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 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 <lnet/lnetctl.h>
  50 #include <lustre_debug.h>
  51 #include <lprocfs_status.h>
  52 #include <lustre/lustre_build_version.h>
  53 #include <libcfs/list.h>
  54 #include "llog_internal.h"
  55
  56 #ifndef __KERNEL__
  57 /* liblustre workaround */
  58 cfs_atomic_t libcfs_kmemory = {0};
  59 #endif
  60
  61 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  62 cfs_list_t obd_types;
  63 cfs_rwlock_t obd_dev_lock = CFS_RW_LOCK_UNLOCKED;
  64
  65 #ifndef __KERNEL__
  66 __u64 obd_max_pages = 0;
  67 __u64 obd_max_alloc = 0;
  68 __u64 obd_alloc;
  69 __u64 obd_pages;
  70 #endif
  71
  72 /* The following are visible and mutable through /proc/sys/lustre/. */
  73 unsigned int obd_debug_peer_on_timeout;
  74 unsigned int obd_dump_on_timeout;
  75 unsigned int obd_dump_on_eviction;
  76 unsigned int obd_max_dirty_pages = 256;
  77 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  78 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  79 /* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
  80 unsigned int at_min = 0;
  81 unsigned int at_max = 600;
  82 unsigned int at_history = 600;
  83 int at_early_margin = 5;
  84 int at_extra = 30;
  85
  86 cfs_atomic_t obd_dirty_pages;
  87 cfs_atomic_t obd_dirty_transit_pages;
  88
  89 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
  90 EXPORT_SYMBOL(obd_jobid_var);
  91
  92 /* Get jobid of current process by reading the environment variable
  93  * stored in between the "env_start" & "env_end" of task struct.
  94  *
  95  * TODO:
  96  * It's better to cache the jobid for later use if there is any
  97  * efficient way, the cl_env code probably could be reused for this
  98  * purpose.
  99  *
 100  * If some job scheduler doesn't store jobid in the "env_start/end",
 101  * then an upcall could be issued here to get the jobid by utilizing
 102  * the userspace tools/api. Then, the jobid must be cached.
 103  */
 104 int lustre_get_jobid(char *jobid)
 105 {
 106 #ifdef __KERNEL__
 107         int jobid_len = JOBSTATS_JOBID_SIZE;
 108 #endif
 109         int ret = 0;
 110         ENTRY;
 111
 112         memset(jobid, 0, JOBSTATS_JOBID_SIZE);
 113         /* Jobstats isn't enabled */
 114         if (!memcmp(obd_jobid_var, JOBSTATS_DISABLE,
 115                     strlen(JOBSTATS_DISABLE))) {
 116                 RETURN(0);
 117         }
 118
 119         /* Use process name + fsuid as jobid */
 120         if (!memcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID,
 121                     strlen(JOBSTATS_PROCNAME_UID))) {
 122                 snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s_%u",
 123                          cfs_curproc_comm(), cfs_curproc_fsuid());
 124                 RETURN(0);
 125         }
 126
 127 #ifdef __KERNEL__
 128         ret = cfs_get_environ(obd_jobid_var, jobid, &jobid_len);
 129         if (ret) {
 130                 CDEBUG((ret != -ENOENT && ret != -EINVAL) ? D_ERROR : D_INFO,
 131                        "Get jobid for (%s) failed(%d).\n", obd_jobid_var, ret);
 132         }
 133 #endif
 134         RETURN(ret);
 135 }
 136 EXPORT_SYMBOL(lustre_get_jobid);
 137
 138 static inline void obd_data2conn(struct lustre_handle *conn,
 139                                  struct obd_ioctl_data *data)
 140 {
 141         memset(conn, 0, sizeof *conn);
 142         conn->cookie = data->ioc_cookie;
 143 }
 144
 145 static inline void obd_conn2data(struct obd_ioctl_data *data,
 146                                  struct lustre_handle *conn)
 147 {
 148         data->ioc_cookie = conn->cookie;
 149 }
 150
 151 int class_resolve_dev_name(__u32 len, const char *name)
 152 {
 153         int rc;
 154         int dev;
 155
 156         ENTRY;
 157         if (!len || !name) {
 158                 CERROR("No name passed,!\n");
 159                 GOTO(out, rc = -EINVAL);
 160         }
 161         if (name[len - 1] != 0) {
 162                 CERROR("Name not nul terminated!\n");
 163                 GOTO(out, rc = -EINVAL);
 164         }
 165
 166         CDEBUG(D_IOCTL, "device name %s\n", name);
 167         dev = class_name2dev(name);
 168         if (dev == -1) {
 169                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 170                 GOTO(out, rc = -EINVAL);
 171         }
 172
 173         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 174         rc = dev;
 175
 176 out:
 177         RETURN(rc);
 178 }
 179
 180 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 181 {
 182         char *buf = NULL;
 183         struct obd_ioctl_data *data;
 184         struct libcfs_debug_ioctl_data *debug_data;
 185         struct obd_device *obd = NULL;
 186         int err = 0, len = 0;
 187         ENTRY;
 188
 189         /* only for debugging */
 190         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 191                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 192                 libcfs_subsystem_debug = debug_data->subs;
 193                 libcfs_debug = debug_data->debug;
 194                 return 0;
 195         }
 196
 197         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 198         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 199                 CERROR("OBD ioctl: data error\n");
 200                 RETURN(-EINVAL);
 201         }
 202         data = (struct obd_ioctl_data *)buf;
 203
 204         switch (cmd) {
 205         case OBD_IOC_PROCESS_CFG: {
 206                 struct lustre_cfg *lcfg;
 207
 208                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 209                         CERROR("No config buffer passed!\n");
 210                         GOTO(out, err = -EINVAL);
 211                 }
 212                 OBD_ALLOC(lcfg, data->ioc_plen1);
 213                 if (lcfg == NULL)
 214                         GOTO(out, err = -ENOMEM);
 215                 err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
 216                                          data->ioc_plen1);
 217                 if (!err)
 218                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 219                 if (!err)
 220                         err = class_process_config(lcfg);
 221
 222                 OBD_FREE(lcfg, data->ioc_plen1);
 223                 GOTO(out, err);
 224         }
 225
 226         case OBD_GET_VERSION:
 227                 if (!data->ioc_inlbuf1) {
 228                         CERROR("No buffer passed in ioctl\n");
 229                         GOTO(out, err = -EINVAL);
 230                 }
 231
 232                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 233                         CERROR("ioctl buffer too small to hold version\n");
 234                         GOTO(out, err = -EINVAL);
 235                 }
 236
 237                 memcpy(data->ioc_bulk, BUILD_VERSION,
 238                        strlen(BUILD_VERSION) + 1);
 239
 240                 err = obd_ioctl_popdata((void *)arg, data, len);
 241                 if (err)
 242                         err = -EFAULT;
 243                 GOTO(out, err);
 244
 245         case OBD_IOC_NAME2DEV: {
 246                 /* Resolve a device name.  This does not change the
 247                  * currently selected device.
 248                  */
 249                 int dev;
 250
 251                 dev = class_resolve_dev_name(data->ioc_inllen1,
 252                                              data->ioc_inlbuf1);
 253                 data->ioc_dev = dev;
 254                 if (dev < 0)
 255                         GOTO(out, err = -EINVAL);
 256
 257                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 258                 if (err)
 259                         err = -EFAULT;
 260                 GOTO(out, err);
 261         }
 262
 263         case OBD_IOC_UUID2DEV: {
 264                 /* Resolve a device uuid.  This does not change the
 265                  * currently selected device.
 266                  */
 267                 int dev;
 268                 struct obd_uuid uuid;
 269
 270                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 271                         CERROR("No UUID passed!\n");
 272                         GOTO(out, err = -EINVAL);
 273                 }
 274                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 275                         CERROR("UUID not NUL terminated!\n");
 276                         GOTO(out, err = -EINVAL);
 277                 }
 278
 279                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 280                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 281                 dev = class_uuid2dev(&uuid);
 282                 data->ioc_dev = dev;
 283                 if (dev == -1) {
 284                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 285                                data->ioc_inlbuf1);
 286                         GOTO(out, err = -EINVAL);
 287                 }
 288
 289                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 290                        dev);
 291                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 292                 if (err)
 293                         err = -EFAULT;
 294                 GOTO(out, err);
 295         }
 296
 297         case OBD_IOC_CLOSE_UUID: {
 298                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 299                        data->ioc_inlbuf1);
 300                 GOTO(out, err = 0);
 301         }
 302
 303         case OBD_IOC_GETDEVICE: {
 304                 int     index = data->ioc_count;
 305                 char    *status, *str;
 306
 307                 if (!data->ioc_inlbuf1) {
 308                         CERROR("No buffer passed in ioctl\n");
 309                         GOTO(out, err = -EINVAL);
 310                 }
 311                 if (data->ioc_inllen1 < 128) {
 312                         CERROR("ioctl buffer too small to hold version\n");
 313                         GOTO(out, err = -EINVAL);
 314                 }
 315
 316                 obd = class_num2obd(index);
 317                 if (!obd)
 318                         GOTO(out, err = -ENOENT);
 319
 320                 if (obd->obd_stopping)
 321                         status = "ST";
 322                 else if (obd->obd_set_up)
 323                         status = "UP";
 324                 else if (obd->obd_attached)
 325                         status = "AT";
 326                 else
 327                         status = "--";
 328                 str = (char *)data->ioc_bulk;
 329                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 330                          (int)index, status, obd->obd_type->typ_name,
 331                          obd->obd_name, obd->obd_uuid.uuid,
 332                          cfs_atomic_read(&obd->obd_refcount));
 333                 err = obd_ioctl_popdata((void *)arg, data, len);
 334
 335                 GOTO(out, err = 0);
 336         }
 337
 338         }
 339
 340         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 341                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 342                         GOTO(out, err = -EINVAL);
 343                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 344                         GOTO(out, err = -EINVAL);
 345                 obd = class_name2obd(data->ioc_inlbuf4);
 346         } else if (data->ioc_dev < class_devno_max()) {
 347                 obd = class_num2obd(data->ioc_dev);
 348         } else {
 349                 CERROR("OBD ioctl: No device\n");
 350                 GOTO(out, err = -EINVAL);
 351         }
 352
 353         if (obd == NULL) {
 354                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 355                 GOTO(out, err = -EINVAL);
 356         }
 357         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 358
 359         if (!obd->obd_set_up || obd->obd_stopping) {
 360                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 361                 GOTO(out, err = -EINVAL);
 362         }
 363
 364         switch(cmd) {
 365         case OBD_IOC_NO_TRANSNO: {
 366                 if (!obd->obd_attached) {
 367                         CERROR("Device %d not attached\n", obd->obd_minor);
 368                         GOTO(out, err = -ENODEV);
 369                 }
 370                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 371                        obd->obd_name);
 372                 obd->obd_no_transno = 1;
 373                 GOTO(out, err = 0);
 374         }
 375
 376         default: {
 377                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 378                 if (err)
 379                         GOTO(out, err);
 380
 381                 err = obd_ioctl_popdata((void *)arg, data, len);
 382                 if (err)
 383                         err = -EFAULT;
 384                 GOTO(out, err);
 385         }
 386         }
 387
 388  out:
 389         if (buf)
 390                 obd_ioctl_freedata(buf, len);
 391         RETURN(err);
 392 } /* class_handle_ioctl */
 393
 394
 395
 396 #ifdef __KERNEL__
 397 extern cfs_psdev_t obd_psdev;
 398 #else
 399 void *obd_psdev = NULL;
 400 #endif
 401
 402 EXPORT_SYMBOL(obd_devs);
 403 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
 404 EXPORT_SYMBOL(obd_dump_on_timeout);
 405 EXPORT_SYMBOL(obd_dump_on_eviction);
 406 EXPORT_SYMBOL(obd_timeout);
 407 EXPORT_SYMBOL(ldlm_timeout);
 408 EXPORT_SYMBOL(obd_max_dirty_pages);
 409 EXPORT_SYMBOL(obd_dirty_pages);
 410 EXPORT_SYMBOL(obd_dirty_transit_pages);
 411 EXPORT_SYMBOL(at_min);
 412 EXPORT_SYMBOL(at_max);
 413 EXPORT_SYMBOL(at_extra);
 414 EXPORT_SYMBOL(at_early_margin);
 415 EXPORT_SYMBOL(at_history);
 416 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 417 EXPORT_SYMBOL(proc_lustre_root);
 418
 419 /* uuid.c */
 420 EXPORT_SYMBOL(class_uuid_unparse);
 421 EXPORT_SYMBOL(lustre_uuid_to_peer);
 422
 423 EXPORT_SYMBOL(class_handle_hash);
 424 EXPORT_SYMBOL(class_handle_unhash);
 425 EXPORT_SYMBOL(class_handle_hash_back);
 426 EXPORT_SYMBOL(class_handle2object);
 427 EXPORT_SYMBOL(class_handle_free_cb);
 428
 429 /* obd_config.c */
 430 EXPORT_SYMBOL(class_incref);
 431 EXPORT_SYMBOL(class_decref);
 432 EXPORT_SYMBOL(class_get_profile);
 433 EXPORT_SYMBOL(class_del_profile);
 434 EXPORT_SYMBOL(class_del_profiles);
 435 EXPORT_SYMBOL(class_process_config);
 436 EXPORT_SYMBOL(class_process_proc_param);
 437 EXPORT_SYMBOL(class_config_parse_llog);
 438 EXPORT_SYMBOL(class_config_dump_llog);
 439 EXPORT_SYMBOL(class_attach);
 440 EXPORT_SYMBOL(class_setup);
 441 EXPORT_SYMBOL(class_cleanup);
 442 EXPORT_SYMBOL(class_detach);
 443 EXPORT_SYMBOL(class_manual_cleanup);
 444
 445 /* mea.c */
 446 EXPORT_SYMBOL(mea_name2idx);
 447 EXPORT_SYMBOL(raw_name2idx);
 448
 449 #define OBD_INIT_CHECK
 450 #ifdef OBD_INIT_CHECK
 451 int obd_init_checks(void)
 452 {
 453         __u64 u64val, div64val;
 454         char buf[64];
 455         int len, ret = 0;
 456
 457         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 458
 459         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 460
 461         u64val = OBD_OBJECT_EOF;
 462         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 463         if (u64val != OBD_OBJECT_EOF) {
 464                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 465                        u64val, (int)sizeof(u64val));
 466                 ret = -EINVAL;
 467         }
 468         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 469         if (len != 18) {
 470                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 471                 ret = -EINVAL;
 472         }
 473
 474         div64val = OBD_OBJECT_EOF;
 475         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 476         if (u64val != OBD_OBJECT_EOF) {
 477                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 478                        u64val, (int)sizeof(u64val));
 479                 ret = -EOVERFLOW;
 480         }
 481         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 482                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 483                        u64val, (int)sizeof(u64val));
 484                 return -EOVERFLOW;
 485         }
 486         if (do_div(div64val, 256) != (u64val & 255)) {
 487                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 488                 return -EOVERFLOW;
 489         }
 490         if (u64val >> 8 != div64val) {
 491                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 492                        u64val, div64val, u64val >> 8);
 493                 return -EOVERFLOW;
 494         }
 495         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 496         if (len != 18) {
 497                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 498                 ret = -EINVAL;
 499         }
 500         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 501         if (len != 20) {
 502                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 503                 ret = -EINVAL;
 504         }
 505         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 506         if (len != 2) {
 507                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 508                 ret = -EINVAL;
 509         }
 510         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 511                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 512                       (__u64)CFS_PAGE_SIZE);
 513                 ret = -EINVAL;
 514         }
 515
 516         return ret;
 517 }
 518 #else
 519 #define obd_init_checks() do {} while(0)
 520 #endif
 521
 522 extern cfs_spinlock_t obd_types_lock;
 523 extern int class_procfs_init(void);
 524 extern int class_procfs_clean(void);
 525
 526 #ifdef __KERNEL__
 527 static int __init init_obdclass(void)
 528 #else
 529 int init_obdclass(void)
 530 #endif
 531 {
 532         int i, err;
 533 #ifdef __KERNEL__
 534         int lustre_register_fs(void);
 535
 536         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 537                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 538 #endif
 539
 540         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 541
 542         cfs_spin_lock_init(&obd_types_lock);
 543         obd_zombie_impexp_init();
 544 #ifdef LPROCFS
 545         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 546                                          LPROCFS_STATS_FLAG_NONE);
 547         if (obd_memory == NULL) {
 548                 CERROR("kmalloc of 'obd_memory' failed\n");
 549                 RETURN(-ENOMEM);
 550         }
 551
 552         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 553                              LPROCFS_CNTR_AVGMINMAX,
 554                              "memused", "bytes");
 555         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 556                              LPROCFS_CNTR_AVGMINMAX,
 557                              "pagesused", "pages");
 558 #endif
 559         err = obd_init_checks();
 560         if (err == -EOVERFLOW)
 561                 return err;
 562
 563         class_init_uuidlist();
 564         err = class_handle_init();
 565         if (err)
 566                 return err;
 567
 568         CFS_INIT_LIST_HEAD(&obd_types);
 569
 570         err = cfs_psdev_register(&obd_psdev);
 571         if (err) {
 572                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 573                 return err;
 574         }
 575
 576         /* This struct is already zeroed for us (static global) */
 577         for (i = 0; i < class_devno_max(); i++)
 578                 obd_devs[i] = NULL;
 579
 580         /* Default the dirty page cache cap to 1/2 of system memory.
 581          * For clients with less memory, a larger fraction is needed
 582          * for other purposes (mostly for BGL). */
 583         if (cfs_num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
 584                 obd_max_dirty_pages = cfs_num_physpages / 4;
 585         else
 586                 obd_max_dirty_pages = cfs_num_physpages / 2;
 587
 588         err = obd_init_caches();
 589         if (err)
 590                 return err;
 591 #ifdef __KERNEL__
 592         err = class_procfs_init();
 593         if (err)
 594                 return err;
 595 #endif
 596
 597         err = lu_global_init();
 598         if (err)
 599                 return err;
 600
 601 #ifdef __KERNEL__
 602         err = lustre_register_fs();
 603 #endif
 604
 605         return err;
 606 }
 607
 608 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 609  * ifdef to the end of the file to cover module and versioning goo.*/
 610 #ifdef __KERNEL__
 611 static void cleanup_obdclass(void)
 612 {
 613         int i;
 614         int lustre_unregister_fs(void);
 615         __u64 memory_leaked, pages_leaked;
 616         __u64 memory_max, pages_max;
 617         ENTRY;
 618
 619         lustre_unregister_fs();
 620
 621         cfs_psdev_deregister(&obd_psdev);
 622         for (i = 0; i < class_devno_max(); i++) {
 623                 struct obd_device *obd = class_num2obd(i);
 624                 if (obd && obd->obd_set_up &&
 625                     OBT(obd) && OBP(obd, detach)) {
 626                         /* XXX should this call generic detach otherwise? */
 627                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 628                         OBP(obd, detach)(obd);
 629                 }
 630         }
 631         lu_global_fini();
 632
 633         obd_cleanup_caches();
 634         obd_sysctl_clean();
 635
 636         class_procfs_clean();
 637
 638         class_handle_cleanup();
 639         class_exit_uuidlist();
 640         obd_zombie_impexp_stop();
 641
 642         memory_leaked = obd_memory_sum();
 643         pages_leaked = obd_pages_sum();
 644
 645         memory_max = obd_memory_max();
 646         pages_max = obd_pages_max();
 647
 648         lprocfs_free_stats(&obd_memory);
 649         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 650                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 651                memory_max, memory_leaked);
 652         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 653                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 654                pages_max, pages_leaked);
 655
 656         EXIT;
 657 }
 658
 659 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 660 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 661 MODULE_LICENSE("GPL");
 662
 663 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 664 #endif