linux/sched/signal.h

22 	spinlock_t		siglock;
211 	 * protect this instead of the siglock, because they really
289 	spin_lock_irq(&task->sighand->siglock);
291 	spin_unlock_irq(&task->sighand->siglock);
298 	spin_lock_irq(&current->sighand->siglock);
303 	spin_unlock_irq(&current->sighand->siglock);
434  * callers must hold sighand->siglock.
643  * Without tasklist/siglock it is only rcu-safe if g can't exit/exec,
747 	(void)__cond_lock(&task->sighand->siglock, ret);
754 	spin_unlock_irqrestore(&task->sighand->siglock, *flags);