lustre/obdclass/class_obd.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, Whamcloud, Inc.
  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 __KERNEL__
  39 # include <liblustre.h>
  40 #else
  41 # include <asm/atomic.h>
  42 #endif
  43
  44 #include <obd_support.h>
  45 #include <obd_class.h>
  46 #include <lnet/lnetctl.h>
  47 #include <lustre_debug.h>
  48 #include <lprocfs_status.h>
  49 #include <lustre/lustre_build_version.h>
  50 #include <libcfs/list.h>
  51 #include "llog_internal.h"
  52
  53 #ifndef __KERNEL__
  54 /* liblustre workaround */
  55 cfs_atomic_t libcfs_kmemory = {0};
  56 #endif
  57
  58 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  59 EXPORT_SYMBOL(obd_devs);
  60 cfs_list_t obd_types;
  61 cfs_rwlock_t obd_dev_lock = CFS_RW_LOCK_UNLOCKED;
  62
  63 #ifndef __KERNEL__
  64 __u64 obd_max_pages = 0;
  65 __u64 obd_max_alloc = 0;
  66 __u64 obd_alloc;
  67 __u64 obd_pages;
  68 #endif
  69
  70 /* The following are visible and mutable through /proc/sys/lustre/. */
  71 unsigned int obd_debug_peer_on_timeout;
  72 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
  73 unsigned int obd_dump_on_timeout;
  74 EXPORT_SYMBOL(obd_dump_on_timeout);
  75 unsigned int obd_dump_on_eviction;
  76 EXPORT_SYMBOL(obd_dump_on_eviction);
  77 unsigned int obd_max_dirty_pages = 256;
  78 EXPORT_SYMBOL(obd_max_dirty_pages);
  79 cfs_atomic_t obd_dirty_pages;
  80 EXPORT_SYMBOL(obd_dirty_pages);
  81 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  82 EXPORT_SYMBOL(obd_timeout);
  83 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  84 EXPORT_SYMBOL(ldlm_timeout);
  85 /* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
  86 unsigned int at_min = 0;
  87 EXPORT_SYMBOL(at_min);
  88 unsigned int at_max = 600;
  89 EXPORT_SYMBOL(at_max);
  90 unsigned int at_history = 600;
  91 EXPORT_SYMBOL(at_history);
  92 int at_early_margin = 5;
  93 EXPORT_SYMBOL(at_early_margin);
  94 int at_extra = 30;
  95 EXPORT_SYMBOL(at_extra);
  96
  97 cfs_atomic_t obd_dirty_transit_pages;
  98 EXPORT_SYMBOL(obd_dirty_transit_pages);
  99
 100 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
 101 EXPORT_SYMBOL(obd_jobid_var);
 102
 103 /* Get jobid of current process by reading the environment variable
 104  * stored in between the "env_start" & "env_end" of task struct.
 105  *
 106  * TODO:
 107  * It's better to cache the jobid for later use if there is any
 108  * efficient way, the cl_env code probably could be reused for this
 109  * purpose.
 110  *
 111  * If some job scheduler doesn't store jobid in the "env_start/end",
 112  * then an upcall could be issued here to get the jobid by utilizing
 113  * the userspace tools/api. Then, the jobid must be cached.
 114  */
 115 int lustre_get_jobid(char *jobid)
 116 {
 117 #ifdef __KERNEL__
 118         int jobid_len = JOBSTATS_JOBID_SIZE;
 119 #endif
 120         int ret = 0;
 121         ENTRY;
 122
 123         memset(jobid, 0, JOBSTATS_JOBID_SIZE);
 124         /* Jobstats isn't enabled */
 125         if (!memcmp(obd_jobid_var, JOBSTATS_DISABLE,
 126                     strlen(JOBSTATS_DISABLE))) {
 127                 RETURN(0);
 128         }
 129
 130         /* Use process name + fsuid as jobid */
 131         if (!memcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID,
 132                     strlen(JOBSTATS_PROCNAME_UID))) {
 133                 snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s_%u",
 134                          cfs_curproc_comm(), cfs_curproc_fsuid());
 135                 RETURN(0);
 136         }
 137
 138 #ifdef __KERNEL__
 139         ret = cfs_get_environ(obd_jobid_var, jobid, &jobid_len);
 140         if (ret) {
 141                 CDEBUG((ret != -ENOENT && ret != -EINVAL) ? D_ERROR : D_INFO,
 142                        "Get jobid for (%s) failed(%d).\n", obd_jobid_var, ret);
 143         }
 144 #endif
 145         RETURN(ret);
 146 }
 147 EXPORT_SYMBOL(lustre_get_jobid);
 148
 149 static inline void obd_data2conn(struct lustre_handle *conn,
 150                                  struct obd_ioctl_data *data)
 151 {
 152         memset(conn, 0, sizeof *conn);
 153         conn->cookie = data->ioc_cookie;
 154 }
 155
 156 static inline void obd_conn2data(struct obd_ioctl_data *data,
 157                                  struct lustre_handle *conn)
 158 {
 159         data->ioc_cookie = conn->cookie;
 160 }
 161
 162 int class_resolve_dev_name(__u32 len, const char *name)
 163 {
 164         int rc;
 165         int dev;
 166
 167         ENTRY;
 168         if (!len || !name) {
 169                 CERROR("No name passed,!\n");
 170                 GOTO(out, rc = -EINVAL);
 171         }
 172         if (name[len - 1] != 0) {
 173                 CERROR("Name not nul terminated!\n");
 174                 GOTO(out, rc = -EINVAL);
 175         }
 176
 177         CDEBUG(D_IOCTL, "device name %s\n", name);
 178         dev = class_name2dev(name);
 179         if (dev == -1) {
 180                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 181                 GOTO(out, rc = -EINVAL);
 182         }
 183
 184         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 185         rc = dev;
 186
 187 out:
 188         RETURN(rc);
 189 }
 190
 191 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 192 {
 193         char *buf = NULL;
 194         struct obd_ioctl_data *data;
 195         struct libcfs_debug_ioctl_data *debug_data;
 196         struct obd_device *obd = NULL;
 197         int err = 0, len = 0;
 198         ENTRY;
 199
 200         /* only for debugging */
 201         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 202                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 203                 libcfs_subsystem_debug = debug_data->subs;
 204                 libcfs_debug = debug_data->debug;
 205                 return 0;
 206         }
 207
 208         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 209         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 210                 CERROR("OBD ioctl: data error\n");
 211                 RETURN(-EINVAL);
 212         }
 213         data = (struct obd_ioctl_data *)buf;
 214
 215         switch (cmd) {
 216         case OBD_IOC_PROCESS_CFG: {
 217                 struct lustre_cfg *lcfg;
 218
 219                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 220                         CERROR("No config buffer passed!\n");
 221                         GOTO(out, err = -EINVAL);
 222                 }
 223                 OBD_ALLOC(lcfg, data->ioc_plen1);
 224                 if (lcfg == NULL)
 225                         GOTO(out, err = -ENOMEM);
 226                 err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
 227                                          data->ioc_plen1);
 228                 if (!err)
 229                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 230                 if (!err)
 231                         err = class_process_config(lcfg);
 232
 233                 OBD_FREE(lcfg, data->ioc_plen1);
 234                 GOTO(out, err);
 235         }
 236
 237         case OBD_GET_VERSION:
 238                 if (!data->ioc_inlbuf1) {
 239                         CERROR("No buffer passed in ioctl\n");
 240                         GOTO(out, err = -EINVAL);
 241                 }
 242
 243                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 244                         CERROR("ioctl buffer too small to hold version\n");
 245                         GOTO(out, err = -EINVAL);
 246                 }
 247
 248                 memcpy(data->ioc_bulk, BUILD_VERSION,
 249                        strlen(BUILD_VERSION) + 1);
 250
 251                 err = obd_ioctl_popdata((void *)arg, data, len);
 252                 if (err)
 253                         err = -EFAULT;
 254                 GOTO(out, err);
 255
 256         case OBD_IOC_NAME2DEV: {
 257                 /* Resolve a device name.  This does not change the
 258                  * currently selected device.
 259                  */
 260                 int dev;
 261
 262                 dev = class_resolve_dev_name(data->ioc_inllen1,
 263                                              data->ioc_inlbuf1);
 264                 data->ioc_dev = dev;
 265                 if (dev < 0)
 266                         GOTO(out, err = -EINVAL);
 267
 268                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 269                 if (err)
 270                         err = -EFAULT;
 271                 GOTO(out, err);
 272         }
 273
 274         case OBD_IOC_UUID2DEV: {
 275                 /* Resolve a device uuid.  This does not change the
 276                  * currently selected device.
 277                  */
 278                 int dev;
 279                 struct obd_uuid uuid;
 280
 281                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 282                         CERROR("No UUID passed!\n");
 283                         GOTO(out, err = -EINVAL);
 284                 }
 285                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 286                         CERROR("UUID not NUL terminated!\n");
 287                         GOTO(out, err = -EINVAL);
 288                 }
 289
 290                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 291                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 292                 dev = class_uuid2dev(&uuid);
 293                 data->ioc_dev = dev;
 294                 if (dev == -1) {
 295                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 296                                data->ioc_inlbuf1);
 297                         GOTO(out, err = -EINVAL);
 298                 }
 299
 300                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 301                        dev);
 302                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 303                 if (err)
 304                         err = -EFAULT;
 305                 GOTO(out, err);
 306         }
 307
 308         case OBD_IOC_CLOSE_UUID: {
 309                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 310                        data->ioc_inlbuf1);
 311                 GOTO(out, err = 0);
 312         }
 313
 314         case OBD_IOC_GETDEVICE: {
 315                 int     index = data->ioc_count;
 316                 char    *status, *str;
 317
 318                 if (!data->ioc_inlbuf1) {
 319                         CERROR("No buffer passed in ioctl\n");
 320                         GOTO(out, err = -EINVAL);
 321                 }
 322                 if (data->ioc_inllen1 < 128) {
 323                         CERROR("ioctl buffer too small to hold version\n");
 324                         GOTO(out, err = -EINVAL);
 325                 }
 326
 327                 obd = class_num2obd(index);
 328                 if (!obd)
 329                         GOTO(out, err = -ENOENT);
 330
 331                 if (obd->obd_stopping)
 332                         status = "ST";
 333                 else if (obd->obd_set_up)
 334                         status = "UP";
 335                 else if (obd->obd_attached)
 336                         status = "AT";
 337                 else
 338                         status = "--";
 339                 str = (char *)data->ioc_bulk;
 340                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 341                          (int)index, status, obd->obd_type->typ_name,
 342                          obd->obd_name, obd->obd_uuid.uuid,
 343                          cfs_atomic_read(&obd->obd_refcount));
 344                 err = obd_ioctl_popdata((void *)arg, data, len);
 345
 346                 GOTO(out, err = 0);
 347         }
 348
 349         }
 350
 351         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 352                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 353                         GOTO(out, err = -EINVAL);
 354                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 355                         GOTO(out, err = -EINVAL);
 356                 obd = class_name2obd(data->ioc_inlbuf4);
 357         } else if (data->ioc_dev < class_devno_max()) {
 358                 obd = class_num2obd(data->ioc_dev);
 359         } else {
 360                 CERROR("OBD ioctl: No device\n");
 361                 GOTO(out, err = -EINVAL);
 362         }
 363
 364         if (obd == NULL) {
 365                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 366                 GOTO(out, err = -EINVAL);
 367         }
 368         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 369
 370         if (!obd->obd_set_up || obd->obd_stopping) {
 371                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 372                 GOTO(out, err = -EINVAL);
 373         }
 374
 375         switch(cmd) {
 376         case OBD_IOC_NO_TRANSNO: {
 377                 if (!obd->obd_attached) {
 378                         CERROR("Device %d not attached\n", obd->obd_minor);
 379                         GOTO(out, err = -ENODEV);
 380                 }
 381                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 382                        obd->obd_name);
 383                 obd->obd_no_transno = 1;
 384                 GOTO(out, err = 0);
 385         }
 386
 387         default: {
 388                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 389                 if (err)
 390                         GOTO(out, err);
 391
 392                 err = obd_ioctl_popdata((void *)arg, data, len);
 393                 if (err)
 394                         err = -EFAULT;
 395                 GOTO(out, err);
 396         }
 397         }
 398
 399  out:
 400         if (buf)
 401                 obd_ioctl_freedata(buf, len);
 402         RETURN(err);
 403 } /* class_handle_ioctl */
 404
 405 #ifdef __KERNEL__
 406 extern cfs_psdev_t obd_psdev;
 407 #else
 408 void *obd_psdev = NULL;
 409 #endif
 410
 411 #define OBD_INIT_CHECK
 412 #ifdef OBD_INIT_CHECK
 413 int obd_init_checks(void)
 414 {
 415         __u64 u64val, div64val;
 416         char buf[64];
 417         int len, ret = 0;
 418
 419         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 420
 421         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 422
 423         u64val = OBD_OBJECT_EOF;
 424         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 425         if (u64val != OBD_OBJECT_EOF) {
 426                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 427                        u64val, (int)sizeof(u64val));
 428                 ret = -EINVAL;
 429         }
 430         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 431         if (len != 18) {
 432                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 433                 ret = -EINVAL;
 434         }
 435
 436         div64val = OBD_OBJECT_EOF;
 437         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 438         if (u64val != OBD_OBJECT_EOF) {
 439                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 440                        u64val, (int)sizeof(u64val));
 441                 ret = -EOVERFLOW;
 442         }
 443         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 444                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 445                        u64val, (int)sizeof(u64val));
 446                 return -EOVERFLOW;
 447         }
 448         if (do_div(div64val, 256) != (u64val & 255)) {
 449                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 450                 return -EOVERFLOW;
 451         }
 452         if (u64val >> 8 != div64val) {
 453                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 454                        u64val, div64val, u64val >> 8);
 455                 return -EOVERFLOW;
 456         }
 457         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 458         if (len != 18) {
 459                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 460                 ret = -EINVAL;
 461         }
 462         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 463         if (len != 20) {
 464                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 465                 ret = -EINVAL;
 466         }
 467         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 468         if (len != 2) {
 469                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 470                 ret = -EINVAL;
 471         }
 472         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 473                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 474                       (__u64)CFS_PAGE_SIZE);
 475                 ret = -EINVAL;
 476         }
 477
 478         return ret;
 479 }
 480 #else
 481 #define obd_init_checks() do {} while(0)
 482 #endif
 483
 484 extern cfs_spinlock_t obd_types_lock;
 485 extern int class_procfs_init(void);
 486 extern int class_procfs_clean(void);
 487
 488 #ifdef __KERNEL__
 489 static int __init init_obdclass(void)
 490 #else
 491 int init_obdclass(void)
 492 #endif
 493 {
 494         int i, err;
 495 #ifdef __KERNEL__
 496         int lustre_register_fs(void);
 497
 498         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 499                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 500 #endif
 501
 502         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 503
 504         cfs_spin_lock_init(&obd_types_lock);
 505         obd_zombie_impexp_init();
 506 #ifdef LPROCFS
 507         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 508                                          LPROCFS_STATS_FLAG_NONE |
 509                                          LPROCFS_STATS_FLAG_IRQ_SAFE);
 510         if (obd_memory == NULL) {
 511                 CERROR("kmalloc of 'obd_memory' failed\n");
 512                 RETURN(-ENOMEM);
 513         }
 514
 515         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 516                              LPROCFS_CNTR_AVGMINMAX,
 517                              "memused", "bytes");
 518         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 519                              LPROCFS_CNTR_AVGMINMAX,
 520                              "pagesused", "pages");
 521 #endif
 522         err = obd_init_checks();
 523         if (err == -EOVERFLOW)
 524                 return err;
 525
 526         class_init_uuidlist();
 527         err = class_handle_init();
 528         if (err)
 529                 return err;
 530
 531         CFS_INIT_LIST_HEAD(&obd_types);
 532
 533         err = cfs_psdev_register(&obd_psdev);
 534         if (err) {
 535                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 536                 return err;
 537         }
 538
 539         /* This struct is already zeroed for us (static global) */
 540         for (i = 0; i < class_devno_max(); i++)
 541                 obd_devs[i] = NULL;
 542
 543         /* Default the dirty page cache cap to 1/2 of system memory.
 544          * For clients with less memory, a larger fraction is needed
 545          * for other purposes (mostly for BGL). */
 546         if (cfs_num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
 547                 obd_max_dirty_pages = cfs_num_physpages / 4;
 548         else
 549                 obd_max_dirty_pages = cfs_num_physpages / 2;
 550
 551         err = obd_init_caches();
 552         if (err)
 553                 return err;
 554 #ifdef __KERNEL__
 555         err = class_procfs_init();
 556         if (err)
 557                 return err;
 558 #endif
 559
 560         err = lu_global_init();
 561         if (err)
 562                 return err;
 563
 564 #ifdef __KERNEL__
 565         err = lustre_register_fs();
 566 #endif
 567
 568         return err;
 569 }
 570
 571 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 572  * ifdef to the end of the file to cover module and versioning goo.*/
 573 #ifdef __KERNEL__
 574 static void cleanup_obdclass(void)
 575 {
 576         int i;
 577         int lustre_unregister_fs(void);
 578         __u64 memory_leaked, pages_leaked;
 579         __u64 memory_max, pages_max;
 580         ENTRY;
 581
 582         lustre_unregister_fs();
 583
 584         cfs_psdev_deregister(&obd_psdev);
 585         for (i = 0; i < class_devno_max(); i++) {
 586                 struct obd_device *obd = class_num2obd(i);
 587                 if (obd && obd->obd_set_up &&
 588                     OBT(obd) && OBP(obd, detach)) {
 589                         /* XXX should this call generic detach otherwise? */
 590                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 591                         OBP(obd, detach)(obd);
 592                 }
 593         }
 594         lu_global_fini();
 595
 596         obd_cleanup_caches();
 597         obd_sysctl_clean();
 598
 599         class_procfs_clean();
 600
 601         class_handle_cleanup();
 602         class_exit_uuidlist();
 603         obd_zombie_impexp_stop();
 604
 605         memory_leaked = obd_memory_sum();
 606         pages_leaked = obd_pages_sum();
 607
 608         memory_max = obd_memory_max();
 609         pages_max = obd_pages_max();
 610
 611         lprocfs_free_stats(&obd_memory);
 612         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 613                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 614                memory_max, memory_leaked);
 615         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 616                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 617                pages_max, pages_leaked);
 618
 619         EXIT;
 620 }
 621
 622 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 623 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 624 MODULE_LICENSE("GPL");
 625
 626 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 627 #endif