2 bool "Debug page memory allocations"
3 depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
4 depends on !HIBERNATION || !PPC && !SPARC
7 Unmap pages from the kernel linear mapping after free_pages().
8 This results in a large slowdown, but helps to find certain types
11 config WANT_PAGE_DEBUG_FLAGS
15 bool "Debug page memory allocations"
16 depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC
17 depends on !HIBERNATION
18 select DEBUG_PAGEALLOC
19 select WANT_PAGE_DEBUG_FLAGS
21 Fill the pages with poison patterns after free_pages() and verify
22 the patterns before alloc_pages(). This results in a large slowdown,
23 but helps to find certain types of memory corruption.
25 This option cannot be enabled in combination with hibernation as
26 that would result in incorrect warnings of memory corruption after
27 a resume because free pages are not saved to the suspend image.