LXR linux/arch/alpha/include/asm/topology.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_ALPHA_TOPOLOGY_H
   3#define _ASM_ALPHA_TOPOLOGY_H
   4
   5#include <linux/smp.h>
   6#include <linux/threads.h>
   7#include <linux/numa.h>
   8#include <asm/machvec.h>
   9
  10#ifdef CONFIG_NUMA
  11static inline int cpu_to_node(int cpu)
  12{
  13        int node;
  14        
  15        if (!alpha_mv.cpuid_to_nid)
  16                return 0;
  17
  18        node = alpha_mv.cpuid_to_nid(cpu);
  19
  20#ifdef DEBUG_NUMA
  21        BUG_ON(node < 0);
  22#endif
  23
  24        return node;
  25}
  26
  27extern struct cpumask node_to_cpumask_map[];
  28/* FIXME: This is dumb, recalculating every time.  But simple. */
  29static const struct cpumask *cpumask_of_node(int node)
  30{
  31        int cpu;
  32
  33        if (node == NUMA_NO_NODE)
  34                return cpu_all_mask;
  35
  36        cpumask_clear(&node_to_cpumask_map[node]);
  37
  38        for_each_online_cpu(cpu) {
  39                if (cpu_to_node(cpu) == node)
  40                        cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
  41        }
  42
  43        return &node_to_cpumask_map[node];
  44}
  45
  46#define cpumask_of_pcibus(bus)  (cpu_online_mask)
  47
  48#endif /* !CONFIG_NUMA */
  49# include <asm-generic/topology.h>
  50
  51#endif /* _ASM_ALPHA_TOPOLOGY_H */
  52