diff options
Diffstat (limited to 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index 4b2443254de..957d3da53dd 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -1,10 +1,19 @@ +config PAGE_EXTENSION + bool "Extend memmap on extra space for more information on page" + ---help--- + Extend memmap on extra space for more information on page. This + could be used for debugging features that need to insert extra + field for every page. This extension enables us to save memory + by not allocating this extra memory according to boottime + configuration. + config DEBUG_PAGEALLOC bool "Debug page memory allocations" depends on DEBUG_KERNEL depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC depends on !KMEMCHECK + select PAGE_EXTENSION select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC - select PAGE_GUARD if ARCH_SUPPORTS_DEBUG_PAGEALLOC ---help--- Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types @@ -17,13 +26,5 @@ config DEBUG_PAGEALLOC that would result in incorrect warnings of memory corruption after a resume because free pages are not saved to the suspend image. -config WANT_PAGE_DEBUG_FLAGS - bool - config PAGE_POISONING bool - select WANT_PAGE_DEBUG_FLAGS - -config PAGE_GUARD - bool - select WANT_PAGE_DEBUG_FLAGS |