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authorJan Glauber <jang@linux.vnet.ibm.com>2011-10-30 15:17:05 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 15:16:45 +0100
commita2b86019826cb97fd964fbaf101410c64cd78681 (patch)
treeda7659c2d90dcfd83d23ba3f432baa9f84aa80a2 /drivers/s390/cio/qdio.h
parent80376f347d70ce5fcfb98105d83624518e0911d6 (diff)
[S390] qdio: add timestamp for last queue scan time
Add a timestamp per queue and update the timestamp when the queue is scanned. Add the queue timestamps and the timestamp of the last adapter interrupt to the debugfs output. The timestamps are useful for debugging stall conditions. 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/qdio.h')
-rw-r--r--drivers/s390/cio/qdio.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 3dd86441da3d..c15624b76907 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -290,6 +290,9 @@ struct qdio_q {
/* error condition during a data transfer */
unsigned int qdio_error;
+ /* last scan of the queue */
+ u64 timestamp;
+
struct tasklet_struct tasklet;
struct qdio_queue_perf_stat q_stats;
@@ -449,6 +452,8 @@ static inline int shared_ind(struct qdio_q *q)
return references_shared_dsci(i) || has_multiple_inq_on_dsci(i);
}
+extern u64 last_ai_time;
+
/* prototypes for thin interrupt */
void qdio_setup_thinint(struct qdio_irq *irq_ptr);
int qdio_establish_thinint(struct qdio_irq *irq_ptr);