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-rw-r--r--arch/s390/Kconfig3
-rw-r--r--arch/s390/Kconfig.debug1
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 2a8af5e16345..dcb667c4375a 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -72,6 +72,9 @@ config PGSTE
72config VIRT_CPU_ACCOUNTING 72config VIRT_CPU_ACCOUNTING
73 def_bool y 73 def_bool y
74 74
75config ARCH_SUPPORTS_DEBUG_PAGEALLOC
76 def_bool y
77
75mainmenu "Linux Kernel Configuration" 78mainmenu "Linux Kernel Configuration"
76 79
77config S390 80config S390
diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug
index 4599fa06bd82..7e297a3cde34 100644
--- a/arch/s390/Kconfig.debug
+++ b/arch/s390/Kconfig.debug
@@ -9,6 +9,7 @@ source "lib/Kconfig.debug"
9config DEBUG_PAGEALLOC 9config DEBUG_PAGEALLOC
10 bool "Debug page memory allocations" 10 bool "Debug page memory allocations"
11 depends on DEBUG_KERNEL 11 depends on DEBUG_KERNEL
12 depends on ARCH_SUPPORTS_DEBUG_PAGEALLOC
12 help 13 help
13 Unmap pages from the kernel linear mapping after free_pages(). 14 Unmap pages from the kernel linear mapping after free_pages().
14 This results in a slowdown, but helps to find certain types of 15 This results in a slowdown, but helps to find certain types of