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 #include <trace/events/irq_vectors.h>
   7
   8 #include <asm/irq_vectors.h>
   9 #include <asm/apic.h>
  10 #include <asm/idle.h>
  11 #include <asm/mce.h>
  12
  13 static void default_threshold_interrupt(void)
  14 {
  15         printk(KERN_ERR "Unexpected threshold interrupt at vector %x\n",
  16                          THRESHOLD_APIC_VECTOR);
  17 }
  18
  19 void (*mce_threshold_vector)(void) = default_threshold_interrupt;
  20
  21 asmlinkage void smp_threshold_interrupt(void)
  22 {
  23         exit_idle();
  24         irq_enter();
  25         trace_irq_vector_entry(THRESHOLD_APIC_VECTOR);
  26         inc_irq_stat(irq_threshold_count);
  27         mce_threshold_vector();
  28         trace_irq_vector_exit(THRESHOLD_APIC_VECTOR);
  29         irq_exit();
  30         /* Ack only at the end to avoid potential reentry */
  31         ack_APIC_irq();
  32 }