[PATCH 2/2] infiniband: trace force disconnections

[Ammar Ratnani <ammrat13@gmail.com>]

When we failed to send both a DREQ and a DREP, we have to infer that by
noting the absence of the `sent_dreq` and `sent_drep` trace events. It
would be better if we could see this case by the presence of a trace
event instead. Implement that.

Cc: Leon Romanovsky <leon@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Paulo Alcantara <pc@manguebit.org>
Cc: Stefan Metzmacher <metze@samba.org>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-rdma@vger.kernel.org
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ammar Ratnani <ammrat13@gmail.com>
---
 drivers/infiniband/core/cma.c       | 2 ++
 drivers/infiniband/core/cma_trace.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 1f1a8b4e160a..c4eab48a4a9f 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -4834,6 +4834,8 @@ static int cma_force_disconnect(struct rdma_id_private *id_priv)
 {
 	struct cma_work *work;
 
+	trace_cm_force_disconnect(id_priv);
+
 	work = kzalloc_obj(*work);
 	if (!work)
 		return -ENOMEM;
diff --git a/drivers/infiniband/core/cma_trace.h b/drivers/infiniband/core/cma_trace.h
index 3456d5f3aa47..3d05d8e80856 100644
--- a/drivers/infiniband/core/cma_trace.h
+++ b/drivers/infiniband/core/cma_trace.h
@@ -61,6 +61,7 @@ DEFINE_CMA_FSM_EVENT(send_sidr_rep);
 DEFINE_CMA_FSM_EVENT(disconnect);
 DEFINE_CMA_FSM_EVENT(sent_drep);
 DEFINE_CMA_FSM_EVENT(sent_dreq);
+DEFINE_CMA_FSM_EVENT(force_disconnect);
 DEFINE_CMA_FSM_EVENT(id_destroy);
 
 TRACE_EVENT(cm_id_attach,
-- 
2.55.0