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From:   Jeff Layton <jlayton@kernel.org>
To:     chuck.lever@oracle.com
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH 1/3] nfsd: add new tracepoint in nfsd_open_break_lease
Date:   Fri, 29 Jul 2022 12:47:13 -0400
Message-Id: <20220729164715.75702-1-jlayton@kernel.org>
MIME-Version: 1.0
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Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/nfsd/trace.h | 16 ++++++++++++++++
 fs/nfsd/vfs.c   |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 96bb6629541e..38fb1ca31010 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -531,6 +531,22 @@ DEFINE_STATEID_EVENT(open);
 DEFINE_STATEID_EVENT(deleg_read);
 DEFINE_STATEID_EVENT(deleg_recall);
 
+TRACE_EVENT(nfsd_open_break_lease,
+	TP_PROTO(struct inode *inode,
+		 int access),
+	TP_ARGS(inode, access),
+	TP_STRUCT__entry(
+		__field(void *, inode)
+		__field(int, access)
+	),
+	TP_fast_assign(
+		__entry->inode = inode;
+		__entry->access = access;
+	),
+	TP_printk("inode=%p access=%s", __entry->inode,
+		  show_nfsd_may_flags(__entry->access))
+)
+
 DECLARE_EVENT_CLASS(nfsd_stateseqid_class,
 	TP_PROTO(u32 seqid, const stateid_t *stp),
 	TP_ARGS(seqid, stp),
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d79db56475d4..0edfe6ff7d22 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -729,6 +729,8 @@ int nfsd_open_break_lease(struct inode *inode, int access)
 {
 	unsigned int mode;
 
+	trace_nfsd_open_break_lease(inode, access);
+
 	if (access & NFSD_MAY_NOT_BREAK_LEASE)
 		return 0;
 	mode = (access & NFSD_MAY_WRITE) ? O_WRONLY : O_RDONLY;
-- 
2.37.1