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authorJan Glauber <jang@linux.vnet.ibm.com>2011-01-05 12:47:51 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:28 +0100
commit0195843bfda90a215f3b72c9aac2fd0bc9244b67 (patch)
treec5767e7797814d0e76ea6d064d2c6fac088b25e8 /drivers/s390/cio
parent3d6c76ff32bb9b2ebf6e859855d315eb42e3df50 (diff)
[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>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/qdio.h1
-rw-r--r--drivers/s390/cio/qdio_debug.c1
-rw-r--r--drivers/s390/cio/qdio_main.c3
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);