kernel ost

10 days to learn the Nineth day of the Linux kernel---Add code to the kernelSleep a good sleep, very late, for a long time not so comfortable, today's task is not heavy, so the pressure is not big, oh, the weather is really cold, but the laboratory has air conditioning, I still like to stay here, there is a different feeling, after writing so many days, I do not understand the page gradually enlightened, And also made some friends, really very happy a

Linux Kernel Learning notes collation.UnixUnix has a history of 40, but computer scientists still think it is the largest and best system in the existing operating system, it has become a legendary existence, the test of time is still a reputation.In 1973, after the UNIX system was rewritten in C, a large number of Unix-derived versions began to emerge, and many companies migrated UNIX to new models, and developers continued to enhance the system's fu

Transferred from: http://blog.chinaunix.net/uid-12461657-id-3487463.htmlOriginal address: A supplemental description of the interrupt stack and kernel stack in the Linux kernel MagicBoy2010interrupt stack and kernel stack topic is more of the core category, so in the "deep Linux device driver kernel mechanism" in the 5

Sometimes it is necessary to read and write file data in Linux kernel--most of the drivers that need to be debugged. There are no standard libraries available for manipulating files in kernel, and some of the functions of kernel need to be exploited: Filp_open () Filp_close (), Vfs_read () Vfs_write (), Set_fs (), GET_FS (), etc. These functions are declared in t

Author: Sandy Original works reproduced please indicate the source"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000 "Experimental environment: C+linux64 bit (32-bit system may result in different)In accordance with the academic integrity of the terms, I guarantee that the answer for my original, all the references to the external materials have been marked by provenance. Experimental environment: ubuntu14.04 operatin

Question: How are you sure the machine will run a 64-bit kernel? Answer: Running the 64-bit kernel requires 64-bit hardware. For AIX 5.2, all IBM eserver pseries 64-bit hardware can run 64-bit or 32-bit cores. The order is as follows: #/usr/sbin/bootinfo-p When running on a machine that can only run a 32-bit kernel, the string "32" is returned. If the machine

Some articles have already introduced the android kernel. This series will analyze the android kernel from the perspective of the Linux kernel, hoping to provide useful information for beginners. This chapter briefly introduces the full picture of the android kernel and plays an interesting role. Starting from the next

1. A simple probability question X-Dragon is an interesting neutral creature in the legend of hearth stone. It cannot be a target of spells or hero skills. It has 2 blood and has good viability. The mage has a spell card for the Oracle missile,

Linux Kernel Design and Implementation of Reading Notes, Linux Kernel Chapter 3 Process Management 1. fork system calls are returned twice from the kernel: one is returned to the sub-process and one is returned to the parent process. the task_struct structure is allocated by the slab distributor. 2.6 was previously placed at the bottom of the stack of the

Kernel and kernel modules: Depmod,lsmod,modinfo,insmod,rmmod,mdprobeFirst, we need to know where the kernel and kernel modules are placed. Kernel:/boot/vmlinuz or/boot/vmlinuz-version; kernel decompression required RAMDISK:/BOOT/I

Kernel design style:Redhat,suseCore: Dynamic load kernel module in directory/boot/vmlinuz-version numberKernel:/lib/modules/"kernel version number command directory"/vmlinuz-2.6.32/lib/modules/2.6.32/Single Core: LinuxCore: KO (Kernel object)Micro-kernel: windows,solaris (th

The Linux 2.4 kernel provides a better description than the kernel-Linux general technology-Linux programming and kernel information. For more information, see the following. 1. Module Subsystem, Unified Device Model, and PnP support Module Subsystem have undergone major changes. 2. Improved Stability To completely prevent the

Linux Architecture:Knowledge: Linux architecture is divided into user space and kernel spaceWhat is the reason for dividing into user space and kernel space? Protect the operating system so that the application and the kernel have different permissions. Create different levels for different codes ...Kernel space and us

Programs running in the Linux kernel should always prevent competing states caused by concurrency. This will cause the data structure to be broken down and cause the kernel to crash in severe cases. Therefore, the kernel synchronization technology is very important to the driver developed by the kernel. People who do n

Press the power supply, click it, start the computer, and then the BIOS screen will pop up. After a while, the GRUB interface will pop up, and a line after line of characters will pop up on the black screen, from time to time there are OK words. oh, don't worry. Enter your username and password ,.... The system is successfully started. So what happened in this process and what are worth learning? This article describes the relationship between the boot loader,

Winter vacation idle down, can enjoy doing their favorite things, concentrate on the lab in the dry up, because when the sophomore contact Linux, just about the kernel is really not understand, so 10 days still hope to be able to add the Linux kernel related knowledge, Then continue to stay in the lab to summarize the Linux kernel programming, 10 days will defini

Winter vacation idle down, can enjoy doing their favorite things, concentrate on the lab in the dry up, because when the sophomore contact Linux, just about the kernel is really not understand, so 10 days still hope to be able to add the Linux kernel related knowledge, Then continue to stay in the lab to summarize the Linux kernel programming, 10 days will defini

RefHttp://www.zhizhihu.com/html/y2010/2292.htmlKernel FunctionsBelow is a list of some kernel functions available from the existing literature. As is the case with previous articles, every LaTeX notation for the formulas below is readily available from their A Lternate text HTML tag. I can not guarantee all of them is perfectly correct, thus use them at your own risk. The most of them has links to articles where they has been originally used or propos

Linux Kernel compilation details, Linux kernel details After learning some online materials, I tried to find out and sort out this article. We hope you will criticize and correct the mistakes due to their limited level and improper position. Important references include: Http://raspberrypi.stackexchange.com/questions/192/how-do-i-cross-compile-the-kernel-on-a-ub

(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.