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powerpc: Enable KSM on pseries and ppc64 defconfigs 

KSM will only be used on areas marked for merging via madvise, and it
is showing nice improvements on KVM workloads, so enable it by
default.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anton Blanchard 2015-01-20 10:24:22 +11:00 committed by Michael Ellerman
parent afda939f0a
commit 36c7bfc4d0
3 changed files with 3 additions and 0 deletions
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1
arch/powerpc/configs/ppc64_defconfig
View File

@ -49,6 +49,7 @@ CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_IRQ_ALL_CPUS=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_SCHED_SMT=y
CONFIG_PCCARD=y
CONFIG_ELECTRA_CF=y

1
arch/powerpc/configs/pseries_defconfig
View File

@ -46,6 +46,7 @@ CONFIG_KEXEC=y
CONFIG_IRQ_ALL_CPUS=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_SUBPAGE_PROT=y

1
arch/powerpc/configs/pseries_le_defconfig
View File

@ -47,6 +47,7 @@ CONFIG_KEXEC=y
CONFIG_IRQ_ALL_CPUS=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_SUBPAGE_PROT=y