nfsd: Add "nfsd_" to trace point names

Follow naming convention used in client and in sunrpc layers.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 9b79506..30e0485 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -35,7 +35,7 @@ DECLARE_EVENT_CLASS(nfsd_io_class,
 )
 
 #define DEFINE_NFSD_IO_EVENT(name)		\
-DEFINE_EVENT(nfsd_io_class, name,		\
+DEFINE_EVENT(nfsd_io_class, nfsd_##name,	\
 	TP_PROTO(struct svc_rqst *rqstp,	\
 		 struct svc_fh	*fhp,		\
 		 loff_t		offset,		\
@@ -76,7 +76,7 @@ DECLARE_EVENT_CLASS(nfsd_stateid_class,
 )
 
 #define DEFINE_STATEID_EVENT(name) \
-DEFINE_EVENT(nfsd_stateid_class, name, \
+DEFINE_EVENT(nfsd_stateid_class, nfsd_##name, \
 	TP_PROTO(stateid_t *stp), \
 	TP_ARGS(stp))
 DEFINE_STATEID_EVENT(layoutstate_alloc);