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 #ifdef CONFIG_NUMA
   8
   9 #include <asm/mmzone.h>
  10
  11 static inline int cpu_to_node(int cpu)
  12 {
  13         return numa_cpu_lookup_table[cpu];
  14 }
  15
  16 #define parent_node(node)       (node)
  17
  18 static inline cpumask_t node_to_cpumask(int node)
  19 {
  20         return numa_cpumask_lookup_table[node];
  21 }
  22
  23 static inline int node_to_first_cpu(int node)
  24 {
  25         cpumask_t tmp;
  26         tmp = node_to_cpumask(node);
  27         return first_cpu(tmp);
  28 }
  29
  30 #define pcibus_to_node(node)    (-1)
  31 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  32
  33 /* sched_domains SD_NODE_INIT for PPC64 machines */
  34 #define SD_NODE_INIT (struct sched_domain) {            \
  35         .span                   = CPU_MASK_NONE,        \
  36         .parent                 = NULL,                 \
  37         .groups                 = NULL,                 \
  38         .min_interval           = 8,                    \
  39         .max_interval           = 32,                   \
  40         .busy_factor            = 32,                   \
  41         .imbalance_pct          = 125,                  \
  42         .cache_nice_tries       = 1,                    \
  43         .per_cpu_gain           = 100,                  \
  44         .busy_idx               = 3,                    \
  45         .idle_idx               = 1,                    \
  46         .newidle_idx            = 2,                    \
  47         .wake_idx               = 1,                    \
  48         .flags                  = SD_LOAD_BALANCE       \
  49                                 | SD_BALANCE_EXEC       \
  50                                 | SD_BALANCE_NEWIDLE    \
  51                                 | SD_WAKE_IDLE          \
  52                                 | SD_WAKE_BALANCE,      \
  53         .last_balance           = jiffies,              \
  54         .balance_interval       = 1,                    \
  55         .nr_balance_failed      = 0,                    \
  56 }
  57
  58 extern void __init dump_numa_cpu_topology(void);
  59
  60 #else
  61
  62 static inline void dump_numa_cpu_topology(void) {}
  63
  64 #include <asm-generic/topology.h>
  65
  66 #endif /* CONFIG_NUMA */
  67
  68 #endif /* __KERNEL__ */
  69 #endif  /* _ASM_POWERPC_TOPOLOGY_H */