smp-up.c

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/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2006, 07 by Ralf Baechle ([email protected])
 *
 * Symmetric Uniprocessor (TM) Support
 */
#include <linux/kernel.h>
#include <linux/sched.h>

/*
 * Send inter-processor interrupt
 */
static void up_send_ipi_single(int cpu, unsigned int action)
{
    panic(KERN_ERR "%s called", __func__);
}

static inline void up_send_ipi_mask(const struct cpumask *mask,
                    unsigned int action)
{
    panic(KERN_ERR "%s called", __func__);
}

/*
 *  After we've done initial boot, this function is called to allow the
 *  board code to clean up state, if needed
 */
static void __cpuinit up_init_secondary(void)
{
}

static void __cpuinit up_smp_finish(void)
{
}

/* Hook for after all CPUs are online */
static void up_cpus_done(void)
{
}

/*
 * Firmware CPU startup hook
 */
static void __cpuinit up_boot_secondary(int cpu, struct task_struct *idle)
{
}

static void __init up_smp_setup(void)
{
}

static void __init up_prepare_cpus(unsigned int max_cpus)
{
}

#ifdef CONFIG_HOTPLUG_CPU
static int up_cpu_disable(void)
{
    return -ENOSYS;
}

static void up_cpu_die(unsigned int cpu)
{
    BUG();
}
#endif

struct plat_smp_ops up_smp_ops = {
    .send_ipi_single    = up_send_ipi_single,
    .send_ipi_mask      = up_send_ipi_mask,
    .init_secondary     = up_init_secondary,
    .smp_finish     = up_smp_finish,
    .cpus_done      = up_cpus_done,
    .boot_secondary     = up_boot_secondary,
    .smp_setup      = up_smp_setup,
    .prepare_cpus       = up_prepare_cpus,
#ifdef CONFIG_HOTPLUG_CPU
    .cpu_disable        = up_cpu_disable,
    .cpu_die        = up_cpu_die,
#endif
};