Merge tag 'byteswap-for-linus-20121219' of git://git.infradead.org/users/dwmw2/byteswap

[~andy/linux] / arch / x86 / include / asm / cmpxchg_32.h

diff --git a/arch/x86/include/asm/cmpxchg_32.h b/arch/x86/include/asm/cmpxchg_32.h
index 53f4b219336be527e017c821eee57b7bcd1bd966..f8bf2eecab864f4d00bcd4cd2a47d4611e422787 100644 (file)
--- a/arch/x86/include/asm/cmpxchg_32.h
+++ b/arch/x86/include/asm/cmpxchg_32.h
@@ -34,9 +34,7 @@ static inline void set_64bit(volatile u64 *ptr, u64 value)
                     : "memory");
 }
 
-#ifdef CONFIG_X86_CMPXCHG
 #define __HAVE_ARCH_CMPXCHG 1
-#endif
 
 #ifdef CONFIG_X86_CMPXCHG64
 #define cmpxchg64(ptr, o, n)                                           \
@@ -73,59 +71,6 @@ static inline u64 __cmpxchg64_local(volatile u64 *ptr, u64 old, u64 new)
        return prev;
 }
 
-#ifndef CONFIG_X86_CMPXCHG
-/*
- * Building a kernel capable running on 80386. It may be necessary to
- * simulate the cmpxchg on the 80386 CPU. For that purpose we define
- * a function for each of the sizes we support.
- */
-
-extern unsigned long cmpxchg_386_u8(volatile void *, u8, u8);
-extern unsigned long cmpxchg_386_u16(volatile void *, u16, u16);
-extern unsigned long cmpxchg_386_u32(volatile void *, u32, u32);
-
-static inline unsigned long cmpxchg_386(volatile void *ptr, unsigned long old,
-                                       unsigned long new, int size)
-{
-       switch (size) {
-       case 1:
-               return cmpxchg_386_u8(ptr, old, new);
-       case 2:
-               return cmpxchg_386_u16(ptr, old, new);
-       case 4:
-               return cmpxchg_386_u32(ptr, old, new);
-       }
-       return old;
-}
-
-#define cmpxchg(ptr, o, n)                                             \
-({                                                                     \
-       __typeof__(*(ptr)) __ret;                                       \
-       if (likely(boot_cpu_data.x86 > 3))                              \
-               __ret = (__typeof__(*(ptr)))__cmpxchg((ptr),            \
-                               (unsigned long)(o), (unsigned long)(n), \
-                               sizeof(*(ptr)));                        \
-       else                                                            \
-               __ret = (__typeof__(*(ptr)))cmpxchg_386((ptr),          \
-                               (unsigned long)(o), (unsigned long)(n), \
-                               sizeof(*(ptr)));                        \
-       __ret;                                                          \
-})
-#define cmpxchg_local(ptr, o, n)                                       \
-({                                                                     \
-       __typeof__(*(ptr)) __ret;                                       \
-       if (likely(boot_cpu_data.x86 > 3))                              \
-               __ret = (__typeof__(*(ptr)))__cmpxchg_local((ptr),      \
-                               (unsigned long)(o), (unsigned long)(n), \
-                               sizeof(*(ptr)));                        \
-       else                                                            \
-               __ret = (__typeof__(*(ptr)))cmpxchg_386((ptr),          \
-                               (unsigned long)(o), (unsigned long)(n), \
-                               sizeof(*(ptr)));                        \
-       __ret;                                                          \
-})
-#endif
-
 #ifndef CONFIG_X86_CMPXCHG64
 /*
  * Building a kernel capable running on 80386 and 80486. It may be necessary