git://bbs.cooldavid.org / net-next-2.6.git / blame
| 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. |