求助:内核编译问题

梦垂

请大家帮忙!
内核编译时遇到问题:
In file included from /usr/include/linux/sched.h:14,
                 from book2.c:23:
/usr/include/linux/timex.h:173: field `time' has incomplete type
/usr/include/linux/timex.h:188: confused by earlier errors, bailing out
怎样改呢?
谢谢!