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[S390] qdio: add eqbs/sqbs instruction counters 

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 @@ 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, 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 @@ 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) {

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;