diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 44cf6f0a3a6d..17b8947aa7da 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -158,11 +158,13 @@ config PAGEFLAGS_EXTENDED # Default to 4 for wider testing, though 8 might be more appropriate. # ARM's adjust_pte (unused if VIPT) depends on mm-wide page_table_lock. # PA-RISC 7xxx's spinlock_t would enlarge struct page from 32 to 44 bytes. +# DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC spinlock_t also enlarge struct page. # config SPLIT_PTLOCK_CPUS int - default "4096" if ARM && !CPU_CACHE_VIPT - default "4096" if PARISC && !PA20 + default "999999" if ARM && !CPU_CACHE_VIPT + default "999999" if PARISC && !PA20 + default "999999" if DEBUG_SPINLOCK || DEBUG_LOCK_ALLOC default "4" # @@ -200,14 +202,6 @@ config VIRT_TO_BUS def_bool y depends on !ARCH_NO_VIRT_TO_BUS -config HAVE_MLOCK - bool - default y if MMU=y - -config HAVE_MLOCKED_PAGE_BIT - bool - default y if HAVE_MLOCK=y - config MMU_NOTIFIER bool @@ -218,7 +212,7 @@ config KSM Enable Kernel Samepage Merging: KSM periodically scans those areas of an application's address space that an app has advised may be mergeable. When it finds pages of identical content, it replaces - the many instances by a single resident page with that content, so + the many instances by a single page with that content, so saving memory until one or another app needs to modify the content. Recommended for use with KVM, or with other duplicative applications. See Documentation/vm/ksm.txt for more information: KSM is inactive @@ -227,6 +221,7 @@ config KSM config DEFAULT_MMAP_MIN_ADDR int "Low address space to protect from user allocation" + depends on MMU default 4096 help This is the portion of low virtual memory which should be protected @@ -257,8 +252,9 @@ config MEMORY_FAILURE special hardware support and typically ECC memory. config HWPOISON_INJECT - tristate "Poison pages injector" - depends on MEMORY_FAILURE && DEBUG_KERNEL + tristate "HWPoison pages injector" + depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS + select PROC_PAGE_MONITOR config NOMMU_INITIAL_TRIM_EXCESS int "Turn on mmap() excess space trimming before booting" |