Experimental processClone the corresponding mengning/menu.git on 1.github2. Test Menuos, test fork Direct execution results3. Configure debug system, go to gdb Debug, use file Linux-3.18.6/vmlinux and target remote:1234 to configure loading initial debugging environment4. Set breakpoints in the Linux kernel process to create the points that may be used, respectiv
Arch/x86/include/asm/*.h2. Spin LockAtomic operation can only be used in the case of only one variable in the critical section, in practical application, the situation of the critical section is much more complicated.For complex critical zones, there are several synchronization methods available in the Linux kernel, and spin locks are one of them.The spin lock feature is that when a thread acquires a lock,
should not be compiled as a module, or the system cannot be started. [] Automatic kernel module loading generally, if our kernel needs to use a driver or feature compiled as a module in some tasks, we need to use the modprobe command to load it before the kernel can be used. However, if you choose this option, when the kerne
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
Design and Implementation of Linux kernel (1)-kernel introduction,
This article briefly introduces the basic concepts related to the kernel.
Main content:
Single Kernel and micro kernel
Ker
The kernel learning notes, since it is a note to remember the key things, assorted slowly again. Here are a few simple steps to compile the kernel:
1. Go to www.kernel.org download kernel
2. mkdir/usr/src/linux-2.6.37CP 2.6.37.tar.bz2/usr/src/linux-2.6.37 (just out)
3. The
1, Linux kernel parameter setting and INITRAMFS generation2. Linux kernel compilation and installationFirst, review the start-up processpost--boot order (BIOS)--bootloader (MBR)--kernel+ramdisk--root switchover (footfs)--/sbin/init (config file) Profile: Set default RunLevel
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.
S
Article Title: How is the Linux kernel module transferred to the kernel ?. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, emb
the high-performance requirements of the program.If a process uses mmap to map a large data file to the virtual address space of a process, we need to focus on the value of Majflt because the damage to performance compared to Minflt,majflt is fatal, and the time-consuming order of random reads of a disk is several milliseconds, And Minflt only have a lot of time to affect performance.Other Memory request Management algorithm implementationmalloc used in glibc is not the only memory management m
virtual address, theoretically we can directly read and write the I/O memory resources like the read/write Ram. To ensure the cross-platform portability of the driver, we should use special functions in Linux to access the I/O memory resources, instead of the core virtual address pointer.
[MMAP]
MMAP is used to map a device, which means that an address in the user space is associated with the device memory. This allows the program to read or write d
July 26, 2014 kernel preemption and kernel control path designA definition of kernel preemption: If a process is executing kernel functions in the kernel state, a kernel switchover is allowed (that is, the process being replaced i
PS. He Bong Original works reproduced please specify the source "Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-10000290001.mykernelExperimental Guidance (how the operating system works)Use the lab building virtual machine to open the shell and enter the following code
1 CD linuxkernel/linux-3.9.4
2 Qemu-
Kernel module ProgrammingFirst, the preparatory workVirtual machines: VMware Workstation 12Operating system: UbuntuCurrent kernel version: Linux-headers-4.4.0-22-genericIi. Knowledge of kernel modulesA module is a standalone program that can be compiled separately, but not run independently. It is linked to the
problems
Q: In Linux, Wine can be used to run win32 programs. Why should I develop a Linux compatible kernel?
A: Many users use Wine on Linux to run win32 programs. After long-term development, the running efficiency of Wine has been greatly improved. However, after all, Wine is only an intermediate platform that runs
Compile the Linux kernel to solve the running problem of vmwareworkstation6.0 in the new kernel-Linux general technology-Linux programming and kernel information. For more information, see the following. 1. download the latest
Gconfig:gnome desktop environment, need to install graphics development LibraryMake KCONFIG:KDE desktop environment, need to install graphics development LibraryMake Menuconfig:First download the kernel files and extract them into the/USR/SRC directory.[[email protected] ~]# LS see if the downloaded kernel compressed package existsAnaconda-ks.cfg install.log linux1.jpg Public video document musichttpd-2.0.
First, How does the Linux kernel organize the files in each directory tree and compile them? and build a kernel with specific features as needed? in theLinuxin the kernel, there are two types of files:Makefile,Kconfig. The two files are distributed in the various levels of the
various stages of the kernel development process. The development of the kprobes is still ongoing, and the current SYSTEMTAP community is responsible for the maintenance of the debugging technology and the development of new functions, mainly by ibm,intel,redhat and other companies to maintain.
Kprobes Configuration InstructionsBefore using Kprobes for kernel debugging, you need to configure the
) Drivers/test/config. In## Test driver Configuration#Mainmenu_option next_commentComment 'test driver'
Bool 'test support 'config_testIf ["$ config_test" = "Y"]; thenTristate 'test user-space interface' config_test_userBool 'test CPU 'config_test_cpuFi
EndmenuBecause test driver is a new function for the kernel, a menu test driver is created first. Then, "test support
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