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 "user_util.h"
  10 #include "kern_util.h"
  11 #include "kern.h"
  12 #include "os.h"
  13 #include "mode.h"
  14 #include "choose-mode.h"
  15
  16 void (*pm_power_off)(void);
  17
  18 #ifdef CONFIG_SMP
  19 static void kill_idlers(int me)
  20 {
  21 #ifdef CONFIG_MODE_TT
  22         struct task_struct *p;
  23         int i;
  24
  25         for(i = 0; i < ARRAY_SIZE(idle_threads); i++){
  26                 p = idle_threads[i];
  27                 if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
  28                         os_kill_process(p->thread.mode.tt.extern_pid, 0);
  29         }
  30 #endif
  31 }
  32 #endif
  33
  34 static void kill_off_processes(void)
  35 {
  36         CHOOSE_MODE(kill_off_processes_tt(), kill_off_processes_skas());
  37 #ifdef CONFIG_SMP
  38         kill_idlers(os_getpid());
  39 #endif
  40 }
  41
  42 void uml_cleanup(void)
  43 {
  44         kmalloc_ok = 0;
  45         do_uml_exitcalls();
  46         kill_off_processes();
  47 }
  48
  49 void machine_restart(char * __unused)
  50 {
  51         uml_cleanup();
  52         CHOOSE_MODE(reboot_tt(), reboot_skas());
  53 }
  54
  55 void machine_power_off(void)
  56 {
  57         uml_cleanup();
  58         CHOOSE_MODE(halt_tt(), halt_skas());
  59 }
  60
  61 void machine_halt(void)
  62 {
  63         machine_power_off();
  64 }