x86: enable MAXSMP
Impact: activates new off-stack cpumask code on MAXSMP (non-default) x86 configs
Set MAXSMP to enable CONFIG_CPUMASK_OFFSTACK which moves cpumask's off
the stack (and in structs) when using cpumask_var_t.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hy>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d99eeb7..1fd4435 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -591,16 +591,17 @@
config MAXSMP
bool "Configure Maximum number of SMP Processors and NUMA Nodes"
- depends on X86_64 && SMP && BROKEN
+ depends on X86_64 && SMP && DEBUG_KERNEL && EXPERIMENTAL
+ select CPUMASK_OFFSTACK
default n
help
Configure maximum number of CPUS and NUMA Nodes for this architecture.
If unsure, say N.
config NR_CPUS
- int "Maximum number of CPUs (2-512)" if !MAXSMP
- range 2 512
depends on SMP
+ int "Maximum number of CPUs" if SMP && !MAXSMP
+ range 2 512 if SMP && !MAXSMP
default "4096" if MAXSMP
default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
default "8"