| 12345678910111213141516171819202122232425 |
- config DEBUG_PAGEALLOC
- bool "Debug page memory allocations"
- depends on DEBUG_KERNEL
- depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
- depends on !KMEMCHECK
- select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
- ---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.
- For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC,
- fill the pages with poison patterns after free_pages() and verify
- the patterns before alloc_pages(). Additionally,
- 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.
- config WANT_PAGE_DEBUG_FLAGS
- bool
- config PAGE_POISONING
- bool
- select WANT_PAGE_DEBUG_FLAGS
|
