{"id":63163,"date":"2025-04-29T17:56:27","date_gmt":"2025-04-29T09:56:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/63163\/"},"modified":"2025-04-29T17:56:27","modified_gmt":"2025-04-29T09:56:27","slug":"%e5%88%86%e6%9e%90linux%e5%86%85%e6%a0%b8%e4%b8%bb%e5%87%bd%e6%95%b0%e5%9c%a8%e7%b3%bb%e7%bb%9f%e5%90%af%e5%8a%a8%e4%b8%ad%e7%9a%84%e8%a7%92%e8%89%b2-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/63163\/","title":{"rendered":"\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/171038826795842.jpg\" class=\"aligncenter\" title=\"\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272\u63d2\u56fe\" alt=\"\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272\u63d2\u56fe\" \/><\/p>\n<p>\u6807\u9898\uff1aLinux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272\u5206\u6790<\/p>\n<p>\u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u662f\u6574\u4e2a\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u6838\u5fc3\u90e8\u5206\uff0c\u5b83\u8d1f\u8d23\u521d\u59cb\u5316\u7cfb\u7edf\u7684\u5404\u9879\u529f\u80fd\uff0c\u52a0\u8f7d\u5fc5\u8981\u7684\u6a21\u5757\u548c\u9a71\u52a8\u7a0b\u5e8f\uff0c\u6700\u7ec8\u5c06\u7cfb\u7edf\u5f15\u5bfc\u5230\u7528\u6237\u6001\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u5177\u4f53\u89d2\u8272\uff0c\u5e76\u7ed9\u51fa\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u6765\u8bf4\u660e\u5176\u529f\u80fd\u3002<\/p>\n<h2>1. \u5185\u6838\u4e3b\u51fd\u6570\u7684\u4f5c\u7528<\/h2>\n<p>\u5185\u6838\u4e3b\u51fd\u6570\uff0c\u4e00\u822c\u4f4d\u4e8e\u6587\u4ef6 init\/main.c \u4e2d\u7684 start_kernel() \u51fd\u6570\uff0c\u662f\u6574\u4e2a\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\u70b9\u3002\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u7684\u4e3b\u8981\u4f5c\u7528\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u521d\u59cb\u5316\u5185\u6838\u6570\u636e\u7ed3\u6784\u548c\u7cfb\u7edf\u53d8\u91cf<\/li>\n<li>\u8bbe\u7f6e\u5904\u7406\u5668\u73af\u5883<\/li>\n<li>\u521d\u59cb\u5316\u5185\u6838\u5b50\u7cfb\u7edf<\/li>\n<li>\u88c5\u8f7d\u5fc5\u8981\u7684\u6a21\u5757\u548c\u9a71\u52a8\u7a0b\u5e8f<\/li>\n<li>\u542f\u52a8\u7cfb\u7edf\u8c03\u5ea6\u5668<\/li>\n<li>\u8f7d\u5165\u7528\u6237\u6001\u7a0b\u5e8f<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u5c06\u7cfb\u7edf\u4ece\u786c\u4ef6\u5f15\u5bfc\u5230\u8f6f\u4ef6\uff0c\u6700\u7ec8\u8ba9\u7528\u6237\u80fd\u591f\u5728\u7cfb\u7edf\u4e2d\u8fd0\u884c\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<h2>2. \u5185\u6838\u4e3b\u51fd\u6570\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e9b\u7b80\u5355\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5c55\u793a\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u4e00\u4e9b\u5173\u952e\u64cd\u4f5c\uff1a<\/p>\n<h3>\uff081\uff09\u521d\u59cb\u5316\u5185\u6838\u6570\u636e\u7ed3\u6784\u548c\u7cfb\u7edf\u53d8\u91cf<\/h3>\n<pre>void start_kernel(void)\n{\n    setup_arch();\n    setup_log();\n    MMU_init();\n    init_IRQ();\n    init_timers();\n    calibrate_delay();\n    setup_timer();\n    init_task();\n    cpus_timer_all();\n    smp_prepare_cpus();\n    boot_cpu_init();\n    time_init();\n    softirq_init();\n    build_all_zonelists();\n    page_alloc_init();\n    enable_sysrq();\n    migrate_init();\n    printk(\"Linux version %s\n\", UTS_RELEASE);\n    printk(\"System is %s on %s\n\", system_name, machine_name);\n    printk(\"CPU revision is %d\n\", cpu_data.revision);\n    printk(\"machine is %s\n\", machine_id);\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u5185\u6838\u4e3b\u51fd\u6570\u4e2d\u5bf9\u5185\u6838\u6570\u636e\u7ed3\u6784\u548c\u7cfb\u7edf\u53d8\u91cf\u8fdb\u884c\u521d\u59cb\u5316\u7684\u8fc7\u7a0b\u3002<\/p>\n<h3>\uff082\uff09\u8bbe\u7f6e\u5904\u7406\u5668\u73af\u5883<\/h3>\n<pre>void setup_arch(void)\n{\n    switch (system_type)\n    {\n        case SYSTEM_32BIT:\n            setup_32bit();\n            break;\n        case SYSTEM_64BIT:\n            setup_64bit();\n            break;\n        default:\n            panic(\"Unsupported system type\");\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u8bbe\u7f6e\u5904\u7406\u5668\u73af\u5883\u65f6\uff0c\u6839\u636e\u7cfb\u7edf\u4f4d\u6570\u8c03\u7528\u5bf9\u5e94\u7684\u521d\u59cb\u5316\u51fd\u6570\u8fdb\u884c\u5904\u7406\u5668\u7684\u8bbe\u7f6e\u3002<\/p>\n<h3>\uff083\uff09\u521d\u59cb\u5316\u5185\u6838\u5b50\u7cfb\u7edf<\/h3>\n<pre>void init_task(void)\n{\n    struct task_struct *p;\n    p = (struct task_struct *) kmalloc(sizeof(struct task_struct));\n    if (!p)\n        panic(\"Cannot allocate memory for init task\");\n    memset(p, 0, sizeof(struct task_struct));\n    p-&amp;gt;pid = 1;\n    p-&amp;gt;state = TASK_RUNNING;\n    p-&amp;gt;mm = &amp;amp;init_mm;\n    current = p;\n\n    sprintf(p-&amp;gt;comm, \"%s\", \"init\");\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u521d\u59cb\u5316\u5185\u6838\u5b50\u7cfb\u7edf\u65f6\uff0c\u521b\u5efa init \u8fdb\u7a0b\u4f5c\u4e3a\u7cfb\u7edf\u7684\u7b2c\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n<h3>\uff084\uff09\u542f\u52a8\u7cfb\u7edf\u8c03\u5ea6\u5668<\/h3>\n<pre>void cpu_idle(void)\n{\n    while (1)\n    {\n        schedule();\n        sti();\n    }\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7cfb\u7edf\u8c03\u5ea6\u5668\u8d1f\u8d23\u8fdb\u7a0b\u95f4\u7684\u5207\u6362\u548c\u8d44\u6e90\u7684\u5206\u914d\uff0ccpu_idle \u51fd\u6570\u662f\u7cfb\u7edf\u7a7a\u95f2\u65f6\u7684\u5904\u7406\u51fd\u6570\u3002<\/p>\n<h2>3. \u603b\u7ed3<\/h2>\n<p>\u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u626e\u6f14\u7740\u975e\u5e38\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5b83\u8d1f\u8d23\u6574\u4e2a\u7cfb\u7edf\u7684\u521d\u59cb\u5316\u548c\u914d\u7f6e\u5de5\u4f5c\uff0c\u4e3a\u7528\u6237\u6001\u7a0b\u5e8f\u7684\u8fd0\u884c\u63d0\u4f9b\u4e86\u57fa\u7840\u3002\u901a\u8fc7\u9010\u6b65\u5206\u6790\u5185\u6838\u4e3b\u51fd\u6570\u7684\u5404\u4e2a\u529f\u80fd\u548c\u4ee3\u7801\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u5185\u6838\u542f\u52a8\u7684\u6574\u4e2a\u8fc7\u7a0b\uff0c\u5e76\u6df1\u5165\u7814\u7a76Linux\u5185\u6838\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6807\u9898\uff1aLinux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u4e2d\u7684\u89d2\u8272\u5206\u6790 \u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u662f\u6574\u4e2a\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u6838\u5fc3\u90e8\u5206\uff0c\u5b83\u8d1f\u8d23\u521d\u59cb\u5316\u7cfb\u7edf\u7684\u5404\u9879\u529f\u80fd\uff0c\u52a0\u8f7d\u5fc5\u8981\u7684\u6a21\u5757\u548c\u9a71\u52a8\u7a0b\u5e8f\uff0c\u6700\u7ec8\u5c06\u7cfb\u7edf\u5f15\u5bfc\u5230\u7528\u6237\u6001\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u5206\u6790Linux\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u5177\u4f53\u89d2\u8272\uff0c\u5e76\u7ed9\u51fa\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u6765\u8bf4\u660e\u5176\u529f\u80fd\u3002 1. \u5185\u6838\u4e3b\u51fd\u6570\u7684\u4f5c\u7528 \u5185\u6838\u4e3b\u51fd\u6570\uff0c\u4e00\u822c\u4f4d\u4e8e\u6587\u4ef6 init\/main.c \u4e2d\u7684 start_kernel() \u51fd\u6570\uff0c\u662f\u6574\u4e2a\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\u70b9\u3002\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u7684\u4e3b\u8981\u4f5c\u7528\u5305\u62ec\uff1a \u521d\u59cb\u5316\u5185\u6838\u6570\u636e\u7ed3\u6784\u548c\u7cfb\u7edf\u53d8\u91cf \u8bbe\u7f6e\u5904\u7406\u5668\u73af\u5883 \u521d\u59cb\u5316\u5185\u6838\u5b50\u7cfb\u7edf \u88c5\u8f7d\u5fc5\u8981\u7684\u6a21\u5757\u548c\u9a71\u52a8\u7a0b\u5e8f \u542f\u52a8\u7cfb\u7edf\u8c03\u5ea6\u5668 \u8f7d\u5165\u7528\u6237\u6001\u7a0b\u5e8f \u901a\u8fc7\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u5185\u6838\u4e3b\u51fd\u6570\u5c06\u7cfb\u7edf\u4ece\u786c\u4ef6\u5f15\u5bfc\u5230\u8f6f\u4ef6\uff0c\u6700\u7ec8\u8ba9\u7528\u6237\u80fd\u591f\u5728\u7cfb\u7edf\u4e2d\u8fd0\u884c\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u3002 2. \u5185\u6838\u4e3b\u51fd\u6570\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b \u4e0b\u9762\u7ed9\u51fa\u4e00\u4e9b\u7b80\u5355\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5c55\u793a\u5185\u6838\u4e3b\u51fd\u6570\u5728\u7cfb\u7edf\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u4e00\u4e9b\u5173\u952e\u64cd\u4f5c\uff1a \uff081\uff09\u521d\u59cb\u5316\u5185\u6838\u6570\u636e\u7ed3\u6784\u548c\u7cfb\u7edf\u53d8\u91cf void start_kernel(void) { setup_arch(); setup_log(); MMU_init(); init_IRQ(); init_timers(); calibrate_delay(); setup_timer(); init_task(); cpus_timer_all(); smp_prepare_cpus(); boot_cpu_init(); time_init(); softirq_init(); build_all_zonelists(); page_alloc_init(); enable_sysrq(); migrate_init(); printk(&#8220;Linux version %s &#8220;, UTS_RELEASE); printk(&#8220;System is %s on %s &#8220;, system_name, machine_name); printk(&#8220;CPU revision [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-63163","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/63163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=63163"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/63163\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=63163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=63163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=63163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}