linux-kernel - Re: [RESEND PATCH v5 0/5] Make cpuid <-> nodeid mapping persistent

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Date:	Thu, 3 Mar 2016 10:15:17 +0800
From:	Zhu Guihua <zhugh.fnst@...fujitsu.com>
To:	"Rafael J. Wysocki" <rafael@...nel.org>
CC:	<cl@...ux.com>, Tejun Heo <tj@...nel.org>,
	<mika.j.penttila@...il.com>, Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"H. Peter Anvin" <hpa@...or.com>, <yasu.isimatu@...il.com>,
	<isimatu.yasuaki@...fujitsu.com>, <kamezawa.hiroyu@...fujitsu.com>,
	<izumi.taku@...fujitsu.com>, <gongzhaogang@...pur.com>,
	Len Brown <len.brown@...el.com>, Len Brown <lenb@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, <chen.tang@...ystack.cn>,
	<x86@...nel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [RESEND PATCH v5 0/5] Make cpuid <-> nodeid mapping persistent

Hi,

On 03/03/2016 10:08 AM, Rafael J. Wysocki wrote:
> Hi,
>
> On Thu, Mar 3, 2016 at 2:42 AM, Zhu Guihua <zhugh.fnst@...fujitsu.com> wrote:
>> [Problem]
>>
>> cpuid <-> nodeid mapping is firstly established at boot time. And workqueue caches
>> the mapping in wq_numa_possible_cpumask in wq_numa_init() at boot time.
>>
>> When doing node online/offline, cpuid <-> nodeid mapping is established/destroyed,
>> which means, cpuid <-> nodeid mapping will change if node hotplug happens. But
>> workqueue does not update wq_numa_possible_cpumask.
>>
> Are there any changes in this version relative to the previous one?
No, there are no changes in this version.

Thanks,
Zhu

>
> Thanks,
> Rafael
>
>
> .
>