arch/x86_64/kernel/crash.c

   1 /*
   2  * Architecture specific (x86_64) functions for kexec based crash dumps.
   3  *
   4  * Created by: Hariprasad Nellitheertha (hari@in.ibm.com)
   5  *
   6  * Copyright (C) IBM Corporation, 2004. All rights reserved.
   7  *
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/types.h>
  12 #include <linux/kernel.h>
  13 #include <linux/smp.h>
  14 #include <linux/irq.h>
  15 #include <linux/reboot.h>
  16 #include <linux/kexec.h>
  17
  18 #include <asm/processor.h>
  19 #include <asm/hardirq.h>
  20 #include <asm/nmi.h>
  21 #include <asm/hw_irq.h>
  22
  23 note_buf_t crash_notes[NR_CPUS];
  24
  25 void machine_crash_shutdown(struct pt_regs *regs)
  26 {
  27         /* This function is only called after the system
  28          * has paniced or is otherwise in a critical state.
  29          * The minimum amount of code to allow a kexec'd kernel
  30          * to run successfully needs to happen here.
  31          *
  32          * In practice this means shooting down the other cpus in
  33          * an SMP system.
  34          */
  35 }