lustre/obdclass/class_obd.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #define DEBUG_SUBSYSTEM S_CLASS
  38 #ifndef EXPORT_SYMTAB
  39 # define EXPORT_SYMTAB
  40 #endif
  41 #ifndef __KERNEL__
  42 # include <liblustre.h>
  43 #else
  44 # include <asm/atomic.h>
  45 #endif
  46
  47 #include <obd_support.h>
  48 #include <obd_class.h>
  49 #include <lustre_debug.h>
  50 #include <lprocfs_status.h>
  51 #include <lustre/lustre_build_version.h>
  52 #include <libcfs/list.h>
  53 #include "llog_internal.h"
  54
  55 #ifndef __KERNEL__
  56 /* liblustre workaround */
  57 atomic_t libcfs_kmemory = {0};
  58 #endif
  59
  60 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  61 struct list_head obd_types;
  62 spinlock_t obd_dev_lock = SPIN_LOCK_UNLOCKED;
  63
  64 #ifndef __KERNEL__
  65 __u64 obd_max_pages = 0;
  66 __u64 obd_max_alloc = 0;
  67 __u64 obd_alloc;
  68 __u64 obd_pages;
  69 #endif
  70
  71 /* The following are visible and mutable through /proc/sys/lustre/. */
  72 unsigned int obd_debug_peer_on_timeout;
  73 unsigned int obd_dump_on_timeout;
  74 unsigned int obd_dump_on_eviction;
  75 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  76 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  77 unsigned int obd_max_dirty_pages = 256;
  78 atomic_t obd_dirty_pages;
  79
  80 cfs_waitq_t obd_race_waitq;
  81 int obd_race_state;
  82
  83 #ifdef __KERNEL__
  84 unsigned long obd_print_fail_loc(void)
  85 {
  86         CWARN("obd_fail_loc = %lx\n", obd_fail_loc);
  87         return obd_fail_loc;
  88 }
  89
  90 /*  opening /dev/obd */
  91 static int obd_class_open(unsigned long flags, void *args)
  92 {
  93         ENTRY;
  94
  95         PORTAL_MODULE_USE;
  96         RETURN(0);
  97 }
  98
  99 /*  closing /dev/obd */
 100 static int obd_class_release(unsigned long flags, void *args)
 101 {
 102         ENTRY;
 103
 104         PORTAL_MODULE_UNUSE;
 105         RETURN(0);
 106 }
 107 #endif
 108
 109 static inline void obd_data2conn(struct lustre_handle *conn,
 110                                  struct obd_ioctl_data *data)
 111 {
 112         memset(conn, 0, sizeof *conn);
 113         conn->cookie = data->ioc_cookie;
 114 }
 115
 116 static inline void obd_conn2data(struct obd_ioctl_data *data,
 117                                  struct lustre_handle *conn)
 118 {
 119         data->ioc_cookie = conn->cookie;
 120 }
 121
 122 int class_resolve_dev_name(__u32 len, const char *name)
 123 {
 124         int rc;
 125         int dev;
 126
 127         ENTRY;
 128         if (!len || !name) {
 129                 CERROR("No name passed,!\n");
 130                 GOTO(out, rc = -EINVAL);
 131         }
 132         if (name[len - 1] != 0) {
 133                 CERROR("Name not nul terminated!\n");
 134                 GOTO(out, rc = -EINVAL);
 135         }
 136
 137         CDEBUG(D_IOCTL, "device name %s\n", name);
 138         dev = class_name2dev(name);
 139         if (dev == -1) {
 140                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 141                 GOTO(out, rc = -EINVAL);
 142         }
 143
 144         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 145         rc = dev;
 146
 147 out:
 148         RETURN(rc);
 149 }
 150
 151 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 152 {
 153         char *buf = NULL;
 154         struct obd_ioctl_data *data;
 155         struct libcfs_debug_ioctl_data *debug_data;
 156         struct obd_device *obd = NULL;
 157         int err = 0, len = 0;
 158         ENTRY;
 159
 160         /* only for debugging */
 161         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 162                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 163                 libcfs_subsystem_debug = debug_data->subs;
 164                 libcfs_debug = debug_data->debug;
 165                 return 0;
 166         }
 167
 168         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 169         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 170                 CERROR("OBD ioctl: data error\n");
 171                 GOTO(out, err = -EINVAL);
 172         }
 173         data = (struct obd_ioctl_data *)buf;
 174
 175         switch (cmd) {
 176         case OBD_IOC_PROCESS_CFG: {
 177                 struct lustre_cfg *lcfg;
 178
 179                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 180                         CERROR("No config buffer passed!\n");
 181                         GOTO(out, err = -EINVAL);
 182                 }
 183                 OBD_ALLOC(lcfg, data->ioc_plen1);
 184                 if (lcfg == NULL)
 185                         GOTO(out, err = -ENOMEM);
 186                 err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
 187                 if (!err)
 188                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 189                 if (!err)
 190                         err = class_process_config(lcfg);
 191
 192                 OBD_FREE(lcfg, data->ioc_plen1);
 193                 GOTO(out, err);
 194         }
 195
 196         case OBD_GET_VERSION:
 197                 if (!data->ioc_inlbuf1) {
 198                         CERROR("No buffer passed in ioctl\n");
 199                         GOTO(out, err = -EINVAL);
 200                 }
 201
 202                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 203                         CERROR("ioctl buffer too small to hold version\n");
 204                         GOTO(out, err = -EINVAL);
 205                 }
 206
 207                 memcpy(data->ioc_bulk, BUILD_VERSION,
 208                        strlen(BUILD_VERSION) + 1);
 209
 210                 err = obd_ioctl_popdata((void *)arg, data, len);
 211                 if (err)
 212                         err = -EFAULT;
 213                 GOTO(out, err);
 214
 215         case OBD_IOC_NAME2DEV: {
 216                 /* Resolve a device name.  This does not change the
 217                  * currently selected device.
 218                  */
 219                 int dev;
 220
 221                 dev = class_resolve_dev_name(data->ioc_inllen1,
 222                                              data->ioc_inlbuf1);
 223                 data->ioc_dev = dev;
 224                 if (dev < 0)
 225                         GOTO(out, err = -EINVAL);
 226
 227                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 228                 if (err)
 229                         err = -EFAULT;
 230                 GOTO(out, err);
 231         }
 232
 233         case OBD_IOC_UUID2DEV: {
 234                 /* Resolve a device uuid.  This does not change the
 235                  * currently selected device.
 236                  */
 237                 int dev;
 238                 struct obd_uuid uuid;
 239
 240                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 241                         CERROR("No UUID passed!\n");
 242                         GOTO(out, err = -EINVAL);
 243                 }
 244                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 245                         CERROR("UUID not NUL terminated!\n");
 246                         GOTO(out, err = -EINVAL);
 247                 }
 248
 249                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 250                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 251                 dev = class_uuid2dev(&uuid);
 252                 data->ioc_dev = dev;
 253                 if (dev == -1) {
 254                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 255                                data->ioc_inlbuf1);
 256                         GOTO(out, err = -EINVAL);
 257                 }
 258
 259                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 260                        dev);
 261                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 262                 if (err)
 263                         err = -EFAULT;
 264                 GOTO(out, err);
 265         }
 266
 267         case OBD_IOC_CLOSE_UUID: {
 268                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 269                        data->ioc_inlbuf1);
 270                 GOTO(out, err = 0);
 271         }
 272
 273         case OBD_IOC_GETDEVICE: {
 274                 int     index = data->ioc_count;
 275                 char    *status, *str;
 276
 277                 if (!data->ioc_inlbuf1) {
 278                         CERROR("No buffer passed in ioctl\n");
 279                         GOTO(out, err = -EINVAL);
 280                 }
 281                 if (data->ioc_inllen1 < 128) {
 282                         CERROR("ioctl buffer too small to hold version\n");
 283                         GOTO(out, err = -EINVAL);
 284                 }
 285
 286                 obd = class_num2obd(index);
 287                 if (!obd)
 288                         GOTO(out, err = -ENOENT);
 289
 290                 if (obd->obd_stopping)
 291                         status = "ST";
 292                 else if (obd->obd_set_up)
 293                         status = "UP";
 294                 else if (obd->obd_attached)
 295                         status = "AT";
 296                 else
 297                         status = "--";
 298                 str = (char *)data->ioc_bulk;
 299                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 300                          (int)index, status, obd->obd_type->typ_name,
 301                          obd->obd_name, obd->obd_uuid.uuid,
 302                          atomic_read(&obd->obd_refcount));
 303                 err = obd_ioctl_popdata((void *)arg, data, len);
 304
 305                 GOTO(out, err = 0);
 306         }
 307
 308         }
 309
 310         if (data->ioc_dev >= class_devno_max()) {
 311                 CERROR("OBD ioctl: No device\n");
 312                 GOTO(out, err = -EINVAL);
 313         }
 314
 315         obd = class_num2obd(data->ioc_dev);
 316         if (obd == NULL) {
 317                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 318                 GOTO(out, err = -EINVAL);
 319         }
 320         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 321
 322         if (!obd->obd_set_up || obd->obd_stopping) {
 323                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 324                 GOTO(out, err = -EINVAL);
 325         }
 326
 327         switch(cmd) {
 328         case OBD_IOC_NO_TRANSNO: {
 329                 if (!obd->obd_attached) {
 330                         CERROR("Device %d not attached\n", obd->obd_minor);
 331                         GOTO(out, err = -ENODEV);
 332                 }
 333                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 334                        obd->obd_name);
 335                 obd->obd_no_transno = 1;
 336                 GOTO(out, err = 0);
 337         }
 338
 339         default: {
 340                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 341                 if (err)
 342                         GOTO(out, err);
 343
 344                 err = obd_ioctl_popdata((void *)arg, data, len);
 345                 if (err)
 346                         err = -EFAULT;
 347                 GOTO(out, err);
 348         }
 349         }
 350
 351  out:
 352         if (buf)
 353                 obd_ioctl_freedata(buf, len);
 354         RETURN(err);
 355 } /* class_handle_ioctl */
 356
 357
 358
 359 #define OBD_MINOR 241
 360 #ifdef __KERNEL__
 361 /* to control /dev/obd */
 362 static int obd_class_ioctl (struct cfs_psdev_file *pfile, unsigned long cmd,
 363                             void *arg)
 364 {
 365         return class_handle_ioctl(cmd, (unsigned long)arg);
 366 }
 367
 368 /* declare character device */
 369 struct cfs_psdev_ops obd_psdev_ops = {
 370         /* .p_open    = */ obd_class_open,      /* open */
 371         /* .p_close   = */ obd_class_release,   /* release */
 372         /* .p_read    = */ NULL,
 373         /* .p_write   = */ NULL,
 374         /* .p_ioctl   = */ obd_class_ioctl     /* ioctl */
 375 };
 376
 377 extern cfs_psdev_t obd_psdev;
 378 #else
 379 void *obd_psdev = NULL;
 380 #endif
 381
 382 EXPORT_SYMBOL(obd_devs);
 383 EXPORT_SYMBOL(obd_print_fail_loc);
 384 EXPORT_SYMBOL(obd_race_waitq);
 385 EXPORT_SYMBOL(obd_race_state);
 386 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
 387 EXPORT_SYMBOL(obd_dump_on_timeout);
 388 EXPORT_SYMBOL(obd_dump_on_eviction);
 389 EXPORT_SYMBOL(obd_timeout);
 390 EXPORT_SYMBOL(ldlm_timeout);
 391 EXPORT_SYMBOL(obd_max_dirty_pages);
 392 EXPORT_SYMBOL(obd_dirty_pages);
 393 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 394
 395 EXPORT_SYMBOL(proc_lustre_root);
 396
 397 EXPORT_SYMBOL(class_register_type);
 398 EXPORT_SYMBOL(class_unregister_type);
 399 EXPORT_SYMBOL(class_get_type);
 400 EXPORT_SYMBOL(class_put_type);
 401 EXPORT_SYMBOL(class_name2dev);
 402 EXPORT_SYMBOL(class_name2obd);
 403 EXPORT_SYMBOL(class_uuid2dev);
 404 EXPORT_SYMBOL(class_uuid2obd);
 405 EXPORT_SYMBOL(class_find_client_obd);
 406 EXPORT_SYMBOL(class_find_client_notype);
 407 EXPORT_SYMBOL(class_devices_in_group);
 408 EXPORT_SYMBOL(class_conn2export);
 409 EXPORT_SYMBOL(class_exp2obd);
 410 EXPORT_SYMBOL(class_conn2obd);
 411 EXPORT_SYMBOL(class_exp2cliimp);
 412 EXPORT_SYMBOL(class_conn2cliimp);
 413 EXPORT_SYMBOL(class_disconnect);
 414 EXPORT_SYMBOL(class_num2obd);
 415
 416 /* uuid.c */
 417 EXPORT_SYMBOL(class_uuid_unparse);
 418 EXPORT_SYMBOL(lustre_uuid_to_peer);
 419
 420 EXPORT_SYMBOL(class_handle_hash);
 421 EXPORT_SYMBOL(class_handle_unhash);
 422 EXPORT_SYMBOL(class_handle_hash_back);
 423 EXPORT_SYMBOL(class_handle2object);
 424 EXPORT_SYMBOL(class_handle_free_cb);
 425
 426 /* obd_config.c */
 427 EXPORT_SYMBOL(class_incref);
 428 EXPORT_SYMBOL(class_decref);
 429 EXPORT_SYMBOL(class_get_profile);
 430 EXPORT_SYMBOL(class_del_profile);
 431 EXPORT_SYMBOL(class_del_profiles);
 432 EXPORT_SYMBOL(class_process_config);
 433 EXPORT_SYMBOL(class_process_proc_param);
 434 EXPORT_SYMBOL(class_config_parse_llog);
 435 EXPORT_SYMBOL(class_config_dump_llog);
 436 EXPORT_SYMBOL(class_attach);
 437 EXPORT_SYMBOL(class_setup);
 438 EXPORT_SYMBOL(class_cleanup);
 439 EXPORT_SYMBOL(class_detach);
 440 EXPORT_SYMBOL(class_manual_cleanup);
 441
 442 /* mea.c */
 443 EXPORT_SYMBOL(mea_name2idx);
 444 EXPORT_SYMBOL(raw_name2idx);
 445
 446 #define OBD_INIT_CHECK
 447 #ifdef OBD_INIT_CHECK
 448 int obd_init_checks(void)
 449 {
 450         __u64 u64val, div64val;
 451         char buf[64];
 452         int len, ret = 0;
 453
 454         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s, LPSZ=%s, LPSSZ=%s\n",
 455                LPU64, LPD64, LPX64, LPSZ, LPSSZ);
 456
 457         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 458
 459         u64val = OBD_OBJECT_EOF;
 460         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 461         if (u64val != OBD_OBJECT_EOF) {
 462                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 463                        u64val, (int)sizeof(u64val));
 464                 ret = -EINVAL;
 465         }
 466         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 467         if (len != 18) {
 468                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 469                 ret = -EINVAL;
 470         }
 471
 472         div64val = OBD_OBJECT_EOF;
 473         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 474         if (u64val != OBD_OBJECT_EOF) {
 475                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 476                        u64val, (int)sizeof(u64val));
 477                 ret = -EOVERFLOW;
 478         }
 479         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 480                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 481                        u64val, (int)sizeof(u64val));
 482                 return -EOVERFLOW;
 483         }
 484         if (do_div(div64val, 256) != (u64val & 255)) {
 485                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 486                 return -EOVERFLOW;
 487         }
 488         if (u64val >> 8 != div64val) {
 489                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 490                        u64val, div64val, u64val >> 8);
 491                 return -EOVERFLOW;
 492         }
 493         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 494         if (len != 18) {
 495                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 496                 ret = -EINVAL;
 497         }
 498         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 499         if (len != 20) {
 500                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 501                 ret = -EINVAL;
 502         }
 503         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 504         if (len != 2) {
 505                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 506                 ret = -EINVAL;
 507         }
 508         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 509                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 510                       (__u64)CFS_PAGE_SIZE);
 511                 ret = -EINVAL;
 512         }
 513
 514         return ret;
 515 }
 516 #else
 517 #define obd_init_checks() do {} while(0)
 518 #endif
 519
 520 extern spinlock_t obd_types_lock;
 521 extern int class_procfs_init(void);
 522 extern int class_procfs_clean(void);
 523
 524 #ifdef __KERNEL__
 525 static int __init init_obdclass(void)
 526 #else
 527 int init_obdclass(void)
 528 #endif
 529 {
 530         int i, err;
 531 #ifdef __KERNEL__
 532         int lustre_register_fs(void);
 533
 534         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 535                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 536 #endif
 537
 538         LCONSOLE_INFO("OBD class driver, http://www.lustre.org/\n");
 539         LCONSOLE_INFO("        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 540         LCONSOLE_INFO("        Build Version: "BUILD_VERSION"\n");
 541
 542         spin_lock_init(&obd_types_lock);
 543         cfs_waitq_init(&obd_race_waitq);
 544         obd_zombie_impexp_init();
 545 #ifdef LPROCFS
 546         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 547                                          LPROCFS_STATS_FLAG_PERCPU);
 548         if (obd_memory == NULL) {
 549                 CERROR("kmalloc of 'obd_memory' failed\n");
 550                 RETURN(-ENOMEM);
 551         }
 552
 553         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 554                              LPROCFS_CNTR_AVGMINMAX,
 555                              "memused", "bytes");
 556         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 557                              LPROCFS_CNTR_AVGMINMAX,
 558                              "pagesused", "pages");
 559 #endif
 560         err = obd_init_checks();
 561         if (err == -EOVERFLOW)
 562                 return err;
 563
 564         class_init_uuidlist();
 565         err = class_handle_init();
 566         if (err)
 567                 return err;
 568
 569         spin_lock_init(&obd_dev_lock);
 570         CFS_INIT_LIST_HEAD(&obd_types);
 571
 572         err = cfs_psdev_register(&obd_psdev);
 573         if (err) {
 574                 CERROR("cannot register %d err %d\n", OBD_MINOR, err);
 575                 return err;
 576         }
 577
 578         /* This struct is already zeroed for us (static global) */
 579         for (i = 0; i < class_devno_max(); i++)
 580                 obd_devs[i] = NULL;
 581
 582         /* Default the dirty page cache cap to 1/2 of system memory.
 583          * For clients with less memory, a larger fraction is needed
 584          * for other purposes (mostly for BGL). */
 585         if (num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
 586                 obd_max_dirty_pages = num_physpages / 4;
 587         else
 588                 obd_max_dirty_pages = num_physpages / 2;
 589
 590         err = obd_init_caches();
 591         if (err)
 592                 return err;
 593 #ifdef __KERNEL__
 594         err = lu_global_init();
 595         if (err)
 596                 return err;
 597         err = class_procfs_init();
 598         if (err)
 599                 return err;
 600         err = lustre_register_fs();
 601 #endif
 602
 603         return err;
 604 }
 605
 606 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 607  * ifdef to the end of the file to cover module and versioning goo.*/
 608 #ifdef __KERNEL__
 609 static void cleanup_obdclass(void)
 610 {
 611         int i;
 612         int lustre_unregister_fs(void);
 613         __u64 memory_leaked, pages_leaked;
 614         __u64 memory_max, pages_max;
 615         ENTRY;
 616
 617         lustre_unregister_fs();
 618
 619         cfs_psdev_deregister(&obd_psdev);
 620         for (i = 0; i < class_devno_max(); i++) {
 621                 struct obd_device *obd = class_num2obd(i);
 622                 if (obd && obd->obd_set_up &&
 623                     OBT(obd) && OBP(obd, detach)) {
 624                         /* XXX should this call generic detach otherwise? */
 625                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 626                         OBP(obd, detach)(obd);
 627                 }
 628         }
 629         lu_global_fini();
 630
 631         obd_cleanup_caches();
 632         obd_sysctl_clean();
 633
 634         class_procfs_clean();
 635
 636         class_handle_cleanup();
 637         class_exit_uuidlist();
 638         obd_zombie_impexp_stop();
 639
 640         memory_leaked = obd_memory_sum();
 641         pages_leaked = obd_pages_sum();
 642
 643         memory_max = obd_memory_max();
 644         pages_max = obd_pages_max();
 645
 646         lprocfs_free_stats(&obd_memory);
 647         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 648                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 649                memory_max, memory_leaked);
 650         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 651                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 652                pages_max, pages_leaked);
 653
 654         EXIT;
 655 }
 656
 657 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 658 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 659 MODULE_LICENSE("GPL");
 660
 661 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 662 #endif