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Commit 9c8a08d7 authored by Jan Glauber's avatar Jan Glauber Committed by Martin Schwidefsky
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[S390] qdio: merge inbound and outbound handler functions 



The inbound and outbound handlers are nearly identical if the outbound
handler uses first_to_check as end index instead of last_move. Since both
values are identical at that point the handlers can be merged.

Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent d303b6fd

drivers/s390/cio/qdio.h

+1 −1
Original line number Diff line number Diff line
@@ -356,7 +356,7 @@ int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state, 
		  int auto_ack);

void qdio_check_outbound_after_thinint(struct qdio_q *q);

int qdio_inbound_q_moved(struct qdio_q *q);

void qdio_kick_inbound_handler(struct qdio_q *q);

void qdio_kick_handler(struct qdio_q *q);

void qdio_stop_polling(struct qdio_q *q);

int qdio_siga_sync_q(struct qdio_q *q);

drivers/s390/cio/qdio_main.c

+19 −43
Original line number Diff line number Diff line
@@ -570,29 +570,30 @@ static int qdio_inbound_q_done(struct qdio_q *q) 
	}

}



void qdio_kick_inbound_handler(struct qdio_q *q)

void qdio_kick_handler(struct qdio_q *q)

{

	int count, start, end;

	int start = q->first_to_kick;

	int end = q->first_to_check;

	int count;



	qdio_perf_stat_inc(&perf_stats.inbound_handler);

	if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))

		return;



	start = q->first_to_kick;

	end = q->first_to_check;

	if (end >= start)

		count = end - start;

	else

		count = end + QDIO_MAX_BUFFERS_PER_Q - start;

	count = sub_buf(end, start);



	if (q->is_input_q) {

		qdio_perf_stat_inc(&perf_stats.inbound_handler);

		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%3d c:%3d", start, count);

	} else {

		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: nr:%1d", q->nr);

		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "s:%3d c:%3d", start, count);

	}



	if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))

		return;



	q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr,

		   start, count, q->irq_ptr->int_parm);

	q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,

		   q->irq_ptr->int_parm);



	/* for the next time */

	q->first_to_kick = q->first_to_check;

	q->first_to_kick = end;

	q->qdio_error = 0;

}
@@ -603,7 +604,7 @@ again: 
	if (!qdio_inbound_q_moved(q))

		return;



	qdio_kick_inbound_handler(q);

	qdio_kick_handler(q);



	if (!qdio_inbound_q_done(q))

		/* means poll time is not yet over */
@@ -736,38 +737,13 @@ static int qdio_kick_outbound_q(struct qdio_q *q) 
	return cc;

}



static void qdio_kick_outbound_handler(struct qdio_q *q)

{

	int start, end, count;



	start = q->first_to_kick;

	end = q->last_move;

	if (end >= start)

		count = end - start;

	else

		count = end + QDIO_MAX_BUFFERS_PER_Q - start;



	DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kickouth: %1d", q->nr);

	DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "s:%3d c:%3d", start, count);



	if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))

		return;



	q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,

		   q->irq_ptr->int_parm);



	/* for the next time: */

	q->first_to_kick = q->last_move;

	q->qdio_error = 0;

}



static void __qdio_outbound_processing(struct qdio_q *q)

{

	qdio_perf_stat_inc(&perf_stats.tasklet_outbound);

	BUG_ON(atomic_read(&q->nr_buf_used) < 0);



	if (qdio_outbound_q_moved(q))

		qdio_kick_outbound_handler(q);

		qdio_kick_handler(q);



	if (queue_type(q) == QDIO_ZFCP_QFMT)

		if (!pci_out_supported(q) && !qdio_outbound_q_done(q))

drivers/s390/cio/qdio_thinint.c

+1 −1
Original line number Diff line number Diff line
@@ -161,7 +161,7 @@ static void __tiqdio_inbound_processing(struct qdio_q *q) 
	if (!qdio_inbound_q_moved(q))

		return;



	qdio_kick_inbound_handler(q);

	qdio_kick_handler(q);



	if (!tiqdio_inbound_q_done(q)) {

		qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop);