[patch 1/4] ia64 SPARSEMEM - Kconfig and Makefile

[patch 1/4] ia64 SPARSEMEM - Kconfig and Makefile

[Bob Picco]

The patch modifies the Kconfig file to introduce the new memory model
options and other related SPARSEMEM changes. There is also a minor change
in the Makefile.

Signed-off-by: Bob Picco <bob.picco@hp.com>


 Kconfig     |  112 ++++++++++++++++++++++++++++++++++++++++--------------------
 mm/Makefile |    5 +-
 2 files changed, 78 insertions(+), 39 deletions(-)


Index: linux-2.6.12-rc4-mm2-broken/arch/ia64/Kconfig
=================================--- linux-2.6.12-rc4-mm2-broken.orig/arch/ia64/Kconfig	2005-05-17 14:24:17.000000000 -0400
+++ linux-2.6.12-rc4-mm2-broken/arch/ia64/Kconfig	2005-05-19 09:35:34.000000000 -0400
@@ -169,40 +169,6 @@ config IA64_L1_CACHE_SHIFT
 	default "6" if ITANIUM
 
 # align cache-sensitive data to 64 bytes
-config NUMA
-	bool "NUMA support"
-	depends on !IA64_HP_SIM
-	default y if IA64_SGI_SN2
-	select ACPI_NUMA
-	help
-	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
-	  Access).  This option is for configuring high-end multiprocessor
-	  server systems.  If in doubt, say N.
-
-config VIRTUAL_MEM_MAP
-	bool "Virtual mem map"
-	default y if !IA64_HP_SIM
-	help
-	  Say Y to compile the kernel with support for a virtual mem map.
-	  This code also only takes effect if a memory hole of greater than
-	  1 Gb is found during boot.  You must turn this option on if you
-	  require the DISCONTIGMEM option for your machine. If you are
-	  unsure, say Y.
-
-config HOLES_IN_ZONE
-	bool
-	default y if VIRTUAL_MEM_MAP
-
-config ARCH_DISCONTIGMEM_ENABLE
-	bool "Discontiguous memory support"
-	depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
-	default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
-	help
-	  Say Y to support efficient handling of discontiguous physical memory,
-	  for architectures which are either NUMA (Non-Uniform Memory Access)
-	  or have huge holes in the physical address space for other reasons.
-	  See <file:Documentation/vm/numa> for more.
-
 config IA64_CYCLONE
 	bool "Cyclone (EXA) Time Source support"
 	help
@@ -232,8 +198,10 @@ config IA64_SGI_SN_XP
 	  based on a network adapter and DMA messaging.
 
 config FORCE_MAX_ZONEORDER
-	int
-	default "18"
+	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
+	range 11 17  if !HUGETLB_PAGE
+	default "17" if HUGETLB_PAGE
+	default "11"
 
 config SMP
 	bool "Symmetric multi-processing support"
@@ -296,8 +264,80 @@ config PREEMPT
           Say Y here if you are building a kernel for a desktop, embedded
           or real-time system.  Say N if you are unsure.
 
+config ARCH_SELECT_MEMORY_MODEL
+	def_bool y
+
+config ARCH_FLATMEM_ENABLE
+       def_bool y
+
+config ARCH_DISCONTIGMEM_ENABLE
+	def_bool y
+	depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
+	help
+	  Say Y to support efficient handling of discontiguous physical memory,
+	  for architectures which are either NUMA (Non-Uniform Memory Access)
+	  or have huge holes in the physical address space for other reasons.
+ 	  See <file:Documentation/vm/numa> for more.
+
+config ARCH_DISCONTIGMEM_DEFAULT
+	def_bool y
+	depends on ARCH_DISCONTIGMEM_ENABLE
+
+config ARCH_FLATMEM_ENABLE
+	def_bool y
+
+config ARCH_SPARSEMEM_ENABLE
+	def_bool y
+	depends on ARCH_DISCONTIGMEM_ENABLE
+
 source "mm/Kconfig"
 
+config NUMA
+	bool "NUMA support"
+	depends on !IA64_HP_SIM && !FLATMEM
+	default y if IA64_SGI_SN2
+	help
+	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
+	  Access).  This option is for configuring high-end multiprocessor
+	  server systems.  If in doubt, say N.
+
+config VIRTUAL_MEM_MAP
+	bool "Virtual mem map"
+	depends on !SPARSEMEM
+	default y if !IA64_HP_SIM
+	help
+	  Say Y to compile the kernel with support for a virtual mem map.
+	  This code also only takes effect if a memory hole of greater than
+	  1 Gb is found during boot.  You must turn this option on if you
+	  require the DISCONTIGMEM option for your machine. If you are
+	  unsure, say Y.
+
+config HOLES_IN_ZONE
+	bool
+	default y if VIRTUAL_MEM_MAP
+
+config HAVE_ARCH_EARLY_PFN_TO_NID
+	def_bool y
+	depends on NEED_MULTIPLE_NODES
+
+config SECTION_BITS
+	int
+	depends on SPARSEMEM
+	range 28 32	if !HUGETLB_PAGE
+	default "32"	if HUGETLB_PAGE
+	default	"28"
+	help
+	  Size of memory section in bits.
+
+config PHYSICAL_MEMORY_BITS
+	int
+	depends on SPARSEMEM
+	range 44 50
+	default 44
+	help
+	  Maximum physical memory address bits.
+
+
 config HAVE_DEC_LOCK
 	bool
 	depends on (SMP || PREEMPT)
Index: linux-2.6.12-rc4-mm2-broken/arch/ia64/mm/Makefile
=================================--- linux-2.6.12-rc4-mm2-broken.orig/arch/ia64/mm/Makefile	2004-12-24 16:34:30.000000000 -0500
+++ linux-2.6.12-rc4-mm2-broken/arch/ia64/mm/Makefile	2005-05-18 12:37:46.000000000 -0400
@@ -7,6 +7,5 @@ obj-y := init.o fault.o tlb.o extable.o
 obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
 obj-$(CONFIG_NUMA)	   += numa.o
 obj-$(CONFIG_DISCONTIGMEM) += discontig.o
-ifndef CONFIG_DISCONTIGMEM
-obj-y += contig.o
-endif
+obj-$(CONFIG_SPARSEMEM)	   += discontig.o
+obj-$(CONFIG_FLATMEM)	   += contig.o