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 #include <linux/version.h>
   7
   8 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
   9
  10 #define WARN_ON_ONCE(condition) ({                              \
  11         static int __warned;                                    \
  12         int __ret_warn_once = !!(condition);                    \
  13                                                                 \
  14         if (unlikely(__ret_warn_once) && !__warned) {           \
  15                 WARN_ON(1);                                     \
  16                 __warned = 1;                                   \
  17         }                                                       \
  18         unlikely(__ret_warn_once);                              \
  19 })
  20
  21 #endif /* linux kernel < 2.6.19 */
  22
  23 #endif