threshold.c

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/*
 * Common corrected MCE threshold handler code:
 */
#include <linux/interrupt.h>
#include <linux/kernel.h>

#include <asm/irq_vectors.h>
#include <asm/apic.h>
#include <asm/idle.h>
#include <asm/mce.h>

static void default_threshold_interrupt(void)
{
    printk(KERN_ERR "Unexpected threshold interrupt at vector %x\n",
             THRESHOLD_APIC_VECTOR);
}

void (*mce_threshold_vector)(void) = default_threshold_interrupt;

asmlinkage void smp_threshold_interrupt(void)
{
    irq_enter();
    exit_idle();
    inc_irq_stat(irq_threshold_count);
    mce_threshold_vector();
    irq_exit();
    /* Ack only at the end to avoid potential reentry */
    ack_APIC_irq();
}