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From: Eddie James <eajames@linux.ibm.com>
To: linux-fsi@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
        devicetree@vger.kernel.org, andi.shyti@kernel.org,
        eajames@linux.ibm.com, alistair@popple.id.au, joel@jms.id.au,
        jk@ozlabs.org, robh@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        conor+dt@kernel.org, lakshmiy@us.ibmcom
Subject: [PATCH v2 06/31] fsi: core: Improve master read/write/error traces
Date: Mon, 26 Feb 2024 10:52:56 -0600
Message-Id: <20240226165321.91976-7-eajames@linux.ibm.com>
In-Reply-To: <20240226165321.91976-1-eajames@linux.ibm.com>
References: <20240226165321.91976-1-eajames@linux.ibm.com>
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Consolidate the master read and write traces into one trace and
change the result trace into an error trace for less spam.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
 drivers/fsi/fsi-core.c     |  26 +++++----
 include/trace/events/fsi.h | 112 ++++++++++++-------------------------
 2 files changed, 51 insertions(+), 87 deletions(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 9610b5948550..a989a2007c0f 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -1110,14 +1110,15 @@ static int fsi_master_read(struct fsi_master *master, int link,
 {
 	int rc;
 
-	trace_fsi_master_read(master, link, slave_id, addr, size);
-
 	rc = fsi_check_access(addr, size);
-	if (!rc)
+	if (!rc) {
 		rc = master->read(master, link, slave_id, addr, val, size);
-
-	trace_fsi_master_rw_result(master, link, slave_id, addr, size,
-			false, val, rc);
+		if (rc)
+			trace_fsi_master_error(master->idx, link, slave_id, addr, size, val, rc,
+					       true);
+		else
+			trace_fsi_master_xfer(master->idx, link, slave_id, addr, size, val, true);
+	}
 
 	return rc;
 }
@@ -1127,14 +1128,15 @@ static int fsi_master_write(struct fsi_master *master, int link,
 {
 	int rc;
 
-	trace_fsi_master_write(master, link, slave_id, addr, size, val);
-
 	rc = fsi_check_access(addr, size);
-	if (!rc)
+	if (!rc) {
 		rc = master->write(master, link, slave_id, addr, val, size);
-
-	trace_fsi_master_rw_result(master, link, slave_id, addr, size,
-			true, val, rc);
+		if (rc)
+			trace_fsi_master_error(master->idx, link, slave_id, addr, size, val, rc,
+					       false);
+		else
+			trace_fsi_master_xfer(master->idx, link, slave_id, addr, size, val, false);
+	}
 
 	return rc;
 }
diff --git a/include/trace/events/fsi.h b/include/trace/events/fsi.h
index 5ff15126ad9d..fed8835f438e 100644
--- a/include/trace/events/fsi.h
+++ b/include/trace/events/fsi.h
@@ -8,101 +8,63 @@
 
 #include <linux/tracepoint.h>
 
-TRACE_EVENT(fsi_master_read,
-	TP_PROTO(const struct fsi_master *master, int link, int id,
-			uint32_t addr, size_t size),
-	TP_ARGS(master, link, id, addr, size),
+TRACE_EVENT(fsi_master_xfer,
+	TP_PROTO(int master_idx, int link, int id, uint32_t addr, size_t size, const void *data,
+		 bool read),
+	TP_ARGS(master_idx, link, id, addr, size, data, read),
 	TP_STRUCT__entry(
-		__field(int,	master_idx)
-		__field(int,	link)
-		__field(int,	id)
-		__field(__u32,	addr)
-		__field(size_t,	size)
+		__field(int, master_idx)
+		__field(int, link)
+		__field(int, id)
+		__field(uint32_t, addr)
+		__field(int, size)
+		__field(uint32_t, data)
+		__field(bool, read)
 	),
 	TP_fast_assign(
-		__entry->master_idx = master->idx;
+		__entry->master_idx = master_idx;
 		__entry->link = link;
 		__entry->id = id;
 		__entry->addr = addr;
-		__entry->size = size;
-	),
-	TP_printk("fsi%d:%02d:%02d %08x[%zu]",
-		__entry->master_idx,
-		__entry->link,
-		__entry->id,
-		__entry->addr,
-		__entry->size
-	)
-);
-
-TRACE_EVENT(fsi_master_write,
-	TP_PROTO(const struct fsi_master *master, int link, int id,
-			uint32_t addr, size_t size, const void *data),
-	TP_ARGS(master, link, id, addr, size, data),
-	TP_STRUCT__entry(
-		__field(int,	master_idx)
-		__field(int,	link)
-		__field(int,	id)
-		__field(__u32,	addr)
-		__field(size_t,	size)
-		__field(__u32,	data)
-	),
-	TP_fast_assign(
-		__entry->master_idx = master->idx;
-		__entry->link = link;
-		__entry->id = id;
-		__entry->addr = addr;
-		__entry->size = size;
+		__entry->size = (int)size;
 		__entry->data = 0;
 		memcpy(&__entry->data, data, size);
+		__entry->read = read;
 	),
-	TP_printk("fsi%d:%02d:%02d %08x[%zu] <= {%*ph}",
-		__entry->master_idx,
-		__entry->link,
-		__entry->id,
-		__entry->addr,
-		__entry->size,
-		(int)__entry->size, &__entry->data
-	)
+	TP_printk("fsi%d:%02d:%02d %s %08x {%*ph}", __entry->master_idx, __entry->link,
+		  __entry->id, __entry->read ? "read" : "write", __entry->addr, __entry->size,
+		  &__entry->data)
 );
 
-TRACE_EVENT(fsi_master_rw_result,
-	TP_PROTO(const struct fsi_master *master, int link, int id,
-			uint32_t addr, size_t size,
-			bool write, const void *data, int ret),
-	TP_ARGS(master, link, id, addr, size, write, data, ret),
+TRACE_EVENT(fsi_master_error,
+	TP_PROTO(int master_idx, int link, int id, uint32_t addr, size_t size, const void *data,
+		 int ret, bool read),
+	TP_ARGS(master_idx, link, id, addr, size, data, ret, read),
 	TP_STRUCT__entry(
-		__field(int,	master_idx)
-		__field(int,	link)
-		__field(int,	id)
-		__field(__u32,	addr)
-		__field(size_t,	size)
-		__field(bool,	write)
-		__field(__u32,	data)
-		__field(int,	ret)
+		__field(int, master_idx)
+		__field(int, link)
+		__field(int, id)
+		__field(uint32_t, addr)
+		__field(int, size)
+		__field(uint32_t, data)
+		__field(int, ret)
+		__field(bool, read)
 	),
 	TP_fast_assign(
-		__entry->master_idx = master->idx;
+		__entry->master_idx = master_idx;
 		__entry->link = link;
 		__entry->id = id;
 		__entry->addr = addr;
-		__entry->size = size;
-		__entry->write = write;
+		__entry->size = (int)size;
 		__entry->data = 0;
-		__entry->ret = ret;
-		if (__entry->write || !__entry->ret)
+		if (!read)
 			memcpy(&__entry->data, data, size);
+		__entry->ret = ret;
+		__entry->read = read;
 	),
-	TP_printk("fsi%d:%02d:%02d %08x[%zu] %s {%*ph} ret %d",
-		__entry->master_idx,
-		__entry->link,
-		__entry->id,
-		__entry->addr,
-		__entry->size,
-		__entry->write ? "<=" : "=>",
-		(int)__entry->size, &__entry->data,
-		__entry->ret
-	)
+	TP_printk("fsi%d:%02d:%02d %s %08x {%*ph} %d", __entry->master_idx, __entry->link,
+		  __entry->id, __entry->read ? "read" : "write", __entry->addr, __entry->size,
+		  &__entry->data, __entry->ret)
 );
 
 TRACE_EVENT(fsi_master_break,
-- 
2.39.3