From: Tang Chen <tangchen@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org,
linux-mm@kvack.org, paulus@samba.org, hpa@zytor.com,
sparclinux@vger.kernel.org, cl@linux.com,
linux-s390@vger.kernel.org, x86@kernel.org,
linux-acpi@vger.kernel.org, isimatu.yasuaki@jp.fujitsu.com,
linfeng@cn.fujitsu.com, mgorman@suse.de,
kosaki.motohiro@jp.fujitsu.com, rientjes@google.com,
len.brown@intel.com, wency@cn.fujitsu.com, cmetcalf@tilera.com,
glommer@parallels.com, wujianguo@huawei.com, yinghai@kernel.org,
laijs@cn.fujitsu.com, linux-kernel@vger.kernel.org,
minchan.kim@gmail.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v6 00/15] memory-hotplug: hot-remove physical memory
Date: Thu, 10 Jan 2013 10:18:40 +0800 [thread overview]
Message-ID: <50EE2500.2040903@cn.fujitsu.com> (raw)
In-Reply-To: <20130109153324.bbd019b3.akpm@linux-foundation.org>
Hi Andrew,
On 01/10/2013 07:33 AM, Andrew Morton wrote:
> On Wed, 9 Jan 2013 17:32:24 +0800
> Tang Chen<tangchen@cn.fujitsu.com> wrote:
>
>> This patch-set aims to implement physical memory hot-removing.
>
> As you were on th patch delivery path, all of these patches should have
> your Signed-off-by:. But some were missing it. I fixed this in my
> copy of the patches.
Thank you very much for the help. Next time I'll add it myself.
>
>
> I suspect this patchset adds a significant amount of code which will
> not be used if CONFIG_MEMORY_HOTPLUG=n. "[PATCH v6 06/15]
> memory-hotplug: implement register_page_bootmem_info_section of
> sparse-vmemmap", for example. This is not a good thing, so please go
> through the patchset (in fact, go through all the memhotplug code) and
> let's see if we can reduce the bloat for CONFIG_MEMORY_HOTPLUG=n
> kernels.
>
> This needn't be done immediately - it would be OK by me if you were to
> defer this exercise until all the new memhotplug code is largely in
> place. But please, let's do it.
OK, I'll do have a check on it when the page_cgroup problem is solved.
Thanks. :)
>
>
>
next prev parent reply other threads:[~2013-01-10 2:19 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-09 9:32 [PATCH v6 00/15] memory-hotplug: hot-remove physical memory Tang Chen
2013-01-09 9:32 ` [PATCH v6 01/15] memory-hotplug: try to offline the memory twice to avoid dependence Tang Chen
2013-01-09 9:32 ` [PATCH v6 02/15] memory-hotplug: check whether all memory blocks are offlined or not when removing memory Tang Chen
2013-01-09 23:11 ` Andrew Morton
2013-01-10 5:56 ` Tang Chen
2013-01-09 9:32 ` [PATCH v6 03/15] memory-hotplug: remove redundant codes Tang Chen
2013-01-09 9:32 ` [PATCH v6 04/15] memory-hotplug: remove /sys/firmware/memmap/X sysfs Tang Chen
2013-01-09 22:49 ` Andrew Morton
2013-01-10 6:07 ` Tang Chen
2013-01-09 23:19 ` Andrew Morton
2013-01-10 6:15 ` Tang Chen
2013-01-09 9:32 ` [PATCH v6 05/15] memory-hotplug: introduce new function arch_remove_memory() for removing page table depends on architecture Tang Chen
2013-01-09 22:50 ` Andrew Morton
2013-01-10 2:25 ` Tang Chen
2013-01-09 9:32 ` [PATCH v6 06/15] memory-hotplug: implement register_page_bootmem_info_section of sparse-vmemmap Tang Chen
2013-01-09 9:32 ` [PATCH v6 07/15] memory-hotplug: move pgdat_resize_lock into sparse_remove_one_section() Tang Chen
2013-01-09 9:32 ` [PATCH v6 08/15] memory-hotplug: Common APIs to support page tables hot-remove Tang Chen
2013-01-29 13:02 ` Simon Jeons
2013-01-30 1:53 ` Jianguo Wu
2013-01-30 2:13 ` Simon Jeons
2013-01-29 13:04 ` Simon Jeons
2013-01-30 2:16 ` Tang Chen
2013-01-30 3:27 ` Simon Jeons
2013-01-30 5:55 ` Tang Chen
2013-01-30 7:32 ` Simon Jeons
2013-02-04 23:04 ` Andrew Morton
2013-01-09 9:32 ` [PATCH v6 09/15] memory-hotplug: remove page table of x86_64 architecture Tang Chen
2013-01-09 9:32 ` [PATCH v6 10/15] memory-hotplug: remove memmap of sparse-vmemmap Tang Chen
2013-01-09 9:32 ` [PATCH v6 11/15] memory-hotplug: Integrated __remove_section() of CONFIG_SPARSEMEM_VMEMMAP Tang Chen
2013-01-09 9:32 ` [PATCH v6 12/15] memory-hotplug: memory_hotplug: clear zone when removing the memory Tang Chen
2013-01-09 9:32 ` [PATCH v6 13/15] memory-hotplug: remove sysfs file of node Tang Chen
2013-01-09 9:32 ` [PATCH v6 14/15] memory-hotplug: free node_data when a node is offlined Tang Chen
2013-01-09 9:32 ` [PATCH v6 15/15] memory-hotplug: Do not allocate pdgat if it was not freed when offline Tang Chen
2013-01-09 22:23 ` [PATCH v6 00/15] memory-hotplug: hot-remove physical memory Andrew Morton
2013-01-10 2:17 ` Tang Chen
2013-01-10 7:14 ` Glauber Costa
2013-01-10 7:31 ` Kamezawa Hiroyuki
2013-01-10 7:55 ` Glauber Costa
2013-01-10 8:23 ` Kamezawa Hiroyuki
2013-01-10 8:36 ` Glauber Costa
2013-01-10 8:39 ` Kamezawa Hiroyuki
2013-01-09 23:33 ` Andrew Morton
2013-01-10 2:18 ` Tang Chen [this message]
2013-01-29 12:52 ` Simon Jeons
2013-01-30 2:32 ` Tang Chen
2013-01-30 2:48 ` Simon Jeons
2013-01-30 3:00 ` Tang Chen
2013-01-30 10:15 ` Tang Chen
2013-01-30 10:18 ` Tang Chen
2013-01-31 1:22 ` Simon Jeons
2013-01-31 3:31 ` Tang Chen
2013-01-31 6:19 ` Simon Jeons
2013-01-31 7:10 ` Tang Chen
2013-01-31 8:17 ` Simon Jeons
2013-01-31 8:48 ` Simon Jeons
2013-01-31 9:44 ` Tang Chen
2013-01-31 10:38 ` Simon Jeons
2013-02-01 1:32 ` Jianguo Wu
2013-02-01 1:36 ` Simon Jeons
2013-02-01 1:57 ` Jianguo Wu
2013-02-01 2:06 ` Simon Jeons
2013-02-01 2:18 ` Jianguo Wu
2013-02-01 1:57 ` Tang Chen
2013-02-01 2:17 ` Simon Jeons
2013-02-01 2:42 ` Tang Chen
2013-02-01 3:06 ` Simon Jeons
2013-02-01 3:39 ` Tang Chen
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