NFSv4: Add tracepoints for debugging inode manipulations

Set up basic tracepoints for debugging NFSv4 setattr, access,
readlink, readdir, get_acl set_acl get_security_label,
and set_security_label.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 2646a50a8208..6bd65c2c820b 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -461,6 +461,57 @@ DEFINE_NFS4_LOOKUP_EVENT(nfs4_remove);
 DEFINE_NFS4_LOOKUP_EVENT(nfs4_get_fs_locations);
 DEFINE_NFS4_LOOKUP_EVENT(nfs4_secinfo);
 
+DECLARE_EVENT_CLASS(nfs4_inode_event,
+                TP_PROTO(
+                        const struct inode *inode,
+                        int error
+                ),
+
+                TP_ARGS(inode, error),
+
+                TP_STRUCT__entry(
+                        __field(dev_t, dev)
+                        __field(u32, fhandle)
+                        __field(u64, fileid)
+                        __field(int, error)
+                ),
+
+                TP_fast_assign(
+                        __entry->dev = inode->i_sb->s_dev;
+                        __entry->fileid = NFS_FILEID(inode);
+                        __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
+                        __entry->error = error;
+                ),
+
+                TP_printk(
+                        "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x",
+                        __entry->error,
+                        show_nfsv4_errors(__entry->error),
+                        MAJOR(__entry->dev), MINOR(__entry->dev),
+                        (unsigned long long)__entry->fileid,
+                        __entry->fhandle
+                )
+);
+
+#define DEFINE_NFS4_INODE_EVENT(name) \
+        DEFINE_EVENT(nfs4_inode_event, name, \
+                        TP_PROTO( \
+                                const struct inode *inode, \
+                                int error \
+                        ), \
+                        TP_ARGS(inode, error))
+
+DEFINE_NFS4_INODE_EVENT(nfs4_setattr);
+DEFINE_NFS4_INODE_EVENT(nfs4_access);
+DEFINE_NFS4_INODE_EVENT(nfs4_readlink);
+DEFINE_NFS4_INODE_EVENT(nfs4_readdir);
+DEFINE_NFS4_INODE_EVENT(nfs4_get_acl);
+DEFINE_NFS4_INODE_EVENT(nfs4_set_acl);
+#ifdef CONFIG_NFS_V4_SECURITY_LABEL
+DEFINE_NFS4_INODE_EVENT(nfs4_get_security_label);
+DEFINE_NFS4_INODE_EVENT(nfs4_set_security_label);
+#endif /* CONFIG_NFS_V4_SECURITY_LABEL */
+
 #endif /* _TRACE_NFS4_H */
 
 #undef TRACE_INCLUDE_PATH