Thanks you.
Yes, I have tested it. " smod | grep your_module_name" command shows that
the module is loaded but the "dmesg" shows nothing.
Following is the output of the commands.
*ssd@ssd:~/Desktop/Kernel_User_comm$ lsmod | grep netlink_kernel_module*
netlink_kernel_module    16384  0

*ssd@ssd:~/Desktop/Kernel_User_comm$
dmesgssd@ssd:~/Desktop/Kernel_User_comm$ *

On Sat, Oct 26, 2019 at 1:16 AM Abu Rasheda <rcpilot2010@gmail.com> wrote:

> On Fri, Oct 25, 2019 at 2:16 AM Irfan Ullah (울라 이르판) <irfan@dke.khu.ac.kr>
> wrote:
>
>> Dear All,
>> I have developed a kernel module consists of one source file that sends
>> and receives  message to the user space.  I have spitted the source code in
>> two files, and now I  am trying to develop kernel module from these source
>> files. After compiling and linking without any problems, I insmod the
>> module but I didn’t see any of the printk() I wrote, in fact, the module
>> can be inserted and removed, but it does nothing. Code is in the attached
>> file zipped file.
>> I tried many things , e.g.,  link <https://paguilar.org/?p=7>1, link2
>> <https://www.linuxquestions.org/questions/linux-kernel-70/kernel-module-with-multiple-source-files-not-initializing-886190/>,
>> and link3
>> <https://android.googlesource.com/kernel/msm/+/android-msm-dory-3.10-kitkat-wear/Documentation/kbuild/modules.txt> etc.
>> but nothings worked out.
>> I also used *nm* to inspect the module, but, as expected, there was no
>> signs of "__init and __exit" functions can in the output.
>>
>
> I assume you have verified that your module is loaded by something like
>
> lsmod | grep your_module_name
>
> and log level allows KERN_ALERT printing.
>


-- 
*Best Regards,*


*Mr. Irfan Ullah*
PhD Candidate
Data and Knowledge Engineering(DKE) Lab
Department of Computer Science and Engineering
Kyung Hee University, South Korea.
 +82-010-591-51651 <+82%2010-3877-8867>
  sahibzada.iu@gmail.com
 sahibzada_irfanullah