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 "user_util.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 #ifdef CONFIG_SMP
  16 static void kill_idlers(int me)
  17 {
  18 #ifdef CONFIG_MODE_TT
  19         struct task_struct *p;
  20         int i;
  21
  22         for(i = 0; i < sizeof(idle_threads)/sizeof(idle_threads[0]); i++){
  23                 p = idle_threads[i];
  24                 if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
  25                         os_kill_process(p->thread.mode.tt.extern_pid, 0);
  26         }
  27 #endif
  28 }
  29 #endif
  30
  31 static void kill_off_processes(void)
  32 {
  33         CHOOSE_MODE(kill_off_processes_tt(), kill_off_processes_skas());
  34 #ifdef CONFIG_SMP
  35         kill_idlers(os_getpid());
  36 #endif
  37 }
  38
  39 void uml_cleanup(void)
  40 {
  41         kill_off_processes();
  42         do_uml_exitcalls();
  43 }
  44
  45 void machine_restart(char * __unused)
  46 {
  47         do_uml_exitcalls();
  48         kill_off_processes();
  49         CHOOSE_MODE(reboot_tt(), reboot_skas());
  50 }
  51
  52 EXPORT_SYMBOL(machine_restart);
  53
  54 void machine_power_off(void)
  55 {
  56         do_uml_exitcalls();
  57         kill_off_processes();
  58         CHOOSE_MODE(halt_tt(), halt_skas());
  59 }
  60
  61 EXPORT_SYMBOL(machine_power_off);
  62
  63 void machine_halt(void)
  64 {
  65         machine_power_off();
  66 }
  67
  68 EXPORT_SYMBOL(machine_halt);
  69
  70 /*
  71  * Overrides for Emacs so that we follow Linus's tabbing style.
  72  * Emacs will notice this stuff at the end of the file and automatically
  73  * adjust the settings for this buffer only.  This must remain at the end
  74  * of the file.
  75  * ---------------------------------------------------------------------------
  76  * Local variables:
  77  * c-file-style: "linux"
  78  * End:
  79  */