From: Yanfei Zhang <zhangyanfei.yes@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Tejun Heo <tj@kernel.org>, "Rafael J . Wysocki" <rjw@sisk.pl>,
"lenb@kernel.org" <lenb@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"mingo@elte.hu" <mingo@elte.hu>, "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Toshi Kani <toshi.kani@hp.com>,
Wanpeng Li <liwanp@linux.vnet.ibm.com>,
Thomas Renninger <trenn@suse.de>, Yinghai Lu <yinghai@kernel.org>,
Jiang Liu <jiang.liu@huawei.com>,
Wen Congyang <wency@cn.fujitsu.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
"isimatu.yasuaki@jp.fujitsu.com" <isimatu.yasuaki@jp.fujitsu.com>,
"izumi.taku@jp.fujitsu.com" <izumi.taku@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
"mina86@mina86.com" <mina86@mina86.com>,
"gong.chen@linux.intel.com" <gong.chen@linux.intel.com>,
"vasilis.liaskovitis@profitbricks.com"
<vasilis.liaskovitis@profitbricks.com>,
"lwoodman@redhat.com" <lwoodman@redhat.com>,
Rik van Riel <riel@redhat.com>,
"jweiner@redhat.com" <jweiner@redhat.com>,
"prarit@redhat.com" <prarit@redhat.com>,
"x86@kernel.org" <x86@kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"imtangchen@gmail.com" <imtangchen@gmail.com>,
Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Subject: Re: [PATCH v5 6/6] mem-hotplug: Introduce movablenode boot option
Date: Fri, 27 Sep 2013 16:08:06 +0800 [thread overview]
Message-ID: <CANBD6kGStR-4dJRjoveNv7CtUu04gpsZZhBd=B6_=gMqrDZX6w@mail.gmail.com> (raw)
In-Reply-To: <20130927062633.GB6726@gmail.com>
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hello Ingo,
在 2013年9月27日星期五，Ingo Molnar 写道：
>
> * Zhang Yanfei <zhangyanfei.yes@gmail.com <javascript:;>> wrote:
>
> > OK. Trying below:
> >
> > movablenode [KNL,X86] This option enables the kernel to arrange
> > hotpluggable memory into ZONE_MOVABLE zone. If memory
> > in a node is all hotpluggable, the option may make
> > the whole node has only one ZONE_MOVABLE zone, so that
> > the whole node can be hot-removed after system is up.
> > Note that this option may cause NUMA performance down.
>
> That paragraph doesn't really parse in several places ...
Sorry…could you point out the places a bit?
>
> Also, more importantly, please explain why this needs to be a boot option.
> In terms of user friendliness boot options are at the bottom of the list,
> and boot options also don't really help feature tests.
>
> Presumably the feature is safe and has no costs, and hence could be added
> as a regular .config option, with a boot option only as an additional
> configurability option?
Yeah, the kernel already has config MOVABLE_NODE, which is the config
enabing this feature, and we introduce this boot option to expand the
configurability.
Thanks.
Zhang
>
> Thanks,
>
> Ingo
>
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next prev parent reply other threads:[~2013-09-27 8:08 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-24 18:23 [PATCH v5 0/6] x86, memblock: Allocate memory near kernel image before SRAT parsed Zhang Yanfei
2013-09-24 18:25 ` [PATCH v5 1/6] memblock: Factor out of top-down allocation Zhang Yanfei
2013-09-27 22:23 ` Toshi Kani
2013-09-24 18:27 ` [PATCH v5 2/6] memblock: Introduce bottom-up allocation mode Zhang Yanfei
2013-09-26 14:45 ` Tejun Heo
2013-09-26 15:37 ` Zhang Yanfei
2013-09-26 15:50 ` Tejun Heo
2013-09-26 15:54 ` Zhang Yanfei
2013-09-26 16:51 ` Zhang Yanfei
2013-09-27 22:29 ` Toshi Kani
2013-09-24 18:29 ` [PATCH v5 3/6] x86/mm: Factor out of top-down direct mapping setup Zhang Yanfei
2013-09-26 14:46 ` Tejun Heo
2013-09-26 15:39 ` Zhang Yanfei
2013-09-26 16:56 ` Zhang Yanfei
2013-09-27 22:43 ` Toshi Kani
2013-09-24 18:30 ` [PATCH v5 4/6] x86/mem-hotplug: Support initialize page tables in bottom-up Zhang Yanfei
2013-09-26 14:48 ` Tejun Heo
2013-09-26 15:43 ` Zhang Yanfei
2013-09-26 15:48 ` Tejun Heo
2013-09-26 16:03 ` Zhang Yanfei
2013-09-26 16:08 ` Tejun Heo
2013-09-26 17:00 ` Zhang Yanfei
2013-09-26 22:52 ` Andrew Morton
2013-09-26 22:57 ` H. Peter Anvin
2013-09-24 18:34 ` [PATCH v5 5/6] x86, acpi, crash, kdump: Do reserve_crashkernel() after SRAT is parsed Zhang Yanfei
2013-09-26 14:49 ` Tejun Heo
2013-09-26 15:46 ` Zhang Yanfei
2013-09-27 23:14 ` Toshi Kani
2013-09-24 18:35 ` [PATCH v5 6/6] mem-hotplug: Introduce movablenode boot option Zhang Yanfei
2013-09-26 14:53 ` Tejun Heo
2013-09-26 16:42 ` Zhang Yanfei
2013-09-27 6:26 ` Ingo Molnar
2013-09-27 8:08 ` Yanfei Zhang [this message]
2013-09-27 11:05 ` Ingo Molnar
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