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[S390] qdio: add eqbs/sqbs instruction counters

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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>
This commit is contained in:
Jan Glauber 2008-12-25 13:38:44 +01:00 committed by Martin Schwidefsky
parent bbd50e172f
commit 23589d057a
3 changed files with 16 additions and 1 deletions
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7
drivers/s390/cio/qdio_main.c
View file

@ -129,6 +129,7 @@ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
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 @@ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
/* 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, unsigned char state, int start,
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 @@ static int qdio_do_sqbs(struct qdio_q *q, unsigned char state, int start,
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) {

6
drivers/s390/cio/qdio_perf.c
View file

@ -80,6 +80,12 @@ static int qdio_perf_proc_show(struct seq_file *m, void *v)
(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;
}

4
drivers/s390/cio/qdio_perf.h
View file

@ -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;