lustre/obdclass/lprocfs_status_server.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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2014, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/obdclass/lprocfs_status_server.c
  33  */
  34
  35 #define DEBUG_SUBSYSTEM S_CLASS
  36
  37 #include <linux/kobject.h>
  38 #include <linux/sysfs.h>
  39
  40 #include <obd_class.h>
  41 #include <lprocfs_status.h>
  42 #include <lustre_nodemap.h>
  43
  44 #define MAX_STRING_SIZE 128
  45
  46 struct dentry *ldebugfs_add_symlink(const char *name, const char *target,
  47                                     const char *format, ...)
  48 {
  49         struct dentry *entry = NULL;
  50         struct dentry *parent;
  51         struct qstr dname;
  52         va_list ap;
  53         char *dest;
  54
  55         if (!target || !format)
  56                 return NULL;
  57
  58         dname.name = target;
  59         dname.len = strlen(dname.name);
  60         dname.hash = ll_full_name_hash(parent, dname.name, dname.len);
  61         parent = d_lookup(debugfs_lustre_root, &dname);
  62         if (!parent)
  63                 return NULL;
  64
  65         OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
  66         if (!dest)
  67                 goto no_entry;
  68
  69         va_start(ap, format);
  70         vsnprintf(dest, MAX_STRING_SIZE, format, ap);
  71         va_end(ap);
  72
  73         entry = debugfs_create_symlink(name, parent, dest);
  74         if (IS_ERR_OR_NULL(entry)) {
  75                 CERROR("LdebugFS: Could not create symbolic link from %s to %s\n",
  76                        name, dest);
  77                 entry = NULL;
  78         }
  79
  80         OBD_FREE(dest, MAX_STRING_SIZE + 1);
  81 no_entry:
  82         dput(parent);
  83         return entry;
  84 }
  85 EXPORT_SYMBOL(ldebugfs_add_symlink);
  86
  87 #ifdef CONFIG_PROC_FS
  88
  89 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
  90 {
  91         struct obd_device *obd = PDE_DATA(file_inode(f));
  92
  93         atomic_inc(&obd->obd_evict_inprogress);
  94         return 0;
  95 }
  96
  97 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
  98 {
  99         struct obd_device *obd = PDE_DATA(file_inode(f));
 100
 101         atomic_dec(&obd->obd_evict_inprogress);
 102         wake_up(&obd->obd_evict_inprogress_waitq);
 103
 104         return 0;
 105 }
 106
 107 #define BUFLEN (UUID_MAX + 5)
 108
 109 ssize_t
 110 lprocfs_evict_client_seq_write(struct file *file, const char __user *buffer,
 111                                size_t count, loff_t *off)
 112 {
 113         struct seq_file *m = file->private_data;
 114         struct obd_device *obd = m->private;
 115         char *tmpbuf, *kbuf;
 116
 117         OBD_ALLOC(kbuf, BUFLEN);
 118         if (kbuf == NULL)
 119                 return -ENOMEM;
 120
 121         /*
 122          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
 123          * bytes into kbuf, to ensure that the string is NUL-terminated.
 124          * UUID_MAX should include a trailing NUL already.
 125          */
 126         if (copy_from_user(kbuf, buffer,
 127                            min_t(unsigned long, BUFLEN - 1, count))) {
 128                 count = -EFAULT;
 129                 goto out;
 130         }
 131         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
 132         class_incref(obd, __func__, current);
 133
 134         if (strncmp(tmpbuf, "nid:", 4) == 0)
 135                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 136         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 137                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 138         else
 139                 obd_export_evict_by_uuid(obd, tmpbuf);
 140
 141         class_decref(obd, __func__, current);
 142
 143 out:
 144         OBD_FREE(kbuf, BUFLEN);
 145         return count;
 146 }
 147 EXPORT_SYMBOL(lprocfs_evict_client_seq_write);
 148
 149 #undef BUFLEN
 150
 151 int lprocfs_num_exports_seq_show(struct seq_file *m, void *data)
 152 {
 153         struct obd_device *obd = data;
 154
 155         LASSERT(obd != NULL);
 156         seq_printf(m, "%u\n", obd->obd_num_exports);
 157         return 0;
 158 }
 159 EXPORT_SYMBOL(lprocfs_num_exports_seq_show);
 160
 161 static int obd_export_flags2str(struct obd_export *exp, struct seq_file *m)
 162 {
 163         bool first = true;
 164
 165         flag2str(exp, failed);
 166         flag2str(exp, in_recovery);
 167         flag2str(exp, disconnected);
 168         flag2str(exp, connecting);
 169
 170         return 0;
 171 }
 172
 173 static int
 174 lprocfs_exp_print_export_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 175                              struct hlist_node *hnode, void *cb_data)
 176 {
 177         struct seq_file         *m = cb_data;
 178         struct obd_export       *exp = cfs_hash_object(hs, hnode);
 179         struct obd_device       *obd;
 180         struct obd_connect_data *ocd;
 181
 182         LASSERT(exp != NULL);
 183         if (exp->exp_nid_stats == NULL)
 184                 goto out;
 185         obd = exp->exp_obd;
 186         ocd = &exp->exp_connect_data;
 187
 188         seq_printf(m, "%s:\n"
 189                    "    name: %s\n"
 190                    "    client: %s\n"
 191                    "    connect_flags: [ ",
 192                    obd_uuid2str(&exp->exp_client_uuid),
 193                    obd->obd_name,
 194                    obd_export_nid2str(exp));
 195         obd_connect_seq_flags2str(m, ocd->ocd_connect_flags,
 196                                   ocd->ocd_connect_flags2, ", ");
 197         seq_printf(m, " ]\n");
 198         obd_connect_data_seqprint(m, ocd);
 199         seq_printf(m, "    export_flags: [ ");
 200         obd_export_flags2str(exp, m);
 201         seq_printf(m, " ]\n");
 202
 203 out:
 204         return 0;
 205 }
 206
 207 /**
 208  * RPC connections are composed of an import and an export. Using the
 209  * lctl utility we can extract important information about the state.
 210  * The lprocfs_exp_export_seq_show routine displays the state information
 211  * for the export.
 212  *
 213  * \param[in] m         seq file
 214  * \param[in] data      unused
 215  *
 216  * \retval              0 on success
 217  *
 218  * The format of the export state information is like:
 219  * a793e354-49c0-aa11-8c4f-a4f2b1a1a92b:
 220  *     name: MGS
 221  *     client: 10.211.55.10@tcp
 222  *     connect_flags: [ version, barrier, adaptive_timeouts, ... ]
 223  *     connect_data:
 224  *        flags: 0x2000011005002020
 225  *        instance: 0
 226  *        target_version: 2.10.51.0
 227  *        export_flags: [ ... ]
 228  *
 229  */
 230 static int lprocfs_exp_export_seq_show(struct seq_file *m, void *data)
 231 {
 232         struct nid_stat *stats = m->private;
 233         struct obd_device *obd = stats->nid_obd;
 234
 235         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 236                               lprocfs_exp_print_export_seq, m);
 237         return 0;
 238 }
 239 LPROC_SEQ_FOPS_RO(lprocfs_exp_export);
 240
 241 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
 242 {
 243         CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
 244                client_stat->nid_proc, client_stat->nid_stats);
 245
 246         LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
 247                  "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
 248                  atomic_read(&client_stat->nid_exp_ref_count));
 249
 250         if (client_stat->nid_proc)
 251                 lprocfs_remove(&client_stat->nid_proc);
 252
 253         if (client_stat->nid_stats)
 254                 lprocfs_free_stats(&client_stat->nid_stats);
 255
 256         if (client_stat->nid_ldlm_stats)
 257                 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
 258
 259         OBD_FREE_PTR(client_stat);
 260         return;
 261 }
 262
 263 void lprocfs_free_per_client_stats(struct obd_device *obd)
 264 {
 265         struct cfs_hash *hash = obd->obd_nid_stats_hash;
 266         struct nid_stat *stat;
 267         ENTRY;
 268
 269         /* we need extra list - because hash_exit called to early */
 270         /* not need locking because all clients is died */
 271         while (!list_empty(&obd->obd_nid_stats)) {
 272                 stat = list_entry(obd->obd_nid_stats.next,
 273                                   struct nid_stat, nid_list);
 274                 list_del_init(&stat->nid_list);
 275                 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
 276                 lprocfs_free_client_stats(stat);
 277         }
 278         EXIT;
 279 }
 280 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
 281
 282 static int
 283 lprocfs_exp_print_uuid_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 284                            struct hlist_node *hnode, void *cb_data)
 285 {
 286         struct seq_file *m = cb_data;
 287         struct obd_export *exp = cfs_hash_object(hs, hnode);
 288
 289         if (exp->exp_nid_stats != NULL)
 290                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
 291         return 0;
 292 }
 293
 294 static int
 295 lprocfs_exp_print_nodemap_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 296                               struct hlist_node *hnode, void *cb_data)
 297 {
 298         struct seq_file *m = cb_data;
 299         struct obd_export *exp = cfs_hash_object(hs, hnode);
 300         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
 301
 302         if (nodemap != NULL)
 303                 seq_printf(m, "%s\n", nodemap->nm_name);
 304         return 0;
 305 }
 306
 307 static int
 308 lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
 309 {
 310         struct nid_stat *stats = m->private;
 311         struct obd_device *obd = stats->nid_obd;
 312
 313         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 314                               lprocfs_exp_print_nodemap_seq, m);
 315         return 0;
 316 }
 317 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
 318
 319 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
 320 {
 321         struct nid_stat *stats = m->private;
 322         struct obd_device *obd = stats->nid_obd;
 323
 324         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 325                                 lprocfs_exp_print_uuid_seq, m);
 326         return 0;
 327 }
 328 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
 329
 330 static int
 331 lprocfs_exp_print_hash_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 332                            struct hlist_node *hnode, void *cb_data)
 333
 334 {
 335         struct seq_file *m = cb_data;
 336         struct obd_export *exp = cfs_hash_object(hs, hnode);
 337
 338         if (exp->exp_lock_hash != NULL) {
 339                 cfs_hash_debug_header(m);
 340                 cfs_hash_debug_str(hs, m);
 341         }
 342         return 0;
 343 }
 344
 345 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
 346 {
 347         struct nid_stat *stats = m->private;
 348         struct obd_device *obd = stats->nid_obd;
 349
 350         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 351                                 lprocfs_exp_print_hash_seq, m);
 352         return 0;
 353 }
 354 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
 355
 356 int lprocfs_exp_print_replydata_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 357                                     struct hlist_node *hnode, void *cb_data)
 358
 359 {
 360         struct obd_export *exp = cfs_hash_object(hs, hnode);
 361         struct seq_file *m = cb_data;
 362         struct tg_export_data *ted = &exp->exp_target_data;
 363
 364         seq_printf(m, "reply_cnt: %d\n"
 365                    "reply_max: %d\n"
 366                    "reply_released_by_xid: %d\n"
 367                    "reply_released_by_tag: %d\n\n",
 368                    ted->ted_reply_cnt,
 369                    ted->ted_reply_max,
 370                    ted->ted_release_xid,
 371                    ted->ted_release_tag);
 372         return 0;
 373 }
 374
 375 int lprocfs_exp_replydata_seq_show(struct seq_file *m, void *data)
 376 {
 377         struct nid_stat *stats = m->private;
 378         struct obd_device *obd = stats->nid_obd;
 379
 380         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 381                                 lprocfs_exp_print_replydata_seq, m);
 382         return 0;
 383 }
 384 LPROC_SEQ_FOPS_RO(lprocfs_exp_replydata);
 385
 386 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 387 {
 388         seq_puts(m, "Write into this file to clear all nid stats and stale nid entries\n");
 389         return 0;
 390 }
 391 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 392
 393 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 394 {
 395         struct nid_stat *stat = obj;
 396         ENTRY;
 397
 398         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 399         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 400                 /* object has only hash references. */
 401                 spin_lock(&stat->nid_obd->obd_nid_lock);
 402                 list_move(&stat->nid_list, data);
 403                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 404                 RETURN(1);
 405         }
 406         /* we has reference to object - only clear data*/
 407         if (stat->nid_stats)
 408                 lprocfs_clear_stats(stat->nid_stats);
 409
 410         RETURN(0);
 411 }
 412
 413 ssize_t
 414 lprocfs_nid_stats_clear_seq_write(struct file *file, const char __user *buffer,
 415                                         size_t count, loff_t *off)
 416 {
 417         struct seq_file *m = file->private_data;
 418         struct obd_device *obd = m->private;
 419         struct nid_stat *client_stat;
 420         struct list_head free_list;
 421
 422         INIT_LIST_HEAD(&free_list);
 423         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 424                           lprocfs_nid_stats_clear_write_cb, &free_list);
 425
 426         while (!list_empty(&free_list)) {
 427                 client_stat = list_entry(free_list.next, struct nid_stat,
 428                                          nid_list);
 429                 list_del_init(&client_stat->nid_list);
 430                 lprocfs_free_client_stats(client_stat);
 431         }
 432         return count;
 433 }
 434 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 435
 436 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
 437 {
 438         struct nid_stat *new_stat, *old_stat;
 439         struct obd_device *obd = NULL;
 440         struct proc_dir_entry *entry;
 441         char nidstr[LNET_NIDSTR_SIZE];
 442         int rc = 0;
 443         ENTRY;
 444
 445         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 446             !exp->exp_obd->obd_nid_stats_hash)
 447                 RETURN(-EINVAL);
 448
 449         /* not test against zero because eric say:
 450          * You may only test nid against another nid, or LNET_NID_ANY.
 451          * Anything else is nonsense.*/
 452         if (nid == NULL || *nid == LNET_NID_ANY)
 453                 RETURN(-EALREADY);
 454
 455         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
 456
 457         spin_lock(&exp->exp_lock);
 458         if (exp->exp_nid_stats != NULL) {
 459                 spin_unlock(&exp->exp_lock);
 460                 RETURN(-EALREADY);
 461         }
 462         spin_unlock(&exp->exp_lock);
 463
 464         obd = exp->exp_obd;
 465
 466         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 467
 468         OBD_ALLOC_PTR(new_stat);
 469         if (new_stat == NULL)
 470                 RETURN(-ENOMEM);
 471
 472         new_stat->nid     = *nid;
 473         new_stat->nid_obd = exp->exp_obd;
 474         /* we need set default refcount to 1 to balance obd_disconnect */
 475         atomic_set(&new_stat->nid_exp_ref_count, 1);
 476
 477         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 478                                            nid, &new_stat->nid_hash);
 479         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 480                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
 481
 482         /* Return -EALREADY here so that we know that the /proc
 483          * entry already has been created */
 484         if (old_stat != new_stat) {
 485                 spin_lock(&exp->exp_lock);
 486                 if (exp->exp_nid_stats) {
 487                         LASSERT(exp->exp_nid_stats == old_stat);
 488                         nidstat_putref(exp->exp_nid_stats);
 489                 }
 490                 exp->exp_nid_stats = old_stat;
 491                 spin_unlock(&exp->exp_lock);
 492                 GOTO(destroy_new, rc = -EALREADY);
 493         }
 494         /* not found - create */
 495         new_stat->nid_proc = lprocfs_register(nidstr,
 496                                               obd->obd_proc_exports_entry,
 497                                               NULL, NULL);
 498
 499         if (IS_ERR(new_stat->nid_proc)) {
 500                 rc = PTR_ERR(new_stat->nid_proc);
 501                 new_stat->nid_proc = NULL;
 502                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 503                        obd->obd_name, nidstr, rc);
 504                 GOTO(destroy_new_ns, rc);
 505         }
 506
 507         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 508                                    &lprocfs_exp_nodemap_fops);
 509         if (IS_ERR(entry)) {
 510                 rc = PTR_ERR(entry);
 511                 CWARN("%s: error adding the nodemap file: rc = %d\n",
 512                       obd->obd_name, rc);
 513                 GOTO(destroy_new_ns, rc);
 514         }
 515
 516         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 517                                    &lprocfs_exp_uuid_fops);
 518         if (IS_ERR(entry)) {
 519                 rc = PTR_ERR(entry);
 520                 CWARN("%s: error adding the NID stats file: rc = %d\n",
 521                       obd->obd_name, rc);
 522                 GOTO(destroy_new_ns, rc);
 523         }
 524
 525         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 526                                    &lprocfs_exp_hash_fops);
 527         if (IS_ERR(entry)) {
 528                 rc = PTR_ERR(entry);
 529                 CWARN("%s: error adding the hash file: rc = %d\n",
 530                       obd->obd_name, rc);
 531                 GOTO(destroy_new_ns, rc);
 532         }
 533
 534         entry = lprocfs_add_simple(new_stat->nid_proc, "export",
 535                                    new_stat, &lprocfs_exp_export_fops);
 536         if (IS_ERR(entry)) {
 537                 rc = PTR_ERR(entry);
 538                 CWARN("%s: error adding the export file: rc = %d\n",
 539                       obd->obd_name, rc);
 540                 GOTO(destroy_new_ns, rc);
 541         }
 542
 543         entry = lprocfs_add_simple(new_stat->nid_proc, "reply_data", new_stat,
 544                                    &lprocfs_exp_replydata_fops);
 545         if (IS_ERR(entry)) {
 546                 rc = PTR_ERR(entry);
 547                 CWARN("%s: error adding the reply_data file: rc = %d\n",
 548                       obd->obd_name, rc);
 549                 GOTO(destroy_new_ns, rc);
 550         }
 551
 552         spin_lock(&exp->exp_lock);
 553         exp->exp_nid_stats = new_stat;
 554         spin_unlock(&exp->exp_lock);
 555
 556         /* protect competitive add to list, not need locking on destroy */
 557         spin_lock(&obd->obd_nid_lock);
 558         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 559         spin_unlock(&obd->obd_nid_lock);
 560
 561         RETURN(0);
 562
 563 destroy_new_ns:
 564         if (new_stat->nid_proc != NULL)
 565                 lprocfs_remove(&new_stat->nid_proc);
 566         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 567
 568 destroy_new:
 569         nidstat_putref(new_stat);
 570         OBD_FREE_PTR(new_stat);
 571         RETURN(rc);
 572 }
 573 EXPORT_SYMBOL(lprocfs_exp_setup);
 574
 575 int lprocfs_exp_cleanup(struct obd_export *exp)
 576 {
 577         struct nid_stat *stat = exp->exp_nid_stats;
 578
 579         if (!stat || !exp->exp_obd)
 580                 RETURN(0);
 581
 582         nidstat_putref(exp->exp_nid_stats);
 583         exp->exp_nid_stats = NULL;
 584
 585         return 0;
 586 }
 587
 588 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 589 do {                                                            \
 590         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 591         LASSERT(coffset < stats->ls_num);                       \
 592         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 593 } while (0)
 594
 595 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 596 {
 597         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 598         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 599         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 600         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 601         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 602         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 603         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 604         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 605         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 606         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 607         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 608         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 609         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 610         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 611         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 612         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 613         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 614         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 615         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 616         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 617         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 618         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 619         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 620         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 621         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 622         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 623         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 624         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 625         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 626         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 627         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 628         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 629         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 630         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 631         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 632         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 633         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 634         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 635
 636         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 637 }
 638 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 639
 640 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 641 {
 642         struct lprocfs_stats *stats;
 643         unsigned int num_stats;
 644         int rc, i;
 645
 646         LASSERT(obd->obd_stats == NULL);
 647         LASSERT(obd->obd_proc_entry != NULL);
 648         LASSERT(obd->obd_cntr_base == 0);
 649
 650         num_stats = NUM_OBD_STATS + num_private_stats;
 651         stats = lprocfs_alloc_stats(num_stats, 0);
 652         if (stats == NULL)
 653                 return -ENOMEM;
 654
 655         lprocfs_init_ops_stats(num_private_stats, stats);
 656
 657         for (i = num_private_stats; i < num_stats; i++) {
 658                 /* If this LBUGs, it is likely that an obd
 659                  * operation was added to struct obd_ops in
 660                  * <obd.h>, and that the corresponding line item
 661                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 662                  * is missing from the list above. */
 663                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 664                          "Missing obd_stat initializer obd_op "
 665                          "operation at offset %d.\n", i - num_private_stats);
 666         }
 667         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 668         if (rc < 0) {
 669                 lprocfs_free_stats(&stats);
 670         } else {
 671                 obd->obd_stats  = stats;
 672                 obd->obd_cntr_base = num_private_stats;
 673         }
 674         return rc;
 675 }
 676 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 677
 678 void lprocfs_free_obd_stats(struct obd_device *obd)
 679 {
 680         if (obd->obd_stats)
 681                 lprocfs_free_stats(&obd->obd_stats);
 682 }
 683 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 684
 685 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 686 {
 687         struct obd_device *obd = m->private;
 688
 689         if (obd == NULL)
 690                 return 0;
 691
 692         cfs_hash_debug_header(m);
 693         cfs_hash_debug_str(obd->obd_uuid_hash, m);
 694         cfs_hash_debug_str(obd->obd_nid_hash, m);
 695         cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 696         return 0;
 697 }
 698 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 699
 700 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 701 {
 702         struct obd_device *obd = m->private;
 703         struct target_distribute_txn_data *tdtd;
 704
 705         LASSERT(obd != NULL);
 706
 707         seq_printf(m, "status: ");
 708         if (obd->obd_max_recoverable_clients == 0) {
 709                 seq_printf(m, "INACTIVE\n");
 710                 goto out;
 711         }
 712
 713         /* sampled unlocked, but really... */
 714         if (obd->obd_recovering == 0) {
 715                 seq_printf(m, "COMPLETE\n");
 716                 seq_printf(m, "recovery_start: %lld\n",
 717                            (s64)obd->obd_recovery_start);
 718                 seq_printf(m, "recovery_duration: %lld\n",
 719                            obd->obd_recovery_end ?
 720                            obd->obd_recovery_end - obd->obd_recovery_start :
 721                            ktime_get_real_seconds() - obd->obd_recovery_start);
 722                 /* Number of clients that have completed recovery */
 723                 seq_printf(m, "completed_clients: %d/%d\n",
 724                            obd->obd_max_recoverable_clients -
 725                            obd->obd_stale_clients,
 726                            obd->obd_max_recoverable_clients);
 727                 seq_printf(m, "replayed_requests: %d\n",
 728                            obd->obd_replayed_requests);
 729                 seq_printf(m, "last_transno: %lld\n",
 730                            obd->obd_next_recovery_transno - 1);
 731                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 732                            "ENABLED" : "DISABLED");
 733                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 734                            "DISABLED" : "ENABLED");
 735                 goto out;
 736         }
 737
 738         tdtd = obd->u.obt.obt_lut->lut_tdtd;
 739         if (tdtd && tdtd->tdtd_show_update_logs_retrievers) {
 740                 char *buf;
 741                 int size = 0;
 742                 int count = 0;
 743
 744                 buf = tdtd->tdtd_show_update_logs_retrievers(
 745                         tdtd->tdtd_show_retrievers_cbdata,
 746                         &size, &count);
 747                 if (count > 0) {
 748                         seq_printf(m, "WAITING\n");
 749                         seq_printf(m, "non-ready MDTs: %s\n",
 750                                    buf ? buf : "unknown (not enough RAM)");
 751                         seq_printf(m, "recovery_start: %lld\n",
 752                                    (s64)obd->obd_recovery_start);
 753                         seq_printf(m, "time_waited: %lld\n",
 754                                    (s64)(ktime_get_real_seconds() -
 755                                          obd->obd_recovery_start));
 756                 }
 757
 758                 if (buf != NULL)
 759                         OBD_FREE(buf, size);
 760
 761                 if (likely(count > 0))
 762                         goto out;
 763         }
 764
 765         /* recovery won't start until the clients connect */
 766         if (obd->obd_recovery_start == 0) {
 767                 seq_printf(m, "WAITING_FOR_CLIENTS\n");
 768                 goto out;
 769         }
 770
 771         seq_printf(m, "RECOVERING\n");
 772         seq_printf(m, "recovery_start: %lld\n", (s64)obd->obd_recovery_start);
 773         seq_printf(m, "time_remaining: %lld\n",
 774                    ktime_get_real_seconds() >=
 775                    obd->obd_recovery_start +
 776                    obd->obd_recovery_timeout ? 0 :
 777                    (s64)(obd->obd_recovery_start +
 778                          obd->obd_recovery_timeout -
 779                          ktime_get_real_seconds()));
 780         seq_printf(m, "connected_clients: %d/%d\n",
 781                    atomic_read(&obd->obd_connected_clients),
 782                    obd->obd_max_recoverable_clients);
 783         /* Number of clients that have completed recovery */
 784         seq_printf(m, "req_replay_clients: %d\n",
 785                    atomic_read(&obd->obd_req_replay_clients));
 786         seq_printf(m, "lock_repay_clients: %d\n",
 787                    atomic_read(&obd->obd_lock_replay_clients));
 788         seq_printf(m, "completed_clients: %d\n",
 789                    atomic_read(&obd->obd_connected_clients) -
 790                    atomic_read(&obd->obd_lock_replay_clients));
 791         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 792         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 793         seq_printf(m, "queued_requests: %d\n",
 794                    obd->obd_requests_queued_for_recovery);
 795         seq_printf(m, "next_transno: %lld\n",
 796                    obd->obd_next_recovery_transno);
 797 out:
 798         return 0;
 799 }
 800 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 801
 802 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 803 {
 804         struct obd_device *obd = m->private;
 805
 806         LASSERT(obd != NULL);
 807         seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 808         return 0;
 809 }
 810 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 811
 812 ssize_t
 813 lprocfs_ir_factor_seq_write(struct file *file, const char __user *buffer,
 814                             size_t count, loff_t *off)
 815 {
 816         struct seq_file *m = file->private_data;
 817         struct obd_device *obd = m->private;
 818         int val;
 819         int rc;
 820
 821         LASSERT(obd != NULL);
 822         rc = kstrtoint_from_user(buffer, count, 10, &val);
 823         if (rc)
 824                 return rc;
 825
 826         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 827                 return -EINVAL;
 828
 829         obd->obd_recovery_ir_factor = val;
 830         return count;
 831 }
 832 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 833
 834 int lprocfs_checksum_dump_seq_show(struct seq_file *m, void *data)
 835 {
 836         struct obd_device *obd = m->private;
 837
 838         LASSERT(obd != NULL);
 839         seq_printf(m, "%d\n", obd->obd_checksum_dump);
 840         return 0;
 841 }
 842 EXPORT_SYMBOL(lprocfs_checksum_dump_seq_show);
 843
 844 ssize_t
 845 lprocfs_checksum_dump_seq_write(struct file *file, const char __user *buffer,
 846                             size_t count, loff_t *off)
 847 {
 848         struct seq_file *m = file->private_data;
 849         struct obd_device *obd = m->private;
 850         bool val;
 851         int rc;
 852
 853         LASSERT(obd != NULL);
 854         rc = kstrtobool_from_user(buffer, count, &val);
 855         if (rc)
 856                 return rc;
 857
 858         obd->obd_checksum_dump = val;
 859         return count;
 860 }
 861 EXPORT_SYMBOL(lprocfs_checksum_dump_seq_write);
 862
 863 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 864 {
 865         struct obd_device *obd = m->private;
 866
 867         LASSERT(obd != NULL);
 868         seq_printf(m, "%llu\n", obd->obd_recovery_timeout);
 869         return 0;
 870 }
 871 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 872
 873 ssize_t
 874 lprocfs_recovery_time_soft_seq_write(struct file *file,
 875                                      const char __user *buffer,
 876                                      size_t count, loff_t *off)
 877 {
 878         struct seq_file *m = file->private_data;
 879         struct obd_device *obd = m->private;
 880         unsigned int val;
 881         int rc;
 882
 883         LASSERT(obd != NULL);
 884         rc = kstrtouint_from_user(buffer, count, 0, &val);
 885         if (rc)
 886                 return rc;
 887
 888         obd->obd_recovery_timeout = val;
 889         return count;
 890 }
 891 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 892
 893 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 894 {
 895         struct obd_device *obd = m->private;
 896
 897         LASSERT(obd != NULL);
 898         seq_printf(m, "%lld\n", obd->obd_recovery_time_hard);
 899         return 0;
 900 }
 901 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 902
 903 ssize_t
 904 lprocfs_recovery_time_hard_seq_write(struct file *file,
 905                                      const char __user *buffer,
 906                                      size_t count, loff_t *off)
 907 {
 908         struct seq_file *m = file->private_data;
 909         struct obd_device *obd = m->private;
 910         unsigned int val;
 911         int rc;
 912
 913         LASSERT(obd != NULL);
 914         rc = kstrtouint_from_user(buffer, count, 0, &val);
 915         if (rc)
 916                 return rc;
 917
 918         obd->obd_recovery_time_hard = val;
 919         return count;
 920 }
 921 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 922
 923 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 924 {
 925         struct obd_device *obd = m->private;
 926         struct obd_device_target *target = &obd->u.obt;
 927
 928         LASSERT(obd != NULL);
 929         LASSERT(target->obt_magic == OBT_MAGIC);
 930         seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 931         return 0;
 932 }
 933 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 934
 935 #endif /* CONFIG_PROC_FS*/