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How do I find out what is using my kernel module?
You can try lsmod | grep to see all loaded kernel modules that are using a module. You can also try dmesg | grep to see if the kernel logs have any clues as to which processes may be using a module. You may be able to remove the module using rmmod –force .
What is using kernel module?
Kernel Modules Overview On modern monolithic kernels, this has been solved by using kernel modules. A kernel module (or loadable kernel mode) is an object file that contains code that can extend the kernel functionality at runtime (it is loaded as needed); When a kernel module is no longer needed, it can be unloaded.
Where to find the address of a kernel module?
The /proc/modules is used to find the address where a kernel module is loaded. The –adjust-vma option allows you to display instructions relative to 0xc89d4000. The -l option displays the number of each line in the source code interleaved with the assembly language code.
How is compiling a kernel different from compiling a user program?
Compiling a kernel module differs from compiling an user program. First, other headers should be used. Also, the module should not be linked to libraries. And, last but not least, the module must be compiled with the same options as the kernel in which we load the module.
Is the Linux kernel module programming guide free?
The Linux Kernel Module Programming Guide is a free book; you may reproduce and/or modify it under the terms of the Open Software License, version 1.1. You can obtain a copy of this license at http://opensource.org/licenses/osl.php.
Which is an example of a module in Linux?
Modules are pieces of code that can be loaded and unloaded into the kernel upon demand. They extend the functionality of the kernel without the need to reboot the system. For example, one type of module is the device driver, which allows the kernel to access hardware connected to the system.