commit 078ea3dfe396b18ccf608c71a9585b6f7e519bb1
author Trond Myklebust <Trond.Myklebust@netapp.com> Mon Aug 12 16:45:55 2013 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> Thu Aug 22 08:58:22 2013 -0400
tree 81f454091ab2e1847791de35f6fa8447e7e8c982
parent d1b748a5e71106481015e36ce327747b075bcbdc

NFSv4: Add tracepoints for debugging lookup/create operations

Set up basic tracepoints for debugging NFSv4 lookup, unlink/remove,
symlink, mkdir, mknod, fs_locations and secinfo.

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

fs/nfs/nfs4proc.c

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6d12c3e..3234758 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3026,6 +3026,7 @@
 	int err;
 	do {
 		err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
+		trace_nfs4_lookup(dir, name, err);
 		switch (err) {
 		case -NFS4ERR_BADNAME:
 			err = -ENOENT;
@@ -3261,8 +3262,9 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_remove(dir, name),
+		err = _nfs4_proc_remove(dir, name);
+		trace_nfs4_remove(dir, name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -3291,7 +3293,8 @@
 
 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
 {
-	struct nfs_removeres *res = task->tk_msg.rpc_resp;
+	struct nfs_unlinkdata *data = task->tk_calldata;
+	struct nfs_removeres *res = &data->res;
 
 	if (!nfs4_sequence_done(task, &res->seq_res))
 		return 0;
@@ -3533,9 +3536,9 @@
 	label = nfs4_label_init_security(dir, dentry, sattr, &l);
 
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_symlink(dir, dentry, page,
-							len, sattr, label),
+		err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
+		trace_nfs4_symlink(dir, &dentry->d_name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 
@@ -3572,8 +3575,9 @@
 
 	sattr->ia_mode &= ~current_umask();
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_mkdir(dir, dentry, sattr, label),
+		err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
+		trace_nfs4_mkdir(dir, &dentry->d_name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 	nfs4_label_release_security(label);
@@ -3680,8 +3684,9 @@
 
 	sattr->ia_mode &= ~current_umask();
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_mknod(dir, dentry, sattr, label, rdev),
+		err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
+		trace_nfs4_mknod(dir, &dentry->d_name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 
@@ -5801,8 +5806,10 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_fs_locations(client, dir, name, fs_locations, page),
+		err = _nfs4_proc_fs_locations(client, dir, name,
+				fs_locations, page);
+		trace_nfs4_get_fs_locations(dir, name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -5841,8 +5848,9 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_secinfo(dir, name, flavors),
+		err = _nfs4_proc_secinfo(dir, name, flavors);
+		trace_nfs4_secinfo(dir, name, err);
+		err = nfs4_handle_exception(NFS_SERVER(dir), err,
 				&exception);
 	} while (exception.retry);
 	return err;