include/asm-powerpc/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 static inline cpumask_t node_to_cpumask(int node)
  21 {
  22         return numa_cpumask_lookup_table[node];
  23 }
  24
  25 static inline int node_to_first_cpu(int node)
  26 {
  27         cpumask_t tmp;
  28         tmp = node_to_cpumask(node);
  29         return first_cpu(tmp);
  30 }
  31
  32 int of_node_to_nid(struct device_node *device);
  33
  34 #define pcibus_to_node(node)    (-1)
  35 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  36
  37 /* sched_domains SD_NODE_INIT for PPC64 machines */
  38 #define SD_NODE_INIT (struct sched_domain) {            \
  39         .span                   = CPU_MASK_NONE,        \
  40         .parent                 = NULL,                 \
  41         .groups                 = NULL,                 \
  42         .min_interval           = 8,                    \
  43         .max_interval           = 32,                   \
  44         .busy_factor            = 32,                   \
  45         .imbalance_pct          = 125,                  \
  46         .cache_nice_tries       = 1,                    \
  47         .per_cpu_gain           = 100,                  \
  48         .busy_idx               = 3,                    \
  49         .idle_idx               = 1,                    \
  50         .newidle_idx            = 2,                    \
  51         .wake_idx               = 1,                    \
  52         .flags                  = SD_LOAD_BALANCE       \
  53                                 | SD_BALANCE_EXEC       \
  54                                 | SD_BALANCE_NEWIDLE    \
  55                                 | SD_WAKE_IDLE          \
  56                                 | SD_WAKE_BALANCE,      \
  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
  87 #include <asm-generic/topology.h>
  88
  89 #endif /* CONFIG_NUMA */
  90
  91 #endif /* __KERNEL__ */
  92 #endif  /* _ASM_POWERPC_TOPOLOGY_H */