mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-24 18:38:38 +00:00
6ab3d5624e
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
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;
|
|
|
|
/**
|
|
* 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++)
|
|
cpus_clear(node_to_cpu_mask[node]);
|
|
|
|
for(cpu = 0; cpu < NR_CPUS; ++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;
|
|
}
|
|
cpu_to_node_map[cpu] = (node >= 0) ? node : 0;
|
|
if (node >= 0)
|
|
cpu_set(cpu, node_to_cpu_mask[node]);
|
|
}
|
|
}
|