include/asm-powerpc/topology.h

   1 #ifndef _ASM_POWERPC_TOPOLOGY_H
   2 #define _ASM_POWERPC_TOPOLOGY_H
   3
   4 #include <linux/config.h>
   5
   6 #ifdef CONFIG_NUMA
   7
   8 #include <asm/mmzone.h>
   9
  10 static inline int cpu_to_node(int cpu)
  11 {
  12         int node;
  13
  14         node = numa_cpu_lookup_table[cpu];
  15
  16 #ifdef DEBUG_NUMA
  17         BUG_ON(node == -1);
  18 #endif
  19
  20         return node;
  21 }
  22
  23 #define parent_node(node)       (node)
  24
  25 static inline cpumask_t node_to_cpumask(int node)
  26 {
  27         return numa_cpumask_lookup_table[node];
  28 }
  29
  30 static inline int node_to_first_cpu(int node)
  31 {
  32         cpumask_t tmp;
  33         tmp = node_to_cpumask(node);
  34         return first_cpu(tmp);
  35 }
  36
  37 #define pcibus_to_node(node)    (-1)
  38 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  39
  40 #define nr_cpus_node(node)      (nr_cpus_in_node[node])
  41
  42 /* sched_domains SD_NODE_INIT for PPC64 machines */
  43 #define SD_NODE_INIT (struct sched_domain) {            \
  44         .span                   = CPU_MASK_NONE,        \
  45         .parent                 = NULL,                 \
  46         .groups                 = NULL,                 \
  47         .min_interval           = 8,                    \
  48         .max_interval           = 32,                   \
  49         .busy_factor            = 32,                   \
  50         .imbalance_pct          = 125,                  \
  51         .cache_hot_time         = (10*1000000),         \
  52         .cache_nice_tries       = 1,                    \
  53         .per_cpu_gain           = 100,                  \
  54         .flags                  = SD_LOAD_BALANCE       \
  55                                 | SD_BALANCE_EXEC       \
  56                                 | SD_BALANCE_NEWIDLE    \
  57                                 | SD_WAKE_IDLE          \
  58                                 | SD_WAKE_BALANCE,      \
  59         .last_balance           = jiffies,              \
  60         .balance_interval       = 1,                    \
  61         .nr_balance_failed      = 0,                    \
  62 }
  63
  64 #else
  65
  66 #include <asm-generic/topology.h>
  67
  68 #endif /* CONFIG_NUMA */
  69
  70 #endif  /* _ASM_POWERPC_TOPOLOGY_H */