{"id":33269,"date":"2024-01-16T13:40:25","date_gmt":"2024-01-16T05:40:25","guid":{"rendered":"https:\/\/www.deepin.org\/?p=33269"},"modified":"2024-01-16T13:41:15","modified_gmt":"2024-01-16T05:41:15","slug":"evolution-of-ebpf-2","status":"publish","type":"post","link":"https:\/\/www.deepin.org.cn\/zh\/evolution-of-ebpf-2\/","title":{"rendered":"eBPF \u7684\u53d1\u5c55\u6f14\u8fdb --- \u4ece\u77f3\u5668\u65f6\u4ee3\u5230\u6210\u4e3a\u795e\uff08\u4e8c\uff09"},"content":{"rendered":"&nbsp;<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/storage.deepin.org\/thread\/202401160540078193_2.jpeg\" alt=\"\" width=\"900\" height=\"383\" \/><\/p>\n<p id=\"1-\u524d\u8a00\"><strong>\u524d\u8a00\uff1a<\/strong>\u6280\u672f\u7684\u53d1\u5c55\u5f80\u5f80\u662f\u79ef\u8dec\u6b65\u800c\u81f3\u5343\u91cc\u7684\u3002Linux\u4ece92\u5e74\u8bde\u751f\uff0c\u53d1\u5c55\u81f3\u4eca\u5df2\u7ecf\u8986\u76d6\u5927\u5c0f\u5404\u7c7b\u7684\u4fe1\u606f\u57fa\u7840\u8bbe\u65bd\u3002\u662f\u4ec0\u4e48\u6837\u7684\u529b\u91cf\uff0c\u8ba9Linux\u80fd\u591f\u59cb\u7ec8\u4fdd\u6301\u53d1\u5c55\u6d3b\u529b\uff0c\u53c8\u5982\u4f55\u770b\u5f85Linux\u4e4b\u4e0a\u51fa\u73b0\u7684\u65b0\u7684\u6280\u672f\u8d8b\u52bf\uff1f<\/p>\n<p>\u672c\u6587\u8bd5\u56fe\u901a\u8fc7\u68b3\u7406eBPF\u7684\u6f14\u8fdb\u8fc7\u7a0b\uff0c\u63a2\u7d22Linux\u5185\u6838\u7684\u53d1\u5c55\u52a8\u529b\u6765\u6e90\u4e0e\u53d1\u5c55\u8f68\u8ff9\uff0c\u4e0e\u5927\u5bb6\u4e00\u540c\u7545\u60f3eBPF\u7ed9\u5185\u6838\u6280\u672f\u3001Linux\u751f\u6001\u5e26\u6765\u7684\u5168\u65b0\u53d8\u5c40\u3002<\/p>\n<p><strong>\u524d\u671f\u56de\u987e\uff1a<\/strong><\/p>\n<p><strong><a href=\"https:\/\/www.deepin.org\/zh\/evolution-of-ebpf-1\/\">eBPF \u7684\u53d1\u5c55\u6f14\u8fdb --- \u4ece\u77f3\u5668\u65f6\u4ee3\u5230\u6210\u4e3a\u795e\uff08\u4e00\uff09<\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n<h1><strong>3. \u53d1\u5c55\u6eaf\u6e90<\/strong><\/h1>\n<div>\n<div>\u56de\u987e\u6280\u672f\u7684\u53d1\u5c55\u8fc7\u7a0b\uff0c\u5c31\u50cf\u89c2\u770b\u975e\u6d32\u5927\u8349\u539f\u65e5\u51fa\u65e5\u843d\u4e00\u6837\uff0c\u5b8f\u5927\u7684\u8fc7\u7a0b\u8ba9\u4eba\u611f\u52a8\uff0c\u7ec6\u8282\u90e8\u5206\u5f15\u4eba\u6df1\u601d\u3002\u6bcf\u5929\u5faa\u73af\u4e0d\u8f8d\uff0c\u5374\u53c8\u6bcf\u5929\u4e0d\u540c\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>BPF \u7684\u5e94\u7528\u65e9\u5df2\u8d85\u8d8a\u4e86\u5b83\u6700\u521d\u7684\u8bbe\u8ba1\uff0c\u4f46\u5982\u679c\u8981\u8ffd\u6eaf BPF \u6700\u521d\u7684\u6765\u6e90\uff0c\u5219\u5fc5\u987b\u56de\u5f52\u5230\u5b83\u6700\u521d\u7684\u5e94\u7528\u9886\u57df\uff0c\u518d\u8fdb\u884c\u7406\u89e3\u5206\u6790\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>BPF \u6700\u521d\u7684\u7528\u9014\u5728\u4e8e\u89c2\u6d4b\uff0c\u6700\u521d\u7528\u4e8e\u7f51\u7edc\u62a5\u6587\u7684\u6293\u53d6\u548c\u5206\u6790\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u56e0\u6b64 BPF \u7684\u6700\u521d\u3001\u6700\u6839\u672c\u7684\u6765\u6e90\uff0c\u662f\u4f5c\u4e3a\u4e00\u79cd\u89c2\u6d4b\u624b\u6bb5\u51fa\u73b0\u7684\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u800c\u5728\u8fd9\u4e2a\u9886\u57df\u4e2d\uff0c\u6280\u672f\u7684\u6f14\u8fdb\u8fed\u4ee3\uff0c\u662f\u4e00\u4e2a\u5f88\u957f\u7684\u8fc7\u7a0b\uff0c\u4f53\u73b0\u4e86\u5185\u6838\u6280\u672f\u53d1\u5c55\u7684\u8270\u8f9b\u3001\u4e5f\u540c\u65f6\u5145\u6ee1\u4e86\u8da3\u5473\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u5982\u679c\u628a\u5185\u6838\u770b\u4f5c\u4e00\u4e2a\u4e16\u754c\uff0c\u5728\u8fd9\u4e2a\u5e7f\u88a4\u7684\u571f\u5730\u4e0a\uff0c\u89c2\u6d4b\u6280\u672f\u7684\u53d1\u5c55\uff0c\u4e5f\u540c\u6837\u7ecf\u5386\u4e86\u4ece\u8499\u6627\u5230\u73b0\u4ee3\u7684\u53d1\u5c55\u8fc7\u7a0b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u6bcf\u4e2a\u65f6\u4ee3\u90fd\u6709\u5176\u72ec\u5177\u7279\u8272\u7684\u89c2\u6d4b\u6280\u672f\uff0c\u5b83\u51b3\u5b9a\u4e86\u5f53\u65f6\u7684\u5f00\u53d1\u4eba\u5458\u9700\u8981\u5177\u5907\u4ec0\u4e48\u6837\u7684\u529f\u5e95\uff0c\u4ec0\u4e48\u6837\u7684\u5f00\u53d1\u65b9\u5f0f\uff0c\u8fd9\u6784\u6210\u4e86\u4e00\u4e2a\u65f6\u4ee3\u7279\u8272\uff0c\u4e5f\u8c31\u5199\u4e86\u65f6\u4ee3\u7684\u6545\u4e8b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u800c\u6bcf\u6b21\u65f6\u4ee3\u7684\u66f4\u8fed\uff0c\u603b\u662f\u5728\u67d0\u4e9b\u65b9\u9762\u98a0\u8986\u4e86\u6216\u8005\u7a81\u7834\u4e86\u4f20\u7edf\u7684\u601d\u7ef4\uff0c\u4ece\u800c\u5f15\u53d1\u4e86\u89c2\u6d4b\u65b9\u5f0f\u7684\u5de8\u5927\u8fdb\u6b65\uff0c\u4fc3\u8fdb\u4e86\u6548\u7387\u548c\u53ef\u89c2\u6d4b\u6027\u7684\u63d0\u5347\u3002\u5bf9\u73b0\u6709\u6280\u672f\u7684\u6df1\u5165\u7814\u7a76\u4e0e\u98a0\u8986\u6027\u7684\u601d\u60f3\u6240\u6784\u6210\u7684\u521b\u65b0\uff0c\u662f\u6280\u672f\u9886\u57df\u6f14\u8fdb\u7684\u57fa\u672c\u5f62\u5f0f\u3002\u800c\u5176\u521b\u65b0\u7684\u52a8\u529b\u53c8\u662f\u4ec0\u4e48\u5462\uff1f\u6211\u4eec\u5728\u540e\u6587\u9010\u6b65\u63ed\u793a\u3002<\/div>\n<div><\/div>\n<div><\/div>\n<\/div>\n<h2>3.1.\u00a0<strong>\u77f3\u5668\u65f6\u4ee3<\/strong><\/h2>\n<div>\n<p>\u66fe\u51e0\u4f55\u65f6\uff0c\u5185\u6838\u7684\u5f00\u53d1\u8fd8\u5728\u521d\u59cb\u9636\u6bb5\uff0c\u7531\u4e8e\u5185\u6838\u7684\u539f\u7406\u590d\u6742\u3001\u6240\u5904\u7684\u4f4d\u7f6e\u7279\u6b8a\uff0c\u5f00\u53d1\u65b9\u5f0f\u548c\u7528\u6237\u6001\u6709\u5f88\u5927\u4e0d\u540c\u3002\u5185\u6838\u5f00\u53d1\u96be\u5ea6\u8fdc\u8fdc\u5927\u4e8e\u7528\u6237\u6001\u7684\u5e94\u7528\u5f00\u53d1\uff0c\u5c24\u5176\u8c03\u8bd5\u6bd4\u8f83\u56f0\u96be\u3002\u72b9\u8bb0\u5f97\u90a3\u65f6\u5bf9\u4e8e\u5185\u6838\u662f\u5426\u5f15\u5165 GDB \u8c03\u8bd5\u673a\u5236\uff0c\u6709\u8fc7\u4e00\u4e9b\u4e89\u8bba\u3002\u5176\u5206\u6b67\u70b9\u5c31\u5728\u4e8e\uff0c\u5f15\u5165\u8fc7\u4e8e\u590d\u6742\u7684\u673a\u5236\u4f1a\u6539\u53d8\u5185\u6838\u7684\u884c\u4e3a\u7279\u6027\uff0c\u5f71\u54cd\u95ee\u9898\u7684\u7a33\u5b9a\u6027\uff0c\u53cd\u800c\u4e0d\u5229\u4e8e\u95ee\u9898\u7684\u5206\u6790\u5b9a\u4f4d\u3002<\/p>\n<\/div>\n<div>\n<div>\u90a3\u65f6\u6700\u503c\u5f97\u4fe1\u8d56\u7684\u5de5\u5177\u5c31\u662f printk \u4e86\u3002\u8fd9\u662f\u4e00\u79cd\u4f4e\u4ecb\u5165\u7684\u89c2\u6d4b\u5de5\u5177\uff0c\u4f7f\u7528\u7b80\u5355\uff0c\u51e0\u4e4e\u53ef\u4ee5\u7528\u4e8e\u4efb\u4f55\u5730\u65b9\uff0c\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u89c2\u6d4b\u5185\u6838\u7684\u8fd0\u884c\u72b6\u6001\u3002\u4f46\u663e\u8457\u7684\u7f3a\u70b9\u662f\u4e0d\u591f\u7075\u6d3b\uff0c\u5982\u679c\u95ee\u9898\u6d89\u53ca\u7684\u903b\u8f91\u8def\u5f84\u6bd4\u8f83\u957f\u3001\u5206\u652f\u6bd4\u8f83\u590d\u6742\u7684\u8bdd\uff0c\u9700\u8981\u53cd\u590d\u591a\u6b21\u624d\u80fd\u5b9a\u4f4d\u95ee\u9898\u7684\u6839\u6e90\u3002\u56e0\u6b64\uff0c\u90a3\u65f6\u5019\u5bf9\u5185\u6838\u5f00\u53d1\u4eba\u5458\u7684\u4e00\u4e2a\u5fc5\u4e0d\u53ef\u5c11\u7684\u8981\u6c42\uff0c\u5c31\u662f\u5bf9\u6240\u8d1f\u8d23\u5b50\u7cfb\u7edf\u7684\u5b9e\u73b0\u539f\u7406\u548c\u4ee3\u7801\u903b\u8f91\u7684\u719f\u6089\u7a0b\u5ea6\u9700\u8981\u975e\u5e38\u9ad8\uff0c\u80fd\u591f\u6839\u636e\u6bd4\u8f83\u5c11\u7684\u89c2\u6d4b\u4fe1\u606f\uff0c\u51c6\u786e\u5b9a\u4f4d\u95ee\u9898\u7684\u6839\u6e90\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u4e8b\u7269\u603b\u662f\u5b58\u5728\u4e24\u9762\u6027\uff0c\u5c31\u50cf\u5f53\u521d\u4ea7\u751f\u7684\u90a3\u573a\u4e89\u8bba\u4e00\u6837\uff0cprintk \u9664\u4e86\u57fa\u672c\u7684\u4fe1\u606f\u8f93\u51fa\u673a\u5236\u5916\uff0c\u51e0\u4e4e\u6ca1\u6709\u63d0\u4f9b\u4efb\u4f55\u5f3a\u6709\u529b\u7684\u7279\u6027\uff0c\u8fd9\u56fa\u7136\u4f53\u73b0\u4e86\u5f53\u65f6\u7684\u6280\u672f\u6c34\u5e73\u8fd8\u5728\u6bd4\u8f83\u539f\u59cb\u7684\u9636\u6bb5\uff08\u6ca1\u9519\uff0c\u5c31\u50cf\u662f\u77f3\u5668\u65f6\u4ee3\uff09\uff0c\u4f46\u540c\u65f6\u4e5f\u5012\u903c\u5f53\u65f6\u7684\u5185\u6838\u5f00\u53d1\u4eba\u5458\u8d85\u5f3a\u7684\u4ee3\u7801\u7406\u89e3\u548c\u5206\u6790\u80fd\u529b\u3002\u4ee5\u4fbf\u5f25\u8865\u7b80\u964b\u7684\u5de5\u5177\u5bf9\u6548\u7387\u7684\u63a3\u8098\uff0c\u66f4\u5feb\u5730\u89e3\u51b3\u7a0b\u5e8f\u4e2d\u7684 BUG\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u53e6\u4e00\u65b9\u9762\uff0c\u5ba2\u89c2\u5730\u8bb2\uff0cprintk \u56fa\u7136\u7b80\u5355\uff0c\u5353\u5c14\u65e0\u5f80\u4e0d\u5229\u3002\u5b83\u53ef\u4ee5\u4f7f\u7528\u5728\u4efb\u4f55\u5730\u65b9\uff0c\u5177\u6709\u5b8c\u5168\u7684\u4e0a\u4e0b\u6587\u8bbf\u95ee\u80fd\u529b\uff0c\u4e0d\u53d7\u7ea6\u675f\u7684\u8868\u8fbe\u80fd\u529b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u5b83\u7684\u89c2\u6d4b\u80fd\u529b\u548c\u7a0b\u5e8f\u672c\u8eab\u5b8c\u5168\u76f8\u7b49\uff0c\u7a0b\u5e8f\u672c\u8eab\u80fd\u770b\u5230\u4ec0\u4e48\u5b83\u5c31\u80fd\u770b\u5230\u4ec0\u4e48\uff0c\u53ef\u4ee5\u8bf4\u662f\u5f3a\u5927\u5230\u5dc5\u5cf0\u3002\u8fd9\u79cd\u5f3a\u5927\u4e5f\u662f\u5176\u65e0\u6cd5\u88ab\u53d6\u4ee3\u7684\u6839\u672c\u539f\u56e0\uff0c\u5c3d\u7ba1\u5185\u6838\u7684\u8c03\u6d4b\u6280\u672f\u4e0d\u65ad\u5728\u53d1\u5c55\uff0c\u8fd9\u4e00\u70b9\u59cb\u7ec8\u672a\u88ab\u8d85\u8d8a\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u5b83\u53ef\u4ee5\u7528\u4efb\u4f55\u7ebf\u6027\u7684\u6587\u672c\u5f62\u5f0f\uff0c\u8f93\u51fa\u5f00\u53d1\u4eba\u5458\u5173\u6ce8\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002\u5728\u540e\u6765\uff0c\u8fd9\u79cd\u8868\u8fbe\u80fd\u529b\u5f97\u5230\u4e86\u8fdb\u4e00\u6b65\u53d1\u5c55\uff0c\u652f\u6301\u4e86\u90e8\u5206\u6b63\u5219\u6587\u6cd5\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u5b83\u7684\u7f3a\u70b9\u5728\u4e8e\u7f3a\u4e4f\u4ea4\u4e92\u6027\uff0c\u4efb\u4f55\u4e00\u70b9\u6539\u53d8\u90fd\u9700\u8981\u4fee\u6539\u7a0b\u5e8f\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u4e0d\u7ba1\u4e0a\u5c42\u6d41\u7a0b\u662f\u5426\u88ab\u5173\u6ce8\uff0c\u5b83\u7684\u4fe1\u606f\u90fd\u4f1a\u88ab\u8f93\u51fa\uff0c\u5927\u5927\u5f71\u54cd\u4e86\u6027\u80fd\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>printk \u53ef\u4ee5\u8bf4\u662f\u6700\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u81f3\u4eca\u6211\u4e5f\u662f\u8fd9\u6837\u8ba4\u4e3a\u3002\u4f46\u5b83\u540c\u65f6\u4e5f\u662f\u6700\u7c97\u7cd9\u7684\u5de5\u5177\u3002\u5c31\u50cf\u77f3\u5934\u4e00\u6837\uff0cprink \u968f\u5904\u53ef\u89c1\uff0c\u968f\u5904\u53ef\u7528\uff0c\u7528\u4e86\u5c31\u4e00\u5b9a\u6709\u6240\u5f97\u3002\u7b80\u5355\u3001\u5f3a\u5927\u3001\u76f4\u63a5\u3002\u4f46\u662f\u540c\u6837\u50cf\u77f3\u5934\u4e00\u6837\uff0c\u5982\u679c\u7528\u5f97\u591a\u4e86\uff0c\u5c31\u4f1a\u6210\u4e3a\u5783\u573e\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>printk \u76f8\u6bd4\u4e8e BPF\uff0c\u62e5\u6709\u5b8c\u5168\u4e0d\u53d7\u9650\u5236\u7684\u4e0a\u4e0b\u6587\u8bbf\u95ee\u80fd\u529b\uff0c\u4f7f\u7528\u7684\u5730\u65b9\u51e0\u4e4e\u6ca1\u6709\u9650\u5236\uff0c\u4ec5\u4ece\u89c2\u6d4b\u7684\u89d2\u5ea6\uff0c\u5f3a\u5927\u4e4b\u5904\u6709\u8fc7\u4e4b\u800c\u65e0\u4e0d\u53ca\u3002\u4f46\u662f\u4f7f\u7528\u65b9\u5f0f\u8fc7\u4e8e\u539f\u59cb\uff0c\u7f3a\u4e4f\u5de5\u4e1a\u5316\u7684\u6269\u5c55\u80fd\u529b\uff0c\u56e0\u6b64\u5982\u679c\u5728\u66f4\u957f\u7684\u65f6\u95f4\u5c3a\u5ea6\u3001\u66f4\u5e7f\u7684\u5e94\u7528\u9886\u57df\u6765\u770b\u7684\u8bdd\uff0cprintk \u65e0\u6cd5\u548c BPF \u76f8\u63d0\u5e76\u8bba\u3002<\/div>\n<div><\/div>\n<\/div>\n<div><\/div>\n<h2>3.2.\u00a0<strong>\u94c1\u5668\u65f6\u4ee3<\/strong><\/h2>\n<div><\/div>\n<div>\n<div>\u5728\u77f3\u5668\u65f6\u4ee3\uff0c\u4eba\u4eec\u4f7f\u7528\u77f3\u5934\u78e8\u5236\u7684\u5de5\u5177\u8fdb\u884c\u751f\u4ea7\uff0c\u8fd9\u4e9b\u5de5\u5177\u7c97\u7cd9\u3001\u975e\u6807\u51c6\u5316\u3001\u6750\u8d28\u539f\u59cb\u5bb9\u6613\u635f\u574f\uff0c\u7b28\u91cd\u3001\u4f7f\u7528\u5bff\u547d\u77ed\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>Printk \u4e5f\u662f\u4e00\u6837\uff0c\u6bcf\u6b21\u6267\u884c\u65f6\u90fd\u4f1a\u8f93\u51fa\u4fe1\u606f\uff0c\u4f46\u5927\u591a\u6570\u65f6\u5019\u662f\u4e0d\u9700\u8981\u7684\uff1b\u5bff\u547d\u77ed\uff0c\u6bcf\u6b21\u6539\u53d8\u9700\u8981\u4fee\u6539\u4ee3\u7801\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u968f\u7740\u5185\u6838\u8d8a\u6765\u8d8a\u6210\u719f\uff0c\u67b6\u6784\u8bbe\u8ba1\u3001\u6a21\u5757\u5212\u5206\u3001\u5185\u90e8\u529f\u80fd\u7b49\u7b49\u90fd\u8d8a\u6765\u8d8a\u89c4\u8303\u5408\u7406\u3002\u5185\u6838\u7684\u7279\u6027\uff0c\u7531\u5404\u4e2a\u5b50\u7cfb\u7edf\u5206\u522b\u8d1f\u8d23\uff0c\u5185\u6838\u7684\u6574\u4f53\u8868\u73b0\u662f\u5404\u4e2a\u5b50\u7cfb\u7edf\u884c\u4e3a\u8868\u73b0\u7684\u7efc\u5408\u3002\u800c\u5b50\u7cfb\u7edf\u5185\u90e8\u7684\u5173\u952e\u8def\u5f84\uff0c\u51b3\u5b9a\u4e86\u5b50\u7cfb\u7edf\u4e3b\u8981\u7684\u884c\u4e3a\u8868\u73b0\uff0c\u6bd4\u5982\uff1a\u8c03\u5ea6\u7cfb\u7edf\u4e2d\u7684 CPU \u65f6\u95f4\u7edf\u8ba1\u3001\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u8fc1\u79fb\u7b49\u7b49\uff1b\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\u4e2d\u7684\u5185\u5b58\u5206\u914d\u3001NUMA \u5e73\u8861\uff1b\u865a\u62df\u5185\u5b58\u4e2d\u7684\u9875\u9762\u9519\u8bef\u3001\u4ea4\u6362\u6b21\u6570\u7b49\u7b49\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u968f\u7740\u5185\u6838\u8bbe\u8ba1\u7684\u89c4\u8303\u5316\uff0c\u5176\u5185\u90e8\u7684\u5173\u952e\u8282\u70b9\u548c\u5448\u73b0\u5728\u5916\u90e8\u7684\u8bed\u4e49\u90fd\u8d8a\u6765\u8d8a\u6e05\u6670\u548c\u6807\u51c6\u5316\u3002\u8981\u638c\u63e1\u5185\u6838\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u5176\u5b9e\u5e76\u4e0d\u9700\u8981\u968f\u5904\u89c2\u5bdf\uff0c\u53ea\u9700\u8981\u638c\u63e1\u51e0\u4e2a\u5173\u952e\u8282\u70b9\u3001\u5173\u952e\u4fe1\u606f\u5c31\u53ef\u4ee5\u4e86\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u4ee5\u5173\u952e\u53d8\u91cf\u4e3a\u57fa\u7840\uff0c\u5de5\u5177\u5f97\u4ee5\u5347\u7ea7\uff1b\u4ee5\u8bed\u4e49\u89c4\u8303\u5316\u4e3a\u57fa\u7840\uff0c\u4e3a\u4ea4\u4e92\u5f0f\u7684\u89c2\u6d4b\u673a\u5236\u63d0\u4f9b\u4e86\u57fa\u7840\u3002\u81f3\u6b64\uff0c\u89c2\u6d4b\u624b\u6bb5\u4e0d\u518d\u662f\u5355\u7eaf\u7684\u4fe1\u606f\u8f93\u51fa\uff0c\u5b83\u4e5f\u53ef\u4ee5\u53cd\u8fc7\u6765\u5f71\u54cd\u7cfb\u7edf\u884c\u4e3a\u5b9e\u73b0\u591a\u7ef4\u5ea6\u7684\u89c2\u6d4b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u865a\u62df\u6587\u4ef6\u7cfb\u7edf Proc \u9996\u5148\u6253\u901a\u4e86\u7528\u6237\u6001\u548c\u5185\u6838\u6001\u7684\u4ea4\u4e92\u901a\u9053\uff0c\u4ece\u539f\u6765\u53ea\u80fd\u63a7\u5236\u65e5\u5fd7\u7ea7\u522b\uff0c\u5230\u53ef\u4ee5\u63a7\u5236\u6570\u636e\u672c\u8eab\uff0c\u53ef\u4ee5\u63a7\u5236\u7684\u8303\u56f4\u66f4\u5e7f\u3001\u66f4\u6df1\u4e86\uff1b\u4ece\u6587\u672c\u4ea4\u4e92\uff0c\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u4ea4\u4e92\uff0c\u5185\u6838\u6027\u80fd\u53d7\u5230\u7684\u5f71\u54cd\u8fdb\u4e00\u6b65\u964d\u4f4e\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u63d0\u4f9b\u4e86\u6807\u51c6\u5316\u7684 API\uff0c\u7c7b\u578b\u7684\u652f\u6301\uff0c\u964d\u4f4e\u4e86\u5f00\u53d1\u96be\u5ea6\uff0c\u4fbf\u4e8e\u63a8\u5e7f\u4f7f\u7528\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u63d0\u70bc\u51fa\u5173\u952e\u53c2\u6570\uff0c\u901a\u8fc7\u865a\u62df\u6587\u4ef6\u7cfb\u7edf\u8fdb\u884c\u4ea4\u4e92\u5f0f\u7684\u7cfb\u7edf\u89c2\u6d4b\uff0c\u53cd\u8fc7\u6765\u6709\u5229\u4e8e\u5185\u6838\u7684\u89c4\u8303\u5316\u3002<\/div>\n<div><\/div>\n<div><\/div>\n<\/div>\n<h2>3.3.\u00a0<strong>\u84b8\u6c7d\u65f6\u4ee3<\/strong><\/h2>\n<div>\n<div><\/div>\n<div>Proc \u7684\u5b9a\u4e49\u5f88\u5927\u4e00\u90e8\u5206\uff0c\u8fd8\u662f\u4e0e\u5177\u4f53\u7684\u4e0a\u4e0b\u6587\u76f8\u5173\uff0c\u5e76\u4e0d\u9002\u5408\u5927\u6279\u91cf\u7684\u4f7f\u7528\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>Trace \u5b9a\u4e49\u4e86\u534f\u8bae\u89c4\u8303\uff0c\u62bd\u8c61\u5c42\u6b21\u66f4\u9ad8\uff0c\u53ef\u4ee5\u6279\u91cf\u4f7f\u7528\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>Trace \u662f\u4e00\u4e2a\u66f4\u52a0\u7eaf\u7cb9\u7684\u89c2\u6d4b\u673a\u5236\uff0c\u7ed9\u7528\u6237\u63d0\u4f9b\u4e86\u901a\u7528\u7b80\u5355\u7684\u63a5\u53e3\uff0c\u5e95\u5c42\u5b9e\u73b0\u4e86\u5f88\u4e30\u5bcc\u7684\u673a\u5236\u3002\u53ef\u4ee5\u652f\u6301\u5927\u91cf\u4f7f\u7528\uff0c\u5bf9\u4e8e\u53ef\u89c2\u6d4b\u6027\u7684\u63d0\u5347\u8d77\u5230\u4e86\u6839\u672c\u6027\u7684\u63a8\u52a8\u3002\u53ef\u4ee5\u6279\u91cf\u91cd\u590d\u4f7f\u7528\uff0c\u8fd9\u662f\u5b83\u548c\u5176\u4ed6\u89c2\u6d4b\u65b9\u5f0f\u7684\u533a\u522b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u5982\u679c\u8bf4 Proc \u91c7\u7528\u4e86\u4ee3\u7801\u6570\u636e\u5316\u7684\u601d\u60f3\uff0c\u90a3\u4e48 Trace \u91c7\u7528\u5f88\u591a\u5143\u7f16\u7a0b\u7684\u601d\u60f3\uff0c\u6781\u5927\u7b80\u5316\u4e86\u5916\u90e8\u63a5\u53e3\uff0c\u51cf\u5c11\u4e86\u91cd\u590d\u4ee3\u7801\u3002<\/div>\n<div><\/div>\n<div><\/div>\n<\/div>\n<h2>3.4.\u00a0<strong>\u7535\u6c14\u65f6\u4ee3<\/strong><\/h2>\n<div>\n<div>Trace \u673a\u5236\u56fa\u7136\u597d\u7528\uff0c\u53ea\u8981\u9884\u5148\u94fa\u8bbe\u4e86\u57fa\u7840\u8bbe\u65bd\uff0c\u8fd0\u884c\u65f6\u5c31\u53ef\u4ee5\u968f\u65f6\u5f00\u542f\u89c2\u6d4b\u3002\u4f46\u7f3a\u70b9\u662f\uff0c\u5bf9\u4e8e\u6ca1\u6709\u94fa\u8bbe\u94c1\u8f68\u7684\u5730\u65b9\uff0c\u706b\u8f66\u7684\u627f\u8f7d\u80fd\u529b\u518d\u5f3a\u4e5f\u662f\u65e0\u6cd5\u5230\u8fbe\u7684\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>Trace \u7684\u673a\u5236\u5f88\u901a\u7528\uff0c\u4f46\u53e6\u4e00\u65b9\u9762\uff0c\u5b83\u65e0\u6cd5\u6df1\u5165\u4e1a\u52a1\u5c42\u9762\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u8c03\u6d4b\u3002\u8981\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff0c\u9700\u8981\u5b8c\u6574\u7684\u4e0a\u4e0b\u6587\u80fd\u529b\u548c\u53ef\u7f16\u7a0b\u80fd\u529b\uff0c\u56e0\u6b64 kprobe \u51fa\u73b0\u4e86\u3002<\/div>\n<div><\/div>\n<\/div>\n<div>\n<div>\u53ea\u8981\u7531\u51fd\u6570\u7684\u5730\u65b9\uff0c\u5c31\u50cf\u901a\u4e86\u7535\u4e00\u6837\uff0c\u968f\u65f6\u53ef\u4ee5\u70b9\u4eae\uff0c\u8fd9\u662f Kprobe \u5f3a\u4e8e Trace \u7684\u8986\u76d6\u80fd\u529b\u3002\u80fd\u591f\u5b8c\u6574\u8bbf\u95ee\u51fd\u6570\u4e0a\u4e0b\u6587\uff0c\u8fd9\u662f Kprobe \u5f3a\u4e8e Trace \u7684\u4e1a\u52a1\u7406\u89e3\u80fd\u529b\u3002<\/div>\n<div><\/div>\n<\/div>\n<div><\/div>\n<h2>3.5.\u00a0<strong>\u667a\u80fd\u65f6\u4ee3<\/strong><\/h2>\n<div><\/div>\n<div>\n<div>Kprobe \u662f\u52a8\u6001\u6027\u7684\u840c\u82bd\uff0c\u4f46\u662f\u5f88\u591a\u65b9\u9762\u4e0d\u8db3\u3002\u5b83\u5728\u5185\u6838\u6001\u8fd0\u884c\uff0c\u9700\u8981\u5bf9\u5185\u6838\u7f16\u7a0b\u6709\u4e00\u5b9a\u4e86\u89e3\uff0c\u7f16\u7a0b\u95e8\u69db\u8f83\u9ad8\u3002\u5b83\u6709\u5b89\u5168\u6027\u95ee\u9898\uff0c\u5b83\u8fd8\u6709\u53ef\u6269\u5c55\u6027\u95ee\u9898\uff0c\u7b49\u7b49\u3002<\/div>\n<\/div>\n<div>\n<div><\/div>\n<div>\u4ece\u8ba1\u7b97\u80fd\u529b\u6765\u8bf4\uff0c\u6240\u6709\u56fe\u7075\u673a\u7684\u8ba1\u7b97\u80fd\u529b\u662f\u76f8\u7b49\u7684\uff0c\u8981\u89e3\u51b3\u80fd\u529b\u95ee\u9898\uff0c\u6700\u7ec8\u662f\u8981\u5b9e\u73b0\u4e00\u4e2a\u865a\u62df\u673a\u7684\u3002\u800c\u5728\u5185\u6838\u6001\u5b9e\u73b0\u4e00\u4e2a\u865a\u62df\u673a\uff0c\u6240\u6d89\u53ca\u5230\u7684\u5b89\u5168\u95ee\u9898\u662f\u5fc5\u987b\u8003\u8651\u7684\uff0c\u901a\u8fc7 Verifier \u548c\u8fd0\u884c\u65f6 Helper \u51fd\u6570\uff0c\u505a\u5230\u4e86\u903b\u8f91\u7ea6\u675f\u548c\u4e0a\u4e0b\u6587\u9694\u79bb\u3002\u865a\u62df\u673a\u3001Verifier \u548c Helper \u51fd\u6570\uff0c\u662f BPF \u548c Kprobe \u7684\u6839\u672c\u533a\u522b\u3002<\/div>\n<div><\/div>\n<div><\/div>\n<div><img class=\"aligncenter\" src=\"https:\/\/storage.deepin.org\/thread\/202306201552265458_%E6%96%87%E7%AB%A0.png\" alt=\"\u6587\u7ae0.png\" \/><\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: right;\">\u5185\u5bb9\u6765\u6e90\uff1a<a href=\"https:\/\/bbs.deepin.org\/post\/258410\">deepin\u793e\u533a<\/a><\/p>\n<p style=\"text-align: right;\">\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904<\/p>","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u524d\u8a00\uff1a\u6280\u672f\u7684\u53d1\u5c55\u5f80\u5f80\u662f\u79ef\u8dec\u6b65\u800c\u81f3\u5343\u91cc\u7684\u3002Linux\u4ece92\u5e74\u8bde\u751f\uff0c\u53d1\u5c55\u81f3\u4eca\u5df2\u7ecf\u8986\u76d6\u5927\u5c0f\u5404\u7c7b\u7684\u4fe1\u606f\u57fa\u7840\u8bbe\u65bd\u3002\u662f\u4ec0\u4e48\u6837\u7684\u529b\u91cf\uff0c\u8ba9Linux\u80fd\u591f\u59cb\u7ec8\u4fdd\u6301\u53d1\u5c55\u6d3b\u529b\uff0c\u53c8\u5982\u4f55\u770b\u5f85Linux\u4e4b\u4e0a\u51fa\u73b0\u7684\u65b0\u7684\u6280\u672f\u8d8b\u52bf\uff1f \u672c\u6587\u8bd5\u56fe\u901a\u8fc7\u68b3\u7406eBPF\u7684\u6f14\u8fdb\u8fc7\u7a0b\uff0c\u63a2\u7d22Linux\u5185\u6838\u7684\u53d1\u5c55\u52a8\u529b\u6765\u6e90\u4e0e\u53d1\u5c55\u8f68\u8ff9\uff0c\u4e0e\u5927\u5bb6\u4e00\u540c\u7545\u60f3eBPF\u7ed9\u5185\u6838\u6280\u672f\u3001Linux\u751f\u6001\u5e26\u6765\u7684\u5168\u65b0\u53d8\u5c40\u3002 \u524d\u671f\u56de\u987e\uff1a eBPF \u7684\u53d1\u5c55\u6f14\u8fdb --- ...<a href=https:\/\/www.deepin.org.cn\/zh\/evolution-of-ebpf-2\/>\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":11164,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[155,93],"tags":[],"_links":{"self":[{"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/posts\/33269"}],"collection":[{"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/users\/11164"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/comments?post=33269"}],"version-history":[{"count":2,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/posts\/33269\/revisions"}],"predecessor-version":[{"id":33271,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/posts\/33269\/revisions\/33271"}],"wp:attachment":[{"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/media?parent=33269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/categories?post=33269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deepin.org.cn\/zh\/wp-json\/wp\/v2\/tags?post=33269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}