X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=mm%2FKconfig;h=a9cb80ae6409df599cc3823a7a072a158c41112c;hb=8fce4d8e3b9e3cf47cc8afeb6077e22ab795d989;hp=ae9ce6b73e8a8351d1a5533349f141bbb5492e3a;hpb=dad2ad82c5f058367df79de022bd12d36afcd065;p=linux-2.6-omap-h63xx.git

diff --git a/mm/Kconfig b/mm/Kconfig
index ae9ce6b73e8..a9cb80ae640 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -11,7 +11,7 @@ choice
 
 config FLATMEM_MANUAL
 	bool "Flat Memory"
-	depends on !ARCH_DISCONTIGMEM_ENABLE || ARCH_FLATMEM_ENABLE
+	depends on !(ARCH_DISCONTIGMEM_ENABLE || ARCH_SPARSEMEM_ENABLE) || ARCH_FLATMEM_ENABLE
 	help
 	  This option allows you to change some of the ways that
 	  Linux manages its memory internally.  Most users will
@@ -125,12 +125,17 @@ comment "Memory hotplug is currently incompatible with Software Suspend"
 # space can be handled with less contention: split it at this NR_CPUS.
 # 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's debug spinlock_t is too large for the 32-bit struct page.
-# ARM26 and SPARC32 and PPC64 may use one page for multiple page tables.
+# PA-RISC 7xxx's spinlock_t would enlarge struct page from 32 to 44 bytes.
 #
 config SPLIT_PTLOCK_CPUS
 	int
 	default "4096" if ARM && !CPU_CACHE_VIPT
-	default "4096" if PARISC && DEBUG_SPINLOCK && !64BIT
-	default "4096" if ARM26 || SPARC32 || PPC64
+	default "4096" if PARISC && !PA20
 	default "4"
+
+#
+# support for page migration
+#
+config MIGRATION
+	def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
+	depends on SWAP