tools/include/asm/bug.h

   1 #ifndef _TOOLS_ASM_BUG_H
   2 #define _TOOLS_ASM_BUG_H
   3
   4 #include <linux/compiler.h>
   5
   6 #define __WARN_printf(arg...)   do { fprintf(stderr, arg); } while (0)
   7
   8 #define WARN(condition, format...) ({           \
   9         int __ret_warn_on = !!(condition);      \
  10         if (unlikely(__ret_warn_on))            \
  11                 __WARN_printf(format);          \
  12         unlikely(__ret_warn_on);                \
  13 })
  14
  15 #define WARN_ON(condition) ({                                   \
  16         int __ret_warn_on = !!(condition);                      \
  17         if (unlikely(__ret_warn_on))                            \
  18                 __WARN_printf("assertion failed at %s:%d\n",    \
  19                                 __FILE__, __LINE__);            \
  20         unlikely(__ret_warn_on);                                \
  21 })
  22
  23 #define WARN_ON_ONCE(condition) ({                      \
  24         static int __warned;                            \
  25         int __ret_warn_once = !!(condition);            \
  26                                                         \
  27         if (unlikely(__ret_warn_once && !__warned)) {   \
  28                 __warned = true;                        \
  29                 WARN_ON(1);                             \
  30         }                                               \
  31         unlikely(__ret_warn_once);                      \
  32 })
  33
  34 #define WARN_ONCE(condition, format...) ({      \
  35         static int __warned;                    \
  36         int __ret_warn_once = !!(condition);    \
  37                                                 \
  38         if (unlikely(__ret_warn_once))          \
  39                 if (WARN(!__warned, format))    \
  40                         __warned = 1;           \
  41         unlikely(__ret_warn_once);              \
  42 })
  43
  44 #endif /* _TOOLS_ASM_BUG_H */