|  | #ifndef _ASM_GENERIC_BUG_H | 
|  | #define _ASM_GENERIC_BUG_H | 
|  |  | 
|  | #include <linux/compiler.h> | 
|  |  | 
|  | #ifdef CONFIG_BUG | 
|  | #ifndef HAVE_ARCH_BUG | 
|  | #define BUG() do { \ | 
|  | printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \ | 
|  | panic("BUG!"); \ | 
|  | } while (0) | 
|  | #endif | 
|  |  | 
|  | #ifndef HAVE_ARCH_BUG_ON | 
|  | #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0) | 
|  | #endif | 
|  |  | 
|  | #ifndef HAVE_ARCH_WARN_ON | 
|  | #define WARN_ON(condition) ({						\ | 
|  | typeof(condition) __ret_warn_on = (condition);			\ | 
|  | if (unlikely(__ret_warn_on)) {					\ | 
|  | printk("BUG: warning at %s:%d/%s()\n", __FILE__,	\ | 
|  | __LINE__, __FUNCTION__);			\ | 
|  | dump_stack();						\ | 
|  | }								\ | 
|  | unlikely(__ret_warn_on);					\ | 
|  | }) | 
|  | #endif | 
|  |  | 
|  | #else /* !CONFIG_BUG */ | 
|  | #ifndef HAVE_ARCH_BUG | 
|  | #define BUG() | 
|  | #endif | 
|  |  | 
|  | #ifndef HAVE_ARCH_BUG_ON | 
|  | #define BUG_ON(condition) do { if (condition) ; } while(0) | 
|  | #endif | 
|  |  | 
|  | #ifndef HAVE_ARCH_WARN_ON | 
|  | #define WARN_ON(condition) unlikely((condition)) | 
|  | #endif | 
|  | #endif | 
|  |  | 
|  | #define WARN_ON_ONCE(condition)	({			\ | 
|  | static int __warn_once = 1;			\ | 
|  | typeof(condition) __ret_warn_once = (condition);\ | 
|  | \ | 
|  | if (likely(__warn_once))			\ | 
|  | if (WARN_ON(__ret_warn_once)) 		\ | 
|  | __warn_once = 0;		\ | 
|  | unlikely(__ret_warn_once);			\ | 
|  | }) | 
|  |  | 
|  | #ifdef CONFIG_SMP | 
|  | # define WARN_ON_SMP(x)			WARN_ON(x) | 
|  | #else | 
|  | # define WARN_ON_SMP(x)			do { } while (0) | 
|  | #endif | 
|  |  | 
|  | #endif |