X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=mm%2FKconfig;h=9c61158308dc910cfad4fdaca71c5a0b4e42b87d;hb=1f0ce8b3dd667dca720a47869f8110c298f0e5b8;hp=77b4980d61430ac9d9f731a88fb6b1ecd65cbcd6;hpb=af8e3354b4bbd1ee5a3a55d11a5e1fe37e77f0ba;p=safe%2Fjmp%2Flinux-2.6 diff --git a/mm/Kconfig b/mm/Kconfig index 77b4980..9c61158 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -115,6 +115,10 @@ config SPARSEMEM_EXTREME config SPARSEMEM_VMEMMAP_ENABLE bool +config SPARSEMEM_ALLOC_MEM_MAP_TOGETHER + def_bool y + depends on SPARSEMEM && X86_64 + config SPARSEMEM_VMEMMAP bool "Sparse Memory virtual memmap" depends on SPARSEMEM && SPARSEMEM_VMEMMAP_ENABLE @@ -158,11 +162,13 @@ 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" # @@ -193,7 +199,7 @@ config BOUNCE config NR_QUICK int depends on QUICKLIST - default "2" if SUPERH || AVR32 + default "2" if AVR32 default "1" config VIRT_TO_BUS @@ -210,7 +216,7 @@ 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 @@ -219,6 +225,7 @@ 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 @@ -249,8 +256,9 @@ 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"