linux-kernel - Re: [PATCH v2 1/1] mm: only dispaly online cpus of the numa node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <8760bxdnyz.fsf@concordia.ellerman.id.au>
Date:   Tue, 03 Oct 2017 12:22:44 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Zhen Lei <thunder.leizhen@...wei.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-api <linux-api@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Hocko <mhocko@...e.com>, linux-mm <linux-mm@...ck.org>
Cc:     Tianhong Ding <dingtianhong@...wei.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Libin <huawei.libin@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Zhen Lei <thunder.leizhen@...wei.com>
Subject: Re: [PATCH v2 1/1] mm: only dispaly online cpus of the numa node

Zhen Lei <thunder.leizhen@...wei.com> writes:

> When I executed numactl -H(which read /sys/devices/system/node/nodeX/cpumap
> and display cpumask_of_node for each node), but I got different result on
> X86 and arm64. For each numa node, the former only displayed online CPUs,
> and the latter displayed all possible CPUs. Unfortunately, both Linux
> documentation and numactl manual have not described it clear.

FWIW powerpc happens to implement the x86 behaviour, online CPUs only.

cheers