Programmer Think

Million Chinese character annotation > > intensive reading kernel source code, Chinese annotation analysis, deep foundation engineering, permanent brain memory, and four code warehouses are updated synchronously every day< gitee | github | csdn | coding > One hundred blog Analysis > > story telling kernel, question and answer ...

Linux system transplantation: Kernel top-level Makefile (Part 2) Continue to analyze the top-level Makefile execution process of Linux kernel source code 1, make defconfig procedure Like the top-level makefile of uboot, make XXX should be used before compiling the source code_ Defconfig configures the Linux kernel, and the code configure ...

Basic principles Simulation principle MMIO Memory, memory mapped I / O memory, is a memory type defined by QEMU/KVM. Like ordinary RAM Memory, MMIO Memory in Guest also represents a memory area. It is also volatile storage.The difference between MMIO Memory and RAM Memory is that when the Guest reads and writes the memory represented by M ...

Since my work mainly focuses on the network subsystem of the kernel, I just came into contact with this module, so I want to sort out the packet receiving process driven by the network card. The following contents are my personal understanding. If there is anything wrong, I hope you can make more corrections and grow up with each other~ In the ...

Linux as a general hardware kernel, how to achieve general and efficient memory management. In the previous article on Linux memory segmentation and paging, we mainly explain that the Linux kernel carries out the abstract mapping of physical address, logical address and linear address, which is like dividing territory for families in a wilderne ...

preface Look at the source code of linux kernel. You can't get around the double linked list structure of linux kernel. This article will introduce the double linked list structure in the kernel. because The hook of LSM is inserted into the bpf system call Therefore, we need to take a brief look at the hash table structure. Kernel code r ...

Study HarmonyOS | Hongmeng to the end < domestic |Abroad > A hundred blog series This article is: v55.xx Hongmeng kernel source code analysis (relocation chapter) | external spokesman in line with international standards | 51 .c .h .o This article is a continuation of the following articles. It is suggested to read it first v54. ...

I Content installation 1.GCC sudo apt install build-essential // Verify gcc version gcc --version gcc --version gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PART ...

Working principle of the whole system: Application layer - > API - > device driver - > Hardware Sending appropriate instructions can perform different operations. This rule is specified by the device driver.These rules are displayed through the api and called by the application layerThe application layer transmits the corresponding ...

1, Preparation for Linux Kernel compilation This blog post is in Exynos4412 Linux Kernel porting process record (I)1 Continue Porting Linux Kernel on the basis of. 0. Analysis of kernel make principle The reference book is "practice of building embedded Linux core software system" 2. 1. Kernel make process It is necessary to ...