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 <[email protected]> --- 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
