s390: enable ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT

Deferred struct page initialization works on s390. However it makes
only sense for the fake numa case, since the kthreads that initialize
struct pages are started per node. Without fake numa there is just a
single node and therefore no gain.
However there is no reason to not enable this feature. Therefore
select the config option and enable the feature in all config files.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1521edafdd15eda478df8e9a2798446dfe2f0caa..fc842c4bd7204e1b64e64b6c0a0af95ffcb9667a 100644 (file)
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -105,6 +105,7 @@ config S390
        select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
        select ARCH_SAVE_PAGE_KEYS if HIBERNATION
        select ARCH_SUPPORTS_ATOMIC_RMW
+       select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
        select ARCH_SUPPORTS_NUMA_BALANCING
        select ARCH_USE_BUILTIN_BSWAP
        select ARCH_USE_CMPXCHG_LOCKREF

diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig
index 4b176fe83da4c6abeeaec2144635c87337cb3388..a5039fa8931442a5c5b35c77fbee22fe86e78131 100644 (file)
--- a/arch/s390/configs/default_defconfig
+++ b/arch/s390/configs/default_defconfig
@@ -73,6 +73,7 @@ CONFIG_ZSWAP=y
 CONFIG_ZBUD=m
 CONFIG_ZSMALLOC=m
 CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
 CONFIG_IDLE_PAGE_TRACKING=y
 CONFIG_PCI=y
 CONFIG_PCI_DEBUG=y

diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig
index 0de46cc397f6fe7a89f7e26c569287a41dc8a7fb..83970b5afb2bc32f8ca86545c6eea31ece2d0001 100644 (file)
--- a/arch/s390/configs/gcov_defconfig
+++ b/arch/s390/configs/gcov_defconfig
@@ -72,6 +72,7 @@ CONFIG_ZSWAP=y
 CONFIG_ZBUD=m
 CONFIG_ZSMALLOC=m
 CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
 CONFIG_IDLE_PAGE_TRACKING=y
 CONFIG_PCI=y
 CONFIG_HOTPLUG_PCI=y

diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig
index e167557b434c201e421c5bda3d263849859d7609..fbc6542aaf5955bdeb839fbf03496d2b39113688 100644 (file)
--- a/arch/s390/configs/performance_defconfig
+++ b/arch/s390/configs/performance_defconfig
@@ -70,6 +70,7 @@ CONFIG_ZSWAP=y
 CONFIG_ZBUD=m
 CONFIG_ZSMALLOC=m
 CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
 CONFIG_IDLE_PAGE_TRACKING=y
 CONFIG_PCI=y
 CONFIG_HOTPLUG_PCI=y