[S390] qdio: outbound queue full counter

Add a counter for outbound queue full events to the qdio statistics.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 5 insertions, 0 deletions

diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index a77aa9109cfd..40ca0b9241e5 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -202,6 +202,7 @@ struct qdio_dev_perf_stat {
         unsigned int inbound_queue_full;
         unsigned int outbound_call;
         unsigned int outbound_handler;
+        unsigned int outbound_queue_full;
         unsigned int fast_requeue;
         unsigned int target_full;
         unsigned int eqbs;
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 28868e7471a5..f8b03a636e49 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -151,6 +151,7 @@ static char *qperf_names[] = {
         "Inbound queue full",
         "Outbound calls",
         "Outbound handler",
+        "Outbound queue full",
         "Outbound fast_requeue",
         "Outbound target_full",
         "QEBSM eqbs",
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 4c0109900c74..af86875bede4 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1447,6 +1447,9 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
         used = atomic_add_return(count, &q->nr_buf_used);
         BUG_ON(used > QDIO_MAX_BUFFERS_PER_Q);
 
+        if (used == QDIO_MAX_BUFFERS_PER_Q)
+                qperf_inc(q, outbound_queue_full);
+
         if (callflags & QDIO_FLAG_PCI_OUT) {
                 q->u.out.pci_out_enabled = 1;
                 qperf_inc(q, pci_request_int);