numa.c (42249094f79422fbf5ed4b54eeb48ff096809b8f) numa.c (5d2068da8d339e4dff8f9b9a1246e6a79e2949d8)
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of

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34{
35 int oldnid;
36 if (nid < 0) { /* just initialize by zero */
37 cpu_to_node_map[cpu] = 0;
38 return;
39 }
40 /* sanity check first */
41 oldnid = cpu_to_node_map[cpu];
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of

--- 25 unchanged lines hidden (view full) ---

34{
35 int oldnid;
36 if (nid < 0) { /* just initialize by zero */
37 cpu_to_node_map[cpu] = 0;
38 return;
39 }
40 /* sanity check first */
41 oldnid = cpu_to_node_map[cpu];
42 if (cpu_isset(cpu, node_to_cpu_mask[oldnid])) {
42 if (cpumask_test_cpu(cpu, &node_to_cpu_mask[oldnid])) {
43 return; /* nothing to do */
44 }
45 /* we don't have cpu-driven node hot add yet...
46 In usual case, node is created from SRAT at boot time. */
47 if (!node_online(nid))
48 nid = first_online_node;
49 cpu_to_node_map[cpu] = nid;
43 return; /* nothing to do */
44 }
45 /* we don't have cpu-driven node hot add yet...
46 In usual case, node is created from SRAT at boot time. */
47 if (!node_online(nid))
48 nid = first_online_node;
49 cpu_to_node_map[cpu] = nid;
50 cpu_set(cpu, node_to_cpu_mask[nid]);
50 cpumask_set_cpu(cpu, &node_to_cpu_mask[nid]);
51 return;
52}
53
54void unmap_cpu_from_node(int cpu, int nid)
55{
51 return;
52}
53
54void unmap_cpu_from_node(int cpu, int nid)
55{
56 WARN_ON(!cpu_isset(cpu, node_to_cpu_mask[nid]));
56 WARN_ON(!cpumask_test_cpu(cpu, &node_to_cpu_mask[nid]));
57 WARN_ON(cpu_to_node_map[cpu] != nid);
58 cpu_to_node_map[cpu] = 0;
57 WARN_ON(cpu_to_node_map[cpu] != nid);
58 cpu_to_node_map[cpu] = 0;
59 cpu_clear(cpu, node_to_cpu_mask[nid]);
59 cpumask_clear_cpu(cpu, &node_to_cpu_mask[nid]);
60}
61
62
63/**
64 * build_cpu_to_node_map - setup cpu to node and node to cpumask arrays
65 *
66 * Build cpu to node mapping and initialize the per node cpu masks using
67 * info from the node_cpuid array handed to us by ACPI.
68 */
69void __init build_cpu_to_node_map(void)
70{
71 int cpu, i, node;
72
73 for(node=0; node < MAX_NUMNODES; node++)
60}
61
62
63/**
64 * build_cpu_to_node_map - setup cpu to node and node to cpumask arrays
65 *
66 * Build cpu to node mapping and initialize the per node cpu masks using
67 * info from the node_cpuid array handed to us by ACPI.
68 */
69void __init build_cpu_to_node_map(void)
70{
71 int cpu, i, node;
72
73 for(node=0; node < MAX_NUMNODES; node++)
74 cpus_clear(node_to_cpu_mask[node]);
74 cpumask_clear(&node_to_cpu_mask[node]);
75
76 for_each_possible_early_cpu(cpu) {
77 node = -1;
78 for (i = 0; i < NR_CPUS; ++i)
79 if (cpu_physical_id(cpu) == node_cpuid[i].phys_id) {
80 node = node_cpuid[i].nid;
81 break;
82 }
83 map_cpu_to_node(cpu, node);
84 }
85}
75
76 for_each_possible_early_cpu(cpu) {
77 node = -1;
78 for (i = 0; i < NR_CPUS; ++i)
79 if (cpu_physical_id(cpu) == node_cpuid[i].phys_id) {
80 node = node_cpuid[i].nid;
81 break;
82 }
83 map_cpu_to_node(cpu, node);
84 }
85}