From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id 40BDE6B0253 for ; Mon, 2 Oct 2017 17:54:50 -0400 (EDT) Received: by mail-wr0-f199.google.com with SMTP id z1so6873976wre.6 for ; Mon, 02 Oct 2017 14:54:50 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id 98si4278301wrk.281.2017.10.02.14.54.48 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Oct 2017 14:54:49 -0700 (PDT) Date: Mon, 2 Oct 2017 14:54:46 -0700 From: Andrew Morton Subject: Re: [PATCH v2 1/1] mm: only dispaly online cpus of the numa node Message-Id: <20171002145446.eade11c1f28d55e5f67aa4d0@linux-foundation.org> In-Reply-To: <20171002103806.GB3823@arm.com> References: <1506678805-15392-1-git-send-email-thunder.leizhen@huawei.com> <1506678805-15392-2-git-send-email-thunder.leizhen@huawei.com> <20171002103806.GB3823@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Will Deacon Cc: Zhen Lei , Catalin Marinas , linux-kernel , linux-api , Greg Kroah-Hartman , Michal Hocko , linux-mm , Tianhong Ding , Hanjun Guo , Libin , Kefeng Wang On Mon, 2 Oct 2017 11:38:07 +0100 Will Deacon wrote: > > 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. > > > > I sent a mail to ask for help, and Michal Hocko replied > > that he preferred to print online cpus because it doesn't really make much > > sense to bind anything on offline nodes. > > > > Signed-off-by: Zhen Lei > > Acked-by: Michal Hocko > > --- > > drivers/base/node.c | 12 ++++++++++-- > > 1 file changed, 10 insertions(+), 2 deletions(-) > > Which tree is this intended to go through? I'm happy to take it via arm64, > but I don't want to tread on anybody's toes in linux-next and it looks like > there are already queued changes to this file via Andrew's tree. I grabbed it. I suppose there's some small risk of userspace breakage so I suggest it be a 4.15-rc1 thing? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org