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authorAlexander van Heukelum <heukelum@mailshack.com>2008-04-01 17:47:57 +0200
committerIngo Molnar <mingo@elte.hu>2008-04-26 19:21:17 +0200
commit5245698f665c4b7a533dcc47a5afdf33095d436a (patch)
tree5e417154f181e523c8491ec263eb71fbaf8ec0da /include
parent3a48305028aa38afba93fc05066c71a6ee668ad8 (diff)
x86, UML: remove x86-specific implementations of find_first_bit
x86 has been switched to the generic versions of find_first_bit and find_first_zero_bit, but the original versions were retained. This patch just removes the now unused x86-specific versions. also update UML. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/bitops_32.h58
-rw-r--r--include/asm-x86/bitops_64.h23
2 files changed, 0 insertions, 81 deletions
diff --git a/include/asm-x86/bitops_32.h b/include/asm-x86/bitops_32.h
index ba2c0defafa8..2e863021bf81 100644
--- a/include/asm-x86/bitops_32.h
+++ b/include/asm-x86/bitops_32.h
@@ -4,64 +4,6 @@
/*
* Copyright 1992, Linus Torvalds.
*/
-
-#ifndef CONFIG_GENERIC_FIND_FIRST_BIT
-/**
- * find_first_zero_bit - find the first zero 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 zero bit, not the number of the byte
- * containing a bit.
- */
-static inline int find_first_zero_bit(const unsigned long *addr, unsigned size)
-{
- int d0, d1, d2;
- int res;
-
- if (!size)
- return 0;
- /* This looks at memory.
- * Mark it volatile to tell gcc not to move it around
- */
- asm volatile("movl $-1,%%eax\n\t"
- "xorl %%edx,%%edx\n\t"
- "repe; scasl\n\t"
- "je 1f\n\t"
- "xorl -4(%%edi),%%eax\n\t"
- "subl $4,%%edi\n\t"
- "bsfl %%eax,%%edx\n"
- "1:\tsubl %%ebx,%%edi\n\t"
- "shll $3,%%edi\n\t"
- "addl %%edi,%%edx"
- : "=d" (res), "=&c" (d0), "=&D" (d1), "=&a" (d2)
- : "1" ((size + 31) >> 5), "2" (addr),
- "b" (addr) : "memory");
- return res;
-}
-
-/**
- * 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.
- */
-static inline unsigned find_first_bit(const unsigned long *addr, unsigned size)
-{
- unsigned x = 0;
-
- while (x < size) {
- unsigned long val = *addr++;
- if (val)
- return __ffs(val) + x;
- x += sizeof(*addr) << 3;
- }
- return x;
-}
-#endif
-
#ifdef __KERNEL__
#include <asm-generic/bitops/sched.h>
diff --git a/include/asm-x86/bitops_64.h b/include/asm-x86/bitops_64.h
index 4081d7ecc2bd..cb23122d23f1 100644
--- a/include/asm-x86/bitops_64.h
+++ b/include/asm-x86/bitops_64.h
@@ -4,29 +4,6 @@
/*
* Copyright 1992, Linus Torvalds.
*/
-
-#ifndef CONFIG_GENERIC_FIND_FIRST_BIT
-extern long find_first_zero_bit(const unsigned long *addr, unsigned long size);
-extern long find_first_bit(const unsigned long *addr, unsigned long size);
-
-/* 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)
-{
- asm("bsfq %1,%0 ; cmovz %2,%0" : "=&r" (val) : "r" (val), "r" (max));
- return val;
-}
-
-#define find_first_bit(addr, size) \
- ((__builtin_constant_p((size)) && (size) <= BITS_PER_LONG \
- ? (__scanbit(*(unsigned long *)(addr), (size))) \
- : find_first_bit((addr), (size))))
-
-#define find_first_zero_bit(addr, size) \
- ((__builtin_constant_p((size)) && (size) <= BITS_PER_LONG \
- ? (__scanbit(~*(unsigned long *)(addr), (size))) \
- : find_first_zero_bit((addr), (size))))
-#endif
-
static inline void set_bit_string(unsigned long *bitmap, unsigned long i,
int len)
{