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Commit 078ea3df authored by Trond Myklebust's avatar Trond Myklebust
Browse files

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: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent d1b748a5

fs/nfs/nfs4proc.c

+22 −14
Original line number Diff line number Diff line
@@ -3026,6 +3026,7 @@ static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, 
	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 @@ static int nfs4_proc_remove(struct inode *dir, struct qstr *name) 
	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 void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlin 


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 @@ static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, 
	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 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, 


	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 @@ static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, 


	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 @@ int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, 
	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 @@ int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, 
	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;

fs/nfs/nfs4trace.h

+50 −0
Original line number Diff line number Diff line
@@ -411,6 +411,56 @@ DEFINE_NFS4_LOCK_EVENT(nfs4_lock_reclaim); 
DEFINE_NFS4_LOCK_EVENT(nfs4_lock_expired);

DEFINE_NFS4_LOCK_EVENT(nfs4_unlock);



DECLARE_EVENT_CLASS(nfs4_lookup_event,

		TP_PROTO(

			const struct inode *dir,

			const struct qstr *name,

			int error

		),



		TP_ARGS(dir, name, error),



		TP_STRUCT__entry(

			__field(dev_t, dev)

			__field(int, error)

			__field(u64, dir)

			__string(name, name->name)

		),



		TP_fast_assign(

			__entry->dev = dir->i_sb->s_dev;

			__entry->dir = NFS_FILEID(dir);

			__entry->error = error;

			__assign_str(name, name->name);

		),



		TP_printk(

			"error=%d (%s) name=%02x:%02x:%llu/%s",

			__entry->error,

			show_nfsv4_errors(__entry->error),

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->dir,

			__get_str(name)

		)

);



#define DEFINE_NFS4_LOOKUP_EVENT(name) \

	DEFINE_EVENT(nfs4_lookup_event, name, \

			TP_PROTO( \

				const struct inode *dir, \

				const struct qstr *name, \

				int error \

			), \

			TP_ARGS(dir, name, error))



DEFINE_NFS4_LOOKUP_EVENT(nfs4_lookup);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_symlink);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_mkdir);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_mknod);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_remove);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_get_fs_locations);

DEFINE_NFS4_LOOKUP_EVENT(nfs4_secinfo);



#endif /* _TRACE_NFS4_H */



#undef TRACE_INCLUDE_PATH