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[187.161.191.185]) by smtp.googlemail.com with ESMTPSA id w5-v6sm2778982otg.5.2018.06.14.15.52.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 14 Jun 2018 15:52:28 -0700 (PDT) From: =?UTF-8?q?Daniel=20D=C3=ADaz?= To: linux-arm-kernel@lists.infradead.org Cc: anders.roxell@linaro.org, =?UTF-8?q?Daniel=20D=C3=ADaz?= , Russell King , Arnd Bergmann , Simon Horman , Stefan Agner , Tony Lindgren , Eric Anholt , Geert Uytterhoeven , Martin Blumenstingl , Marek Szyprowski , Kishon Vijay Abraham I , Krzysztof Kozlowski , Maxime Ripard , Marc Zyngier , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 2/2] arm: multi_v7_defconfig: Enable KSM. Date: Thu, 14 Jun 2018 17:50:27 -0500 Message-Id: <1529016629-2948-2-git-send-email-daniel.diaz@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1529016629-2948-1-git-send-email-daniel.diaz@linaro.org> References: <1529016629-2948-1-git-send-email-daniel.diaz@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As per the documentation, Kernel Samepage Merging (available since 2.6.32) is a memory-saving de-duplication feature, enabled by CONFIG_KSM=y and activated via sysfs. More information can be found here: https://www.kernel.org/doc/Documentation/vm/ksm.txt When enabled in the kernel, the default is to not do anything at all, until it is activated at run-time with: echo 1 > /sys/kernel/mm/ksm/run Signed-off-by: Daniel Díaz --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 7e1c543..79eedf4d 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -133,6 +133,7 @@ CONFIG_SMP=y CONFIG_NR_CPUS=16 CONFIG_HIGHPTE=y CONFIG_CMA=y +CONFIG_KSM=y CONFIG_SECCOMP=y CONFIG_ARM_APPENDED_DTB=y CONFIG_ARM_ATAG_DTB_COMPAT=y -- 2.7.4