arm Linux时钟的相关内容

阿里云文档 2024-10-30

ARM64中开启kdump时内存访问性能优化介绍及使用说明

在Linux kernel中使用kdump，可以在发生内核Panic等异常时保存执行现场，捕获内存中的信息，从而协助开发者或管理员分析崩溃原因。使用kdump功能时，需要在系统启动时预留一定量内存，且这部分内存不会被常规进程使用。您可以通过在内核启动参数中增加crashkernel参数来自定义预留内存大小。本文将介绍在Alibaba Cloud Linux 3 64位 ARM架构下的kdump内存...

文章 2017-11-07 来自：开发者社区

[arm驱动]linux内核时钟

《[arm驱动]linux内核时钟》涉及内核驱动函数四个，内核结构体一个，分析了内核驱动函数一个；可参考的相关应用程序模板或内核驱动模板一个，可参考的相关应用程序模板或内核驱动一个一、内核定时器意义:内核定时器是软件意义上的定时器，最终依赖定时器来实现。时钟中断处理程序会唤起Timer_softirq软中断，运行当前处理器上到期的所有定时器。二、linux设备驱动编...

文章 2016-03-23 来自：开发者社区

ARM Linux系统的时钟机制

1. Linux下有两类时钟： 1.1 实时钟RTC 它由板上电池驱动的“Real Time Clock”也叫做RTC或者叫CMOS时钟，硬件时钟。当操作系统关机的时候，用这个来记录时间，但是对于运行的系统是不用这个时间的。 1.2 系统时钟 “System clock”也叫内核时钟或者软件时钟，是由软件根据时...

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