arch/um/kernel/reboot.c

   1 /*
   2  * Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "linux/module.h"
   7 #include "linux/sched.h"
   8 #include "asm/smp.h"
   9 #include "kern_util.h"
  10 #include "kern.h"
  11 #include "os.h"
  12 #include "mode.h"
  13 #include "choose-mode.h"
  14
  15 void (*pm_power_off)(void);
  16
  17 #ifdef CONFIG_SMP
  18 static void kill_idlers(int me)
  19 {
  20 #ifdef CONFIG_MODE_TT
  21         struct task_struct *p;
  22         int i;
  23
  24         for(i = 0; i < ARRAY_SIZE(idle_threads); i++){
  25                 p = idle_threads[i];
  26                 if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
  27                         os_kill_process(p->thread.mode.tt.extern_pid, 0);
  28         }
  29 #endif
  30 }
  31 #endif
  32
  33 static void kill_off_processes(void)
  34 {
  35         CHOOSE_MODE(kill_off_processes_tt(), kill_off_processes_skas());
  36 #ifdef CONFIG_SMP
  37         kill_idlers(os_getpid());
  38 #endif
  39 }
  40
  41 void uml_cleanup(void)
  42 {
  43         kmalloc_ok = 0;
  44         do_uml_exitcalls();
  45         kill_off_processes();
  46 }
  47
  48 void machine_restart(char * __unused)
  49 {
  50         uml_cleanup();
  51         CHOOSE_MODE(reboot_tt(), reboot_skas());
  52 }
  53
  54 void machine_power_off(void)
  55 {
  56         uml_cleanup();
  57         CHOOSE_MODE(halt_tt(), halt_skas());
  58 }
  59
  60 void machine_halt(void)
  61 {
  62         machine_power_off();
  63 }