关于模块编程WARNING: "sys_****" [/.ko] undefined!

yimikeer

最近接触内核模块编程，在使用syscalls.h中sys_***系统调用时，make时总是
make -C /lib/modules/2.6.32.59alter/build M=/home/lsm/syslook modules
make[1]: Entering directory `/usr/src/kernels/linux-2.6.32.59'
  Building modules, stage 2.
  MODPOST 1 modules
WARNING: "sys_****" [/home/lsm/syslook/syslook.ko] undefined!
WARNING: "sys_****" [/home/lsm/syslook/syslook.ko] undefined!
WARNING: "sys_****" [/home/lsm/syslook/syslook.ko] undefined!
WARNING: "sys_****" [/home/lsm/syslook/syslook.ko] undefined!
WARNING: "sys_****" [/home/lsm/syslook/syslook.ko] undefined!
make[1]: Leaving directory `/usr/src/kernels/linux-2.6.32.59'
从而insmod失败，求大牛们帮忙解决这个啊，困扰好久了