From: Tejun Heo <tj@kernel.org>
To: Tang Chen <tangchen@cn.fujitsu.com>
Cc: tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org,
jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com,
isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
mgorman@suse.de, minchan@kernel.org, mina86@mina86.com,
gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com,
lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com,
prarit@redhat.com, zhangyanfei@cn.fujitsu.com,
yanghy@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 11/21] x86: get pg_data_t's memory from other node
Date: Wed, 24 Jul 2013 12:03:42 -0400 [thread overview]
Message-ID: <20130724160342.GC20377@mtj.dyndns.org> (raw)
In-Reply-To: <51EF4F95.1050308@cn.fujitsu.com>
Hello, Tang.
On Wed, Jul 24, 2013 at 11:52:53AM +0800, Tang Chen wrote:
> The node data should be on local, I agree with that. I'm not saying I
> won't do it. Just for now, it will be complicated to fix memory hot-remove
> path. So I think pushing this patch for now, and do the local node things
> in the next step.
I see. As long as it's clearly noted in the patch description and as
comment && the behavior is off unless explicitly enabled, it should be
fine for now, I think. As currently implemented, the users of memory
hotplug would have to pay pretty heavy price in terms of memory
locality overhead in general and it could be that the ones missed here
might not make noticeable difference anyway.
Thanks.
--
tejun
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WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Tang Chen <tangchen@cn.fujitsu.com>
Cc: tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org,
jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com,
isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
mgorman@suse.de, minchan@kernel.org, mina86@mina86.com,
gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com,
lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com,
prarit@redhat.com, zhangyanfei@cn.fujitsu.com,
yanghy@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 11/21] x86: get pg_data_t's memory from other node
Date: Wed, 24 Jul 2013 12:03:42 -0400 [thread overview]
Message-ID: <20130724160342.GC20377@mtj.dyndns.org> (raw)
In-Reply-To: <51EF4F95.1050308@cn.fujitsu.com>
Hello, Tang.
On Wed, Jul 24, 2013 at 11:52:53AM +0800, Tang Chen wrote:
> The node data should be on local, I agree with that. I'm not saying I
> won't do it. Just for now, it will be complicated to fix memory hot-remove
> path. So I think pushing this patch for now, and do the local node things
> in the next step.
I see. As long as it's clearly noted in the patch description and as
comment && the behavior is off unless explicitly enabled, it should be
fine for now, I think. As currently implemented, the users of memory
hotplug would have to pay pretty heavy price in terms of memory
locality overhead in general and it could be that the ones missed here
might not make noticeable difference anyway.
Thanks.
--
tejun
next prev parent reply other threads:[~2013-07-24 16:03 UTC|newest]
Thread overview: 152+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-19 7:59 [PATCH 00/21] Arrange hotpluggable memory as ZONE_MOVABLE Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-19 7:59 ` [PATCH 01/21] acpi: Print Hot-Pluggable Field in SRAT Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 18:48 ` Tejun Heo
2013-07-23 18:48 ` Tejun Heo
2013-07-23 19:15 ` Joe Perches
2013-07-23 19:15 ` Joe Perches
2013-07-23 19:20 ` Tejun Heo
2013-07-23 19:20 ` Tejun Heo
2013-07-23 19:26 ` Joe Perches
2013-07-23 19:26 ` Joe Perches
2013-07-24 1:46 ` Tang Chen
2013-07-24 1:46 ` Tang Chen
2013-07-19 7:59 ` [PATCH 02/21] memblock, numa: Introduce flag into memblock Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 19:09 ` Tejun Heo
2013-07-23 19:09 ` Tejun Heo
2013-07-24 2:53 ` Tang Chen
2013-07-24 2:53 ` Tang Chen
2013-07-24 15:54 ` Tejun Heo
2013-07-24 15:54 ` Tejun Heo
2013-07-25 6:42 ` Tang Chen
2013-07-25 6:42 ` Tang Chen
2013-07-19 7:59 ` [PATCH 03/21] x86, acpi, numa, mem-hotplug: Introduce MEMBLK_HOTPLUGGABLE to reserve hotpluggable memory Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 19:19 ` Tejun Heo
2013-07-23 19:19 ` Tejun Heo
2013-07-24 2:55 ` Tang Chen
2013-07-24 2:55 ` Tang Chen
2013-07-19 7:59 ` [PATCH 04/21] acpi: Remove "continue" in macro INVALID_TABLE() Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 19:15 ` Tejun Heo
2013-07-23 19:15 ` Tejun Heo
2013-07-19 7:59 ` [PATCH 05/21] acpi: Introduce acpi_invalid_table() to check if a table is invalid Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-19 7:59 ` [PATCH 06/21] x86, acpi: Split acpi_boot_table_init() into two parts Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-19 7:59 ` [PATCH 07/21] x86, acpi: Initialize ACPI root table list earlier Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-19 7:59 ` [PATCH 08/21] x86, acpi: Also initialize signature and length when parsing root table Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 19:45 ` Tejun Heo
2013-07-23 19:45 ` Tejun Heo
2013-07-25 6:50 ` Tang Chen
2013-07-25 6:50 ` Tang Chen
2013-07-19 7:59 ` [PATCH 09/21] x86: Make get_ramdisk_{image|size}() global Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 19:56 ` Tejun Heo
2013-07-23 19:56 ` Tejun Heo
2013-07-24 3:12 ` Tang Chen
2013-07-24 3:12 ` Tang Chen
2013-07-19 7:59 ` [PATCH 10/21] earlycpio.c: Fix the confusing comment of find_cpio_data() Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:02 ` Tejun Heo
2013-07-23 20:02 ` Tejun Heo
2013-07-24 3:20 ` Tang Chen
2013-07-24 3:20 ` Tang Chen
2013-07-19 7:59 ` [PATCH 11/21] x86: get pg_data_t's memory from other node Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:09 ` Tejun Heo
2013-07-23 20:09 ` Tejun Heo
2013-07-24 3:52 ` Tang Chen
2013-07-24 3:52 ` Tang Chen
2013-07-24 16:03 ` Tejun Heo [this message]
2013-07-24 16:03 ` Tejun Heo
2013-07-19 7:59 ` [PATCH 12/21] x86, acpi: Try to find if SRAT is overrided earlier Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:27 ` Tejun Heo
2013-07-23 20:27 ` Tejun Heo
2013-07-24 6:57 ` Tang Chen
2013-07-24 6:57 ` Tang Chen
2013-07-19 7:59 ` [PATCH 13/21] x86, acpi: Try to find SRAT in firmware earlier Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:49 ` Tejun Heo
2013-07-23 20:49 ` Tejun Heo
2013-07-24 10:12 ` Tang Chen
2013-07-24 10:12 ` Tang Chen
2013-07-24 15:55 ` Tejun Heo
2013-07-24 15:55 ` Tejun Heo
2013-07-23 23:26 ` Cody P Schafer
2013-07-23 23:26 ` Cody P Schafer
2013-07-24 10:16 ` Tang Chen
2013-07-24 10:16 ` Tang Chen
2013-07-19 7:59 ` [PATCH 14/21] x86, acpi, numa: Reserve hotpluggable memory at early time Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:55 ` Tejun Heo
2013-07-23 20:55 ` Tejun Heo
2013-07-23 21:32 ` Tejun Heo
2013-07-23 21:32 ` Tejun Heo
2013-07-25 2:13 ` Tang Chen
2013-07-25 2:13 ` Tang Chen
2013-07-25 15:17 ` Tejun Heo
2013-07-25 15:17 ` Tejun Heo
2013-07-26 3:45 ` Tang Chen
2013-07-26 3:45 ` Tang Chen
2013-07-26 10:26 ` Tejun Heo
2013-07-26 10:26 ` Tejun Heo
2013-07-26 10:27 ` Tejun Heo
2013-07-26 10:27 ` Tejun Heo
2013-07-29 2:12 ` Tang Chen
2013-07-29 2:12 ` Tang Chen
2013-07-29 17:10 ` Tejun Heo
2013-07-29 17:10 ` Tejun Heo
2013-07-19 7:59 ` [PATCH 15/21] x86, acpi, numa: Don't reserve memory on nodes the kernel resides in Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 20:59 ` Tejun Heo
2013-07-23 20:59 ` Tejun Heo
2013-07-25 2:34 ` Tang Chen
2013-07-25 2:34 ` Tang Chen
2013-07-19 7:59 ` [PATCH 16/21] x86, memblock, mem-hotplug: Free hotpluggable memory reserved by memblock Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 21:00 ` Tejun Heo
2013-07-23 21:00 ` Tejun Heo
2013-07-25 2:35 ` Tang Chen
2013-07-25 2:35 ` Tang Chen
2013-07-19 7:59 ` [PATCH 17/21] page_alloc, mem-hotplug: Improve movablecore to {en|dis}able using SRAT Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 21:04 ` Tejun Heo
2013-07-23 21:04 ` Tejun Heo
2013-07-23 21:11 ` Tejun Heo
2013-07-23 21:11 ` Tejun Heo
2013-07-25 3:50 ` Tang Chen
2013-07-25 3:50 ` Tang Chen
2013-07-25 15:09 ` Tejun Heo
2013-07-25 15:09 ` Tejun Heo
2013-07-26 3:58 ` Tang Chen
2013-07-26 3:58 ` Tang Chen
2013-07-19 7:59 ` [PATCH 18/21] x86, numa: Synchronize nid info in memblock.reserve with numa_meminfo Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 21:25 ` Tejun Heo
2013-07-23 21:25 ` Tejun Heo
2013-07-25 4:09 ` Tang Chen
2013-07-25 4:09 ` Tang Chen
2013-07-25 15:05 ` Tejun Heo
2013-07-25 15:05 ` Tejun Heo
2013-07-26 4:00 ` Tang Chen
2013-07-26 4:00 ` Tang Chen
2013-07-19 7:59 ` [PATCH 19/21] x86, numa: Save nid when reserve memory into memblock.reserved[] Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-19 7:59 ` [PATCH 20/21] x86, numa, acpi, memory-hotplug: Make movablecore=acpi have higher priority Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 21:21 ` Tejun Heo
2013-07-23 21:21 ` Tejun Heo
2013-07-19 7:59 ` [PATCH 21/21] doc, page_alloc, acpi, mem-hotplug: Add doc for movablecore=acpi boot option Tang Chen
2013-07-19 7:59 ` Tang Chen
2013-07-23 21:21 ` Tejun Heo
2013-07-23 21:21 ` Tejun Heo
2013-07-25 3:53 ` Tang Chen
2013-07-25 3:53 ` Tang Chen
2013-07-22 2:48 ` [PATCH 00/21] Arrange hotpluggable memory as ZONE_MOVABLE Tang Chen
2013-07-22 2:48 ` Tang Chen
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