{"id":208888,"date":"2021-01-12T10:12:17","date_gmt":"2021-01-12T02:12:17","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=208888"},"modified":"2021-01-05T09:13:09","modified_gmt":"2021-01-05T01:13:09","slug":"linux-irq","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/linux-irq.html","title":{"rendered":"Linux \u5185\u6838\u5904\u7406\u4e2d\u65ad\u5168\u8fc7\u7a0b\u89e3\u6790"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>\u4e2d\u65ad\u662f\u73b0\u4ee3 CPU \u5de5\u4f5c\u65b9\u5f0f\u4e2d\u91cd\u8981\u7684\u90e8\u5206\u3002\u4f8b\u5982\uff1a\u5f53\u4f60\u6bcf\u6b21\u5728\u952e\u76d8\u4e0a\u6309\u4e0b\u4e00\u4e2a\u6309\u952e\u540e\uff0cCPU \u4f1a\u88ab\u4e2d\u65ad\u4ee5\u4f7f\u5f97 PC \u8bfb\u53d6\u7528\u6237\u952e\u76d8\u7684\u8f93\u5165\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53d1\u751f\u5f97\u76f8\u5f53\u5feb\uff0c\u4ee5\u81f4\u4e8e\u5728\u4f7f\u7528\u4f53\u9a8c\u4e0a\u4f60\u4e0d\u4f1a\u611f\u5230\u4efb\u4f55\u53d8\u5316\u6216\u635f\u5bb3\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6b64\u5916\uff0c\u952e\u76d8\u5e76\u4e0d\u662f\u5bfc\u81f4\u4e2d\u65ad\u7684\u552f\u4e00\u7ec4\u4ef6\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u6709\u4e09\u79cd\u7c7b\u578b\u7684\u4e8b\u4ef6\u4f1a\u5bfc\u81f4 CPU \u53d1\u751f\u4e2d\u65ad\uff1a\u786c\u4ef6\u4e2d\u65ad\u3001\u8f6f\u4ef6\u4e2d\u65ad\u548c\u5f02\u5e38\u3002\u5728\u5177\u4f53\u4ecb\u7ecd\u4e0d\u540c\u7c7b\u578b\u7684\u4e2d\u65ad\u524d\uff0c\u6211\u9700\u8981\u5148\u5b9a\u4e49\u4e00\u4e9b\u672f\u8bed\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-208889 size-full\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/49e6b82c8540e84ad3eb143cea5451e2.jpg-wh_651x-s_3243425983.jpg\" alt=\"\" width=\"600\" height=\"338\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/49e6b82c8540e84ad3eb143cea5451e2.jpg-wh_651x-s_3243425983.jpg 600w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/49e6b82c8540e84ad3eb143cea5451e2.jpg-wh_651x-s_3243425983-300x169.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u5b9a\u4e49<\/strong><\/div>\n<p>\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u662f\u7531\u53ef\u7f16\u7a0b\u7684\u4e2d\u65ad\u63a7\u5236\u5668\uff08PIC\uff09\u53d1\u8d77\u7684\uff0c\u5176\u76ee\u7684\u662f\u4e3a\u4e86\u4e2d\u65ad CPU \u548c\u6267\u884c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\uff08ISR\uff09\u3002\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\uff08ISR\uff09\u662f\u4e00\u4e2a\u5c0f\u7684\u7a0b\u5e8f\uff0c\u7528\u6765\u5904\u7406\u5177\u4f53\u7684\u6570\u636e\uff0c\u5176\u5177\u4f53\u7684\u5904\u7406\u65b9\u5f0f\u4f9d\u8d56\u4e8e\u9020\u6210\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u7684\u539f\u56e0\u3002\u4e4b\u524d\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u5728\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\uff08ISR\uff09\u8fd0\u884c\u7ed3\u675f\u524d\u90fd\u4f1a\u88ab\u4e2d\u65ad\u3002<\/p>\n<p>\u5728\u8fc7\u53bb\uff0c\u4e2d\u65ad\u8bf7\u6c42\u7531\u5355\u72ec\u7684\u82af\u7247\u5904\u7406\uff08\u4e2d\u65ad\u63a7\u5236\u5668\u82af\u7247 PIC\uff09\uff0cI\/O \u8bbe\u5907\u76f4\u63a5\u4e0e\u4e2d\u65ad\u63a7\u5236\u5668\uff08PIC\uff09\u76f8\u8fde\u3002\u4e2d\u65ad\u63a7\u5236\u5668\uff08PIC\uff09\u7ba1\u7406\u7740\u591a\u79cd\u786c\u4ef6\u7684\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\uff0c\u5e76\u4e14\u53ef\u4ee5\u76f4\u63a5\u4e0e CPU \u901a\u4fe1\u3002\u5f53\u4e00\u4e2a\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u4ea7\u751f\u540e\uff0c\u4e2d\u65ad\u63a7\u5236\u5668\uff08PIC\uff09\u5411 CPU \u5199\u5165\u6570\u636e\uff0c\u5e76\u4e14\u89e6\u53d1\u4e2d\u65ad\u8bf7\u6c42\u5f15\u811a\uff08INTR\uff09\u3002<\/p>\n<p>\u73b0\u5982\u4eca\uff0c\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u7531 CPU \u4e2d\u7684\u9ad8\u7ea7\u53ef\u7f16\u7a0b\u4e2d\u65ad\u63a7\u5236\u5668advanced programmable interrupt controller\uff08APIC\uff09\u90e8\u5206\u6765\u5904\u7406\u3002\u6bcf\u4e2a\u6838\u4e2d\u90fd\u62e5\u6709\u5c5e\u4e8e\u81ea\u5df1\u7684\u9ad8\u7ea7\u53ef\u7f16\u7a0b\u4e2d\u65ad\u63a7\u5236\u5668\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u4e2d\u65ad\u7684\u7c7b\u578b<\/strong><\/div>\n<p>\u6b63\u5982\u6211\u524d\u6587\u4e2d\u63d0\u5230\u7684\uff0c\u4e2d\u65ad\u53ef\u4ee5\u6839\u636e\u5176\u6765\u6e90\u5206\u4e3a\u4e09\u79cd\u7c7b\u578b\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"margin-top:2em;margin-bottom:1em\"><span style=\"color:#1E1E1E;letter-spacing: 2px;border-left:#FF3030 3px solid;border-right:#FF3030 3px solid;padding-left: 8px;padding-right:8px;font-size: 12pt\"><strong>\u786c\u4ef6\u4e2d\u65ad<\/strong><\/span><\/div>\n<p>\u5f53\u4e00\u4e2a\u786c\u4ef6\u8bbe\u5907\u60f3\u8981\u544a\u8bc9 CPU \u67d0\u4e00\u9700\u8981\u5904\u7406\u7684\u6570\u636e\u5df2\u7ecf\u51c6\u5907\u597d\u540e\uff08\u4f8b\u5982\uff1a\u5f53\u952e\u76d8\u88ab\u6309\u4e0b\u6216\u8005\u4e00\u4e2a\u6570\u636e\u5305\u5230\u4e86\u7f51\u7edc\u63a5\u53e3\u5904\uff09\uff0c\u5b83\u5c06\u4f1a\u53d1\u9001\u4e00\u4e2a\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u6765\u544a\u8bc9 CPU \u6570\u636e\u662f\u53ef\u7528\u7684\u3002\u63a5\u4e0b\u6765\u4f1a\u8c03\u7528\u5728\u5185\u6838\u542f\u52a8\u65f6\u8bbe\u5907\u9a71\u52a8\u6ce8\u518c\u7684\u5bf9\u5e94\u7684\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\uff08ISR\uff09\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"margin-top:2em;margin-bottom:1em\"><span style=\"color:#1E1E1E;letter-spacing: 2px;border-left:#FF3030 3px solid;border-right:#FF3030 3px solid;padding-left: 8px;padding-right:8px;font-size: 12pt\"><strong>\u8f6f\u4ef6\u4e2d\u65ad<\/strong><\/span><\/div>\n<p>\u5f53\u4f60\u5728\u64ad\u653e\u4e00\u4e2a\u89c6\u9891\u65f6\uff0c\u97f3\u9891\u548c\u89c6\u9891\u662f\u540c\u6b65\u64ad\u653e\u662f\u76f8\u5f53\u91cd\u8981\u7684\uff0c\u8fd9\u6837\u97f3\u4e50\u7684\u901f\u5ea6\u624d\u4e0d\u4f1a\u53d8\u5316\u3002\u8fd9\u662f\u7531\u8f6f\u4ef6\u4e2d\u65ad\u5b9e\u73b0\u7684\uff0c\u7531\u7cbe\u786e\u7684\u8ba1\u65f6\u5668\u7cfb\u7edf\uff08\u79f0\u4e3a\u00a0jiffies\uff09\u91cd\u590d\u53d1\u8d77\u7684\u3002\u8fd9\u4e2a\u8ba1\u65f6\u5668\u4f1a\u4f7f\u5f97\u4f60\u7684\u97f3\u4e50\u64ad\u653e\u5668\u540c\u6b65\u3002\u8f6f\u4ef6\u4e2d\u65ad\u4e5f\u53ef\u4ee5\u88ab\u7279\u6b8a\u7684\u6307\u4ee4\u6240\u8c03\u7528\uff0c\u6765\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\u5230\u786c\u4ef6\u8bbe\u5907\u3002<\/p>\n<p>\u5f53\u7cfb\u7edf\u9700\u8981\u5b9e\u65f6\u6027\u65f6\uff08\u4f8b\u5982\u5728\u5de5\u4e1a\u5e94\u7528\u4e2d\uff09\uff0c\u8f6f\u4ef6\u4e2d\u65ad\u4f1a\u53d8\u5f97\u91cd\u8981\u3002\u4f60\u53ef\u4ee5\u5728 Linux \u57fa\u91d1\u4f1a\u7684\u6587\u7ae0\u4e2d\u627e\u5230\u66f4\u591a\u76f8\u5173\u4fe1\u606f\uff1a\u9762\u5411\u5d4c\u5165\u5f0f\u5f00\u53d1\u8005\u7684\u5b9e\u65f6 Linux \u4ecb\u7ecd\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"margin-top:2em;margin-bottom:1em\"><span style=\"color:#1E1E1E;letter-spacing: 2px;border-left:#FF3030 3px solid;border-right:#FF3030 3px solid;padding-left: 8px;padding-right:8px;font-size: 12pt\"><strong>\u5f02\u5e38<\/strong><\/span><\/div>\n<p>\u5f02\u5e38exception\u662f\u4f60\u53ef\u80fd\u4e4b\u524d\u5c31\u77e5\u9053\u7684\u4e2d\u65ad\u7c7b\u578b\u3002\u5f53 CPU \u6267\u884c\u4e00\u4e9b\u5c06\u4f1a\u5bfc\u81f4\u9664\u96f6\u6216\u7f3a\u9875\u9519\u8bef\u7684\u6307\u4ee4\u65f6\uff0c\u4efb\u4f55\u5176\u4ed6\u8fd0\u884c\u4e2d\u7684\u7a0b\u5e8f\u90fd\u4f1a\u88ab\u4e2d\u65ad\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f60\u4f1a\u88ab\u4e00\u4e2a\u5f39\u7a97\u63d0\u9192\uff0c\u6216\u5728\u63a7\u5236\u53f0\u8f93\u51fa\u4e2d\u770b\u5230**\u6bb5\u9519\u8befsegmentation fault\uff08\u6838\u5fc3\u5df2\u8f6c\u50a8core dumped\uff09**\u3002\u4f46\u5e76\u4e0d\u662f\u6240\u6709\u5f02\u5e38\u90fd\u662f\u7531\u6307\u4ee4\u9519\u8bef\u5f15\u8d77\u7684\u3002<\/p>\n<p>\u5f02\u5e38\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5206\u4e3a\u9519\u8befFault\u3001\u9677\u9631Trap\u548c\u7ec8\u6b62Abort\u3002<\/p>\n<ul>\n<li><strong>\u9519\u8bef<\/strong>\uff1a\u9519\u8bef\u662f\u7cfb\u7edf\u53ef\u4ee5\u7ea0\u6b63\u7684\u5f02\u5e38\u3002\u4f8b\u5982\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u5c1d\u8bd5\u8bbf\u95ee\u67d0\u4e2a\u5df2\u7ecf\u88ab\u6362\u51fa\u5230\u786c\u76d8\u7684\u9875\u65f6\u3002\u5f53\u8bf7\u6c42\u7684\u5730\u5740\u5728\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e2d\uff0c\u5e76\u4e14\u6ee1\u8db3\u8bbf\u95ee\u6743\u9650\u65f6\uff0c\u5982\u679c\u9875\u4e0d\u5728\u5185\u5b58\uff08RAM\uff09\u4e2d\uff0c\u5c06\u4f1a\u4ea7\u751f\u4e00\u4e2a\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\uff0c\u5e76\u5f00\u59cb\u542f\u7528<strong>\u7f3a\u9875\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f<\/strong>\u628a\u6240\u9700\u7684\u9875\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002\u5982\u679c\u64cd\u4f5c\u6210\u529f\u6267\u884c\uff0c\u7a0b\u5e8f\u5c06\u7ee7\u7eed\u8fd0\u884c\u3002<\/li>\n<li><strong>\u9677\u9631<\/strong>\uff1a\u9677\u9631\u4e3b\u8981\u7528\u5728\u8c03\u8bd5\u4e2d\u3002\u5982\u679c\u4f60\u5728\u67d0\u4e2a\u7a0b\u5e8f\u4e2d\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u65ad\u70b9\uff0c\u4f60\u5c31\u63d2\u5165\u4e86\u4e00\u6761\u53ef\u4ee5\u89e6\u53d1\u9677\u9631\u6267\u884c\u7684\u7279\u6b8a\u6307\u4ee4\u3002\u9677\u9631\u53ef\u4ee5\u89e6\u53d1\u4e0a\u4e0b\u6587\u5207\u6362\u6765\u5141\u8bb8\u4f60\u7684\u8c03\u8bd5\u5668\u8bfb\u53d6\u548c\u5c55\u793a\u5c40\u90e8\u53d8\u91cf\u7684\u503c\u3002\u4e4b\u540e\u7a0b\u5e8f\u53ef\u4ee5\u7ee7\u7eed\u8fd0\u884c\u3002\u9677\u9631\u540c\u6837\u4e5f\u662f\u8fd0\u884c\u7cfb\u7edf\u8c03\u7528\u7684\u65b9\u5f0f\uff08\u5982\u6740\u6b7b\u4e00\u4e2a\u8fdb\u7a0b\uff09<\/li>\n<li><strong>\u7ec8\u6b62<\/strong>\uff1a\u7ec8\u6b62\u662f\u7531\u7cfb\u7edf\u8868\u4e2d\u7684\u786c\u4ef6\u9519\u8bef\u6216\u503c\u4e0d\u4e00\u81f4\u800c\u5bfc\u81f4\u7684\u3002\u7ec8\u6b62\u4e0d\u4f1a\u62a5\u544a\u9020\u6210\u5f02\u5e38\u7684\u6307\u4ee4\u7684\u6240\u5728\u4f4d\u7f6e\u3002\u8fd9\u662f\u6700\u4e25\u91cd\u7684\u4e2d\u65ad\uff0c\u7ec8\u6b62\u5c06\u4f1a\u8c03\u7528\u7cfb\u7edf\u7684<strong>\u7ec8\u6b62\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f<\/strong>\u6765\u7ed3\u675f\u9020\u6210\u5f02\u5e38\u7684\u8fdb\u7a0b\u3002<\/li>\n<\/ul>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u52a8\u624b\u5b9e\u8df5<\/strong><\/div>\n<p>\u4e2d\u65ad\u8bf7\u6c42\u6309\u7167\u9ad8\u7ea7\u53ef\u7f16\u7a0b\u4e2d\u65ad\u63a7\u5236\u5668\uff08APIC\uff09\u4e2d\u7684\u4f18\u5148\u7ea7\u9ad8\u4f4e\u6392\u5e8f\uff080\u662f\u6700\u9ad8\u4f18\u5148\u7ea7\uff09\u3002\u524d 32 \u4e2a\u4e2d\u65ad\uff080~31\uff09\u662f\u7531 CPU \u6307\u5b9a\u7684\u56fa\u5b9a\u5e8f\u5217\u3002\u4f60\u53ef\u4ee5\u5728\u00a0OsDev \u5f02\u5e38\u00a0\u9875\u9762\u627e\u5230\u5173\u4e8e\u5b83\u4eec\u7684\u6982\u8ff0\u3002\u968f\u540e\u7684\u4e2d\u65ad\u8bf7\u6c42\u53ef\u4ee5\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u8fdb\u884c\u5206\u914d\u3002\u4e2d\u65ad\u63cf\u8ff0\u8868interrupt descriptor table\uff08IDT\uff09\u4e2d\u8bb0\u5f55\u4e86\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u548c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\uff08ISR\uff09\u7684\u5bf9\u5e94\u5173\u7cfb\u3002Linux \u4e2d\u5b9a\u4e49\u4e86\u4ece 0 \u5230 256 \u7684 IRQ \u5411\u91cf\u3002<\/p>\n<p>\u4e3a\u4e86\u6253\u5370\u51fa\u5728\u4f60\u7684\u7cfb\u7edf\u4e2d\u5df2\u6ce8\u518c\u7684\u4e2d\u65ad\uff0c\u6253\u5f00\u4e00\u4e2a\u7ec8\u7aef\u5e76\u8f93\u5165\uff1a<\/p>\n<pre>cat \/proc\/interrupts<\/pre>\n<p>\u4f60\u5e94\u8be5\u4f1a\u770b\u5230\u7c7b\u4f3c\u5982\u4e0b\u56fe\u7684\u7ed3\u679c\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-208890 size-full\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/f65efdbffa306128d615f5b18230c6b7.png-wh_600x-s_3462053295.png\" alt=\"\" width=\"600\" height=\"180\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/f65efdbffa306128d615f5b18230c6b7.png-wh_600x-s_3462053295.png 600w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/f65efdbffa306128d615f5b18230c6b7.png-wh_600x-s_3462053295-300x90.png 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p class=\"article_img_desc\"><em>\u5185\u6838\u7248\u672c\u4e3a5.6.6\u4e2d\u6ce8\u518c\u7684\u4e2d\u65ad\u00a0(Stephan Avenwedde,\u00a0CC BY-SA 4.0)<\/em><\/p>\n<p>\u4ece\u5de6\u5230\u53f3\u5404\u5217\u7684\u542b\u4e49\u4f9d\u6b21\u4e3a\uff1a\u4e2d\u65ad\u5411\u91cf\u53f7\u3001\u6bcf\u4e2a CPU\uff080~n\uff09\u4e2d\u65ad\u53d1\u751f\u6b21\u6570\u3001\u786c\u4ef6\u6765\u6e90\u3001\u786c\u4ef6\u6e90\u901a\u9053\u4fe1\u606f\u3001\u4ee5\u53ca\u9020\u6210\u4e2d\u65ad\u8bf7\u6c42\u7684\u8bbe\u5907\u540d\u3002<\/p>\n<p>\u5728\u8868\u7684\u672b\u5c3e\uff0c\u6709\u4e00\u4e9b\u975e\u6570\u5b57\u7684\u4e2d\u65ad\u3002\u5b83\u4eec\u662f\u7279\u5b9a\u4e8e\u4f53\u7cfb\u7ed3\u6784\u7684\u4e2d\u65ad\uff0c\u5982\u672c\u5730\u8ba1\u65f6\u5668\u4e2d\u65adlocal timer interrupt\uff08LOC\uff09\u7684\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u53f7\u4e3a 236\u3002\u5176\u4e2d\u4e00\u4e9b\u5728 Linux \u5185\u6838\u6e90\u6811\u4e2d\u7684Linux IRQ \u5411\u91cf\u5e03\u5c40\u4e2d\u6307\u5b9a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-208891 size-full\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/1-1.png\" alt=\"\" width=\"600\" height=\"300\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/1-1.png 600w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/01\/1-1-300x150.png 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p class=\"article_img_desc\"><em>\u7279\u5b9a\u4e8e\u4f53\u7cfb\u7ed3\u6784\u7684\u4e2d\u65ad (Stephan Avenwedde,\u00a0CC BY-SA 4.0)<\/em><\/p>\n<p>\u5982\u679c\u8981\u5b9e\u65f6\u83b7\u53d6\u8be5\u8868\uff0c\u8bf7\u8fd0\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre>watch -n1 \"cat \/proc\/interrupts\"<\/pre>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u603b\u7ed3<\/strong><\/div>\n<p>\u6b63\u786e\u7684\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u5904\u7406\u5bf9\u4e8e\u786c\u4ef6\u3001\u9a71\u52a8\u548c\u8f6f\u4ef6\u7684\u6b63\u5e38\u4ea4\u4e92\u662f\u5fc5\u8981\u7684\u3002\u5e78\u8fd0\u5730\u662f\uff0cLinux \u5185\u6838\u5f88\u597d\u5730\u5b8c\u6210\u4e86\u5b83\uff0c\u4e00\u4e2a PC \u7684\u666e\u901a\u7528\u6237\u51e0\u4e4e\u4e0d\u4f1a\u6ce8\u610f\u5230\u5185\u6838\u7684\u6574\u4e2a\u4e2d\u65ad\u5904\u7406\u8fc7\u7a0b\u3002<br \/>\n\u4e2d\u65ad\u76f8\u5f53\u590d\u6742\uff0c\u672c\u6587\u4ec5\u4ec5\u662f\u4e00\u4e2a\u5173\u4e8e\u4e2d\u65ad\u7684\u6982\u8ff0\u3002\u5982\u679c\u60f3\u8981\u6df1\u5165\u4e86\u89e3\u8be5\u4e3b\u9898\u53ef\u4ee5\u9605\u8bfb\u00a0Linux Inside \u7535\u5b50\u4e66\uff08CC BY-NC-SA 4.0\uff09\u548c\u00a0Linux \u5185\u6838\u6559\u7a0b \u4ed3\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6b64\u5916\uff0c\u952e\u76d8\u5e76\u4e0d\u662f\u5bfc\u81f4\u4e2d\u65ad\u7684\u552f\u4e00\u7ec4\u4ef6\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u6709\u4e09\u79cd\u7c7b\u578b\u7684\u4e8b\u4ef6\u4f1a\u5bfc\u81f4 CPU \u53d1\u751f\u4e2d\u65ad\uff1a\u786c\u4ef6\u4e2d\u65ad\u3001\u8f6f\u4ef6\u4e2d\u65ad\u548c\u5f02 [&hellip;]<\/p>\n","protected":false},"author":323,"featured_media":192404,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-208888","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/208888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/323"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=208888"}],"version-history":[{"count":1,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/208888\/revisions"}],"predecessor-version":[{"id":208892,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/208888\/revisions\/208892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/192404"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=208888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=208888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=208888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}