Linux comes with a watchdog implementation that monitors the operation of the system, including a kernel watchdog module and a user-space watchdog program. The kernel watchdog module communicates with the user space by/dev/watchdog this character device. User space program o
Embedded System watchdog implementation, embedded system watchdog
The work of the embedded system is often affected by external electromagnetic fields, causing the program to run and run into an endless loop. the normal operation of the program is interrupted, causing the entire system to be stuck, unexpected consequences occur, so real-time monitoring of the running status of the embedded system is requir
A Frontier Waste language:
Before, there was a very popular game called "Watchdog". The game uses a very new engine technology, to create a vast world, the content is the player Aiden Pearce (protagonist) is a proficient hacker technology master, then the world is in all the goods have been placed under the control of electronic devices, the whole city is dependent on them, the protagonist decided to use their own technology for the world to pun
Watchdog, Watchdog
I. Introduction
Watchdog is mainly used to monitor the running of the system. the Linux Kernel not only provides drivers for various types of watchdog hardware circuits, but also provides a timer-based pure software watchdog driver. The driver source code
Research on STM32 independent watchdog IWDG and window watchdog WWDG
Daniellee_ustb 2014-9-25
1. Watchdog introduction
The watchdog thing is simple, but I believe most programmers don't pay enough attention to it. It is necessary to use the watchdog to ensure that the system
Itop-imx6ul Development Board watchdog test routines,the watchdog driver for the Itop-imx6ul Development Board is configured by default and can be used directly with test routines.version V1.1:1, format modification, 2, the routine modification perfect, which increases the feeding dog code.1 Watchdog Core driverThe watchdog
Linux comes with a watchdog implementation that monitors the operation of the system, including a kernel watchdog module and a user-space watchdog program.The kernel watchdog module communicates with the user space by/dev/watchdog this character device. User space program on
To prevent an application from consuming too much system resources, the Apple Engineer Gate that developed iOS designed a "watchdog" mechanism. In different scenarios, the watchdog monitors the performance of the application. If the runtime is exceeded by the scenario, the watchdog will force the end of the application process. In Crashlog, developers will see er
Linux comes with a watchdog implementation for monitoring system running, including a kernel watchdog module and a user space watchdog program. The kernel watchdog module communicates with the user space through the/dev/watchdog character device. Once a user space program op
Tags: main amp requires character write nbsp Linux system software crashesLinux comes with a watchdog implementation that monitors the operation of the system, including a kernel watchdog module and a user-space watchdog program. The kernel watchdog module communicates with the user space by/dev/
background
Application 100% Loss completely failed to start and crashed. Completely cut off the network connection normal boot, debugging mode state of waiting time is very long, but can be started, and with the UI micro-card. A strong feeling that this is thread blocking. Some time ago by the Core Data concurrency toss, see thread problem is slightly flustered. reason
First look at the crash log, as a guess, is really stuck in the main thread; unexpectedly, countless flash-back left only a cra
the watchdog (watchdog) is divided between the hardware watchdog and the software watchdog. Hardware watchdog is the use of a timer circuit, its timing output is connected to the reset end of the circuit, the program in a certain time range to the timer 0 (commonly known as
Zhou Ting (moting9@gmail.com), software engineer, IBM China System Technology Lab
Zhou ting, a software engineer, is currently engaged in the development of server management firmware at the IBM China System Technology Lab.
Brief Introduction: Linux is widely used in different fields, such as telecommunications and terminal portable devices. Applications in different fields also demand Linux systems. Carrier Grade Linux is a Carrier-level Linux Standard released by OSDL (Open Source Development
1. What is watchdog?
Watchdog, the Chinese name is "Watchdog" and its full name is watchdog timer. We can literally know that it is actually a timer. However, it is different from the Timer we normally use. A common timer generally serves as a timer, and a timer timeout (timer out) causes an interruption, for example,
To ensure stability and security, resin uses an independent watchdog process to start and monitor the Resin server. Watchdog continuously detects the status of the Resin server. If it is unresponsive or slow, the Resin server process will be restarted. In most cases, watchdog reads configuration information from resin. xml without additional configuration. Some I
Http://blog.chinaunix.net/uid-22174347-id-1786939.html
Embedded Linux in my line, mainly narrated and summed up in my study of embedded Linux in each step. One for summing up experience, two want to be able to get into embedded Linux friends to provide convenience. If there is any mistake, please correct me. Share resources, Welcome to reprint: http://hbhuanggang.cublog.cn
first, development environment Host: Vmware--fedora 9 Development Board: MINI2440--64MB Nand, kernel:2.6.30.4 compiler: ar
In Linux, for the S3C2440 Development Board, the watchdog timer has been configured by default, for example:
Devicedrivers --->
[*] Watchdog timer support --->
However, the watchdog timer is not enabled, so we will see the following message when starting the system:
S3c2410-wdts3c2410-wdt: watchdoginactive, reset disabled, IRQ disabled
The following is a detail
Introduction: The watchdog in hardware is not the gatekeeper's idea, but a very fierce dog! If you don't feed it on time, it's going to restart the system! This is the function we want ~1. Watchdog overviewThe watchdog timer (Wdt,watch dog timer) is an integral part of the microcontroller, it is actually a counter, generally give the
2410 watchdog driver Author: yd2763132 submission date: 17:10:00 |
Category: Linux | access volume: 718
# Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # UNDEF s3c24xx_va_watchdog // the previous definition has been canceled because the static ing has been canceled before dynamic ing is used again# Define s3c24xx_va_watchdog (0) # Include # Define pfx "
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