lustre/quota/lproc_quota.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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011, Whamcloud, Inc.
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  */
  38
  39 #define DEBUG_SUBSYSTEM S_LQUOTA
  40
  41 #include <linux/version.h>
  42 #include <lprocfs_status.h>
  43 #include <obd.h>
  44 #include <linux/seq_file.h>
  45 #include <lustre_fsfilt.h>
  46
  47 #include "quota_internal.h"
  48
  49 #ifdef HAVE_QUOTA_SUPPORT
  50
  51 #ifdef LPROCFS
  52 int lprocfs_quota_rd_bunit(char *page, char **start, off_t off, int count,
  53                            int *eof, void *data)
  54 {
  55         struct obd_device *obd = (struct obd_device *)data;
  56         LASSERT(obd != NULL);
  57
  58         return snprintf(page, count, "%lu\n",
  59                         obd->u.obt.obt_qctxt.lqc_bunit_sz);
  60 }
  61 EXPORT_SYMBOL(lprocfs_quota_rd_bunit);
  62
  63 int lprocfs_quota_wr_bunit(struct file *file, const char *buffer,
  64                            unsigned long count, void *data)
  65 {
  66         struct obd_device *obd = (struct obd_device *)data;
  67         int val, rc;
  68         LASSERT(obd != NULL);
  69
  70         rc = lprocfs_write_helper(buffer, count, &val);
  71         if (rc)
  72                 return rc;
  73
  74         if (val % QUOTABLOCK_SIZE ||
  75             val <= obd->u.obt.obt_qctxt.lqc_btune_sz)
  76                 return -EINVAL;
  77
  78         obd->u.obt.obt_qctxt.lqc_bunit_sz = val;
  79         return count;
  80 }
  81 EXPORT_SYMBOL(lprocfs_quota_wr_bunit);
  82
  83 int lprocfs_quota_rd_btune(char *page, char **start, off_t off, int count,
  84                            int *eof, void *data)
  85 {
  86         struct obd_device *obd = (struct obd_device *)data;
  87         LASSERT(obd != NULL);
  88
  89         return snprintf(page, count, "%lu\n",
  90                         obd->u.obt.obt_qctxt.lqc_btune_sz);
  91 }
  92 EXPORT_SYMBOL(lprocfs_quota_rd_btune);
  93
  94 int lprocfs_quota_wr_btune(struct file *file, const char *buffer,
  95                            unsigned long count, void *data)
  96 {
  97         struct obd_device *obd = (struct obd_device *)data;
  98         int val, rc;
  99         LASSERT(obd != NULL);
 100
 101         rc = lprocfs_write_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         if (val <= QUOTABLOCK_SIZE * MIN_QLIMIT || val % QUOTABLOCK_SIZE ||
 106             val >= obd->u.obt.obt_qctxt.lqc_bunit_sz)
 107                 return -EINVAL;
 108
 109         obd->u.obt.obt_qctxt.lqc_btune_sz = val;
 110         return count;
 111 }
 112 EXPORT_SYMBOL(lprocfs_quota_wr_btune);
 113
 114 int lprocfs_quota_rd_iunit(char *page, char **start, off_t off, int count,
 115                            int *eof, void *data)
 116 {
 117         struct obd_device *obd = (struct obd_device *)data;
 118         LASSERT(obd != NULL);
 119
 120         return snprintf(page, count, "%lu\n",
 121                         obd->u.obt.obt_qctxt.lqc_iunit_sz);
 122 }
 123 EXPORT_SYMBOL(lprocfs_quota_rd_iunit);
 124
 125 int lprocfs_quota_wr_iunit(struct file *file, const char *buffer,
 126                            unsigned long count, void *data)
 127 {
 128         struct obd_device *obd = (struct obd_device *)data;
 129         int val, rc;
 130         LASSERT(obd != NULL);
 131
 132         rc = lprocfs_write_helper(buffer, count, &val);
 133         if (rc)
 134                 return rc;
 135
 136         if (val <= obd->u.obt.obt_qctxt.lqc_itune_sz)
 137                 return -EINVAL;
 138
 139         obd->u.obt.obt_qctxt.lqc_iunit_sz = val;
 140         return count;
 141 }
 142 EXPORT_SYMBOL(lprocfs_quota_wr_iunit);
 143
 144 int lprocfs_quota_rd_itune(char *page, char **start, off_t off, int count,
 145                            int *eof, void *data)
 146 {
 147         struct obd_device *obd = (struct obd_device *)data;
 148         LASSERT(obd != NULL);
 149
 150         return snprintf(page, count, "%lu\n",
 151                         obd->u.obt.obt_qctxt.lqc_itune_sz);
 152 }
 153 EXPORT_SYMBOL(lprocfs_quota_rd_itune);
 154
 155 int lprocfs_quota_wr_itune(struct file *file, const char *buffer,
 156                            unsigned long count, void *data)
 157 {
 158         struct obd_device *obd = (struct obd_device *)data;
 159         int val, rc;
 160         LASSERT(obd != NULL);
 161
 162         rc = lprocfs_write_helper(buffer, count, &val);
 163         if (rc)
 164                 return rc;
 165
 166         if (val <= MIN_QLIMIT ||
 167             val >= obd->u.obt.obt_qctxt.lqc_iunit_sz)
 168                 return -EINVAL;
 169
 170         obd->u.obt.obt_qctxt.lqc_itune_sz = val;
 171         return count;
 172 }
 173 EXPORT_SYMBOL(lprocfs_quota_wr_itune);
 174
 175 #define USER_QUOTA      1
 176 #define GROUP_QUOTA     2
 177
 178 #define MAX_STYPE_SIZE  5
 179
 180 int lprocfs_quota_rd_type(char *page, char **start, off_t off, int count,
 181                           int *eof, void *data)
 182 {
 183         struct obd_device *obd = (struct obd_device *)data;
 184         char stype[MAX_STYPE_SIZE + 1] = "";
 185         int oq_type;
 186
 187         LASSERT(obd != NULL);
 188
 189         /* Collect the needed information */
 190         oq_type = obd->u.obt.obt_qctxt.lqc_flags;
 191
 192         /* Transform the collected data into a user-readable string */
 193         if (oq_type & LQC_USRQUOTA_FLAG)
 194                 strcat(stype, "u");
 195         if (oq_type & LQC_GRPQUOTA_FLAG)
 196                 strcat(stype, "g");
 197
 198         strcat(stype, "3");
 199
 200         return snprintf(page, count, "%s\n", stype);
 201 }
 202 EXPORT_SYMBOL(lprocfs_quota_rd_type);
 203
 204 /*
 205  * generic_quota_on is very lazy and tolerant about current quota settings
 206  * @global means to turn on quotas on each OST additionally to local quotas;
 207  * should not be called from filter_quota_ctl on MDS nodes (as it starts
 208  * admin quotas on MDS nodes).
 209  */
 210 int generic_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl, int global)
 211 {
 212         struct obd_device_target *obt = &obd->u.obt;
 213         struct lvfs_run_ctxt saved;
 214         int id, is_master, rc = 0, local; /* means we need a local quotaon */
 215
 216         cfs_down(&obt->obt_quotachecking);
 217         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 218         id = UGQUOTA2LQC(oqctl->qc_type);
 219         local = (obt->obt_qctxt.lqc_flags & id) != id;
 220
 221         oqctl->qc_cmd = Q_QUOTAON;
 222         oqctl->qc_id = obt->obt_qfmt;
 223
 224         is_master = !strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME);
 225         if (is_master) {
 226                 cfs_down_write(&obd->u.mds.mds_qonoff_sem);
 227                 if (local) {
 228                         /* turn on cluster wide quota */
 229                         rc = mds_admin_quota_on(obd, oqctl);
 230                         if (rc && rc != -ENOENT)
 231                                 CERROR("%s: %s admin quotaon failed. rc=%d\n",
 232                                        obd->obd_name, global ? "global":"local",
 233                                        rc);
 234                 }
 235         }
 236
 237         if (rc == 0) {
 238                 if (local) {
 239                         rc = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
 240                         if (rc) {
 241                                 if (rc != -ENOENT)
 242                                         CERROR("%s: %s quotaon failed with"
 243                                                " rc=%d\n", obd->obd_name,
 244                                                global ? "global" : "local", rc);
 245                         } else {
 246                                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 247                                 build_lqs(obd);
 248                         }
 249                 }
 250
 251                 if (rc == 0 && global && is_master)
 252                         rc = obd_quotactl(obd->u.mds.mds_lov_exp, oqctl);
 253         }
 254
 255         if (is_master)
 256                 cfs_up_write(&obd->u.mds.mds_qonoff_sem);
 257
 258         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 259         cfs_up(&obt->obt_quotachecking);
 260
 261         CDEBUG(D_QUOTA, "%s: quotaon type:master:global:local:flags:rc "
 262                "%u:%d:%d:%d:%lu:%d\n",
 263                obd->obd_name, oqctl->qc_type, is_master, global, local,
 264                obt->obt_qctxt.lqc_flags, rc);
 265
 266         return rc;
 267 }
 268
 269 static int auto_quota_on(struct obd_device *obd, int type)
 270 {
 271         struct obd_quotactl *oqctl;
 272         int rc;
 273         ENTRY;
 274
 275         LASSERT(type == USRQUOTA || type == GRPQUOTA || type == UGQUOTA);
 276
 277         OBD_ALLOC_PTR(oqctl);
 278         if (!oqctl)
 279                 RETURN(-ENOMEM);
 280
 281         oqctl->qc_type = type;
 282
 283         rc = generic_quota_on(obd, oqctl, 0);
 284
 285         OBD_FREE_PTR(oqctl);
 286         RETURN(rc);
 287 }
 288
 289 int lprocfs_quota_wr_type(struct file *file, const char *buffer,
 290                           unsigned long count, void *data)
 291 {
 292         struct obd_device *obd = (struct obd_device *)data;
 293         int type = 0;
 294         unsigned long i;
 295         char stype[MAX_STYPE_SIZE + 1] = "";
 296
 297         LASSERT(obd != NULL);
 298
 299         if (count > MAX_STYPE_SIZE)
 300                 return -EINVAL;
 301
 302         if (cfs_copy_from_user(stype, buffer, count))
 303                 return -EFAULT;
 304
 305         for (i = 0 ; i < count ; i++) {
 306                 switch (stype[i]) {
 307                 case 'u' :
 308                         type |= USER_QUOTA;
 309                         break;
 310                 case 'g' :
 311                         type |= GROUP_QUOTA;
 312                         break;
 313                 case '1' :
 314                 case '2' :
 315                         CWARN("quota_type options 1 and 2 are obsolete, "
 316                               "they will be ignored\n");
 317                         break;
 318                 case '3' : /* the only valid version spec, do nothing */
 319                 default  : /* just skip stray symbols like \n */
 320                         break;
 321                 }
 322         }
 323
 324         if (type != 0) {
 325                 int rc = auto_quota_on(obd, type - 1);
 326
 327                 if (rc && rc != -EALREADY && rc != -ENOENT)
 328                         return rc;
 329         }
 330
 331         return count;
 332 }
 333 EXPORT_SYMBOL(lprocfs_quota_wr_type);
 334
 335 int lprocfs_quota_rd_switch_seconds(char *page, char **start, off_t off,
 336                                     int count, int *eof, void *data)
 337 {
 338         struct obd_device *obd = (struct obd_device *)data;
 339         LASSERT(obd != NULL);
 340
 341         return snprintf(page, count, "%d\n",
 342                         obd->u.obt.obt_qctxt.lqc_switch_seconds);
 343 }
 344 EXPORT_SYMBOL(lprocfs_quota_rd_switch_seconds);
 345
 346 int lprocfs_quota_wr_switch_seconds(struct file *file, const char *buffer,
 347                                     unsigned long count, void *data)
 348 {
 349         struct obd_device *obd = (struct obd_device *)data;
 350         int val, rc;
 351         LASSERT(obd != NULL);
 352
 353         rc = lprocfs_write_helper(buffer, count, &val);
 354         if (rc)
 355                 return rc;
 356
 357         if (val <= 10)
 358                 return -EINVAL;
 359
 360         obd->u.obt.obt_qctxt.lqc_switch_seconds = val;
 361         return count;
 362 }
 363 EXPORT_SYMBOL(lprocfs_quota_wr_switch_seconds);
 364
 365 int lprocfs_quota_rd_sync_blk(char *page, char **start, off_t off,
 366                               int count, int *eof, void *data)
 367 {
 368         struct obd_device *obd = (struct obd_device *)data;
 369         LASSERT(obd != NULL);
 370
 371         return snprintf(page, count, "%d\n",
 372                         obd->u.obt.obt_qctxt.lqc_sync_blk);
 373 }
 374 EXPORT_SYMBOL(lprocfs_quota_rd_sync_blk);
 375
 376 int lprocfs_quota_wr_sync_blk(struct file *file, const char *buffer,
 377                               unsigned long count, void *data)
 378 {
 379         struct obd_device *obd = (struct obd_device *)data;
 380         int val, rc;
 381         LASSERT(obd != NULL);
 382
 383         rc = lprocfs_write_helper(buffer, count, &val);
 384         if (rc)
 385                 return rc;
 386
 387         if (val < 0)
 388                 return -EINVAL;
 389
 390         obd->u.obt.obt_qctxt.lqc_sync_blk = val;
 391         return count;
 392 }
 393 EXPORT_SYMBOL(lprocfs_quota_wr_sync_blk);
 394
 395 int lprocfs_quota_rd_switch_qs(char *page, char **start, off_t off,
 396                                int count, int *eof, void *data)
 397 {
 398         struct obd_device *obd = (struct obd_device *)data;
 399         LASSERT(obd != NULL);
 400
 401         return snprintf(page, count, "changing qunit size is %s\n",
 402                         obd->u.obt.obt_qctxt.lqc_switch_qs ?
 403                         "enabled" : "disabled");
 404 }
 405 EXPORT_SYMBOL(lprocfs_quota_rd_switch_qs);
 406
 407 int lprocfs_quota_wr_switch_qs(struct file *file, const char *buffer,
 408                                unsigned long count, void *data)
 409 {
 410         struct obd_device *obd = (struct obd_device *)data;
 411         int val, rc;
 412         LASSERT(obd != NULL);
 413
 414         rc = lprocfs_write_helper(buffer, count, &val);
 415         if (rc)
 416                 return rc;
 417
 418         if (val)
 419             obd->u.obt.obt_qctxt.lqc_switch_qs = 1;
 420         else
 421             obd->u.obt.obt_qctxt.lqc_switch_qs = 0;
 422
 423         return count;
 424 }
 425 EXPORT_SYMBOL(lprocfs_quota_wr_switch_qs);
 426
 427 int lprocfs_quota_rd_boundary_factor(char *page, char **start, off_t off,
 428                                      int count, int *eof, void *data)
 429 {
 430         struct obd_device *obd = (struct obd_device *)data;
 431         LASSERT(obd != NULL);
 432
 433
 434         return snprintf(page, count, "%lu\n",
 435                         obd->u.obt.obt_qctxt.lqc_cqs_boundary_factor);
 436 }
 437 EXPORT_SYMBOL(lprocfs_quota_rd_boundary_factor);
 438
 439 int lprocfs_quota_wr_boundary_factor(struct file *file, const char *buffer,
 440                                      unsigned long count, void *data)
 441 {
 442         struct obd_device *obd = (struct obd_device *)data;
 443         int val, rc;
 444         LASSERT(obd != NULL);
 445
 446         rc = lprocfs_write_helper(buffer, count, &val);
 447         if (rc)
 448                 return rc;
 449
 450         if (val < 2)
 451                 return -EINVAL;
 452
 453         obd->u.obt.obt_qctxt.lqc_cqs_boundary_factor = val;
 454         return count;
 455 }
 456 EXPORT_SYMBOL(lprocfs_quota_wr_boundary_factor);
 457
 458 int lprocfs_quota_rd_least_bunit(char *page, char **start, off_t off,
 459                                  int count, int *eof, void *data)
 460 {
 461         struct obd_device *obd = (struct obd_device *)data;
 462         LASSERT(obd != NULL);
 463
 464
 465         return snprintf(page, count, "%lu\n",
 466                         obd->u.obt.obt_qctxt.lqc_cqs_least_bunit);
 467 }
 468 EXPORT_SYMBOL(lprocfs_quota_rd_least_bunit);
 469
 470 int lprocfs_quota_wr_least_bunit(struct file *file, const char *buffer,
 471                                  unsigned long count, void *data)
 472 {
 473         struct obd_device *obd = (struct obd_device *)data;
 474         int val, rc;
 475         LASSERT(obd != NULL);
 476
 477         rc = lprocfs_write_helper(buffer, count, &val);
 478         if (rc)
 479                 return rc;
 480
 481         if (val < PTLRPC_MAX_BRW_SIZE ||
 482             val >= obd->u.obt.obt_qctxt.lqc_bunit_sz)
 483                 return -EINVAL;
 484
 485         obd->u.obt.obt_qctxt.lqc_cqs_least_bunit = val;
 486         return count;
 487 }
 488 EXPORT_SYMBOL(lprocfs_quota_wr_least_bunit);
 489
 490 int lprocfs_quota_rd_least_iunit(char *page, char **start, off_t off,
 491                                  int count, int *eof, void *data)
 492 {
 493         struct obd_device *obd = (struct obd_device *)data;
 494         LASSERT(obd != NULL);
 495
 496
 497         return snprintf(page, count, "%lu\n",
 498                         obd->u.obt.obt_qctxt.lqc_cqs_least_iunit);
 499 }
 500 EXPORT_SYMBOL(lprocfs_quota_rd_least_iunit);
 501
 502 int lprocfs_quota_wr_least_iunit(struct file *file, const char *buffer,
 503                                  unsigned long count, void *data)
 504 {
 505         struct obd_device *obd = (struct obd_device *)data;
 506         int val, rc;
 507         LASSERT(obd != NULL);
 508
 509         rc = lprocfs_write_helper(buffer, count, &val);
 510         if (rc)
 511                 return rc;
 512
 513         if (val < 1 || val >= obd->u.obt.obt_qctxt.lqc_iunit_sz)
 514                 return -EINVAL;
 515
 516         obd->u.obt.obt_qctxt.lqc_cqs_least_iunit = val;
 517         return count;
 518 }
 519 EXPORT_SYMBOL(lprocfs_quota_wr_least_iunit);
 520
 521 int lprocfs_quota_rd_qs_factor(char *page, char **start, off_t off,
 522                                int count, int *eof, void *data)
 523 {
 524         struct obd_device *obd = (struct obd_device *)data;
 525         LASSERT(obd != NULL);
 526
 527
 528         return snprintf(page, count, "%lu\n",
 529                         obd->u.obt.obt_qctxt.lqc_cqs_qs_factor);
 530 }
 531 EXPORT_SYMBOL(lprocfs_quota_rd_qs_factor);
 532
 533 int lprocfs_quota_wr_qs_factor(struct file *file, const char *buffer,
 534                                unsigned long count, void *data)
 535 {
 536         struct obd_device *obd = (struct obd_device *)data;
 537         int val, rc;
 538         LASSERT(obd != NULL);
 539
 540         rc = lprocfs_write_helper(buffer, count, &val);
 541         if (rc)
 542                 return rc;
 543
 544         if (val < 2)
 545                 return -EINVAL;
 546
 547         obd->u.obt.obt_qctxt.lqc_cqs_qs_factor = val;
 548         return count;
 549 }
 550 EXPORT_SYMBOL(lprocfs_quota_wr_qs_factor);
 551
 552 struct lprocfs_vars lprocfs_quota_common_vars[] = {
 553         { "quota_bunit_sz", lprocfs_quota_rd_bunit,
 554                             lprocfs_quota_wr_bunit, 0},
 555         { "quota_btune_sz", lprocfs_quota_rd_btune,
 556                             lprocfs_quota_wr_btune, 0},
 557         { "quota_iunit_sz", lprocfs_quota_rd_iunit,
 558                             lprocfs_quota_wr_iunit, 0},
 559         { "quota_itune_sz", lprocfs_quota_rd_itune,
 560                             lprocfs_quota_wr_itune, 0},
 561         { "quota_type",     lprocfs_quota_rd_type,
 562                             lprocfs_quota_wr_type, 0},
 563         { "quota_switch_seconds",  lprocfs_quota_rd_switch_seconds,
 564                                    lprocfs_quota_wr_switch_seconds, 0 },
 565         { "quota_sync_blk", lprocfs_quota_rd_sync_blk,
 566                             lprocfs_quota_wr_sync_blk, 0},
 567         { NULL }
 568 };
 569
 570 struct lprocfs_vars lprocfs_quota_master_vars[] = {
 571         { "quota_switch_qs", lprocfs_quota_rd_switch_qs,
 572                              lprocfs_quota_wr_switch_qs, 0 },
 573         { "quota_boundary_factor", lprocfs_quota_rd_boundary_factor,
 574                                    lprocfs_quota_wr_boundary_factor, 0 },
 575         { "quota_least_bunit", lprocfs_quota_rd_least_bunit,
 576                                lprocfs_quota_wr_least_bunit, 0 },
 577         { "quota_least_iunit", lprocfs_quota_rd_least_iunit,
 578                                lprocfs_quota_wr_least_iunit, 0 },
 579         { "quota_qs_factor",   lprocfs_quota_rd_qs_factor,
 580                                lprocfs_quota_wr_qs_factor, 0 },
 581         { NULL }
 582 };
 583
 584 int lquota_proc_setup(struct obd_device *obd, int is_master)
 585 {
 586         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 587         int rc = 0;
 588         ENTRY;
 589
 590         LASSERT(lquota_type_proc_dir && obd);
 591         qctxt->lqc_proc_dir = lprocfs_register(obd->obd_name,
 592                                                lquota_type_proc_dir,
 593                                                lprocfs_quota_common_vars, obd);
 594         if (IS_ERR(qctxt->lqc_proc_dir)) {
 595                 rc = PTR_ERR(qctxt->lqc_proc_dir);
 596                 CERROR("%s: error %d setting up lprocfs\n",
 597                        obd->obd_name, rc);
 598                 qctxt->lqc_proc_dir = NULL;
 599                 GOTO(out, rc);
 600         }
 601
 602         if (is_master) {
 603                 rc = lprocfs_add_vars(qctxt->lqc_proc_dir,
 604                                       lprocfs_quota_master_vars, obd);
 605                 if (rc) {
 606                         CERROR("%s: error %d setting up lprocfs for "
 607                                "quota master\n", obd->obd_name, rc);
 608                         GOTO(out_free_proc, rc);
 609                 }
 610         }
 611
 612         qctxt->lqc_stats = lprocfs_alloc_stats(LQUOTA_LAST_STAT -
 613                                                LQUOTA_FIRST_STAT, 0);
 614         if (!qctxt->lqc_stats)
 615                 GOTO(out_free_proc, rc = -ENOMEM);
 616
 617         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_SYNC_ACQ,
 618                              LPROCFS_CNTR_AVGMINMAX, "sync_acq_req", "us");
 619         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_SYNC_REL,
 620                              LPROCFS_CNTR_AVGMINMAX, "sync_rel_req", "us");
 621         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_ASYNC_ACQ,
 622                              LPROCFS_CNTR_AVGMINMAX, "async_acq_req", "us");
 623         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_ASYNC_REL,
 624                              LPROCFS_CNTR_AVGMINMAX, "async_rel_req", "us");
 625
 626         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_FOR_CHK_BLK,
 627                              LPROCFS_CNTR_AVGMINMAX,
 628                              "wait_for_blk_quota(lquota_chkquota)", "us");
 629         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_FOR_CHK_INO,
 630                              LPROCFS_CNTR_AVGMINMAX,
 631                              "wait_for_ino_quota(lquota_chkquota)", "us");
 632         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_FOR_COMMIT_BLK,
 633                              LPROCFS_CNTR_AVGMINMAX,
 634                              "wait_for_blk_quota(lquota_pending_commit)",
 635                              "us");
 636         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_FOR_COMMIT_INO,
 637                              LPROCFS_CNTR_AVGMINMAX,
 638                              "wait_for_ino_quota(lquota_pending_commit)",
 639                              "us");
 640
 641         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_PENDING_BLK_QUOTA,
 642                              LPROCFS_CNTR_AVGMINMAX,
 643                              "wait_for_pending_blk_quota_req"
 644                              "(qctxt_wait_pending_dqacq)", "us");
 645         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_WAIT_PENDING_INO_QUOTA,
 646                              LPROCFS_CNTR_AVGMINMAX,
 647                              "wait_for_pending_ino_quota_req"
 648                              "(qctxt_wait_pending_dqacq)", "us");
 649         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_NOWAIT_PENDING_BLK_QUOTA,
 650                              LPROCFS_CNTR_AVGMINMAX,
 651                              "nowait_for_pending_blk_quota_req"
 652                              "(qctxt_wait_pending_dqacq)", "us");
 653         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_NOWAIT_PENDING_INO_QUOTA,
 654                              LPROCFS_CNTR_AVGMINMAX,
 655                              "nowait_for_pending_ino_quota_req"
 656                              "(qctxt_wait_pending_dqacq)", "us");
 657
 658         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_QUOTA_CTL,
 659                              LPROCFS_CNTR_AVGMINMAX, "quota_ctl", "us");
 660         lprocfs_counter_init(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
 661                              LPROCFS_CNTR_AVGMINMAX, "adjust_qunit", "us");
 662
 663         lprocfs_register_stats(qctxt->lqc_proc_dir, "stats", qctxt->lqc_stats);
 664
 665         RETURN(rc);
 666
 667 out_free_proc:
 668         lprocfs_remove(&qctxt->lqc_proc_dir);
 669 out:
 670         RETURN(rc);
 671 }
 672
 673 int lquota_proc_cleanup(struct lustre_quota_ctxt *qctxt)
 674 {
 675         if (!qctxt || !qctxt->lqc_proc_dir)
 676                 return -EINVAL;
 677
 678         if (qctxt->lqc_stats != NULL)
 679                  lprocfs_free_stats(&qctxt->lqc_stats);
 680
 681         lprocfs_remove(&qctxt->lqc_proc_dir);
 682         return 0;
 683 }
 684
 685 #endif  /* LPROCFS */
 686 #endif