netdev - [patch net-next 1/2] tracing: change owner name to driver name for devlink hwmsg tracepoint

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Date:	Thu, 14 Jul 2016 11:37:28 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, arnd@...db.de, rdunlap@...radead.org,
	linux-kernel@...r.kernel.org, idosch@...lanox.com,
	yotamg@...lanox.com, eladr@...lanox.com, nogahf@...lanox.com,
	ogerlitz@...lanox.com, ivecera@...hat.com, rostedt@...dmis.org,
	mingo@...hat.com, jolsa@...nel.org
Subject: [patch net-next 1/2] tracing: change owner name to driver name for devlink hwmsg tracepoint

From: Jiri Pirko <jiri@...lanox.com>

Turned on that driver->owner which is struct module is not available when
modules are disabled. Better to depend on a driver name which is
always available.

Reported-by: Randy Dunlap <rdunlap@...radead.org>
Fixes: e5224f0fe2 ("devlink: add hardware messages tracing facility")
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 include/trace/events/devlink.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/trace/events/devlink.h b/include/trace/events/devlink.h
index 333c32a..77dce71 100644
--- a/include/trace/events/devlink.h
+++ b/include/trace/events/devlink.h
@@ -22,7 +22,7 @@ TRACE_EVENT(devlink_hwmsg,
 	TP_STRUCT__entry(
 		__string(bus_name, devlink->dev->bus->name)
 		__string(dev_name, dev_name(devlink->dev))
-		__string(owner_name, devlink->dev->driver->owner->name)
+		__string(driver_name, devlink->dev->driver->name)
 		__field(bool, incoming)
 		__field(unsigned long, type)
 		__dynamic_array(u8, buf, len)
@@ -32,16 +32,16 @@ TRACE_EVENT(devlink_hwmsg,
 	TP_fast_assign(
 		__assign_str(bus_name, devlink->dev->bus->name);
 		__assign_str(dev_name, dev_name(devlink->dev));
-		__assign_str(owner_name, devlink->dev->driver->owner->name);
+		__assign_str(driver_name, devlink->dev->driver->name);
 		__entry->incoming = incoming;
 		__entry->type = type;
 		memcpy(__get_dynamic_array(buf), buf, len);
 		__entry->len = len;
 	),
 
-	TP_printk("bus_name=%s dev_name=%s owner_name=%s incoming=%d type=%lu buf=0x[%*phD] len=%lu",
+	TP_printk("bus_name=%s dev_name=%s driver_name=%s incoming=%d type=%lu buf=0x[%*phD] len=%lu",
 		  __get_str(bus_name), __get_str(dev_name),
-		  __get_str(owner_name), __entry->incoming, __entry->type,
+		  __get_str(driver_name), __entry->incoming, __entry->type,
 		  (int) __entry->len, __get_dynamic_array(buf), __entry->len)
 );
 
-- 
2.5.5