lustre/obdclass/lprocfs_status.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) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/obdclass/lprocfs_status.c
  37  *
  38  * Author: Hariharan Thantry <thantry@users.sourceforge.net>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_CLASS
  42
  43 #ifndef __KERNEL__
  44 #include <liblustre.h>
  45 #endif
  46
  47 #include <obd_class.h>
  48 #include <lprocfs_status.h>
  49 #include <lustre/lustre_idl.h>
  50
  51 #if defined(LPROCFS)
  52
  53 static int lprocfs_no_percpu_stats = 0;
  54 CFS_MODULE_PARM(lprocfs_no_percpu_stats, "i", int, 0644,
  55                 "Do not alloc percpu data for lprocfs stats");
  56
  57 #define MAX_STRING_SIZE 128
  58
  59 int lprocfs_single_release(struct inode *inode, struct file *file)
  60 {
  61         return single_release(inode, file);
  62 }
  63 EXPORT_SYMBOL(lprocfs_single_release);
  64
  65 int lprocfs_seq_release(struct inode *inode, struct file *file)
  66 {
  67         return seq_release(inode, file);
  68 }
  69 EXPORT_SYMBOL(lprocfs_seq_release);
  70
  71 #ifndef HAVE_ONLY_PROCFS_SEQ
  72 /* for b=10866, global variable */
  73 DECLARE_RWSEM(_lprocfs_lock);
  74 EXPORT_SYMBOL(_lprocfs_lock);
  75
  76 static struct proc_dir_entry *__lprocfs_srch(struct proc_dir_entry *head,
  77                                              const char *name)
  78 {
  79         struct proc_dir_entry *temp;
  80
  81         if (head == NULL)
  82                 return NULL;
  83
  84         temp = head->subdir;
  85         while (temp != NULL) {
  86                 if (strcmp(temp->name, name) == 0) {
  87                         return temp;
  88                 }
  89
  90                 temp = temp->next;
  91         }
  92         return NULL;
  93 }
  94
  95 struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
  96                                     const char *name)
  97 {
  98         struct proc_dir_entry *temp;
  99
 100         LPROCFS_SRCH_ENTRY();
 101         temp = __lprocfs_srch(head, name);
 102         LPROCFS_SRCH_EXIT();
 103         return temp;
 104 }
 105 EXPORT_SYMBOL(lprocfs_srch);
 106
 107 /* lprocfs API calls */
 108
 109 /* Function that emulates snprintf but also has the side effect of advancing
 110    the page pointer for the next write into the buffer, incrementing the total
 111    length written to the buffer, and decrementing the size left in the
 112    buffer. */
 113 #ifdef HAVE_SERVER_SUPPORT
 114 static int lprocfs_obd_snprintf(char **page, int end, int *len,
 115                                 const char *format, ...)
 116 {
 117         va_list list;
 118         int n;
 119
 120         if (*len >= end)
 121                 return 0;
 122
 123         va_start(list, format);
 124         n = vsnprintf(*page, end - *len, format, list);
 125         va_end(list);
 126
 127         *page += n; *len += n;
 128         return n;
 129 }
 130 #endif  /* HAVE_SERVER_SUPPORT */
 131 #endif  /* HAVE_ONLY_PROCFS_SEQ */
 132
 133 cfs_proc_dir_entry_t *lprocfs_add_simple(struct proc_dir_entry *root,
 134                                          char *name,
 135 #ifndef HAVE_ONLY_PROCFS_SEQ
 136                                          read_proc_t *read_proc,
 137                                          write_proc_t *write_proc,
 138 #endif
 139                                          void *data,
 140                                          struct file_operations *fops)
 141 {
 142         cfs_proc_dir_entry_t *proc;
 143         mode_t mode = 0;
 144
 145         if (root == NULL || name == NULL)
 146                 return ERR_PTR(-EINVAL);
 147
 148         if (!fops) {
 149 #ifndef HAVE_ONLY_PROCFS_SEQ
 150                 if (read_proc)
 151                         mode = 0444;
 152                 if (write_proc)
 153                         mode |= 0200;
 154
 155                 LPROCFS_WRITE_ENTRY();
 156                 proc = create_proc_entry(name, mode, root);
 157                 if (!proc) {
 158                         CERROR("LprocFS: No memory to create /proc entry %s", name);
 159                         LPROCFS_WRITE_EXIT();
 160                         return ERR_PTR(-ENOMEM);
 161                 }
 162                 proc->read_proc = read_proc;
 163                 proc->write_proc = write_proc;
 164                 proc->data = data;
 165                 LPROCFS_WRITE_EXIT();
 166 #else
 167                 return ERR_PTR(-EINVAL);
 168 #endif
 169         } else {
 170                 if (fops->read)
 171                         mode = 0444;
 172                 if (fops->write)
 173                         mode |= 0200;
 174                 proc = proc_create_data(name, mode, root, fops, data);
 175                 if (!proc) {
 176                         CERROR("LprocFS: No memory to create /proc entry %s",
 177                                name);
 178                         return ERR_PTR(-ENOMEM);
 179                 }
 180         }
 181         return proc;
 182 }
 183 EXPORT_SYMBOL(lprocfs_add_simple);
 184
 185 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
 186                         struct proc_dir_entry *parent, const char *format, ...)
 187 {
 188         struct proc_dir_entry *entry;
 189         char *dest;
 190         va_list ap;
 191
 192         if (parent == NULL || format == NULL)
 193                 return NULL;
 194
 195         OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
 196         if (dest == NULL)
 197                 return NULL;
 198
 199         va_start(ap, format);
 200         vsnprintf(dest, MAX_STRING_SIZE, format, ap);
 201         va_end(ap);
 202
 203         entry = proc_symlink(name, parent, dest);
 204         if (entry == NULL)
 205                 CERROR("LprocFS: Could not create symbolic link from %s to %s",
 206                         name, dest);
 207
 208         OBD_FREE(dest, MAX_STRING_SIZE + 1);
 209         return entry;
 210 }
 211 EXPORT_SYMBOL(lprocfs_add_symlink);
 212
 213 #ifndef HAVE_ONLY_PROCFS_SEQ
 214 static ssize_t lprocfs_fops_read(struct file *f, char __user *buf,
 215                                  size_t size, loff_t *ppos)
 216 {
 217         struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
 218         char *page, *start = NULL;
 219         int rc = 0, eof = 1, count;
 220
 221         if (*ppos >= PAGE_CACHE_SIZE)
 222                 return 0;
 223
 224         page = (char *)__get_free_page(GFP_KERNEL);
 225         if (page == NULL)
 226                 return -ENOMEM;
 227
 228         if (LPROCFS_ENTRY_CHECK(dp)) {
 229                 rc = -ENOENT;
 230                 goto out;
 231         }
 232
 233         OBD_FAIL_TIMEOUT(OBD_FAIL_LPROC_REMOVE, 10);
 234         if (dp->read_proc)
 235                 rc = dp->read_proc(page, &start, *ppos, PAGE_CACHE_SIZE,
 236                                    &eof, dp->data);
 237         if (rc <= 0)
 238                 goto out;
 239
 240         /* for lustre proc read, the read count must be less than PAGE_SIZE */
 241         LASSERT(eof == 1);
 242
 243         if (start == NULL) {
 244                 rc -= *ppos;
 245                 if (rc < 0)
 246                         rc = 0;
 247                 if (rc == 0)
 248                         goto out;
 249                 start = page + *ppos;
 250         } else if (start < page) {
 251                 start = page;
 252         }
 253
 254         count = (rc < size) ? rc : size;
 255         if (copy_to_user(buf, start, count)) {
 256                 rc = -EFAULT;
 257                 goto out;
 258         }
 259         *ppos += count;
 260
 261 out:
 262         free_page((unsigned long)page);
 263         return rc;
 264 }
 265
 266 static ssize_t lprocfs_fops_write(struct file *f, const char __user *buf,
 267                                   size_t size, loff_t *ppos)
 268 {
 269         struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
 270         int rc = -EIO;
 271
 272         if (LPROCFS_ENTRY_CHECK(dp))
 273                 return -ENOENT;
 274         if (dp->write_proc)
 275                 rc = dp->write_proc(f, buf, size, dp->data);
 276         return rc;
 277 }
 278
 279 static struct file_operations lprocfs_generic_fops = {
 280         .owner = THIS_MODULE,
 281         .read = lprocfs_fops_read,
 282         .write = lprocfs_fops_write,
 283 };
 284 #else
 285 static struct file_operations lprocfs_generic_fops = { };
 286 #endif
 287
 288 #ifdef HAVE_SERVER_SUPPORT
 289 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
 290 {
 291         struct obd_device *obd = PDE_DATA(f->f_dentry->d_inode);
 292
 293         atomic_inc(&obd->obd_evict_inprogress);
 294         return 0;
 295 }
 296
 297 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
 298 {
 299         struct obd_device *obd = PDE_DATA(f->f_dentry->d_inode);
 300
 301         atomic_dec(&obd->obd_evict_inprogress);
 302         wake_up(&obd->obd_evict_inprogress_waitq);
 303
 304         return 0;
 305 }
 306
 307 #define BUFLEN (UUID_MAX + 5)
 308
 309 #ifndef HAVE_ONLY_PROCFS_SEQ
 310 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 311                             unsigned long count, void *data)
 312 {
 313         struct obd_device *obd = data;
 314         char              *kbuf;
 315         char              *tmpbuf;
 316
 317         OBD_ALLOC(kbuf, BUFLEN);
 318         if (kbuf == NULL)
 319                 return -ENOMEM;
 320
 321         /*
 322          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
 323          * bytes into kbuf, to ensure that the string is NUL-terminated.
 324          * UUID_MAX should include a trailing NUL already.
 325          */
 326         if (copy_from_user(kbuf, buffer,
 327                            min_t(unsigned long, BUFLEN - 1, count))) {
 328                 count = -EFAULT;
 329                 goto out;
 330         }
 331         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
 332         class_incref(obd, __FUNCTION__, current);
 333
 334         if (strncmp(tmpbuf, "nid:", 4) == 0)
 335                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 336         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 337                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 338         else
 339                 obd_export_evict_by_uuid(obd, tmpbuf);
 340
 341         class_decref(obd, __FUNCTION__, current);
 342 out:
 343         OBD_FREE(kbuf, BUFLEN);
 344         return count;
 345 }
 346 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 347 #endif
 348
 349 ssize_t
 350 lprocfs_evict_client_seq_write(struct file *file, const char *buffer,
 351                                size_t count, loff_t *off)
 352 {
 353         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 354         char *tmpbuf, *kbuf;
 355
 356         OBD_ALLOC(kbuf, BUFLEN);
 357         if (kbuf == NULL)
 358                 return -ENOMEM;
 359
 360         /*
 361          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
 362          * bytes into kbuf, to ensure that the string is NUL-terminated.
 363          * UUID_MAX should include a trailing NUL already.
 364          */
 365         if (copy_from_user(kbuf, buffer,
 366                            min_t(unsigned long, BUFLEN - 1, count))) {
 367                 count = -EFAULT;
 368                 goto out;
 369         }
 370         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
 371         class_incref(obd, __FUNCTION__, current);
 372
 373         if (strncmp(tmpbuf, "nid:", 4) == 0)
 374                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 375         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 376                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 377         else
 378                 obd_export_evict_by_uuid(obd, tmpbuf);
 379
 380         class_decref(obd, __FUNCTION__, current);
 381
 382 out:
 383         OBD_FREE(kbuf, BUFLEN);
 384         return count;
 385 }
 386 EXPORT_SYMBOL(lprocfs_evict_client_seq_write);
 387
 388 #undef BUFLEN
 389
 390 struct file_operations lprocfs_evict_client_fops = {
 391         .owner = THIS_MODULE,
 392         .read = lprocfs_fops_read,
 393         .write = lprocfs_fops_write,
 394         .open = lprocfs_evict_client_open,
 395         .release = lprocfs_evict_client_release,
 396 };
 397 EXPORT_SYMBOL(lprocfs_evict_client_fops);
 398 #endif
 399
 400 #ifndef HAVE_ONLY_PROCFS_SEQ
 401 static int __lprocfs_add_vars(struct proc_dir_entry *root,
 402                               struct lprocfs_vars *list,
 403                               void *data)
 404 {
 405         int rc = 0;
 406
 407         if (root == NULL || list == NULL)
 408                 return -EINVAL;
 409
 410         while (list->name != NULL) {
 411                 struct proc_dir_entry *cur_root, *proc;
 412                 char *pathcopy, *cur, *next, pathbuf[64];
 413                 int pathsize = strlen(list->name) + 1;
 414
 415                 proc = NULL;
 416                 cur_root = root;
 417
 418                 /* need copy of path for strsep */
 419                 if (strlen(list->name) > sizeof(pathbuf) - 1) {
 420                         OBD_ALLOC(pathcopy, pathsize);
 421                         if (pathcopy == NULL)
 422                                 GOTO(out, rc = -ENOMEM);
 423                 } else {
 424                         pathcopy = pathbuf;
 425                 }
 426
 427                 next = pathcopy;
 428                 strcpy(pathcopy, list->name);
 429
 430                 while (cur_root != NULL && (cur = strsep(&next, "/"))) {
 431                         if (*cur =='\0') /* skip double/trailing "/" */
 432                                 continue;
 433
 434                         proc = __lprocfs_srch(cur_root, cur);
 435                         CDEBUG(D_OTHER, "cur_root=%s, cur=%s, next=%s, (%s)\n",
 436                                cur_root->name, cur, next,
 437                                (proc ? "exists" : "new"));
 438                         if (next != NULL) {
 439                                 cur_root = (proc ? proc :
 440                                             proc_mkdir(cur, cur_root));
 441                         } else if (proc == NULL) {
 442                                 mode_t mode = 0;
 443                                 if (list->proc_mode != 0000) {
 444                                         mode = list->proc_mode;
 445                                 } else {
 446                                         if (list->read_fptr)
 447                                                 mode = 0444;
 448                                         if (list->write_fptr)
 449                                                 mode |= 0200;
 450                                 }
 451                                 proc = create_proc_entry(cur, mode, cur_root);
 452                         }
 453                 }
 454
 455                 if (pathcopy != pathbuf)
 456                         OBD_FREE(pathcopy, pathsize);
 457
 458                 if (cur_root == NULL || proc == NULL) {
 459                         CERROR("LprocFS: No memory to create /proc entry %s",
 460                                list->name);
 461                         GOTO(out, rc = -ENOMEM);
 462                 }
 463
 464                 if (list->fops)
 465                         proc->proc_fops = list->fops;
 466                 else
 467                         proc->proc_fops = &lprocfs_generic_fops;
 468                 proc->read_proc = list->read_fptr;
 469                 proc->write_proc = list->write_fptr;
 470                 proc->data = (list->data ? list->data : data);
 471                 list++;
 472         }
 473 out:
 474         return rc;
 475 }
 476
 477 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
 478                      void *data)
 479 {
 480         int rc = 0;
 481
 482         LPROCFS_WRITE_ENTRY();
 483         rc = __lprocfs_add_vars(root, list, data);
 484         LPROCFS_WRITE_EXIT();
 485
 486         return rc;
 487 }
 488 EXPORT_SYMBOL(lprocfs_add_vars);
 489
 490 #endif
 491
 492 /**
 493  * Add /proc entries.
 494  *
 495  * \param root [in]  The parent proc entry on which new entry will be added.
 496  * \param list [in]  Array of proc entries to be added.
 497  * \param data [in]  The argument to be passed when entries read/write routines
 498  *                   are called through /proc file.
 499  *
 500  * \retval 0   on success
 501  *         < 0 on error
 502  */
 503 int
 504 lprocfs_seq_add_vars(struct proc_dir_entry *root, struct lprocfs_seq_vars *list,
 505                      void *data)
 506 {
 507         if (root == NULL || list == NULL)
 508                 return -EINVAL;
 509
 510         while (list->name != NULL) {
 511                 struct proc_dir_entry *proc;
 512                 mode_t mode = 0;
 513
 514                 if (list->proc_mode != 0000) {
 515                         mode = list->proc_mode;
 516                 } else if (list->fops) {
 517                         if (list->fops->read)
 518                                 mode = 0444;
 519                         if (list->fops->write)
 520                                 mode |= 0200;
 521                 }
 522                 proc = proc_create_data(list->name, mode, root,
 523                                         list->fops ?: &lprocfs_generic_fops,
 524                                         list->data ?: data);
 525                 if (proc == NULL)
 526                         return -ENOMEM;
 527                 list++;
 528         }
 529         return 0;
 530 }
 531 EXPORT_SYMBOL(lprocfs_seq_add_vars);
 532
 533 #ifndef HAVE_ONLY_PROCFS_SEQ
 534 void lprocfs_remove_nolock(struct proc_dir_entry **proot)
 535 {
 536         struct proc_dir_entry *root = *proot;
 537         struct proc_dir_entry *temp = root;
 538         struct proc_dir_entry *rm_entry;
 539         struct proc_dir_entry *parent;
 540
 541         *proot = NULL;
 542         if (root == NULL || IS_ERR(root))
 543                 return;
 544
 545         parent = root->parent;
 546         LASSERT(parent != NULL);
 547
 548         while (1) {
 549                 while (temp->subdir != NULL)
 550                         temp = temp->subdir;
 551
 552                 rm_entry = temp;
 553                 temp = temp->parent;
 554
 555                 /* Memory corruption once caused this to fail, and
 556                    without this LASSERT we would loop here forever. */
 557                 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
 558                          "0x%p  %s/%s len %d\n", rm_entry, temp->name,
 559                          rm_entry->name, (int)strlen(rm_entry->name));
 560
 561                 remove_proc_entry(rm_entry->name, temp);
 562                 if (temp == parent)
 563                         break;
 564         }
 565 }
 566 #endif
 567
 568 void lprocfs_remove(struct proc_dir_entry **rooth)
 569 {
 570 #ifndef HAVE_ONLY_PROCFS_SEQ
 571         LPROCFS_WRITE_ENTRY(); /* search vs remove race */
 572         lprocfs_remove_nolock(rooth);
 573         LPROCFS_WRITE_EXIT();
 574 #else
 575         proc_remove(*rooth);
 576         *rooth = NULL;
 577 #endif
 578 }
 579 EXPORT_SYMBOL(lprocfs_remove);
 580
 581 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
 582 {
 583         LASSERT(parent != NULL);
 584         remove_proc_entry(name, parent);
 585 }
 586 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
 587
 588 #ifndef HAVE_ONLY_PROCFS_SEQ
 589 void lprocfs_try_remove_proc_entry(const char *name,
 590                                    struct proc_dir_entry *parent)
 591 {
 592         struct proc_dir_entry    *t = NULL;
 593         struct proc_dir_entry   **p;
 594         int                       len, busy = 0;
 595
 596         LASSERT(parent != NULL);
 597         len = strlen(name);
 598
 599         LPROCFS_WRITE_ENTRY();
 600
 601         /* lookup target name */
 602         for (p = &parent->subdir; *p; p = &(*p)->next) {
 603                 if ((*p)->namelen != len)
 604                         continue;
 605                 if (memcmp(name, (*p)->name, len))
 606                         continue;
 607                 t = *p;
 608                 break;
 609         }
 610
 611         if (t) {
 612                 /* verify it's empty: do not count "num_refs" */
 613                 for (p = &t->subdir; *p; p = &(*p)->next) {
 614                         if ((*p)->namelen != strlen("num_refs")) {
 615                                 busy = 1;
 616                                 break;
 617                         }
 618                         if (memcmp("num_refs", (*p)->name,
 619                                    strlen("num_refs"))) {
 620                                 busy = 1;
 621                                 break;
 622                         }
 623                 }
 624         }
 625
 626         if (busy == 0)
 627                 lprocfs_remove_nolock(&t);
 628
 629         LPROCFS_WRITE_EXIT();
 630
 631         return;
 632 }
 633 EXPORT_SYMBOL(lprocfs_try_remove_proc_entry);
 634
 635 struct proc_dir_entry *lprocfs_register(const char *name,
 636                                         struct proc_dir_entry *parent,
 637                                         struct lprocfs_vars *list, void *data)
 638 {
 639         struct proc_dir_entry *entry;
 640         int rc;
 641
 642         LPROCFS_WRITE_ENTRY();
 643         entry = __lprocfs_srch(parent, name);
 644         if (entry != NULL) {
 645                 CERROR("entry '%s' already registered\n", name);
 646                 GOTO(out, entry = ERR_PTR(-EALREADY));
 647         }
 648
 649         entry = proc_mkdir(name, parent);
 650         if (entry == NULL)
 651                 GOTO(out, entry = ERR_PTR(-ENOMEM));
 652
 653         if (list != NULL) {
 654                 rc = __lprocfs_add_vars(entry, list, data);
 655                 if (rc != 0) {
 656                         lprocfs_remove_nolock(&entry);
 657                         GOTO(out, entry = ERR_PTR(rc));
 658                 }
 659         }
 660 out:
 661         LPROCFS_WRITE_EXIT();
 662         return entry;
 663 }
 664 EXPORT_SYMBOL(lprocfs_register);
 665 #endif
 666
 667 struct proc_dir_entry *
 668 lprocfs_seq_register(const char *name, struct proc_dir_entry *parent,
 669                      struct lprocfs_seq_vars *list, void *data)
 670 {
 671         struct proc_dir_entry *newchild;
 672
 673         newchild = proc_mkdir(name, parent);
 674         if (newchild != NULL && list != NULL) {
 675                 int rc = lprocfs_seq_add_vars(newchild, list, data);
 676                 if (rc) {
 677                         lprocfs_remove(&newchild);
 678                         return ERR_PTR(rc);
 679                 }
 680         }
 681         return newchild;
 682 }
 683 EXPORT_SYMBOL(lprocfs_seq_register);
 684
 685 /* Generic callbacks */
 686 int lprocfs_uint_seq_show(struct seq_file *m, void *data)
 687 {
 688         return seq_printf(m, "%u\n", *(unsigned int *)data);
 689 }
 690 EXPORT_SYMBOL(lprocfs_uint_seq_show);
 691
 692 int lprocfs_wr_uint(struct file *file, const char *buffer,
 693                     unsigned long count, void *data)
 694 {
 695         unsigned *p = data;
 696         char dummy[MAX_STRING_SIZE + 1], *end;
 697         unsigned long tmp;
 698
 699         dummy[MAX_STRING_SIZE] = '\0';
 700         if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
 701                 return -EFAULT;
 702
 703         tmp = simple_strtoul(dummy, &end, 0);
 704         if (dummy == end)
 705                 return -EINVAL;
 706
 707         *p = (unsigned int)tmp;
 708         return count;
 709 }
 710 EXPORT_SYMBOL(lprocfs_wr_uint);
 711
 712 ssize_t lprocfs_uint_seq_write(struct file *file, const char *buffer,
 713                                size_t count, loff_t *off)
 714 {
 715         int *data = ((struct seq_file *)file->private_data)->private;
 716         int val = 0, rc;
 717
 718         rc = lprocfs_write_helper(buffer, count, &val);
 719         if (rc < 0)
 720                 return rc;
 721
 722         return lprocfs_wr_uint(file, buffer, count, data);
 723 }
 724 EXPORT_SYMBOL(lprocfs_uint_seq_write);
 725
 726 int lprocfs_u64_seq_show(struct seq_file *m, void *data)
 727 {
 728         LASSERT(data != NULL);
 729         return seq_printf(m, LPU64"\n", *(__u64 *)data);
 730 }
 731 EXPORT_SYMBOL(lprocfs_u64_seq_show);
 732
 733 int lprocfs_atomic_seq_show(struct seq_file *m, void *data)
 734 {
 735         atomic_t *atom = data;
 736         LASSERT(atom != NULL);
 737         return seq_printf(m, "%d\n", atomic_read(atom));
 738 }
 739 EXPORT_SYMBOL(lprocfs_atomic_seq_show);
 740
 741 ssize_t
 742 lprocfs_atomic_seq_write(struct file *file, const char *buffer,
 743                         size_t count, loff_t *off)
 744 {
 745         atomic_t *atm = ((struct seq_file *)file->private_data)->private;
 746         int val = 0;
 747         int rc;
 748
 749         rc = lprocfs_write_helper(buffer, count, &val);
 750         if (rc < 0)
 751                 return rc;
 752
 753         if (val <= 0)
 754                 return -ERANGE;
 755
 756         atomic_set(atm, val);
 757         return count;
 758 }
 759 EXPORT_SYMBOL(lprocfs_atomic_seq_write);
 760
 761 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
 762 {
 763         struct obd_device *obd = data;
 764
 765         LASSERT(obd != NULL);
 766         return seq_printf(m, "%s\n", obd->obd_uuid.uuid);
 767 }
 768 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
 769
 770 int lprocfs_name_seq_show(struct seq_file *m, void *data)
 771 {
 772         struct obd_device *dev = data;
 773
 774         LASSERT(dev != NULL);
 775         return seq_printf(m, "%s\n", dev->obd_name);
 776 }
 777 EXPORT_SYMBOL(lprocfs_name_seq_show);
 778
 779 int lprocfs_blksize_seq_show(struct seq_file *m, void *data)
 780 {
 781         struct obd_device *obd = data;
 782         struct obd_statfs  osfs;
 783         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 784                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 785                             OBD_STATFS_NODELAY);
 786         if (!rc)
 787                 rc = seq_printf(m, "%u\n", osfs.os_bsize);
 788         return rc;
 789 }
 790 EXPORT_SYMBOL(lprocfs_blksize_seq_show);
 791
 792 int lprocfs_kbytestotal_seq_show(struct seq_file *m, void *data)
 793 {
 794         struct obd_device *obd = data;
 795         struct obd_statfs  osfs;
 796         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 797                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 798                             OBD_STATFS_NODELAY);
 799         if (!rc) {
 800                 __u32 blk_size = osfs.os_bsize >> 10;
 801                 __u64 result = osfs.os_blocks;
 802
 803                 while (blk_size >>= 1)
 804                         result <<= 1;
 805
 806                 rc = seq_printf(m, LPU64"\n", result);
 807         }
 808         return rc;
 809 }
 810 EXPORT_SYMBOL(lprocfs_kbytestotal_seq_show);
 811
 812 int lprocfs_kbytesfree_seq_show(struct seq_file *m, void *data)
 813 {
 814         struct obd_device *obd = data;
 815         struct obd_statfs  osfs;
 816         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 817                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 818                             OBD_STATFS_NODELAY);
 819         if (!rc) {
 820                 __u32 blk_size = osfs.os_bsize >> 10;
 821                 __u64 result = osfs.os_bfree;
 822
 823                 while (blk_size >>= 1)
 824                         result <<= 1;
 825
 826                 rc = seq_printf(m, LPU64"\n", result);
 827         }
 828         return rc;
 829 }
 830 EXPORT_SYMBOL(lprocfs_kbytesfree_seq_show);
 831
 832 int lprocfs_kbytesavail_seq_show(struct seq_file *m, void *data)
 833 {
 834         struct obd_device *obd = data;
 835         struct obd_statfs  osfs;
 836         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 837                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 838                             OBD_STATFS_NODELAY);
 839         if (!rc) {
 840                 __u32 blk_size = osfs.os_bsize >> 10;
 841                 __u64 result = osfs.os_bavail;
 842
 843                 while (blk_size >>= 1)
 844                         result <<= 1;
 845
 846                 rc = seq_printf(m, LPU64"\n", result);
 847         }
 848         return rc;
 849 }
 850 EXPORT_SYMBOL(lprocfs_kbytesavail_seq_show);
 851
 852 int lprocfs_filestotal_seq_show(struct seq_file *m, void *data)
 853 {
 854         struct obd_device *obd = data;
 855         struct obd_statfs  osfs;
 856         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 857                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 858                             OBD_STATFS_NODELAY);
 859         if (!rc)
 860                 rc = seq_printf(m, LPU64"\n", osfs.os_files);
 861         return rc;
 862 }
 863 EXPORT_SYMBOL(lprocfs_filestotal_seq_show);
 864
 865 int lprocfs_filesfree_seq_show(struct seq_file *m, void *data)
 866 {
 867         struct obd_device *obd = data;
 868         struct obd_statfs  osfs;
 869         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
 870                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 871                             OBD_STATFS_NODELAY);
 872         if (!rc)
 873                 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
 874         return rc;
 875 }
 876 EXPORT_SYMBOL(lprocfs_filesfree_seq_show);
 877
 878 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
 879 {
 880         struct obd_device *obd = data;
 881         struct obd_import *imp;
 882         char *imp_state_name = NULL;
 883         int rc = 0;
 884
 885         LASSERT(obd != NULL);
 886         LPROCFS_CLIMP_CHECK(obd);
 887         imp = obd->u.cli.cl_import;
 888         imp_state_name = ptlrpc_import_state_name(imp->imp_state);
 889         rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
 890                         imp->imp_deactive ? "\tDEACTIVATED" : "");
 891
 892         LPROCFS_CLIMP_EXIT(obd);
 893         return rc;
 894 }
 895 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
 896
 897 int lprocfs_conn_uuid_seq_show(struct seq_file *m, void *data)
 898 {
 899         struct obd_device *obd = data;
 900         struct ptlrpc_connection *conn;
 901         int rc = 0;
 902
 903         LASSERT(obd != NULL);
 904
 905         LPROCFS_CLIMP_CHECK(obd);
 906         conn = obd->u.cli.cl_import->imp_connection;
 907         if (conn && obd->u.cli.cl_import)
 908                 rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
 909         else
 910                 rc = seq_printf(m, "%s\n", "<none>");
 911
 912         LPROCFS_CLIMP_EXIT(obd);
 913         return rc;
 914 }
 915 EXPORT_SYMBOL(lprocfs_conn_uuid_seq_show);
 916
 917 /** add up per-cpu counters */
 918 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
 919                            struct lprocfs_counter *cnt)
 920 {
 921         unsigned int                    num_entry;
 922         struct lprocfs_counter          *percpu_cntr;
 923         int                             i;
 924         unsigned long                   flags = 0;
 925
 926         memset(cnt, 0, sizeof(*cnt));
 927
 928         if (stats == NULL) {
 929                 /* set count to 1 to avoid divide-by-zero errs in callers */
 930                 cnt->lc_count = 1;
 931                 return;
 932         }
 933
 934         cnt->lc_min = LC_MIN_INIT;
 935
 936         num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
 937
 938         for (i = 0; i < num_entry; i++) {
 939                 if (stats->ls_percpu[i] == NULL)
 940                         continue;
 941                 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
 942
 943                 cnt->lc_count += percpu_cntr->lc_count;
 944                 cnt->lc_sum += percpu_cntr->lc_sum;
 945                 if (percpu_cntr->lc_min < cnt->lc_min)
 946                         cnt->lc_min = percpu_cntr->lc_min;
 947                 if (percpu_cntr->lc_max > cnt->lc_max)
 948                         cnt->lc_max = percpu_cntr->lc_max;
 949                 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
 950         }
 951
 952         lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
 953 }
 954 EXPORT_SYMBOL(lprocfs_stats_collect);
 955
 956 /**
 957  * Append a space separated list of current set flags to str.
 958  */
 959 #define flag2seqstr(flag)                                               \
 960         do {                                                            \
 961                 if (imp->imp_##flag)                                    \
 962                         seq_printf(m, "%s" #flag, first ? "" : ", ");   \
 963         } while (0)
 964 static int obd_import_flags2seqstr(struct obd_import *imp, struct seq_file *m)
 965 {
 966         bool first = true;
 967
 968         if (imp->imp_obd->obd_no_recov) {
 969                 seq_printf(m, "no_recov");
 970                 first = false;
 971         }
 972
 973         flag2seqstr(invalid);
 974         flag2seqstr(deactive);
 975         flag2seqstr(replayable);
 976         flag2seqstr(pingable);
 977         return 0;
 978 }
 979 #undef flags2seqstr
 980
 981 static const char *obd_connect_names[] = {
 982         "read_only",
 983         "lov_index",
 984         "connect_from_mds",
 985         "write_grant",
 986         "server_lock",
 987         "version",
 988         "request_portal",
 989         "acl",
 990         "xattr",
 991         "create_on_write",
 992         "truncate_lock",
 993         "initial_transno",
 994         "inode_bit_locks",
 995         "join_file(obsolete)",
 996         "getattr_by_fid",
 997         "no_oh_for_devices",
 998         "remote_client",
 999         "remote_client_by_force",
1000         "max_byte_per_rpc",
1001         "64bit_qdata",
1002         "mds_capability",
1003         "oss_capability",
1004         "early_lock_cancel",
1005         "som",
1006         "adaptive_timeouts",
1007         "lru_resize",
1008         "mds_mds_connection",
1009         "real_conn",
1010         "change_qunit_size",
1011         "alt_checksum_algorithm",
1012         "fid_is_enabled",
1013         "version_recovery",
1014         "pools",
1015         "grant_shrink",
1016         "skip_orphan",
1017         "large_ea",
1018         "full20",
1019         "layout_lock",
1020         "64bithash",
1021         "object_max_bytes",
1022         "imp_recov",
1023         "jobstats",
1024         "umask",
1025         "einprogress",
1026         "grant_param",
1027         "flock_owner",
1028         "lvb_type",
1029         "nanoseconds_times",
1030         "lightweight_conn",
1031         "short_io",
1032         "pingless",
1033         "flock_deadlock",
1034         "disp_stripe",
1035         "unknown",
1036         NULL
1037 };
1038
1039 static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
1040 {
1041         bool first = true;
1042         __u64 mask = 1;
1043         int i;
1044
1045         for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
1046                 if (flags & mask) {
1047                         seq_printf(m, "%s%s",
1048                                    first ? "" : sep, obd_connect_names[i]);
1049                         first = false;
1050                 }
1051         }
1052         if (flags & ~(mask - 1))
1053                 seq_printf(m, "%sunknown flags "LPX64,
1054                            first ? "" : sep, flags & ~(mask - 1));
1055 }
1056
1057 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
1058 {
1059         __u64 mask = 1;
1060         int i, ret = 0;
1061
1062         for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
1063                 if (flags & mask)
1064                         ret += snprintf(page + ret, count - ret, "%s%s",
1065                                         ret ? sep : "", obd_connect_names[i]);
1066         }
1067         if (flags & ~(mask - 1))
1068                 ret += snprintf(page + ret, count - ret,
1069                                 "%sunknown flags "LPX64,
1070                                 ret ? sep : "", flags & ~(mask - 1));
1071         return ret;
1072 }
1073 EXPORT_SYMBOL(obd_connect_flags2str);
1074
1075 static void obd_connect_data_seqprint(struct seq_file *m,
1076                                       struct obd_connect_data *ocd)
1077 {
1078         int flags;
1079
1080         LASSERT(ocd != NULL);
1081         flags = ocd->ocd_connect_flags;
1082
1083         seq_printf(m, "    connect_data:\n"
1084                       "       flags: "LPX64"\n"
1085                       "       instance: %u\n",
1086                       ocd->ocd_connect_flags,
1087                       ocd->ocd_instance);
1088         if (flags & OBD_CONNECT_VERSION)
1089                 seq_printf(m, "       target_version: %u.%u.%u.%u\n",
1090                               OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
1091                               OBD_OCD_VERSION_MINOR(ocd->ocd_version),
1092                               OBD_OCD_VERSION_PATCH(ocd->ocd_version),
1093                               OBD_OCD_VERSION_FIX(ocd->ocd_version));
1094         if (flags & OBD_CONNECT_MDS)
1095                 seq_printf(m, "       mdt_index: %d\n", ocd->ocd_group);
1096         if (flags & OBD_CONNECT_GRANT)
1097                 seq_printf(m, "       initial_grant: %d\n", ocd->ocd_grant);
1098         if (flags & OBD_CONNECT_INDEX)
1099                 seq_printf(m, "       target_index: %u\n", ocd->ocd_index);
1100         if (flags & OBD_CONNECT_BRW_SIZE)
1101                 seq_printf(m, "       max_brw_size: %d\n", ocd->ocd_brw_size);
1102         if (flags & OBD_CONNECT_IBITS)
1103                 seq_printf(m, "       ibits_known: "LPX64"\n",
1104                                 ocd->ocd_ibits_known);
1105         if (flags & OBD_CONNECT_GRANT_PARAM)
1106                 seq_printf(m, "       grant_block_size: %d\n"
1107                               "       grant_inode_size: %d\n"
1108                               "       grant_extent_overhead: %d\n",
1109                               ocd->ocd_blocksize,
1110                               ocd->ocd_inodespace,
1111                               ocd->ocd_grant_extent);
1112         if (flags & OBD_CONNECT_TRANSNO)
1113                 seq_printf(m, "       first_transno: "LPX64"\n",
1114                                 ocd->ocd_transno);
1115         if (flags & OBD_CONNECT_CKSUM)
1116                 seq_printf(m, "       cksum_types: %#x\n",
1117                               ocd->ocd_cksum_types);
1118         if (flags & OBD_CONNECT_MAX_EASIZE)
1119                 seq_printf(m, "       max_easize: %d\n", ocd->ocd_max_easize);
1120         if (flags & OBD_CONNECT_MAXBYTES)
1121                 seq_printf(m, "       max_object_bytes: "LPU64"\n",
1122                               ocd->ocd_maxbytes);
1123 }
1124
1125 int lprocfs_import_seq_show(struct seq_file *m, void *data)
1126 {
1127         struct lprocfs_counter          ret;
1128         struct lprocfs_counter_header   *header;
1129         struct obd_device               *obd    = (struct obd_device *)data;
1130         struct obd_import               *imp;
1131         struct obd_import_conn          *conn;
1132         struct obd_connect_data         *ocd;
1133         int                             j;
1134         int                             k;
1135         int                             rw      = 0;
1136
1137         LASSERT(obd != NULL);
1138         LPROCFS_CLIMP_CHECK(obd);
1139         imp = obd->u.cli.cl_import;
1140         ocd = &imp->imp_connect_data;
1141
1142         seq_printf(m, "import:\n"
1143                       "    name: %s\n"
1144                       "    target: %s\n"
1145                       "    state: %s\n"
1146                       "    connect_flags: [",
1147                       obd->obd_name,
1148                       obd2cli_tgt(obd),
1149                       ptlrpc_import_state_name(imp->imp_state));
1150         obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
1151                                         ", ");
1152         seq_printf(m, "]\n");
1153         obd_connect_data_seqprint(m, ocd);
1154         seq_printf(m, "    import_flags: [");
1155         obd_import_flags2seqstr(imp, m);
1156
1157         seq_printf(m, "]\n"
1158                       "    connection:\n"
1159                       "       failover_nids: [");
1160         spin_lock(&imp->imp_lock);
1161         j = 0;
1162         list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
1163                 seq_printf(m, "%s%s", j ? ", " : "",
1164                            libcfs_nid2str(conn->oic_conn->c_peer.nid));
1165                 j++;
1166         }
1167         seq_printf(m, "]\n"
1168                       "       current_connection: %s\n"
1169                       "       connection_attempts: %u\n"
1170                       "       generation: %u\n"
1171                       "       in-progress_invalidations: %u\n",
1172                       imp->imp_connection == NULL ? "<none>" :
1173                               libcfs_nid2str(imp->imp_connection->c_peer.nid),
1174                       imp->imp_conn_cnt,
1175                       imp->imp_generation,
1176                       atomic_read(&imp->imp_inval_count));
1177         spin_unlock(&imp->imp_lock);
1178
1179         if (obd->obd_svc_stats == NULL)
1180                 goto out_climp;
1181
1182         header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
1183         lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
1184         if (ret.lc_count != 0) {
1185                 /* first argument to do_div MUST be __u64 */
1186                 __u64 sum = ret.lc_sum;
1187                 do_div(sum, ret.lc_count);
1188                 ret.lc_sum = sum;
1189         } else
1190                 ret.lc_sum = 0;
1191         seq_printf(m, "    rpcs:\n"
1192                       "       inflight: %u\n"
1193                       "       unregistering: %u\n"
1194                       "       timeouts: %u\n"
1195                       "       avg_waittime: "LPU64" %s\n",
1196                       atomic_read(&imp->imp_inflight),
1197                       atomic_read(&imp->imp_unregistering),
1198                       atomic_read(&imp->imp_timeouts),
1199                       ret.lc_sum, header->lc_units);
1200
1201         k = 0;
1202         for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1203                 if (imp->imp_at.iat_portal[j] == 0)
1204                         break;
1205                 k = max_t(unsigned int, k,
1206                           at_get(&imp->imp_at.iat_service_estimate[j]));
1207         }
1208         seq_printf(m, "    service_estimates:\n"
1209                       "       services: %u sec\n"
1210                       "       network: %u sec\n",
1211                       k,
1212                       at_get(&imp->imp_at.iat_net_latency));
1213
1214         seq_printf(m, "    transactions:\n"
1215                       "       last_replay: "LPU64"\n"
1216                       "       peer_committed: "LPU64"\n"
1217                       "       last_checked: "LPU64"\n",
1218                       imp->imp_last_replay_transno,
1219                       imp->imp_peer_committed_transno,
1220                       imp->imp_last_transno_checked);
1221
1222         /* avg data rates */
1223         for (rw = 0; rw <= 1; rw++) {
1224                 lprocfs_stats_collect(obd->obd_svc_stats,
1225                                       PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1226                                       &ret);
1227                 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1228                         /* first argument to do_div MUST be __u64 */
1229                         __u64 sum = ret.lc_sum;
1230                         do_div(sum, ret.lc_count);
1231                         ret.lc_sum = sum;
1232                         seq_printf(m, "    %s_data_averages:\n"
1233                                       "       bytes_per_rpc: "LPU64"\n",
1234                                       rw ? "write" : "read",
1235                                       ret.lc_sum);
1236                 }
1237                 k = (int)ret.lc_sum;
1238                 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1239                 header = &obd->obd_svc_stats->ls_cnt_header[j];
1240                 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1241                 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1242                         /* first argument to do_div MUST be __u64 */
1243                         __u64 sum = ret.lc_sum;
1244                         do_div(sum, ret.lc_count);
1245                         ret.lc_sum = sum;
1246                         seq_printf(m, "       %s_per_rpc: "LPU64"\n",
1247                                         header->lc_units, ret.lc_sum);
1248                         j = (int)ret.lc_sum;
1249                         if (j > 0)
1250                                 seq_printf(m, "       MB_per_sec: %u.%.02u\n",
1251                                                 k / j, (100 * k / j) % 100);
1252                 }
1253         }
1254
1255 out_climp:
1256         LPROCFS_CLIMP_EXIT(obd);
1257         return 0;
1258 }
1259 EXPORT_SYMBOL(lprocfs_import_seq_show);
1260
1261 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1262 {
1263         struct obd_device *obd = (struct obd_device *)data;
1264         struct obd_import *imp;
1265         int j, k;
1266
1267         LASSERT(obd != NULL);
1268         LPROCFS_CLIMP_CHECK(obd);
1269         imp = obd->u.cli.cl_import;
1270
1271         seq_printf(m, "current_state: %s\n",
1272                    ptlrpc_import_state_name(imp->imp_state));
1273         seq_printf(m, "state_history:\n");
1274         k = imp->imp_state_hist_idx;
1275         for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1276                 struct import_state_hist *ish =
1277                         &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1278                 if (ish->ish_state == 0)
1279                         continue;
1280                 seq_printf(m, " - ["CFS_TIME_T", %s]\n",
1281                            ish->ish_time,
1282                 ptlrpc_import_state_name(ish->ish_state));
1283         }
1284
1285         LPROCFS_CLIMP_EXIT(obd);
1286         return 0;
1287 }
1288 EXPORT_SYMBOL(lprocfs_state_seq_show);
1289
1290 int lprocfs_seq_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1291 {
1292         int i;
1293         for (i = 0; i < AT_BINS; i++)
1294                 seq_printf(m, "%3u ", at->at_hist[i]);
1295         seq_printf(m, "\n");
1296         return 0;
1297 }
1298 EXPORT_SYMBOL(lprocfs_seq_at_hist_helper);
1299
1300 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1301 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1302 {
1303         struct obd_device *obd = (struct obd_device *)data;
1304         struct obd_import *imp;
1305         unsigned int cur, worst;
1306         time_t now, worstt;
1307         struct dhms ts;
1308         int i;
1309
1310         LASSERT(obd != NULL);
1311         LPROCFS_CLIMP_CHECK(obd);
1312         imp = obd->u.cli.cl_import;
1313
1314         now = cfs_time_current_sec();
1315
1316         /* Some network health info for kicks */
1317         s2dhms(&ts, now - imp->imp_last_reply_time);
1318         seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
1319                    "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
1320
1321         cur = at_get(&imp->imp_at.iat_net_latency);
1322         worst = imp->imp_at.iat_net_latency.at_worst_ever;
1323         worstt = imp->imp_at.iat_net_latency.at_worst_time;
1324         s2dhms(&ts, now - worstt);
1325         seq_printf(m, "%-10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
1326                    "network", cur, worst, worstt, DHMS_VARS(&ts));
1327         lprocfs_seq_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1328
1329         for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1330                 if (imp->imp_at.iat_portal[i] == 0)
1331                         break;
1332                 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1333                 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1334                 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1335                 s2dhms(&ts, now - worstt);
1336                 seq_printf(m, "portal %-2d  : cur %3u  worst %3u (at %ld, "
1337                            DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
1338                            cur, worst, worstt, DHMS_VARS(&ts));
1339                 lprocfs_seq_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1340         }
1341
1342         LPROCFS_CLIMP_EXIT(obd);
1343         return 0;
1344 }
1345 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1346
1347 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1348 {
1349         struct obd_device *obd = data;
1350         __u64 flags;
1351
1352         LPROCFS_CLIMP_CHECK(obd);
1353         flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1354         seq_printf(m, "flags="LPX64"\n", flags);
1355         obd_connect_seq_flags2str(m, flags, "\n");
1356         seq_printf(m, "\n");
1357         LPROCFS_CLIMP_EXIT(obd);
1358         return 0;
1359 }
1360 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1361
1362 #ifdef HAVE_SERVER_SUPPORT
1363 int lprocfs_num_exports_seq_show(struct seq_file *m, void *data)
1364 {
1365         struct obd_device *obd = data;
1366
1367         LASSERT(obd != NULL);
1368         return seq_printf(m, "%u\n", obd->obd_num_exports);
1369 }
1370 EXPORT_SYMBOL(lprocfs_num_exports_seq_show);
1371 #endif
1372
1373 #ifndef HAVE_ONLY_PROCFS_SEQ
1374
1375 int lprocfs_rd_uint(char *page, char **start, off_t off,
1376                     int count, int *eof, void *data)
1377 {
1378         unsigned int *temp = data;
1379         return snprintf(page, count, "%u\n", *temp);
1380 }
1381 EXPORT_SYMBOL(lprocfs_rd_uint);
1382
1383 int lprocfs_rd_u64(char *page, char **start, off_t off,
1384                    int count, int *eof, void *data)
1385 {
1386         LASSERT(data != NULL);
1387         *eof = 1;
1388         return snprintf(page, count, LPU64"\n", *(__u64 *)data);
1389 }
1390 EXPORT_SYMBOL(lprocfs_rd_u64);
1391
1392 int lprocfs_rd_atomic(char *page, char **start, off_t off,
1393                    int count, int *eof, void *data)
1394 {
1395         atomic_t *atom = data;
1396         LASSERT(atom != NULL);
1397         *eof = 1;
1398         return snprintf(page, count, "%d\n", atomic_read(atom));
1399 }
1400 EXPORT_SYMBOL(lprocfs_rd_atomic);
1401
1402 int lprocfs_wr_atomic(struct file *file, const char *buffer,
1403                       unsigned long count, void *data)
1404 {
1405         atomic_t *atm = data;
1406         int val = 0;
1407         int rc;
1408
1409         rc = lprocfs_write_helper(buffer, count, &val);
1410         if (rc < 0)
1411                 return rc;
1412
1413         if (val <= 0)
1414                 return -ERANGE;
1415
1416         atomic_set(atm, val);
1417         return count;
1418 }
1419 EXPORT_SYMBOL(lprocfs_wr_atomic);
1420
1421 int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
1422                     int *eof, void *data)
1423 {
1424         struct obd_device *obd = data;
1425
1426         LASSERT(obd != NULL);
1427         *eof = 1;
1428         return snprintf(page, count, "%s\n", obd->obd_uuid.uuid);
1429 }
1430 EXPORT_SYMBOL(lprocfs_rd_uuid);
1431
1432 int lprocfs_rd_name(char *page, char **start, off_t off, int count,
1433                     int *eof, void *data)
1434 {
1435         struct obd_device *dev = data;
1436
1437         LASSERT(dev != NULL);
1438         *eof = 1;
1439         return snprintf(page, count, "%s\n", dev->obd_name);
1440 }
1441 EXPORT_SYMBOL(lprocfs_rd_name);
1442
1443 int lprocfs_rd_blksize(char *page, char **start, off_t off, int count,
1444                        int *eof, void *data)
1445 {
1446         struct obd_device *obd = data;
1447         struct obd_statfs  osfs;
1448         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1449                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1450                             OBD_STATFS_NODELAY);
1451         if (!rc) {
1452                 *eof = 1;
1453                 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
1454         }
1455         return rc;
1456 }
1457 EXPORT_SYMBOL(lprocfs_rd_blksize);
1458
1459 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off, int count,
1460                            int *eof, void *data)
1461 {
1462         struct obd_device *obd = data;
1463         struct obd_statfs  osfs;
1464         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1465                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1466                             OBD_STATFS_NODELAY);
1467         if (!rc) {
1468                 __u32 blk_size = osfs.os_bsize >> 10;
1469                 __u64 result = osfs.os_blocks;
1470
1471                 while (blk_size >>= 1)
1472                         result <<= 1;
1473
1474                 *eof = 1;
1475                 rc = snprintf(page, count, LPU64"\n", result);
1476         }
1477         return rc;
1478 }
1479 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
1480
1481 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off, int count,
1482                           int *eof, void *data)
1483 {
1484         struct obd_device *obd = data;
1485         struct obd_statfs  osfs;
1486         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1487                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1488                             OBD_STATFS_NODELAY);
1489         if (!rc) {
1490                 __u32 blk_size = osfs.os_bsize >> 10;
1491                 __u64 result = osfs.os_bfree;
1492
1493                 while (blk_size >>= 1)
1494                         result <<= 1;
1495
1496                 *eof = 1;
1497                 rc = snprintf(page, count, LPU64"\n", result);
1498         }
1499         return rc;
1500 }
1501 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
1502
1503 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off, int count,
1504                            int *eof, void *data)
1505 {
1506         struct obd_device *obd = data;
1507         struct obd_statfs  osfs;
1508         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1509                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1510                             OBD_STATFS_NODELAY);
1511         if (!rc) {
1512                 __u32 blk_size = osfs.os_bsize >> 10;
1513                 __u64 result = osfs.os_bavail;
1514
1515                 while (blk_size >>= 1)
1516                         result <<= 1;
1517
1518                 *eof = 1;
1519                 rc = snprintf(page, count, LPU64"\n", result);
1520         }
1521         return rc;
1522 }
1523 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
1524
1525 int lprocfs_rd_filestotal(char *page, char **start, off_t off, int count,
1526                           int *eof, void *data)
1527 {
1528         struct obd_device *obd = data;
1529         struct obd_statfs  osfs;
1530         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1531                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1532                             OBD_STATFS_NODELAY);
1533         if (!rc) {
1534                 *eof = 1;
1535                 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
1536         }
1537
1538         return rc;
1539 }
1540 EXPORT_SYMBOL(lprocfs_rd_filestotal);
1541
1542 int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
1543                          int *eof, void *data)
1544 {
1545         struct obd_device *obd = data;
1546         struct obd_statfs  osfs;
1547         int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
1548                             cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1549                             OBD_STATFS_NODELAY);
1550         if (!rc) {
1551                 *eof = 1;
1552                 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
1553         }
1554         return rc;
1555 }
1556 EXPORT_SYMBOL(lprocfs_rd_filesfree);
1557
1558 int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
1559                            int *eof, void *data)
1560 {
1561         struct obd_device *obd = data;
1562         struct obd_import *imp;
1563         char *imp_state_name = NULL;
1564         int rc = 0;
1565
1566         LASSERT(obd != NULL);
1567         LPROCFS_CLIMP_CHECK(obd);
1568         imp = obd->u.cli.cl_import;
1569         imp_state_name = ptlrpc_import_state_name(imp->imp_state);
1570         *eof = 1;
1571         rc = snprintf(page, count, "%s\t%s%s\n",
1572                       obd2cli_tgt(obd), imp_state_name,
1573                       imp->imp_deactive ? "\tDEACTIVATED" : "");
1574
1575         LPROCFS_CLIMP_EXIT(obd);
1576         return rc;
1577 }
1578 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
1579
1580 int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
1581                          int *eof,  void *data)
1582 {
1583         struct obd_device *obd = data;
1584         struct ptlrpc_connection *conn;
1585         int rc = 0;
1586
1587         LASSERT(obd != NULL);
1588
1589         LPROCFS_CLIMP_CHECK(obd);
1590         conn = obd->u.cli.cl_import->imp_connection;
1591         *eof = 1;
1592         if (conn && obd->u.cli.cl_import) {
1593                 rc = snprintf(page, count, "%s\n",
1594                               conn->c_remote_uuid.uuid);
1595         } else {
1596                 rc = snprintf(page, count, "%s\n", "<none>");
1597         }
1598
1599         LPROCFS_CLIMP_EXIT(obd);
1600         return rc;
1601 }
1602 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
1603
1604 /**
1605  * Append a space separated list of current set flags to str.
1606  */
1607 #define flag2str(flag) \
1608         if (imp->imp_##flag && max - len > 0) \
1609              len += snprintf(str + len, max - len, "%s" #flag, len ? ", " : "");
1610 static int obd_import_flags2str(struct obd_import *imp, char *str, int max)
1611 {
1612         int len = 0;
1613
1614         if (imp->imp_obd->obd_no_recov)
1615                 len += snprintf(str, max - len, "no_recov");
1616
1617         flag2str(invalid);
1618         flag2str(deactive);
1619         flag2str(replayable);
1620         flag2str(pingable);
1621         return len;
1622 }
1623 #undef flags2str
1624
1625 int lprocfs_rd_import(char *page, char **start, off_t off, int count,
1626                       int *eof, void *data)
1627 {
1628         struct lprocfs_counter          ret;
1629         struct lprocfs_counter_header   *header;
1630         struct obd_device               *obd    = (struct obd_device *)data;
1631         struct obd_import               *imp;
1632         struct obd_import_conn          *conn;
1633         int                             i;
1634         int                             j;
1635         int                             k;
1636         int                             rw      = 0;
1637
1638         LASSERT(obd != NULL);
1639         LPROCFS_CLIMP_CHECK(obd);
1640         imp = obd->u.cli.cl_import;
1641         *eof = 1;
1642
1643         i = snprintf(page, count,
1644                      "import:\n"
1645                      "    name: %s\n"
1646                      "    target: %s\n"
1647                      "    state: %s\n"
1648                      "    instance: %u\n"
1649                      "    connect_flags: [",
1650                      obd->obd_name,
1651                      obd2cli_tgt(obd),
1652                      ptlrpc_import_state_name(imp->imp_state),
1653                      imp->imp_connect_data.ocd_instance);
1654         i += obd_connect_flags2str(page + i, count - i,
1655                                    imp->imp_connect_data.ocd_connect_flags,
1656                                    ", ");
1657         i += snprintf(page + i, count - i,
1658                       "]\n"
1659                       "    import_flags: [");
1660         i += obd_import_flags2str(imp, page + i, count - i);
1661
1662         i += snprintf(page + i, count - i,
1663                       "]\n"
1664                       "    connection:\n"
1665                       "       failover_nids: [");
1666         spin_lock(&imp->imp_lock);
1667         j = 0;
1668         cfs_list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
1669                 i += snprintf(page + i, count - i, "%s%s", j ? ", " : "",
1670                               libcfs_nid2str(conn->oic_conn->c_peer.nid));
1671                 j++;
1672         }
1673         i += snprintf(page + i, count - i,
1674                       "]\n"
1675                       "       current_connection: %s\n"
1676                       "       connection_attempts: %u\n"
1677                       "       generation: %u\n"
1678                       "       in-progress_invalidations: %u\n",
1679                       imp->imp_connection == NULL ? "<none>" :
1680                               libcfs_nid2str(imp->imp_connection->c_peer.nid),
1681                       imp->imp_conn_cnt,
1682                       imp->imp_generation,
1683                       atomic_read(&imp->imp_inval_count));
1684         spin_unlock(&imp->imp_lock);
1685
1686         if (obd->obd_svc_stats == NULL)
1687                 goto out_climp;
1688
1689         header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
1690         lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
1691         if (ret.lc_count != 0) {
1692                 /* first argument to do_div MUST be __u64 */
1693                 __u64 sum = ret.lc_sum;
1694                 do_div(sum, ret.lc_count);
1695                 ret.lc_sum = sum;
1696         } else
1697                 ret.lc_sum = 0;
1698         i += snprintf(page + i, count - i,
1699                       "    rpcs:\n"
1700                       "       inflight: %u\n"
1701                       "       unregistering: %u\n"
1702                       "       timeouts: %u\n"
1703                       "       avg_waittime: "LPU64" %s\n",
1704                       atomic_read(&imp->imp_inflight),
1705                       atomic_read(&imp->imp_unregistering),
1706                       atomic_read(&imp->imp_timeouts),
1707                       ret.lc_sum, header->lc_units);
1708
1709         k = 0;
1710         for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1711                 if (imp->imp_at.iat_portal[j] == 0)
1712                         break;
1713                 k = max_t(unsigned int, k,
1714                           at_get(&imp->imp_at.iat_service_estimate[j]));
1715         }
1716         i += snprintf(page + i, count - i,
1717                       "    service_estimates:\n"
1718                       "       services: %u sec\n"
1719                       "       network: %u sec\n",
1720                       k,
1721                       at_get(&imp->imp_at.iat_net_latency));
1722
1723         i += snprintf(page + i, count - i,
1724                       "    transactions:\n"
1725                       "       last_replay: "LPU64"\n"
1726                       "       peer_committed: "LPU64"\n"
1727                       "       last_checked: "LPU64"\n",
1728                       imp->imp_last_replay_transno,
1729                       imp->imp_peer_committed_transno,
1730                       imp->imp_last_transno_checked);
1731
1732         /* avg data rates */
1733         for (rw = 0; rw <= 1; rw++) {
1734                 lprocfs_stats_collect(obd->obd_svc_stats,
1735                                       PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1736                                       &ret);
1737                 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1738                         /* first argument to do_div MUST be __u64 */
1739                         __u64 sum = ret.lc_sum;
1740                         do_div(sum, ret.lc_count);
1741                         ret.lc_sum = sum;
1742                         i += snprintf(page + i, count - i,
1743                                       "    %s_data_averages:\n"
1744                                       "       bytes_per_rpc: "LPU64"\n",
1745                                       rw ? "write" : "read",
1746                                       ret.lc_sum);
1747                 }
1748                 k = (int)ret.lc_sum;
1749                 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1750                 header = &obd->obd_svc_stats->ls_cnt_header[j];
1751                 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1752                 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1753                         /* first argument to do_div MUST be __u64 */
1754                         __u64 sum = ret.lc_sum;
1755                         do_div(sum, ret.lc_count);
1756                         ret.lc_sum = sum;
1757                         i += snprintf(page + i, count - i,
1758                                       "       %s_per_rpc: "LPU64"\n",
1759                                       header->lc_units, ret.lc_sum);
1760                         j = (int)ret.lc_sum;
1761                         if (j > 0)
1762                                 i += snprintf(page + i, count - i,
1763                                               "       MB_per_sec: %u.%.02u\n",
1764                                               k / j, (100 * k / j) % 100);
1765                 }
1766         }
1767
1768 out_climp:
1769         LPROCFS_CLIMP_EXIT(obd);
1770         return i;
1771 }
1772 EXPORT_SYMBOL(lprocfs_rd_import);
1773
1774 int lprocfs_rd_state(char *page, char **start, off_t off, int count,
1775                       int *eof, void *data)
1776 {
1777         struct obd_device *obd = (struct obd_device *)data;
1778         struct obd_import *imp;
1779         int i, j, k;
1780
1781         LASSERT(obd != NULL);
1782         LPROCFS_CLIMP_CHECK(obd);
1783         imp = obd->u.cli.cl_import;
1784         *eof = 1;
1785
1786         i = snprintf(page, count, "current_state: %s\n",
1787                      ptlrpc_import_state_name(imp->imp_state));
1788         i += snprintf(page + i, count - i,
1789                       "state_history:\n");
1790         k = imp->imp_state_hist_idx;
1791         for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1792                 struct import_state_hist *ish =
1793                         &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1794                 if (ish->ish_state == 0)
1795                         continue;
1796                 i += snprintf(page + i, count - i, " - ["CFS_TIME_T", %s]\n",
1797                               ish->ish_time,
1798                               ptlrpc_import_state_name(ish->ish_state));
1799         }
1800
1801         LPROCFS_CLIMP_EXIT(obd);
1802         return i;
1803 }
1804 EXPORT_SYMBOL(lprocfs_rd_state);
1805
1806 int lprocfs_at_hist_helper(char *page, int count, int rc,
1807                            struct adaptive_timeout *at)
1808 {
1809         int i;
1810         for (i = 0; i < AT_BINS; i++)
1811                 rc += snprintf(page + rc, count - rc, "%3u ", at->at_hist[i]);
1812         rc += snprintf(page + rc, count - rc, "\n");
1813         return rc;
1814 }
1815 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1816
1817 /* See also ptlrpc_lprocfs_rd_timeouts */
1818 int lprocfs_rd_timeouts(char *page, char **start, off_t off, int count,
1819                         int *eof, void *data)
1820 {
1821         struct obd_device *obd = (struct obd_device *)data;
1822         struct obd_import *imp;
1823         unsigned int cur, worst;
1824         time_t now, worstt;
1825         struct dhms ts;
1826         int i, rc = 0;
1827
1828         LASSERT(obd != NULL);
1829         LPROCFS_CLIMP_CHECK(obd);
1830         imp = obd->u.cli.cl_import;
1831         *eof = 1;
1832
1833         now = cfs_time_current_sec();
1834
1835         /* Some network health info for kicks */
1836         s2dhms(&ts, now - imp->imp_last_reply_time);
1837         rc += snprintf(page + rc, count - rc,
1838                        "%-10s : %ld, "DHMS_FMT" ago\n",
1839                        "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
1840
1841         cur = at_get(&imp->imp_at.iat_net_latency);
1842         worst = imp->imp_at.iat_net_latency.at_worst_ever;
1843         worstt = imp->imp_at.iat_net_latency.at_worst_time;
1844         s2dhms(&ts, now - worstt);
1845         rc += snprintf(page + rc, count - rc,
1846                        "%-10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
1847                        "network", cur, worst, worstt, DHMS_VARS(&ts));
1848         rc = lprocfs_at_hist_helper(page, count, rc,
1849                                     &imp->imp_at.iat_net_latency);
1850
1851         for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1852                 if (imp->imp_at.iat_portal[i] == 0)
1853                         break;
1854                 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1855                 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1856                 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1857                 s2dhms(&ts, now - worstt);
1858                 rc += snprintf(page + rc, count - rc,
1859                                "portal %-2d  : cur %3u  worst %3u (at %ld, "
1860                                DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
1861                                cur, worst, worstt, DHMS_VARS(&ts));
1862                 rc = lprocfs_at_hist_helper(page, count, rc,
1863                                           &imp->imp_at.iat_service_estimate[i]);
1864         }
1865
1866         LPROCFS_CLIMP_EXIT(obd);
1867         return rc;
1868 }
1869 EXPORT_SYMBOL(lprocfs_rd_timeouts);
1870
1871 int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
1872                              int count, int *eof, void *data)
1873 {
1874         struct obd_device *obd = data;
1875         __u64 flags;
1876         int ret = 0;
1877
1878         LPROCFS_CLIMP_CHECK(obd);
1879         flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1880         ret = snprintf(page, count, "flags="LPX64"\n", flags);
1881         ret += obd_connect_flags2str(page + ret, count - ret, flags, "\n");
1882         ret += snprintf(page + ret, count - ret, "\n");
1883         LPROCFS_CLIMP_EXIT(obd);
1884         return ret;
1885 }
1886 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
1887
1888 #ifdef HAVE_SERVER_SUPPORT
1889 int lprocfs_rd_num_exports(char *page, char **start, off_t off, int count,
1890                            int *eof,  void *data)
1891 {
1892         struct obd_device *obd = data;
1893
1894         LASSERT(obd != NULL);
1895         *eof = 1;
1896         return snprintf(page, count, "%u\n", obd->obd_num_exports);
1897 }
1898 EXPORT_SYMBOL(lprocfs_rd_num_exports);
1899 #endif
1900
1901 int lprocfs_rd_numrefs(char *page, char **start, off_t off, int count,
1902                        int *eof, void *data)
1903 {
1904         struct obd_type *class = (struct obd_type*) data;
1905
1906         LASSERT(class != NULL);
1907         *eof = 1;
1908         return snprintf(page, count, "%d\n", class->typ_refcnt);
1909 }
1910 EXPORT_SYMBOL(lprocfs_rd_numrefs);
1911
1912 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
1913 {
1914         int rc = 0;
1915
1916         LASSERT(obd != NULL);
1917         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1918         LASSERT(obd->obd_type->typ_procroot != NULL);
1919
1920         obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1921                                                obd->obd_type->typ_procroot,
1922                                                list, obd);
1923         if (IS_ERR(obd->obd_proc_entry)) {
1924                 rc = PTR_ERR(obd->obd_proc_entry);
1925                 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1926                 obd->obd_proc_entry = NULL;
1927         }
1928         return rc;
1929 }
1930 EXPORT_SYMBOL(lprocfs_obd_setup);
1931 #endif
1932
1933 int
1934 lprocfs_seq_obd_setup(struct obd_device *obd)
1935 {
1936         int rc = 0;
1937
1938         LASSERT(obd != NULL);
1939         LASSERT(obd->obd_vars != NULL);
1940         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1941         LASSERT(obd->obd_type->typ_procroot != NULL);
1942
1943         obd->obd_proc_entry = lprocfs_seq_register(obd->obd_name,
1944                                                    obd->obd_type->typ_procroot,
1945                                                    obd->obd_vars, obd);
1946         if (IS_ERR(obd->obd_proc_entry)) {
1947                 rc = PTR_ERR(obd->obd_proc_entry);
1948                 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1949                 obd->obd_proc_entry = NULL;
1950         }
1951         return rc;
1952 }
1953 EXPORT_SYMBOL(lprocfs_seq_obd_setup);
1954
1955 int lprocfs_obd_cleanup(struct obd_device *obd)
1956 {
1957         if (!obd)
1958                 return -EINVAL;
1959         if (obd->obd_proc_exports_entry) {
1960                 /* Should be no exports left */
1961                 lprocfs_remove(&obd->obd_proc_exports_entry);
1962                 obd->obd_proc_exports_entry = NULL;
1963         }
1964         if (obd->obd_proc_entry) {
1965                 lprocfs_remove(&obd->obd_proc_entry);
1966                 obd->obd_proc_entry = NULL;
1967         }
1968         return 0;
1969 }
1970 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1971
1972 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
1973 {
1974         CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
1975                client_stat->nid_proc, client_stat->nid_stats);
1976
1977         LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
1978                  "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
1979                  atomic_read(&client_stat->nid_exp_ref_count));
1980
1981         if (client_stat->nid_proc)
1982                 lprocfs_remove(&client_stat->nid_proc);
1983
1984         if (client_stat->nid_stats)
1985                 lprocfs_free_stats(&client_stat->nid_stats);
1986
1987         if (client_stat->nid_ldlm_stats)
1988                 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
1989
1990         OBD_FREE_PTR(client_stat);
1991         return;
1992
1993 }
1994
1995 void lprocfs_free_per_client_stats(struct obd_device *obd)
1996 {
1997         cfs_hash_t *hash = obd->obd_nid_stats_hash;
1998         struct nid_stat *stat;
1999         ENTRY;
2000
2001         /* we need extra list - because hash_exit called to early */
2002         /* not need locking because all clients is died */
2003         while (!cfs_list_empty(&obd->obd_nid_stats)) {
2004                 stat = cfs_list_entry(obd->obd_nid_stats.next,
2005                                       struct nid_stat, nid_list);
2006                 cfs_list_del_init(&stat->nid_list);
2007                 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
2008                 lprocfs_free_client_stats(stat);
2009         }
2010         EXIT;
2011 }
2012 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
2013
2014 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
2015 {
2016         struct lprocfs_counter  *cntr;
2017         unsigned int            percpusize;
2018         int                     rc = -ENOMEM;
2019         unsigned long           flags = 0;
2020         int                     i;
2021
2022         LASSERT(stats->ls_percpu[cpuid] == NULL);
2023         LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
2024
2025         percpusize = lprocfs_stats_counter_size(stats);
2026         LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
2027         if (stats->ls_percpu[cpuid] != NULL) {
2028                 rc = 0;
2029                 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
2030                         if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
2031                                 spin_lock_irqsave(&stats->ls_lock, flags);
2032                         else
2033                                 spin_lock(&stats->ls_lock);
2034                         if (stats->ls_biggest_alloc_num <= cpuid)
2035                                 stats->ls_biggest_alloc_num = cpuid + 1;
2036                         if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
2037                                 spin_unlock_irqrestore(&stats->ls_lock, flags);
2038                         } else {
2039                                 spin_unlock(&stats->ls_lock);
2040                         }
2041                 }
2042                 /* initialize the ls_percpu[cpuid] non-zero counter */
2043                 for (i = 0; i < stats->ls_num; ++i) {
2044                         cntr = lprocfs_stats_counter_get(stats, cpuid, i);
2045                         cntr->lc_min = LC_MIN_INIT;
2046                 }
2047         }
2048         return rc;
2049 }
2050 EXPORT_SYMBOL(lprocfs_stats_alloc_one);
2051
2052 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
2053                                           enum lprocfs_stats_flags flags)
2054 {
2055         struct lprocfs_stats    *stats;
2056         unsigned int            num_entry;
2057         unsigned int            percpusize = 0;
2058         int                     i;
2059
2060         if (num == 0)
2061                 return NULL;
2062
2063         if (lprocfs_no_percpu_stats != 0)
2064                 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
2065
2066         if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
2067                 num_entry = 1;
2068         else
2069                 num_entry = num_possible_cpus();
2070
2071         /* alloc percpu pointers for all possible cpu slots */
2072         LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
2073         if (stats == NULL)
2074                 return NULL;
2075
2076         stats->ls_num = num;
2077         stats->ls_flags = flags;
2078         spin_lock_init(&stats->ls_lock);
2079
2080         /* alloc num of counter headers */
2081         LIBCFS_ALLOC(stats->ls_cnt_header,
2082                      stats->ls_num * sizeof(struct lprocfs_counter_header));
2083         if (stats->ls_cnt_header == NULL)
2084                 goto fail;
2085
2086         if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
2087                 /* contains only one set counters */
2088                 percpusize = lprocfs_stats_counter_size(stats);
2089                 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
2090                 if (stats->ls_percpu[0] == NULL)
2091                         goto fail;
2092                 stats->ls_biggest_alloc_num = 1;
2093         } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
2094                 /* alloc all percpu data, currently only obd_memory use this */
2095                 for (i = 0; i < num_entry; ++i)
2096                         if (lprocfs_stats_alloc_one(stats, i) < 0)
2097                                 goto fail;
2098         }
2099
2100         return stats;
2101
2102 fail:
2103         lprocfs_free_stats(&stats);
2104         return NULL;
2105 }
2106 EXPORT_SYMBOL(lprocfs_alloc_stats);
2107
2108 void lprocfs_free_stats(struct lprocfs_stats **statsh)
2109 {
2110         struct lprocfs_stats *stats = *statsh;
2111         unsigned int num_entry;
2112         unsigned int percpusize;
2113         unsigned int i;
2114
2115         if (stats == NULL || stats->ls_num == 0)
2116                 return;
2117         *statsh = NULL;
2118
2119         if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
2120                 num_entry = 1;
2121         else
2122                 num_entry = num_possible_cpus();
2123
2124         percpusize = lprocfs_stats_counter_size(stats);
2125         for (i = 0; i < num_entry; i++)
2126                 if (stats->ls_percpu[i] != NULL)
2127                         LIBCFS_FREE(stats->ls_percpu[i], percpusize);
2128         if (stats->ls_cnt_header != NULL)
2129                 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
2130                                         sizeof(struct lprocfs_counter_header));
2131         LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
2132 }
2133 EXPORT_SYMBOL(lprocfs_free_stats);
2134
2135 void lprocfs_clear_stats(struct lprocfs_stats *stats)
2136 {
2137         struct lprocfs_counter          *percpu_cntr;
2138         int                             i;
2139         int                             j;
2140         unsigned int                    num_entry;
2141         unsigned long                   flags = 0;
2142
2143         num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
2144
2145         for (i = 0; i < num_entry; i++) {
2146                 if (stats->ls_percpu[i] == NULL)
2147                         continue;
2148                 for (j = 0; j < stats->ls_num; j++) {
2149                         percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
2150                         percpu_cntr->lc_count           = 0;
2151                         percpu_cntr->lc_min             = LC_MIN_INIT;
2152                         percpu_cntr->lc_max             = 0;
2153                         percpu_cntr->lc_sumsquare       = 0;
2154                         percpu_cntr->lc_sum             = 0;
2155                         if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
2156                                 percpu_cntr->lc_sum_irq = 0;
2157                 }
2158         }
2159
2160         lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
2161 }
2162 EXPORT_SYMBOL(lprocfs_clear_stats);
2163
2164 static ssize_t lprocfs_stats_seq_write(struct file *file, const char *buf,
2165                                        size_t len, loff_t *off)
2166 {
2167         struct seq_file *seq = file->private_data;
2168         struct lprocfs_stats *stats = seq->private;
2169
2170         lprocfs_clear_stats(stats);
2171
2172         return len;
2173 }
2174
2175 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
2176 {
2177         struct lprocfs_stats *stats = p->private;
2178
2179         return (*pos < stats->ls_num) ? pos : NULL;
2180 }
2181
2182 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
2183 {
2184 }
2185
2186 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
2187 {
2188         (*pos)++;
2189
2190         return lprocfs_stats_seq_start(p, pos);
2191 }
2192
2193 /* seq file export of one lprocfs counter */
2194 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
2195 {
2196         struct lprocfs_stats            *stats  = p->private;
2197         struct lprocfs_counter_header   *hdr;
2198         struct lprocfs_counter           ctr;
2199         int                              idx    = *(loff_t *)v;
2200         int                              rc     = 0;
2201
2202         if (idx == 0) {
2203                 struct timeval now;
2204
2205                 do_gettimeofday(&now);
2206                 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
2207                                 "snapshot_time", now.tv_sec, now.tv_usec);
2208                 if (rc < 0)
2209                         return rc;
2210         }
2211
2212         hdr = &stats->ls_cnt_header[idx];
2213         lprocfs_stats_collect(stats, idx, &ctr);
2214
2215         if (ctr.lc_count == 0)
2216                 goto out;
2217
2218         rc = seq_printf(p, "%-25s "LPD64" samples [%s]", hdr->lc_name,
2219                         ctr.lc_count, hdr->lc_units);
2220         if (rc < 0)
2221                 goto out;
2222
2223         if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
2224                 rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
2225                                 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
2226                 if (rc < 0)
2227                         goto out;
2228                 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
2229                         rc = seq_printf(p, " "LPD64, ctr.lc_sumsquare);
2230                 if (rc < 0)
2231                         goto out;
2232         }
2233         rc = seq_printf(p, "\n");
2234 out:
2235         return (rc < 0) ? rc : 0;
2236 }
2237
2238 struct seq_operations lprocfs_stats_seq_sops = {
2239         .start  = lprocfs_stats_seq_start,
2240         .stop   = lprocfs_stats_seq_stop,
2241         .next   = lprocfs_stats_seq_next,
2242         .show   = lprocfs_stats_seq_show,
2243 };
2244
2245 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
2246 {
2247         struct seq_file *seq;
2248         int rc;
2249
2250 #ifndef HAVE_ONLY_PROCFS_SEQ
2251         if (LPROCFS_ENTRY_CHECK(PDE(inode)))
2252                 return -ENOENT;
2253 #endif
2254         rc = seq_open(file, &lprocfs_stats_seq_sops);
2255         if (rc)
2256                 return rc;
2257         seq = file->private_data;
2258         seq->private = PDE_DATA(inode);
2259         return 0;
2260 }
2261
2262 struct file_operations lprocfs_stats_seq_fops = {
2263         .owner   = THIS_MODULE,
2264         .open    = lprocfs_stats_seq_open,
2265         .read    = seq_read,
2266         .write   = lprocfs_stats_seq_write,
2267         .llseek  = seq_lseek,
2268         .release = lprocfs_seq_release,
2269 };
2270
2271 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
2272                            struct lprocfs_stats *stats)
2273 {
2274         struct proc_dir_entry *entry;
2275         LASSERT(root != NULL);
2276
2277         entry = proc_create_data(name, 0644, root,
2278                                  &lprocfs_stats_seq_fops, stats);
2279         if (entry == NULL)
2280                 return -ENOMEM;
2281         return 0;
2282 }
2283 EXPORT_SYMBOL(lprocfs_register_stats);
2284
2285 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
2286                           unsigned conf, const char *name, const char *units)
2287 {
2288         struct lprocfs_counter_header   *header;
2289         struct lprocfs_counter          *percpu_cntr;
2290         unsigned long                   flags = 0;
2291         unsigned int                    i;
2292         unsigned int                    num_cpu;
2293
2294         LASSERT(stats != NULL);
2295
2296         header = &stats->ls_cnt_header[index];
2297         LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
2298                  index, name, units);
2299
2300         header->lc_config = conf;
2301         header->lc_name   = name;
2302         header->lc_units  = units;
2303
2304         num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
2305         for (i = 0; i < num_cpu; ++i) {
2306                 if (stats->ls_percpu[i] == NULL)
2307                         continue;
2308                 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
2309                 percpu_cntr->lc_count           = 0;
2310                 percpu_cntr->lc_min             = LC_MIN_INIT;
2311                 percpu_cntr->lc_max             = 0;
2312                 percpu_cntr->lc_sumsquare       = 0;
2313                 percpu_cntr->lc_sum             = 0;
2314                 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
2315                         percpu_cntr->lc_sum_irq = 0;
2316         }
2317         lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
2318 }
2319 EXPORT_SYMBOL(lprocfs_counter_init);
2320
2321 #define LPROCFS_OBD_OP_INIT(base, stats, op)                               \
2322 do {                                                                       \
2323         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);              \
2324         LASSERT(coffset < stats->ls_num);                                  \
2325         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");              \
2326 } while (0)
2327
2328 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
2329 {
2330         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
2331         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
2332         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
2333         LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
2334         LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
2335         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
2336         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
2337         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
2338         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
2339         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
2340         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
2341         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
2342         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
2343         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
2344         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
2345         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
2346         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
2347         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
2348         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
2349         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
2350         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
2351         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
2352         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
2353         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async);
2354         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
2355         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
2356         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
2357         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
2358         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
2359         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
2360         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
2361         LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
2362         LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
2363         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
2364         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
2365         LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
2366         LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
2367         LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
2368         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
2369         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
2370         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
2371         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
2372         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
2373         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
2374         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
2375         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
2376         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
2377         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
2378         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
2379         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
2380         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
2381         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
2382         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
2383
2384         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
2385 }
2386 EXPORT_SYMBOL(lprocfs_init_ops_stats);
2387
2388 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
2389 {
2390         struct lprocfs_stats *stats;
2391         unsigned int num_stats;
2392         int rc, i;
2393
2394         LASSERT(obd->obd_stats == NULL);
2395         LASSERT(obd->obd_proc_entry != NULL);
2396         LASSERT(obd->obd_cntr_base == 0);
2397
2398         num_stats = NUM_OBD_STATS + num_private_stats;
2399         stats = lprocfs_alloc_stats(num_stats, 0);
2400         if (stats == NULL)
2401                 return -ENOMEM;
2402
2403         lprocfs_init_ops_stats(num_private_stats, stats);
2404
2405         for (i = num_private_stats; i < num_stats; i++) {
2406                 /* If this LBUGs, it is likely that an obd
2407                  * operation was added to struct obd_ops in
2408                  * <obd.h>, and that the corresponding line item
2409                  * LPROCFS_OBD_OP_INIT(.., .., opname)
2410                  * is missing from the list above. */
2411                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
2412                          "Missing obd_stat initializer obd_op "
2413                          "operation at offset %d.\n", i - num_private_stats);
2414         }
2415         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
2416         if (rc < 0) {
2417                 lprocfs_free_stats(&stats);
2418         } else {
2419                 obd->obd_stats  = stats;
2420                 obd->obd_cntr_base = num_private_stats;
2421         }
2422         return rc;
2423 }
2424 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
2425
2426 void lprocfs_free_obd_stats(struct obd_device *obd)
2427 {
2428         if (obd->obd_stats)
2429                 lprocfs_free_stats(&obd->obd_stats);
2430 }
2431 EXPORT_SYMBOL(lprocfs_free_obd_stats);
2432
2433 /* Note that we only init md counters for ops whose offset is less
2434  * than NUM_MD_STATS. This is explained in a comment in the definition
2435  * of struct md_ops. */
2436 #define LPROCFS_MD_OP_INIT(base, stats, op)                                    \
2437         do {                                                                   \
2438                 unsigned int _idx = base + MD_COUNTER_OFFSET(op);              \
2439                                                                                \
2440                 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS) {                    \
2441                         LASSERT(_idx < stats->ls_num);                         \
2442                         lprocfs_counter_init(stats, _idx, 0, #op, "reqs");     \
2443                 }                                                              \
2444         } while (0)
2445
2446 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
2447 {
2448         LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
2449         LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
2450         LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
2451         LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
2452         LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
2453         LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
2454         LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
2455         LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
2456         LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
2457         LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
2458         LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
2459         LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
2460         LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
2461         LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
2462         LPROCFS_MD_OP_INIT(num_private_stats, stats, fsync);
2463         LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
2464         LPROCFS_MD_OP_INIT(num_private_stats, stats, read_entry);
2465         LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
2466         LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
2467         LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
2468         LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
2469         LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
2470         LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
2471         LPROCFS_MD_OP_INIT(num_private_stats, stats, update_lsm_md);
2472         LPROCFS_MD_OP_INIT(num_private_stats, stats, merge_attr);
2473         LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
2474         LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
2475         LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
2476         LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
2477         LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
2478         LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
2479         LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
2480         LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
2481         LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
2482         LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
2483 }
2484 EXPORT_SYMBOL(lprocfs_init_mps_stats);
2485
2486 int lprocfs_alloc_md_stats(struct obd_device *obd,
2487                            unsigned int num_private_stats)
2488 {
2489         struct lprocfs_stats *stats;
2490         unsigned int num_stats;
2491         int rc, i;
2492
2493         CLASSERT(offsetof(struct md_ops, MD_STATS_FIRST_OP) == 0);
2494         CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) == 0);
2495         CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) > 0);
2496
2497         /* TODO Ensure that this function is only used where
2498          * appropriate by adding an assertion to the effect that
2499          * obd->obd_type->typ_md_ops is not NULL. We can't do this now
2500          * because mdt_procfs_init() uses this function to allocate
2501          * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
2502          * mdt layer does not use the md_ops interface. This is
2503          * confusing and a waste of memory. See LU-2484.
2504          */
2505         LASSERT(obd->obd_proc_entry != NULL);
2506         LASSERT(obd->obd_md_stats == NULL);
2507         LASSERT(obd->obd_md_cntr_base == 0);
2508
2509         num_stats = NUM_MD_STATS + num_private_stats;
2510         stats = lprocfs_alloc_stats(num_stats, 0);
2511         if (stats == NULL)
2512                 return -ENOMEM;
2513
2514         lprocfs_init_mps_stats(num_private_stats, stats);
2515
2516         for (i = num_private_stats; i < num_stats; i++) {
2517                 if (stats->ls_cnt_header[i].lc_name == NULL) {
2518                         CERROR("Missing md_stat initializer md_op "
2519                                "operation at offset %d. Aborting.\n",
2520                                i - num_private_stats);
2521                         LBUG();
2522                 }
2523         }
2524
2525         rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
2526         if (rc < 0) {
2527                 lprocfs_free_stats(&stats);
2528         } else {
2529                 obd->obd_md_stats = stats;
2530                 obd->obd_md_cntr_base = num_private_stats;
2531         }
2532
2533         return rc;
2534 }
2535 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
2536
2537 void lprocfs_free_md_stats(struct obd_device *obd)
2538 {
2539         struct lprocfs_stats *stats = obd->obd_md_stats;
2540
2541         if (stats != NULL) {
2542                 obd->obd_md_stats = NULL;
2543                 obd->obd_md_cntr_base = 0;
2544                 lprocfs_free_stats(&stats);
2545         }
2546 }
2547 EXPORT_SYMBOL(lprocfs_free_md_stats);
2548
2549 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
2550 {
2551         lprocfs_counter_init(ldlm_stats,
2552                              LDLM_ENQUEUE - LDLM_FIRST_OPC,
2553                              0, "ldlm_enqueue", "reqs");
2554         lprocfs_counter_init(ldlm_stats,
2555                              LDLM_CONVERT - LDLM_FIRST_OPC,
2556                              0, "ldlm_convert", "reqs");
2557         lprocfs_counter_init(ldlm_stats,
2558                              LDLM_CANCEL - LDLM_FIRST_OPC,
2559                              0, "ldlm_cancel", "reqs");
2560         lprocfs_counter_init(ldlm_stats,
2561                              LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
2562                              0, "ldlm_bl_callback", "reqs");
2563         lprocfs_counter_init(ldlm_stats,
2564                              LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
2565                              0, "ldlm_cp_callback", "reqs");
2566         lprocfs_counter_init(ldlm_stats,
2567                              LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
2568                              0, "ldlm_gl_callback", "reqs");
2569 }
2570 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
2571
2572 #ifdef HAVE_SERVER_SUPPORT
2573 int lprocfs_exp_nid_seq_show(struct seq_file *m, void *data)
2574 {
2575         struct obd_export *exp = m->private;
2576         LASSERT(exp != NULL);
2577         return seq_printf(m, "%s\n", obd_export_nid2str(exp));
2578 }
2579
2580 int lprocfs_exp_print_uuid_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
2581                                 cfs_hlist_node_t *hnode, void *cb_data)
2582
2583 {
2584         struct obd_export *exp = cfs_hash_object(hs, hnode);
2585         struct seq_file *m = cb_data;
2586
2587         if (exp->exp_nid_stats)
2588                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
2589         return 0;
2590 }
2591
2592 int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
2593 {
2594         struct nid_stat *stats = m->private;
2595         struct obd_device *obd = stats->nid_obd;
2596
2597         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
2598                                 lprocfs_exp_print_uuid_seq, m);
2599         return 0;
2600 }
2601 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
2602
2603 int lprocfs_exp_print_hash_seq(cfs_hash_t *hs, cfs_hash_bd_t *bd,
2604                                 cfs_hlist_node_t *hnode, void *cb_data)
2605
2606 {
2607         struct seq_file *m = cb_data;
2608         struct obd_export *exp = cfs_hash_object(hs, hnode);
2609
2610         if (exp->exp_lock_hash != NULL) {
2611                 cfs_hash_debug_header_seq(m);
2612                 cfs_hash_debug_str_seq(hs, m);
2613         }
2614         return 0;
2615 }
2616
2617 int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
2618 {
2619         struct nid_stat *stats = m->private;
2620         struct obd_device *obd = stats->nid_obd;
2621
2622         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
2623                                 lprocfs_exp_print_hash_seq, m);
2624         return 0;
2625 }
2626 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
2627
2628 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
2629 {
2630         return seq_printf(m, "%s\n", "Write into this file to clear all nid "
2631                                 "stats and stale nid entries");
2632 }
2633 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
2634
2635 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
2636 {
2637         struct nid_stat *stat = obj;
2638         ENTRY;
2639
2640         CDEBUG(D_INFO,"refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
2641         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
2642                 /* object has only hash references. */
2643                 spin_lock(&stat->nid_obd->obd_nid_lock);
2644                 cfs_list_move(&stat->nid_list, data);
2645                 spin_unlock(&stat->nid_obd->obd_nid_lock);
2646                 RETURN(1);
2647         }
2648         /* we has reference to object - only clear data*/
2649         if (stat->nid_stats)
2650                 lprocfs_clear_stats(stat->nid_stats);
2651
2652         RETURN(0);
2653 }
2654
2655 ssize_t
2656 lprocfs_nid_stats_clear_seq_write(struct file *file, const char *buffer,
2657                                         size_t count, loff_t *off)
2658 {
2659         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
2660         struct nid_stat *client_stat;
2661         CFS_LIST_HEAD(free_list);
2662
2663         cfs_hash_cond_del(obd->obd_nid_stats_hash,
2664                                 lprocfs_nid_stats_clear_write_cb, &free_list);
2665
2666         while (!cfs_list_empty(&free_list)) {
2667                 client_stat = cfs_list_entry(free_list.next, struct nid_stat,
2668                                                 nid_list);
2669                 cfs_list_del_init(&client_stat->nid_list);
2670                 lprocfs_free_client_stats(client_stat);
2671         }
2672         return count;
2673 }
2674 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
2675
2676 #ifndef HAVE_ONLY_PROCFS_SEQ
2677 int lprocfs_exp_rd_nid(char *page, char **start, off_t off, int count,
2678                          int *eof,  void *data)
2679 {
2680         struct obd_export *exp = data;
2681         LASSERT(exp != NULL);
2682         *eof = 1;
2683         return snprintf(page, count, "%s\n", obd_export_nid2str(exp));
2684 }
2685
2686 struct exp_uuid_cb_data {
2687         char                   *page;
2688         int                     count;
2689         int                    *eof;
2690         int                    *len;
2691 };
2692
2693 static void
2694 lprocfs_exp_rd_cb_data_init(struct exp_uuid_cb_data *cb_data, char *page,
2695                             int count, int *eof, int *len)
2696 {
2697         cb_data->page = page;
2698         cb_data->count = count;
2699         cb_data->eof = eof;
2700         cb_data->len = len;
2701 }
2702
2703 int lprocfs_exp_print_uuid(cfs_hash_t *hs, cfs_hash_bd_t *bd,
2704                            cfs_hlist_node_t *hnode, void *cb_data)
2705
2706 {
2707         struct obd_export *exp = cfs_hash_object(hs, hnode);
2708         struct exp_uuid_cb_data *data = (struct exp_uuid_cb_data *)cb_data;
2709
2710         if (exp->exp_nid_stats)
2711                 *data->len += snprintf((data->page + *data->len),
2712                                        data->count, "%s\n",
2713                                        obd_uuid2str(&exp->exp_client_uuid));
2714         return 0;
2715 }
2716
2717 int lprocfs_exp_rd_uuid(char *page, char **start, off_t off, int count,
2718                         int *eof,  void *data)
2719 {
2720         struct nid_stat *stats = (struct nid_stat *)data;
2721         struct exp_uuid_cb_data cb_data;
2722         struct obd_device *obd = stats->nid_obd;
2723         int len = 0;
2724
2725         *eof = 1;
2726         page[0] = '\0';
2727         lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
2728         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
2729                               lprocfs_exp_print_uuid, &cb_data);
2730         return (*cb_data.len);
2731 }
2732
2733 int lprocfs_exp_print_hash(cfs_hash_t *hs, cfs_hash_bd_t *bd,
2734                            cfs_hlist_node_t *hnode, void *cb_data)
2735
2736 {
2737         struct exp_uuid_cb_data *data = cb_data;
2738         struct obd_export       *exp = cfs_hash_object(hs, hnode);
2739
2740         if (exp->exp_lock_hash != NULL) {
2741                 if (!*data->len) {
2742                         *data->len += cfs_hash_debug_header(data->page,
2743                                                             data->count);
2744                 }
2745                 *data->len += cfs_hash_debug_str(hs, data->page + *data->len,
2746                                                  data->count);
2747         }
2748
2749         return 0;
2750 }
2751
2752 int lprocfs_exp_rd_hash(char *page, char **start, off_t off, int count,
2753                         int *eof,  void *data)
2754 {
2755         struct nid_stat *stats = (struct nid_stat *)data;
2756         struct exp_uuid_cb_data cb_data;
2757         struct obd_device *obd = stats->nid_obd;
2758         int len = 0;
2759
2760         *eof = 1;
2761         page[0] = '\0';
2762         lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
2763
2764         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
2765                               lprocfs_exp_print_hash, &cb_data);
2766         return (*cb_data.len);
2767 }
2768
2769 int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
2770                                         int count, int *eof,  void *data)
2771 {
2772         *eof = 1;
2773         return snprintf(page, count, "%s\n",
2774                         "Write into this file to clear all nid stats and "
2775                         "stale nid entries");
2776 }
2777 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
2778
2779 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
2780                                   unsigned long count, void *data)
2781 {
2782         struct obd_device *obd = (struct obd_device *)data;
2783         struct nid_stat *client_stat;
2784         CFS_LIST_HEAD(free_list);
2785
2786         cfs_hash_cond_del(obd->obd_nid_stats_hash,
2787                           lprocfs_nid_stats_clear_write_cb, &free_list);
2788
2789         while (!cfs_list_empty(&free_list)) {
2790                 client_stat = cfs_list_entry(free_list.next, struct nid_stat,
2791                                              nid_list);
2792                 cfs_list_del_init(&client_stat->nid_list);
2793                 lprocfs_free_client_stats(client_stat);
2794         }
2795
2796         return count;
2797 }
2798 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
2799 #endif
2800
2801 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
2802 {
2803         struct nid_stat *new_stat, *old_stat;
2804         struct obd_device *obd = NULL;
2805         cfs_proc_dir_entry_t *entry;
2806         char *buffer = NULL;
2807         int rc = 0;
2808         ENTRY;
2809
2810         *newnid = 0;
2811
2812         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
2813             !exp->exp_obd->obd_nid_stats_hash)
2814                 RETURN(-EINVAL);
2815
2816         /* not test against zero because eric say:
2817          * You may only test nid against another nid, or LNET_NID_ANY.
2818          * Anything else is nonsense.*/
2819         if (!nid || *nid == LNET_NID_ANY)
2820                 RETURN(0);
2821
2822         spin_lock(&exp->exp_lock);
2823         if (exp->exp_nid_stats != NULL) {
2824                 spin_unlock(&exp->exp_lock);
2825                 RETURN(-EALREADY);
2826         }
2827         spin_unlock(&exp->exp_lock);
2828
2829         obd = exp->exp_obd;
2830
2831         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
2832
2833         OBD_ALLOC_PTR(new_stat);
2834         if (new_stat == NULL)
2835                 RETURN(-ENOMEM);
2836
2837         new_stat->nid               = *nid;
2838         new_stat->nid_obd           = exp->exp_obd;
2839         /* we need set default refcount to 1 to balance obd_disconnect */
2840         atomic_set(&new_stat->nid_exp_ref_count, 1);
2841
2842         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
2843                                            nid, &new_stat->nid_hash);
2844         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
2845                old_stat, libcfs_nid2str(*nid),
2846                atomic_read(&new_stat->nid_exp_ref_count));
2847
2848         /* Return -EALREADY here so that we know that the /proc
2849          * entry already has been created */
2850         if (old_stat != new_stat) {
2851                 spin_lock(&exp->exp_lock);
2852                 if (exp->exp_nid_stats) {
2853                         LASSERT(exp->exp_nid_stats == old_stat);
2854                         nidstat_putref(exp->exp_nid_stats);
2855                 }
2856                 exp->exp_nid_stats = old_stat;
2857                 spin_unlock(&exp->exp_lock);
2858                 GOTO(destroy_new, rc = -EALREADY);
2859         }
2860         /* not found - create */
2861         OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
2862         if (buffer == NULL)
2863                 GOTO(destroy_new, rc = -ENOMEM);
2864
2865         memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
2866 #ifndef HAVE_ONLY_PROCFS_SEQ
2867         new_stat->nid_proc = lprocfs_register(buffer,
2868                                                 obd->obd_proc_exports_entry,
2869                                                 NULL, NULL);
2870 #else
2871         new_stat->nid_proc = lprocfs_seq_register(buffer,
2872                                                 obd->obd_proc_exports_entry,
2873                                                 NULL, NULL);
2874 #endif
2875         OBD_FREE(buffer, LNET_NIDSTR_SIZE);
2876
2877         if (IS_ERR(new_stat->nid_proc)) {
2878                 rc = PTR_ERR(new_stat->nid_proc);
2879                 new_stat->nid_proc = NULL;
2880                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
2881                        obd->obd_name, libcfs_nid2str(*nid), rc);
2882                 GOTO(destroy_new_ns, rc);
2883         }
2884
2885 #ifndef HAVE_ONLY_PROCFS_SEQ
2886         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
2887                                    lprocfs_exp_rd_uuid, NULL, new_stat, NULL);
2888 #else
2889         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
2890                                         new_stat, &lprocfs_exp_uuid_fops);
2891 #endif
2892         if (IS_ERR(entry)) {
2893                 CWARN("Error adding the NID stats file\n");
2894                 rc = PTR_ERR(entry);
2895                 GOTO(destroy_new_ns, rc);
2896         }
2897
2898 #ifndef HAVE_ONLY_PROCFS_SEQ
2899         entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
2900                                    lprocfs_exp_rd_hash, NULL, new_stat, NULL);
2901 #else
2902         entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
2903                                         new_stat, &lprocfs_exp_hash_fops);
2904 #endif
2905         if (IS_ERR(entry)) {
2906                 CWARN("Error adding the hash file\n");
2907                 rc = PTR_ERR(entry);
2908                 GOTO(destroy_new_ns, rc);
2909         }
2910
2911         spin_lock(&exp->exp_lock);
2912         exp->exp_nid_stats = new_stat;
2913         spin_unlock(&exp->exp_lock);
2914         *newnid = 1;
2915         /* protect competitive add to list, not need locking on destroy */
2916         spin_lock(&obd->obd_nid_lock);
2917         cfs_list_add(&new_stat->nid_list, &obd->obd_nid_stats);
2918         spin_unlock(&obd->obd_nid_lock);
2919
2920         RETURN(rc);
2921
2922 destroy_new_ns:
2923         if (new_stat->nid_proc != NULL)
2924                 lprocfs_remove(&new_stat->nid_proc);
2925         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
2926
2927 destroy_new:
2928         nidstat_putref(new_stat);
2929         OBD_FREE_PTR(new_stat);
2930         RETURN(rc);
2931 }
2932 EXPORT_SYMBOL(lprocfs_exp_setup);
2933 #endif
2934
2935 int lprocfs_exp_cleanup(struct obd_export *exp)
2936 {
2937         struct nid_stat *stat = exp->exp_nid_stats;
2938
2939         if(!stat || !exp->exp_obd)
2940                 RETURN(0);
2941
2942         nidstat_putref(exp->exp_nid_stats);
2943         exp->exp_nid_stats = NULL;
2944
2945         return 0;
2946 }
2947 EXPORT_SYMBOL(lprocfs_exp_cleanup);
2948
2949 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
2950                           struct lprocfs_counter_header *header,
2951                           enum lprocfs_stats_flags flags,
2952                           enum lprocfs_fields_flags field)
2953 {
2954         __s64 ret = 0;
2955
2956         if (lc == NULL || header == NULL)
2957                 RETURN(0);
2958
2959         switch (field) {
2960                 case LPROCFS_FIELDS_FLAGS_CONFIG:
2961                         ret = header->lc_config;
2962                         break;
2963                 case LPROCFS_FIELDS_FLAGS_SUM:
2964                         ret = lc->lc_sum;
2965                         if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
2966                                 ret += lc->lc_sum_irq;
2967                         break;
2968                 case LPROCFS_FIELDS_FLAGS_MIN:
2969                         ret = lc->lc_min;
2970                         break;
2971                 case LPROCFS_FIELDS_FLAGS_MAX:
2972                         ret = lc->lc_max;
2973                         break;
2974                 case LPROCFS_FIELDS_FLAGS_AVG:
2975                         ret = (lc->lc_max - lc->lc_min) / 2;
2976                         break;
2977                 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
2978                         ret = lc->lc_sumsquare;
2979                         break;
2980                 case LPROCFS_FIELDS_FLAGS_COUNT:
2981                         ret = lc->lc_count;
2982                         break;
2983                 default:
2984                         break;
2985         };
2986         RETURN(ret);
2987 }
2988 EXPORT_SYMBOL(lprocfs_read_helper);
2989
2990 int lprocfs_write_helper(const char *buffer, unsigned long count,
2991                          int *val)
2992 {
2993         return lprocfs_write_frac_helper(buffer, count, val, 1);
2994 }
2995 EXPORT_SYMBOL(lprocfs_write_helper);
2996
2997 int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
2998                               int *val, int mult)
2999 {
3000         char kernbuf[20], *end, *pbuf;
3001
3002         if (count > (sizeof(kernbuf) - 1))
3003                 return -EINVAL;
3004
3005         if (copy_from_user(kernbuf, buffer, count))
3006                 return -EFAULT;
3007
3008         kernbuf[count] = '\0';
3009         pbuf = kernbuf;
3010         if (*pbuf == '-') {
3011                 mult = -mult;
3012                 pbuf++;
3013         }
3014
3015         *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
3016         if (pbuf == end)
3017                 return -EINVAL;
3018
3019         if (end != NULL && *end == '.') {
3020                 int temp_val, pow = 1;
3021                 int i;
3022
3023                 pbuf = end + 1;
3024                 if (strlen(pbuf) > 5)
3025                         pbuf[5] = '\0'; /*only allow 5bits fractional*/
3026
3027                 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
3028
3029                 if (pbuf < end) {
3030                         for (i = 0; i < (end - pbuf); i++)
3031                                 pow *= 10;
3032
3033                         *val += temp_val / pow;
3034                 }
3035         }
3036         return 0;
3037 }
3038 EXPORT_SYMBOL(lprocfs_write_frac_helper);
3039
3040 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
3041                              int mult)
3042 {
3043         long decimal_val, frac_val;
3044         int prtn;
3045
3046         if (count < 10)
3047                 return -EINVAL;
3048
3049         decimal_val = val / mult;
3050         prtn = snprintf(buffer, count, "%ld", decimal_val);
3051         frac_val = val % mult;
3052
3053         if (prtn < (count - 4) && frac_val > 0) {
3054                 long temp_frac;
3055                 int i, temp_mult = 1, frac_bits = 0;
3056
3057                 temp_frac = frac_val * 10;
3058                 buffer[prtn++] = '.';
3059                 while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
3060                         /* only reserved 2 bits fraction */
3061                         buffer[prtn++] ='0';
3062                         temp_frac *= 10;
3063                         frac_bits++;
3064                 }
3065                 /*
3066                  * Need to think these cases :
3067                  *      1. #echo x.00 > /proc/xxx       output result : x
3068                  *      2. #echo x.0x > /proc/xxx       output result : x.0x
3069                  *      3. #echo x.x0 > /proc/xxx       output result : x.x
3070                  *      4. #echo x.xx > /proc/xxx       output result : x.xx
3071                  *      Only reserved 2 bits fraction.
3072                  */
3073                 for (i = 0; i < (5 - prtn); i++)
3074                         temp_mult *= 10;
3075
3076                 frac_bits = min((int)count - prtn, 3 - frac_bits);
3077                 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
3078                                  frac_val * temp_mult / mult);
3079
3080                 prtn--;
3081                 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
3082                         prtn--;
3083                         if (buffer[prtn] == '.') {
3084                                 prtn--;
3085                                 break;
3086                         }
3087                 }
3088                 prtn++;
3089         }
3090         buffer[prtn++] ='\n';
3091         return prtn;
3092 }
3093 EXPORT_SYMBOL(lprocfs_read_frac_helper);
3094
3095 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
3096 {
3097         long decimal_val, frac_val;
3098
3099         decimal_val = val / mult;
3100         seq_printf(m, "%ld", decimal_val);
3101         frac_val = val % mult;
3102
3103         if (frac_val > 0) {
3104                 frac_val *= 100;
3105                 frac_val /= mult;
3106         }
3107         if (frac_val > 0) {
3108                 /* Three cases: x0, xx, 0x */
3109                 if ((frac_val % 10) != 0)
3110                         seq_printf(m, ".%ld", frac_val);
3111                 else
3112                         seq_printf(m, ".%ld", frac_val / 10);
3113         }
3114
3115         seq_printf(m, "\n");
3116         return 0;
3117 }
3118 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
3119
3120 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,__u64 *val)
3121 {
3122         return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
3123 }
3124 EXPORT_SYMBOL(lprocfs_write_u64_helper);
3125
3126 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
3127                               __u64 *val, int mult)
3128 {
3129         char kernbuf[22], *end, *pbuf;
3130         __u64 whole, frac = 0, units;
3131         unsigned frac_d = 1;
3132
3133         if (count > (sizeof(kernbuf) - 1))
3134                 return -EINVAL;
3135
3136         if (copy_from_user(kernbuf, buffer, count))
3137                 return -EFAULT;
3138
3139         kernbuf[count] = '\0';
3140         pbuf = kernbuf;
3141         if (*pbuf == '-') {
3142                 mult = -mult;
3143                 pbuf++;
3144         }
3145
3146         whole = simple_strtoull(pbuf, &end, 10);
3147         if (pbuf == end)
3148                 return -EINVAL;
3149
3150         if (end != NULL && *end == '.') {
3151                 int i;
3152                 pbuf = end + 1;
3153
3154                 /* need to limit frac_d to a __u32 */
3155                 if (strlen(pbuf) > 10)
3156                         pbuf[10] = '\0';
3157
3158                 frac = simple_strtoull(pbuf, &end, 10);
3159                 /* count decimal places */
3160                 for (i = 0; i < (end - pbuf); i++)
3161                         frac_d *= 10;
3162         }
3163
3164         units = 1;
3165         if (end != NULL) {
3166                 switch (*end) {
3167                 case 'p': case 'P':
3168                         units <<= 10;
3169                 case 't': case 'T':
3170                         units <<= 10;
3171                 case 'g': case 'G':
3172                         units <<= 10;
3173                 case 'm': case 'M':
3174                         units <<= 10;
3175                 case 'k': case 'K':
3176                         units <<= 10;
3177                 }
3178         }
3179         /* Specified units override the multiplier */
3180         if (units)
3181                 mult = mult < 0 ? -units : units;
3182
3183         frac *= mult;
3184         do_div(frac, frac_d);
3185         *val = whole * mult + frac;
3186         return 0;
3187 }
3188 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
3189
3190 static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
3191 {
3192         size_t l2;
3193
3194         l2 = strlen(s2);
3195         if (!l2)
3196                 return (char *)s1;
3197         while (len >= l2) {
3198                 len--;
3199                 if (!memcmp(s1, s2, l2))
3200                         return (char *)s1;
3201                 s1++;
3202         }
3203         return NULL;
3204 }
3205
3206 /**
3207  * Find the string \a name in the input \a buffer, and return a pointer to the
3208  * value immediately following \a name, reducing \a count appropriately.
3209  * If \a name is not found the original \a buffer is returned.
3210  */
3211 char *lprocfs_find_named_value(const char *buffer, const char *name,
3212                                 size_t *count)
3213 {
3214         char *val;
3215         size_t buflen = *count;
3216
3217         /* there is no strnstr() in rhel5 and ubuntu kernels */
3218         val = lprocfs_strnstr(buffer, name, buflen);
3219         if (val == NULL)
3220                 return (char *)buffer;
3221
3222         val += strlen(name);                             /* skip prefix */
3223         while (val < buffer + buflen && isspace(*val)) /* skip separator */
3224                 val++;
3225
3226         *count = 0;
3227         while (val < buffer + buflen && isalnum(*val)) {
3228                 ++*count;
3229                 ++val;
3230         }
3231
3232         return val - *count;
3233 }
3234 EXPORT_SYMBOL(lprocfs_find_named_value);
3235
3236 int lprocfs_seq_create(cfs_proc_dir_entry_t *parent,
3237                        const char *name,
3238                        mode_t mode,
3239                        const struct file_operations *seq_fops,
3240                        void *data)
3241 {
3242         struct proc_dir_entry *entry;
3243         ENTRY;
3244
3245         /* Disallow secretly (un)writable entries. */
3246         LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
3247
3248         entry = proc_create_data(name, mode, parent, seq_fops, data);
3249
3250         if (entry == NULL)
3251                 RETURN(-ENOMEM);
3252
3253         RETURN(0);
3254 }
3255 EXPORT_SYMBOL(lprocfs_seq_create);
3256
3257 int lprocfs_obd_seq_create(struct obd_device *dev,
3258                            const char *name,
3259                            mode_t mode,
3260                            const struct file_operations *seq_fops,
3261                            void *data)
3262 {
3263         return (lprocfs_seq_create(dev->obd_proc_entry, name,
3264                                    mode, seq_fops, data));
3265 }
3266 EXPORT_SYMBOL(lprocfs_obd_seq_create);
3267
3268 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
3269 {
3270         if (value >= OBD_HIST_MAX)
3271                 value = OBD_HIST_MAX - 1;
3272
3273         spin_lock(&oh->oh_lock);
3274         oh->oh_buckets[value]++;
3275         spin_unlock(&oh->oh_lock);
3276 }
3277 EXPORT_SYMBOL(lprocfs_oh_tally);
3278
3279 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
3280 {
3281         unsigned int val = 0;
3282
3283         if (likely(value != 0))
3284                 val = min(fls(value - 1), OBD_HIST_MAX);
3285
3286         lprocfs_oh_tally(oh, val);
3287 }
3288 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
3289
3290 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
3291 {
3292         unsigned long ret = 0;
3293         int i;
3294
3295         for (i = 0; i < OBD_HIST_MAX; i++)
3296                 ret +=  oh->oh_buckets[i];
3297         return ret;
3298 }
3299 EXPORT_SYMBOL(lprocfs_oh_sum);
3300
3301 void lprocfs_oh_clear(struct obd_histogram *oh)
3302 {
3303         spin_lock(&oh->oh_lock);
3304         memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
3305         spin_unlock(&oh->oh_lock);
3306 }
3307 EXPORT_SYMBOL(lprocfs_oh_clear);
3308
3309 #ifdef HAVE_SERVER_SUPPORT
3310 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
3311 {
3312         struct obd_device *obd = m->private;
3313         int c = 0;
3314
3315         if (obd == NULL)
3316                 return 0;
3317
3318         c += cfs_hash_debug_header_seq(m);
3319         c += cfs_hash_debug_str_seq(obd->obd_uuid_hash, m);
3320         c += cfs_hash_debug_str_seq(obd->obd_nid_hash, m);
3321         c += cfs_hash_debug_str_seq(obd->obd_nid_stats_hash, m);
3322         return c;
3323 }
3324 EXPORT_SYMBOL(lprocfs_hash_seq_show);
3325
3326 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
3327 {
3328         struct obd_device *obd = m->private;
3329
3330         LASSERT(obd != NULL);
3331
3332         seq_printf(m, "status: \n");
3333         if (obd->obd_max_recoverable_clients == 0) {
3334                 seq_printf(m, "INACTIVE\n");
3335                 goto out;
3336         }
3337
3338         /* sampled unlocked, but really... */
3339         if (obd->obd_recovering == 0) {
3340                 seq_printf(m, "COMPLETE\n");
3341                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
3342                 seq_printf(m, "recovery_duration: %lu\n",
3343                                 obd->obd_recovery_end - obd->obd_recovery_start);
3344                 /* Number of clients that have completed recovery */
3345                 seq_printf(m, "completed_clients: %d/%d\n",
3346                                 obd->obd_max_recoverable_clients -
3347                                 obd->obd_stale_clients,
3348                                 obd->obd_max_recoverable_clients);
3349                 seq_printf(m, "replayed_requests: %d\n",
3350                                 obd->obd_replayed_requests);
3351                 seq_printf(m, "last_transno: "LPD64"\n",
3352                                 obd->obd_next_recovery_transno - 1);
3353                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
3354                                 "ENABLED" : "DISABLED");
3355                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
3356                                 "DISABLED" : "ENABLED");
3357                 goto out;
3358         }
3359
3360         seq_printf(m, "RECOVERING\n");
3361         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
3362         seq_printf(m, "time_remaining: %lu\n",
3363                         cfs_time_current_sec() >=
3364                         obd->obd_recovery_start +
3365                         obd->obd_recovery_timeout ? 0 :
3366                         obd->obd_recovery_start +
3367                         obd->obd_recovery_timeout -
3368                         cfs_time_current_sec());
3369         seq_printf(m, "connected_clients: %d/%d\n",
3370                         atomic_read(&obd->obd_connected_clients),
3371                         obd->obd_max_recoverable_clients);
3372         /* Number of clients that have completed recovery */
3373         seq_printf(m, "req_replay_clients: %d\n",
3374                         atomic_read(&obd->obd_req_replay_clients));
3375         seq_printf(m, "lock_repay_clients: %d\n",
3376                         atomic_read(&obd->obd_lock_replay_clients));
3377         seq_printf(m, "completed_clients: %d\n",
3378                         atomic_read(&obd->obd_connected_clients) -
3379                         atomic_read(&obd->obd_lock_replay_clients));
3380         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
3381         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
3382         seq_printf(m, "queued_requests: %d\n",
3383                         obd->obd_requests_queued_for_recovery);
3384         seq_printf(m, "next_transno: "LPD64"\n",
3385                         obd->obd_next_recovery_transno);
3386 out:
3387         return 0;
3388 }
3389 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
3390
3391 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
3392 {
3393         struct obd_device *obd = m->private;
3394
3395         LASSERT(obd != NULL);
3396         return seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
3397 }
3398 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
3399
3400 ssize_t
3401 lprocfs_ir_factor_seq_write(struct file *file, const char *buffer,
3402                                 size_t count, loff_t *off)
3403 {
3404         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
3405         int val, rc;
3406
3407         LASSERT(obd != NULL);
3408         rc = lprocfs_write_helper(buffer, count, &val);
3409         if (rc)
3410                 return rc;
3411
3412         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
3413                 return -EINVAL;
3414
3415         obd->obd_recovery_ir_factor = val;
3416         return count;
3417 }
3418 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
3419
3420 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
3421 {
3422         struct obd_device *obd = m->private;
3423
3424         LASSERT(obd != NULL);
3425         return seq_printf(m, "%d\n", obd->obd_recovery_timeout);
3426 }
3427 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
3428
3429 ssize_t
3430 lprocfs_recovery_time_soft_seq_write(struct file *file, const char *buffer,
3431                                         size_t count, loff_t *off)
3432 {
3433         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
3434         int val, rc;
3435
3436         LASSERT(obd != NULL);
3437         rc = lprocfs_write_helper(buffer, count, &val);
3438         if (rc)
3439                 return rc;
3440
3441         obd->obd_recovery_timeout = val;
3442         return count;
3443 }
3444 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
3445
3446 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
3447 {
3448         struct obd_device *obd = m->private;
3449
3450         LASSERT(obd != NULL);
3451         return seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
3452 }
3453 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
3454
3455 ssize_t
3456 lprocfs_recovery_time_hard_seq_write(struct file *file, const char *buffer,
3457                                         size_t count, loff_t *off)
3458 {
3459         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
3460         int val, rc;
3461
3462         LASSERT(obd != NULL);
3463         rc = lprocfs_write_helper(buffer, count, &val);
3464         if (rc)
3465                 return rc;
3466
3467         obd->obd_recovery_time_hard = val;
3468         return count;
3469 }
3470 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
3471
3472 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
3473 {
3474         struct obd_device *obd = m->private;
3475         struct obd_device_target *target = &obd->u.obt;
3476
3477         LASSERT(obd != NULL);
3478         LASSERT(target->obt_magic == OBT_MAGIC);
3479         return seq_printf(m, "%u\n", obd->u.obt.obt_instance);
3480 }
3481 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
3482
3483 #ifndef HAVE_ONLY_PROCFS_SEQ
3484 int lprocfs_obd_rd_hash(char *page, char **start, off_t off,
3485                         int count, int *eof, void *data)
3486 {
3487         struct obd_device *obd = data;
3488         int c = 0;
3489
3490         if (obd == NULL)
3491                 return 0;
3492
3493         c += cfs_hash_debug_header(page, count);
3494         c += cfs_hash_debug_str(obd->obd_uuid_hash, page + c, count - c);
3495         c += cfs_hash_debug_str(obd->obd_nid_hash, page + c, count - c);
3496         c += cfs_hash_debug_str(obd->obd_nid_stats_hash, page+c, count-c);
3497
3498         return c;
3499 }
3500 EXPORT_SYMBOL(lprocfs_obd_rd_hash);
3501
3502 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
3503                                    int count, int *eof, void *data)
3504 {
3505         struct obd_device *obd = data;
3506         int len = 0, size;
3507
3508         LASSERT(obd != NULL);
3509         LASSERT(count >= 0);
3510
3511         /* Set start of user data returned to
3512            page + off since the user may have
3513            requested to read much smaller than
3514            what we need to read */
3515         *start = page + off;
3516
3517         /*
3518          * We know we are allocated a page here.
3519          * Also we know that this function will
3520          * not need to write more than a page
3521          * so we can truncate at PAGE_CACHE_SIZE.
3522          */
3523         size = min(count + (int)off + 1, (int)PAGE_CACHE_SIZE);
3524
3525         /* Initialize the page */
3526         memset(page, 0, size);
3527
3528         if (lprocfs_obd_snprintf(&page, size, &len, "status: ") <= 0)
3529                 goto out;
3530         if (obd->obd_max_recoverable_clients == 0) {
3531                 if (lprocfs_obd_snprintf(&page, size, &len, "INACTIVE\n") <= 0)
3532                         goto out;
3533
3534                 goto fclose;
3535         }
3536
3537         /* sampled unlocked, but really... */
3538         if (obd->obd_recovering == 0) {
3539                 if (lprocfs_obd_snprintf(&page, size, &len, "COMPLETE\n") <= 0)
3540                         goto out;
3541                 if (lprocfs_obd_snprintf(&page, size, &len,
3542                                          "recovery_start: %lu\n",
3543                                          obd->obd_recovery_start) <= 0)
3544                         goto out;
3545                 if (lprocfs_obd_snprintf(&page, size, &len,
3546                                          "recovery_duration: %lu\n",
3547                                          obd->obd_recovery_end -
3548                                          obd->obd_recovery_start) <= 0)
3549                         goto out;
3550                 /* Number of clients that have completed recovery */
3551                 if (lprocfs_obd_snprintf(&page, size, &len,
3552                                          "completed_clients: %d/%d\n",
3553                                          obd->obd_max_recoverable_clients -
3554                                          obd->obd_stale_clients,
3555                                          obd->obd_max_recoverable_clients) <= 0)
3556                         goto out;
3557                 if (lprocfs_obd_snprintf(&page, size, &len,
3558                                          "replayed_requests: %d\n",
3559                                          obd->obd_replayed_requests) <= 0)
3560                         goto out;
3561                 if (lprocfs_obd_snprintf(&page, size, &len,
3562                                          "last_transno: "LPD64"\n",
3563                                          obd->obd_next_recovery_transno - 1)<=0)
3564                         goto out;
3565                 if (lprocfs_obd_snprintf(&page, size, &len, "VBR: %s\n",
3566                                          obd->obd_version_recov ?
3567                                          "ENABLED" : "DISABLED") <=0)
3568                         goto out;
3569                 if (lprocfs_obd_snprintf(&page, size, &len, "IR: %s\n",
3570                                          obd->obd_no_ir ?
3571                                          "DISABLED" : "ENABLED") <= 0)
3572                         goto out;
3573                 goto fclose;
3574         }
3575
3576         if (lprocfs_obd_snprintf(&page, size, &len, "RECOVERING\n") <= 0)
3577                 goto out;
3578         if (lprocfs_obd_snprintf(&page, size, &len, "recovery_start: %lu\n",
3579                                  obd->obd_recovery_start) <= 0)
3580                 goto out;
3581         if (lprocfs_obd_snprintf(&page, size, &len, "time_remaining: %lu\n",
3582                                  cfs_time_current_sec() >=
3583                                  obd->obd_recovery_start +
3584                                  obd->obd_recovery_timeout ? 0 :
3585                                  obd->obd_recovery_start +
3586                                  obd->obd_recovery_timeout -
3587                                  cfs_time_current_sec()) <= 0)
3588                 goto out;
3589         if (lprocfs_obd_snprintf(&page, size, &len,"connected_clients: %d/%d\n",
3590                                  atomic_read(&obd->obd_connected_clients),
3591                                  obd->obd_max_recoverable_clients) <= 0)
3592                 goto out;
3593         /* Number of clients that have completed recovery */
3594         if (lprocfs_obd_snprintf(&page, size, &len,"req_replay_clients: %d\n",
3595                                  atomic_read(&obd->obd_req_replay_clients))
3596                 <= 0)
3597                 goto out;
3598         if (lprocfs_obd_snprintf(&page, size, &len,"lock_repay_clients: %d\n",
3599                                  atomic_read(&obd->obd_lock_replay_clients))
3600                 <=0)
3601                 goto out;
3602         if (lprocfs_obd_snprintf(&page, size, &len,"completed_clients: %d\n",
3603                                  atomic_read(&obd->obd_connected_clients) -
3604                                  atomic_read(&obd->obd_lock_replay_clients))
3605                 <=0)
3606                 goto out;
3607         if (lprocfs_obd_snprintf(&page, size, &len,"evicted_clients: %d\n",
3608                                  obd->obd_stale_clients) <= 0)
3609                 goto out;
3610         if (lprocfs_obd_snprintf(&page, size, &len,"replayed_requests: %d\n",
3611                                  obd->obd_replayed_requests) <= 0)
3612                 goto out;
3613         if (lprocfs_obd_snprintf(&page, size, &len, "queued_requests: %d\n",
3614                                  obd->obd_requests_queued_for_recovery) <= 0)
3615                 goto out;
3616
3617         if (lprocfs_obd_snprintf(&page, size, &len, "next_transno: "LPD64"\n",
3618                                  obd->obd_next_recovery_transno) <= 0)
3619                 goto out;
3620
3621 fclose:
3622         *eof = 1;
3623 out:
3624         return min(count, len - (int)off);
3625 }
3626 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_status);
3627
3628 int lprocfs_obd_rd_ir_factor(char *page, char **start, off_t off,
3629                              int count, int *eof, void *data)
3630 {
3631         struct obd_device *obd = (struct obd_device *)data;
3632         LASSERT(obd != NULL);
3633
3634         return snprintf(page, count, "%d\n",
3635                         obd->obd_recovery_ir_factor);
3636 }
3637 EXPORT_SYMBOL(lprocfs_obd_rd_ir_factor);
3638
3639 int lprocfs_obd_wr_ir_factor(struct file *file, const char *buffer,
3640                              unsigned long count, void *data)
3641 {
3642         struct obd_device *obd = (struct obd_device *)data;
3643         int val, rc;
3644         LASSERT(obd != NULL);
3645
3646         rc = lprocfs_write_helper(buffer, count, &val);
3647         if (rc)
3648                 return rc;
3649
3650         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
3651                 return -EINVAL;
3652
3653         obd->obd_recovery_ir_factor = val;
3654         return count;
3655 }
3656 EXPORT_SYMBOL(lprocfs_obd_wr_ir_factor);
3657
3658 int lprocfs_obd_rd_recovery_time_soft(char *page, char **start, off_t off,
3659                                       int count, int *eof, void *data)
3660 {
3661         struct obd_device *obd = (struct obd_device *)data;
3662         LASSERT(obd != NULL);
3663
3664         return snprintf(page, count, "%d\n",
3665                         obd->obd_recovery_timeout);
3666 }
3667 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_time_soft);
3668
3669 int lprocfs_obd_wr_recovery_time_soft(struct file *file, const char *buffer,
3670                                       unsigned long count, void *data)
3671 {
3672         struct obd_device *obd = (struct obd_device *)data;
3673         int val, rc;
3674         LASSERT(obd != NULL);
3675
3676         rc = lprocfs_write_helper(buffer, count, &val);
3677         if (rc)
3678                 return rc;
3679
3680         obd->obd_recovery_timeout = val;
3681         return count;
3682 }
3683 EXPORT_SYMBOL(lprocfs_obd_wr_recovery_time_soft);
3684
3685 int lprocfs_obd_rd_recovery_time_hard(char *page, char **start, off_t off,
3686                                       int count, int *eof, void *data)
3687 {
3688         struct obd_device *obd = data;
3689         LASSERT(obd != NULL);
3690
3691         return snprintf(page, count, "%u\n", obd->obd_recovery_time_hard);
3692 }
3693 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_time_hard);
3694
3695 int lprocfs_obd_wr_recovery_time_hard(struct file *file, const char *buffer,
3696                                       unsigned long count, void *data)
3697 {
3698         struct obd_device *obd = data;
3699         int val, rc;
3700         LASSERT(obd != NULL);
3701
3702         rc = lprocfs_write_helper(buffer, count, &val);
3703         if (rc)
3704                 return rc;
3705
3706         obd->obd_recovery_time_hard = val;
3707         return count;
3708 }
3709 EXPORT_SYMBOL(lprocfs_obd_wr_recovery_time_hard);
3710
3711 int lprocfs_target_rd_instance(char *page, char **start, off_t off,
3712                                int count, int *eof, void *data)
3713 {
3714         struct obd_device *obd = (struct obd_device *)data;
3715         struct obd_device_target *target = &obd->u.obt;
3716
3717         LASSERT(obd != NULL);
3718         LASSERT(target->obt_magic == OBT_MAGIC);
3719         *eof = 1;
3720         return snprintf(page, count, "%u\n", obd->u.obt.obt_instance);
3721 }
3722 EXPORT_SYMBOL(lprocfs_target_rd_instance);
3723 #endif /* HAVE_ONLY_PROCFS_SEQ */
3724 #endif /* HAVE_SERVER_SUPPORT */
3725
3726 int lprocfs_obd_rd_max_pages_per_rpc(char *page, char **start, off_t off,
3727                                      int count, int *eof, void *data)
3728 {
3729         struct obd_device *dev = data;
3730         struct client_obd *cli = &dev->u.cli;
3731         int rc;
3732
3733         client_obd_list_lock(&cli->cl_loi_list_lock);
3734         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
3735         client_obd_list_unlock(&cli->cl_loi_list_lock);
3736         return rc;
3737 }
3738 EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
3739
3740 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
3741 {
3742         struct obd_device *dev = data;
3743         struct client_obd *cli = &dev->u.cli;
3744         int rc;
3745
3746         client_obd_list_lock(&cli->cl_loi_list_lock);
3747         rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
3748         client_obd_list_unlock(&cli->cl_loi_list_lock);
3749         return rc;
3750 }
3751 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
3752 #endif /* LPROCFS*/