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) ({                                           \
  20         typeof(condition) __ret_warn_on = (condition);                  \
  21         if (unlikely(__ret_warn_on)) {                                  \
  22                 printk("BUG: warning at %s:%d/%s()\n", __FILE__,        \
  23                         __LINE__, __FUNCTION__);                        \
  24                 dump_stack();                                           \
  25         }                                                               \
  26         unlikely(__ret_warn_on);                                        \
  27 })
  28 #endif
  29
  30 #else /* !CONFIG_BUG */
  31 #ifndef HAVE_ARCH_BUG
  32 #define BUG()
  33 #endif
  34
  35 #ifndef HAVE_ARCH_BUG_ON
  36 #define BUG_ON(condition) do { if (condition) ; } while(0)
  37 #endif
  38
  39 #ifndef HAVE_ARCH_WARN_ON
  40 #define WARN_ON(condition) ({                                           \
  41         typeof(condition) __ret_warn_on = (condition);                  \
  42         unlikely(__ret_warn_on);                                        \
  43 })
  44 #endif
  45 #endif
  46
  47 #define WARN_ON_ONCE(condition) ({                              \
  48         static int __warned;                                    \
  49         typeof(condition) __ret_warn_once = (condition);        \
  50                                                                 \
  51         if (unlikely(__ret_warn_once))                          \
  52                 if (WARN_ON(!__warned))                         \
  53                         __warned = 1;                           \
  54         unlikely(__ret_warn_once);                              \
  55 })
  56
  57 #ifdef CONFIG_SMP
  58 # define WARN_ON_SMP(x)                 WARN_ON(x)
  59 #else
  60 # define WARN_ON_SMP(x)                 do { } while (0)
  61 #endif
  62
  63 #endif