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[IA64] Increase max node count on SN platforms
Add a configuration option to allow the maximum number of nodes to be configurable for GENERIC or SN kernels. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
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2 changed files with 18 additions and 4 deletions
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@ -252,6 +252,15 @@ config NR_CPUS
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than 64 will cause the use of a CPU mask array, causing a small
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performance hit.
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config IA64_NR_NODES
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int "Maximum number of NODEs (256-1024)" if (IA64_SGI_SN2 || IA64_GENERIC)
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range 256 1024
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depends on IA64_SGI_SN2 || IA64_GENERIC
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default "256"
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help
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This option specifies the maximum number of nodes in your SSI system.
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If in doubt, use the default.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
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depends on SMP && EXPERIMENTAL
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@ -3,13 +3,18 @@
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#ifdef CONFIG_IA64_DIG
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/* Max 8 Nodes */
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#define NODES_SHIFT 3
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# define NODES_SHIFT 3
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#elif defined(CONFIG_IA64_HP_ZX1) || defined(CONFIG_IA64_HP_ZX1_SWIOTLB)
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/* Max 32 Nodes */
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#define NODES_SHIFT 5
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# define NODES_SHIFT 5
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#elif defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
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/* Max 256 Nodes */
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#define NODES_SHIFT 8
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# if CONFIG_IA64_NR_NODES == 256
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# define NODES_SHIFT 8
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# elif CONFIG_IA64_NR_NODES <= 512
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# define NODES_SHIFT 9
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# elif CONFIG_IA64_NR_NODES <= 1024
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# define NODES_SHIFT 10
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# endif
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#endif
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#endif /* _ASM_MAX_NUMNODES_H */
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