diff options
Diffstat (limited to 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug new file mode 100644 index 00000000000..af7cfb43d2f --- /dev/null +++ b/mm/Kconfig.debug @@ -0,0 +1,27 @@ +config DEBUG_PAGEALLOC + bool "Debug page memory allocations" + depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC + depends on !HIBERNATION || !PPC && !SPARC + depends on !KMEMCHECK + ---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 corruption. + +config WANT_PAGE_DEBUG_FLAGS + bool + +config PAGE_POISONING + bool "Debug page memory allocations" + depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC + depends on !HIBERNATION + select DEBUG_PAGEALLOC + select WANT_PAGE_DEBUG_FLAGS + ---help--- + Fill the pages with poison patterns after free_pages() and verify + the patterns before alloc_pages(). This results in a large slowdown, + but helps to find certain types of memory corruption. + + This option cannot be enabled in combination with hibernation as + that would result in incorrect warnings of memory corruption after + a resume because free pages are not saved to the suspend image. |