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From: Shaohui Zheng <shaohui.zheng@intel.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg KH <gregkh@suse.de>,
	akpm@linux-foundation.org, linux-mm@kvack.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, Andi Kleen <ak@linux.intel.com>,
	Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	linux-kernel@vger.kernel.org, haicheng.li@linux.intel.com,
	shaohui.zheng@linux.intel.com
Subject: Re: [RFC, 6/7] NUMA hotplug emulator
Date: Fri, 14 May 2010 10:08:11 +0800	[thread overview]
Message-ID: <20100514020811.GD4381@shaohui> (raw)
In-Reply-To: <20100514020526.GB7678@localhost>

On Fri, May 14, 2010 at 10:05:26AM +0800, Wu Fengguang wrote:
> On Fri, May 14, 2010 at 09:49:02AM +0800, Zheng, Shaohui wrote:
> > On Thu, May 13, 2010 at 09:56:03AM -0700, Greg KH wrote:
> > > On Thu, May 13, 2010 at 08:00:16PM +0800, Shaohui Zheng wrote:
> > > > hotplug emulator:extend memory probe interface to support NUMA
> > > > 
> > > > Extend memory probe interface to support an extra paramter nid,
> > > > the reserved memory can be added into this node if node exists.
> > > > 
> > > > Add a memory section(128M) to node 3(boots with mem=1024m)
> > > > 
> > > > 	echo 0x40000000,3 > memory/probe
> > > > 
> > > > And more we make it friendly, it is possible to add memory to do
> > > > 
> > > > 	echo 3g > memory/probe
> > > > 	echo 1024m,3 > memory/probe
> > > > 
> > > > It maintains backwards compatibility.
> > > 
> > > Again, please document this.
> > > 
> > > thanks,
> > > 
> > > greg k-h
> > 
> > okay
> 
> Shaohui, it's useless to document a wrong interface.
> Better to fix the interface _first_, then document becomes meaningful.
Fenggunag,
	greg reminds me to add the docment into Documentation/ABI/, We miss it in
the RFC. Currently, the interface format is not finalized, when we decide the
final interface, the last step is documenting it in.
> 
> Thanks,
> Fengguang

-- 
Thanks & Regards,
Shaohui


WARNING: multiple messages have this Message-ID (diff)
From: Shaohui Zheng <shaohui.zheng@intel.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg KH <gregkh@suse.de>,
	akpm@linux-foundation.org, linux-mm@kvack.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, Andi Kleen <ak@linux.intel.com>,
	Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	linux-kernel@vger.kernel.org, haicheng.li@linux.intel.com,
	shaohui.zheng@linux.intel.com
Subject: Re: [RFC, 6/7] NUMA hotplug emulator
Date: Fri, 14 May 2010 10:08:11 +0800	[thread overview]
Message-ID: <20100514020811.GD4381@shaohui> (raw)
In-Reply-To: <20100514020526.GB7678@localhost>

On Fri, May 14, 2010 at 10:05:26AM +0800, Wu Fengguang wrote:
> On Fri, May 14, 2010 at 09:49:02AM +0800, Zheng, Shaohui wrote:
> > On Thu, May 13, 2010 at 09:56:03AM -0700, Greg KH wrote:
> > > On Thu, May 13, 2010 at 08:00:16PM +0800, Shaohui Zheng wrote:
> > > > hotplug emulator:extend memory probe interface to support NUMA
> > > > 
> > > > Extend memory probe interface to support an extra paramter nid,
> > > > the reserved memory can be added into this node if node exists.
> > > > 
> > > > Add a memory section(128M) to node 3(boots with mem=1024m)
> > > > 
> > > > 	echo 0x40000000,3 > memory/probe
> > > > 
> > > > And more we make it friendly, it is possible to add memory to do
> > > > 
> > > > 	echo 3g > memory/probe
> > > > 	echo 1024m,3 > memory/probe
> > > > 
> > > > It maintains backwards compatibility.
> > > 
> > > Again, please document this.
> > > 
> > > thanks,
> > > 
> > > greg k-h
> > 
> > okay
> 
> Shaohui, it's useless to document a wrong interface.
> Better to fix the interface _first_, then document becomes meaningful.
Fenggunag,
	greg reminds me to add the docment into Documentation/ABI/, We miss it in
the RFC. Currently, the interface format is not finalized, when we decide the
final interface, the last step is documenting it in.
> 
> Thanks,
> Fengguang

-- 
Thanks & Regards,
Shaohui

--
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  reply	other threads:[~2010-05-14  2:12 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-13 12:00 [RFC, 6/7] NUMA hotplug emulator Shaohui Zheng
2010-05-13 12:00 ` Shaohui Zheng
2010-05-13 16:56 ` Greg KH
2010-05-13 16:56   ` Greg KH
2010-05-13 18:02   ` Dave Hansen
2010-05-13 18:02     ` Dave Hansen
2010-05-13 18:15     ` Greg KH
2010-05-13 18:15       ` Greg KH
2010-05-13 18:49       ` Dave Hansen
2010-05-13 18:49         ` Dave Hansen
2010-05-13 18:58         ` Greg KH
2010-05-13 18:58           ` Greg KH
2010-05-13 19:16           ` Dave Hansen
2010-05-13 19:16             ` Dave Hansen
2010-05-13 19:21             ` Greg KH
2010-05-13 19:21               ` Greg KH
2010-05-18  5:41         ` Shaohui Zheng
2010-05-18  5:41           ` Shaohui Zheng
2010-05-18  7:27           ` Dave Hansen
2010-05-18  7:27             ` Dave Hansen
2010-05-18  7:56             ` Shaohui Zheng
2010-05-18  7:56               ` Shaohui Zheng
2010-05-18  8:55             ` Andi Kleen
2010-05-18  8:55               ` Andi Kleen
2010-05-18 15:46               ` Dave Hansen
2010-05-18 15:46                 ` Dave Hansen
2010-05-18  7:44           ` Nicholas A. Bellinger
2010-05-18  7:44             ` Nicholas A. Bellinger
2010-05-18  7:44           ` Paul Mundt
2010-05-18  7:44             ` Paul Mundt
2010-05-18  8:08             ` Shaohui Zheng
2010-05-18  8:08               ` Shaohui Zheng
2010-05-14  1:49   ` Shaohui Zheng
2010-05-14  1:49     ` Shaohui Zheng
2010-05-14  2:05     ` Wu Fengguang
2010-05-14  2:05       ` Wu Fengguang
2010-05-14  2:08       ` Shaohui Zheng [this message]
2010-05-14  2:08         ` Shaohui Zheng
2010-05-21 10:11 ` Ankita Garg
2010-05-21 10:11   ` Ankita Garg
2010-05-24  1:26   ` Shaohui Zheng
2010-05-24  1:26     ` Shaohui Zheng

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