diff options
Diffstat (limited to 'arch/x86/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/x86/include/asm/cmpxchg.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h index 0d0d9cdd3309..5d3acdf5a7a6 100644 --- a/arch/x86/include/asm/cmpxchg.h +++ b/arch/x86/include/asm/cmpxchg.h @@ -1,12 +1,19 @@ #ifndef ASM_X86_CMPXCHG_H #define ASM_X86_CMPXCHG_H +#include <linux/compiler.h> #include <asm/alternative.h> /* Provides LOCK_PREFIX */ -/* Non-existant functions to indicate usage errors at link time. */ -extern void __xchg_wrong_size(void); -extern void __cmpxchg_wrong_size(void); -extern void __xadd_wrong_size(void); +/* + * Non-existant functions to indicate usage errors at link time + * (or compile-time if the compiler implements __compiletime_error(). + */ +extern void __xchg_wrong_size(void) + __compiletime_error("Bad argument size for xchg"); +extern void __cmpxchg_wrong_size(void) + __compiletime_error("Bad argument size for cmpxchg"); +extern void __xadd_wrong_size(void) + __compiletime_error("Bad argument size for xadd"); /* * Constants for operation sizes. On 32-bit, the 64-bit size it set to |