arch/powerpc/include/asm/topology.h

   1 #ifndef _ASM_POWERPC_TOPOLOGY_H
   2 #define _ASM_POWERPC_TOPOLOGY_H
   3 #ifdef __KERNEL__
   4
   5
   6 struct sys_device;
   7 struct device_node;
   8
   9 #ifdef CONFIG_NUMA
  10
  11 #include <asm/mmzone.h>
  12
  13 static inline int cpu_to_node(int cpu)
  14 {
  15         return numa_cpu_lookup_table[cpu];
  16 }
  17
  18 #define parent_node(node)       (node)
  19
  20 #define cpumask_of_node(node) ((node) == -1 ?                           \
  21                                cpu_all_mask :                           \
  22                                &numa_cpumask_lookup_table[node])
  23
  24 int of_node_to_nid(struct device_node *device);
  25
  26 struct pci_bus;
  27 #ifdef CONFIG_PCI
  28 extern int pcibus_to_node(struct pci_bus *bus);
  29 #else
  30 static inline int pcibus_to_node(struct pci_bus *bus)
  31 {
  32         return -1;
  33 }
  34 #endif
  35
  36 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
  37                                  cpu_all_mask :                         \
  38                                  cpumask_of_node(pcibus_to_node(bus)))
  39
  40 /* sched_domains SD_NODE_INIT for PPC64 machines */
  41 #define SD_NODE_INIT (struct sched_domain) {            \
  42         .parent                 = NULL,                 \
  43         .child                  = NULL,                 \
  44         .groups                 = NULL,                 \
  45         .min_interval           = 8,                    \
  46         .max_interval           = 32,                   \
  47         .busy_factor            = 32,                   \
  48         .imbalance_pct          = 125,                  \
  49         .cache_nice_tries       = 1,                    \
  50         .busy_idx               = 3,                    \
  51         .idle_idx               = 1,                    \
  52         .newidle_idx            = 0,                    \
  53         .wake_idx               = 0,                    \
  54         .flags                  = SD_LOAD_BALANCE       \
  55                                 | SD_BALANCE_EXEC       \
  56                                 | SD_BALANCE_FORK       \
  57                                 | SD_BALANCE_NEWIDLE    \
  58                                 | SD_SERIALIZE,         \
  59         .last_balance           = jiffies,              \
  60         .balance_interval       = 1,                    \
  61         .nr_balance_failed      = 0,                    \
  62 }
  63
  64 extern void __init dump_numa_cpu_topology(void);
  65
  66 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
  67 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
  68
  69 #else
  70
  71 static inline int of_node_to_nid(struct device_node *device)
  72 {
  73         return 0;
  74 }
  75
  76 static inline void dump_numa_cpu_topology(void) {}
  77
  78 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
  79 {
  80         return 0;
  81 }
  82
  83 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
  84                                                 int nid)
  85 {
  86 }
  87
  88 #endif /* CONFIG_NUMA */
  89
  90 #include <asm-generic/topology.h>
  91
  92 #ifdef CONFIG_SMP
  93 #include <asm/cputable.h>
  94 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
  95
  96 #ifdef CONFIG_PPC64
  97 #include <asm/smp.h>
  98
  99 #define topology_thread_cpumask(cpu)    (&per_cpu(cpu_sibling_map, cpu))
 100 #define topology_core_cpumask(cpu)      (&per_cpu(cpu_core_map, cpu))
 101 #define topology_core_id(cpu)           (cpu_to_core_id(cpu))
 102 #endif
 103 #endif
 104
 105 #endif /* __KERNEL__ */
 106 #endif  /* _ASM_POWERPC_TOPOLOGY_H */