oldval = *p;
|
||||
*p = oldval ^ mask;
|
||||
return oldval & mask;
|
||||
}
|
||||
|
||||
/*
|
||||
* This routine doesn't need to be atomic.
|
||||
*/
|
||||
static inline int __test_bit(int nr, const volatile unsigned long * p)
|
||||
{
|
||||
return (p[nr >> 5] >> (nr & 31)) & 1UL;
|
||||
}
|
||||
#include <asm-generic/bitops/non-atomic.h>
|
||||
|
||||
/*
|
||||
* Little endian assembly bitops. nr = 0 -> byte 0 bit 0.
|
||||
@ -211,7 +153,6 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
|
||||
#define test_and_set_bit(nr,p) ATOMIC_BITOP_LE(test_and_set_bit,nr,p)
|
||||
#define test_and_clear_bit(nr,p) ATOMIC_BITOP_LE(test_and_clear_bit,nr,p)
|
||||
#define test_and_change_bit(nr,p) ATOMIC_BITOP_LE(test_and_change_bit,nr,p)
|
||||
#define test_bit(nr,p) __test_bit(nr,p)
|
||||
#define find_first_zero_bit(p,sz) _find_first_zero_bit_le(p,sz)
|
||||
#define find_next_zero_bit(p,sz,off) _find_next_zero_bit_le(p,sz,off)
|
||||
#define find_first_bit(p,sz) _find_first_bit_le(p,sz)
|
||||
@ -219,80 +160,13 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
|
||||
|
||||
#define WORD_BITOFF_TO_LE(x) ((x))
|
||||
|
||||
/*
|
||||
* ffz = Find First Zero in word. Undefined if no zero exists,
|
||||
* so code should check against ~0UL first..
|
||||
*/
|
||||
static inline unsigned long ffz(unsigned long word)
|
||||
{
|
||||
int k;
|
||||
|
||||
word = ~word;
|
||||
k = 31;
|
||||
if (word & 0x0000ffff) { k -= 16; word <<= 16; }
|
||||
if (word & 0x00ff0000) { k -= 8; word <<= 8; }
|
||||
if (word & 0x0f000000) { k -= 4; word <<= 4; }
|
||||
if (word & 0x30000000) { k -= 2; word <<= 2; }
|
||||
if (word & 0x40000000) { k -= 1; }
|
||||
return k;
|
||||
}
|
||||
|
||||
/*
|
||||
* ffz = Find First Zero in word. Undefined if no zero exists,
|
||||
* so code should check against ~0UL first..
|
||||
*/
|
||||
static inline unsigned long __ffs(unsigned long word)
|
||||
{
|
||||
int k;
|
||||
|
||||
k = 31;
|
||||
if (word & 0x0000ffff) { k -= 16; word <<= 16; }
|
||||
if (word & 0x00ff0000) { k -= 8; word <<= 8; }
|
||||
if (word & 0x0f000000) { k -= 4; word <<= 4; }
|
||||
if (word & 0x30000000) { k -= 2; word <<= 2; }
|
||||
if (word & 0x40000000) { k -= 1; }
|
||||
return k;
|
||||
}
|
||||
|
||||
/*
|
||||
* fls: find last bit set.
|
||||
*/
|
||||
|
||||
#define fls(x) generic_fls(x)
|
||||
#define fls64(x) generic_fls64(x)
|
||||
|
||||
/*
|
||||
* 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)
|
||||
|
||||
/*
|
||||
* Find first bit set in a 168-bit bitmap, where the first
|
||||
* 128 bits are unlikely to be set.
|
||||
*/
|
||||
static inline int sched_find_first_bit(unsigned long *b)
|
||||
{
|
||||
unsigned long v;
|
||||
unsigned int off;
|
||||
|
||||
for (off = 0; v = b[off], off < 4; off++) {
|
||||
if (unlikely(v))
|
||||
break;
|
||||
}
|
||||
return __ffs(v) + off * 32;
|
||||
}
|
||||
|
||||
/*
|
||||
* 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)
|
||||
#include <asm-generic/bitops/ffz.h>
|
||||
#include <asm-generic/bitops/__ffs.h>
|
||||
#include <asm-generic/bitops/fls.h>
|
||||
#include <asm-generic/bitops/fls64.h>
|
||||
#include <asm-generic/bitops/ffs.h>
|
||||
#include <asm-generic/bitops/sched.h>
|
||||
#include <asm-generic/bitops/hweight.h>
|
||||
|
||||
/*
|
||||
* Ext2 is defined to use little-endian byte ordering.
|
||||
@ -307,7 +181,7 @@ static inline int sched_find_first_bit(unsigned long *b)
|
||||
#define ext2_clear_bit_atomic(lock,nr,p) \
|
||||
test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
#define ext2_test_bit(nr,p) \
|
||||
__test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
#define ext2_find_first_zero_bit(p,sz) \
|
||||
_find_first_zero_bit_le(p,sz)
|
||||
#define ext2_find_next_zero_bit(p,sz,off) \
|
||||
@ -320,7 +194,7 @@ static inline int sched_find_first_bit(unsigned long *b)
|
||||
#define minix_set_bit(nr,p) \
|
||||
__set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
#define minix_test_bit(nr,p) \
|
||||
__test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
#define minix_test_and_set_bit(nr,p) \
|
||||
__test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p))
|
||||
#define minix_test_and_clear_bit(nr,p) \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user