projects / linux-block.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 | |
| 9 | of memory corruptions. | |
| 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 | |
| 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 corruptions. | |
| 24 | ||
| 25 | This option cannot enalbe with hibernation. Otherwise, it will get | |
| 26 | wrong messages for memory corruption because the free pages are not | |
| 27 | saved to the suspend image. |