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         .min_interval           = 8,                                    \
  43         .max_interval           = 32,                                   \
  44         .busy_factor            = 32,                                   \
  45         .imbalance_pct          = 125,                                  \
  46         .cache_nice_tries       = 1,                                    \
  47         .busy_idx               = 3,                                    \
  48         .idle_idx               = 1,                                    \
  49         .newidle_idx            = 0,                                    \
  50         .wake_idx               = 0,                                    \
  51         .forkexec_idx           = 0,                                    \
  52                                                                         \
  53         .flags                  = 1*SD_LOAD_BALANCE                     \
  54                                 | 1*SD_BALANCE_NEWIDLE                  \
  55                                 | 1*SD_BALANCE_EXEC                     \
  56                                 | 1*SD_BALANCE_FORK                     \
  57                                 | 0*SD_BALANCE_WAKE                     \
  58                                 | 0*SD_WAKE_AFFINE                      \
  59                                 | 0*SD_PREFER_LOCAL                     \
  60                                 | 0*SD_SHARE_CPUPOWER                   \
  61                                 | 0*SD_POWERSAVINGS_BALANCE             \
  62                                 | 0*SD_SHARE_PKG_RESOURCES              \
  63                                 | 1*SD_SERIALIZE                        \
  64                                 | 0*SD_PREFER_SIBLING                   \
  65                                 ,                                       \
  66         .last_balance           = jiffies,                              \
  67         .balance_interval       = 1,                                    \
  68 }
  69
  70 extern void __init dump_numa_cpu_topology(void);
  71
  72 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
  73 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
  74
  75 #else
  76
  77 static inline int of_node_to_nid(struct device_node *device)
  78 {
  79         return 0;
  80 }
  81
  82 static inline void dump_numa_cpu_topology(void) {}
  83
  84 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
  85 {
  86         return 0;
  87 }
  88
  89 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
  90                                                 int nid)
  91 {
  92 }
  93
  94 #endif /* CONFIG_NUMA */
  95
  96 #include <asm-generic/topology.h>
  97
  98 #ifdef CONFIG_SMP
  99 #include <asm/cputable.h>
 100 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
 101
 102 #ifdef CONFIG_PPC64
 103 #include <asm/smp.h>
 104
 105 #define topology_thread_cpumask(cpu)    (&per_cpu(cpu_sibling_map, cpu))
 106 #define topology_core_cpumask(cpu)      (&per_cpu(cpu_core_map, cpu))
 107 #define topology_core_id(cpu)           (cpu_to_core_id(cpu))
 108 #endif
 109 #endif
 110
 111 #endif /* __KERNEL__ */
 112 #endif  /* _ASM_POWERPC_TOPOLOGY_H */