xref: /openbmc/linux/arch/um/kernel/reboot.c (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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 }
64