Commit | Line | Data |
---|---|---|
ee3b4290 AM |
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 | |
7d46d9e6 | 5 | depends on !KMEMCHECK |
ee3b4290 AM |
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 | |
22f8b458 | 9 | of memory corruption. |
ee3b4290 | 10 | |
6a11f75b AM |
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 | |
22f8b458 | 20 | ---help--- |
6a11f75b AM |
21 | Fill the pages with poison patterns after free_pages() and verify |
22 | the patterns before alloc_pages(). This results in a large slowdown, | |
22f8b458 | 23 | but helps to find certain types of memory corruption. |
6a11f75b | 24 | |
22f8b458 FP |
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. |