aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/Kconfig
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2008-07-08 11:59:23 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-08 11:59:23 +0200
commit2b4fa851b2f06fdb04cac808b57324f5e51e1578 (patch)
tree97db3ad5adda7683923630982f68b8b52c86e790 /arch/x86/Kconfig
parent3de352bbd86f890dd0c5e1c09a6a1b0b29e0f8ce (diff)
parent46f68e1c6b04a04772e828ff3bcd07ed708805c2 (diff)
Merge branch 'x86/numa' into x86/devel
Conflicts: arch/x86/Kconfig arch/x86/kernel/e820.c arch/x86/kernel/efi_64.c arch/x86/kernel/mpparse.c arch/x86/kernel/setup.c arch/x86/kernel/setup_32.c arch/x86/mm/init_64.c include/asm-x86/proto.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig35
1 files changed, 31 insertions, 4 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 640dc62a7fa..112afd368c7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -121,7 +121,7 @@ config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
config HAVE_SETUP_PER_CPU_AREA
- def_bool X86_64 || (X86_SMP && !X86_VOYAGER)
+ def_bool X86_64_SMP || (X86_SMP && !X86_VOYAGER)
config HAVE_CPUMASK_OF_CPU_MAP
def_bool X86_64_SMP
@@ -579,7 +579,21 @@ config SWIOTLB
config IOMMU_HELPER
def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB)
+config MAXSMP
+ bool "Configure Maximum number of SMP Processors and NUMA Nodes"
+ depends on X86_64 && SMP
+ default n
+ help
+ Configure maximum number of CPUS and NUMA Nodes for this architecture.
+ If unsure, say N.
+if MAXSMP
+config NR_CPUS
+ int
+ default "4096"
+endif
+
+if !MAXSMP
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
@@ -592,7 +606,8 @@ config NR_CPUS
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
- approximately one kilobyte to the kernel image.
+ approximately eight kilobytes to the kernel image.
+endif
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
@@ -983,13 +998,25 @@ config NUMA_EMU
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
+if MAXSMP
+
+config NODES_SHIFT
+ int
+ default "9"
+endif
+
+if !MAXSMP
config NODES_SHIFT
- int "Max num nodes shift(1-9)"
- range 1 9 if X86_64
+ int "Maximum NUMA Nodes (as a power of 2)"
+ range 1 9 if X86_64
default "6" if X86_64
default "4" if X86_NUMAQ
default "3"
depends on NEED_MULTIPLE_NODES
+ help
+ Specify the maximum number of NUMA Nodes available on the target
+ system. Increases memory reserved to accomodate various tables.
+endif
config HAVE_ARCH_BOOTMEM_NODE
def_bool y