X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2FKconfig;h=3aa819d628c112cc185f9545c7ae5e3fb8a5c310;hb=e20b8cca760ed2a6abcfe37ef56f2306790db648;hp=a7609cbcb00d8ce3fb81f366d7c835af970452e7;hpb=67e74fdd81349a92fcece318a5ee41714273eb01;p=linux-2.6-omap-h63xx.git

diff --git a/mm/Kconfig b/mm/Kconfig
index a7609cbcb00..3aa819d628c 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -37,7 +37,7 @@ config DISCONTIGMEM_MANUAL
 	  in their physical address spaces, and this option provides
 	  more efficient handling of these holes.  However, the vast
 	  majority of hardware has quite flat address spaces, and
-	  can have degraded performance from extra overhead that
+	  can have degraded performance from the extra overhead that
 	  this option imposes.
 
 	  Many NUMA configurations will have this as the only option.
@@ -112,6 +112,18 @@ config SPARSEMEM_EXTREME
 	def_bool y
 	depends on SPARSEMEM && !SPARSEMEM_STATIC
 
+config SPARSEMEM_VMEMMAP_ENABLE
+	def_bool n
+
+config SPARSEMEM_VMEMMAP
+	bool "Sparse Memory virtual memmap"
+	depends on SPARSEMEM && SPARSEMEM_VMEMMAP_ENABLE
+	default y
+	help
+	 SPARSEMEM_VMEMMAP uses a virtually mapped memmap to optimise
+	 pfn_to_page and page_to_pfn operations.  This is the most
+	 efficient option when sufficient kernel resources are available.
+
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
 	bool "Allow for memory hot-add"
@@ -126,6 +138,23 @@ config MEMORY_HOTPLUG_SPARSE
 	def_bool y
 	depends on SPARSEMEM && MEMORY_HOTPLUG
 
+config MEMORY_HOTREMOVE
+	bool "Allow for memory hot remove"
+	depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
+	depends on MIGRATION
+
+#
+# If we have space for more page flags then we can enable additional
+# optimizations and functionality.
+#
+# Regular Sparsemem takes page flag bits for the sectionid if it does not
+# use a virtual memmap. Disable extended page flags for 32 bit platforms
+# that require the use of a sectionid in the page flags.
+#
+config PAGEFLAGS_EXTENDED
+	def_bool y
+	depends on 64BIT || SPARSEMEM_VMEMMAP || !NUMA || !SPARSEMEM
+
 # Heavily threaded applications may benefit from splitting the mm-wide
 # page_table_lock, so that faults on different parts of the user address
 # space can be handled with less contention: split it at this NR_CPUS.
@@ -137,7 +166,6 @@ config SPLIT_PTLOCK_CPUS
 	int
 	default "4096" if ARM && !CPU_CACHE_VIPT
 	default "4096" if PARISC && !PA20
-	default "4096" if XEN
 	default "4"
 
 #
@@ -171,7 +199,7 @@ config BOUNCE
 config NR_QUICK
 	int
 	depends on QUICKLIST
-	default "2" if (SUPERH && !SUPERH64)
+	default "2" if SUPERH
 	default "1"
 
 config VIRT_TO_BUS