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-...>, and link3 <https://android.googlesource.com/kernel/msm/+/android-msm-dory-3.10-kitkat-w...> 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