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