[RFC PATCH 2/4] NFS: Refactor trace_nfs4_offload_cancel

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

I'm about to add a trace_nfs4_offload_status trace point that looks
just like this one, so promote trace_nfs4_offload_cancel to a trace
class. A subsequent patch adds the new trace_nfs4_offload_status
tracepoint.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfs/nfs4trace.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 10985a4b8259..8f32dbf9c91d 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -2524,7 +2524,7 @@ TRACE_EVENT(nfs4_copy_notify,
 		)
 );
 
-TRACE_EVENT(nfs4_offload_cancel,
+DECLARE_EVENT_CLASS(nfs4_offload_class,
 		TP_PROTO(
 			const struct nfs42_offload_status_args *args,
 			int error
@@ -2556,6 +2556,14 @@ TRACE_EVENT(nfs4_offload_cancel,
 			__entry->stateid_seq, __entry->stateid_hash
 		)
 );
+#define DEFINE_NFS4_OFFLOAD_EVENT(name) \
+	DEFINE_EVENT(nfs4_offload_class, name,  \
+			TP_PROTO( \
+				const struct nfs42_offload_status_args *args, \
+				int error \
+			), \
+			TP_ARGS(args, error))
+DEFINE_NFS4_OFFLOAD_EVENT(nfs4_offload_cancel);
 
 DECLARE_EVENT_CLASS(nfs4_xattr_event,
 		TP_PROTO(
-- 
2.44.0