Linux top half and bottom half interrupt mechanism

// Tasklet use the template/* to define the association between tasklet and the bottom half function */void xxx_do_tasklet (unsigned long); declare_tasklet (xxx_tasklet, xxx_do_tasklet, 0 ); /* Interrupt Processing bottom half */void xxx_do_tasklet (

Linux study Note 2

I. When an Intel driver of 945g is installed, the system fails and cannot enter X. I can't help it. I posted a post for help and went online to find information, hoping to solve the problem.1: We found that usr/bin/system-config-display is used to

Solve the Problem of changing the host name to bogon in Linux

In the morning, we found that the Linux host name changed to bogon. Bogon refers to the addresses that shouldn't appear in the Internet route table.These addresses should include:1. Private address, for example, 10,172.16-32,192. 168 .....2.

Linux Startup Process

  1. BIOSStart After the system is powered on, the computer starts fromCMOS(Complementary Metal Oxide semicondu) Chip LoadingBiosAnd detects basic information about the system hardware, such as memory, hard disk, and processor. ThenBiosSearch for

Linux Process Communication

I. Shared Memory: System Call: shmget (); When shmget () creates a new shared memory, it returns an identifier of the shmid_ds data structure that can be used to reference the shared memory. Prototype: int shmget (key_t key, int size, int shmflg

Globalmem character device driver in Linux device driver development details

# Include # include # include # include # include # include # include # include # include # include # include # define globalmem_size 0x1000 # define mem_clear 0x1 # define globalmem_major 254 static int globalmem_major = globalmem_major;

Linux device driver development explanation second character device Timed Interruption

Kernel timer Programming Essentially, the clock interrupt handler executes the update_process_timers () function, which calls the run_local_timers () function, which processes the timer_softirq Soft Interrupt and runs all the timers that expire on

Linux System Time Synchronization

View hardware time # hwclock -- show Set hardware time # hwclok -- set -- date = "month/day/year hour: minute: second" Based on the hardware time, modify the system time # hwclock -- hctosys # hwclock-S Automatic server synchronization time: #

File Sharing between virtual machines and hosts in vbox (host Linux, virtual machine XP or Linux)

Set file sharing in vbox, which can be set in the host and in the virtual machine. My environment is: Host Ubuntu, virtual machine Linux and XP First, install the enhancement function: after starting the virtual machine, select the device menu, and

Install jdk1.7 in Linux

Download jdk1.7 Http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html After the download, run the following command on the terminal: Sudo rpm-IVH jdk-7u21-linux-i586.rpm If the installation is not successful

Linux GCC compilation process

Currently, the most common C language compiler in Linux is GCC (GNU Compiler Collection ). The ansi c standard compilation system can compile programs written in C, C ++, Object C, and other languages. GCC is not only very functional Powerful and

How Linux drivers work

Http://zhidao.baidu.com/question/2603897.html Linux is a variant of the UNIX *** operating system. The principle and The idea is similar to other UNIX systems, but it has a large driver in the DoS or window environment. Difference. In the Linux

Programming of static, shared, and dynamic libraries in Linux-it should be helpful to see this running problem.

I. Classification of databasesThere are two types of statements. If you are familiar with the DLL under the win platform, it is not hard to understand: The library can be used in three forms: static, shared, and dynamic. the code of the static

Provides five new-century code tables and word root tips in Linux for ibus.

Note: how to configure the input method, please read: http://blog.csdn.net/sabalol/article/details/8512436 # Create new database from wubi-xinshiji.txt (optional) Ibus-table-createdb-D-N wubi-xinshiji.db-s wubi-xinshiji.txt # InstallSudo CP

Use Chinese characters in the Ubuntu Linux Console

Http://telltruth.net/2006/12/21/%E5%9C%A8ubuntu-linux%E7%9A%84%E6%8E%A7%E5%88%B6%E5%8F%B0%E4%B8%8B%E4%BD%BF%E7%94%A8%E4%B8%AD%E6%96%87/ Use Chinese posted on Thursday and December 21,200 6 in Unix/Linux on the Ubuntu Linux Console The company's Unix

How to mount rootfs during Linux Startup.

The root file system (named rootfs in the sample error message) is the most basic component of Linux. The root file system contains all the content required to support the complete Linux system. It contains all applications, configurations, devices,

Inter-process communication in Linux environment (2): Signal (lower)

Introduction:In signal (I), we discuss Linux signal types, sources, how to install a signal, and how to operate the signal set. This section first discusses how to understand the signal from the signal life cycle, or a seemingly simple signal

Inter-process communication in Linux (1)

Inter-process communication in Linux (1)   Introduction:In this series, the author outlines several main methods for inter-process communication in Linux. Among them, pipelines and named pipelines are one of the earliest inter-process communication

Common Linux operations (1)

The Linux operating system has been used for a long time, and many versions have been installed (red-flag Linux Turbo Linux fedro Ubuntu many versions such as RedHat), but it has not been in-depth and I have never insisted on it, so it's still a

Ubuntu shortcut keys in Linux

   From: http://www.diybl.com/course/6_system/linux/linuxjq/20090728/168196.html After a system has been used for a long time, many shortcut keys will always be used. You may be familiar with the shortcut keys in Windows compared with those in

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