diff options
| author | Mike Travis <travis@sgi.com> | 2008-05-16 10:44:39 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 00:12:28 +0200 |
| commit | c3ed64295f0fed9131b42122234b1ce4a4a266cf (patch) | |
| tree | 57030f9141b563cbe77a49fcb20ff785af9c0fed /arch | |
| parent | f8096f92b87d81c55ed63964d27baa9ce5ffe508 (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')
| -rw-r--r-- | arch/x86/Kconfig | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fe361ae7ef2f..bbafeac89116 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" |