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path: root/drivers/s390/cio/qdio_main.c
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Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
-rw-r--r--drivers/s390/cio/qdio_main.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 62b654af923..232ef047ba3 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -392,6 +392,20 @@ static inline void qdio_stop_polling(struct qdio_q *q)
set_buf_state(q, q->u.in.ack_start, SLSB_P_INPUT_NOT_INIT);
}
+static inline void account_sbals(struct qdio_q *q, int count)
+{
+ int pos = 0;
+
+ q->q_stats.nr_sbal_total += count;
+ if (count == QDIO_MAX_BUFFERS_MASK) {
+ q->q_stats.nr_sbals[7]++;
+ return;
+ }
+ while (count >>= 1)
+ pos++;
+ q->q_stats.nr_sbals[pos]++;
+}
+
static void announce_buffer_error(struct qdio_q *q, int count)
{
q->qdio_error |= QDIO_ERROR_SLSB_STATE;
@@ -487,16 +501,22 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
q->first_to_check = add_buf(q->first_to_check, count);
if (atomic_sub(count, &q->nr_buf_used) == 0)
qperf_inc(q, inbound_queue_full);
+ if (q->irq_ptr->perf_stat_enabled)
+ account_sbals(q, count);
break;
case SLSB_P_INPUT_ERROR:
announce_buffer_error(q, count);
/* process the buffer, the upper layer will take care of it */
q->first_to_check = add_buf(q->first_to_check, count);
atomic_sub(count, &q->nr_buf_used);
+ if (q->irq_ptr->perf_stat_enabled)
+ account_sbals_error(q, count);
break;
case SLSB_CU_INPUT_EMPTY:
case SLSB_P_INPUT_NOT_INIT:
case SLSB_P_INPUT_ACK:
+ if (q->irq_ptr->perf_stat_enabled)
+ q->q_stats.nr_sbal_nop++;
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop");
break;
default:
@@ -514,7 +534,7 @@ static int qdio_inbound_q_moved(struct qdio_q *q)
if ((bufnr != q->last_move) || q->qdio_error) {
q->last_move = bufnr;
- if (!is_thinint_irq(q->irq_ptr) && !MACHINE_IS_VM)
+ if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR)
q->u.in.timestamp = get_usecs();
return 1;
} else
@@ -643,15 +663,21 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
atomic_sub(count, &q->nr_buf_used);
q->first_to_check = add_buf(q->first_to_check, count);
+ if (q->irq_ptr->perf_stat_enabled)
+ account_sbals(q, count);
break;
case SLSB_P_OUTPUT_ERROR:
announce_buffer_error(q, count);
/* process the buffer, the upper layer will take care of it */
q->first_to_check = add_buf(q->first_to_check, count);
atomic_sub(count, &q->nr_buf_used);
+ if (q->irq_ptr->perf_stat_enabled)
+ account_sbals_error(q, count);
break;
case SLSB_CU_OUTPUT_PRIMED:
/* the adapter has not fetched the output yet */
+ if (q->irq_ptr->perf_stat_enabled)
+ q->q_stats.nr_sbal_nop++;
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr);
break;
case SLSB_P_OUTPUT_NOT_INIT: