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83 lines
2.3 KiB
83 lines
2.3 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* This file contains NUMA specific prototypes and definitions. |
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* |
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* 2002/08/05 Erich Focht <[email protected]> |
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* |
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*/ |
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#ifndef _ASM_IA64_NUMA_H |
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#define _ASM_IA64_NUMA_H |
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#ifdef CONFIG_NUMA |
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#include <linux/cache.h> |
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#include <linux/cpumask.h> |
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#include <linux/numa.h> |
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#include <linux/smp.h> |
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#include <linux/threads.h> |
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#include <asm/mmzone.h> |
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extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned; |
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extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned; |
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extern pg_data_t *pgdat_list[MAX_NUMNODES]; |
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/* Stuff below this line could be architecture independent */ |
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extern int num_node_memblks; /* total number of memory chunks */ |
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/* |
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* List of node memory chunks. Filled when parsing SRAT table to |
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* obtain information about memory nodes. |
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*/ |
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struct node_memblk_s { |
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unsigned long start_paddr; |
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unsigned long size; |
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int nid; /* which logical node contains this chunk? */ |
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int bank; /* which mem bank on this node */ |
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}; |
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struct node_cpuid_s { |
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u16 phys_id; /* id << 8 | eid */ |
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int nid; /* logical node containing this CPU */ |
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}; |
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extern struct node_memblk_s node_memblk[NR_NODE_MEMBLKS]; |
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extern struct node_cpuid_s node_cpuid[NR_CPUS]; |
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/* |
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* ACPI 2.0 SLIT (System Locality Information Table) |
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* http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf |
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* |
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* This is a matrix with "distances" between nodes, they should be |
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* proportional to the memory access latency ratios. |
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*/ |
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extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES]; |
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#define slit_distance(from,to) (numa_slit[(from) * MAX_NUMNODES + (to)]) |
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extern int __node_distance(int from, int to); |
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#define node_distance(from,to) __node_distance(from, to) |
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extern int paddr_to_nid(unsigned long paddr); |
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#define local_nodeid (cpu_to_node_map[smp_processor_id()]) |
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#define numa_off 0 |
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extern void map_cpu_to_node(int cpu, int nid); |
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extern void unmap_cpu_from_node(int cpu, int nid); |
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extern void numa_clear_node(int cpu); |
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#else /* !CONFIG_NUMA */ |
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#define map_cpu_to_node(cpu, nid) do{}while(0) |
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#define unmap_cpu_from_node(cpu, nid) do{}while(0) |
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#define paddr_to_nid(addr) 0 |
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#define numa_clear_node(cpu) do { } while (0) |
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#endif /* CONFIG_NUMA */ |
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#endif /* _ASM_IA64_NUMA_H */
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