{"id":17722,"date":"2024-11-18T13:01:49","date_gmt":"2024-11-18T05:01:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17722\/"},"modified":"2024-11-18T13:01:49","modified_gmt":"2024-11-18T05:01:49","slug":"%e8%af%a6%e8%a7%a3linux%e5%86%85%e6%a0%b8%e4%b8%ad%e7%9a%84%e4%b8%bb%e5%87%bd%e6%95%b0%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17722\/","title":{"rendered":"\u8be6\u89e3Linux\u5185\u6838\u4e2d\u7684\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406"},"content":{"rendered":"

\"\u8be6\u89e3Linux\u5185\u6838\u4e2d\u7684\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u63d2\u56fe\"<\/p>\n

\u6807\u9898\uff1aLinux\u5185\u6838\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u8be6\u89e3<\/p>\n

Linux\u5185\u6838\u4f5c\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u5305\u542b\u4e86\u5404\u79cd\u5173\u952e\u7684\u7ec4\u4ef6\u548c\u529f\u80fd\u6a21\u5757\u3002\u5176\u4e2d\uff0c\u4e3b\u51fd\u6570\u662fLinux\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\uff0c\u8d1f\u8d23\u521d\u59cb\u5316\u5404\u4e2a\u5b50\u7cfb\u7edf\uff0c\u521b\u5efa\u8fdb\u7a0b\u7b49\u5173\u952e\u64cd\u4f5c\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u89e3\u91caLinux\u5185\u6838\u4e3b\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u6982\u8ff0<\/h3>\n

Linux\u5185\u6838\u7684\u4e3b\u51fd\u6570\u4f4d\u4e8einit\/main.c\u6587\u4ef6\u4e2d\uff0c\u662f\u6574\u4e2a\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\u70b9\u3002\u5728\u4e3b\u51fd\u6570\u4e2d\uff0c\u4f1a\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u521d\u59cb\u5316\u64cd\u4f5c\uff0c\u5305\u62ec\u542f\u52a8\u5404\u4e2a\u5b50\u7cfb\u7edf\u3001\u521d\u59cb\u5316\u8bbe\u5907\u3001\u521b\u5efa\u7b2c\u4e00\u4e2a\u8fdb\u7a0b\u7b49\u3002\u4e86\u89e3\u4e3b\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\u5bf9\u4e8e\u7406\u89e3Linux\u5185\u6838\u7684\u542f\u52a8\u8fc7\u7a0b\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

\u4e8c\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u4ee3\u7801\u793a\u4f8b<\/h3>\n

\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5316\u7684Linux\u5185\u6838\u4e3b\u51fd\u6570\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u7528\u4e8e\u8bf4\u660e\u4e3b\u8981\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\uff1a<\/p>\n

void __init start_kernel(void)\n{\n    \/\/ \u6267\u884c\u57fa\u672c\u7684\u7cfb\u7edf\u521d\u59cb\u5316\n    setup_arch(&amp;command_line);\n    \n    \/\/ \u521d\u59cb\u5316\u8c03\u5ea6\u5668\n    scheduler_init();\n    \n    \/\/ \u521d\u59cb\u5316\u5185\u5b58\u7ba1\u7406\n    mm_init();\n    \n    \/\/ \u521d\u59cb\u5316\u6587\u4ef6\u7cfb\u7edf\n    fs_init();\n    \n    \/\/ \u542f\u52a8CPU\u8c03\u5ea6\n    rest_init();\n}<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cstart_kernel\u51fd\u6570\u662fLinux\u5185\u6838\u7684\u4e3b\u51fd\u6570\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u7cfb\u7edf\u521d\u59cb\u5316\u3001\u8c03\u5ea6\u5668\u521d\u59cb\u5316\u3001\u5185\u5b58\u7ba1\u7406\u521d\u59cb\u5316\u3001\u6587\u4ef6\u7cfb\u7edf\u521d\u59cb\u5316\u7b49\u91cd\u8981\u6b65\u9aa4\u3002<\/p>\n
\u4e09\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u5206\u6790<\/h3>\n
    \n
  1.  \u7cfb\u7edf\u521d\u59cb\u5316<\/strong>\uff1a\u5728\u4e3b\u51fd\u6570\u4e2d\uff0c\u9996\u5148\u4f1a\u6267\u884c\u7cfb\u7edf\u521d\u59cb\u5316\u7684\u51fd\u6570setup_arch\uff0c\u8fd9\u4e2a\u51fd\u6570\u4e3b\u8981\u7528\u4e8e\u521d\u59cb\u5316\u7cfb\u7edf\u67b6\u6784\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5982CPU\u7c7b\u578b\u3001\u5185\u5b58\u5e03\u5c40\u7b49\u3002<\/li>\n
  2.  \u8c03\u5ea6\u5668\u521d\u59cb\u5316<\/strong>\uff1a\u63a5\u7740\u4f1a\u8c03\u7528scheduler_init\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u7528\u4e8e\u521d\u59cb\u5316Linux\u5185\u6838\u7684\u8fdb\u7a0b\u8c03\u5ea6\u5668\u3002\u8c03\u5ea6\u5668\u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u54ea\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u83b7\u5f97CPU\u8d44\u6e90\u8fd0\u884c\u3002<\/li>\n
  3.  \u5185\u5b58\u7ba1\u7406\u521d\u59cb\u5316<\/strong>\uff1a\u63a5\u4e0b\u6765\u662fmm_init\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u7528\u4e8e\u521d\u59cb\u5316Linux\u5185\u6838\u7684\u5185\u5b58\u7ba1\u7406\u5b50\u7cfb\u7edf\u3002\u5185\u5b58\u7ba1\u7406\u5bf9\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\u81f3\u5173\u91cd\u8981\uff0c\u5b83\u8d1f\u8d23\u7ba1\u7406\u5185\u5b58\u7684\u5206\u914d\u3001\u91ca\u653e\u548c\u9875\u9762\u6620\u5c04\u7b49\u64cd\u4f5c\u3002<\/li>\n
  4.  \u6587\u4ef6\u7cfb\u7edf\u521d\u59cb\u5316<\/strong>\uff1a\u5728fs_init\u51fd\u6570\u4e2d\uff0cLinux\u5185\u6838\u4f1a\u521d\u59cb\u5316\u6587\u4ef6\u7cfb\u7edf\u76f8\u5173\u7684\u6570\u636e\u7ed3\u6784\u548c\u51fd\u6570\u3002\u6587\u4ef6\u7cfb\u7edf\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7528\u6765\u7ba1\u7406\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002<\/li>\n
  5.  CPU\u8c03\u5ea6<\/strong>\uff1a\u6700\u540e\u8c03\u7528rest_init\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u4f1a\u542f\u52a8CPU\u8c03\u5ea6\uff0c\u5e76\u521b\u5efa\u7b2c\u4e00\u4e2a\u7528\u6237\u8fdb\u7a0b\u3002\u4ece\u8fd9\u4e00\u6b65\u5f00\u59cb\uff0cLinux\u5185\u6838\u5c31\u6b63\u5f0f\u8fdb\u5165\u8fd0\u884c\u72b6\u6001\uff0c\u53ef\u4ee5\u5904\u7406\u7528\u6237\u7684\u7cfb\u7edf\u8c03\u7528\u548c\u4efb\u52a1\u3002<\/li>\n<\/ol>\n
    \u56db\u3001\u603b\u7ed3<\/h3>\n
    \u901a\u8fc7\u4ee5\u4e0a\u5bf9Linux\u5185\u6838\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u4e3b\u51fd\u6570\u5728Linux\u5185\u6838\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\u4ee5\u53ca\u5177\u4f53\u7684\u5b9e\u73b0\u7ec6\u8282\u3002\u4e3b\u51fd\u6570\u7684\u6b63\u786e\u6267\u884c\u5bf9\u4e8e\u6574\u4e2a\u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\u81f3\u5173\u91cd\u8981\uff0c\u7406\u89e3\u5176\u539f\u7406\u6709\u52a9\u4e8e\u6211\u4eec\u6df1\u5165\u4e86\u89e3\u64cd\u4f5c\u7cfb\u7edf\u5185\u90e8\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n
    \u5e0c\u671b\u672c\u6587\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3Linux\u5185\u6838\u4e3b\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\uff0c\u4ee5\u53ca\u5185\u6838\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u5173\u952e\u6b65\u9aa4\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u8be6\u89e3Linux\u5185\u6838\u4e2d\u7684\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6807\u9898\uff1aLinux\u5185\u6838\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u8be6\u89e3 Linux\u5185\u6838\u4f5c\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u5305\u542b\u4e86\u5404\u79cd\u5173\u952e\u7684\u7ec4\u4ef6\u548c\u529f\u80fd\u6a21\u5757\u3002\u5176\u4e2d\uff0c\u4e3b\u51fd\u6570\u662fLinux\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\uff0c\u8d1f\u8d23\u521d\u59cb\u5316\u5404\u4e2a\u5b50\u7cfb\u7edf\uff0c\u521b\u5efa\u8fdb\u7a0b\u7b49\u5173\u952e\u64cd\u4f5c\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u89e3\u91caLinux\u5185\u6838\u4e3b\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u6982\u8ff0 Linux\u5185\u6838\u7684\u4e3b\u51fd\u6570\u4f4d\u4e8einit\/main.c\u6587\u4ef6\u4e2d\uff0c\u662f\u6574\u4e2a\u5185\u6838\u542f\u52a8\u7684\u5165\u53e3\u70b9\u3002\u5728\u4e3b\u51fd\u6570\u4e2d\uff0c\u4f1a\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u521d\u59cb\u5316\u64cd\u4f5c\uff0c\u5305\u62ec\u542f\u52a8\u5404\u4e2a\u5b50\u7cfb\u7edf\u3001\u521d\u59cb\u5316\u8bbe\u5907\u3001\u521b\u5efa\u7b2c\u4e00\u4e2a\u8fdb\u7a0b\u7b49\u3002\u4e86\u89e3\u4e3b\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\u5bf9\u4e8e\u7406\u89e3Linux\u5185\u6838\u7684\u542f\u52a8\u8fc7\u7a0b\u81f3\u5173\u91cd\u8981\u3002 \u4e8c\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u4ee3\u7801\u793a\u4f8b \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5316\u7684Linux\u5185\u6838\u4e3b\u51fd\u6570\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u7528\u4e8e\u8bf4\u660e\u4e3b\u8981\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\uff1a void __init start_kernel(void) { \/\/ \u6267\u884c\u57fa\u672c\u7684\u7cfb\u7edf\u521d\u59cb\u5316 setup_arch(&amp;command_line); \/\/ \u521d\u59cb\u5316\u8c03\u5ea6\u5668 scheduler_init(); \/\/ \u521d\u59cb\u5316\u5185\u5b58\u7ba1\u7406 mm_init(); \/\/ \u521d\u59cb\u5316\u6587\u4ef6\u7cfb\u7edf fs_init(); \/\/ \u542f\u52a8CPU\u8c03\u5ea6 rest_init(); } \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cstart_kernel\u51fd\u6570\u662fLinux\u5185\u6838\u7684\u4e3b\u51fd\u6570\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u7cfb\u7edf\u521d\u59cb\u5316\u3001\u8c03\u5ea6\u5668\u521d\u59cb\u5316\u3001\u5185\u5b58\u7ba1\u7406\u521d\u59cb\u5316\u3001\u6587\u4ef6\u7cfb\u7edf\u521d\u59cb\u5316\u7b49\u91cd\u8981\u6b65\u9aa4\u3002 \u4e09\u3001Linux\u5185\u6838\u4e3b\u51fd\u6570\u5b9e\u73b0\u539f\u7406\u5206\u6790 \u7cfb\u7edf\u521d\u59cb\u5316\uff1a\u5728\u4e3b\u51fd\u6570\u4e2d\uff0c\u9996\u5148\u4f1a\u6267\u884c\u7cfb\u7edf\u521d\u59cb\u5316\u7684\u51fd\u6570setup_arch\uff0c\u8fd9\u4e2a\u51fd\u6570\u4e3b\u8981\u7528\u4e8e\u521d\u59cb\u5316\u7cfb\u7edf\u67b6\u6784\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5982CPU\u7c7b\u578b\u3001\u5185\u5b58\u5e03\u5c40\u7b49\u3002 \u8c03\u5ea6\u5668\u521d\u59cb\u5316\uff1a\u63a5\u7740\u4f1a\u8c03\u7528scheduler_init\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u7528\u4e8e\u521d\u59cb\u5316Linux\u5185\u6838\u7684\u8fdb\u7a0b\u8c03\u5ea6\u5668\u3002\u8c03\u5ea6\u5668\u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u54ea\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u83b7\u5f97CPU\u8d44\u6e90\u8fd0\u884c\u3002 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