linux-kernel - [PATCH 3/3] nfsd: new tracepoint for after op

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Message-Id: <20241018-delstid-v1-3-c6021b75ff3e@kernel.org>
Date: Fri, 18 Oct 2024 14:45:01 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Chuck Lever <chuck.lever@...cle.com>, Neil Brown <neilb@...e.de>, 
 Olga Kornievskaia <okorniev@...hat.com>, Dai Ngo <Dai.Ngo@...cle.com>, 
 Tom Talpey <tom@...pey.com>
Cc: linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 3/3] nfsd: new tracepoint for after op_func in compound
 processing

Turn nfsd_compound_encode_err tracepoint into a class and add a new
nfsd_compound_op_err tracepoint.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/nfsd/nfs4proc.c |  1 +
 fs/nfsd/trace.h    | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index f843b56b7b2056cbb69669e50c9ca9797cb91f0f..a7912c53f3ca2ecf3e3ad7a93ff9c44507037595 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -2807,6 +2807,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
 		if (op->opdesc->op_get_currentstateid)
 			op->opdesc->op_get_currentstateid(cstate, &op->u);
 		op->status = op->opdesc->op_func(rqstp, cstate, &op->u);
+		trace_nfsd_compound_op_err(rqstp, op->opnum, op->status);
 
 		/* Only from SEQUENCE */
 		if (cstate->status == nfserr_replay_cache) {
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 3448e444d4100f8f4ce98189d8f605066aa10f49..f318898cfc31614b5a84a4867e18c2b3a07122c9 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -163,7 +163,7 @@ TRACE_EVENT(nfsd_compound_decode_err,
 		__entry->opnum, __entry->status)
 );
 
-TRACE_EVENT(nfsd_compound_encode_err,
+DECLARE_EVENT_CLASS(nfsd_compound_err_class,
 	TP_PROTO(
 		const struct svc_rqst *rqstp,
 		u32 opnum,
@@ -184,6 +184,18 @@ TRACE_EVENT(nfsd_compound_encode_err,
 		__entry->opnum, __entry->status)
 );
 
+#define DEFINE_NFSD_COMPOUND_ERR_EVENT(name)				\
+DEFINE_EVENT(nfsd_compound_err_class, nfsd_compound_##name##_err,	\
+	TP_PROTO(							\
+		const struct svc_rqst *rqstp,				\
+		u32 opnum,						\
+		__be32 status						\
+	),								\
+	TP_ARGS(rqstp, opnum, status))
+
+DEFINE_NFSD_COMPOUND_ERR_EVENT(op);
+DEFINE_NFSD_COMPOUND_ERR_EVENT(encode);
+
 #define show_fs_file_type(x) \
 	__print_symbolic(x, \
 		{ S_IFLNK,		"LNK" }, \

-- 
2.47.0