Kernel modules offers an easy way to extend the functionality of the base kernel without having to rebuild or recompile the kernel again. Most of the drivers are implemented as a Linux kernel modules. When those
The kernel modules will have a .ko extension. On a normal linux system, the kernel modules will reside inside /lib/modules/<kernel_version>/kernel/ directory. Earlier we discussed how tocompile a kernel from the source. This tutorial explains how to write a Kernel module using a simple Hell...
So the first step in creating a linux kernel module is to already have the linux source code downloaded. This can be done by either downloading directly to your computer or using a method such as git to download the linux source code. Know that a linux kern...
How the Linux Kernel Boots(第5章 Linux内核的启动过程) You now know the physical and logical structure of a Linux system, what the kernel is, and how to work with processes. This chapter will teach you how the kernel starts— or boots. In other words, you’ll learn how the kernel ...
Most Linux distributions run a new version of syslogd called rsyslogd that does much more than simply write log messages to files. For example, you can use it to load a module to send log messages to a database. But when starting out with system logs, it’s easiest to start with the ...
Chapter 5. How the Linux Kernel Boots(第5章 Linux内核的启动过程) You now know the physical and logical structure of a Linux system, what the kernel is, and how to work with processes. This chapter will teach you how the kernel starts— or boots. In other words, you’ll learn how the...
In this article (Part 1) I will present how to create a simple Linux kernel module that implements a netfilter hook for a generic transport protocol (not one of the usual ones). In Part 2, I plan to connect the module to the iptables rules generated on the userspace side. ...
Verify Auto-Build of a Kernel Module during Kernel Upgrade With DKMS configured forixgbedriver, let's see what happens to the installed driver when we upgrade to a new kernel. In this test, I am going to upgrade the kernel from 3.10.0-229 to 3.10.0-327. The test environment used is ...
If the kernel module is part of the initramfs (uselsinitrd /boot/initramfs-$(uname -r).img|grep module-name.koto verify), then you should rebuild your initial ramdisk image, omitting the module to be avoided (seeHow to rebuild the initial ramdisk image in Red Hat Enterprise Linuxfor more...
How to inject PCIE AER errors on the software level into a running Linux kernel? Resolution ras-utils rpm provides tools to inject errors. (ras-utils is included in RHEL6 Optional channel.) Raw # rpm -ql ras-utils /sbin/aer-inject ...