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- 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 corruptions.
- 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 corruptions.
- This option cannot enalbe with hibernation. Otherwise, it will get
- wrong messages for memory corruption because the free pages are not
- saved to the suspend image.
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