8sphinx.addnodesdocument)}( rawsourcechildren]( translations LanguagesNode)}(hhh](h pending_xref)}(hhh]docutils.nodesTextEnglish}parenthsba attributes}(ids]classes]names]dupnames]backrefs] refdomainstdreftypedoc reftarget/core-api/irq/irq-affinitymodnameN classnameN refexplicitutagnamehhh ubh)}(hhh]hChinese (Traditional)}hh2sbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget-/translations/zh_TW/core-api/irq/irq-affinitymodnameN classnameN refexplicituh1hhh ubh)}(hhh]hItalian}hhFsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget-/translations/it_IT/core-api/irq/irq-affinitymodnameN classnameN refexplicituh1hhh ubh)}(hhh]hJapanese}hhZsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget-/translations/ja_JP/core-api/irq/irq-affinitymodnameN classnameN refexplicituh1hhh ubh)}(hhh]hKorean}hhnsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget-/translations/ko_KR/core-api/irq/irq-affinitymodnameN classnameN refexplicituh1hhh ubh)}(hhh]hSpanish}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget-/translations/sp_SP/core-api/irq/irq-affinitymodnameN classnameN refexplicituh1hhh ubeh}(h]h ]h"]h$]h&]current_languageChinese (Simplified)uh1h hh _documenthsourceNlineNubhnote)}(hX{此文件的目的是为让中文读者更容易阅读和理解,而不是作为一个分支。 因此, 如果您对此文件有任何意见或更新,请先尝试更新原始英文文件。 如果您发现本文档与原始文件有任何不同或者有翻译问题,请发建议或者补丁给 该文件的译者,或者请求中文文档维护者和审阅者的帮助。h]h paragraph)}(hX{此文件的目的是为让中文读者更容易阅读和理解,而不是作为一个分支。 因此, 如果您对此文件有任何意见或更新,请先尝试更新原始英文文件。 如果您发现本文档与原始文件有任何不同或者有翻译问题,请发建议或者补丁给 该文件的译者,或者请求中文文档维护者和审阅者的帮助。h]hX{此文件的目的是为让中文读者更容易阅读和理解,而不是作为一个分支。 因此, 如果您对此文件有任何意见或更新,请先尝试更新原始英文文件。 如果您发现本文档与原始文件有任何不同或者有翻译问题,请发建议或者补丁给 该文件的译者,或者请求中文文档维护者和审阅者的帮助。}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hh5Documentation/translations/zh_CN/disclaimer-zh_CN.rsthKhhubah}(h]h ]h"]h$]h&]uh1hhhhhhhhNubh field_list)}(hhh](hfield)}(hhh](h field_name)}(hOriginalh]hOriginal}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhZ/var/lib/git/docbuild/linux/Documentation/translations/zh_CN/core-api/irq/irq-affinity.rsthKubh field_body)}(h,Documentation/core-api/irq/irq-affinity.rst 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bullet_list)}(hhh](h list_item)}(h<作者:最初由Ingo Molnar 开始撰写h]h)}(hjh](h作者:最初由Ingo Molnar <}(hjhhhNhNubj)}(hmingo@redhat.comh]hmingo@redhat.com}(hjhhhNhNubah}(h]h ]h"]h$]h&]refurimailto:mingo@redhat.comuh1jhjubh >开始撰写}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1jhjubj)}(h;后期更新维护: Max Krasnyansky h]h)}(h9后期更新维护: Max Krasnyansky h](h'后期更新维护: Max Krasnyansky <}(hjhhhNhNubj)}(hmaxk@qualcomm.comh]hmaxk@qualcomm.com}(hjhhhNhNubah}(h]h ]h"]h$]h&]refurimailto:maxk@qualcomm.comuh1jhjubh>}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]bullet-uh1jhhhKhjubah}(h]h ]h"]h$]h&]uh1jhjnubeh}(h]h ]h"]h$]h&]uh1jlhhhKhjiubah}(h]h ]h"]h$]h&]uh1jghjThhhNhNubh)}(hX/proc/irq/IRQ#/smp_affinity和/proc/irq/IRQ#/smp_affinity_list指定了哪些CPU能 够关联到一个给定的IRQ源,这两个文件包含了这些指定cpu的cpu位掩码(smp_affinity)和cpu列 表(smp_affinity_list)。它不允许关闭所有CPU, 同时如果IRQ控制器不支持中断请求亲和 (IRQ affinity),那么所有cpu的默认值将保持不变(即关联到所有CPU).h]hX/proc/irq/IRQ#/smp_affinity和/proc/irq/IRQ#/smp_affinity_list指定了哪些CPU能 够关联到一个给定的IRQ源,这两个文件包含了这些指定cpu的cpu位掩码(smp_affinity)和cpu列 表(smp_affinity_list)。它不允许关闭所有CPU, 同时如果IRQ控制器不支持中断请求亲和 (IRQ affinity),那么所有cpu的默认值将保持不变(即关联到所有CPU).}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjThhubh)}(h/proc/irq/default_smp_affinity指明了适用于所有非激活IRQ的默认亲和性掩码。一旦IRQ被 分配/激活,它的亲和位掩码将被设置为默认掩码。然后可以如上所述改变它。默认掩码是0xffffffff。h]h/proc/irq/default_smp_affinity指明了适用于所有非激活IRQ的默认亲和性掩码。一旦IRQ被 分配/激活,它的亲和位掩码将被设置为默认掩码。然后可以如上所述改变它。默认掩码是0xffffffff。}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjThhubh)}(hr下面是一个先将IRQ44(eth1)限制在CPU0-3上,然后限制在CPU4-7上的例子(这是一个8CPU的SMP box)h]hr下面是一个先将IRQ44(eth1)限制在CPU0-3上,然后限制在CPU4-7上的例子(这是一个8CPU的SMP box)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjThhubh literal_block)}(hXf[root@moon 44]# cd /proc/irq/44 [root@moon 44]# cat smp_affinity ffffffff [root@moon 44]# echo 0f > smp_affinity [root@moon 44]# cat smp_affinity 0000000f [root@moon 44]# ping -f h PING hell (195.4.7.3): 56 data bytes ... --- hell ping statistics --- 6029 packets transmitted, 6027 packets received, 0% packet loss round-trip min/avg/max = 0.1/0.1/0.4 ms [root@moon 44]# cat /proc/interrupts | grep 'CPU\|44:' CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 44: 1068 1785 1785 1783 0 0 0 0 IO-APIC-level eth1h]hXf[root@moon 44]# cd /proc/irq/44 [root@moon 44]# cat smp_affinity ffffffff [root@moon 44]# echo 0f > smp_affinity [root@moon 44]# cat smp_affinity 0000000f [root@moon 44]# ping -f h PING hell (195.4.7.3): 56 data bytes ... --- hell ping statistics --- 6029 packets transmitted, 6027 packets received, 0% packet loss round-trip min/avg/max = 0.1/0.1/0.4 ms [root@moon 44]# cat /proc/interrupts | grep 'CPU\|44:' CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 44: 1068 1785 1785 1783 0 0 0 0 IO-APIC-level eth1}hj+sbah}(h]h ]h"]h$]h&] xml:spacepreserveuh1j)hhhK hjThhubh)}(h}从上面一行可以看出,IRQ44只传递给前四个处理器(0-3)。 现在让我们把这个IRQ限制在CPU(4-7)。h]h}从上面一行可以看出,IRQ44只传递给前四个处理器(0-3)。 现在让我们把这个IRQ限制在CPU(4-7)。}(hj;hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK1hjThhubj*)}(hX[root@moon 44]# echo f0 > smp_affinity [root@moon 44]# cat smp_affinity 000000f0 [root@moon 44]# ping -f h PING hell (195.4.7.3): 56 data bytes .. --- hell ping statistics --- 2779 packets transmitted, 2777 packets received, 0% packet loss round-trip min/avg/max = 0.1/0.5/585.4 ms [root@moon 44]# cat /proc/interrupts | 'CPU\|44:' CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 44: 1068 1785 1785 1783 1784 1069 1070 1069 IO-APIC-level eth1h]hX[root@moon 44]# echo f0 > smp_affinity [root@moon 44]# cat smp_affinity 000000f0 [root@moon 44]# ping -f h PING hell (195.4.7.3): 56 data bytes .. --- hell ping statistics --- 2779 packets transmitted, 2777 packets received, 0% packet loss round-trip min/avg/max = 0.1/0.5/585.4 ms [root@moon 44]# cat /proc/interrupts | 'CPU\|44:' CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 44: 1068 1785 1785 1783 1784 1069 1070 1069 IO-APIC-level eth1}hjIsbah}(h]h ]h"]h$]h&]j9j:uh1j)hhhK6hjThhubh)}(hT这次IRQ44只传递给最后四个处理器。 即CPU0-3的计数器没有变化。h]hT这次IRQ44只传递给最后四个处理器。 即CPU0-3的计数器没有变化。}(hjWhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKChjThhubh)}(hD下面是一个将相同的irq(44)限制在cpus 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