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authorAkinobu Mita <mita@miraclelinux.com>2006-03-26 01:39:31 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:57:14 -0800
commit59e18a2e1c8f6642c307032939daaf474c16344e (patch)
treea0c58aa0e68703cf3844108f46636a6adf941ea6
parent3c9ee7ef87414cba80dbdf433d3547bb20055ef7 (diff)
downloadop-kernel-dev-59e18a2e1c8f6642c307032939daaf474c16344e.zip
op-kernel-dev-59e18a2e1c8f6642c307032939daaf474c16344e.tar.gz
[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>
-rw-r--r--arch/parisc/Kconfig8
-rw-r--r--include/asm-parisc/bitops.h286
2 files changed, 17 insertions, 277 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index eca33cf..6b3c509 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -25,6 +25,14 @@ 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_CALIBRATE_DELAY
bool
default y
diff --git a/include/asm-parisc/bitops.h b/include/asm-parisc/bitops.h
index ca6119a..9005619 100644
--- a/include/asm-parisc/bitops.h
+++ b/include/asm-parisc/bitops.h
@@ -35,13 +35,6 @@ static __inline__ void set_bit(int nr, volatile unsigned long * addr)
_atomic_spin_unlock_irqrestore(addr, flags);
}
-static __inline__ void __set_bit(unsigned long nr, volatile unsigned long * addr)
-{
- unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
-
- *m |= 1UL << CHOP_SHIFTCOUNT(nr);
-}
-
static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
{
unsigned long mask = ~(1UL << CHOP_SHIFTCOUNT(nr));
@@ -53,13 +46,6 @@ static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
_atomic_spin_unlock_irqrestore(addr, flags);
}
-static __inline__ void __clear_bit(unsigned long nr, volatile unsigned long * addr)
-{
- unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
-
- *m &= ~(1UL << CHOP_SHIFTCOUNT(nr));
-}
-
static __inline__ void change_bit(int nr, volatile unsigned long * addr)
{
unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
@@ -71,13 +57,6 @@ static __inline__ void change_bit(int nr, volatile unsigned long * addr)
_atomic_spin_unlock_irqrestore(addr, flags);
}
-static __inline__ void __change_bit(unsigned long nr, volatile unsigned long * addr)
-{
- unsigned long *m = (unsigned long *) addr + (nr >> SHIFT_PER_LONG);
-
- *m ^= 1UL << CHOP_SHIFTCOUNT(nr);
-}
-
static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
{
unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
@@ -93,18 +72,6 @@ static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
return (oldbit & mask) ? 1 : 0;
}
-static __inline__ int __test_and_set_bit(int nr, volatile unsigned long * address)
-{
- unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
- unsigned long oldbit;
- unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
-
- oldbit = *addr;
- *addr = oldbit | mask;
-
- return (oldbit & mask) ? 1 : 0;
-}
-
static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
{
unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
@@ -120,18 +87,6 @@ static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
return (oldbit & mask) ? 1 : 0;
}
-static __inline__ int __test_and_clear_bit(int nr, volatile unsigned long * address)
-{
- unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
- unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
- unsigned long oldbit;
-
- oldbit = *addr;
- *addr = oldbit & ~mask;
-
- return (oldbit & mask) ? 1 : 0;
-}
-
static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
{
unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
@@ -147,25 +102,7 @@ static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
return (oldbit & mask) ? 1 : 0;
}
-static __inline__ int __test_and_change_bit(int nr, volatile unsigned long * address)
-{
- unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
- unsigned long *addr = (unsigned long *)address + (nr >> SHIFT_PER_LONG);
- unsigned long oldbit;
-
- oldbit = *addr;
- *addr = oldbit ^ mask;
-
- return (oldbit & mask) ? 1 : 0;
-}
-
-static __inline__ int test_bit(int nr, const volatile unsigned long *address)
-{
- unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
- const unsigned long *addr = (const unsigned long *)address + (nr >> SHIFT_PER_LONG);
-
- return !!(*addr & mask);
-}
+#include <asm-generic/bitops/non-atomic.h>
#ifdef __KERNEL__
@@ -219,8 +156,7 @@ static __inline__ unsigned long __ffs(unsigned long x)
return ret;
}
-/* Undefined if no bit is zero. */
-#define ffz(x) __ffs(~(x))
+#include <asm-generic/bitops/ffz.h>
/*
* ffs: find first bit set. returns 1 to BITS_PER_LONG or 0 (if none set)
@@ -263,155 +199,22 @@ static __inline__ int fls(int x)
return ret;
}
-#define fls64(x) generic_fls64(x)
-/*
- * hweightN: returns the hamming weight (i.e. the number
- * of bits set) of a N-bit word
- */
-#define hweight64(x) generic_hweight64(x)
-#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)
-{
-#ifdef __LP64__
- if (unlikely(b[0]))
- return __ffs(b[0]);
- if (unlikely(b[1]))
- return __ffs(b[1]) + 64;
- return __ffs(b[2]) + 128;
-#else
- 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;
-#endif
-}
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/sched.h>
#endif /* __KERNEL__ */
-/*
- * This implementation of find_{first,next}_zero_bit was stolen from
- * Linus' asm-alpha/bitops.h.
- */
-#define find_first_zero_bit(addr, size) \
- find_next_zero_bit((addr), (size), 0)
-
-static __inline__ unsigned long find_next_zero_bit(const void * addr, unsigned long size, unsigned long offset)
-{
- const unsigned long * p = ((unsigned long *) addr) + (offset >> SHIFT_PER_LONG);
- unsigned long result = offset & ~(BITS_PER_LONG-1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= (BITS_PER_LONG-1);
- if (offset) {
- tmp = *(p++);
- tmp |= ~0UL >> (BITS_PER_LONG-offset);
- if (size < BITS_PER_LONG)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
- while (size & ~(BITS_PER_LONG -1)) {
- if (~(tmp = *(p++)))
- goto found_middle;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = *p;
-found_first:
- tmp |= ~0UL << size;
-found_middle:
- return result + ffz(tmp);
-}
-
-static __inline__ unsigned long find_next_bit(const unsigned long *addr, unsigned long size, unsigned long offset)
-{
- const unsigned long *p = addr + (offset >> SHIFT_PER_LONG);
- unsigned long result = offset & ~(BITS_PER_LONG-1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= (BITS_PER_LONG-1);
- if (offset) {
- tmp = *(p++);
- tmp &= (~0UL << offset);
- if (size < BITS_PER_LONG)
- goto found_first;
- if (tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
- while (size & ~(BITS_PER_LONG-1)) {
- if ((tmp = *(p++)))
- goto found_middle;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = *p;
-
-found_first:
- tmp &= (~0UL >> (BITS_PER_LONG - 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)
-
-#define _EXT2_HAVE_ASM_BITOPS_
+#include <asm-generic/bitops/find.h>
#ifdef __KERNEL__
-/*
- * test_and_{set,clear}_bit guarantee atomicity without
- * disabling interrupts.
- */
+
+#include <asm-generic/bitops/ext2-non-atomic.h>
/* '3' is bits per byte */
#define LE_BYTE_ADDR ((sizeof(unsigned long) - 1) << 3)
-#define ext2_test_bit(nr, addr) \
- test_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
-#define ext2_set_bit(nr, addr) \
- __test_and_set_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
-#define ext2_clear_bit(nr, addr) \
- __test_and_clear_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
-
#define ext2_set_bit_atomic(l,nr,addr) \
test_and_set_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr)
#define ext2_clear_bit_atomic(l,nr,addr) \
@@ -419,77 +222,6 @@ found_middle:
#endif /* __KERNEL__ */
-
-#define ext2_find_first_zero_bit(addr, size) \
- ext2_find_next_zero_bit((addr), (size), 0)
-
-/* include/linux/byteorder does not support "unsigned long" type */
-static inline unsigned long ext2_swabp(unsigned long * x)
-{
-#ifdef __LP64__
- return (unsigned long) __swab64p((u64 *) x);
-#else
- return (unsigned long) __swab32p((u32 *) x);
-#endif
-}
-
-/* include/linux/byteorder doesn't support "unsigned long" type */
-static inline unsigned long ext2_swab(unsigned long y)
-{
-#ifdef __LP64__
- return (unsigned long) __swab64((u64) y);
-#else
- return (unsigned long) __swab32((u32) y);
-#endif
-}
-
-static __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned long size, unsigned long offset)
-{
- unsigned long *p = (unsigned long *) addr + (offset >> SHIFT_PER_LONG);
- unsigned long result = offset & ~(BITS_PER_LONG - 1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= (BITS_PER_LONG - 1UL);
- if (offset) {
- tmp = ext2_swabp(p++);
- tmp |= (~0UL >> (BITS_PER_LONG - offset));
- if (size < BITS_PER_LONG)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
-
- while (size & ~(BITS_PER_LONG - 1)) {
- if (~(tmp = *(p++)))
- goto found_middle_swap;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = ext2_swabp(p);
-found_first:
- tmp |= ~0UL << size;
- if (tmp == ~0UL) /* Are any bits zero? */
- return result + size; /* Nope. Skip ffz */
-found_middle:
- return result + ffz(tmp);
-
-found_middle_swap:
- return result + ffz(ext2_swab(tmp));
-}
-
-
-/* Bitmap functions for the minix filesystem. */
-#define minix_test_and_set_bit(nr,addr) ext2_set_bit(nr,addr)
-#define minix_set_bit(nr,addr) ((void)ext2_set_bit(nr,addr))
-#define minix_test_and_clear_bit(nr,addr) ext2_clear_bit(nr,addr)
-#define minix_test_bit(nr,addr) ext2_test_bit(nr,addr)
-#define minix_find_first_zero_bit(addr,size) ext2_find_first_zero_bit(addr,size)
+#include <asm-generic/bitops/minix-le.h>
#endif /* _PARISC_BITOPS_H */
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