- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove generic_fls64()
- 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()
- remove sched_find_first_bit()
Signed-off-by: Akinobu Mita <[email protected]>
arch/ia64/lib/Makefile | 2
arch/ia64/lib/bitop.c | 88 ------------------------
include/asm-ia64/bitops.h | 168 ++++------------------------------------------
3 files changed, 19 insertions(+), 239 deletions(-)
Index: 2.6-git/include/asm-ia64/bitops.h
===================================================================
--- 2.6-git.orig/include/asm-ia64/bitops.h
+++ 2.6-git/include/asm-ia64/bitops.h
@@ -5,8 +5,8 @@
* Copyright (C) 1998-2003 Hewlett-Packard Co
* David Mosberger-Tang <[email protected]>
*
- * 02/06/02 find_next_bit() and find_first_bit() added from Erich Focht's ia64 O(1)
- * scheduler patch
+ * 02/06/02 find_next_bit() and find_first_bit() added from Erich Focht's ia64
+ * O(1) scheduler patch
*/
#include <linux/compiler.h>
@@ -25,9 +25,9 @@
* restricted to acting on a single-word quantity.
*
* The address must be (at least) "long" aligned.
- * Note that there are driver (e.g., eepro100) which use these operations to operate on
- * hw-defined data-structures, so we can't easily change these operations to force a
- * bigger alignment.
+ * Note that there are driver (e.g., eepro100) which use these operations to
+ * operate on hw-defined data-structures, so we can't easily change these
+ * operations to force a bigger alignment.
*
* bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
*/
@@ -47,21 +47,6 @@ set_bit (int nr, volatile void *addr)
} while (cmpxchg_acq(m, old, new) != old);
}
-/**
- * __set_bit - Set a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * Unlike set_bit(), this function is non-atomic and may be reordered.
- * If it's called on the same region of memory simultaneously, the effect
- * may be that only one operation succeeds.
- */
-static __inline__ void
-__set_bit (int nr, volatile void *addr)
-{
- *((__u32 *) addr + (nr >> 5)) |= (1 << (nr & 31));
-}
-
/*
* clear_bit() has "acquire" semantics.
*/
@@ -95,17 +80,6 @@ clear_bit (int nr, volatile void *addr)
}
/**
- * __clear_bit - Clears a bit in memory (non-atomic version)
- */
-static __inline__ void
-__clear_bit (int nr, volatile void *addr)
-{
- volatile __u32 *p = (__u32 *) addr + (nr >> 5);
- __u32 m = 1 << (nr & 31);
- *p &= ~m;
-}
-
-/**
* change_bit - Toggle a bit in memory
* @nr: Bit to clear
* @addr: Address to start counting from
@@ -131,21 +105,6 @@ change_bit (int nr, volatile void *addr)
}
/**
- * __change_bit - Toggle a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * Unlike change_bit(), this function is non-atomic and may be reordered.
- * If it's called on the same region of memory simultaneously, the effect
- * may be that only one operation succeeds.
- */
-static __inline__ void
-__change_bit (int nr, volatile void *addr)
-{
- *((__u32 *) addr + (nr >> 5)) ^= (1 << (nr & 31));
-}
-
-/**
* test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
@@ -171,26 +130,6 @@ test_and_set_bit (int nr, volatile void
}
/**
- * __test_and_set_bit - Set a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is non-atomic and can be reordered.
- * If two examples of this operation race, one can appear to succeed
- * but actually fail. You must protect multiple accesses with a lock.
- */
-static __inline__ int
-__test_and_set_bit (int nr, volatile void *addr)
-{
- __u32 *p = (__u32 *) addr + (nr >> 5);
- __u32 m = 1 << (nr & 31);
- int oldbitset = (*p & m) != 0;
-
- *p |= m;
- return oldbitset;
-}
-
-/**
* test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
@@ -216,26 +155,6 @@ test_and_clear_bit (int nr, volatile voi
}
/**
- * __test_and_clear_bit - Clear a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is non-atomic and can be reordered.
- * If two examples of this operation race, one can appear to succeed
- * but actually fail. You must protect multiple accesses with a lock.
- */
-static __inline__ int
-__test_and_clear_bit(int nr, volatile void * addr)
-{
- __u32 *p = (__u32 *) addr + (nr >> 5);
- __u32 m = 1 << (nr & 31);
- int oldbitset = *p & m;
-
- *p &= ~m;
- return oldbitset;
-}
-
-/**
* test_and_change_bit - Change a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
@@ -260,32 +179,14 @@ test_and_change_bit (int nr, volatile vo
return (old & bit) != 0;
}
-/*
- * WARNING: non atomic version.
- */
-static __inline__ int
-__test_and_change_bit (int nr, void *addr)
-{
- __u32 old, bit = (1 << (nr & 31));
- __u32 *m = (__u32 *) addr + (nr >> 5);
-
- old = *m;
- *m = old ^ bit;
- return (old & bit) != 0;
-}
-
-static __inline__ int
-test_bit (int nr, const volatile void *addr)
-{
- return 1 & (((const volatile __u32 *) addr)[nr >> 5] >> (nr & 31));
-}
+#include <asm-generic/bitops/non-atomic.h>
/**
* ffz - find the first zero bit in a long word
* @x: The long word to find the bit in
*
- * Returns the bit-number (0..63) of the first (least significant) zero bit. Undefined if
- * no zero exists, so code should check against ~0UL first...
+ * Returns the bit-number (0..63) of the first (least significant) zero bit.
+ * Undefined if no zero exists, so code should check against ~0UL first...
*/
static inline unsigned long
ffz (unsigned long x)
@@ -345,13 +246,14 @@ fls (int t)
x |= x >> 16;
return ia64_popcnt(x);
}
-#define fls64(x) generic_fls64(x)
+
+#include <asm-generic/bitops/fls64.h>
/*
- * 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): it operates on
- * "int" values only and the result value is the bit number + 1. ffs(0) is defined to
- * return zero.
+ * 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): it operates on "int" values only and the result value is the
+ * bit number + 1. ffs(0) is defined to return zero.
*/
#define ffs(x) __builtin_ffs(x)
@@ -373,51 +275,17 @@ hweight64 (unsigned long x)
#endif /* __KERNEL__ */
-extern int __find_next_zero_bit (const void *addr, unsigned long size,
- unsigned long offset);
-extern int __find_next_bit(const void *addr, unsigned long size,
- unsigned long offset);
-
-#define find_next_zero_bit(addr, size, offset) \
- __find_next_zero_bit((addr), (size), (offset))
-#define find_next_bit(addr, size, offset) \
- __find_next_bit((addr), (size), (offset))
-
-/*
- * The optimizer actually does good code for this case..
- */
-#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
-
-#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
+#include <asm-generic/bitops/find.h>
#ifdef __KERNEL__
-#define __clear_bit(nr, addr) clear_bit(nr, addr)
+#include <asm-generic/bitops/ext2-non-atomic.h>
-#define ext2_set_bit __test_and_set_bit
#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a)
-#define ext2_clear_bit __test_and_clear_bit
#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
-#define ext2_test_bit test_bit
-#define ext2_find_first_zero_bit find_first_zero_bit
-#define ext2_find_next_zero_bit find_next_zero_bit
-
-/* 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)
-static inline int
-sched_find_first_bit (unsigned long *b)
-{
- if (unlikely(b[0]))
- return __ffs(b[0]);
- if (unlikely(b[1]))
- return 64 + __ffs(b[1]);
- return __ffs(b[2]) + 128;
-}
+#include <asm-generic/bitops/minix.h>
+#include <asm-generic/bitops/sched.h>
#endif /* __KERNEL__ */
Index: 2.6-git/arch/ia64/lib/Makefile
===================================================================
--- 2.6-git.orig/arch/ia64/lib/Makefile
+++ 2.6-git/arch/ia64/lib/Makefile
@@ -6,7 +6,7 @@ obj-y := io.o
lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o \
__divdi3.o __udivdi3.o __moddi3.o __umoddi3.o \
- bitop.o checksum.o clear_page.o csum_partial_copy.o \
+ checksum.o clear_page.o csum_partial_copy.o \
clear_user.o strncpy_from_user.o strlen_user.o strnlen_user.o \
flush.o ip_fast_csum.o do_csum.o \
memset.o strlen.o
Index: 2.6-git/arch/ia64/lib/bitop.c
===================================================================
--- 2.6-git.orig/arch/ia64/lib/bitop.c
+++ /dev/null
@@ -1,88 +0,0 @@
-#include <linux/compiler.h>
-#include <linux/types.h>
-#include <asm/intrinsics.h>
-#include <linux/module.h>
-#include <linux/bitops.h>
-
-/*
- * Find next zero bit in a bitmap reasonably efficiently..
- */
-
-int __find_next_zero_bit (const void *addr, unsigned long size, unsigned long offset)
-{
- unsigned long *p = ((unsigned long *) 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) /* any bits zero? */
- return result + size; /* nope */
-found_middle:
- return result + ffz(tmp);
-}
-EXPORT_SYMBOL(__find_next_zero_bit);
-
-/*
- * Find next bit in a bitmap reasonably efficiently..
- */
-int __find_next_bit(const void *addr, unsigned long size, unsigned long offset)
-{
- unsigned long *p = ((unsigned long *) 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);
-}
-EXPORT_SYMBOL(__find_next_bit);
--
-
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