From: Andrea Arcangeli <aarcange@redhat.com>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
Izik Eidus <ieidus@redhat.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mel@csn.ul.ie>, Dave Hansen <dave@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Chris Wright <chrisw@sous-sol.org>,
bpicco@redhat.com,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Arnd Bergmann <arnd@arndb.de>,
"Michael S. Tsirkin" <mst@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: [PATCH 12 of 41] config_transparent_hugepage
Date: Fri, 26 Mar 2010 17:48:13 +0100 [thread overview]
Message-ID: <ba8fd4669000d74356d6.1269622093@v2.random> (raw)
In-Reply-To: <patchbomb.1269622081@v2.random>
From: Andrea Arcangeli <aarcange@redhat.com>
Add config option.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
---
diff --git a/mm/Kconfig b/mm/Kconfig
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -287,3 +287,17 @@ config NOMMU_INITIAL_TRIM_EXCESS
of 1 says that all excess pages should be trimmed.
See Documentation/nommu-mmap.txt for more information.
+
+config TRANSPARENT_HUGEPAGE
+ bool "Transparent Hugepage support" if EMBEDDED
+ depends on X86_64
+ default y
+ help
+ Transparent Hugepages allows the kernel to use huge pages and
+ huge tlb transparently to the applications whenever possible.
+ This feature can improve computing performance to certain
+ applications by speeding up page faults during memory
+ allocation, by reducing the number of tlb misses and by speeding
+ up the pagetable walking.
+
+ If memory constrained on embedded, you may want to say N.
--
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next prev parent reply other threads:[~2010-03-26 16:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-26 16:48 [PATCH 00 of 41] Transparent Hugepage Support #15 Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 01 of 41] define MADV_HUGEPAGE Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 02 of 41] compound_lock Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 03 of 41] alter compound get_page/put_page Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 04 of 41] update futex compound knowledge Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 05 of 41] fix bad_page to show the real reason the page is bad Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 06 of 41] clear compound mapping Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 07 of 41] add native_set_pmd_at Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 08 of 41] add pmd paravirt ops Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 09 of 41] no paravirt version of pmd ops Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 10 of 41] export maybe_mkwrite Andrea Arcangeli
2010-03-26 16:48 ` [PATCH 11 of 41] comment reminder in destroy_compound_page Andrea Arcangeli
2010-03-26 16:48 ` Andrea Arcangeli [this message]
2010-03-26 16:48 ` [PATCH 13 of 41] special pmd_trans_* functions Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2010-03-26 17:00 [PATCH 00 of 41] Transparent Hugepage Support #15 Andrea Arcangeli
2010-03-26 17:00 ` [PATCH 12 of 41] config_transparent_hugepage Andrea Arcangeli
2010-03-29 18:37 [PATCH 00 of 41] Transparent Hugepage Support #16 Andrea Arcangeli
2010-03-29 18:37 ` [PATCH 12 of 41] config_transparent_hugepage Andrea Arcangeli
2010-04-02 0:41 [PATCH 00 of 41] Transparent Hugepage Support #17 Andrea Arcangeli
2010-04-02 0:41 ` [PATCH 12 of 41] config_transparent_hugepage Andrea Arcangeli
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