Release 4.11 arch/ia64/kernel/numa.c
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ia64 kernel NUMA specific stuff
*
* Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
* Copyright (C) 2004 Silicon Graphics, Inc.
* Jesse Barnes <jbarnes@sgi.com>
*/
#include <linux/topology.h>
#include <linux/module.h>
#include <asm/processor.h>
#include <asm/smp.h>
u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
EXPORT_SYMBOL(cpu_to_node_map);
cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
EXPORT_SYMBOL(node_to_cpu_mask);
void map_cpu_to_node(int cpu, int nid)
{
int oldnid;
if (nid < 0) { /* just initialize by zero */
cpu_to_node_map[cpu] = 0;
return;
}
/* sanity check first */
oldnid = cpu_to_node_map[cpu];
if (cpumask_test_cpu(cpu, &node_to_cpu_mask[oldnid])) {
return; /* nothing to do */
}
/* we don't have cpu-driven node hot add yet...
In usual case, node is created from SRAT at boot time. */
if (!node_online(nid))
nid = first_online_node;
cpu_to_node_map[cpu] = nid;
cpumask_set_cpu(cpu, &node_to_cpu_mask[nid]);
return;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kamezawa Hiroyuki | 84 | 95.45% | 1 | 50.00% |
| Rusty Russell | 4 | 4.55% | 1 | 50.00% |
| Total | 88 | 100.00% | 2 | 100.00% |
void unmap_cpu_from_node(int cpu, int nid)
{
WARN_ON(!cpumask_test_cpu(cpu, &node_to_cpu_mask[nid]));
WARN_ON(cpu_to_node_map[cpu] != nid);
cpu_to_node_map[cpu] = 0;
cpumask_clear_cpu(cpu, &node_to_cpu_mask[nid]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kamezawa Hiroyuki | 50 | 92.59% | 1 | 50.00% |
| Rusty Russell | 4 | 7.41% | 1 | 50.00% |
| Total | 54 | 100.00% | 2 | 100.00% |
/**
* build_cpu_to_node_map - setup cpu to node and node to cpumask arrays
*
* Build cpu to node mapping and initialize the per node cpu masks using
* info from the node_cpuid array handed to us by ACPI.
*/
void __init build_cpu_to_node_map(void)
{
int cpu, i, node;
for(node=0; node < MAX_NUMNODES; node++)
cpumask_clear(&node_to_cpu_mask[node]);
for_each_possible_early_cpu(cpu) {
node = -1;
for (i = 0; i < NR_CPUS; ++i)
if (cpu_physical_id(cpu) == node_cpuid[i].phys_id) {
node = node_cpuid[i].nid;
break;
}
map_cpu_to_node(cpu, node);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tony Luck | 87 | 92.55% | 1 | 25.00% |
| Robin Holt | 4 | 4.26% | 1 | 25.00% |
| Rusty Russell | 2 | 2.13% | 1 | 25.00% |
| Kamezawa Hiroyuki | 1 | 1.06% | 1 | 25.00% |
| Total | 94 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kamezawa Hiroyuki | 135 | 49.27% | 1 | 16.67% |
| Tony Luck | 119 | 43.43% | 1 | 16.67% |
| Rusty Russell | 10 | 3.65% | 1 | 16.67% |
| Greg Banks | 5 | 1.82% | 1 | 16.67% |
| Robin Holt | 4 | 1.46% | 1 | 16.67% |
| Jack Steiner | 1 | 0.36% | 1 | 16.67% |
| Total | 274 | 100.00% | 6 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.