lustre/osc/lproc_osc.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) 2011, 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 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <linux/version.h>
  35 #include <asm/statfs.h>
  36 #include <obd_cksum.h>
  37 #include <obd_class.h>
  38 #include <lprocfs_status.h>
  39 #include <linux/seq_file.h>
  40 #include <lustre_osc.h>
  41
  42 #include "osc_internal.h"
  43
  44 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  45                            char *buf)
  46 {
  47         struct obd_device *dev = container_of(kobj, struct obd_device,
  48                                               obd_kset.kobj);
  49         int rc;
  50
  51         LPROCFS_CLIMP_CHECK(dev);
  52         rc = sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return rc;
  55 }
  56
  57 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  58                             const char *buffer, size_t count)
  59 {
  60         struct obd_device *dev = container_of(kobj, struct obd_device,
  61                                               obd_kset.kobj);
  62         bool val;
  63         int rc;
  64
  65         rc = kstrtobool(buffer, &val);
  66         if (rc)
  67                 return rc;
  68
  69         /* opposite senses */
  70         if (dev->u.cli.cl_import->imp_deactive == val)
  71                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  72         else
  73                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  74                        (unsigned int)val);
  75
  76         return count;
  77 }
  78 LUSTRE_RW_ATTR(active);
  79
  80 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  81                                        struct attribute *attr,
  82                                        char *buf)
  83 {
  84         struct obd_device *dev = container_of(kobj, struct obd_device,
  85                                               obd_kset.kobj);
  86         struct client_obd *cli = &dev->u.cli;
  87         ssize_t len;
  88
  89         spin_lock(&cli->cl_loi_list_lock);
  90         len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
  91         spin_unlock(&cli->cl_loi_list_lock);
  92         return len;
  93 }
  94
  95 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  96                                         struct attribute *attr,
  97                                         const char *buffer,
  98                                         size_t count)
  99 {
 100         struct obd_device *dev = container_of(kobj, struct obd_device,
 101                                               obd_kset.kobj);
 102         struct client_obd *cli = &dev->u.cli;
 103         int adding, added, req_count;
 104         unsigned int val;
 105         int rc;
 106
 107         rc = kstrtouint(buffer, 0, &val);
 108         if (rc)
 109                 return rc;
 110
 111         if (val == 0 || val > OSC_MAX_RIF_MAX)
 112                 return -ERANGE;
 113
 114         LPROCFS_CLIMP_CHECK(dev);
 115
 116         adding = (int)val - cli->cl_max_rpcs_in_flight;
 117         req_count = atomic_read(&osc_pool_req_count);
 118         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 119                 /*
 120                  * There might be some race which will cause over-limit
 121                  * allocation, but it is fine.
 122                  */
 123                 if (req_count + adding > osc_reqpool_maxreqcount)
 124                         adding = osc_reqpool_maxreqcount - req_count;
 125
 126                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 127                 atomic_add(added, &osc_pool_req_count);
 128         }
 129
 130         spin_lock(&cli->cl_loi_list_lock);
 131         cli->cl_max_rpcs_in_flight = val;
 132         client_adjust_max_dirty(cli);
 133         spin_unlock(&cli->cl_loi_list_lock);
 134
 135         LPROCFS_CLIMP_EXIT(dev);
 136         return count;
 137 }
 138 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 139
 140 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 141                                  struct attribute *attr,
 142                                  char *buf)
 143 {
 144         struct obd_device *dev = container_of(kobj, struct obd_device,
 145                                               obd_kset.kobj);
 146         struct client_obd *cli = &dev->u.cli;
 147         long val;
 148         int mult;
 149
 150         spin_lock(&cli->cl_loi_list_lock);
 151         val = cli->cl_dirty_max_pages;
 152         spin_unlock(&cli->cl_loi_list_lock);
 153
 154         mult = 1 << (20 - PAGE_SHIFT);
 155         return lprocfs_read_frac_helper(buf, PAGE_SIZE, val, mult);
 156 }
 157
 158 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 159                                   struct attribute *attr,
 160                                   const char *buffer,
 161                                   size_t count)
 162 {
 163         struct obd_device *dev = container_of(kobj, struct obd_device,
 164                                               obd_kset.kobj);
 165         struct client_obd *cli = &dev->u.cli;
 166         unsigned long pages_number;
 167         int rc;
 168
 169         rc = kstrtoul(buffer, 10, &pages_number);
 170         if (rc)
 171                 return rc;
 172
 173         pages_number *= 1 << (20 - PAGE_SHIFT); /* MB -> pages */
 174
 175         if (pages_number <= 0 ||
 176             pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) ||
 177             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 178                 return -ERANGE;
 179
 180         spin_lock(&cli->cl_loi_list_lock);
 181         cli->cl_dirty_max_pages = pages_number;
 182         osc_wake_cache_waiters(cli);
 183         spin_unlock(&cli->cl_loi_list_lock);
 184
 185         return count;
 186 }
 187 LUSTRE_RW_ATTR(max_dirty_mb);
 188
 189 LUSTRE_RO_ATTR(conn_uuid);
 190
 191 LUSTRE_WO_ATTR(ping);
 192
 193 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 194 {
 195         struct obd_device *dev = m->private;
 196         struct client_obd *cli = &dev->u.cli;
 197         int shift = 20 - PAGE_SHIFT;
 198
 199         seq_printf(m, "used_mb: %ld\n"
 200                    "busy_cnt: %ld\n"
 201                    "reclaim: %llu\n",
 202                    (atomic_long_read(&cli->cl_lru_in_list) +
 203                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 204                     atomic_long_read(&cli->cl_lru_busy),
 205                    cli->cl_lru_reclaim);
 206
 207         return 0;
 208 }
 209
 210 /* shrink the number of caching pages to a specific number */
 211 static ssize_t osc_cached_mb_seq_write(struct file *file,
 212                                        const char __user *buffer,
 213                                        size_t count, loff_t *off)
 214 {
 215         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 216         struct client_obd *cli = &dev->u.cli;
 217         __s64 pages_number;
 218         long rc;
 219         char kernbuf[128];
 220
 221         if (count >= sizeof(kernbuf))
 222                 return -EINVAL;
 223
 224         if (copy_from_user(kernbuf, buffer, count))
 225                 return -EFAULT;
 226         kernbuf[count] = 0;
 227
 228         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 229                   kernbuf;
 230         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 231         if (rc)
 232                 return rc;
 233
 234         pages_number >>= PAGE_SHIFT;
 235
 236         if (pages_number < 0)
 237                 return -ERANGE;
 238
 239         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 240         if (rc > 0) {
 241                 struct lu_env *env;
 242                 __u16 refcheck;
 243
 244                 env = cl_env_get(&refcheck);
 245                 if (!IS_ERR(env)) {
 246                         (void)osc_lru_shrink(env, cli, rc, true);
 247                         cl_env_put(env, &refcheck);
 248                 }
 249         }
 250
 251         return count;
 252 }
 253
 254 LPROC_SEQ_FOPS(osc_cached_mb);
 255
 256 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 257                                     struct attribute *attr,
 258                                     char *buf)
 259 {
 260         struct obd_device *dev = container_of(kobj, struct obd_device,
 261                                               obd_kset.kobj);
 262         struct client_obd *cli = &dev->u.cli;
 263         ssize_t len;
 264
 265         spin_lock(&cli->cl_loi_list_lock);
 266         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 267         spin_unlock(&cli->cl_loi_list_lock);
 268
 269         return len;
 270 }
 271 LUSTRE_RO_ATTR(cur_dirty_bytes);
 272
 273 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 274 {
 275         struct obd_device *dev = m->private;
 276         struct client_obd *cli = &dev->u.cli;
 277
 278         spin_lock(&cli->cl_loi_list_lock);
 279         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 280         spin_unlock(&cli->cl_loi_list_lock);
 281         return 0;
 282 }
 283
 284 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 285                                              const char __user *buffer,
 286                                              size_t count, loff_t *off)
 287 {
 288         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 289         struct client_obd *cli = &obd->u.cli;
 290         s64 val;
 291         int rc;
 292
 293         if (obd == NULL)
 294                 return 0;
 295
 296         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 297         if (rc)
 298                 return rc;
 299         if (val < 0)
 300                 return val;
 301
 302         /* this is only for shrinking grant */
 303         spin_lock(&cli->cl_loi_list_lock);
 304         if (val >= cli->cl_avail_grant) {
 305                 spin_unlock(&cli->cl_loi_list_lock);
 306                 return 0;
 307         }
 308
 309         spin_unlock(&cli->cl_loi_list_lock);
 310
 311         LPROCFS_CLIMP_CHECK(obd);
 312         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 313                 rc = osc_shrink_grant_to_target(cli, val);
 314         LPROCFS_CLIMP_EXIT(obd);
 315
 316         return rc ? rc : count;
 317 }
 318 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 319
 320 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 321                                          struct attribute *attr,
 322                                          char *buf)
 323 {
 324         struct obd_device *dev = container_of(kobj, struct obd_device,
 325                                               obd_kset.kobj);
 326         struct client_obd *cli = &dev->u.cli;
 327         ssize_t len;
 328
 329         spin_lock(&cli->cl_loi_list_lock);
 330         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 331         spin_unlock(&cli->cl_loi_list_lock);
 332         return len;
 333 }
 334 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 335
 336 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 337                                           struct attribute *attr,
 338                                           char *buf)
 339 {
 340         struct obd_device *obd = container_of(kobj, struct obd_device,
 341                                               obd_kset.kobj);
 342
 343         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 344 }
 345
 346 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 347                                            struct attribute *attr,
 348                                            const char *buffer,
 349                                            size_t count)
 350 {
 351         struct obd_device *obd = container_of(kobj, struct obd_device,
 352                                               obd_kset.kobj);
 353         unsigned int val;
 354         int rc;
 355
 356         rc = kstrtouint(buffer, 0, &val);
 357         if (rc)
 358                 return rc;
 359
 360         if (val == 0)
 361                 return -ERANGE;
 362
 363         obd->u.cli.cl_grant_shrink_interval = val;
 364
 365         return count;
 366 }
 367 LUSTRE_RW_ATTR(grant_shrink_interval);
 368
 369 static ssize_t checksums_show(struct kobject *kobj,
 370                               struct attribute *attr,
 371                               char *buf)
 372 {
 373         struct obd_device *obd = container_of(kobj, struct obd_device,
 374                                               obd_kset.kobj);
 375
 376         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 377 }
 378
 379 static ssize_t checksums_store(struct kobject *kobj,
 380                                struct attribute *attr,
 381                                const char *buffer,
 382                                size_t count)
 383 {
 384         struct obd_device *obd = container_of(kobj, struct obd_device,
 385                                               obd_kset.kobj);
 386         bool val;
 387         int rc;
 388
 389         rc = kstrtobool(buffer, &val);
 390         if (rc)
 391                 return rc;
 392
 393         obd->u.cli.cl_checksum = val;
 394
 395         return count;
 396 }
 397 LUSTRE_RW_ATTR(checksums);
 398
 399 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 400 {
 401         struct obd_device *obd = m->private;
 402         int i;
 403         DECLARE_CKSUM_NAME;
 404
 405         if (obd == NULL)
 406                 return 0;
 407
 408         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 409                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 410                         continue;
 411                 if (obd->u.cli.cl_cksum_type == (1 << i))
 412                         seq_printf(m, "[%s] ", cksum_name[i]);
 413                 else
 414                         seq_printf(m, "%s ", cksum_name[i]);
 415         }
 416         seq_printf(m, "\n");
 417         return 0;
 418 }
 419
 420 static ssize_t osc_checksum_type_seq_write(struct file *file,
 421                                            const char __user *buffer,
 422                                            size_t count, loff_t *off)
 423 {
 424         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 425         int i;
 426         DECLARE_CKSUM_NAME;
 427         char kernbuf[10];
 428
 429         if (obd == NULL)
 430                 return 0;
 431
 432         if (count > sizeof(kernbuf) - 1)
 433                 return -EINVAL;
 434         if (copy_from_user(kernbuf, buffer, count))
 435                 return -EFAULT;
 436         if (count > 0 && kernbuf[count - 1] == '\n')
 437                 kernbuf[count - 1] = '\0';
 438         else
 439                 kernbuf[count] = '\0';
 440
 441         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 442                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 443                         continue;
 444                 if (!strcmp(kernbuf, cksum_name[i])) {
 445                        obd->u.cli.cl_cksum_type = 1 << i;
 446                        return count;
 447                 }
 448         }
 449         return -EINVAL;
 450 }
 451 LPROC_SEQ_FOPS(osc_checksum_type);
 452
 453 static ssize_t resend_count_show(struct kobject *kobj,
 454                                  struct attribute *attr,
 455                                  char *buf)
 456 {
 457         struct obd_device *obd = container_of(kobj, struct obd_device,
 458                                               obd_kset.kobj);
 459
 460         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 461 }
 462
 463 static ssize_t resend_count_store(struct kobject *kobj,
 464                                   struct attribute *attr,
 465                                   const char *buffer,
 466                                   size_t count)
 467 {
 468         struct obd_device *obd = container_of(kobj, struct obd_device,
 469                                               obd_kset.kobj);
 470         unsigned int val;
 471         int rc;
 472
 473         rc = kstrtouint(buffer, 10, &val);
 474         if (rc)
 475                 return rc;
 476
 477         atomic_set(&obd->u.cli.cl_resends, val);
 478
 479         return count;
 480 }
 481 LUSTRE_RW_ATTR(resend_count);
 482
 483 static ssize_t checksum_dump_show(struct kobject *kobj,
 484                                   struct attribute *attr,
 485                                   char *buf)
 486 {
 487         struct obd_device *obd = container_of(kobj, struct obd_device,
 488                                               obd_kset.kobj);
 489
 490         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 491 }
 492
 493 static ssize_t checksum_dump_store(struct kobject *kobj,
 494                                    struct attribute *attr,
 495                                    const char *buffer,
 496                                    size_t count)
 497 {
 498         struct obd_device *obd = container_of(kobj, struct obd_device,
 499                                               obd_kset.kobj);
 500         bool val;
 501         int rc;
 502
 503         rc = kstrtobool(buffer, &val);
 504         if (rc)
 505                 return rc;
 506
 507         obd->u.cli.cl_checksum_dump = val;
 508
 509         return count;
 510 }
 511 LUSTRE_RW_ATTR(checksum_dump);
 512
 513 static ssize_t contention_seconds_show(struct kobject *kobj,
 514                                        struct attribute *attr,
 515                                        char *buf)
 516 {
 517         struct obd_device *obd = container_of(kobj, struct obd_device,
 518                                               obd_kset.kobj);
 519         struct osc_device *od = obd2osc_dev(obd);
 520
 521         return sprintf(buf, "%lld\n", od->od_contention_time);
 522 }
 523
 524 static ssize_t contention_seconds_store(struct kobject *kobj,
 525                                         struct attribute *attr,
 526                                         const char *buffer,
 527                                         size_t count)
 528 {
 529         struct obd_device *obd = container_of(kobj, struct obd_device,
 530                                               obd_kset.kobj);
 531         struct osc_device *od = obd2osc_dev(obd);
 532         unsigned int val;
 533         int rc;
 534
 535         rc = kstrtouint(buffer, 0, &val);
 536         if (rc)
 537                 return rc;
 538
 539         od->od_contention_time = val;
 540
 541         return count;
 542 }
 543 LUSTRE_RW_ATTR(contention_seconds);
 544
 545 static ssize_t lockless_truncate_show(struct kobject *kobj,
 546                                       struct attribute *attr,
 547                                       char *buf)
 548 {
 549         struct obd_device *obd = container_of(kobj, struct obd_device,
 550                                               obd_kset.kobj);
 551         struct osc_device *od = obd2osc_dev(obd);
 552
 553         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 554 }
 555
 556 static ssize_t lockless_truncate_store(struct kobject *kobj,
 557                                        struct attribute *attr,
 558                                        const char *buffer,
 559                                        size_t count)
 560 {
 561         struct obd_device *obd = container_of(kobj, struct obd_device,
 562                                               obd_kset.kobj);
 563         struct osc_device *od = obd2osc_dev(obd);
 564         bool val;
 565         int rc;
 566
 567         rc = kstrtobool(buffer, &val);
 568         if (rc)
 569                 return rc;
 570
 571         od->od_lockless_truncate = val;
 572
 573         return count;
 574 }
 575 LUSTRE_RW_ATTR(lockless_truncate);
 576
 577 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 578                                        struct attribute *attr,
 579                                        char *buf)
 580 {
 581         struct obd_device *obd = container_of(kobj, struct obd_device,
 582                                               obd_kset.kobj);
 583
 584         return sprintf(buf, "%u\n",
 585                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 586 }
 587 LUSTRE_RO_ATTR(destroys_in_flight);
 588
 589 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 590
 591 LUSTRE_RW_ATTR(short_io_bytes);
 592
 593 #ifdef CONFIG_PROC_FS
 594 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 595 {
 596         struct obd_device *dev = m->private;
 597         struct client_obd *cli = &dev->u.cli;
 598         long pages;
 599         int mb;
 600
 601         pages = atomic_long_read(&cli->cl_unstable_count);
 602         mb    = (pages * PAGE_SIZE) >> 20;
 603
 604         seq_printf(m, "unstable_pages: %20ld\n"
 605                    "unstable_mb:              %10d\n",
 606                    pages, mb);
 607         return 0;
 608 }
 609 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 610
 611 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 612                                  char *buf)
 613 {
 614         struct obd_device *obd = container_of(kobj, struct obd_device,
 615                                               obd_kset.kobj);
 616         struct client_obd *cli = &obd->u.cli;
 617
 618         return sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 619 }
 620
 621 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 622                                   const char *buffer, size_t count)
 623 {
 624         struct obd_device *dev = container_of(kobj, struct obd_device,
 625                                               obd_kset.kobj);
 626         struct client_obd *cli = &dev->u.cli;
 627         struct ptlrpc_request *req;
 628         unsigned int val;
 629         int rc;
 630
 631         rc = kstrtouint(buffer, 10, &val);
 632         if (rc)
 633                 return rc;
 634
 635         if (val > CONNECTION_SWITCH_MAX)
 636                 return -ERANGE;
 637
 638         cli->cl_import->imp_idle_timeout = val;
 639
 640         /* to initiate the connection if it's in IDLE state */
 641         if (!val) {
 642                 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 643                 if (req != NULL)
 644                         ptlrpc_req_finished(req);
 645         }
 646
 647         return count;
 648 }
 649 LUSTRE_RW_ATTR(idle_timeout);
 650
 651 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 652                                   const char *buffer, size_t count)
 653 {
 654         struct obd_device *dev = container_of(kobj, struct obd_device,
 655                                               obd_kset.kobj);
 656         struct client_obd *cli = &dev->u.cli;
 657         struct ptlrpc_request *req;
 658
 659         /* to initiate the connection if it's in IDLE state */
 660         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 661         if (req)
 662                 ptlrpc_req_finished(req);
 663         ptlrpc_pinger_force(cli->cl_import);
 664
 665         return count;
 666 }
 667 LUSTRE_WO_ATTR(idle_connect);
 668
 669 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 670 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 671 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 672 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 673
 674 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 675 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 676
 677 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 678         { .name =       "connect_flags",
 679           .fops =       &osc_connect_flags_fops         },
 680         { .name =       "ost_server_uuid",
 681           .fops =       &osc_server_uuid_fops           },
 682         { .name =       "max_pages_per_rpc",
 683           .fops =       &osc_obd_max_pages_per_rpc_fops },
 684         { .name =       "osc_cached_mb",
 685           .fops =       &osc_cached_mb_fops             },
 686         { .name =       "cur_grant_bytes",
 687           .fops =       &osc_cur_grant_bytes_fops       },
 688         { .name =       "checksum_type",
 689           .fops =       &osc_checksum_type_fops         },
 690         { .name =       "timeouts",
 691           .fops =       &osc_timeouts_fops              },
 692         { .name =       "import",
 693           .fops =       &osc_import_fops                },
 694         { .name =       "state",
 695           .fops =       &osc_state_fops                 },
 696         { .name =       "pinger_recov",
 697           .fops =       &osc_pinger_recov_fops          },
 698         { .name =       "unstable_stats",
 699           .fops =       &osc_unstable_stats_fops        },
 700         { NULL }
 701 };
 702
 703 #define pct(a,b) (b ? a * 100 / b : 0)
 704
 705 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 706 {
 707         struct timespec64 now;
 708         struct obd_device *dev = seq->private;
 709         struct client_obd *cli = &dev->u.cli;
 710         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 711         int i;
 712
 713         ktime_get_real_ts64(&now);
 714
 715         spin_lock(&cli->cl_loi_list_lock);
 716
 717         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 718                    (s64)now.tv_sec, now.tv_nsec);
 719         seq_printf(seq, "read RPCs in flight:  %d\n",
 720                    cli->cl_r_in_flight);
 721         seq_printf(seq, "write RPCs in flight: %d\n",
 722                    cli->cl_w_in_flight);
 723         seq_printf(seq, "pending write pages:  %d\n",
 724                    atomic_read(&cli->cl_pending_w_pages));
 725         seq_printf(seq, "pending read pages:   %d\n",
 726                    atomic_read(&cli->cl_pending_r_pages));
 727
 728         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 729         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 730         seq_printf(seq, "       rpcs   %% cum %%\n");
 731
 732         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 733         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 734
 735         read_cum = 0;
 736         write_cum = 0;
 737         for (i = 0; i < OBD_HIST_MAX; i++) {
 738                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 739                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 740
 741                 read_cum += r;
 742                 write_cum += w;
 743                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 744                            1 << i, r, pct(r, read_tot),
 745                            pct(read_cum, read_tot), w,
 746                            pct(w, write_tot),
 747                            pct(write_cum, write_tot));
 748                 if (read_cum == read_tot && write_cum == write_tot)
 749                         break;
 750         }
 751
 752         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 753         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 754         seq_printf(seq, "       rpcs   %% cum %%\n");
 755
 756         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 757         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 758
 759         read_cum = 0;
 760         write_cum = 0;
 761         for (i = 0; i < OBD_HIST_MAX; i++) {
 762                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 763                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 764                 read_cum += r;
 765                 write_cum += w;
 766                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 767                            i, r, pct(r, read_tot),
 768                            pct(read_cum, read_tot), w,
 769                            pct(w, write_tot),
 770                            pct(write_cum, write_tot));
 771                 if (read_cum == read_tot && write_cum == write_tot)
 772                         break;
 773         }
 774
 775         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 776         seq_printf(seq, "offset                rpcs   %% cum %% |");
 777         seq_printf(seq, "       rpcs   %% cum %%\n");
 778
 779         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 780         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 781
 782         read_cum = 0;
 783         write_cum = 0;
 784         for (i = 0; i < OBD_HIST_MAX; i++) {
 785                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 786                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 787                 read_cum += r;
 788                 write_cum += w;
 789                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 790                            (i == 0) ? 0 : 1 << (i - 1),
 791                            r, pct(r, read_tot), pct(read_cum, read_tot),
 792                            w, pct(w, write_tot), pct(write_cum, write_tot));
 793                 if (read_cum == read_tot && write_cum == write_tot)
 794                         break;
 795         }
 796
 797         spin_unlock(&cli->cl_loi_list_lock);
 798
 799         return 0;
 800 }
 801 #undef pct
 802
 803 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 804                                        const char __user *buf,
 805                                        size_t len, loff_t *off)
 806 {
 807         struct seq_file *seq = file->private_data;
 808         struct obd_device *dev = seq->private;
 809         struct client_obd *cli = &dev->u.cli;
 810
 811         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 812         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 813         lprocfs_oh_clear(&cli->cl_read_page_hist);
 814         lprocfs_oh_clear(&cli->cl_write_page_hist);
 815         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 816         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 817
 818         return len;
 819 }
 820 LPROC_SEQ_FOPS(osc_rpc_stats);
 821
 822 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 823 {
 824         struct timespec64 now;
 825         struct obd_device *dev = seq->private;
 826         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 827
 828         ktime_get_real_ts64(&now);
 829
 830         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 831                    (s64)now.tv_sec, now.tv_nsec);
 832         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 833                    stats->os_lockless_writes);
 834         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 835                    stats->os_lockless_reads);
 836         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 837                    stats->os_lockless_truncates);
 838         return 0;
 839 }
 840
 841 static ssize_t osc_stats_seq_write(struct file *file,
 842                                    const char __user *buf,
 843                                    size_t len, loff_t *off)
 844 {
 845         struct seq_file *seq = file->private_data;
 846         struct obd_device *dev = seq->private;
 847         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 848
 849         memset(stats, 0, sizeof(*stats));
 850         return len;
 851 }
 852
 853 LPROC_SEQ_FOPS(osc_stats);
 854
 855 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 856 {
 857         int rc;
 858
 859         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 860                                 &osc_stats_fops, dev);
 861         if (rc == 0)
 862                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 863                                             &osc_rpc_stats_fops, dev);
 864
 865         return rc;
 866 }
 867 #endif /* CONFIG_PROC_FS */
 868
 869 static struct attribute *osc_attrs[] = {
 870         &lustre_attr_active.attr,
 871         &lustre_attr_checksums.attr,
 872         &lustre_attr_checksum_dump.attr,
 873         &lustre_attr_contention_seconds.attr,
 874         &lustre_attr_cur_dirty_bytes.attr,
 875         &lustre_attr_cur_lost_grant_bytes.attr,
 876         &lustre_attr_destroys_in_flight.attr,
 877         &lustre_attr_grant_shrink_interval.attr,
 878         &lustre_attr_lockless_truncate.attr,
 879         &lustre_attr_max_dirty_mb.attr,
 880         &lustre_attr_max_rpcs_in_flight.attr,
 881         &lustre_attr_short_io_bytes.attr,
 882         &lustre_attr_resend_count.attr,
 883         &lustre_attr_conn_uuid.attr,
 884         &lustre_attr_ping.attr,
 885         &lustre_attr_idle_timeout.attr,
 886         &lustre_attr_idle_connect.attr,
 887         NULL,
 888 };
 889
 890 int osc_tunables_init(struct obd_device *obd)
 891 {
 892 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 893         struct obd_type *type;
 894 #endif
 895         int rc;
 896
 897         obd->obd_vars = lprocfs_osc_obd_vars;
 898 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 899         /* If this is true then both client (osc) and server (osp) are on the
 900          * same node. The osp layer if loaded first will register the osc proc
 901          * directory. In that case this obd_device will be attached its proc
 902          * tree to type->typ_procsym instead of obd->obd_type->typ_procroot.
 903          */
 904         type = class_search_type(LUSTRE_OSP_NAME);
 905         if (type && type->typ_procsym) {
 906                 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
 907                                                        type->typ_procsym,
 908                                                        obd->obd_vars, obd);
 909                 if (IS_ERR(obd->obd_proc_entry)) {
 910                         rc = PTR_ERR(obd->obd_proc_entry);
 911                         CERROR("error %d setting up lprocfs for %s\n", rc,
 912                                obd->obd_name);
 913                         obd->obd_proc_entry = NULL;
 914                 }
 915         }
 916 #endif
 917         obd->obd_ktype.default_attrs = osc_attrs;
 918         rc = lprocfs_obd_setup(obd, false);
 919         if (rc)
 920                 return rc;
 921 #ifdef CONFIG_PROC_FS
 922         /* If the basic OSC proc tree construction succeeded then
 923          * lets do the rest.
 924          */
 925         rc = lprocfs_osc_attach_seqstat(obd);
 926         if (rc)
 927                 goto obd_cleanup;
 928
 929 #endif /* CONFIG_PROC_FS */
 930         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 931         if (rc)
 932                 goto obd_cleanup;
 933
 934         ptlrpc_lprocfs_register_obd(obd);
 935 obd_cleanup:
 936         if (rc)
 937                 lprocfs_obd_cleanup(obd);
 938         return rc;
 939 }