staging/lustre: Remove useless num_refs procfs variable

Every obd type registers it, but it's not really needed by anybody.
Remove all the supporting infrastructure too.
Signed-off-by: NOleg Drokin <green@linuxhacker.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/include/lprocfs_status.h

@@ -61,7 +61,6 @@ struct lprocfs_vars {
 };
 
 struct lprocfs_static_vars {
-	struct lprocfs_vars *module_vars;
 	struct lprocfs_vars *obd_vars;
 };
 
@@ -640,7 +639,6 @@ extern int lprocfs_rd_import(struct seq_file *m, void *data);
 extern int lprocfs_rd_state(struct seq_file *m, void *data);
 extern int lprocfs_rd_connect_flags(struct seq_file *m, void *data);
 extern int lprocfs_rd_num_exports(struct seq_file *m, void *data);
-extern int lprocfs_rd_numrefs(struct seq_file *m, void *data);
 
 struct adaptive_timeout;
 extern int lprocfs_at_hist_helper(struct seq_file *m,

drivers/staging/lustre/lustre/include/obd_class.h

@@ -75,8 +75,7 @@ struct lu_device_type;
 extern struct list_head obd_types;
 struct obd_export *class_conn2export(struct lustre_handle *);
 int class_register_type(struct obd_ops *, struct md_ops *,
-			struct lprocfs_vars *, const char *nm,
-			struct lu_device_type *ldt);
+			const char *nm, struct lu_device_type *ldt);
 int class_unregister_type(const char *nm);
 
 struct obd_device *class_newdev(const char *type_name, const char *name);

drivers/staging/lustre/lustre/llite/lproc_llite.c

@@ -1532,6 +1532,5 @@ LPROC_SEQ_FOPS(ll_rw_offset_stats);
 
 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
 {
-    lvars->module_vars  = NULL;
     lvars->obd_vars     = lprocfs_llite_obd_vars;
 }

drivers/staging/lustre/lustre/lmv/lmv_obd.c

@@ -2873,7 +2873,7 @@ static int __init lmv_init(void)
 	lprocfs_lmv_init_vars(&lvars);
 
 	rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
-				 lvars.module_vars, LUSTRE_LMV_NAME, NULL);
+				 LUSTRE_LMV_NAME, NULL);
 	return rc;
 }
 

drivers/staging/lustre/lustre/lmv/lproc_lmv.c

@@ -215,13 +215,6 @@ static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(lmv, numrefs);
-
-static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
-	{ "num_refs",	   &lmv_numrefs_fops, NULL, 0 },
-	{ NULL }
-};
-
 struct file_operations lmv_proc_target_fops = {
 	.owner		= THIS_MODULE,
 	.open		 = lmv_target_seq_open,
@@ -232,6 +225,5 @@ struct file_operations lmv_proc_target_fops = {
 
 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
 {
-	lvars->module_vars    = lprocfs_lmv_module_vars;
 	lvars->obd_vars       = lprocfs_lmv_obd_vars;
 }

drivers/staging/lustre/lustre/lov/lov_obd.c

@@ -2365,7 +2365,7 @@ static int __init lov_init(void)
 	}
 	lprocfs_lov_init_vars(&lvars);
 
-	rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars,
+	rc = class_register_type(&lov_obd_ops, NULL,
 				 LUSTRE_LOV_NAME, &lov_device_type);
 
 	if (rc) {

drivers/staging/lustre/lustre/lov/lproc_lov.c

@@ -289,16 +289,8 @@ static struct lprocfs_vars lprocfs_lov_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(lov, numrefs);
-
-static struct lprocfs_vars lprocfs_lov_module_vars[] = {
-	{ "num_refs",     &lov_numrefs_fops,     NULL, 0 },
-	{ NULL }
-};
-
 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
 {
-    lvars->module_vars  = lprocfs_lov_module_vars;
     lvars->obd_vars     = lprocfs_lov_obd_vars;
 }
 

drivers/staging/lustre/lustre/mdc/lproc_mdc.c

@@ -206,15 +206,7 @@ static struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(mdc, numrefs);
-
-static struct lprocfs_vars lprocfs_mdc_module_vars[] = {
-	{ "num_refs",		&mdc_numrefs_fops,		NULL, 0 },
-	{ NULL }
-};
-
 void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars)
 {
-	lvars->module_vars  = lprocfs_mdc_module_vars;
 	lvars->obd_vars     = lprocfs_mdc_obd_vars;
 }

drivers/staging/lustre/lustre/mdc/mdc_request.c

@@ -2713,7 +2713,7 @@ static int __init mdc_init(void)
 
 	lprocfs_mdc_init_vars(&lvars);
 
-	return class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
+	return class_register_type(&mdc_obd_ops, &mdc_md_ops,
 				 LUSTRE_MDC_NAME, NULL);
 }
 

drivers/staging/lustre/lustre/mgc/lproc_mgc.c

@@ -67,14 +67,7 @@ static struct lprocfs_vars lprocfs_mgc_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(mgc, numrefs);
-static struct lprocfs_vars lprocfs_mgc_module_vars[] = {
-	{ "num_refs",	&mgc_numrefs_fops,       NULL, 0 },
-	{ NULL }
-};
-
 void lprocfs_mgc_init_vars(struct lprocfs_static_vars *lvars)
 {
-	lvars->module_vars = lprocfs_mgc_module_vars;
 	lvars->obd_vars    = lprocfs_mgc_obd_vars;
 }

drivers/staging/lustre/lustre/mgc/mgc_request.c

@@ -1745,7 +1745,7 @@ struct obd_ops mgc_obd_ops = {
 
 static int __init mgc_init(void)
 {
-	return class_register_type(&mgc_obd_ops, NULL, NULL,
+	return class_register_type(&mgc_obd_ops, NULL,
 				   LUSTRE_MGC_NAME, NULL);
 }
 

drivers/staging/lustre/lustre/obdclass/genops.c

@@ -156,7 +156,7 @@ EXPORT_SYMBOL(class_put_type);
 #define CLASS_MAX_NAME 1024
 
 int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
-			struct lprocfs_vars *vars, const char *name,
+			const char *name,
 			struct lu_device_type *ldt)
 {
 	struct obd_type *type;
@@ -192,7 +192,7 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
 	spin_lock_init(&type->obd_type_lock);
 
 	type->typ_procroot = lprocfs_register(type->typ_name, proc_lustre_root,
-					      vars, type);
+					      NULL, type);
 	if (IS_ERR(type->typ_procroot)) {
 		rc = PTR_ERR(type->typ_procroot);
 		type->typ_procroot = NULL;

drivers/staging/lustre/lustre/obdclass/lprocfs_status.c

@@ -1004,16 +1004,6 @@ int lprocfs_rd_num_exports(struct seq_file *m, void *data)
 }
 EXPORT_SYMBOL(lprocfs_rd_num_exports);
 
-int lprocfs_rd_numrefs(struct seq_file *m, void *data)
-{
-	struct obd_type *class = (struct obd_type *) data;
-
-	LASSERT(class != NULL);
-	seq_printf(m, "%d\n", class->typ_refcnt);
-	return 0;
-}
-EXPORT_SYMBOL(lprocfs_rd_numrefs);
-
 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
 {
 	int rc = 0;

drivers/staging/lustre/lustre/obdecho/echo_client.c

@@ -2149,7 +2149,6 @@ int echo_client_init(void)
 	rc = lu_kmem_init(echo_caches);
 	if (rc == 0) {
 		rc = class_register_type(&echo_client_obd_ops, NULL,
-					 lvars.module_vars,
 					 LUSTRE_ECHO_CLIENT_NAME,
 					 &echo_device_type);
 		if (rc)

drivers/staging/lustre/lustre/obdecho/lproc_echo.c

@@ -43,15 +43,8 @@ static struct lprocfs_vars lprocfs_echo_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(echo, numrefs);
-static struct lprocfs_vars lprocfs_echo_module_vars[] = {
-	{ "num_refs",     &echo_numrefs_fops,     NULL, 0 },
-	{ NULL }
-};
-
 void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 {
-	lvars->module_vars  = lprocfs_echo_module_vars;
 	lvars->obd_vars     = lprocfs_echo_obd_vars;
 }
 #endif /* CONFIG_PROC_FS */

drivers/staging/lustre/lustre/osc/lproc_osc.c

@@ -573,12 +573,6 @@ static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 	{ NULL }
 };
 
-LPROC_SEQ_FOPS_RO_TYPE(osc, numrefs);
-static struct lprocfs_vars lprocfs_osc_module_vars[] = {
-	{ "num_refs",	&osc_numrefs_fops,     NULL, 0 },
-	{ NULL }
-};
-
 #define pct(a, b) (b ? a * 100 / b : 0)
 
 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
@@ -746,6 +740,5 @@ int lproc_osc_attach_seqstat(struct obd_device *dev)
 
 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 {
-	lvars->module_vars = lprocfs_osc_module_vars;
 	lvars->obd_vars    = lprocfs_osc_obd_vars;
 }

drivers/staging/lustre/lustre/osc/osc_request.c

@@ -3351,7 +3351,7 @@ static int __init osc_init(void)
 
 	lprocfs_osc_init_vars(&lvars);
 
-	rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
+	rc = class_register_type(&osc_obd_ops, NULL,
 				 LUSTRE_OSC_NAME, &osc_device_type);
 	if (rc) {
 		lu_kmem_fini(osc_caches);