topology.c

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/*
 * CPU topology for Hexagon
 *
 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/node.h>
#include <linux/nodemask.h>
#include <linux/percpu.h>

/*  Swiped from MIPS.  */

static DEFINE_PER_CPU(struct cpu, cpu_devices);

static int __init topology_init(void)
{
    int i, ret;

    for_each_present_cpu(i) {

        /*
         * register_cpu takes a per_cpu pointer and
         * just points it at another per_cpu struct...
         */

        ret = register_cpu(&per_cpu(cpu_devices, i), i);
        if (ret)
            printk(KERN_WARNING "topology_init: register_cpu %d "
                   "failed (%d)\n", i, ret);
    }

    return 0;
}

subsys_initcall(topology_init);