diff options
Diffstat (limited to 'linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig')
| -rw-r--r-- | linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig b/linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig index d1ffcb05d1..dec06cdfd1 100644 --- a/linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig +++ b/linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig @@ -372,6 +372,19 @@ config SMP If you don't know what to do here, say N. +config SMP_ALTERNATIVES + bool "SMP alternatives support (EXPERIMENTAL)" + depends on SMP && EXPERIMENTAL + help + Try to reduce the overhead of running an SMP kernel on a uniprocessor + host slightly by replacing certain key instruction sequences + according to whether we currently have more than one CPU available. + This should provide a noticeable boost to performance when + running SMP kernels on UP machines, and have negligible impact + when running on an true SMP host. + + If unsure, say N. + config NR_CPUS int "Maximum number of CPUs (2-255)" range 2 255 |