include/asm-x86_64/topology.h

   1 #ifndef _ASM_X86_64_TOPOLOGY_H
   2 #define _ASM_X86_64_TOPOLOGY_H
   3
   4
   5 #ifdef CONFIG_NUMA
   6
   7 #include <asm/mpspec.h>
   8 #include <asm/bitops.h>
   9
  10 extern cpumask_t cpu_online_map;
  11
  12 extern unsigned char cpu_to_node[];
  13 extern cpumask_t     node_to_cpumask[];
  14
  15 #ifdef CONFIG_ACPI_NUMA
  16 extern int __node_distance(int, int);
  17 #define node_distance(a,b) __node_distance(a,b)
  18 /* #else fallback version */
  19 #endif
  20
  21 #define cpu_to_node(cpu)                (cpu_to_node[cpu])
  22 #define parent_node(node)               (node)
  23 #define node_to_first_cpu(node)         (first_cpu(node_to_cpumask[node]))
  24 #define node_to_cpumask(node)           (node_to_cpumask[node])
  25 #define pcibus_to_node(bus)             ((long)(bus->sysdata))
  26 #define pcibus_to_cpumask(bus)          node_to_cpumask(pcibus_to_node(bus));
  27
  28 #define numa_node_id()                  read_pda(nodenumber)
  29
  30 /* sched_domains SD_NODE_INIT for x86_64 machines */
  31 #define SD_NODE_INIT (struct sched_domain) {            \
  32         .span                   = CPU_MASK_NONE,        \
  33         .parent                 = NULL,                 \
  34         .child                  = NULL,                 \
  35         .groups                 = NULL,                 \
  36         .min_interval           = 8,                    \
  37         .max_interval           = 32,                   \
  38         .busy_factor            = 32,                   \
  39         .imbalance_pct          = 125,                  \
  40         .cache_nice_tries       = 2,                    \
  41         .busy_idx               = 3,                    \
  42         .idle_idx               = 2,                    \
  43         .newidle_idx            = 0,                    \
  44         .wake_idx               = 1,                    \
  45         .forkexec_idx           = 1,                    \
  46         .per_cpu_gain           = 100,                  \
  47         .flags                  = SD_LOAD_BALANCE       \
  48                                 | SD_BALANCE_FORK       \
  49                                 | SD_BALANCE_EXEC       \
  50                                 | SD_WAKE_BALANCE,      \
  51         .last_balance           = jiffies,              \
  52         .balance_interval       = 1,                    \
  53         .nr_balance_failed      = 0,                    \
  54 }
  55
  56 #endif
  57
  58 #ifdef CONFIG_SMP
  59 #define topology_physical_package_id(cpu)       (cpu_data[cpu].phys_proc_id)
  60 #define topology_core_id(cpu)                   (cpu_data[cpu].cpu_core_id)
  61 #define topology_core_siblings(cpu)             (cpu_core_map[cpu])
  62 #define topology_thread_siblings(cpu)           (cpu_sibling_map[cpu])
  63 #define mc_capable()                    (boot_cpu_data.x86_max_cores > 1)
  64 #define smt_capable()                   (smp_num_siblings > 1)
  65 #endif
  66
  67 #include <asm-generic/topology.h>
  68
  69 extern cpumask_t cpu_coregroup_map(int cpu);
  70
  71 #endif