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<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"><meta name="author" content="weilaistar"><meta name="renderer" content="webkit"><meta name="copyright" content="weilaistar"><meta name="keywords" content="Hexo"><meta name="description" content=""><meta name="Cache-Control" content="no-cache"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><title>Weilaistar's Blog</title><link rel="stylesheet" href="/css/style.css?v=2018.7.9"><link rel="stylesheet" href="/css/animation.css?v=2018.7.9"><link rel="icon" href="/img/assets/favicon.ico"><link rel="stylesheet" href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css?version=1.5.6"><!-- scripts--><script>(function( w ){
"use strict";
// rel=preload support test
if( !w.loadCSS ){
w.loadCSS = function(){};
}
// define on the loadCSS obj
var rp = loadCSS.relpreload = {};
// rel=preload feature support test
// runs once and returns a function for compat purposes
rp.support = (function(){
var ret;
try {
ret = w.document.createElement( "link" ).relList.supports( "preload" );
} catch (e) {
ret = false;
}
return function(){
return ret;
};
})();
// if preload isn't supported, get an asynchronous load by using a non-matching media attribute
// then change that media back to its intended value on load
rp.bindMediaToggle = function( link ){
// remember existing media attr for ultimate state, or default to 'all'
var finalMedia = link.media || "all";
function enableStylesheet(){
link.media = finalMedia;
}
// bind load handlers to enable media
if( link.addEventListener ){
link.addEventListener( "load", enableStylesheet );
} else if( link.attachEvent ){
link.attachEvent( "onload", enableStylesheet );
}
// Set rel and non-applicable media type to start an async request
// note: timeout allows this to happen async to let rendering continue in IE
setTimeout(function(){
link.rel = "stylesheet";
link.media = "only x";
});
// also enable media after 3 seconds,
// which will catch very old browsers (android 2.x, old firefox) that don't support onload on link
setTimeout( enableStylesheet, 3000 );
};
// loop through link elements in DOM
rp.poly = function(){
// double check this to prevent external calls from running
if( rp.support() ){
return;
}
var links = w.document.getElementsByTagName( "link" );
for( var i = 0; i < links.length; i++ ){
var link = links[ i ];
// qualify links to those with rel=preload and as=style attrs
if( link.rel === "preload" && link.getAttribute( "as" ) === "style" && !link.getAttribute( "data-loadcss" ) ){
// prevent rerunning on link
link.setAttribute( "data-loadcss", true );
// bind listeners to toggle media back
rp.bindMediaToggle( link );
}
}
};
// if unsupported, run the polyfill
if( !rp.support() ){
// run once at least
rp.poly();
// rerun poly on an interval until onload
var run = w.setInterval( rp.poly, 500 );
if( w.addEventListener ){
w.addEventListener( "load", function(){
rp.poly();
w.clearInterval( run );
} );
} else if( w.attachEvent ){
w.attachEvent( "onload", function(){
rp.poly();
w.clearInterval( run );
} );
}
}
// commonjs
if( typeof exports !== "undefined" ){
exports.loadCSS = loadCSS;
}
else {
w.loadCSS = loadCSS;
}
}( typeof global !== "undefined" ? global : this ) );</script><script src="https://cdn.jsdelivr.net/npm/jquery@3.3.1/dist/jquery.min.js" defer></script><script src="/js/main.js?v=2018.7.9" defer></script><!-- fancybox--><link rel="preload" href="https://cdnjs.cloudflare.com/ajax/libs/fancybox/3.2.5/jquery.fancybox.min.css" as="style" onload="this.onload=null;this.rel='stylesheet'"><script src="https://cdnjs.cloudflare.com/ajax/libs/fancybox/3.2.5/jquery.fancybox.min.js" defer></script><!-- busuanzi--><script async src="//dn-lbstatics.qbox.me/busuanzi/2.3/busuanzi.pure.mini.js"></script><meta name="generator" content="Hexo 8.1.1"></head><body><section class="profile-close" id="cxo-profile"><div class="profile-avatar"><i class="fa fa-caret-left"></i><img src="/img/OIP.png"></div><!--.profile-saying
i.fa.fa-comment
.saying--><div class="cxo-profile-inner"><div class="profile-name">weilaistar</div><div class="profile-signature">for me</div><div class="read-progress"></div></div></section><header id="cxo-intro" style="height: 70vh;background-image: url(/img/intro/index-bg.png);"><nav id="cxo-intro-nav"><section><div class="intro-nav-title"><a href="/">Weilaistar's Blog</a></div><div class="intro-nav-label-box"><a href="/">Home</a><a href="/about/">About</a><a href="/archives/">Archives</a><a href="/tags/">Tags</a></div><i class="fa fa-bars intro-nav-menu"><div class="intro-nav-drop"><a href="/">Home</a><a href="/about/">About</a><a href="/archives/">Archives</a><a href="/tags/">Tags</a></div></i><div class="clear"></div></section></nav><h1>Weilaistar's Blog</h1><h5>Welcome to my Blog!</h5><div class="intro-social"><a class="fa fa-envelope" href="mailto:guoqing_tang@mail.ustc.edu.cn" title="email"></a><a class="fa fa-github" href="https://github.com/weilaistar" target="_blank" title="github"></a><a class="fa fa-weibo" href="//www.weibo.com" target="_blank" title="weibo"></a><a class="fa fa-facebook" href="//www.facebook.com" target="_blank" title="facebook"></a><a class="fa fa-twitter" href="//twitter.com" target="_blank" title="twitter"></a><a class="fa fa-rss" href="/atom.xml" target="_blank" title="rss"></a></div></header><article class="cxo-up" id="cxo-content-outer"><section id="cxo-content-inner"><section id="recent-posts"><div class="recent-post-item"><div class="post-title"><a href="/2025/12/03/Linux%E5%B9%B3%E5%8F%B0%E8%AE%BE%E5%A4%87%E9%A9%B1%E5%8A%A8%E6%A1%86%E6%9E%B6%E6%B5%85%E6%9E%90/">Linux平台设备驱动框架浅析</a></div><div class="post-time"><i class="fa fa-table"></i><time datetime="2025-12-03T01:55:00.000Z">2025-12-03</time></div><div class="recent-post-content">
最近在学习一些Linux系统下的驱动框架，从传统的字符设备驱动（局限于某个平台的某个设备的某个驱动），到实现设备和驱动分层和分离的框架（这部分是想将驱动变成一个相对普适的框架，并配套一个适合自己单板的具体驱动，反正就是想要把具体的驱动更具体，能够普适的做成框架，体现面向对象的思想），再到后面的支持不同硬件平台的设备驱动框架，最后应该就是设备树实现硬件拓扑了。
Linux平台驱动框架（Platform Driver Framework）是Linux内核中用于管理和支持各种平台设备（如嵌入式设备、SoC等）的一种机制。本文将对Linux平台驱动框架进行浅析，介绍其基本概念、工作原理以及如何编写 ...</div><div class="recent-post-tags"><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="Linux"> Linux</a><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="驱动框架"> 驱动框架</a><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="设备驱动"> 设备驱动</a></div><div class="read-more"><a class="more" href="/2025/12/03/Linux%E5%B9%B3%E5%8F%B0%E8%AE%BE%E5%A4%87%E9%A9%B1%E5%8A%A8%E6%A1%86%E6%9E%B6%E6%B5%85%E6%9E%90/#more">ReadMore</a></div><hr></div><div class="recent-post-item"><div class="post-title"><a href="/2025/12/01/Linux%E4%B8%AD%E5%86%85%E5%AD%98%E6%98%A0%E5%B0%84%E4%B8%8E%E8%A7%A3%E6%98%A0%E5%B0%84%E5%87%BD%E6%95%B0/">Linux中内存映射与解映射函数</a></div><div class="post-time"><i class="fa fa-table"></i><time datetime="2025-12-01T11:17:33.000Z">2025-12-01</time></div><div class="recent-post-content">
在Linux中，内存映射（mapping）和解映射（unmapping）是管理虚拟内存与物理内存之间关系的关键机制。本文将介绍Linux中常用的内存映射与解映射函数及其工作原理。
用户空间的映射与解映射mmap()mmap() （memory map）是一个系统调用，用于在调用进程的虚拟地址空间中创建一个新的映射。其作用如下：
提高I/O效率：将一个文件或设备映射到内存，使得程序可以像访问内存一样访问文件内容，无需显示调用read或write函数（无需缓冲区来回拷贝）。
共享内存：允许多个进程共享同一块内存区域，便于进程间通信。
匿名映射：可以创建没有关联文件的内存映射区域 ...</div><div class="recent-post-tags"><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="Linux"> Linux</a><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="内存管理"> 内存管理</a><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="内存映射"> 内存映射</a></div><div class="read-more"><a class="more" href="/2025/12/01/Linux%E4%B8%AD%E5%86%85%E5%AD%98%E6%98%A0%E5%B0%84%E4%B8%8E%E8%A7%A3%E6%98%A0%E5%B0%84%E5%87%BD%E6%95%B0/#more">ReadMore</a></div><hr></div><div class="recent-post-item"><div class="post-title"><a href="/2025/11/10/How-to-create-personal-blog/">How to create personal blog?</a></div><div class="post-time"><i class="fa fa-table"></i><time datetime="2025-11-10T11:32:33.000Z">2025-11-10</time></div><div class="recent-post-content">
如何用 GitHub 和 Hexo 搭建个人博客？
这是我的第一篇博客，希望能帮助所有像我一样，渴望拥有一个个人博客的朋友。
我们将使用强大的静态博客生成器 Hexo 和免费的代码托管平台 GitHub Pages，在极短的时间内搭建起一个优雅的个人博客。
本地环境准备在本地电脑上，我们需要安装以下基础环境：
软件
作用
检查命令
Node.js
Hexo 运行环境（推荐 LTS 版本）
node -v
Git
版本控制和部署工具
git --version
安装完成后，全局安装 Hexo 命令行工具：
1npm install -g hexo-cli
Hexo ...</div><div class="recent-post-tags"><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="github"> github</a><a class="post-tag fa fa-tag" href="javascript:void(0)" date-tags="Blog"> Blog</a></div><div class="read-more"><a class="more" href="/2025/11/10/How-to-create-personal-blog/#more">ReadMore</a></div><hr></div></section><nav class="cxo-page-nav"><span class="page-number current">1</span></nav></section></article><footer id="cxo-footer-outer"><div id="cxo-footer-inner"><p class="footer-container"><span>Site by </span><a target="_blank" rel="noopener" href="http://hexo.io"><span>Hexo</span></a><span> | theme </span><a target="_blank" rel="noopener" href="https://github.com/Longlongyu/hexo-theme-Cxo"><span>Cxo</span></a></p><i class="fa fa-user"> </i><span id="busuanzi_value_site_uv"></span><span> | </span><i class="fa fa-eye"> </i><span id="busuanzi_value_site_pv"></span></div></footer><!-- catelog--><!-- top--><i class="fa fa-arrow-up close" id="go-up" aria-hidden="true"></i></body></html>