235 static inline void free_signal_struct(struct signal_struct *sig)  in free_signal_struct()  argument
237 	taskstats_tgid_free(sig);  in free_signal_struct()
238 	sched_autogroup_exit(sig);  in free_signal_struct()
239 	kmem_cache_free(signal_cachep, sig);  in free_signal_struct()
242 static inline void put_signal_struct(struct signal_struct *sig)  in put_signal_struct()  argument
244 	if (atomic_dec_and_test(&sig->sigcnt))  in put_signal_struct()
245 		free_signal_struct(sig);  in put_signal_struct()
1060 	struct sighand_struct *sig;  in copy_sighand()  local
1066 	sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL);  in copy_sighand()
1067 	rcu_assign_pointer(tsk->sighand, sig);  in copy_sighand()
1068 	if (!sig)  in copy_sighand()
1070 	atomic_set(&sig->count, 1);  in copy_sighand()
1071 	memcpy(sig->action, current->sighand->action, sizeof(sig->action));  in copy_sighand()
1090 static void posix_cpu_timers_init_group(struct signal_struct *sig)  in posix_cpu_timers_init_group()  argument
1095 	thread_group_cputime_init(sig);  in posix_cpu_timers_init_group()
1097 	cpu_limit = ACCESS_ONCE(sig->rlim[RLIMIT_CPU].rlim_cur);  in posix_cpu_timers_init_group()
1099 		sig->cputime_expires.prof_exp = secs_to_cputime(cpu_limit);  in posix_cpu_timers_init_group()
1100 		sig->cputimer.running = 1;  in posix_cpu_timers_init_group()
1104 	INIT_LIST_HEAD(&sig->cpu_timers[0]);  in posix_cpu_timers_init_group()
1105 	INIT_LIST_HEAD(&sig->cpu_timers[1]);  in posix_cpu_timers_init_group()
1106 	INIT_LIST_HEAD(&sig->cpu_timers[2]);  in posix_cpu_timers_init_group()
1111 	struct signal_struct *sig;  in copy_signal()  local
1116 	sig = kmem_cache_zalloc(signal_cachep, GFP_KERNEL);  in copy_signal()
1117 	tsk->signal = sig;  in copy_signal()
1118 	if (!sig)  in copy_signal()
1121 	sig->nr_threads = 1;  in copy_signal()
1122 	atomic_set(&sig->live, 1);  in copy_signal()
1123 	atomic_set(&sig->sigcnt, 1);  in copy_signal()
1126 	sig->thread_head = (struct list_head)LIST_HEAD_INIT(tsk->thread_node);  in copy_signal()
1127 	tsk->thread_node = (struct list_head)LIST_HEAD_INIT(sig->thread_head);  in copy_signal()
1129 	init_waitqueue_head(&sig->wait_chldexit);  in copy_signal()
1130 	sig->curr_target = tsk;  in copy_signal()
1131 	init_sigpending(&sig->shared_pending);  in copy_signal()
1132 	INIT_LIST_HEAD(&sig->posix_timers);  in copy_signal()
1133 	seqlock_init(&sig->stats_lock);  in copy_signal()
1135 	hrtimer_init(&sig->real_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);  in copy_signal()
1136 	sig->real_timer.function = it_real_fn;  in copy_signal()
1139 	memcpy(sig->rlim, current->signal->rlim, sizeof sig->rlim);  in copy_signal()
1142 	posix_cpu_timers_init_group(sig);  in copy_signal()
1144 	tty_audit_fork(sig);  in copy_signal()
1145 	sched_autogroup_fork(sig);  in copy_signal()
1148 	init_rwsem(&sig->group_rwsem);  in copy_signal()
1151 	sig->oom_score_adj = current->signal->oom_score_adj;  in copy_signal()
1152 	sig->oom_score_adj_min = current->signal->oom_score_adj_min;  in copy_signal()
1154 	sig->has_child_subreaper = current->signal->has_child_subreaper ||  in copy_signal()
1157 	mutex_init(&sig->cred_guard_mutex);  in copy_signal()