[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>

diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 7572a005762370b38ac996daf1a33546dc5f649d..a44a8c5b91beb7f79597db31343675242dd0e249 100644 (file)
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -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) {

diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
index ec5c4a41423521bfa30c06f64aee6e5ae75597f6..bec01100f8e82fc9582544bb3b232449601fa493 100644 (file)
--- a/drivers/s390/cio/qdio_perf.c
+++ b/drivers/s390/cio/qdio_perf.c
@@ -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;
 }

diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h
index 5c406a8b73870127c4be66fa8c0ef8ed8aa0619f..d16c1c67160fffdfdfee74e030484b676a108a71 100644 (file)
--- a/drivers/s390/cio/qdio_perf.h
+++ b/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;