release/src-rt-6.x.4708/linux/linux-2.6.36/arch/alpha/include/asm/topology.h

   1 #ifndef _ASM_ALPHA_TOPOLOGY_H
   2 #define _ASM_ALPHA_TOPOLOGY_H
   3
   4 #include <linux/smp.h>
   5 #include <linux/threads.h>
   6 #include <asm/machvec.h>
   7
   8 #ifdef CONFIG_NUMA
   9 static inline int cpu_to_node(int cpu)
  10 {
  11         int node;
  12
  13         if (!alpha_mv.cpuid_to_nid)
  14                 return 0;
  15
  16         node = alpha_mv.cpuid_to_nid(cpu);
  17
  18 #ifdef DEBUG_NUMA
  19         BUG_ON(node < 0);
  20 #endif
  21
  22         return node;
  23 }
  24
  25 extern struct cpumask node_to_cpumask_map[];
  26 static const struct cpumask *cpumask_of_node(int node)
  27 {
  28         int cpu;
  29
  30         if (node == -1)
  31                 return cpu_all_mask;
  32
  33         cpumask_clear(&node_to_cpumask_map[node]);
  34
  35         for_each_online_cpu(cpu) {
  36                 if (cpu_to_node(cpu) == node)
  37                         cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
  38         }
  39
  40         return &node_to_cpumask_map[node];
  41 }
  42
  43 #define cpumask_of_pcibus(bus)  (cpu_online_mask)
  44
  45 #endif /* !CONFIG_NUMA */
  46 # include <asm-generic/topology.h>
  47
  48 #endif /* _ASM_ALPHA_TOPOLOGY_H */