kconfig: remove duplicate SWAP symbol defintions
microblaze and nios2 define their own always n SWAP symbols. Remove those
and let the generic defintion do the right thing by adding a new symbol
to disable swap entirely.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index d147821..cc139d1 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -1,5 +1,6 @@
config MICROBLAZE
def_bool y
+ select ARCH_NO_SWAP
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
@@ -52,9 +53,6 @@
endchoice
-config SWAP
- def_bool n
-
config RWSEM_GENERIC_SPINLOCK
def_bool y
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 3d4ec88..3f9d4ef 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
config NIOS2
def_bool y
+ select ARCH_NO_SWAP
select TIMER_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
@@ -38,9 +39,6 @@
config FPU
def_bool n
-config SWAP
- def_bool n
-
config RWSEM_GENERIC_SPINLOCK
def_bool y
diff --git a/init/Kconfig b/init/Kconfig
index 041f3a0..1e69f93 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -218,9 +218,16 @@
but you may wish to use a different default here to make a minimal
system more usable with less configuration.
+#
+# For some reason microblaze and nios2 hard code SWAP=n. Hopefully we can
+# add proper SWAP support to them, in which case this can be remove.
+#
+config ARCH_NO_SWAP
+ bool
+
config SWAP
bool "Support for paging of anonymous memory (swap)"
- depends on MMU && BLOCK
+ depends on MMU && BLOCK && !ARCH_NO_SWAP
default y
help
This option allows you to choose whether you want to have support
