1 files changed, 9 insertions, 0 deletions

diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index c8d62d49a44e..bb01e298f260 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -1,3 +1,12 @@
+config DEBUG_PAGEALLOC
+        bool "Debug page memory allocations"
+        depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
+        depends on !HIBERNATION || !PPC && !SPARC
+        ---help---
+          Unmap pages from the kernel linear mapping after free_pages().
+          This results in a large slowdown, but helps to find certain types
+          of memory corruptions.
+
 config WANT_PAGE_DEBUG_FLAGS
         bool