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[IA64] Increase max node count on SN platforms

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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>
This commit is contained in:
Jack Steiner 2006-03-02 16:02:21 -06:00 committed by Tony Luck
parent f90aa8c4fe
commit b354a83888
2 changed files with 18 additions and 4 deletions
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9
arch/ia64/Kconfig
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@ -252,6 +252,15 @@ config NR_CPUS
than 64 will cause the use of a CPU mask array, causing a small
performance hit.
config IA64_NR_NODES
int "Maximum number of NODEs (256-1024)" if (IA64_SGI_SN2 || IA64_GENERIC)
range 256 1024
depends on IA64_SGI_SN2 || IA64_GENERIC
default "256"
help
This option specifies the maximum number of nodes in your SSI system.
If in doubt, use the default.
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
depends on SMP && EXPERIMENTAL

13
include/asm-ia64/numnodes.h
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@ -3,13 +3,18 @@
#ifdef CONFIG_IA64_DIG
/* Max 8 Nodes */
#define NODES_SHIFT 3
# define NODES_SHIFT 3
#elif defined(CONFIG_IA64_HP_ZX1) || defined(CONFIG_IA64_HP_ZX1_SWIOTLB)
/* Max 32 Nodes */
#define NODES_SHIFT 5
# define NODES_SHIFT 5
#elif defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
/* Max 256 Nodes */
#define NODES_SHIFT 8
# if CONFIG_IA64_NR_NODES == 256
# define NODES_SHIFT 8
# elif CONFIG_IA64_NR_NODES <= 512
# define NODES_SHIFT 9
# elif CONFIG_IA64_NR_NODES <= 1024
# define NODES_SHIFT 10
# endif
#endif
#endif /* _ASM_MAX_NUMNODES_H */