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Kconfig.debug

Kconfig.debug 954 B
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  1. config DEBUG_PAGEALLOC
    2. 

  2. 	bool "Debug page memory allocations"
    3. 

  3. 	depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
    4. 

  4. 	depends on !HIBERNATION || !PPC && !SPARC
    5. 

  5. 	---help---
    6. 

  6. 	  Unmap pages from the kernel linear mapping after free_pages().
    7. 

  7. 	  This results in a large slowdown, but helps to find certain types
    8. 

  8. 	  of memory corruptions.
    9. 

  9. 

  10. config WANT_PAGE_DEBUG_FLAGS
    11. 

  11. 	bool
    12. 

  12. 

  13. config PAGE_POISONING
    14. 

  14. 	bool "Debug page memory allocations"
    15. 

  15. 	depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC
    16. 

  16. 	depends on !HIBERNATION
    17. 

  17. 	select DEBUG_PAGEALLOC
    18. 

  18. 	select WANT_PAGE_DEBUG_FLAGS
    19. 

  19. 	help
    20. 

  20. 	   Fill the pages with poison patterns after free_pages() and verify
    21. 

  21. 	   the patterns before alloc_pages(). This results in a large slowdown,
    22. 

  22. 	   but helps to find certain types of memory corruptions.
    23. 

  23. 

  24. 	   This option cannot enalbe with hibernation. Otherwise, it will get
    25. 

  25. 	   wrong messages for memory corruption because the free pages are not
    26. 

  26. 	   saved to the suspend image.
    27.