void __init fork_init(void)
{
	int i;
#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR
#ifndef ARCH_MIN_TASKALIGN
#define ARCH_MIN_TASKALIGN 0
#endif
	int align = max_t(int, L1_CACHE_BYTES, ARCH_MIN_TASKALIGN);
	unsigned long useroffset, usersize;

	/* create a slab on which task_structs can be allocated */
	task_struct_whitelist(&useroffset, &usersize);
	#ifdef CONFIG_IEE
	task_struct_cachep = kmem_cache_create_usercopy("task_struct",
			arch_task_struct_size, align,
			SLAB_PANIC|SLAB_ACCOUNT|SLAB_RED_ZONE,
			useroffset, usersize, NULL);
	#else
	task_struct_cachep = kmem_cache_create_usercopy("task_struct",
			arch_task_struct_size, align,
			SLAB_PANIC|SLAB_ACCOUNT,
			useroffset, usersize, NULL);
	#endif
#endif

	/* do the arch specific task caches init */
	arch_task_cache_init();

	set_max_threads(MAX_THREADS);

	init_task.signal->rlim[RLIMIT_NPROC].rlim_cur = max_threads / 2;
	init_task.signal->rlim[RLIMIT_NPROC].rlim_max = max_threads / 2;
	init_task.signal->rlim[RLIMIT_SIGPENDING] =
		init_task.signal->rlim[RLIMIT_NPROC];

	for (i = 0; i < UCOUNT_COUNTS; i++) {
		init_user_ns.ucount_max[i] = max_threads / 2;
	}

	set_userns_rlimit_max(&init_user_ns, UCOUNT_RLIMIT_NPROC,      RLIM_INFINITY);
	set_userns_rlimit_max(&init_user_ns, UCOUNT_RLIMIT_MSGQUEUE,   RLIM_INFINITY);
	set_userns_rlimit_max(&init_user_ns, UCOUNT_RLIMIT_SIGPENDING, RLIM_INFINITY);
	set_userns_rlimit_max(&init_user_ns, UCOUNT_RLIMIT_MEMLOCK,    RLIM_INFINITY);

#ifdef CONFIG_VMAP_STACK
	cpuhp_setup_state(CPUHP_BP_PREPARE_DYN, "fork:vm_stack_cache",
			  NULL, free_vm_stack_cache);
#endif

	scs_init();

	lockdep_init_task(&init_task);
	uprobes_init();
}