720 static inline void free_signal_struct(struct signal_struct *sig)  in free_signal_struct()  argument
722 	taskstats_tgid_free(sig);  in free_signal_struct()
723 	sched_autogroup_exit(sig);  in free_signal_struct()
728 	if (sig->oom_mm)  in free_signal_struct()
729 		mmdrop_async(sig->oom_mm);  in free_signal_struct()
730 	kmem_cache_free(signal_cachep, sig);  in free_signal_struct()
733 static inline void put_signal_struct(struct signal_struct *sig)  in put_signal_struct()  argument
735 	if (refcount_dec_and_test(&sig->sigcnt))  in put_signal_struct()
736 		free_signal_struct(sig);  in put_signal_struct()
1512 	struct sighand_struct *sig;  in copy_sighand()  local
1518 	sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL);  in copy_sighand()
1519 	rcu_assign_pointer(tsk->sighand, sig);  in copy_sighand()
1520 	if (!sig)  in copy_sighand()
1523 	refcount_set(&sig->count, 1);  in copy_sighand()
1525 	memcpy(sig->action, current->sighand->action, sizeof(sig->action));  in copy_sighand()
1545 static void posix_cpu_timers_init_group(struct signal_struct *sig)  in posix_cpu_timers_init_group()  argument
1547 	struct posix_cputimers *pct = &sig->posix_cputimers;  in posix_cpu_timers_init_group()
1550 	cpu_limit = READ_ONCE(sig->rlim[RLIMIT_CPU].rlim_cur);  in posix_cpu_timers_init_group()
1556 	struct signal_struct *sig;  in copy_signal()  local
1561 	sig = kmem_cache_zalloc(signal_cachep, GFP_KERNEL);  in copy_signal()
1562 	tsk->signal = sig;  in copy_signal()
1563 	if (!sig)  in copy_signal()
1566 	sig->nr_threads = 1;  in copy_signal()
1567 	atomic_set(&sig->live, 1);  in copy_signal()
1568 	refcount_set(&sig->sigcnt, 1);  in copy_signal()
1571 	sig->thread_head = (struct list_head)LIST_HEAD_INIT(tsk->thread_node);  in copy_signal()
1572 	tsk->thread_node = (struct list_head)LIST_HEAD_INIT(sig->thread_head);  in copy_signal()
1574 	init_waitqueue_head(&sig->wait_chldexit);  in copy_signal()
1575 	sig->curr_target = tsk;  in copy_signal()
1576 	init_sigpending(&sig->shared_pending);  in copy_signal()
1577 	INIT_HLIST_HEAD(&sig->multiprocess);  in copy_signal()
1578 	seqlock_init(&sig->stats_lock);  in copy_signal()
1579 	prev_cputime_init(&sig->prev_cputime);  in copy_signal()
1582 	INIT_LIST_HEAD(&sig->posix_timers);  in copy_signal()
1583 	hrtimer_init(&sig->real_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);  in copy_signal()
1584 	sig->real_timer.function = it_real_fn;  in copy_signal()
1588 	memcpy(sig->rlim, current->signal->rlim, sizeof sig->rlim);  in copy_signal()
1591 	posix_cpu_timers_init_group(sig);  in copy_signal()
1593 	tty_audit_fork(sig);  in copy_signal()
1594 	sched_autogroup_fork(sig);  in copy_signal()
1596 	sig->oom_score_adj = current->signal->oom_score_adj;  in copy_signal()
1597 	sig->oom_score_adj_min = current->signal->oom_score_adj_min;  in copy_signal()
1599 	mutex_init(&sig->cred_guard_mutex);  in copy_signal()