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 #ifdef CONFIG_BUG
   7 #ifndef HAVE_ARCH_BUG
   8 #define BUG() do { \
   9         printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
  10         panic("BUG!"); \
  11 } while (0)
  12 #endif
  13
  14 #ifndef HAVE_ARCH_BUG_ON
  15 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
  16 #endif
  17
  18 #ifndef HAVE_ARCH_WARN_ON
  19 #define WARN_ON(condition) do { \
  20         if (unlikely((condition)!=0)) { \
  21                 printk("BUG: warning at %s:%d/%s()\n", __FILE__, __LINE__, __FUNCTION__); \
  22                 dump_stack(); \
  23         } \
  24 } while (0)
  25 #endif
  26
  27 #else /* !CONFIG_BUG */
  28 #ifndef HAVE_ARCH_BUG
  29 #define BUG()
  30 #endif
  31
  32 #ifndef HAVE_ARCH_BUG_ON
  33 #define BUG_ON(condition) do { if (condition) ; } while(0)
  34 #endif
  35
  36 #ifndef HAVE_ARCH_WARN_ON
  37 #define WARN_ON(condition) do { if (condition) ; } while(0)
  38 #endif
  39 #endif
  40
  41 #define WARN_ON_ONCE(condition)                         \
  42 ({                                                      \
  43         static int __warn_once = 1;                     \
  44         int __ret = 0;                                  \
  45                                                         \
  46         if (unlikely((condition) && __warn_once)) {     \
  47                 __warn_once = 0;                        \
  48                 WARN_ON(1);                             \
  49                 __ret = 1;                              \
  50         }                                               \
  51         __ret;                                          \
  52 })
  53
  54 #ifdef CONFIG_SMP
  55 # define WARN_ON_SMP(x)                 WARN_ON(x)
  56 #else
  57 # define WARN_ON_SMP(x)                 do { } while (0)
  58 #endif
  59
  60 #endif