/* * linux/include/asm-ia64/topology.h * * Copyright (C) 2002, Erich Focht, NEC * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #ifndef _ASM_IA64_TOPOLOGY_H #define _ASM_IA64_TOPOLOGY_H #include <asm/acpi.h> #include <asm/numa.h> #include <asm/smp.h> #ifdef CONFIG_NUMA /* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */ #define PENALTY_FOR_NODE_WITH_CPUS 255 /* * Distance above which we begin to use zone reclaim */ #define RECLAIM_DISTANCE 15 /* * Returns the number of the node containing CPU 'cpu' */ #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu]) /* * Returns a bitmask of CPUs on Node 'node'. */ #define node_to_cpumask(node) (node_to_cpu_mask[node]) /* * Returns the number of the node containing Node 'nid'. * Not implemented here. Multi-level hierarchies detected with * the help of node_distance(). */ #define parent_node(nid) (nid) /* * Returns the number of the first CPU on Node 'node'. */ #define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node))) /* * Determines the node for a given pci bus */ #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node void build_cpu_to_node_map(void); #define SD_CPU_INIT (struct sched_domain) { \ .span = CPU_MASK_NONE, \ .parent = NULL, \ .child = NULL, \ .groups = NULL, \ .min_interval = 1, \ .max_interval = 4, \ .busy_factor = 64, \ .imbalance_pct = 125, \ .cache_nice_tries = 2, \ .busy_idx = 2, \ .idle_idx = 1, \ .newidle_idx = 2, \ .wake_idx = 1, \ .forkexec_idx = 1, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ | SD_WAKE_AFFINE, \ .last_balance = jiffies, \ .balance_interval = 1, \ .nr_balance_failed = 0, \ } /* sched_domains SD_NODE_INIT for IA64 NUMA machines */ #define SD_NODE_INIT (struct sched_domain) { \ .span = CPU_MASK_NONE, \ .parent = NULL, \ .child = NULL, \ .groups = NULL, \ .min_interval = 8, \ .max_interval = 8*(min(num_online_cpus(), 32)), \ .busy_factor = 64, \ .imbalance_pct = 125, \ .cache_nice_tries = 2, \ .busy_idx = 3, \ .idle_idx = 2, \ .newidle_idx = 2, \ .wake_idx = 1, \ .forkexec_idx = 1, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_EXEC \ | SD_BALANCE_FORK \ | SD_SERIALIZE \ | SD_WAKE_BALANCE, \ .last_balance = jiffies, \ .balance_interval = 64, \ .nr_balance_failed = 0, \ } #endif /* CONFIG_NUMA */ #ifdef CONFIG_SMP #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id) #define topology_core_id(cpu) (cpu_data(cpu)->core_id) #define topology_core_siblings(cpu) (cpu_core_map[cpu]) #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) #define smt_capable() (smp_num_siblings > 1) #endif #define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \ CPU_MASK_ALL : \ node_to_cpumask(pcibus_to_node(bus)) \ ) #include <asm-generic/topology.h> #endif /* _ASM_IA64_TOPOLOGY_H */