src\arch\arm\kernel\Asm-offsets.c: DEFINE(SYS_ERROR0,0x9f0000); 1.5.linux中断注册 request_irq→request_threaded_irq→__setup_irq→new->irq = irq;*old_ptr = new;(old_ptr指向action链表的最后一项) 1.6.linux中断地址映射 linux中断地
Linux内核中断机制:为了在中断执行时间尽可能短和中断处理需要完成大量工作之间找到一个平衡点,Linux将中断处理程序分解为两个半部,顶半部和底半部。 顶半部完成尽可能少的比较紧急的任务,它往往只是简单地读取寄存器中的中断状态并清除中断标志位就进行“登记工作”,将底半部处理程序挂到该设备的底半部执行队列中去...
The kernel (i.e., the core of the OS) The distro The system Intuitively, an embedded Linux system simply denotes an embedded system running on the Linux kernel. Let us focus on the remaining two pieces. The Linux kernel Linus never shipped an “embedded version” of the Linux kernel. As...
1 Introduction to Linux and Embedded Systems 2 Linux-based Embedded System Component Stack 3 Anatomy of a Linux-based System 4 Configuration and Build Process 5 Linux Kernel Modules 6 Communication Between Kernel and User Space 7 Application Demo: Building a Ranging Sensor Kernel Module 8 System ...
Embedded Linux技术基于开放源码的资源,并且已经是当今最重要的嵌入式应用技术之一。Embedded Linux是烧录在目标装置上的系统,1个Embedded Linux系统包含Linux kernel与 root filesystem 2大部分,Embedded Linux系统到底包含哪些组成要素构成,本文将由概念的层面进行解析。
Continue reading“Announcing our new Embedded Linux Networking training course” Demystifying the Kernel Boot Sequence: From ‘Starting Kernel…’ to Userspace” As kernel developers, we often find ourselves writing device drivers—pieces of code that are typically registered usingmodule_init()in the ...
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ALTHOUGH LINUX has captured the imagination of embedded-device designers worldwide, commercial operating systems continue to dominate real-time applications. With a multiuser architecture, a non-pre-emptable kernel, and a scheduler based on fairness instead of priority, Linux forced developers to ...
当Linux出现crash之后,内核会通过kexec加载/启动另一个kernel到实现预留的内存,然后将crash内核的内存转存到一个/proc/kcore文件,再通过kdump将其转存到磁盘文件,通常位于/var/crash/xxxx。后续可以通过crash工具对其进行分析来定位内核崩溃的原因。每次crash都会生成各自的/var/crash/下的文件,多次崩溃会产生多个这类...
kernel/linux ├── build │├── BUILD.gn # 编译框架GN文件 │├── kernel.mk # 内核编译文件 │└── ohos.build # 内核编译组件文件 ├── patches │├── linux-4.19 # linux-4.19 相关patch ││ ├── common_patch ││ │ └── hdf.patch # linux-4.19 HDF patches ...