/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * This file contains NUMA specific prototypes and definitions. * * 2002/08/05 Erich Focht <efocht@ess.nec.de> * */ #ifndef _ASM_IA64_NUMA_H #define _ASM_IA64_NUMA_H #ifdef [31mCONFIG_NUMA[0m #include <linux/cache.h> #include <linux/cpumask.h> #include <linux/numa.h> #include <linux/smp.h> #include <linux/threads.h> #include <asm/mmzone.h> extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned; extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned; extern pg_data_t *pgdat_list[MAX_NUMNODES]; /* Stuff below this line could be architecture independent */ extern int num_node_memblks; /* total number of memory chunks */ /* * List of node memory chunks. Filled when parsing SRAT table to * obtain information about memory nodes. */ struct node_memblk_s { unsigned long start_paddr; unsigned long size; int nid; /* which logical node contains this chunk? */ int bank; /* which mem bank on this node */ }; struct node_cpuid_s { u16 phys_id; /* id << 8 | eid */ int nid; /* logical node containing this CPU */ }; extern struct node_memblk_s node_memblk[NR_NODE_MEMBLKS]; extern struct node_cpuid_s node_cpuid[NR_CPUS]; /* * ACPI 2.0 SLIT (System Locality Information Table) * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf * * This is a matrix with "distances" between nodes, they should be * proportional to the memory access latency ratios. */ extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES]; #define slit_distance(from,to) (numa_slit[(from) * MAX_NUMNODES + (to)]) extern int __node_distance(int from, int to); #define node_distance(from,to) __node_distance(from, to) extern int paddr_to_nid(unsigned long paddr); #define local_nodeid (cpu_to_node_map[smp_processor_id()]) #define numa_off 0 extern void map_cpu_to_node(int cpu, int nid); extern void unmap_cpu_from_node(int cpu, int nid); extern void numa_clear_node(int cpu); #else /* !CONFIG_NUMA */ #define map_cpu_to_node(cpu, nid) do{}while(0) #define unmap_cpu_from_node(cpu, nid) do{}while(0) #define paddr_to_nid(addr) 0 #define numa_clear_node(cpu) do { } while (0) #endif /* CONFIG_NUMA */ #endif /* _ASM_IA64_NUMA_H */ |