| Akinobu Mita | 6a11f75 | 2009-03-31 15:23:17 -0700 | [diff] [blame^] | 1 | config WANT_PAGE_DEBUG_FLAGS |
| 2 | bool |
| 3 | |
| 4 | config PAGE_POISONING |
| 5 | bool "Debug page memory allocations" |
| 6 | depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC |
| 7 | depends on !HIBERNATION |
| 8 | select DEBUG_PAGEALLOC |
| 9 | select WANT_PAGE_DEBUG_FLAGS |
| 10 | help |
| 11 | Fill the pages with poison patterns after free_pages() and verify |
| 12 | the patterns before alloc_pages(). This results in a large slowdown, |
| 13 | but helps to find certain types of memory corruptions. |
| 14 | |
| 15 | This option cannot enalbe with hibernation. Otherwise, it will get |
| 16 | wrong messages for memory corruption because the free pages are not |
| 17 | saved to the suspend image. |