include/asm-generic/bug.h

   1 #ifndef _ASM_GENERIC_BUG_H
   2 #define _ASM_GENERIC_BUG_H
   3
   4 #include <linux/compiler.h>
   5
   6 #ifndef __ASSEMBLY__
   7 extern const char *print_tainted(void);
   8 #endif
   9
  10 #ifdef CONFIG_BUG
  11 #ifndef HAVE_ARCH_BUG
  12 #define BUG() do { \
  13         printk("BUG: failure at %s:%d/%s()! (%s)\n", __FILE__, __LINE__, __FUNCTION__, print_tainted()); \
  14         panic("BUG!"); \
  15 } while (0)
  16 #endif
  17
  18 #ifndef HAVE_ARCH_BUG_ON
  19 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
  20 #endif
  21
  22 #ifndef HAVE_ARCH_WARN_ON
  23 #define WARN_ON(condition) do { \
  24         if (unlikely((condition)!=0)) { \
  25                 printk("BUG: warning at %s:%d/%s() (%s)\n", __FILE__, __LINE__, __FUNCTION__, print_tainted()); \
  26                 dump_stack(); \
  27         } \
  28 } while (0)
  29 #endif
  30
  31 #else /* !CONFIG_BUG */
  32 #ifndef HAVE_ARCH_BUG
  33 #define BUG()
  34 #endif
  35
  36 #ifndef HAVE_ARCH_BUG_ON
  37 #define BUG_ON(condition) do { \
  38         if (unlikely((condition)!=0)) { \
  39                 printk("BUGging on (%s)\n", #condition); \
  40                 BUG(); \
  41         } \
  42 } while(0)
  43 #endif
  44
  45 #ifndef HAVE_ARCH_WARN_ON
  46 #define WARN_ON(condition) do { \
  47         if (unlikely((condition)!=0)) { \
  48                 printk("BUG: warning: (%s) at %s:%d/%s()\n", \
  49                         #condition, __FILE__, __LINE__, __FUNCTION__); \
  50                 dump_stack(); \
  51         } \
  52 } while (0)
  53 #endif
  54 #endif
  55
  56 #define WARN_ON_ONCE(condition)                         \
  57 ({                                                      \
  58         static int __warn_once = 1;                     \
  59         int __ret = 0;                                  \
  60                                                         \
  61         if (unlikely((condition) && __warn_once)) {     \
  62                 __warn_once = 0;                        \
  63                 WARN_ON(condition);                             \
  64                 __ret = 1;                              \
  65         }                                               \
  66         __ret;                                          \
  67 })
  68
  69 #ifdef CONFIG_SMP
  70 # define WARN_ON_SMP(x)                 WARN_ON(x)
  71 #else
  72 # define WARN_ON_SMP(x)                 do { } while (0)
  73 #endif
  74
  75 #endif