include/asm-powerpc/topology.h

   1 #ifndef _ASM_POWERPC_TOPOLOGY_H
   2 #define _ASM_POWERPC_TOPOLOGY_H
   3 #ifdef __KERNEL__
   4
   5 #include <linux/config.h>
   6
   7 struct sys_device;
   8 struct device_node;
   9
  10 #ifdef CONFIG_NUMA
  11
  12 #include <asm/mmzone.h>
  13
  14 static inline int cpu_to_node(int cpu)
  15 {
  16         return numa_cpu_lookup_table[cpu];
  17 }
  18
  19 #define parent_node(node)       (node)
  20
  21 static inline cpumask_t node_to_cpumask(int node)
  22 {
  23         return numa_cpumask_lookup_table[node];
  24 }
  25
  26 static inline int node_to_first_cpu(int node)
  27 {
  28         cpumask_t tmp;
  29         tmp = node_to_cpumask(node);
  30         return first_cpu(tmp);
  31 }
  32
  33 int of_node_to_nid(struct device_node *device);
  34
  35 #define pcibus_to_node(node)    (-1)
  36 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  37
  38 /* sched_domains SD_NODE_INIT for PPC64 machines */
  39 #define SD_NODE_INIT (struct sched_domain) {            \
  40         .span                   = CPU_MASK_NONE,        \
  41         .parent                 = 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         .per_cpu_gain           = 100,                  \
  49         .busy_idx               = 3,                    \
  50         .idle_idx               = 1,                    \
  51         .newidle_idx            = 2,                    \
  52         .wake_idx               = 1,                    \
  53         .flags                  = SD_LOAD_BALANCE       \
  54                                 | SD_BALANCE_EXEC       \
  55                                 | SD_BALANCE_NEWIDLE    \
  56                                 | SD_WAKE_IDLE          \
  57                                 | SD_WAKE_BALANCE,      \
  58         .last_balance           = jiffies,              \
  59         .balance_interval       = 1,                    \
  60         .nr_balance_failed      = 0,                    \
  61 }
  62
  63 extern void __init dump_numa_cpu_topology(void);
  64
  65 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
  66 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
  67
  68 #else
  69
  70 static inline int of_node_to_nid(struct device_node *device)
  71 {
  72         return 0;
  73 }
  74
  75 static inline void dump_numa_cpu_topology(void) {}
  76
  77 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
  78 {
  79         return 0;
  80 }
  81
  82 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
  83                                                 int nid)
  84 {
  85 }
  86
  87
  88 #include <asm-generic/topology.h>
  89
  90 #endif /* CONFIG_NUMA */
  91
  92 #endif /* __KERNEL__ */
  93 #endif  /* _ASM_POWERPC_TOPOLOGY_H */