MIGRATION need depend on MMU, or allmodconfig for sh architecture which
without MMU will be fail for compiling.
The related error:
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))
^
...
Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
mm/Kconfig | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig
index 256bfd0..e847f19 100644
--- a/mm/Kconfig
+++ b/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
--
1.7.7.6
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