linux kernel containers

Linux system startup process details-What happened after power-on-linux Kernel Analysis (0) This article references the following articles: A deep understanding of the linux Startup Process Mbr (Master Boot Record )) The process from powering on the computer to executing the main function of the Operating System Detail

Basic synchronization mechanism of the kernel:Key features of the preemption kernel: a process running in the kernel state that may be replaced by another process during kernel functions execution.Kernel preemption: Linux 2.6 Allows users to configure the kernel to be very e

/proc/kallsyms records the names and addresses of all the exported symbols in the kernel We need to compile 2 kernel modules, and then one of the kernel modules to call functions in another kernel module The HELLO.C code is as follows #include From this we can see that we have called 2 functions Add_integar and Sub

Do you want to know how to become a Linux kernel developer? Or your boss tells you, "Write a Linux driver for this device. "The purpose of this document is to describe the process you need to go through and instruct you how to work with the community to teach you all the knowledge you need to know for these purposes. This article also explains why the community w

Kernel synchronizationSynchronous introductionThe concept of synchronizationCritical section: Also known as a critical segment, is the code snippet that accesses and operates shared data.Competition conditions: 2 or more than 2 threads are executed simultaneously in the critical section, which constitutes a competitive condition.The so-called synchronization, in fact, prevent the formation of competitive conditions in the critical area.If the critical

since you are dealing with kernel modules, it is natural to understand the dependencies between the modules provided by the kernel. Basically, the kernel module is placed at/lib/modules/$ (uname-r)/kernel, which is divided into several directories:Arch: Options related to the hardware platform, such as the CPU level.Cr

Reading Notes on "laruence's Linux house dish": Linux kernel compilation and management1. kernel introduction and obtain kernel source code 1.1 What is kernel: kernel is the bottom laye

program. The purpose of this interrupt service program is to load the first sector of the floppy disk program into the specified location of memory.The main boot loader job is to find and load the secondary boot loader (kernel loader)It completes this task by parsing the partition table and locating the active partition when it finds an active partition. It will continue to scan the partitions in the remaining partition table. In order to confirm tha

other words, in the modern kernel, virtual space (logical space) and linear space are almost a concept, and the following are not distinguished.For example, even if a and B processes simultaneously access the 0x0804800 address of their linear space, the segmented paging address transformation mechanism maps the linear address of the 0x0804800 to a different physical address. And this process, the process itself is invisible, A and b all think they ha

Tag:linux kernel cat>/etc/sysctl.confNet.ipv4.ip_forward = 0 means to turn on the routing function, 0 is off, 1 is onnet.ipv4.conf.all.rp_filter=1 is "tell" kernel enhanced inbound filtering (ingress filtering) and outbound filtering (egress filtering)Net.ipv4.conf.default.rp_filter = 1 Turn on reverse path filteringnet.ipv4.conf.default.accept_source_route = 0 packages that handle passive routesKERNEL.SY

Environment construction1.1. Preparatory work(1). QEMU Virtual Machine(2). BusyBox Software(3). linux-3.5.4 kernel(4). DDD Debug tool (in Terminal input sudo apt-get install DDD installation)1.2. Compiling the kernel(1) Establishment of working directory: Mkdir-p ~/work/qemu(2) switch to this directory: CD ~/work/qemu(3) Download

Linux kernel space and user spatial information interaction methodThe author of this article :Kang Hua : Master of Computer Science, mainly engaged in the Linux operating system core, Linux technology standards, computer security, software testing and other fields of research and development work, is now working in the

*********************************************************************** * Many of the following steps are very elementary commands or explanations, because I am a novice to Linux, * In the process of compiling a lot of detours, spent a lot of time to find solutions, so * The corresponding commands are written out, I hope to be the same as the introduction of the soon and want to * The novice to compile the kernel