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1 | config 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 | |
11 | config WANT_PAGE_DEBUG_FLAGS |
12 | bool |
13 | |
14 | config 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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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9