include/asm-alpha/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 static inline cpumask_t node_to_cpumask(int node)
  26 {
  27         cpumask_t node_cpu_mask = CPU_MASK_NONE;
  28         int cpu;
  29
  30         for(cpu = 0; cpu < NR_CPUS; cpu++) {
  31                 if (cpu_online(cpu) && (cpu_to_node(cpu) == node))
  32                         cpu_set(cpu, node_cpu_mask);
  33         }
  34
  35 #ifdef DEBUG_NUMA
  36         printk("node %d: cpu_mask: %016lx\n", node, node_cpu_mask);
  37 #endif
  38
  39         return node_cpu_mask;
  40 }
  41
  42 /* Cross-node load balancing interval. */
  43 # define NODE_BALANCE_RATE 10
  44
  45 #define pcibus_to_cpumask(bus)  (cpu_online_map)
  46
  47 #else /* CONFIG_NUMA */
  48 # include <asm-generic/topology.h>
  49 #endif /* !CONFIG_NUMA */
  50
  51 #endif /* _ASM_ALPHA_TOPOLOGY_H */