linux-kernel - [PATCH 34/40] autonuma: add CONFIG_AUTONUMA and CONFIG_AUTONUMA_DEFAULT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1340888180-15355-35-git-send-email-aarcange@redhat.com>
Date:	Thu, 28 Jun 2012 14:56:14 +0200
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:	Hillf Danton <dhillf@...il.com>, Dan Smith <danms@...ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Paul Turner <pjt@...gle.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Mike Galbraith <efault@....de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Bharata B Rao <bharata.rao@...il.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Christoph Lameter <cl@...ux.com>,
	Alex Shi <alex.shi@...el.com>,
	Mauricio Faria de Oliveira <mauricfo@...ux.vnet.ibm.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Don Morris <don.morris@...com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH 34/40] autonuma: add CONFIG_AUTONUMA and CONFIG_AUTONUMA_DEFAULT_ENABLED

Add the config options to allow building the kernel with AutoNUMA.

If CONFIG_AUTONUMA_DEFAULT_ENABLED is "=y", then
/sys/kernel/mm/autonuma/enabled will be equal to 1, and AutoNUMA will
be enabled automatically at boot.

CONFIG_AUTONUMA currently depends on X86, because no other arch
implements the pte/pmd_numa yet and selecting =y would result in a
failed build, but this shall be relaxed in the future. Porting
AutoNUMA to other archs should be pretty simple.

Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
---
 mm/Kconfig |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 82fed4e..330dd51 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -207,6 +207,19 @@ config MIGRATION
 	  pages as migration can relocate pages to satisfy a huge page
 	  allocation instead of reclaiming.
 
+config AUTONUMA
+	bool "Auto NUMA"
+	select MIGRATION
+	depends on NUMA && X86
+	help
+	  Automatic NUMA CPU scheduling and memory migration.
+
+config AUTONUMA_DEFAULT_ENABLED
+	bool "Auto NUMA default enabled"
+	depends on AUTONUMA
+	help
+	  Automatic NUMA CPU scheduling and memory migration enabled at boot.
+
 config PHYS_ADDR_T_64BIT
 	def_bool 64BIT || ARCH_PHYS_ADDR_T_64BIT
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/