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 /* Map the K8 CPU local memory controllers to a simple 1:1 CPU:NODE topology */
  11
  12 extern cpumask_t cpu_online_map;
  13
  14 extern unsigned char cpu_to_node[];
  15 extern cpumask_t     node_to_cpumask[];
  16
  17 #ifdef CONFIG_ACPI_NUMA
  18 extern int __node_distance(int, int);
  19 #define node_distance(a,b) __node_distance(a,b)
  20 /* #else fallback version */
  21 #endif
  22
  23 #define cpu_to_node(cpu)                (cpu_to_node[cpu])
  24 #define parent_node(node)               (node)
  25 #define node_to_first_cpu(node)         (first_cpu(node_to_cpumask[node]))
  26 #define node_to_cpumask(node)           (node_to_cpumask[node])
  27 #define pcibus_to_node(bus)             ((long)(bus->sysdata))
  28 #define pcibus_to_cpumask(bus)          node_to_cpumask(pcibus_to_node(bus));
  29
  30 #define numa_node_id()                  read_pda(nodenumber)
  31
  32 /* sched_domains SD_NODE_INIT for x86_64 machines */
  33 #define SD_NODE_INIT (struct sched_domain) {            \
  34         .span                   = CPU_MASK_NONE,        \
  35         .parent                 = NULL,                 \
  36         .groups                 = NULL,                 \
  37         .min_interval           = 8,                    \
  38         .max_interval           = 32,                   \
  39         .busy_factor            = 32,                   \
  40         .imbalance_pct          = 125,                  \
  41         .cache_nice_tries       = 2,                    \
  42         .busy_idx               = 3,                    \
  43         .idle_idx               = 2,                    \
  44         .newidle_idx            = 0,                    \
  45         .wake_idx               = 1,                    \
  46         .forkexec_idx           = 1,                    \
  47         .per_cpu_gain           = 100,                  \
  48         .flags                  = SD_LOAD_BALANCE       \
  49                                 | SD_BALANCE_FORK       \
  50                                 | SD_BALANCE_EXEC       \
  51                                 | SD_WAKE_BALANCE,      \
  52         .last_balance           = jiffies,              \
  53         .balance_interval       = 1,                    \
  54         .nr_balance_failed      = 0,                    \
  55 }
  56
  57 #endif
  58
  59 #ifdef CONFIG_SMP
  60 #define topology_physical_package_id(cpu)                               \
  61         (phys_proc_id[cpu] == BAD_APICID ? -1 : phys_proc_id[cpu])
  62 #define topology_core_id(cpu)                                           \
  63         (cpu_core_id[cpu] == BAD_APICID ? 0 : cpu_core_id[cpu])
  64 #define topology_core_siblings(cpu)             (cpu_core_map[cpu])
  65 #define topology_thread_siblings(cpu)           (cpu_sibling_map[cpu])
  66 #endif
  67
  68 #include <asm-generic/topology.h>
  69
  70 extern cpumask_t cpu_coregroup_map(int cpu);
  71
  72 #endif