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From:   Olga Kornievskaia <olga.kornievskaia@gmail.com>
To:     trond.myklebust@hammerspace.com, anna.schumaker@netapp.com,
        steved@redhat.com
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH 7/7] NFSv4.2 add tracepoint to OFFLOAD_CANCEL
Date:   Mon, 18 Oct 2021 18:03:14 -0400
Message-Id: <20211018220314.85115-8-olga.kornievskaia@gmail.com>
In-Reply-To: <20211018220314.85115-1-olga.kornievskaia@gmail.com>
References: <20211018220314.85115-1-olga.kornievskaia@gmail.com>
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From: Olga Kornievskaia <kolga@netapp.com>

Add tracepoint to OFFLOAD_CANCEL operation.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
 fs/nfs/nfs42proc.c |  1 +
 fs/nfs/nfs4trace.h | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 7c7399b10050..08355b66e7cb 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -509,6 +509,7 @@ static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs42_offloadcancel_data *data = calldata;
 
+	trace_nfs4_offload_cancel(&data->args, task->tk_status);
 	nfs41_sequence_done(task, &data->res.osr_seq_res);
 	if (task->tk_status &&
 		nfs4_async_handle_error(task, data->seq_server, NULL,
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 2741e12746b2..476420a7985a 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -2814,6 +2814,39 @@ TRACE_EVENT(nfs4_copy_notify,
 			__entry->res_stateid_seq, __entry->res_stateid_hash
 		)
 );
+
+TRACE_EVENT(nfs4_offload_cancel,
+		TP_PROTO(
+			const struct nfs42_offload_status_args *args,
+			int error
+		),
+
+		TP_ARGS(args, error),
+
+		TP_STRUCT__entry(
+			__field(unsigned long, error)
+			__field(u32, fhandle)
+			__field(int, stateid_seq)
+			__field(u32, stateid_hash)
+		),
+
+		TP_fast_assign(
+			__entry->fhandle = nfs_fhandle_hash(args->osa_src_fh);
+			__entry->error = error < 0 ? -error : 0;
+			__entry->stateid_seq =
+				be32_to_cpu(args->osa_stateid.seqid);
+			__entry->stateid_hash =
+				nfs_stateid_hash(&args->osa_stateid);
+		),
+
+		TP_printk(
+			"error=%ld (%s) fhandle=0x%08x stateid=%d:0x%08x",
+			-__entry->error,
+			show_nfsv4_errors(__entry->error),
+			__entry->fhandle,
+			__entry->stateid_seq, __entry->stateid_hash
+		)
+);
 #endif /* CONFIG_NFS_V4_1 */
 
 #endif /* _TRACE_NFS4_H */
-- 
2.27.0