include/asm-ppc64/topology.h

   1 #ifndef _ASM_PPC64_TOPOLOGY_H
   2 #define _ASM_PPC64_TOPOLOGY_H
   3
   4 #include <linux/config.h>
   5 #include <asm/mmzone.h>
   6
   7 #ifdef CONFIG_NUMA
   8
   9 static inline int cpu_to_node(int cpu)
  10 {
  11         int node;
  12
  13         node = numa_cpu_lookup_table[cpu];
  14
  15 #ifdef DEBUG_NUMA
  16         BUG_ON(node == -1);
  17 #endif
  18
  19         return node;
  20 }
  21
  22 #define parent_node(node)       (node)
  23
  24 static inline cpumask_t node_to_cpumask(int node)
  25 {
  26         return numa_cpumask_lookup_table[node];
  27 }
  28
  29 static inline int node_to_first_cpu(int node)
  30 {
  31         cpumask_t tmp;
  32         tmp = node_to_cpumask(node);
  33         return first_cpu(tmp);
  34 }
  35
  36 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  37
  38 #define nr_cpus_node(node)      (nr_cpus_in_node[node])
  39
  40 /* sched_domains SD_NODE_INIT for PPC64 machines */
  41 #define SD_NODE_INIT (struct sched_domain) {            \
  42         .span                   = CPU_MASK_NONE,        \
  43         .parent                 = NULL,                 \
  44         .groups                 = NULL,                 \
  45         .min_interval           = 8,                    \
  46         .max_interval           = 32,                   \
  47         .busy_factor            = 32,                   \
  48         .imbalance_pct          = 125,                  \
  49         .cache_hot_time         = (10*1000000),         \
  50         .cache_nice_tries       = 1,                    \
  51         .per_cpu_gain           = 100,                  \
  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 #else /* !CONFIG_NUMA */
  63
  64 #include <asm-generic/topology.h>
  65
  66 #endif /* CONFIG_NUMA */
  67
  68 #endif /* _ASM_PPC64_TOPOLOGY_H */