datapath/linux-2.6/compat-2.6/include/asm-generic/bug.h

   1 #ifndef __ASM_GENERIC_BUG_WRAPPER_H
   2 #define __ASM_GENERIC_BUG_WRAPPER_H
   3
   4 #include_next <asm-generic/bug.h>
   5
   6 #ifndef WARN_ON_ONCE
   7 #define WARN_ON_ONCE(condition) ({                              \
   8         static int __warned;                                    \
   9         int __ret_warn_once = !!(condition);                    \
  10                                                                 \
  11         if (unlikely(__ret_warn_once) && !__warned) {           \
  12                 WARN_ON(1);                                     \
  13                 __warned = 1;                                   \
  14         }                                                       \
  15         unlikely(__ret_warn_once);                              \
  16 })
  17 #endif
  18
  19 #endif