Root/mm/Kconfig.debug

Source at commit 6c17a31f1fc515425221067cb3ece599c09dbc5d created 12 years 8 months ago.
By Werner Almesberger, atusb, atben: moved from spi/ to ieee802154/; renamed atusb to spi_atusb
1config DEBUG_PAGEALLOC
2    bool "Debug page memory allocations"
3    depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
4    depends on !HIBERNATION || !PPC && !SPARC
5    depends on !KMEMCHECK
6    ---help---
7      Unmap pages from the kernel linear mapping after free_pages().
8      This results in a large slowdown, but helps to find certain types
9      of memory corruption.
10
11config WANT_PAGE_DEBUG_FLAGS
12    bool
13
14config PAGE_POISONING
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
20    ---help---
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.
24
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.
28

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