kernel catcher

About the data structures used in the kernel this series will have five articles, Introduced separately Linked list Queue Hash Mapping Red and black Treesfirst, the introduction of the core linked list The linked list defined in the kernel is a two-way list, in the previous article--libevent source code Analysis--queue.h in the understanding of tail Q_Q Ueue describes how to define a linked list queue in Fr

First in contact with the Linux BSP, the project has a specification is the bottom layer to provide hardware PCB and BOM information. Because in the Linux root file system/proc directory with hardware CPU, memory, memory and other hardware-related information, and in user space through the cat command can be easily obtained, so there is an idea, is to try to the project hardware PCB and BOM information displayed in the/proc directory, User space can then be obtained by cat or by reading and writ

(This method is limited to the CentOS faction's yum/rpm.) Supplement: limited to 64Bit. CentOS7 32-bit, I tried to use CentOS6 32-bit kernel to upgrade, can be upgraded to use the restart can be used, half an hour after the deletion of the system no longer try to use, so do not know what will bring bad experience. ） The way to upgrade the kernel of CentOS and Debian has been mentioned in the previous logs.

Linux kernel design and implementation (1)-Introduction to the kernel this section briefly introduces the basic concepts related to the kernel. Main content: single-core and micro-kernel version 1. single-core and micro-kernel www.2cto.com principle advantages and disadvanta

Linux Kernel development-Process Control and Linux kernel development process This chapter mainly analyzes the definition, status, data structure, and other concepts of processes from the perspective of code. Process Definition A process is a running program and a dynamic executable entity. A program is a collection of code and data. A code is a static entity and can be used by multiple processes, for exam

• Source code to compile the Linux kernel• Using the Linux kernel module• Actual combat-compile an NTFS kernel module to implement Linux mount NTFS file system and read and write functionsUpgrade the kernel two ways:1:rpmYumRPM-IVH cannot overwrite old kernel directly with U

The RCU of lock mechanism in Linux kernel, the big kernel lockIn the last blog post, the author analyzes the use of completion and mutual exclusion and some classic questions, the following author will focus on this blog post on the RCU mechanism of the relevant content and introduce the current has been eliminated from the kernel of the large

PHP Kernel (a) memory management, PHP kernel memory management First, the Memory Management Foundation When developing with the C language, developers have to manually perform memory management. PHP is often used as a module for Web servers, and memory management is closely associated with preventing memory leaks. In addition, PHP may be used in a threading environment, so global variables can lead to comp

View KernelUname-rViewing the default boot orderawk-f\' '$1=="Menuentry"{print $2}'/etc/grub2.cfgCentOS Linux (3.18.3-1. el7.elrepo.x86_64)7(Core) CentOS Linux, with Linux3.10.0-123. El7.x86_64centos Linux, with Linux0-rescue-893B160E363B4EC7834719A7F06E67CF Default boot order is starting from 0, but our new kernel is inserted from the beginning (the current position in 0, and 3.10 is in 1), so you need to select 0, if you want to take effect the late

Before we introduced how to use the Kernel method to generalize linear SVM so that it can deal with non-linear situations, the method used here is through a nonlinear mapping . () The original data is mapped so that the original nonlinear problem becomes a linear problem in the space after mapping. Then we use the kernel function to simplify the calculation, so that the method in practice becomes feasib

Linux Kernel deadlock, Linux Kernel A deadlock is a state where multiple processes (threads) are blocked because they wait for resources occupied by other processes for a long time. When the waiting resources are not released, the deadlock will continue. Once a deadlock occurs, the program itself cannot be solved. It can only rely on external forces to resume running of the program, such as restarting the

Mark russinovich's inside Vista kernel Series Article. Mark is one of the founders of sysinternals. He is the author of many famous system tools and a master of Windows kernel. Not long ago, he accepted Microsoft's technical fellow position and participated in Windows kernel development. This article describes many new features such as Vista

Then after the Linux kernel 2.6, can not directly export sys_call_table address, we want to get the address of the system call table, so as to achieve the interception of system calls.First put on my implementation of the good code, and then to explain it.Modu.c#include #include#include#include#include#include#includestring.h>#include#include#include#includeModule_license ("Dual BSD/GPL"); #define_debug#ifdef _DEBUG#defineKPRINTK (Fmt,args ...) printk

Transferred from: http://blog.csdn.net/fzubbsc/article/details/37736683?utm_source=tuicoolutm_medium=referralIt's been a long time since I've been in touch with the concept of synchronization, but it's always been a blur, and without deep learning, there's time to spend studying the Linux kernel Standard tutorial and the "Deep Linux device driver kernel mechanism" section of these two books. When you have j

Understanding of linux User Mode and kernel mode switching, linux User Mode Kernel 1. Differences between the concepts of user State and kernel state What is the user State and kernel state? These two basic concepts have never been fully understood before, the root cause is that most of the time we focus on programming

Advantages and disadvantages of Linux device driver dynamic kernel insertion and direct integration into the kernel analysis Introduction: The company made a Linux-based Ethernet interface board, which is currently maintained by me, the main CPU of this board uses PowerPC, run the Linux system and add two external DPRAM modules. DPRAM uses the character device driver... advantages and disadvantages of Linux

X86 platform: The Linux system compiles the configuration kernel and starts the kernel This article turns from: http://blog.chinaunix.net/uid-25811099-id-1704590.html PC System: Windows XP Virtual machine: VMware 6.5.1 build-126130 Virtual machine system: Linux system (provided on version:2.6.25-14.fc9.i686 friendly CD) compile kernel version: linux-2.6.3 2 The

Linus Torvalds has upgraded the Linux kernel to Kernel 4.0.2, new kernel patches and newer Bluetooth, USB, SCSI, ACPI drivers, increased NFS and EXT4, and improved ARM64 and PowerPC architectures.In addition to updated drivers, enhanced support for new devices and file systems also brings the long-awaited life patching feature, allowing users to update the

Kernel and operating systemBecause of the flaws in the design of some commercial operating systems and the increasing complexity of the system, the concept of "operating system" has become ambiguous for many people. Before we further discuss the topic of the Linux kernel, we first distinguish between the concepts of "kernel" and "operating system". opera

.....Today, we upgraded Ubuntu 14.04 to the latest kernel version of 4.0.5, which was not intended to be recorded, but did encounter some problems during the upgrade process, so it was still recorded and shared to the ape friends who met the same problem.Go to the official website to download the latest kernel compression package: https://www.kernel.org/Speed does not give force, can only be used in the vir