LXR linux/arch/um/kernel/reboot.c

   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
  16void (*pm_power_off)(void);
  17EXPORT_SYMBOL(pm_power_off);
  18
  19static 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
  38void uml_cleanup(void)
  39{
  40        kmalloc_ok = 0;
  41        do_uml_exitcalls();
  42        kill_off_processes();
  43}
  44
  45void machine_restart(char * __unused)
  46{
  47        uml_cleanup();
  48        reboot_skas();
  49}
  50
  51void machine_power_off(void)
  52{
  53        uml_cleanup();
  54        halt_skas();
  55}
  56
  57void machine_halt(void)
  58{
  59        machine_power_off();
  60}
  61