Can't call function provided by kernel

[Hsu I-Chieh]

Hi all,

I'm writing a kernel module in kernel 2.6.x. I called local_flush_tlb_all() 
in my module 
and there is no error or warning during compiling time. The code fragment 
is as follow:

#include <asm/tlbflush.h>

void tlb_flush()
{
   ....
   local_flush_tlb_all();
   ....
}

But when i insert this module into kernel, the message below is displayed:
   mymodule: Unknown symbol local_flush_tlb_all
   insmod: cannot insert `./mymodule.ko': Success (2): Success

Please do help!!

TIA

With regards,

Jacky Hsu

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