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authorKeith Mannthey <kmannth@us.ibm.com>2006-09-30 23:27:05 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:18 -0700
commitec69acbb1191df671ff8e07c8e146619a5c53f70 (patch)
tree431aea50c8b614686543342c114ce36465b9dbc2
parentf28c5edc06ecd8068b38b7662ad19f4d20d741af (diff)
downloadlinux-linaro-stable-ec69acbb1191df671ff8e07c8e146619a5c53f70.tar.gz
[PATCH] hot-add-mem x86_64: Kconfig changes
Create Kconfig namespace for MEMORY_HOTPLUG_RESERVE and MEMORY_HOTPLUG_SPARSE. This is needed to create a disticiton between the 2 paths. Selecting the high level opiton of MEMORY_HOTPLUG will get you MEMORY_HOTPLUG_SPARSE if you have sparsemem enabled or MEMORY_HOTPLUG_RESERVE if you are x86_64 with discontig and ACPI numa support. Signed-off-by: Keith Mannthey <kmannth@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/x86_64/Kconfig4
-rw-r--r--mm/Kconfig7
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 32ae1378f35c..b87a19f0d584 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -367,6 +367,10 @@ config ARCH_FLATMEM_ENABLE
source "mm/Kconfig"
+config MEMORY_HOTPLUG_RESERVE
+ def_bool y
+ depends on (MEMORY_HOTPLUG && DISCONTIGMEM)
+
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NUMA
diff --git a/mm/Kconfig b/mm/Kconfig
index 8f5b45615f7b..5d88489ef2de 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -115,12 +115,17 @@ config SPARSEMEM_EXTREME
# eventually, we can have this option just 'select SPARSEMEM'
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
- depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
+ depends on SPARSEMEM || X86_64_ACPI_NUMA
+ depends on HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
depends on (IA64 || X86 || PPC64)
comment "Memory hotplug is currently incompatible with Software Suspend"
depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND
+config MEMORY_HOTPLUG_SPARSE
+ def_bool y
+ depends on SPARSEMEM && MEMORY_HOTPLUG
+
# 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.