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[S390] qdio: reduce per device debug messages 

Even if turned off the debug message overhead is measurable in the hot path.
Reduce the number of debug message calls in do_QDIO and qdio_kick_handler.
Also use hex numbers to save space in the debug entries.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Jan Glauber 2009-09-22 22:58:39 +02:00 committed by Martin Schwidefsky
parent 703e5c9993
commit 1d7e1500a6
1 changed files with 12 additions and 18 deletions
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30
drivers/s390/cio/qdio_main.c
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@ -401,7 +401,7 @@ static void announce_buffer_error(struct qdio_q *q, int count)
if ((!q->is_input_q &&
(q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) {
qdio_perf_stat_inc(&perf_stats.outbound_target_full);
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%3d",
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x",
q->first_to_check);
return;
}
@ -418,7 +418,7 @@ static inline void inbound_primed(struct qdio_q *q, int count)
{
int new;
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %3d", count);
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %02x", count);
/* for QEBSM the ACK was already set by EQBS */
if (is_qebsm(q)) {
@ -545,7 +545,7 @@ static inline int qdio_inbound_q_done(struct qdio_q *q)
* has (probably) not moved (see qdio_inbound_processing).
*/
if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%3d",
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x",
q->first_to_check);
return 1;
} else
@ -565,11 +565,10 @@ static void qdio_kick_handler(struct qdio_q *q)
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);
}
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count);
} else
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x",
start, count);
q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,
q->irq_ptr->int_parm);
@ -633,7 +632,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
switch (state) {
case SLSB_P_OUTPUT_EMPTY:
/* the adapter got it */
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %3d", q->nr, count);
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %02x", q->nr, count);
atomic_sub(count, &q->nr_buf_used);
q->first_to_check = add_buf(q->first_to_check, count);
@ -1481,10 +1480,9 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
get_buf_state(q, prev_buf(bufnr), &state, 0);
if (state != SLSB_CU_OUTPUT_PRIMED)
rc = qdio_kick_outbound_q(q);
else {
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "fast-req");
else
qdio_perf_stat_inc(&perf_stats.fast_requeue);
}
out:
tasklet_schedule(&q->tasklet);
return rc;
@ -1510,12 +1508,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
if (!irq_ptr)
return -ENODEV;
if (callflags & QDIO_FLAG_SYNC_INPUT)
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO input");
else
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO output");
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "q:%1d flag:%4x", q_nr, callflags);
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "buf:%2d cnt:%3d", bufnr, count);
DBF_DEV_EVENT(DBF_INFO, irq_ptr,
"do%02x b:%02x c:%02x", callflags, bufnr, count);
if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)
return -EBUSY;