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-rw-r--r--arch/x86/Kconfig3
-rw-r--r--arch/x86/lib/Makefile2
-rw-r--r--arch/x86/lib/bitops_32.c70
-rw-r--r--arch/x86/lib/bitops_64.c68
-rw-r--r--include/asm-x86/bitops.h6
-rw-r--r--include/asm-x86/bitops_32.h16
-rw-r--r--include/asm-x86/bitops_64.h2
-rw-r--r--lib/find_next_bit.c2
8 files changed, 12 insertions, 157 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2fadf79..5639de4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -77,6 +77,9 @@ config GENERIC_BUG
def_bool y
depends on BUG
+config GENERIC_FIND_NEXT_BIT
+ def_bool y
+
config GENERIC_HWEIGHT
def_bool y
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 25df1c1..4360932 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -11,7 +11,7 @@ lib-y += memcpy_$(BITS).o
ifeq ($(CONFIG_X86_32),y)
lib-y += checksum_32.o
lib-y += strstr_32.o
- lib-y += bitops_32.o semaphore_32.o string_32.o
+ lib-y += semaphore_32.o string_32.o
lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
else
diff --git a/arch/x86/lib/bitops_32.c b/arch/x86/lib/bitops_32.c
deleted file mode 100644
index b654404..0000000
--- a/arch/x86/lib/bitops_32.c
+++ /dev/null
@@ -1,70 +0,0 @@
-#include <linux/bitops.h>
-#include <linux/module.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
- */
-int find_next_bit(const unsigned long *addr, int size, int offset)
-{
- const unsigned long *p = addr + (offset >> 5);
- int set = 0, bit = offset & 31, res;
-
- if (bit) {
- /*
- * Look for nonzero in the first 32 bits:
- */
- __asm__("bsfl %1,%0\n\t"
- "jne 1f\n\t"
- "movl $32, %0\n"
- "1:"
- : "=r" (set)
- : "r" (*p >> bit));
- if (set < (32 - bit))
- return set + offset;
- set = 32 - bit;
- p++;
- }
- /*
- * No set bit yet, search remaining full words for a bit
- */
- res = find_first_bit (p, size - 32 * (p - addr));
- return (offset + set + res);
-}
-EXPORT_SYMBOL(find_next_bit);
-
-/**
- * find_next_zero_bit - find the first zero 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
- */
-int find_next_zero_bit(const unsigned long *addr, int size, int offset)
-{
- const unsigned long *p = addr + (offset >> 5);
- int set = 0, bit = offset & 31, res;
-
- if (bit) {
- /*
- * Look for zero in the first 32 bits.
- */
- __asm__("bsfl %1,%0\n\t"
- "jne 1f\n\t"
- "movl $32, %0\n"
- "1:"
- : "=r" (set)
- : "r" (~(*p >> bit)));
- if (set < (32 - bit))
- return set + offset;
- set = 32 - bit;
- p++;
- }
- /*
- * No zero yet, search remaining full bytes for a zero
- */
- res = find_first_zero_bit(p, size - 32 * (p - addr));
- return (offset + set + res);
-}
-EXPORT_SYMBOL(find_next_zero_bit);
diff --git a/arch/x86/lib/bitops_64.c b/arch/x86/lib/bitops_64.c
index 0e8f491..0eeb704 100644
--- a/arch/x86/lib/bitops_64.c
+++ b/arch/x86/lib/bitops_64.c
@@ -1,9 +1,7 @@
#include <linux/bitops.h>
#undef find_first_zero_bit
-#undef find_next_zero_bit
#undef find_first_bit
-#undef find_next_bit
static inline long
__find_first_zero_bit(const unsigned long * addr, unsigned long size)
@@ -57,39 +55,6 @@ long find_first_zero_bit(const unsigned long * addr, unsigned long size)
return __find_first_zero_bit (addr, size);
}
-/**
- * find_next_zero_bit - find the next zero 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
- */
-long find_next_zero_bit (const unsigned long * addr, long size, long offset)
-{
- const unsigned long * p = addr + (offset >> 6);
- unsigned long set = 0;
- unsigned long res, bit = offset&63;
-
- if (bit) {
- /*
- * Look for zero in first word
- */
- asm("bsfq %1,%0\n\t"
- "cmoveq %2,%0"
- : "=r" (set)
- : "r" (~(*p >> bit)), "r"(64L));
- if (set < (64 - bit))
- return set + offset;
- set = 64 - bit;
- p++;
- }
- /*
- * No zero yet, search remaining full words for a zero
- */
- res = __find_first_zero_bit (p, size - 64 * (p - addr));
-
- return (offset + set + res);
-}
-
static inline long
__find_first_bit(const unsigned long * addr, unsigned long size)
{
@@ -136,40 +101,7 @@ long find_first_bit(const unsigned long * addr, unsigned long size)
return __find_first_bit(addr,size);
}
-/**
- * find_next_bit - find the first 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
- */
-long find_next_bit(const unsigned long * addr, long size, long offset)
-{
- const unsigned long * p = addr + (offset >> 6);
- unsigned long set = 0, bit = offset & 63, res;
-
- if (bit) {
- /*
- * Look for nonzero in the first 64 bits:
- */
- asm("bsfq %1,%0\n\t"
- "cmoveq %2,%0\n\t"
- : "=r" (set)
- : "r" (*p >> bit), "r" (64L));
- if (set < (64 - bit))
- return set + offset;
- set = 64 - bit;
- p++;
- }
- /*
- * No set bit yet, search remaining full words for a bit
- */
- res = __find_first_bit (p, size - 64 * (p - addr));
- return (offset + set + res);
-}
-
#include <linux/module.h>
-EXPORT_SYMBOL(find_next_bit);
EXPORT_SYMBOL(find_first_bit);
EXPORT_SYMBOL(find_first_zero_bit);
-EXPORT_SYMBOL(find_next_zero_bit);
diff --git a/include/asm-x86/bitops.h b/include/asm-x86/bitops.h
index 1ae7b27..31e408d 100644
--- a/include/asm-x86/bitops.h
+++ b/include/asm-x86/bitops.h
@@ -306,6 +306,12 @@ static int test_bit(int nr, const volatile unsigned long *addr);
#undef BIT_ADDR
#undef ADDR
+unsigned long find_next_bit(const unsigned long *addr,
+ unsigned long size, unsigned long offset);
+unsigned long find_next_zero_bit(const unsigned long *addr,
+ unsigned long size, unsigned long offset);
+
+
#ifdef CONFIG_X86_32
# include "bitops_32.h"
#else
diff --git a/include/asm-x86/bitops_32.h b/include/asm-x86/bitops_32.h
index 2513a81..7c9ed75 100644
--- a/include/asm-x86/bitops_32.h
+++ b/include/asm-x86/bitops_32.h
@@ -40,14 +40,6 @@ static inline int find_first_zero_bit(const unsigned long *addr, unsigned size)
}
/**
- * find_next_zero_bit - find the first zero bit in a memory region
- * @addr: The address to base the search on
- * @offset: The bit number to start searching at
- * @size: The maximum size to search
- */
-int find_next_zero_bit(const unsigned long *addr, int size, int offset);
-
-/**
* __ffs - find first bit in word.
* @word: The word to search
*
@@ -83,14 +75,6 @@ static inline unsigned find_first_bit(const unsigned long *addr, unsigned size)
}
/**
- * find_next_bit - find the first set bit in a memory region
- * @addr: The address to base the search on
- * @offset: The bit number to start searching at
- * @size: The maximum size to search
- */
-int find_next_bit(const unsigned long *addr, int size, int offset);
-
-/**
* ffz - find first zero in word.
* @word: The word to search
*
diff --git a/include/asm-x86/bitops_64.h b/include/asm-x86/bitops_64.h
index 365f820..65b20fb 100644
--- a/include/asm-x86/bitops_64.h
+++ b/include/asm-x86/bitops_64.h
@@ -6,9 +6,7 @@
*/
extern long find_first_zero_bit(const unsigned long *addr, unsigned long size);
-extern long find_next_zero_bit(const unsigned long *addr, long size, long offset);
extern long find_first_bit(const unsigned long *addr, unsigned long size);
-extern long find_next_bit(const unsigned long *addr, long size, long offset);
/* return index of first bet set in val or max when no bit is set */
static inline long __scanbit(unsigned long val, unsigned long max)
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c
index 78ccd73..5820e07 100644
--- a/lib/find_next_bit.c
+++ b/lib/find_next_bit.c
@@ -15,6 +15,8 @@
#include <asm/byteorder.h>
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
+#undef find_next_bit
+#undef find_next_zero_bit
/**
* find_next_bit - find the next set bit in a memory region
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