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    Subject[PATCH 6/6] x86/x2apic_phys.c: Wakeup function in x2apic_phys calls mwait or nmi method
    Date

    wmb();
    + printk("%s:%d\n",__func__,__LINE__);
    cpu_idle();
    }

    @@ -478,6 +479,8 @@ _wakeup_secondary_cpu_via_nmi(int apicid, int dest_mode)
    unsigned long send_status, accept_status = 0;
    int maxlvt;

    + printk("%s:%d\n",__func__,__LINE__);
    +
    /* Target chip */
    /* Boot on the stack */
    /* Kick the second */
    @@ -530,6 +533,7 @@ DEFINE_PER_CPU(int, cpu_dead) = { 0 };

    static int wakeup_secondary_cpu_via_mwait(int cpu)
    {
    + printk("%s:%d\n",__func__,__LINE__);
    per_cpu(cpu_dead, cpu) |= CPU_DEAD_TRIGGER;
    return 0;
    }
    @@ -553,6 +557,7 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
    unsigned long send_status, accept_status = 0;
    int maxlvt, num_starts, j;

    + printk("%s:%d\n",__func__,__LINE__);
    maxlvt = lapic_get_maxlvt();

    /*
    diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
    index 6345294..b218149 100644
    --- a/drivers/base/cpu.c
    +++ b/drivers/base/cpu.c
    @@ -49,6 +49,7 @@ static ssize_t __ref store_online(struct device *dev,
    kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
    break;
    case '1':
    + printk("%s:%d\n",__func__,__LINE__);
    ret = cpu_up(cpu->dev.id);
    if (!ret)
    kobject_uevent(&dev->kobj, KOBJ_ONLINE);

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