From: Andi Kleen <andi@firstfloor.org>
To: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
Andi Kleen <andi@firstfloor.org>, Nick Piggin <npiggin@suse.de>,
Christoph Lameter <cl@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
haicheng.li@intel.com,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [patch] slab: add memory hotplug support
Date: Tue, 2 Mar 2010 13:53:06 +0100 [thread overview]
Message-ID: <20100302125306.GD19208@basil.fritz.box> (raw)
In-Reply-To: <alpine.DEB.2.00.1003010224170.26824@chino.kir.corp.google.com>
On Mon, Mar 01, 2010 at 02:24:43AM -0800, David Rientjes wrote:
> Slab lacks any memory hotplug support for nodes that are hotplugged
> without cpus being hotplugged. This is possible at least on x86
> CONFIG_MEMORY_HOTPLUG_SPARSE kernels where SRAT entries are marked
> ACPI_SRAT_MEM_HOT_PLUGGABLE and the regions of RAM represent a seperate
> node. It can also be done manually by writing the start address to
> /sys/devices/system/memory/probe for kernels that have
> CONFIG_ARCH_MEMORY_PROBE set, which is how this patch was tested, and
> then onlining the new memory region.
The patch looks far more complicated than my simple fix.
Is more complicated now better?
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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next prev parent reply other threads:[~2010-03-02 12:53 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-11 20:53 [PATCH] [0/4] Update slab memory hotplug series Andi Kleen
2010-02-11 20:54 ` [PATCH] [1/4] SLAB: Handle node-not-up case in fallback_alloc() v2 Andi Kleen
2010-02-11 21:41 ` David Rientjes
2010-02-11 21:55 ` Andi Kleen
2010-02-15 6:04 ` Nick Piggin
2010-02-15 10:07 ` Andi Kleen
2010-02-15 10:22 ` Nick Piggin
2010-02-11 20:54 ` [PATCH] [2/4] SLAB: Separate node initialization into separate function Andi Kleen
2010-02-11 21:44 ` David Rientjes
2010-02-11 20:54 ` [PATCH] [3/4] SLAB: Set up the l3 lists for the memory of freshly added memory v2 Andi Kleen
2010-02-11 21:45 ` David Rientjes
2010-02-15 6:06 ` Nick Piggin
2010-02-15 21:47 ` David Rientjes
2010-02-16 14:04 ` Nick Piggin
2010-02-16 20:45 ` Pekka Enberg
2010-02-11 20:54 ` [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap Andi Kleen
2010-02-11 21:45 ` David Rientjes
2010-02-15 6:15 ` Nick Piggin
2010-02-15 10:32 ` Andi Kleen
2010-02-15 10:41 ` Nick Piggin
2010-02-15 10:52 ` Andi Kleen
2010-02-15 11:01 ` Nick Piggin
2010-02-15 15:30 ` Andi Kleen
2010-02-19 18:22 ` Christoph Lameter
2010-02-20 9:01 ` Andi Kleen
2010-02-22 10:53 ` Pekka Enberg
2010-02-22 14:31 ` Andi Kleen
2010-02-22 16:11 ` Pekka Enberg
2010-02-22 20:20 ` Andi Kleen
2010-02-24 15:49 ` Christoph Lameter
2010-02-25 7:26 ` Pekka Enberg
2010-02-25 8:01 ` David Rientjes
2010-02-25 18:30 ` Christoph Lameter
2010-02-25 21:45 ` David Rientjes
2010-02-25 22:31 ` Christoph Lameter
2010-02-26 10:45 ` Pekka Enberg
2010-02-26 11:43 ` Andi Kleen
2010-02-26 12:35 ` Pekka Enberg
2010-02-26 14:08 ` Andi Kleen
2010-02-26 1:09 ` KAMEZAWA Hiroyuki
2010-02-26 11:41 ` Andi Kleen
2010-02-26 15:04 ` Christoph Lameter
2010-02-26 15:05 ` Christoph Lameter
2010-02-26 15:59 ` Andi Kleen
2010-02-26 15:57 ` Andi Kleen
2010-02-26 17:24 ` Christoph Lameter
2010-02-26 17:31 ` Andi Kleen
2010-03-01 1:59 ` KAMEZAWA Hiroyuki
2010-03-01 10:27 ` David Rientjes
2010-02-27 0:01 ` David Rientjes
2010-03-01 10:24 ` [patch] slab: add memory hotplug support David Rientjes
2010-03-02 5:53 ` Pekka Enberg
2010-03-02 20:20 ` Christoph Lameter
2010-03-02 21:03 ` David Rientjes
2010-03-03 1:28 ` KAMEZAWA Hiroyuki
2010-03-03 2:39 ` David Rientjes
2010-03-03 2:51 ` KAMEZAWA Hiroyuki
2010-03-02 12:53 ` Andi Kleen [this message]
2010-03-02 15:04 ` Pekka Enberg
2010-03-03 14:34 ` Andi Kleen
2010-03-03 15:46 ` Christoph Lameter
2010-03-02 21:17 ` David Rientjes
2010-03-05 6:20 ` Nick Piggin
2010-03-05 12:47 ` Anca Emanuel
2010-03-05 13:58 ` Anca Emanuel
2010-03-05 14:11 ` Christoph Lameter
2010-03-08 3:06 ` Andi Kleen
2010-03-08 2:58 ` Andi Kleen
2010-03-08 23:19 ` David Rientjes
2010-03-09 13:46 ` Nick Piggin
2010-03-22 17:28 ` Pekka Enberg
2010-03-22 21:12 ` Nick Piggin
2010-03-28 2:13 ` David Rientjes
2010-03-28 2:40 ` [patch v2] " David Rientjes
2010-03-30 9:01 ` Pekka Enberg
2010-03-30 16:43 ` Christoph Lameter
2010-04-04 20:45 ` David Rientjes
2010-04-07 16:29 ` Pekka Enberg
2010-02-25 18:34 ` [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap Christoph Lameter
2010-02-25 18:46 ` Pekka Enberg
2010-02-25 19:19 ` Christoph Lameter
2010-03-02 12:55 ` Andi Kleen
2010-02-19 18:22 ` Christoph Lameter
2010-02-22 10:57 ` Pekka Enberg
2010-02-13 10:24 ` [PATCH] [0/4] Update slab memory hotplug series Pekka Enberg
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