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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-12 01:46:43 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-12 01:46:43 (GMT) |
| commit | 6df1e7f2e96721dfdbfd8a034e52bc81916f978c (patch) | |
| tree | 8567e8dd37a2ebdc5f7670c88e82f2e9d9e725be /arch/x86/Kconfig | |
| parent | d96d8aa261708ecb1536d2733081800e7e15e8f4 (diff) | |
| parent | b53b5eda8194214928c8243d711a75dbf51809fc (diff) | |
| download | linux-6df1e7f2e96721dfdbfd8a034e52bc81916f978c.tar.xz | |
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu changes from Ingo Molnar:
"The biggest change that stands out is the increase of the
CONFIG_NR_CPUS range from 4096 to 8192 - as real hardware out there
already went beyond 4k CPUs ...
We only allow more than 512 CPUs if offstack cpumasks are enabled.
CONFIG_MAXSMP=y remains to be the 'you are nuts!' extreme testcase,
which now means a max of 8192 CPUs"
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Increase max CPU count to 8192
x86/cpu: Allow higher NR_CPUS values
x86/cpu: Always print SMP information in /proc/cpuinfo
x86/cpu: Track legacy CPU model data only on 32-bit kernels
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5cd6eea..e6dde05 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -826,14 +826,16 @@ config MAXSMP config NR_CPUS int "Maximum number of CPUs" if SMP && !MAXSMP range 2 8 if SMP && X86_32 && !X86_BIGSMP - range 2 512 if SMP && !MAXSMP + range 2 512 if SMP && !MAXSMP && !CPUMASK_OFFSTACK + range 2 8192 if SMP && !MAXSMP && CPUMASK_OFFSTACK && X86_64 default "1" if !SMP - default "4096" if MAXSMP + default "8192" if MAXSMP default "32" if SMP && (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000) default "8" if SMP ---help--- This allows you to specify the maximum number of CPUs which this - kernel will support. The maximum supported value is 512 and the + kernel will support. If CPUMASK_OFFSTACK is enabled, the maximum + supported value is 4096, otherwise the maximum value is 512. The minimum value which makes sense is 2. This is purely to save memory - each supported CPU adds |