Re: [PATCH 02/11] docs/zh_CN: add core-api irq irq-affinity.rst translation

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On Wed, Apr 07, 2021 at 02:59:22PM +0800, yanteng si wrote:
> Wu X.C. <bobwxc@xxxxxxxx> 于2021年4月7日周三 下午12:59写道:
> >
> > On Wed, Apr 07, 2021 at 10:08:38AM +0800, yanteng si wrote:
> > > Wu X.C. <bobwxc@xxxxxxxx> 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 <siyanteng@xxxxxxxxxxx>
> > > > > ---
> > > > >  .../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 <siyanteng@xxxxxxxxxxx>
> > > > > +
> > > > > +.. _cn_irq-affinity.rst:
> > > > > +
> > > > > +
> > > > > +================
> > > > > +SMP IRQ 亲和性
> > > > > +================
> > > > > +
> > > > > +变更记录:
> > > > > +     - 作者:最初由Ingo Molnar <mingo@xxxxxxxxxx>开始撰写
> > > > > +     - 后期更新维护: Max Krasnyansky <maxk@xxxxxxxxxxxx>
> > > > > +
> > > > > +
> > > > > +/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!
> >
> emmmmm……
> The previous translation was a bit obscure and I did some optimization:
> 
> /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(既关联到所有CPU)。

Look good to me.

Wu X.C.

> 
> 
> > > >
> > > > > +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
> >




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