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 "kern_util.h"
   8 #include "os.h"
   9 #include "skas.h"
  10
  11 void (*pm_power_off)(void);
  12
  13 static void kill_off_processes(void)
  14 {
  15         if (proc_mm)
  16                 /*
  17                  * FIXME: need to loop over userspace_pids
  18                  */
  19                 os_kill_ptraced_process(userspace_pid[0], 1);
  20         else {
  21                 struct task_struct *p;
  22                 int pid, me;
  23
  24                 me = os_getpid();
  25                 for_each_process(p) {
  26                         if (p->mm == NULL)
  27                                 continue;
  28
  29                         pid = p->mm->context.id.u.pid;
  30                         os_kill_ptraced_process(pid, 1);
  31                 }
  32         }
  33 }
  34
  35 void uml_cleanup(void)
  36 {
  37         kmalloc_ok = 0;
  38         do_uml_exitcalls();
  39         kill_off_processes();
  40 }
  41
  42 void machine_restart(char * __unused)
  43 {
  44         uml_cleanup();
  45         reboot_skas();
  46 }
  47
  48 void machine_power_off(void)
  49 {
  50         uml_cleanup();
  51         halt_skas();
  52 }
  53
  54 void machine_halt(void)
  55 {
  56         machine_power_off();
  57 }