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| author | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:15 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:59 +0200 |
| commit | 07f9479a40cc778bc1462ada11f95b01360ae4ff (patch) | |
| tree | 0676cf38df3844004bb3ebfd99dfa67a4a8998f5 /mm/Kconfig.debug | |
| parent | ath9k_hw: don't touch with treewide double semicolon removal (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecr... (diff) | |
| download | linux-07f9479a40cc778bc1462ada11f95b01360ae4ff.tar.xz linux-07f9479a40cc778bc1462ada11f95b01360ae4ff.zip | |
Merge branch 'master' into for-next
Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.
Diffstat (limited to 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index af7cfb43d2f0..8b1a477162dc 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -1,27 +1,24 @@ config DEBUG_PAGEALLOC bool "Debug page memory allocations" - depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC - depends on !HIBERNATION || !PPC && !SPARC + depends on DEBUG_KERNEL + depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC depends on !KMEMCHECK + select PAGE_POISONING 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 of memory corruption. + For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC, + fill the pages with poison patterns after free_pages() and verify + the patterns before alloc_pages(). Additionally, + this option cannot be enabled in combination with hibernation as + 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 "Debug page memory allocations" - depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC - depends on !HIBERNATION - select DEBUG_PAGEALLOC + bool select WANT_PAGE_DEBUG_FLAGS - ---help--- - Fill the pages with poison patterns after free_pages() and verify - the patterns before alloc_pages(). This results in a large slowdown, - but helps to find certain types of memory corruption. - - This option cannot be enabled in combination with hibernation as - that would result in incorrect warnings of memory corruption after - a resume because free pages are not saved to the suspend image. |