From: Mel Gorman <mel@csn.ul.ie>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Christoph Lameter <cl@linux-foundation.org>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mel@csn.ul.ie>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 04/11] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove
Date: Fri, 12 Mar 2010 16:41:20 +0000 [thread overview]
Message-ID: <1268412087-13536-5-git-send-email-mel@csn.ul.ie> (raw)
In-Reply-To: <1268412087-13536-1-git-send-email-mel@csn.ul.ie>
CONFIG_MIGRATION currently depends on CONFIG_NUMA or on the architecture
being able to hot-remove memory. The main users of page migration such as
sys_move_pages(), sys_migrate_pages() and cpuset process migration are
only beneficial on NUMA so it makes sense.
As memory compaction will operate within a zone and is useful on both NUMA
and non-NUMA systems, this patch allows CONFIG_MIGRATION to be set if the
user selects CONFIG_COMPACTION as an option.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
mm/Kconfig | 20 ++++++++++++++++----
1 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig
index 9c61158..04e241b 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -172,17 +172,29 @@ config SPLIT_PTLOCK_CPUS
default "4"
#
+# support for memory compaction
+config COMPACTION
+ bool "Allow for memory compaction"
+ def_bool y
+ select MIGRATION
+ depends on EXPERIMENTAL && HUGETLBFS && MMU
+ help
+ Allows the compaction of memory for the allocation of huge pages.
+
+#
# support for page migration
#
config MIGRATION
bool "Page migration"
def_bool y
- depends on NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE
+ depends on NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION
help
Allows the migration of the physical location of pages of processes
- while the virtual addresses are not changed. This is useful for
- example on NUMA systems to put pages nearer to the processors accessing
- the page.
+ while the virtual addresses are not changed. This is useful in
+ two situations. The first is on NUMA systems to put pages nearer
+ to the processors accessing. The second is when allocating huge
+ pages as migration can relocate pages to satisfy a huge page
+ allocation instead of reclaiming.
config PHYS_ADDR_T_64BIT
def_bool 64BIT || ARCH_PHYS_ADDR_T_64BIT
--
1.6.5
next prev parent reply other threads:[~2010-03-12 16:43 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-12 16:41 [PATCH 0/11] Memory Compaction v4 Mel Gorman
2010-03-12 16:41 ` [PATCH 01/11] mm,migration: Take a reference to the anon_vma before migrating Mel Gorman
2010-03-14 15:01 ` Minchan Kim
2010-03-15 5:06 ` KAMEZAWA Hiroyuki
2010-03-17 1:44 ` KOSAKI Motohiro
2010-03-17 11:45 ` Mel Gorman
2010-03-17 16:38 ` Christoph Lameter
2010-03-18 11:12 ` Mel Gorman
2010-03-18 16:31 ` Christoph Lameter
2010-03-12 16:41 ` [PATCH 02/11] mm,migration: Do not try to migrate unmapped anonymous pages Mel Gorman
2010-03-15 0:28 ` Minchan Kim
2010-03-15 5:34 ` KAMEZAWA Hiroyuki
2010-03-15 6:28 ` Minchan Kim
2010-03-15 6:44 ` KAMEZAWA Hiroyuki
2010-03-15 7:09 ` KAMEZAWA Hiroyuki
2010-03-15 13:48 ` Minchan Kim
2010-03-15 7:11 ` Minchan Kim
2010-03-15 11:28 ` Mel Gorman
2010-03-15 12:48 ` Minchan Kim
2010-03-15 14:21 ` Mel Gorman
2010-03-15 14:33 ` Minchan Kim
2010-03-15 23:49 ` KAMEZAWA Hiroyuki
2010-03-17 2:12 ` KAMEZAWA Hiroyuki
2010-03-17 3:00 ` Minchan Kim
2010-03-17 3:15 ` KAMEZAWA Hiroyuki
2010-03-17 4:15 ` Minchan Kim
2010-03-17 4:19 ` KAMEZAWA Hiroyuki
2010-03-17 16:41 ` Christoph Lameter
2010-03-18 0:30 ` KAMEZAWA Hiroyuki
2010-03-17 12:07 ` Mel Gorman
2010-03-17 2:03 ` KOSAKI Motohiro
2010-03-17 11:51 ` Mel Gorman
2010-03-18 0:48 ` KOSAKI Motohiro
2010-03-18 11:14 ` Mel Gorman
2010-03-19 6:21 ` KOSAKI Motohiro
2010-03-19 8:59 ` Mel Gorman
2010-03-25 2:49 ` KOSAKI Motohiro
2010-03-25 8:32 ` Mel Gorman
2010-03-25 8:56 ` KOSAKI Motohiro
2010-03-25 9:18 ` Mel Gorman
2010-03-25 9:02 ` KAMEZAWA Hiroyuki
2010-03-25 9:09 ` KOSAKI Motohiro
2010-03-25 9:08 ` KAMEZAWA Hiroyuki
2010-03-25 9:21 ` Mel Gorman
2010-03-25 9:41 ` KAMEZAWA Hiroyuki
2010-03-25 9:59 ` KOSAKI Motohiro
2010-03-25 10:12 ` KAMEZAWA Hiroyuki
2010-03-25 13:39 ` Mel Gorman
2010-03-26 3:07 ` KOSAKI Motohiro
2010-03-26 13:49 ` Mel Gorman
2010-03-25 15:29 ` Minchan Kim
2010-03-26 0:58 ` KAMEZAWA Hiroyuki
2010-03-26 1:39 ` Minchan Kim
2010-03-25 14:35 ` Christoph Lameter
2010-03-25 16:16 ` Minchan Kim
2010-03-12 16:41 ` [PATCH 03/11] mm: Share the anon_vma ref counts between KSM and page migration Mel Gorman
2010-03-12 17:14 ` Rik van Riel
2010-03-15 5:35 ` KAMEZAWA Hiroyuki
2010-03-17 2:06 ` KOSAKI Motohiro
2010-03-12 16:41 ` Mel Gorman [this message]
2010-03-17 2:28 ` [PATCH 04/11] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove KOSAKI Motohiro
2010-03-17 11:32 ` Mel Gorman
2010-03-17 16:37 ` Christoph Lameter
2010-03-17 23:56 ` KOSAKI Motohiro
2010-03-18 11:24 ` Mel Gorman
2010-03-19 6:21 ` KOSAKI Motohiro
2010-03-19 10:16 ` Mel Gorman
2010-03-25 3:28 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 05/11] Export unusable free space index via /proc/unusable_index Mel Gorman
2010-03-15 5:41 ` KAMEZAWA Hiroyuki
2010-03-15 9:48 ` Mel Gorman
2010-03-17 2:42 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 06/11] Export fragmentation index via /proc/extfrag_index Mel Gorman
2010-03-17 2:49 ` KOSAKI Motohiro
2010-03-17 11:33 ` Mel Gorman
2010-03-23 0:22 ` KOSAKI Motohiro
2010-03-23 12:03 ` Mel Gorman
2010-03-25 2:47 ` KOSAKI Motohiro
2010-03-25 8:47 ` Mel Gorman
2010-03-25 11:20 ` KOSAKI Motohiro
2010-03-25 14:11 ` Mel Gorman
2010-03-26 3:10 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 07/11] Memory compaction core Mel Gorman
2010-03-15 13:44 ` Minchan Kim
2010-03-15 14:41 ` Mel Gorman
2010-03-17 10:31 ` KOSAKI Motohiro
2010-03-17 11:40 ` Mel Gorman
2010-03-18 2:35 ` KOSAKI Motohiro
2010-03-18 11:43 ` Mel Gorman
2010-03-19 6:21 ` KOSAKI Motohiro
2010-03-18 17:08 ` Mel Gorman
2010-03-12 16:41 ` [PATCH 08/11] Add /proc trigger for memory compaction Mel Gorman
2010-03-17 3:18 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 09/11] Add /sys trigger for per-node " Mel Gorman
2010-03-17 3:18 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 10/11] Direct compact when a high-order allocation fails Mel Gorman
2010-03-16 2:47 ` Minchan Kim
2010-03-19 6:21 ` KOSAKI Motohiro
2010-03-19 6:31 ` KOSAKI Motohiro
2010-03-19 10:10 ` Mel Gorman
2010-03-25 11:22 ` KOSAKI Motohiro
2010-03-19 10:09 ` Mel Gorman
2010-03-25 11:08 ` KOSAKI Motohiro
2010-03-25 15:11 ` Mel Gorman
2010-03-26 6:01 ` KOSAKI Motohiro
2010-03-12 16:41 ` [PATCH 11/11] Do not compact within a preferred zone after a compaction failure Mel Gorman
2010-03-23 12:25 [PATCH 0/11] Memory Compaction v5 Mel Gorman
2010-03-23 12:25 ` [PATCH 04/11] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove Mel Gorman
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