Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 98a0ed52b5c39ec9d728d89c557353f97f986a32..249d1e0824b523e0a1e51a613a86a497649cc089 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -247,6 +247,28 @@ config X86_HAS_BOOT_CPU_ID
        def_bool y
        depends on X86_VOYAGER
 
+config SPARSE_IRQ
+       bool "Support sparse irq numbering"
+       depends on PCI_MSI || HT_IRQ
+       help
+         This enables support for sparse irqs. This is useful for distro
+         kernels that want to define a high CONFIG_NR_CPUS value but still
+         want to have low kernel memory footprint on smaller machines.
+
+         ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
+           out the irq_desc[] array in a more NUMA-friendly way. )
+
+         If you don't know what to do here, say N.
+
+config NUMA_MIGRATE_IRQ_DESC
+       bool "Move irq desc when changing irq smp_affinity"
+       depends on SPARSE_IRQ && NUMA
+       default n
+       help
+         This enables moving irq_desc to cpu/node that irq will use handled.
+
+         If you don't know what to do here, say N.
+
 config X86_FIND_SMP_CONFIG
        def_bool y
        depends on X86_MPPARSE || X86_VOYAGER
@@ -479,7 +501,7 @@ config HPET_TIMER
          The HPET provides a stable time base on SMP
          systems, unlike the TSC, but it is more expensive to access,
          as it is off-chip.  You can find the HPET spec at
-         <http://www.intel.com/hardwaredesign/hpetspec.htm>.
+         <http://www.intel.com/hardwaredesign/hpetspec_1.pdf>.
 
          You can safely choose Y here.  However, HPET will only be
          activated if the platform and the BIOS support this feature.
@@ -579,19 +601,20 @@ config IOMMU_HELPER
 
 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 "1" if !SMP
        default "4096" if MAXSMP
-       default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
-       default "8"
+       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