release/src-rt-6.x.4708/linux/linux-2.6.36/arch/um/kernel/reboot.c

   1 /*
   2  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "linux/sched.h"
   7 #include "linux/slab.h"
   8 #include "kern_util.h"
   9 #include "os.h"
  10 #include "skas.h"
  11
  12 void (*pm_power_off)(void);
  13
  14 static void kill_off_processes(void)
  15 {
  16         if (proc_mm)
  17                 os_kill_ptraced_process(userspace_pid[0], 1);
  18         else {
  19                 struct task_struct *p;
  20                 int pid, me;
  21
  22                 me = os_getpid();
  23                 for_each_process(p) {
  24                         if (p->mm == NULL)
  25                                 continue;
  26
  27                         pid = p->mm->context.id.u.pid;
  28                         os_kill_ptraced_process(pid, 1);
  29                 }
  30         }
  31 }
  32
  33 void uml_cleanup(void)
  34 {
  35         kmalloc_ok = 0;
  36         do_uml_exitcalls();
  37         kill_off_processes();
  38 }
  39
  40 void machine_restart(char * __unused)
  41 {
  42         uml_cleanup();
  43         reboot_skas();
  44 }
  45
  46 void machine_power_off(void)
  47 {
  48         uml_cleanup();
  49         halt_skas();
  50 }
  51
  52 void machine_halt(void)
  53 {
  54         machine_power_off();
  55 }