From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@suse.de>,
Shaohui Zheng <shaohui.zheng@intel.com>,
Paul Mundt <lethal@linux-sh.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <ak@linux.intel.com>, Yinghai Lu <yinghai@kernel.org>,
Haicheng Li <haicheng.li@intel.com>,
Randy Dunlap <randy.dunlap@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [patch 1/2] x86: add numa=possible command line option
Date: Sun, 21 Nov 2010 22:26:15 +0800 [thread overview]
Message-ID: <20101121142615.GI9099@hack> (raw)
In-Reply-To: <alpine.DEB.2.00.1011201826140.12889@chino.kir.corp.google.com>
Hi, David
On Sat, Nov 20, 2010 at 06:28:31PM -0800, David Rientjes wrote:
>Adds a numa=possible=<N> command line option to set an additional N nodes
>as being possible for memory hotplug. This set of possible nodes
>controls nr_node_ids and the sizes of several dynamically allocated node
>arrays.
>
>This allows memory hotplug to create new nodes for newly added memory
>rather than binding it to existing nodes.
>
>The first use-case for this will be node hotplug emulation which will use
>these possible nodes to create new nodes to test the memory hotplug
>callbacks and surrounding memory hotplug code.
>
I am not sure how much value of making this dynamic,
for CPU, we do this at compile time, i.e. NR_CPUS,
so how about NR_NODES?
Also, numa=possible= is not as clear as numa=max=, for me at least.
Thanks.
WARNING: multiple messages have this Message-ID (diff)
From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@suse.de>,
Shaohui Zheng <shaohui.zheng@intel.com>,
Paul Mundt <lethal@linux-sh.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <ak@linux.intel.com>, Yinghai Lu <yinghai@kernel.org>,
Haicheng Li <haicheng.li@intel.com>,
Randy Dunlap <randy.dunlap@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [patch 1/2] x86: add numa=possible command line option
Date: Sun, 21 Nov 2010 22:26:15 +0800 [thread overview]
Message-ID: <20101121142615.GI9099@hack> (raw)
In-Reply-To: <alpine.DEB.2.00.1011201826140.12889@chino.kir.corp.google.com>
Hi, David
On Sat, Nov 20, 2010 at 06:28:31PM -0800, David Rientjes wrote:
>Adds a numa=possible=<N> command line option to set an additional N nodes
>as being possible for memory hotplug. This set of possible nodes
>controls nr_node_ids and the sizes of several dynamically allocated node
>arrays.
>
>This allows memory hotplug to create new nodes for newly added memory
>rather than binding it to existing nodes.
>
>The first use-case for this will be node hotplug emulation which will use
>these possible nodes to create new nodes to test the memory hotplug
>callbacks and surrounding memory hotplug code.
>
I am not sure how much value of making this dynamic,
for CPU, we do this at compile time, i.e. NR_CPUS,
so how about NR_NODES?
Also, numa=possible= is not as clear as numa=max=, for me at least.
Thanks.
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next prev parent reply other threads:[~2010-11-21 14:23 UTC|newest]
Thread overview: 143+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-17 2:07 [0/8,v3] NUMA Hotplug Emulator - Introduction & Feedbacks shaohui.zheng
2010-11-17 2:07 ` shaohui.zheng
2010-11-17 2:08 ` [1/8,v3] NUMA Hotplug Emulator: add function to hide memory region via e820 table shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 8:16 ` David Rientjes
2010-11-17 8:16 ` David Rientjes
2010-11-18 9:20 ` Shaohui Zheng
2010-11-18 9:20 ` Shaohui Zheng
2010-11-18 21:16 ` David Rientjes
2010-11-18 21:16 ` David Rientjes
2010-11-19 0:12 ` Shaohui Zheng
2010-11-19 0:12 ` Shaohui Zheng
2010-11-21 0:45 ` David Rientjes
2010-11-21 0:45 ` David Rientjes
2010-11-21 14:00 ` Américo Wang
2010-11-21 14:00 ` Américo Wang
2010-11-21 21:33 ` David Rientjes
2010-11-21 21:33 ` David Rientjes
2010-11-17 2:08 ` [2/8,v3] NUMA Hotplug Emulator: infrastructure of NUMA hotplug emulation shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 8:16 ` David Rientjes
2010-11-17 8:16 ` David Rientjes
2010-11-17 7:51 ` Shaohui Zheng
2010-11-17 7:51 ` Shaohui Zheng
2010-11-17 21:10 ` David Rientjes
2010-11-17 21:10 ` David Rientjes
2010-11-18 4:14 ` Shaohui Zheng
2010-11-18 4:14 ` Shaohui Zheng
2010-11-18 6:27 ` Paul Mundt
2010-11-18 6:27 ` Paul Mundt
2010-11-18 5:27 ` Shaohui Zheng
2010-11-18 5:27 ` Shaohui Zheng
2010-11-18 21:24 ` David Rientjes
2010-11-18 21:24 ` David Rientjes
2010-11-19 0:32 ` Shaohui Zheng
2010-11-19 0:32 ` Shaohui Zheng
2010-11-21 0:48 ` David Rientjes
2010-11-21 0:48 ` David Rientjes
2010-11-21 2:28 ` [patch 1/2] x86: add numa=possible command line option David Rientjes
2010-11-21 2:28 ` David Rientjes
2010-11-21 2:28 ` [patch 2/2] mm: add node hotplug emulation David Rientjes
2010-11-21 2:28 ` David Rientjes
2010-11-21 17:34 ` Greg KH
2010-11-21 17:34 ` Greg KH
2010-11-21 21:48 ` David Rientjes
2010-11-21 21:48 ` David Rientjes
2010-11-21 23:08 ` [patch 2/2 v2] " David Rientjes
2010-11-21 23:08 ` David Rientjes
2010-11-22 0:56 ` Greg KH
2010-11-22 0:56 ` Greg KH
2010-11-28 1:52 ` David Rientjes
2010-11-28 1:52 ` David Rientjes
2010-11-28 5:17 ` Greg KH
2010-11-28 5:17 ` Greg KH
2010-11-30 0:04 ` David Rientjes
2010-11-30 0:04 ` David Rientjes
2010-11-21 14:26 ` Américo Wang [this message]
2010-11-21 14:26 ` [patch 1/2] x86: add numa=possible command line option Américo Wang
2010-11-21 21:46 ` David Rientjes
2010-11-21 21:46 ` David Rientjes
2010-11-22 15:43 ` Américo Wang
2010-11-22 15:43 ` Américo Wang
2010-11-21 15:14 ` [2/8,v3] NUMA Hotplug Emulator: infrastructure of NUMA hotplug emulation Li, Haicheng
2010-11-21 15:14 ` Li, Haicheng
2010-11-21 21:42 ` David Rientjes
2010-11-21 21:42 ` David Rientjes
2010-11-18 21:19 ` David Rientjes
2010-11-18 21:19 ` David Rientjes
2010-11-17 2:08 ` [3/8,v3] NUMA Hotplug Emulator: Userland interface to hotplug-add fake offlined nodes shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 8:16 ` David Rientjes
2010-11-17 8:16 ` David Rientjes
2010-11-17 2:08 ` [4/8,v3] NUMA Hotplug Emulator: Abstract cpu register functions shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 2:08 ` [5/8,v3] NUMA Hotplug Emulator: support cpu probe/release in x86 shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-21 14:45 ` Américo Wang
2010-11-21 14:45 ` Américo Wang
2010-11-22 0:01 ` Shaohui Zheng
2010-11-22 0:01 ` Shaohui Zheng
2010-11-22 15:51 ` Américo Wang
2010-11-22 15:51 ` Américo Wang
2010-11-22 23:29 ` Shaohui Zheng
2010-11-22 23:29 ` Shaohui Zheng
2010-11-17 2:08 ` [6/8,v3] NUMA Hotplug Emulator: Fake CPU socket with logical CPU on x86 shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 2:08 ` [7/8,v3] NUMA Hotplug Emulator: extend memory probe interface to support NUMA shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 18:50 ` Dave Hansen
2010-11-17 18:50 ` Dave Hansen
2010-11-17 21:18 ` David Rientjes
2010-11-17 21:18 ` David Rientjes
2010-11-17 21:55 ` Dave Hansen
2010-11-17 21:55 ` Dave Hansen
2010-11-17 22:44 ` David Rientjes
2010-11-17 22:44 ` David Rientjes
2010-11-17 23:00 ` Dave Hansen
2010-11-17 23:00 ` Dave Hansen
2010-11-17 23:17 ` David Rientjes
2010-11-17 23:17 ` David Rientjes
2010-11-18 16:59 ` Aaron Durbin
2010-11-18 16:59 ` Aaron Durbin
2010-11-18 4:48 ` Shaohui Zheng
2010-11-18 4:48 ` Shaohui Zheng
2010-11-18 6:24 ` Paul Mundt
2010-11-18 6:24 ` Paul Mundt
2010-11-18 21:28 ` David Rientjes
2010-11-18 21:28 ` David Rientjes
2010-11-18 21:31 ` David Rientjes
2010-11-18 21:31 ` David Rientjes
2010-11-18 4:36 ` Shaohui Zheng
2010-11-18 4:36 ` Shaohui Zheng
2010-11-19 7:51 ` Shaohui Zheng
2010-11-19 16:36 ` Dave Hansen
2010-11-19 16:36 ` Dave Hansen
2010-11-17 2:08 ` [8/8,v3] NUMA Hotplug Emulator: documentation shaohui.zheng
2010-11-17 2:08 ` shaohui.zheng
2010-11-17 23:06 ` Randy Dunlap
2010-11-17 23:06 ` Randy Dunlap
2010-11-18 2:31 ` Shaohui Zheng
2010-11-18 2:31 ` Shaohui Zheng
2010-11-21 15:03 ` Américo Wang
2010-11-21 15:03 ` Américo Wang
2010-11-21 15:16 ` Li, Haicheng
2010-11-21 15:16 ` Li, Haicheng
2010-11-21 23:33 ` Shaohui Zheng
2010-11-21 23:33 ` Shaohui Zheng
2010-11-22 16:04 ` Américo Wang
2010-11-22 16:04 ` Américo Wang
2010-11-22 23:23 ` Shaohui Zheng
2010-11-22 23:23 ` Shaohui Zheng
2010-11-17 5:22 ` [0/8,v3] NUMA Hotplug Emulator - Introduction & Feedbacks Paul Mundt
2010-11-17 5:22 ` Paul Mundt
2010-11-19 5:54 ` Shaohui Zheng
2010-11-19 5:54 ` Shaohui Zheng
2010-11-17 9:26 ` Yinghai Lu
2010-11-17 9:26 ` Yinghai Lu
2010-11-18 2:03 ` Shaohui Zheng
2010-11-18 2:03 ` Shaohui Zheng
[not found] <A24AE1FFE7AEC5489F83450EE98351BF28723FC48C@shsmsx502.ccr.corp.intel.com>
2010-11-22 2:24 ` [patch 1/2] x86: add numa=possible command line option Shaohui Zheng
2010-11-22 2:24 ` Shaohui Zheng
2010-11-28 2:03 ` David Rientjes
2010-11-28 2:03 ` David Rientjes
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