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         unsigned long val;
 148
 149         spin_lock(&cli->cl_loi_list_lock);
 150         val = PAGES_TO_MiB(cli->cl_dirty_max_pages);
 151         spin_unlock(&cli->cl_loi_list_lock);
 152
 153         return sprintf(buf, "%lu\n", val);
 154 }
 155
 156 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 157                                   struct attribute *attr,
 158                                   const char *buffer,
 159                                   size_t count)
 160 {
 161         struct obd_device *dev = container_of(kobj, struct obd_device,
 162                                               obd_kset.kobj);
 163         struct client_obd *cli = &dev->u.cli;
 164         unsigned long pages_number, max_dirty_mb;
 165         int rc;
 166
 167         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 168         if (rc)
 169                 return rc;
 170
 171         pages_number = MiB_TO_PAGES(max_dirty_mb);
 172
 173         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 174             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 175                 return -ERANGE;
 176
 177         spin_lock(&cli->cl_loi_list_lock);
 178         cli->cl_dirty_max_pages = pages_number;
 179         osc_wake_cache_waiters(cli);
 180         spin_unlock(&cli->cl_loi_list_lock);
 181
 182         return count;
 183 }
 184 LUSTRE_RW_ATTR(max_dirty_mb);
 185
 186 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 187 LUSTRE_RO_ATTR(conn_uuid);
 188
 189 LUSTRE_RW_ATTR(ping);
 190
 191 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 192 {
 193         struct obd_device *dev = m->private;
 194         struct client_obd *cli = &dev->u.cli;
 195         int shift = 20 - PAGE_SHIFT;
 196
 197         seq_printf(m, "used_mb: %ld\n"
 198                    "busy_cnt: %ld\n"
 199                    "reclaim: %llu\n",
 200                    (atomic_long_read(&cli->cl_lru_in_list) +
 201                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 202                     atomic_long_read(&cli->cl_lru_busy),
 203                    cli->cl_lru_reclaim);
 204
 205         return 0;
 206 }
 207
 208 /* shrink the number of caching pages to a specific number */
 209 static ssize_t osc_cached_mb_seq_write(struct file *file,
 210                                        const char __user *buffer,
 211                                        size_t count, loff_t *off)
 212 {
 213         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 214         struct client_obd *cli = &dev->u.cli;
 215         __s64 pages_number;
 216         long rc;
 217         char kernbuf[128];
 218
 219         if (count >= sizeof(kernbuf))
 220                 return -EINVAL;
 221
 222         if (copy_from_user(kernbuf, buffer, count))
 223                 return -EFAULT;
 224         kernbuf[count] = 0;
 225
 226         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 227                   kernbuf;
 228         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 229         if (rc)
 230                 return rc;
 231
 232         pages_number >>= PAGE_SHIFT;
 233
 234         if (pages_number < 0)
 235                 return -ERANGE;
 236
 237         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 238         if (rc > 0) {
 239                 struct lu_env *env;
 240                 __u16 refcheck;
 241
 242                 env = cl_env_get(&refcheck);
 243                 if (!IS_ERR(env)) {
 244                         (void)osc_lru_shrink(env, cli, rc, true);
 245                         cl_env_put(env, &refcheck);
 246                 }
 247         }
 248
 249         return count;
 250 }
 251
 252 LPROC_SEQ_FOPS(osc_cached_mb);
 253
 254 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 255                                     struct attribute *attr,
 256                                     char *buf)
 257 {
 258         struct obd_device *dev = container_of(kobj, struct obd_device,
 259                                               obd_kset.kobj);
 260         struct client_obd *cli = &dev->u.cli;
 261         ssize_t len;
 262
 263         spin_lock(&cli->cl_loi_list_lock);
 264         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 265         spin_unlock(&cli->cl_loi_list_lock);
 266
 267         return len;
 268 }
 269 LUSTRE_RO_ATTR(cur_dirty_bytes);
 270
 271 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 272 {
 273         struct obd_device *dev = m->private;
 274         struct client_obd *cli = &dev->u.cli;
 275
 276         spin_lock(&cli->cl_loi_list_lock);
 277         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 278         spin_unlock(&cli->cl_loi_list_lock);
 279         return 0;
 280 }
 281
 282 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 283                                              const char __user *buffer,
 284                                              size_t count, loff_t *off)
 285 {
 286         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 287         struct client_obd *cli = &obd->u.cli;
 288         s64 val;
 289         int rc;
 290
 291         if (obd == NULL)
 292                 return 0;
 293
 294         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 295         if (rc)
 296                 return rc;
 297         if (val < 0)
 298                 return val;
 299
 300         /* this is only for shrinking grant */
 301         spin_lock(&cli->cl_loi_list_lock);
 302         if (val >= cli->cl_avail_grant) {
 303                 spin_unlock(&cli->cl_loi_list_lock);
 304                 return 0;
 305         }
 306
 307         spin_unlock(&cli->cl_loi_list_lock);
 308
 309         LPROCFS_CLIMP_CHECK(obd);
 310         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 311                 rc = osc_shrink_grant_to_target(cli, val);
 312         LPROCFS_CLIMP_EXIT(obd);
 313
 314         return rc ? rc : count;
 315 }
 316 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 317
 318 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 319                                          struct attribute *attr,
 320                                          char *buf)
 321 {
 322         struct obd_device *dev = container_of(kobj, struct obd_device,
 323                                               obd_kset.kobj);
 324         struct client_obd *cli = &dev->u.cli;
 325         ssize_t len;
 326
 327         spin_lock(&cli->cl_loi_list_lock);
 328         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 329         spin_unlock(&cli->cl_loi_list_lock);
 330         return len;
 331 }
 332 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 333
 334 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 335                                           struct attribute *attr,
 336                                           char *buf)
 337 {
 338         struct obd_device *obd = container_of(kobj, struct obd_device,
 339                                               obd_kset.kobj);
 340
 341         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 342 }
 343
 344 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 345                                            struct attribute *attr,
 346                                            const char *buffer,
 347                                            size_t count)
 348 {
 349         struct obd_device *obd = container_of(kobj, struct obd_device,
 350                                               obd_kset.kobj);
 351         unsigned int val;
 352         int rc;
 353
 354         rc = kstrtouint(buffer, 0, &val);
 355         if (rc)
 356                 return rc;
 357
 358         if (val == 0)
 359                 return -ERANGE;
 360
 361         obd->u.cli.cl_grant_shrink_interval = val;
 362
 363         return count;
 364 }
 365 LUSTRE_RW_ATTR(grant_shrink_interval);
 366
 367 static ssize_t checksums_show(struct kobject *kobj,
 368                               struct attribute *attr,
 369                               char *buf)
 370 {
 371         struct obd_device *obd = container_of(kobj, struct obd_device,
 372                                               obd_kset.kobj);
 373
 374         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 375 }
 376
 377 static ssize_t checksums_store(struct kobject *kobj,
 378                                struct attribute *attr,
 379                                const char *buffer,
 380                                size_t count)
 381 {
 382         struct obd_device *obd = container_of(kobj, struct obd_device,
 383                                               obd_kset.kobj);
 384         bool val;
 385         int rc;
 386
 387         rc = kstrtobool(buffer, &val);
 388         if (rc)
 389                 return rc;
 390
 391         obd->u.cli.cl_checksum = val;
 392
 393         return count;
 394 }
 395 LUSTRE_RW_ATTR(checksums);
 396
 397 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 398 {
 399         struct obd_device *obd = m->private;
 400         int i;
 401         DECLARE_CKSUM_NAME;
 402
 403         if (obd == NULL)
 404                 return 0;
 405
 406         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 407                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 408                         continue;
 409                 if (obd->u.cli.cl_cksum_type == (1 << i))
 410                         seq_printf(m, "[%s] ", cksum_name[i]);
 411                 else
 412                         seq_printf(m, "%s ", cksum_name[i]);
 413         }
 414         seq_printf(m, "\n");
 415         return 0;
 416 }
 417
 418 static ssize_t osc_checksum_type_seq_write(struct file *file,
 419                                            const char __user *buffer,
 420                                            size_t count, loff_t *off)
 421 {
 422         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 423         int i;
 424         DECLARE_CKSUM_NAME;
 425         char kernbuf[10];
 426
 427         if (obd == NULL)
 428                 return 0;
 429
 430         if (count > sizeof(kernbuf) - 1)
 431                 return -EINVAL;
 432         if (copy_from_user(kernbuf, buffer, count))
 433                 return -EFAULT;
 434         if (count > 0 && kernbuf[count - 1] == '\n')
 435                 kernbuf[count - 1] = '\0';
 436         else
 437                 kernbuf[count] = '\0';
 438
 439         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 440                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 441                         continue;
 442                 if (!strcmp(kernbuf, cksum_name[i])) {
 443                        obd->u.cli.cl_cksum_type = 1 << i;
 444                        return count;
 445                 }
 446         }
 447         return -EINVAL;
 448 }
 449 LPROC_SEQ_FOPS(osc_checksum_type);
 450
 451 static ssize_t resend_count_show(struct kobject *kobj,
 452                                  struct attribute *attr,
 453                                  char *buf)
 454 {
 455         struct obd_device *obd = container_of(kobj, struct obd_device,
 456                                               obd_kset.kobj);
 457
 458         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 459 }
 460
 461 static ssize_t resend_count_store(struct kobject *kobj,
 462                                   struct attribute *attr,
 463                                   const char *buffer,
 464                                   size_t count)
 465 {
 466         struct obd_device *obd = container_of(kobj, struct obd_device,
 467                                               obd_kset.kobj);
 468         unsigned int val;
 469         int rc;
 470
 471         rc = kstrtouint(buffer, 10, &val);
 472         if (rc)
 473                 return rc;
 474
 475         atomic_set(&obd->u.cli.cl_resends, val);
 476
 477         return count;
 478 }
 479 LUSTRE_RW_ATTR(resend_count);
 480
 481 static ssize_t checksum_dump_show(struct kobject *kobj,
 482                                   struct attribute *attr,
 483                                   char *buf)
 484 {
 485         struct obd_device *obd = container_of(kobj, struct obd_device,
 486                                               obd_kset.kobj);
 487
 488         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 489 }
 490
 491 static ssize_t checksum_dump_store(struct kobject *kobj,
 492                                    struct attribute *attr,
 493                                    const char *buffer,
 494                                    size_t count)
 495 {
 496         struct obd_device *obd = container_of(kobj, struct obd_device,
 497                                               obd_kset.kobj);
 498         bool val;
 499         int rc;
 500
 501         rc = kstrtobool(buffer, &val);
 502         if (rc)
 503                 return rc;
 504
 505         obd->u.cli.cl_checksum_dump = val;
 506
 507         return count;
 508 }
 509 LUSTRE_RW_ATTR(checksum_dump);
 510
 511 static ssize_t contention_seconds_show(struct kobject *kobj,
 512                                        struct attribute *attr,
 513                                        char *buf)
 514 {
 515         struct obd_device *obd = container_of(kobj, struct obd_device,
 516                                               obd_kset.kobj);
 517         struct osc_device *od = obd2osc_dev(obd);
 518
 519         return sprintf(buf, "%lld\n", od->od_contention_time);
 520 }
 521
 522 static ssize_t contention_seconds_store(struct kobject *kobj,
 523                                         struct attribute *attr,
 524                                         const char *buffer,
 525                                         size_t count)
 526 {
 527         struct obd_device *obd = container_of(kobj, struct obd_device,
 528                                               obd_kset.kobj);
 529         struct osc_device *od = obd2osc_dev(obd);
 530         unsigned int val;
 531         int rc;
 532
 533         rc = kstrtouint(buffer, 0, &val);
 534         if (rc)
 535                 return rc;
 536
 537         od->od_contention_time = val;
 538
 539         return count;
 540 }
 541 LUSTRE_RW_ATTR(contention_seconds);
 542
 543 static ssize_t lockless_truncate_show(struct kobject *kobj,
 544                                       struct attribute *attr,
 545                                       char *buf)
 546 {
 547         struct obd_device *obd = container_of(kobj, struct obd_device,
 548                                               obd_kset.kobj);
 549         struct osc_device *od = obd2osc_dev(obd);
 550
 551         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 552 }
 553
 554 static ssize_t lockless_truncate_store(struct kobject *kobj,
 555                                        struct attribute *attr,
 556                                        const char *buffer,
 557                                        size_t count)
 558 {
 559         struct obd_device *obd = container_of(kobj, struct obd_device,
 560                                               obd_kset.kobj);
 561         struct osc_device *od = obd2osc_dev(obd);
 562         bool val;
 563         int rc;
 564
 565         rc = kstrtobool(buffer, &val);
 566         if (rc)
 567                 return rc;
 568
 569         od->od_lockless_truncate = val;
 570
 571         return count;
 572 }
 573 LUSTRE_RW_ATTR(lockless_truncate);
 574
 575 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 576                                        struct attribute *attr,
 577                                        char *buf)
 578 {
 579         struct obd_device *obd = container_of(kobj, struct obd_device,
 580                                               obd_kset.kobj);
 581
 582         return sprintf(buf, "%u\n",
 583                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 584 }
 585 LUSTRE_RO_ATTR(destroys_in_flight);
 586
 587 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 588
 589 LUSTRE_RW_ATTR(short_io_bytes);
 590
 591 #ifdef CONFIG_PROC_FS
 592 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 593 {
 594         struct obd_device *dev = m->private;
 595         struct client_obd *cli = &dev->u.cli;
 596         long pages;
 597         int mb;
 598
 599         pages = atomic_long_read(&cli->cl_unstable_count);
 600         mb    = (pages * PAGE_SIZE) >> 20;
 601
 602         seq_printf(m, "unstable_pages: %20ld\n"
 603                    "unstable_mb:              %10d\n",
 604                    pages, mb);
 605         return 0;
 606 }
 607 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 608
 609 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 610                                  char *buf)
 611 {
 612         struct obd_device *obd = container_of(kobj, struct obd_device,
 613                                               obd_kset.kobj);
 614         struct client_obd *cli = &obd->u.cli;
 615         int ret;
 616
 617         LPROCFS_CLIMP_CHECK(obd);
 618         ret = sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 619         LPROCFS_CLIMP_EXIT(obd);
 620
 621         return ret;
 622 }
 623
 624 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 625                                   const char *buffer, size_t count)
 626 {
 627         struct obd_device *dev = container_of(kobj, struct obd_device,
 628                                               obd_kset.kobj);
 629         struct client_obd *cli = &dev->u.cli;
 630         struct ptlrpc_request *req;
 631         unsigned int idle_debug = 0;
 632         unsigned int val;
 633         int rc;
 634
 635         if (strncmp(buffer, "debug", 5) == 0) {
 636                 idle_debug = D_CONSOLE;
 637         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 638                 idle_debug = D_HA;
 639         } else {
 640                 rc = kstrtouint(buffer, 10, &val);
 641                 if (rc)
 642                         return rc;
 643
 644                 if (val > CONNECTION_SWITCH_MAX)
 645                         return -ERANGE;
 646         }
 647
 648         LPROCFS_CLIMP_CHECK(dev);
 649         if (idle_debug) {
 650                 cli->cl_import->imp_idle_debug = idle_debug;
 651         } else {
 652                 if (!val) {
 653                         /* initiate the connection if it's in IDLE state */
 654                         req = ptlrpc_request_alloc(cli->cl_import,
 655                                                    &RQF_OST_STATFS);
 656                         if (req != NULL)
 657                                 ptlrpc_req_finished(req);
 658                 }
 659                 cli->cl_import->imp_idle_timeout = val;
 660         }
 661         LPROCFS_CLIMP_EXIT(dev);
 662
 663         return count;
 664 }
 665 LUSTRE_RW_ATTR(idle_timeout);
 666
 667 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 668                                   const char *buffer, size_t count)
 669 {
 670         struct obd_device *dev = container_of(kobj, struct obd_device,
 671                                               obd_kset.kobj);
 672         struct client_obd *cli = &dev->u.cli;
 673         struct ptlrpc_request *req;
 674
 675         LPROCFS_CLIMP_CHECK(dev);
 676         /* to initiate the connection if it's in IDLE state */
 677         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 678         if (req)
 679                 ptlrpc_req_finished(req);
 680         ptlrpc_pinger_force(cli->cl_import);
 681         LPROCFS_CLIMP_EXIT(dev);
 682
 683         return count;
 684 }
 685 LUSTRE_WO_ATTR(idle_connect);
 686
 687 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 688                                  char *buf)
 689 {
 690         struct obd_device *obd = container_of(kobj, struct obd_device,
 691                                               obd_kset.kobj);
 692         struct obd_import *imp;
 693         ssize_t len;
 694
 695         LPROCFS_CLIMP_CHECK(obd);
 696         imp = obd->u.cli.cl_import;
 697         len = snprintf(buf, PAGE_SIZE, "%d\n",
 698                        !imp->imp_grant_shrink_disabled &&
 699                        OCD_HAS_FLAG(&imp->imp_connect_data, GRANT_SHRINK));
 700         LPROCFS_CLIMP_EXIT(obd);
 701
 702         return len;
 703 }
 704
 705 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 706                                   const char *buffer, size_t count)
 707 {
 708         struct obd_device *dev = container_of(kobj, struct obd_device,
 709                                               obd_kset.kobj);
 710         struct obd_import *imp;
 711         bool val;
 712         int rc;
 713
 714         if (dev == NULL)
 715                 return 0;
 716
 717         rc = kstrtobool(buffer, &val);
 718         if (rc)
 719                 return rc;
 720
 721         LPROCFS_CLIMP_CHECK(dev);
 722
 723         imp = dev->u.cli.cl_import;
 724         spin_lock(&imp->imp_lock);
 725         imp->imp_grant_shrink_disabled = !val;
 726         spin_unlock(&imp->imp_lock);
 727
 728         LPROCFS_CLIMP_EXIT(dev);
 729
 730         return count;
 731 }
 732 LUSTRE_RW_ATTR(grant_shrink);
 733
 734 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 735 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 736 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 737 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 738
 739 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 740 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 741
 742 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 743         { .name =       "connect_flags",
 744           .fops =       &osc_connect_flags_fops         },
 745         { .name =       "ost_server_uuid",
 746           .fops =       &osc_server_uuid_fops           },
 747         { .name =       "max_pages_per_rpc",
 748           .fops =       &osc_obd_max_pages_per_rpc_fops },
 749         { .name =       "osc_cached_mb",
 750           .fops =       &osc_cached_mb_fops             },
 751         { .name =       "cur_grant_bytes",
 752           .fops =       &osc_cur_grant_bytes_fops       },
 753         { .name =       "checksum_type",
 754           .fops =       &osc_checksum_type_fops         },
 755         { .name =       "timeouts",
 756           .fops =       &osc_timeouts_fops              },
 757         { .name =       "import",
 758           .fops =       &osc_import_fops                },
 759         { .name =       "state",
 760           .fops =       &osc_state_fops                 },
 761         { .name =       "pinger_recov",
 762           .fops =       &osc_pinger_recov_fops          },
 763         { .name =       "unstable_stats",
 764           .fops =       &osc_unstable_stats_fops        },
 765         { NULL }
 766 };
 767
 768 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 769 {
 770         struct timespec64 now;
 771         struct obd_device *dev = seq->private;
 772         struct client_obd *cli = &dev->u.cli;
 773         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 774         int i;
 775
 776         ktime_get_real_ts64(&now);
 777
 778         spin_lock(&cli->cl_loi_list_lock);
 779
 780         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 781                    (s64)now.tv_sec, now.tv_nsec);
 782         seq_printf(seq, "read RPCs in flight:  %d\n",
 783                    cli->cl_r_in_flight);
 784         seq_printf(seq, "write RPCs in flight: %d\n",
 785                    cli->cl_w_in_flight);
 786         seq_printf(seq, "pending write pages:  %d\n",
 787                    atomic_read(&cli->cl_pending_w_pages));
 788         seq_printf(seq, "pending read pages:   %d\n",
 789                    atomic_read(&cli->cl_pending_r_pages));
 790
 791         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 792         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 793         seq_printf(seq, "       rpcs   %% cum %%\n");
 794
 795         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 796         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 797
 798         read_cum = 0;
 799         write_cum = 0;
 800         for (i = 0; i < OBD_HIST_MAX; i++) {
 801                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 802                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 803
 804                 read_cum += r;
 805                 write_cum += w;
 806                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 807                            1 << i, r, pct(r, read_tot),
 808                            pct(read_cum, read_tot), w,
 809                            pct(w, write_tot),
 810                            pct(write_cum, write_tot));
 811                 if (read_cum == read_tot && write_cum == write_tot)
 812                         break;
 813         }
 814
 815         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 816         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 817         seq_printf(seq, "       rpcs   %% cum %%\n");
 818
 819         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 820         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 821
 822         read_cum = 0;
 823         write_cum = 0;
 824         for (i = 0; i < OBD_HIST_MAX; i++) {
 825                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 826                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 827                 read_cum += r;
 828                 write_cum += w;
 829                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 830                            i, r, pct(r, read_tot),
 831                            pct(read_cum, read_tot), w,
 832                            pct(w, write_tot),
 833                            pct(write_cum, write_tot));
 834                 if (read_cum == read_tot && write_cum == write_tot)
 835                         break;
 836         }
 837
 838         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 839         seq_printf(seq, "offset                rpcs   %% cum %% |");
 840         seq_printf(seq, "       rpcs   %% cum %%\n");
 841
 842         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 843         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 844
 845         read_cum = 0;
 846         write_cum = 0;
 847         for (i = 0; i < OBD_HIST_MAX; i++) {
 848                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 849                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 850                 read_cum += r;
 851                 write_cum += w;
 852                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 853                            (i == 0) ? 0 : 1 << (i - 1),
 854                            r, pct(r, read_tot), pct(read_cum, read_tot),
 855                            w, pct(w, write_tot), pct(write_cum, write_tot));
 856                 if (read_cum == read_tot && write_cum == write_tot)
 857                         break;
 858         }
 859
 860         spin_unlock(&cli->cl_loi_list_lock);
 861
 862         return 0;
 863 }
 864
 865 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 866                                        const char __user *buf,
 867                                        size_t len, loff_t *off)
 868 {
 869         struct seq_file *seq = file->private_data;
 870         struct obd_device *dev = seq->private;
 871         struct client_obd *cli = &dev->u.cli;
 872
 873         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 874         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 875         lprocfs_oh_clear(&cli->cl_read_page_hist);
 876         lprocfs_oh_clear(&cli->cl_write_page_hist);
 877         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 878         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 879
 880         return len;
 881 }
 882 LPROC_SEQ_FOPS(osc_rpc_stats);
 883
 884 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 885 {
 886         struct timespec64 now;
 887         struct obd_device *dev = seq->private;
 888         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 889
 890         ktime_get_real_ts64(&now);
 891
 892         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 893                    (s64)now.tv_sec, now.tv_nsec);
 894         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 895                    stats->os_lockless_writes);
 896         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 897                    stats->os_lockless_reads);
 898         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 899                    stats->os_lockless_truncates);
 900         return 0;
 901 }
 902
 903 static ssize_t osc_stats_seq_write(struct file *file,
 904                                    const char __user *buf,
 905                                    size_t len, loff_t *off)
 906 {
 907         struct seq_file *seq = file->private_data;
 908         struct obd_device *dev = seq->private;
 909         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 910
 911         memset(stats, 0, sizeof(*stats));
 912         return len;
 913 }
 914
 915 LPROC_SEQ_FOPS(osc_stats);
 916
 917 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 918 {
 919         int rc;
 920
 921         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 922                                 &osc_stats_fops, dev);
 923         if (rc == 0)
 924                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 925                                             &osc_rpc_stats_fops, dev);
 926
 927         return rc;
 928 }
 929 #endif /* CONFIG_PROC_FS */
 930
 931 static struct attribute *osc_attrs[] = {
 932         &lustre_attr_active.attr,
 933         &lustre_attr_checksums.attr,
 934         &lustre_attr_checksum_dump.attr,
 935         &lustre_attr_contention_seconds.attr,
 936         &lustre_attr_cur_dirty_bytes.attr,
 937         &lustre_attr_cur_lost_grant_bytes.attr,
 938         &lustre_attr_destroys_in_flight.attr,
 939         &lustre_attr_grant_shrink_interval.attr,
 940         &lustre_attr_lockless_truncate.attr,
 941         &lustre_attr_max_dirty_mb.attr,
 942         &lustre_attr_max_rpcs_in_flight.attr,
 943         &lustre_attr_short_io_bytes.attr,
 944         &lustre_attr_resend_count.attr,
 945         &lustre_attr_ost_conn_uuid.attr,
 946         &lustre_attr_conn_uuid.attr,
 947         &lustre_attr_ping.attr,
 948         &lustre_attr_idle_timeout.attr,
 949         &lustre_attr_idle_connect.attr,
 950         &lustre_attr_grant_shrink.attr,
 951         NULL,
 952 };
 953
 954 int osc_tunables_init(struct obd_device *obd)
 955 {
 956 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 957         struct obd_type *type;
 958 #endif
 959         int rc;
 960
 961         obd->obd_vars = lprocfs_osc_obd_vars;
 962 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 963         /* If this is true then both client (osc) and server (osp) are on the
 964          * same node. The osp layer if loaded first will register the osc proc
 965          * directory. In that case this obd_device will be attached its proc
 966          * tree to type->typ_procsym instead of obd->obd_type->typ_procroot.
 967          */
 968         type = class_search_type(LUSTRE_OSP_NAME);
 969         if (type && type->typ_procsym) {
 970                 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
 971                                                        type->typ_procsym,
 972                                                        obd->obd_vars, obd);
 973                 if (IS_ERR(obd->obd_proc_entry)) {
 974                         rc = PTR_ERR(obd->obd_proc_entry);
 975                         CERROR("error %d setting up lprocfs for %s\n", rc,
 976                                obd->obd_name);
 977                         obd->obd_proc_entry = NULL;
 978                 }
 979         }
 980 #endif
 981         obd->obd_ktype.default_attrs = osc_attrs;
 982         rc = lprocfs_obd_setup(obd, false);
 983         if (rc)
 984                 return rc;
 985 #ifdef CONFIG_PROC_FS
 986         /* If the basic OSC proc tree construction succeeded then
 987          * lets do the rest.
 988          */
 989         rc = lprocfs_osc_attach_seqstat(obd);
 990         if (rc)
 991                 goto obd_cleanup;
 992
 993 #endif /* CONFIG_PROC_FS */
 994         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 995         if (rc)
 996                 goto obd_cleanup;
 997
 998         ptlrpc_lprocfs_register_obd(obd);
 999 obd_cleanup:
1000         if (rc)
1001                 lprocfs_obd_cleanup(obd);
1002         return rc;
1003 }