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_ONCE(condition) ({                      \
  16         static int __warned;                            \
  17         int __ret_warn_once = !!(condition);            \
  18                                                         \
  19         if (unlikely(__ret_warn_once && !__warned)) {   \
  20                 __warned = true;                        \
  21                 WARN_ON(1);                             \
  22         }                                               \
  23         unlikely(__ret_warn_once);                      \
  24 })
  25
  26 #define WARN_ONCE(condition, format...) ({      \
  27         static int __warned;                    \
  28         int __ret_warn_once = !!(condition);    \
  29                                                 \
  30         if (unlikely(__ret_warn_once))          \
  31                 if (WARN(!__warned, format))    \
  32                         __warned = 1;           \
  33         unlikely(__ret_warn_once);              \
  34 })
  35
  36 #endif /* _TOOLS_ASM_BUG_H */