remove handle_group_stop() in favor of do_signal_stop()

	struct signal_struct *sig = current->signal;

	int stop_count;

	if (!likely(sig->flags & SIGNAL_STOP_DEQUEUED))

		return 0;

	if (sig->group_stop_count > 0) {

		/*

		 * There is a group stop in progress.  We don't need to

		 */

		stop_count = --sig->group_stop_count;

	} else {

		struct task_struct *t;

		if (!likely(sig->flags & SIGNAL_STOP_DEQUEUED))

			return 0;

		/*

		 * There is no group stop already in progress.

		 * We must initiate one now.

		 */

		struct task_struct *t;

		sig->group_exit_code = signr;

		stop_count = 0;

	return 1;

}

/*

 * Do appropriate magic when group_stop_count > 0.

 * We return nonzero if we stopped, after releasing the siglock.

 * We return zero if we still hold the siglock and should look

 * for another signal without checking group_stop_count again.

 */

static int handle_group_stop(void)

{

	int stop_count;

	if (current->signal->flags & SIGNAL_GROUP_EXIT)

		/*

		 * Group stop is so another thread can do a core dump,

		 * or else we are racing against a death signal.

		 * Just punt the stop so we can get the next signal.

		 */

		return 0;

	/*

	 * There is a group stop in progress.  We stop

	 * without any associated signal being in our queue.

	 */

	stop_count = --current->signal->group_stop_count;

	if (stop_count == 0)

		current->signal->flags = SIGNAL_STOP_STOPPED;

	current->exit_code = current->signal->group_exit_code;

	set_current_state(TASK_STOPPED);

	spin_unlock_irq(&current->sighand->siglock);

	finish_stop(stop_count);

	return 1;

}

int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka,

			  struct pt_regs *regs, void *cookie)

{

		struct k_sigaction *ka;

		if (unlikely(current->signal->group_stop_count > 0) &&

		    handle_group_stop())

		    do_signal_stop(0))

			goto relock;

		signr = dequeue_signal(current, mask, info);