locks: add tracepoint in flock codepath

Signed-off-by: Jeff Layton <jlayton@kernel.org>

fs/locks.c

@@ -990,6 +990,7 @@ out:
 	if (new_fl)
 		locks_free_lock(new_fl);
 	locks_dispose_list(&dispose);
+	trace_flock_lock_inode(inode, request, error);
 	return error;
 }
 

include/trace/events/filelock.h

@@ -112,8 +112,11 @@ DEFINE_EVENT(filelock_lock, locks_remove_posix,
 		TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
 		TP_ARGS(inode, fl, ret));
 
-DECLARE_EVENT_CLASS(filelock_lease,
+DEFINE_EVENT(filelock_lock, flock_lock_inode,
+		TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
+		TP_ARGS(inode, fl, ret));
 
+DECLARE_EVENT_CLASS(filelock_lease,
 	TP_PROTO(struct inode *inode, struct file_lock *fl),
 
 	TP_ARGS(inode, fl),