#include <lustre_disk.h>
#include <lustre_kernelcomm.h>
-static DEFINE_SPINLOCK(obd_types_lock);
-static LIST_HEAD(obd_types);
DEFINE_RWLOCK(obd_dev_lock);
static struct obd_device *obd_devs[MAX_OBD_DEVICES];
static struct kmem_cache *obd_device_cachep;
-
+static struct kobj_type class_ktype;
static struct workqueue_struct *zombie_wq;
static void obd_zombie_export_add(struct obd_export *exp);
struct obd_type *class_search_type(const char *name)
{
- struct list_head *tmp;
- struct obd_type *type;
+ struct kobject *kobj = kset_find_obj(lustre_kset, name);
- spin_lock(&obd_types_lock);
- list_for_each(tmp, &obd_types) {
- type = list_entry(tmp, struct obd_type, typ_chain);
- if (strcmp(type->typ_name, name) == 0) {
- spin_unlock(&obd_types_lock);
- return type;
- }
- }
- spin_unlock(&obd_types_lock);
+ if (kobj && kobj->ktype == &class_ktype)
+ return container_of(kobj, struct obd_type, typ_kobj);
+
+ kobject_put(kobj);
return NULL;
}
EXPORT_SYMBOL(class_search_type);
struct obd_type *class_get_type(const char *name)
{
- struct obd_type *type = class_search_type(name);
+ struct obd_type *type;
+ type = class_search_type(name);
#ifdef HAVE_MODULE_LOADING_SUPPORT
if (!type) {
const char *modname = name;
+#ifdef HAVE_SERVER_SUPPORT
if (strcmp(modname, "obdfilter") == 0)
modname = "ofd";
if (!strncmp(modname, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME)))
modname = LUSTRE_MDT_NAME;
+#endif /* HAVE_SERVER_SUPPORT */
if (!request_module("%s", modname)) {
CDEBUG(D_INFO, "Loaded module '%s'\n", modname);
type->typ_refcnt++;
try_module_get(type->typ_dt_ops->o_owner);
spin_unlock(&type->obd_type_lock);
+ /* class_search_type() returned a counted reference,
+ * but we don't need that count any more as
+ * we have one through typ_refcnt.
+ */
+ kobject_put(&type->typ_kobj);
}
return type;
}
static void class_sysfs_release(struct kobject *kobj)
{
- OBD_FREE(kobj, sizeof(*kobj));
+ struct obd_type *type = container_of(kobj, struct obd_type, typ_kobj);
+
+ debugfs_remove_recursive(type->typ_debugfs_entry);
+ type->typ_debugfs_entry = NULL;
+
+ if (type->typ_lu)
+ lu_device_type_fini(type->typ_lu);
+
+#ifdef CONFIG_PROC_FS
+ if (type->typ_name && type->typ_procroot)
+ remove_proc_subtree(type->typ_name, proc_lustre_root);
+#endif
+ if (type->typ_md_ops)
+ OBD_FREE_PTR(type->typ_md_ops);
+ if (type->typ_dt_ops)
+ OBD_FREE_PTR(type->typ_dt_ops);
+
+ OBD_FREE(type, sizeof(*type));
}
static struct kobj_type class_ktype = {
.release = class_sysfs_release,
};
-struct kobject *class_setup_tunables(const char *name)
+#ifdef HAVE_SERVER_SUPPORT
+struct obd_type *class_add_symlinks(const char *name, bool enable_proc)
{
- struct kobject *kobj;
+ struct dentry *symlink;
+ struct obd_type *type;
int rc;
-#ifdef HAVE_SERVER_SUPPORT
- kobj = kset_find_obj(lustre_kset, name);
- if (kobj)
- return kobj;
-#endif
- OBD_ALLOC(kobj, sizeof(*kobj));
- if (!kobj)
+ type = class_search_type(name);
+ if (type) {
+ kobject_put(&type->typ_kobj);
+ return ERR_PTR(-EEXIST);
+ }
+
+ OBD_ALLOC(type, sizeof(*type));
+ if (!type)
return ERR_PTR(-ENOMEM);
- kobj->kset = lustre_kset;
- kobject_init(kobj, &class_ktype);
- rc = kobject_add(kobj, &lustre_kset->kobj, "%s", name);
- if (rc) {
- kobject_put(kobj);
+ type->typ_kobj.kset = lustre_kset;
+ rc = kobject_init_and_add(&type->typ_kobj, &class_ktype,
+ &lustre_kset->kobj, "%s", name);
+ if (rc)
+ return ERR_PTR(rc);
+
+ symlink = debugfs_create_dir(name, debugfs_lustre_root);
+ if (IS_ERR_OR_NULL(symlink)) {
+ rc = symlink ? PTR_ERR(symlink) : -ENOMEM;
+ kobject_put(&type->typ_kobj);
return ERR_PTR(rc);
}
- return kobj;
+ type->typ_debugfs_entry = symlink;
+ type->typ_sym_filter = true;
+
+ if (enable_proc) {
+ type->typ_procroot = lprocfs_register(name, proc_lustre_root,
+ NULL, NULL);
+ if (IS_ERR(type->typ_procroot)) {
+ CERROR("%s: can't create compat proc entry: %d\n",
+ name, (int)PTR_ERR(type->typ_procroot));
+ type->typ_procroot = NULL;
+ }
+ }
+
+ return type;
}
-EXPORT_SYMBOL(class_setup_tunables);
+EXPORT_SYMBOL(class_add_symlinks);
+#endif /* HAVE_SERVER_SUPPORT */
#define CLASS_MAX_NAME 1024
const char *name, struct lu_device_type *ldt)
{
struct obd_type *type;
-#ifdef HAVE_SERVER_SUPPORT
- struct qstr dname;
-#endif /* HAVE_SERVER_SUPPORT */
- int rc = 0;
+ int rc;
ENTRY;
/* sanity check */
LASSERT(strnlen(name, CLASS_MAX_NAME) < CLASS_MAX_NAME);
- if (class_search_type(name)) {
+ type = class_search_type(name);
+ if (type) {
+#ifdef HAVE_SERVER_SUPPORT
+ if (type->typ_sym_filter)
+ goto dir_exist;
+#endif /* HAVE_SERVER_SUPPORT */
+ kobject_put(&type->typ_kobj);
CDEBUG(D_IOCTL, "Type %s already registered\n", name);
RETURN(-EEXIST);
}
- rc = -ENOMEM;
OBD_ALLOC(type, sizeof(*type));
if (type == NULL)
- RETURN(rc);
+ RETURN(-ENOMEM);
+ type->typ_kobj.kset = lustre_kset;
+ kobject_init(&type->typ_kobj, &class_ktype);
+#ifdef HAVE_SERVER_SUPPORT
+dir_exist:
+#endif /* HAVE_SERVER_SUPPORT */
OBD_ALLOC_PTR(type->typ_dt_ops);
OBD_ALLOC_PTR(type->typ_md_ops);
- OBD_ALLOC(type->typ_name, strlen(name) + 1);
if (type->typ_dt_ops == NULL ||
- type->typ_md_ops == NULL ||
- type->typ_name == NULL)
- GOTO (failed, rc);
+ type->typ_md_ops == NULL)
+ GOTO (failed, rc = -ENOMEM);
*(type->typ_dt_ops) = *dt_ops;
/* md_ops is optional */
if (md_ops)
*(type->typ_md_ops) = *md_ops;
- strcpy(type->typ_name, name);
spin_lock_init(&type->obd_type_lock);
+#ifdef HAVE_SERVER_SUPPORT
+ if (type->typ_sym_filter) {
+ type->typ_sym_filter = false;
+ kobject_put(&type->typ_kobj);
+ goto setup_ldt;
+ }
+#endif
#ifdef CONFIG_PROC_FS
- if (enable_proc) {
- type->typ_procroot = lprocfs_register(type->typ_name,
+ if (enable_proc && !type->typ_procroot) {
+ type->typ_procroot = lprocfs_register(name,
proc_lustre_root,
NULL, type);
if (IS_ERR(type->typ_procroot)) {
}
}
#endif
-#ifdef HAVE_SERVER_SUPPORT
- dname.name = name;
- dname.len = strlen(dname.name);
- dname.hash = ll_full_name_hash(debugfs_lustre_root, dname.name,
- dname.len);
- type->typ_debugfs_entry = d_lookup(debugfs_lustre_root, &dname);
- if (type->typ_debugfs_entry) {
- dput(type->typ_debugfs_entry);
- type->typ_sym_filter = true;
- goto dir_exist;
- }
-#endif /* HAVE_SERVER_SUPPORT */
-
- type->typ_debugfs_entry = ldebugfs_register(type->typ_name,
- debugfs_lustre_root,
+ type->typ_debugfs_entry = ldebugfs_register(name, debugfs_lustre_root,
vars, type);
if (IS_ERR_OR_NULL(type->typ_debugfs_entry)) {
rc = type->typ_debugfs_entry ? PTR_ERR(type->typ_debugfs_entry)
type->typ_debugfs_entry = NULL;
GOTO(failed, rc);
}
+
+ rc = kobject_add(&type->typ_kobj, &lustre_kset->kobj, "%s", name);
+ if (rc)
+ GOTO(failed, rc);
#ifdef HAVE_SERVER_SUPPORT
-dir_exist:
+setup_ldt:
#endif
- type->typ_kobj = class_setup_tunables(type->typ_name);
- if (IS_ERR(type->typ_kobj))
- GOTO(failed, rc = PTR_ERR(type->typ_kobj));
-
if (ldt) {
type->typ_lu = ldt;
rc = lu_device_type_init(ldt);
- if (rc) {
- kobject_put(type->typ_kobj);
+ if (rc)
GOTO(failed, rc);
- }
}
- spin_lock(&obd_types_lock);
- list_add(&type->typ_chain, &obd_types);
- spin_unlock(&obd_types_lock);
-
RETURN(0);
failed:
-#ifdef HAVE_SERVER_SUPPORT
- if (type->typ_sym_filter)
- type->typ_debugfs_entry = NULL;
-#endif
- if (!IS_ERR_OR_NULL(type->typ_debugfs_entry))
- ldebugfs_remove(&type->typ_debugfs_entry);
- if (type->typ_name != NULL) {
-#ifdef CONFIG_PROC_FS
- if (type->typ_procroot != NULL)
- remove_proc_subtree(type->typ_name, proc_lustre_root);
-#endif
- OBD_FREE(type->typ_name, strlen(name) + 1);
- }
- if (type->typ_md_ops != NULL)
- OBD_FREE_PTR(type->typ_md_ops);
- if (type->typ_dt_ops != NULL)
- OBD_FREE_PTR(type->typ_dt_ops);
- OBD_FREE(type, sizeof(*type));
- RETURN(rc);
+ kobject_put(&type->typ_kobj);
+
+ RETURN(rc);
}
EXPORT_SYMBOL(class_register_type);
int class_unregister_type(const char *name)
{
struct obd_type *type = class_search_type(name);
+ int rc = 0;
ENTRY;
if (!type) {
/* Remove ops, but leave the name for debugging */
OBD_FREE_PTR(type->typ_dt_ops);
OBD_FREE_PTR(type->typ_md_ops);
- RETURN(-EBUSY);
+ GOTO(out_put, rc = -EBUSY);
}
- kobject_put(type->typ_kobj);
-
- /* we do not use type->typ_procroot as for compatibility purposes
- * other modules can share names (i.e. lod can use lov entry). so
- * we can't reference pointer as it can get invalided when another
- * module removes the entry */
-#ifdef CONFIG_PROC_FS
- if (type->typ_procroot != NULL)
- remove_proc_subtree(type->typ_name, proc_lustre_root);
- if (type->typ_procsym != NULL)
- lprocfs_remove(&type->typ_procsym);
-#endif
-#ifdef HAVE_SERVER_SUPPORT
- if (type->typ_sym_filter)
- type->typ_debugfs_entry = NULL;
-#endif
- if (!IS_ERR_OR_NULL(type->typ_debugfs_entry))
- ldebugfs_remove(&type->typ_debugfs_entry);
-
- if (type->typ_lu)
- lu_device_type_fini(type->typ_lu);
+ /* Put the final ref */
+ kobject_put(&type->typ_kobj);
+out_put:
+ /* Put the ref returned by class_search_type() */
+ kobject_put(&type->typ_kobj);
- spin_lock(&obd_types_lock);
- list_del(&type->typ_chain);
- spin_unlock(&obd_types_lock);
- OBD_FREE(type->typ_name, strlen(name) + 1);
- if (type->typ_dt_ops != NULL)
- OBD_FREE_PTR(type->typ_dt_ops);
- if (type->typ_md_ops != NULL)
- OBD_FREE_PTR(type->typ_md_ops);
- OBD_FREE(type, sizeof(*type));
- RETURN(0);
+ RETURN(rc);
} /* class_unregister_type */
EXPORT_SYMBOL(class_unregister_type);
specified, then only the client with that uuid is returned,
otherwise any client connected to the tgt is returned. */
struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
- const char * typ_name,
+ const char *type_name,
struct obd_uuid *grp_uuid)
{
int i;
if (obd == NULL)
continue;
- if ((strncmp(obd->obd_type->typ_name, typ_name,
- strlen(typ_name)) == 0)) {
+ if ((strncmp(obd->obd_type->typ_name, type_name,
+ strlen(type_name)) == 0)) {
if (obd_uuid_equals(tgt_uuid,
&obd->u.cli.cl_target_uuid) &&
((grp_uuid)? obd_uuid_equals(grp_uuid,
ENTRY;
LASSERT(obd_device_cachep == NULL);
- obd_device_cachep = kmem_cache_create("ll_obd_dev_cache",
- sizeof(struct obd_device),
- 0, 0, NULL);
+ obd_device_cachep = kmem_cache_create_usercopy("ll_obd_dev_cache",
+ sizeof(struct obd_device),
+ 0, 0, 0, sizeof(struct obd_device), NULL);
if (!obd_device_cachep)
GOTO(out, rc = -ENOMEM);
RETURN(rc);
}
+static struct portals_handle_ops export_handle_ops;
+
/* map connection to client */
struct obd_export *class_conn2export(struct lustre_handle *conn)
{
}
CDEBUG(D_INFO, "looking for export cookie %#llx\n", conn->cookie);
- export = class_handle2object(conn->cookie, NULL);
+ export = class_handle2object(conn->cookie, &export_handle_ops);
RETURN(export);
}
EXPORT_SYMBOL(class_conn2export);
imp->imp_last_success_conn = 0;
imp->imp_state = LUSTRE_IMP_NEW;
imp->imp_obd = class_incref(obd, "import", imp);
- mutex_init(&imp->imp_sec_mutex);
+ rwlock_init(&imp->imp_sec_lock);
init_waitqueue_head(&imp->imp_recovery_waitq);
INIT_WORK(&imp->imp_zombie_work, obd_zombie_imp_cull);
__u32 old;
int diff;
int i;
- char *typ_name;
+ const char *type_name;
int rc;
if (max > OBD_MAX_RIF_MAX || max < 1)
return -ERANGE;
- typ_name = cli->cl_import->imp_obd->obd_type->typ_name;
- if (strcmp(typ_name, LUSTRE_MDC_NAME) == 0) {
+ type_name = cli->cl_import->imp_obd->obd_type->typ_name;
+ if (strcmp(type_name, LUSTRE_MDC_NAME) == 0) {
/* adjust max_mod_rpcs_in_flight to ensure it is always
* strictly lower that max_rpcs_in_flight */
if (max < 2) {
LASSERT(!test_and_set_bit(i, cli->cl_mod_tag_bitmap));
spin_unlock(&cli->cl_mod_rpcs_lock);
/* tag 0 is reserved for non-modify RPCs */
+
+ CDEBUG(D_RPCTRACE, "%s: modify RPC slot %u is allocated"
+ "opc %u, max %hu\n",
+ cli->cl_import->imp_obd->obd_name,
+ i + 1, opc, max);
+
return i + 1;
}
spin_unlock(&cli->cl_mod_rpcs_lock);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff