linux-kernel - [PATCH 5/7] IB/hfi1: Add trace message in user IOCTL handling

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Date:	Thu, 14 Apr 2016 08:42:05 -0700
From:	Dennis Dalessandro <dennis.dalessandro@...el.com>
To:	dledford@...hat.com
Cc:	linux-rdma@...r.kernel.org, Ira Weiny <ira.weiny@...el.com>,
	linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk,
	linux-fsdevel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: [PATCH 5/7] IB/hfi1: Add trace message in user IOCTL handling

Add a trace message to HFI1s user IOCTL handling. This allows debugging
of which IOCTLs are being handled by the driver.

Reviewed-by: Ira Weiny <ira.weiny@...el.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@...el.com>
---
 drivers/staging/rdma/hfi1/file_ops.c |    2 ++
 drivers/staging/rdma/hfi1/trace.c    |    1 +
 drivers/staging/rdma/hfi1/trace.h    |    1 +
 3 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/rdma/hfi1/file_ops.c b/drivers/staging/rdma/hfi1/file_ops.c
index c8c1acd..26f3d8f 100644
--- a/drivers/staging/rdma/hfi1/file_ops.c
+++ b/drivers/staging/rdma/hfi1/file_ops.c
@@ -193,6 +193,8 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
 	if (ret)
 		return ret;
 
+	hfi1_cdbg(IOCTL, "IOCTL recv: 0x%x", cmd);
+
 	switch (cmd) {
 	case HFI1_IOCTL_ASSIGN_CTXT:
 		uctxt_required = 0; /* assigned user context not required */
diff --git a/drivers/staging/rdma/hfi1/trace.c b/drivers/staging/rdma/hfi1/trace.c
index 8b62fef..caddb2a 100644
--- a/drivers/staging/rdma/hfi1/trace.c
+++ b/drivers/staging/rdma/hfi1/trace.c
@@ -233,3 +233,4 @@ __hfi1_trace_fn(FIRMWARE);
 __hfi1_trace_fn(RCVCTRL);
 __hfi1_trace_fn(TID);
 __hfi1_trace_fn(MMU);
+__hfi1_trace_fn(IOCTL);
diff --git a/drivers/staging/rdma/hfi1/trace.h b/drivers/staging/rdma/hfi1/trace.h
index 963dc94..3cb0391 100644
--- a/drivers/staging/rdma/hfi1/trace.h
+++ b/drivers/staging/rdma/hfi1/trace.h
@@ -1341,6 +1341,7 @@ __hfi1_trace_def(FIRMWARE);
 __hfi1_trace_def(RCVCTRL);
 __hfi1_trace_def(TID);
 __hfi1_trace_def(MMU);
+__hfi1_trace_def(IOCTL);
 
 #define hfi1_cdbg(which, fmt, ...) \
 	__hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__)