mirror of https://gitee.com/openkylin/linux.git
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>
This commit is contained in:
parent
f8096f92b8
commit
c3ed64295f
|
@ -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"
|
||||
|
|
Loading…
Reference in New Issue