linux-kernel - Re: [PATCH v8 1/6] MIPS: JZ4780: Introduce SMP support.

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Date:   Wed, 20 May 2020 20:32:01 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     Paul Cercueil <paul@...pouillou.net>,
        Zhou Yanjie <zhouyanjie@...yeetech.com>
CC:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, tsbogend@...ha.franken.de,
        paulburton@...nel.org, chenhc@...ote.com, tglx@...utronix.de,
        robh+dt@...nel.org, daniel.lezcano@...aro.org,
        keescook@...omium.org, krzk@...nel.org, hns@...delico.com,
        ebiederm@...ssion.com, dongsheng.qiu@...enic.com,
        yanfei.li@...enic.com, rick.tyliu@...enic.com,
        sernia.zhou@...mail.com, zhenwenjin@...il.com
Subject: Re: [PATCH v8 1/6] MIPS: JZ4780: Introduce SMP support.



于 2020年5月20日 GMT+08:00 下午7:33:22, Paul Cercueil <paul@...pouillou.net> 写到:
>> 
>> Yes, the current way is indeed a little problem, it will cause 
>> num_possible_cpus() == NR_CPUS, I will try to find a better way.
>
>You can do:
>
>for_each_of_cpu_node(cpu_node) {
>       cpu = of_cpu_node_to_id(cpu_node);
>       __cpu_number_map[cpu] = cpu;
>       __cpu_logical_map[cpu] = cpu;
>       set_cpu_possible(cpu, true);
>}
>

FYI: There is a abandoned DeviceTree[1], parser. You can take it.

I'm going to submit this topology clean-up for next release cycle
but you can pick it for now.

[...]

[1]: https://lkml.org/lkml/2020/4/11/1088
-- 
Jiaxun Yang