arch/x86/kernel/cpu/mcheck/threshold.c

   1 /*
   2  * Common corrected MCE threshold handler code:
   3  */
   4 #include <linux/interrupt.h>
   5 #include <linux/kernel.h>
   6
   7 #include <asm/irq_vectors.h>
   8 #include <asm/apic.h>
   9 #include <asm/idle.h>
  10 #include <asm/mce.h>
  11
  12 static void default_threshold_interrupt(void)
  13 {
  14         printk(KERN_ERR "Unexpected threshold interrupt at vector %x\n",
  15                          THRESHOLD_APIC_VECTOR);
  16 }
  17
  18 void (*mce_threshold_vector)(void) = default_threshold_interrupt;
  19
  20 asmlinkage void smp_threshold_interrupt(void)
  21 {
  22         irq_enter();
  23         exit_idle();
  24         inc_irq_stat(irq_threshold_count);
  25         mce_threshold_vector();
  26         irq_exit();
  27         /* Ack only at the end to avoid potential reentry */
  28         ack_APIC_irq();
  29 }