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 DEFINE_RWLOCK(obd_dev_lock);
  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 && ret != -EDEADLK) ?
 142                        D_ERROR : D_INFO, "Get jobid for (%s) failed: rc = %d\n",
 143                        obd_jobid_var, ret);
 144         }
 145 #endif
 146         RETURN(ret);
 147 }
 148 EXPORT_SYMBOL(lustre_get_jobid);
 149
 150 static inline void obd_data2conn(struct lustre_handle *conn,
 151                                  struct obd_ioctl_data *data)
 152 {
 153         memset(conn, 0, sizeof *conn);
 154         conn->cookie = data->ioc_cookie;
 155 }
 156
 157 static inline void obd_conn2data(struct obd_ioctl_data *data,
 158                                  struct lustre_handle *conn)
 159 {
 160         data->ioc_cookie = conn->cookie;
 161 }
 162
 163 int class_resolve_dev_name(__u32 len, const char *name)
 164 {
 165         int rc;
 166         int dev;
 167
 168         ENTRY;
 169         if (!len || !name) {
 170                 CERROR("No name passed,!\n");
 171                 GOTO(out, rc = -EINVAL);
 172         }
 173         if (name[len - 1] != 0) {
 174                 CERROR("Name not nul terminated!\n");
 175                 GOTO(out, rc = -EINVAL);
 176         }
 177
 178         CDEBUG(D_IOCTL, "device name %s\n", name);
 179         dev = class_name2dev(name);
 180         if (dev == -1) {
 181                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 182                 GOTO(out, rc = -EINVAL);
 183         }
 184
 185         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 186         rc = dev;
 187
 188 out:
 189         RETURN(rc);
 190 }
 191
 192 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 193 {
 194         char *buf = NULL;
 195         struct obd_ioctl_data *data;
 196         struct libcfs_debug_ioctl_data *debug_data;
 197         struct obd_device *obd = NULL;
 198         int err = 0, len = 0;
 199         ENTRY;
 200
 201         /* only for debugging */
 202         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 203                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 204                 libcfs_subsystem_debug = debug_data->subs;
 205                 libcfs_debug = debug_data->debug;
 206                 return 0;
 207         }
 208
 209         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 210         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 211                 CERROR("OBD ioctl: data error\n");
 212                 RETURN(-EINVAL);
 213         }
 214         data = (struct obd_ioctl_data *)buf;
 215
 216         switch (cmd) {
 217         case OBD_IOC_PROCESS_CFG: {
 218                 struct lustre_cfg *lcfg;
 219
 220                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 221                         CERROR("No config buffer passed!\n");
 222                         GOTO(out, err = -EINVAL);
 223                 }
 224                 OBD_ALLOC(lcfg, data->ioc_plen1);
 225                 if (lcfg == NULL)
 226                         GOTO(out, err = -ENOMEM);
 227                 err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
 228                                          data->ioc_plen1);
 229                 if (!err)
 230                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 231                 if (!err)
 232                         err = class_process_config(lcfg);
 233
 234                 OBD_FREE(lcfg, data->ioc_plen1);
 235                 GOTO(out, err);
 236         }
 237
 238         case OBD_GET_VERSION:
 239                 if (!data->ioc_inlbuf1) {
 240                         CERROR("No buffer passed in ioctl\n");
 241                         GOTO(out, err = -EINVAL);
 242                 }
 243
 244                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 245                         CERROR("ioctl buffer too small to hold version\n");
 246                         GOTO(out, err = -EINVAL);
 247                 }
 248
 249                 memcpy(data->ioc_bulk, BUILD_VERSION,
 250                        strlen(BUILD_VERSION) + 1);
 251
 252                 err = obd_ioctl_popdata((void *)arg, data, len);
 253                 if (err)
 254                         err = -EFAULT;
 255                 GOTO(out, err);
 256
 257         case OBD_IOC_NAME2DEV: {
 258                 /* Resolve a device name.  This does not change the
 259                  * currently selected device.
 260                  */
 261                 int dev;
 262
 263                 dev = class_resolve_dev_name(data->ioc_inllen1,
 264                                              data->ioc_inlbuf1);
 265                 data->ioc_dev = dev;
 266                 if (dev < 0)
 267                         GOTO(out, err = -EINVAL);
 268
 269                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 270                 if (err)
 271                         err = -EFAULT;
 272                 GOTO(out, err);
 273         }
 274
 275         case OBD_IOC_UUID2DEV: {
 276                 /* Resolve a device uuid.  This does not change the
 277                  * currently selected device.
 278                  */
 279                 int dev;
 280                 struct obd_uuid uuid;
 281
 282                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 283                         CERROR("No UUID passed!\n");
 284                         GOTO(out, err = -EINVAL);
 285                 }
 286                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 287                         CERROR("UUID not NUL terminated!\n");
 288                         GOTO(out, err = -EINVAL);
 289                 }
 290
 291                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 292                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 293                 dev = class_uuid2dev(&uuid);
 294                 data->ioc_dev = dev;
 295                 if (dev == -1) {
 296                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 297                                data->ioc_inlbuf1);
 298                         GOTO(out, err = -EINVAL);
 299                 }
 300
 301                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 302                        dev);
 303                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 304                 if (err)
 305                         err = -EFAULT;
 306                 GOTO(out, err);
 307         }
 308
 309         case OBD_IOC_CLOSE_UUID: {
 310                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 311                        data->ioc_inlbuf1);
 312                 GOTO(out, err = 0);
 313         }
 314
 315         case OBD_IOC_GETDEVICE: {
 316                 int     index = data->ioc_count;
 317                 char    *status, *str;
 318
 319                 if (!data->ioc_inlbuf1) {
 320                         CERROR("No buffer passed in ioctl\n");
 321                         GOTO(out, err = -EINVAL);
 322                 }
 323                 if (data->ioc_inllen1 < 128) {
 324                         CERROR("ioctl buffer too small to hold version\n");
 325                         GOTO(out, err = -EINVAL);
 326                 }
 327
 328                 obd = class_num2obd(index);
 329                 if (!obd)
 330                         GOTO(out, err = -ENOENT);
 331
 332                 if (obd->obd_stopping)
 333                         status = "ST";
 334                 else if (obd->obd_set_up)
 335                         status = "UP";
 336                 else if (obd->obd_attached)
 337                         status = "AT";
 338                 else
 339                         status = "--";
 340                 str = (char *)data->ioc_bulk;
 341                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 342                          (int)index, status, obd->obd_type->typ_name,
 343                          obd->obd_name, obd->obd_uuid.uuid,
 344                          cfs_atomic_read(&obd->obd_refcount));
 345                 err = obd_ioctl_popdata((void *)arg, data, len);
 346
 347                 GOTO(out, err = 0);
 348         }
 349
 350         }
 351
 352         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 353                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 354                         GOTO(out, err = -EINVAL);
 355                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 356                         GOTO(out, err = -EINVAL);
 357                 obd = class_name2obd(data->ioc_inlbuf4);
 358         } else if (data->ioc_dev < class_devno_max()) {
 359                 obd = class_num2obd(data->ioc_dev);
 360         } else {
 361                 CERROR("OBD ioctl: No device\n");
 362                 GOTO(out, err = -EINVAL);
 363         }
 364
 365         if (obd == NULL) {
 366                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 367                 GOTO(out, err = -EINVAL);
 368         }
 369         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 370
 371         if (!obd->obd_set_up || obd->obd_stopping) {
 372                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 373                 GOTO(out, err = -EINVAL);
 374         }
 375
 376         switch(cmd) {
 377         case OBD_IOC_NO_TRANSNO: {
 378                 if (!obd->obd_attached) {
 379                         CERROR("Device %d not attached\n", obd->obd_minor);
 380                         GOTO(out, err = -ENODEV);
 381                 }
 382                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 383                        obd->obd_name);
 384                 obd->obd_no_transno = 1;
 385                 GOTO(out, err = 0);
 386         }
 387
 388         default: {
 389                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 390                 if (err)
 391                         GOTO(out, err);
 392
 393                 err = obd_ioctl_popdata((void *)arg, data, len);
 394                 if (err)
 395                         err = -EFAULT;
 396                 GOTO(out, err);
 397         }
 398         }
 399
 400  out:
 401         if (buf)
 402                 obd_ioctl_freedata(buf, len);
 403         RETURN(err);
 404 } /* class_handle_ioctl */
 405
 406 #ifdef __KERNEL__
 407 extern cfs_psdev_t obd_psdev;
 408 #else
 409 void *obd_psdev = NULL;
 410 #endif
 411
 412 #define OBD_INIT_CHECK
 413 #ifdef OBD_INIT_CHECK
 414 int obd_init_checks(void)
 415 {
 416         __u64 u64val, div64val;
 417         char buf[64];
 418         int len, ret = 0;
 419
 420         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 421
 422         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 423
 424         u64val = OBD_OBJECT_EOF;
 425         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 426         if (u64val != OBD_OBJECT_EOF) {
 427                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 428                        u64val, (int)sizeof(u64val));
 429                 ret = -EINVAL;
 430         }
 431         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 432         if (len != 18) {
 433                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 434                 ret = -EINVAL;
 435         }
 436
 437         div64val = OBD_OBJECT_EOF;
 438         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 439         if (u64val != OBD_OBJECT_EOF) {
 440                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 441                        u64val, (int)sizeof(u64val));
 442                 ret = -EOVERFLOW;
 443         }
 444         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 445                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 446                        u64val, (int)sizeof(u64val));
 447                 return -EOVERFLOW;
 448         }
 449         if (do_div(div64val, 256) != (u64val & 255)) {
 450                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 451                 return -EOVERFLOW;
 452         }
 453         if (u64val >> 8 != div64val) {
 454                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 455                        u64val, div64val, u64val >> 8);
 456                 return -EOVERFLOW;
 457         }
 458         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 459         if (len != 18) {
 460                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 461                 ret = -EINVAL;
 462         }
 463         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 464         if (len != 20) {
 465                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 466                 ret = -EINVAL;
 467         }
 468         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 469         if (len != 2) {
 470                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 471                 ret = -EINVAL;
 472         }
 473         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 474                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 475                       (__u64)CFS_PAGE_SIZE);
 476                 ret = -EINVAL;
 477         }
 478
 479         return ret;
 480 }
 481 #else
 482 #define obd_init_checks() do {} while(0)
 483 #endif
 484
 485 extern cfs_spinlock_t obd_types_lock;
 486 extern int class_procfs_init(void);
 487 extern int class_procfs_clean(void);
 488
 489 #ifdef __KERNEL__
 490 static int __init init_obdclass(void)
 491 #else
 492 int init_obdclass(void)
 493 #endif
 494 {
 495         int i, err;
 496 #ifdef __KERNEL__
 497         int lustre_register_fs(void);
 498
 499         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 500                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 501 #endif
 502
 503         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 504
 505         cfs_spin_lock_init(&obd_types_lock);
 506         obd_zombie_impexp_init();
 507 #ifdef LPROCFS
 508         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 509                                          LPROCFS_STATS_FLAG_NONE |
 510                                          LPROCFS_STATS_FLAG_IRQ_SAFE);
 511         if (obd_memory == NULL) {
 512                 CERROR("kmalloc of 'obd_memory' failed\n");
 513                 RETURN(-ENOMEM);
 514         }
 515
 516         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 517                              LPROCFS_CNTR_AVGMINMAX,
 518                              "memused", "bytes");
 519         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 520                              LPROCFS_CNTR_AVGMINMAX,
 521                              "pagesused", "pages");
 522 #endif
 523         err = obd_init_checks();
 524         if (err == -EOVERFLOW)
 525                 return err;
 526
 527         class_init_uuidlist();
 528         err = class_handle_init();
 529         if (err)
 530                 return err;
 531
 532         CFS_INIT_LIST_HEAD(&obd_types);
 533
 534         err = cfs_psdev_register(&obd_psdev);
 535         if (err) {
 536                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 537                 return err;
 538         }
 539
 540         /* This struct is already zeroed for us (static global) */
 541         for (i = 0; i < class_devno_max(); i++)
 542                 obd_devs[i] = NULL;
 543
 544         /* Default the dirty page cache cap to 1/2 of system memory.
 545          * For clients with less memory, a larger fraction is needed
 546          * for other purposes (mostly for BGL). */
 547         if (cfs_num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
 548                 obd_max_dirty_pages = cfs_num_physpages / 4;
 549         else
 550                 obd_max_dirty_pages = cfs_num_physpages / 2;
 551
 552         err = obd_init_caches();
 553         if (err)
 554                 return err;
 555 #ifdef __KERNEL__
 556         err = class_procfs_init();
 557         if (err)
 558                 return err;
 559 #endif
 560
 561         err = lu_global_init();
 562         if (err)
 563                 return err;
 564
 565 #ifdef __KERNEL__
 566         err = lustre_register_fs();
 567 #endif
 568
 569         return err;
 570 }
 571
 572 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 573  * ifdef to the end of the file to cover module and versioning goo.*/
 574 #ifdef __KERNEL__
 575 static void cleanup_obdclass(void)
 576 {
 577         int i;
 578         int lustre_unregister_fs(void);
 579         __u64 memory_leaked, pages_leaked;
 580         __u64 memory_max, pages_max;
 581         ENTRY;
 582
 583         lustre_unregister_fs();
 584
 585         cfs_psdev_deregister(&obd_psdev);
 586         for (i = 0; i < class_devno_max(); i++) {
 587                 struct obd_device *obd = class_num2obd(i);
 588                 if (obd && obd->obd_set_up &&
 589                     OBT(obd) && OBP(obd, detach)) {
 590                         /* XXX should this call generic detach otherwise? */
 591                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 592                         OBP(obd, detach)(obd);
 593                 }
 594         }
 595         lu_global_fini();
 596
 597         obd_cleanup_caches();
 598         obd_sysctl_clean();
 599
 600         class_procfs_clean();
 601
 602         class_handle_cleanup();
 603         class_exit_uuidlist();
 604         obd_zombie_impexp_stop();
 605
 606         memory_leaked = obd_memory_sum();
 607         pages_leaked = obd_pages_sum();
 608
 609         memory_max = obd_memory_max();
 610         pages_max = obd_pages_max();
 611
 612         lprocfs_free_stats(&obd_memory);
 613         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 614                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 615                memory_max, memory_leaked);
 616         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 617                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 618                pages_max, pages_leaked);
 619
 620         EXIT;
 621 }
 622
 623 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 624 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 625 MODULE_LICENSE("GPL");
 626
 627 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 628 #endif