Subject: + mm-kconfig-add-mmu-dependency-for-migration.patch added to -mm tree
To: gang.chen@xxxxxxxxxxx,mhocko@xxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 08 Aug 2013 13:52:07 -0700
The patch titled
Subject: mm/Kconfig: add MMU dependency for MIGRATION.
has been added to the -mm tree. Its filename is
mm-kconfig-add-mmu-dependency-for-migration.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-kconfig-add-mmu-dependency-for-migration.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-kconfig-add-mmu-dependency-for-migration.patch
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------------------------------------------------------
From: Chen Gang <gang.chen@xxxxxxxxxxx>
Subject: mm/Kconfig: add MMU dependency for MIGRATION.
MIGRATION must depend on MMU, or allmodconfig for the nommu sh
architecture fails to build:
CC mm/migrate.o
mm/migrate.c: In function 'remove_migration_pte':
mm/migrate.c:134:3: error: implicit declaration of function 'pmd_trans_huge' [-Werror=implicit-function-declaration]
if (pmd_trans_huge(*pmd))
^
mm/migrate.c:149:2: error: implicit declaration of function 'is_swap_pte' [-Werror=implicit-function-declaration]
if (!is_swap_pte(pte))
^
...
Also let CMA depend on MMU, or when NOMMU, if we select CMA, it will
select MIGRATION by force.
Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/Kconfig~mm-kconfig-add-mmu-dependency-for-migration mm/Kconfig
--- a/mm/Kconfig~mm-kconfig-add-mmu-dependency-for-migration
+++ a/mm/Kconfig
@@ -245,7 +245,7 @@ config COMPACTION
config MIGRATION
bool "Page migration"
def_bool y
- depends on NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION || CMA
+ depends on (NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION || CMA) && MMU
help
Allows the migration of the physical location of pages of processes
while the virtual addresses are not changed. This is useful in
@@ -522,7 +522,7 @@ config MEM_SOFT_DIRTY
config CMA
bool "Contiguous Memory Allocator"
- depends on HAVE_MEMBLOCK
+ depends on HAVE_MEMBLOCK && MMU
select MIGRATION
select MEMORY_ISOLATION
help
_
Patches currently in -mm which might be from gang.chen@xxxxxxxxxxx are
origin.patch
arch-kconfig-add-kernel-kconfigfreezer-to-arch-kconfig.patch
sh64-kernel-use-usp-instead-of-fn.patch
sh64-kernel-remove-useless-variable-regs.patch
include-linux-interrupth-add-dummy-irq_set_irq_wake-for-generic_hardirqs.patch
mm-page_allocc-use-__paginginit-instead-of-__init.patch
kernel-smpc-free-related-resources-when-failure-occurs-in-hotplug_cfd.patch
linux-next.patch
mm-kconfig-add-mmu-dependency-for-migration.patch
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