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         kmalloc_ok = 0;
  42         do_uml_exitcalls();
  43         kill_off_processes();
  44 }
  45
  46 void machine_restart(char * __unused)
  47 {
  48         uml_cleanup();
  49         CHOOSE_MODE(reboot_tt(), reboot_skas());
  50 }
  51
  52 EXPORT_SYMBOL(machine_restart);
  53
  54 void machine_power_off(void)
  55 {
  56         uml_cleanup();
  57         CHOOSE_MODE(halt_tt(), halt_skas());
  58 }
  59
  60 EXPORT_SYMBOL(machine_power_off);
  61
  62 void machine_halt(void)
  63 {
  64         machine_power_off();
  65 }
  66
  67 EXPORT_SYMBOL(machine_halt);
  68
  69 /*
  70  * Overrides for Emacs so that we follow Linus's tabbing style.
  71  * Emacs will notice this stuff at the end of the file and automatically
  72  * adjust the settings for this buffer only.  This must remain at the end
  73  * of the file.
  74  * ---------------------------------------------------------------------------
  75  * Local variables:
  76  * c-file-style: "linux"
  77  * End:
  78  */