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Subject[patch 11/60] qdio: add eqbs/sqbs instruction counters
From: Jan Glauber <jang@linux.vnet.ibm.com>

Add counters for the eqbs and sqbs instructions that indicate how often
we issued the instructions and how often the instructions returned with
less buffers than specified.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
drivers/s390/cio/qdio_main.c | 7 ++++++-
drivers/s390/cio/qdio_perf.c | 6 ++++++
drivers/s390/cio/qdio_perf.h | 4 ++++
3 files changed, 16 insertions(+), 1 deletion(-)
Index: quilt-2.6/drivers/s390/cio/qdio_main.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio_main.c
+++ quilt-2.6/drivers/s390/cio/qdio_main.c
@@ -129,6 +129,7 @@ static int qdio_do_eqbs(struct qdio_q *q
char dbf_text[15];

BUG_ON(!q->irq_ptr->sch_token);
+ qdio_perf_stat_inc(&perf_stats.debug_eqbs_all);

if (!q->is_input_q)
nr += q->irq_ptr->nr_input_qs;
@@ -139,8 +140,10 @@ again:
/* At least one buffer was processed, return and extract the remaining
* buffers later.
*/
- if ((ccq == 96) && (count != tmp_count))
+ if ((ccq == 96) && (count != tmp_count)) {
+ qdio_perf_stat_inc(&perf_stats.debug_eqbs_incomplete);
return (count - tmp_count);
+ }
if (rc == 1) {
QDIO_DBF_TEXT5(1, trace, "eqAGAIN");
goto again;
@@ -179,6 +182,7 @@ static int qdio_do_sqbs(struct qdio_q *q
char dbf_text[15];

BUG_ON(!q->irq_ptr->sch_token);
+ qdio_perf_stat_inc(&perf_stats.debug_sqbs_all);

if (!q->is_input_q)
nr += q->irq_ptr->nr_input_qs;
@@ -187,6 +191,7 @@ again:
rc = qdio_check_ccq(q, ccq);
if (rc == 1) {
QDIO_DBF_TEXT5(1, trace, "sqAGAIN");
+ qdio_perf_stat_inc(&perf_stats.debug_sqbs_incomplete);
goto again;
}
if (rc < 0) {
Index: quilt-2.6/drivers/s390/cio/qdio_perf.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio_perf.c
+++ quilt-2.6/drivers/s390/cio/qdio_perf.c
@@ -80,6 +80,12 @@ static int qdio_perf_proc_show(struct se
(long)atomic_long_read(&perf_stats.debug_stop_polling));
seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n",
(long)atomic_long_read(&perf_stats.thinint_inbound_loop2));
+ seq_printf(m, "QEBSM EQBS total/incomplete\t\t\t: %li/%li\n",
+ (long)atomic_long_read(&perf_stats.debug_eqbs_all),
+ (long)atomic_long_read(&perf_stats.debug_eqbs_incomplete));
+ seq_printf(m, "QEBSM SQBS total/incomplete\t\t\t: %li/%li\n",
+ (long)atomic_long_read(&perf_stats.debug_sqbs_all),
+ (long)atomic_long_read(&perf_stats.debug_sqbs_incomplete));
seq_printf(m, "\n");
return 0;
}
Index: quilt-2.6/drivers/s390/cio/qdio_perf.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio_perf.h
+++ quilt-2.6/drivers/s390/cio/qdio_perf.h
@@ -40,6 +40,10 @@ struct qdio_perf_stats {
/* for debugging */
atomic_long_t debug_tl_out_timer;
atomic_long_t debug_stop_polling;
+ atomic_long_t debug_eqbs_all;
+ atomic_long_t debug_eqbs_incomplete;
+ atomic_long_t debug_sqbs_all;
+ atomic_long_t debug_sqbs_incomplete;
};

extern struct qdio_perf_stats perf_stats;
--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.



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