From: David Rientjes <rientjes@google.com>
To: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
lethal@linux-sh.org, Andi Kleen <ak@linux.intel.com>,
Dave Hansen <dave@linux.vnet.ibm.com>, Greg KH <gregkh@suse.de>,
Haicheng Li <haicheng.li@intel.com>
Subject: Re: [8/8, v6] NUMA Hotplug Emulator: implement debugfs interface for memory probe
Date: Wed, 1 Dec 2010 18:13:18 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1012011807190.13942@chino.kir.corp.google.com> (raw)
In-Reply-To: <20101202002716.GA13693@shaohui>
On Thu, 2 Dec 2010, Shaohui Zheng wrote:
> so we should still keep the sysfs memory/probe interface without any modifications,
> but for the debugfs mem_hotplug/probe interface, we can add the memory region
> to a desired node.
This feature would be distinct from the add_node interface already
provided: instead of hotplugging a new node to test the memory hotplug
callbacks, this new interface would only be hotadding new memory to a node
other than the one it has physical affinity with. For that support, I'd
suggest new probe files in debugfs for each online node:
/sys/kernel/debug/mem_hotplug/add_node (already exists)
/sys/kernel/debug/mem_hotplug/node0/add_memory
/sys/kernel/debug/mem_hotplug/node1/add_memory
...
and then you can offline and remove that memory with the existing hotplug
support (CONFIG_MEMORY_HOTPLUG and CONFIG_MEMORY_HOTREMOVE, respectively).
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-12-02 2:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <A24AE1FFE7AEC5489F83450EE98351BF288D88D224@shsmsx502.ccr.corp.intel.com>
2010-12-02 0:27 ` Shaohui Zheng
2010-12-02 2:13 ` David Rientjes [this message]
2010-12-02 2:35 ` Zheng, Shaohui
2010-12-02 23:34 ` David Rientjes
2010-12-06 1:22 ` Zheng, Shaohui
2010-11-30 7:13 [0/8, v6] NUMA Hotplug Emulator(v6) - Introduction & Feedbacks shaohui.zheng
2010-11-30 7:13 ` [8/8, v6] NUMA Hotplug Emulator: implement debugfs interface for memory probe shaohui.zheng
2010-12-02 0:57 ` David Rientjes
2010-12-01 23:45 ` Shaohui Zheng
2010-12-02 1:21 ` David Rientjes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.DEB.2.00.1012011807190.13942@chino.kir.corp.google.com \
--to=rientjes@google.com \
--cc=ak@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=dave@linux.vnet.ibm.com \
--cc=gregkh@suse.de \
--cc=haicheng.li@intel.com \
--cc=lethal@linux-sh.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=shaohui.zheng@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox