1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 4 */ 5 6 #include <linux/sched/signal.h> 7 #include <linux/sched/task.h> 8 #include <linux/sched/mm.h> 9 #include <linux/spinlock.h> 10 #include <linux/slab.h> 11 #include <linux/oom.h> 12 #include <kern_util.h> 13 #include <os.h> 14 #include <skas.h> 15 16 void (*pm_power_off)(void); 17 EXPORT_SYMBOL(pm_power_off); 18 19 static void kill_off_processes(void) 20 { 21 struct task_struct *p; 22 int pid; 23 24 read_lock(&tasklist_lock); 25 for_each_process(p) { 26 struct task_struct *t; 27 28 t = find_lock_task_mm(p); 29 if (!t) 30 continue; 31 pid = t->mm->context.id.u.pid; 32 task_unlock(t); 33 os_kill_ptraced_process(pid, 1); 34 } 35 read_unlock(&tasklist_lock); 36 } 37 38 void uml_cleanup(void) 39 { 40 kmalloc_ok = 0; 41 do_uml_exitcalls(); 42 kill_off_processes(); 43 } 44 45 void machine_restart(char * __unused) 46 { 47 uml_cleanup(); 48 reboot_skas(); 49 } 50 51 void machine_power_off(void) 52 { 53 uml_cleanup(); 54 halt_skas(); 55 } 56 57 void machine_halt(void) 58 { 59 machine_power_off(); 60 } 61