| #ifndef _ASM_X86_TOPOLOGY_H |
| #define _ASM_X86_TOPOLOGY_H |
| |
| #ifdef CONFIG_NUMA |
| #include <linux/cpumask.h> |
| #include <asm/mpspec.h> |
| |
| /* Mappings between logical cpu number and node number */ |
| extern int cpu_to_node_map[]; |
| extern cpumask_t node_to_cpumask_map[]; |
| |
| #ifdef CONFIG_ACPI_NUMA |
| extern int __node_distance(int, int); |
| #define node_distance(a,b) __node_distance(a,b) |
| #endif |
| |
| /* Returns the number of the node containing CPU 'cpu' */ |
| static inline int cpu_to_node(int cpu) |
| { |
| return cpu_to_node_map[cpu]; |
| } |
| |
| /* |
| * Returns the number of the node containing Node 'node'. This |
| * architecture is flat, so it is a pretty simple function! |
| */ |
| #define parent_node(node) (node) |
| |
| /* Returns a bitmask of CPUs on Node 'node'. */ |
| static inline cpumask_t node_to_cpumask(int node) |
| { |
| return node_to_cpumask_map[node]; |
| } |
| |
| /* Returns the number of the first CPU on Node 'node'. */ |
| static inline int node_to_first_cpu(int node) |
| { |
| cpumask_t mask = node_to_cpumask(node); |
| |
| return first_cpu(mask); |
| } |
| |
| #define pcibus_to_node(bus) __pcibus_to_node(bus) |
| #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) |
| |
| #define numa_node_id() read_pda(nodenumber) |
| |
| /* sched_domains SD_NODE_INIT for x86_64 machines */ |
| #define SD_NODE_INIT (struct sched_domain) { \ |
| .span = CPU_MASK_NONE, \ |
| .parent = NULL, \ |
| .child = NULL, \ |
| .groups = NULL, \ |
| .min_interval = 8, \ |
| .max_interval = 32, \ |
| .busy_factor = 32, \ |
| .imbalance_pct = 125, \ |
| .cache_nice_tries = 2, \ |
| .busy_idx = 3, \ |
| .idle_idx = 2, \ |
| .newidle_idx = 0, \ |
| .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 = 1, \ |
| .nr_balance_failed = 0, \ |
| } |
| |
| #else /* CONFIG_NUMA */ |
| |
| #include <asm-generic/topology.h> |
| |
| #endif |
| |
| extern cpumask_t cpu_coregroup_map(int cpu); |
| |
| #ifdef CONFIG_SMP |
| #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) |
| #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) |
| #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu)) |
| #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) |
| #define mc_capable() (boot_cpu_data.x86_max_cores > 1) |
| #define smt_capable() (smp_num_siblings > 1) |
| #endif |
| |
| #endif |