2 bool "Debug page memory allocations"
3 depends on DEBUG_KERNEL
4 depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
6 select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
8 Unmap pages from the kernel linear mapping after free_pages().
9 This results in a large slowdown, but helps to find certain types
12 For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC,
13 fill the pages with poison patterns after free_pages() and verify
14 the patterns before alloc_pages(). Additionally,
15 this option cannot be enabled in combination with hibernation as
16 that would result in incorrect warnings of memory corruption after
17 a resume because free pages are not saved to the suspend image.
19 config WANT_PAGE_DEBUG_FLAGS
24 select WANT_PAGE_DEBUG_FLAGS