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To: yanteng si Cc: Yanteng Si , Jonathan Corbet , Alex Shi , Alex Shi , Huacai Chen , Jiaxun Yang , Harry Wei , linux-doc@vger.kernel.org, Puyu Wang Subject: Re: [PATCH 02/11] docs/zh_CN: add core-api irq irq-affinity.rst translation Message-ID: <20210407045907.GA20005@bobwxc.top> References: <20210406130210.2725075-1-siyanteng@loongson.cn> <20210406130210.2725075-3-siyanteng@loongson.cn> <20210406153505.GC15259@bobwxc.top> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CM-TRANSID: LCKnCgB36c8bPG1gsTFQAA--.47736S2 X-Coremail-Antispam: 1UD129KBjvJXoWxCF1xJrWUAFWrCF17try3twb_yoWrurW8pF 4UK3Zaka1xXrnrAr17K3WYvryjva4fWay7C3s7tas7Ar1v9anrZr45Kry5Gr1xGrW0va42 vF47JFWIyryYyFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUyGb7Iv0xC_Zr1lb4IE77IF4wAFc2x0x2IEx4CE42xK8VAvwI8I cIk0rVWrJVCq3wA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjx v20xvE14v26r1j6r1xM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2 z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAS0I0E0x vYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VCjz48v1sIEY20_ Cr1UJr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcVAKI48JM4IIrI8v6xkF7I0E8cxan2 IY04v7MxkIecxEwVAFwVW8XwCF04k20xvY0x0EwIxGrwCF04k20xvE74AGY7Cv6cx26F4U Jr1UMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7 xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xII jxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw2 0EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x02 67AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IUjaLvtUUUUU== X-Originating-IP: [120.238.248.129] X-CM-SenderInfo: pere453f6hztlloou0/ Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Wed, Apr 07, 2021 at 10:08:38AM +0800, yanteng si wrote: > Wu X.C. 于2021年4月6日周二 下午11:35写道： > > > > On Tue, Apr 06, 2021 at 09:02:01PM +0800, Yanteng Si wrote: > > > This patch translates Documentation/core-api/irq/irq-affinity.rst into Chinese. > > > > > > Signed-off-by: Yanteng Si > > > --- > > > .../zh_CN/core-api/irq/irq-affinity.rst | 73 +++++++++++++++++++ > > > 1 file changed, 73 insertions(+) > > > create mode 100644 Documentation/translations/zh_CN/core-api/irq/irq-affinity.rst > > > > > > diff --git a/Documentation/translations/zh_CN/core-api/irq/irq-affinity.rst b/Documentation/translations/zh_CN/core-api/irq/irq-affinity.rst > > > new file mode 100644 > > > index 000000000000..34aaf0d1ddc2 > > > --- /dev/null > > > +++ b/Documentation/translations/zh_CN/core-api/irq/irq-affinity.rst > > > @@ -0,0 +1,73 @@ > > > +.. include:: ../../disclaimer-zh_CN.rst > > > + > > > +:Original: :doc:`../../../../core-api/irq/irq-affinity` > > > +:Translator: Yanteng Si > > > + > > > +.. _cn_irq-affinity.rst: > > > + > > > + > > > +================ > > > +SMP IRQ 亲和性 > > > +================ > > > + > > > +变更记录: > > > + - 作者：最初由Ingo Molnar 开始撰写 > > > + - 后期更新维护： Max Krasnyansky > > > + > > > + > > > +/proc/irq/IRQ#/smp_affinity和/proc/irq/IRQ#/smp_affinity_list指明了给定IRQ源 > > > +允许哪些目标CPU使用。它是被允许的CPU的位掩码(smp_affinity)或cpu列表(smp_affinity_list)。 > > > +它不允许关闭所有的CPU，如果一个IRQ控制器不支持IRQ亲和性，那么所有cpu的默认值将不会发生 > > > > 关闭 -> 禁止？ > emmmmm…… > I looked up the English-Chinese dictionary：turn off -> 关闭，关掉电器、水龙头…… > maybe：不允许关闭 -> 禁止关闭？ 我是想着是不是要跟前面的“允许”目标CPU使用对应 Both ok, choose the one you pefer Thanks! > > > > > +变化。 > > > + > > > +/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0xffffffffff。 > > > > 0xffffffff > > eight f > > > OK! > > > + > > > +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) > > a empty line > OK! > > > +:: > > > + > > > + [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 > > > + > > > +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)。 > > > + > > > +:: > > > + > > > + [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 > > > + > > > +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。 > > > + > > > +下面是一个将相同的irq(44)限制在cpus 1024到1031的例子：。 > > ^^^ > > ： -> :: > > > OK! > > > + > > > + [root@moon 44]# echo 1024-1031 > smp_affinity_list > > > + [root@moon 44]# cat smp_affinity_list > > > + 1024-1031 > > > + > > > +需要注意的是，如果要用位掩码来做这件事，就需要32个为0的位掩码来追踪其相关的一个。 > > > -- > > > 2.27.0 > > > > Thanks! > > Yanteng