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authorMike Travis <travis@sgi.com>2008-05-16 10:44:39 -0700
committerThomas Gleixner <tglx@linutronix.de>2008-05-23 00:12:28 +0200
commitc3ed64295f0fed9131b42122234b1ce4a4a266cf (patch)
tree57030f9141b563cbe77a49fcb20ff785af9c0fed /arch/x86/Kconfig
parentf8096f92b87d81c55ed63964d27baa9ce5ffe508 (diff)
x86: change maximum NR_CPUS to 4096 and MAX_NUMNODES to 512
* Change the range of NR_CPUS from 2-255 to 2-4096 and change the range of MAX_NUMNODES (NODES_SHIFT) from 1-32768 to 1-512. * Alter comment about how much each increment of NR_CPUS consumes. (This was found by configuring for 256 cpus and then 512 cpus and dividing the difference by 256.) Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig12
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fe361ae7ef2..bbafeac8911 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -565,18 +565,18 @@ config IOMMU_HELPER
def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB)
config NR_CPUS
- int "Maximum number of CPUs (2-255)"
- range 2 255
+ int "Maximum number of CPUs (2-4096)"
+ range 2 4096
depends on SMP
default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
default "8"
help
This allows you to specify the maximum number of CPUs which this
- kernel will support. The maximum supported value is 255 and the
+ kernel will support. The maximum supported value is 4096 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
- approximately eight kilobytes to the kernel image.
+ approximately one kilobyte to the kernel image.
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
@@ -968,8 +968,8 @@ config NUMA_EMU
number of nodes. This is only useful for debugging.
config NODES_SHIFT
- int "Max num nodes shift(1-15)"
- range 1 15 if X86_64
+ int "Max num nodes shift(1-9)"
+ range 1 9 if X86_64
default "6" if X86_64
default "4" if X86_NUMAQ
default "3"