LU-9019 obdclass: migrate jobstats to 64 bit time

[fs/lustre-release.git] / lustre / obdclass / lprocfs_status_server.c

diff --git a/lustre/obdclass/lprocfs_status_server.c b/lustre/obdclass/lprocfs_status_server.c
index b73fdde..e32c8e8 100644 (file)
--- a/lustre/obdclass/lprocfs_status_server.c
+++ b/lustre/obdclass/lprocfs_status_server.c
@@ -34,12 +34,84 @@
 
 #define DEBUG_SUBSYSTEM S_CLASS
 
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
 
 #include <obd_class.h>
 #include <lprocfs_status.h>
 #include <lustre/lustre_idl.h>
 #include <lustre_nodemap.h>
 
+static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
+                        char *buf)
+{
+       struct obd_device *obd = class_name2obd(kobj->name);
+
+       return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
+}
+LUSTRE_RO_ATTR(uuid);
+
+static struct attribute *server_uuid_attrs[] = {
+       &lustre_attr_uuid.attr,
+       NULL,
+};
+
+static struct attribute_group server_def_attr_group = {
+       .attrs = server_uuid_attrs,
+};
+
+void lprocfs_kset_unregister(struct obd_device *obd, struct kset *kset)
+{
+       if (obd->obd_proc_entry) {
+               lprocfs_remove(&obd->obd_proc_entry);
+               obd->obd_proc_entry = NULL;
+       }
+
+       if (kset)
+               kset_unregister(kset);
+}
+EXPORT_SYMBOL(lprocfs_kset_unregister);
+
+int lprocfs_kset_register(struct obd_device *obd, struct kset **kset)
+{
+       struct kset *obd_kset;
+       int rc = 0;
+
+       obd_kset = kset_create_and_add(obd->obd_name, NULL,
+                                      obd->obd_type->typ_kobj);
+       if (!obd_kset) {
+               CERROR("%s: cannot add new kset: rc = %d\n", obd->obd_name, rc);
+               rc = -ENOMEM;
+       }
+
+       if (!obd->obd_attrs)
+               obd->obd_attrs = &server_def_attr_group;
+
+       rc = sysfs_create_group(&obd_kset->kobj, obd->obd_attrs);
+       if (rc) {
+               CERROR("%s: cannot create attr group: rc = %d\n", obd->obd_name,
+                      rc);
+               kset_unregister(obd_kset);
+               obd_kset = NULL;
+               return rc;
+       }
+
+       obd->obd_proc_entry = lprocfs_register(obd->obd_name,
+                                              obd->obd_type->typ_procroot,
+                                              obd->obd_vars, obd);
+       if (IS_ERR(obd->obd_proc_entry)) {
+               rc = PTR_ERR(obd->obd_proc_entry);
+               CERROR("%s: error %d setting up lprocfs\n", obd->obd_name, rc);
+               obd->obd_proc_entry = NULL;
+
+               kset_unregister(obd_kset);
+               obd_kset = NULL;
+       }
+       *kset = obd_kset;
+       return rc;
+}
+EXPORT_SYMBOL(lprocfs_kset_register);
+
 #ifdef CONFIG_PROC_FS
 
 int lprocfs_evict_client_open(struct inode *inode, struct file *f)