On Fri, Oct 25, 2019 at 2:16 AM Irfan Ullah (울라 이르판) <ir...@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.
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