static int raise_local(void)
{
struct mce *m = &__get_cpu_var(injectm);
int context = MCJ_CTX(m->inject_flags);
int ret = 0;
int cpu = m->extcpu;
if (m->inject_flags & MCJ_EXCEPTION) {
printk(KERN_INFO "Triggering MCE exception on CPU %d\n", cpu);
switch (context) {
case MCJ_CTX_IRQ:
case MCJ_CTX_PROCESS:
raise_exception(m, NULL);
break;
default:
printk(KERN_INFO "Invalid MCE context\n");
ret = -EINVAL;
}
printk(KERN_INFO "MCE exception done on CPU %d\n", cpu);
} else if (m->status) {
printk(KERN_INFO "Starting machine check poll CPU %d\n", cpu);
raise_poll(m);
mce_notify_irq();
printk(KERN_INFO "Machine check poll done on CPU %d\n", cpu);
} else
m->finished = 0;
return ret;
}
/* Inject mce on current CPU */
static int raise_local(void)
{
struct mce *m = &__get_cpu_var(injectm);
int context = MCJ_CTX(m->inject_flags);
int ret = 0;
int cpu = m->extcpu;
if (m->inject_flags & MCJ_EXCEPTION) {
printk(KERN_INFO "Triggering MCE exception on CPU %d\n", cpu);
switch (context) {
case MCJ_CTX_IRQ:
/*
* Could do more to fake interrupts like
* calling irq_enter, but the necessary
* machinery isn't exported currently.
*/
/*FALL THROUGH*/
case MCJ_CTX_PROCESS:
raise_exception(m, NULL);
break;
default:
printk(KERN_INFO "Invalid MCE context\n");
ret = -EINVAL;
}
printk(KERN_INFO "MCE exception done on CPU %d\n", cpu);
} else if (m->status) {
printk(KERN_INFO "Starting machine check poll CPU %d\n", cpu);
raise_poll(m);
mce_notify_irq();
printk(KERN_INFO "Machine check poll done on CPU %d\n", cpu);
} else
m->finished = 0;
return ret;
}
static int mce_raise_notify(unsigned int cmd, struct pt_regs *regs)
{
int cpu = smp_processor_id();
struct mce *m = &__get_cpu_var(injectm);
if (!cpumask_test_cpu(cpu, mce_inject_cpumask))
return NMI_DONE;
cpumask_clear_cpu(cpu, mce_inject_cpumask);
if (m->inject_flags & MCJ_EXCEPTION)
raise_exception(m, regs);
else if (m->status)
raise_poll(m);
return NMI_HANDLED;
}
static int mce_raise_notify(struct notifier_block *self,
unsigned long val, void *data)
{
struct die_args *args = (struct die_args *)data;
int cpu = smp_processor_id();
struct mce *m = &__get_cpu_var(injectm);
if (val != DIE_NMI_IPI || !cpu_isset(cpu, mce_inject_cpumask))
return NOTIFY_DONE;
cpu_clear(cpu, mce_inject_cpumask);
if (m->inject_flags & MCJ_EXCEPTION)
raise_exception(m, args->regs);
else if (m->status)
raise_poll(m);
return NOTIFY_STOP;
}
