kernel/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/spinlock.h>
   8 #include <linux/slab.h>
   9 #include <linux/oom.h>
  10 #include <kern_util.h>
  11 #include <os.h>
  12 #include <skas.h>
  13
  14 void (*pm_power_off)(void);
  15
  16 static void kill_off_processes(void)
  17 {
  18         struct task_struct *p;
  19         int pid;
  20
  21         read_lock(&tasklist_lock);
  22         for_each_process(p) {
  23                 struct task_struct *t;
  24
  25                 t = find_lock_task_mm(p);
  26                 if (!t)
  27                         continue;
  28                 pid = t->mm->context.id.u.pid;
  29                 task_unlock(t);
  30                 os_kill_ptraced_process(pid, 1);
  31         }
  32         read_unlock(&tasklist_lock);
  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 }