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 > cfs_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 seq_file *m = file->private_data;
 214         struct obd_device *dev = m->private;
 215         struct client_obd *cli = &dev->u.cli;
 216         u64 pages_number;
 217         const char *tmp;
 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         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 229         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 230         if (rc < 0)
 231                 return rc;
 232
 233         pages_number >>= PAGE_SHIFT;
 234
 235         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 236         if (rc > 0) {
 237                 struct lu_env *env;
 238                 __u16 refcheck;
 239
 240                 env = cl_env_get(&refcheck);
 241                 if (!IS_ERR(env)) {
 242                         (void)osc_lru_shrink(env, cli, rc, true);
 243                         cl_env_put(env, &refcheck);
 244                 }
 245         }
 246
 247         return count;
 248 }
 249
 250 LPROC_SEQ_FOPS(osc_cached_mb);
 251
 252 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 253                                     struct attribute *attr,
 254                                     char *buf)
 255 {
 256         struct obd_device *dev = container_of(kobj, struct obd_device,
 257                                               obd_kset.kobj);
 258         struct client_obd *cli = &dev->u.cli;
 259         ssize_t len;
 260
 261         spin_lock(&cli->cl_loi_list_lock);
 262         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 263         spin_unlock(&cli->cl_loi_list_lock);
 264
 265         return len;
 266 }
 267 LUSTRE_RO_ATTR(cur_dirty_bytes);
 268
 269 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 270 {
 271         struct obd_device *dev = m->private;
 272         struct client_obd *cli = &dev->u.cli;
 273
 274         spin_lock(&cli->cl_loi_list_lock);
 275         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 276         spin_unlock(&cli->cl_loi_list_lock);
 277         return 0;
 278 }
 279
 280 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 281                                              const char __user *buffer,
 282                                              size_t count, loff_t *off)
 283 {
 284         struct seq_file *m = file->private_data;
 285         struct obd_device *obd = m->private;
 286         struct client_obd *cli = &obd->u.cli;
 287         char kernbuf[22] = "";
 288         u64 val;
 289         int rc;
 290
 291         if (obd == NULL)
 292                 return 0;
 293
 294         if (count >= sizeof(kernbuf))
 295                 return -EINVAL;
 296
 297         if (copy_from_user(kernbuf, buffer, count))
 298                 return -EFAULT;
 299         kernbuf[count] = 0;
 300
 301         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 302         if (rc < 0)
 303                 return rc;
 304
 305         /* this is only for shrinking grant */
 306         spin_lock(&cli->cl_loi_list_lock);
 307         if (val >= cli->cl_avail_grant) {
 308                 spin_unlock(&cli->cl_loi_list_lock);
 309                 return 0;
 310         }
 311
 312         spin_unlock(&cli->cl_loi_list_lock);
 313
 314         LPROCFS_CLIMP_CHECK(obd);
 315         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 316                 rc = osc_shrink_grant_to_target(cli, val);
 317         LPROCFS_CLIMP_EXIT(obd);
 318
 319         return rc ? rc : count;
 320 }
 321 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 322
 323 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 324                                          struct attribute *attr,
 325                                          char *buf)
 326 {
 327         struct obd_device *dev = container_of(kobj, struct obd_device,
 328                                               obd_kset.kobj);
 329         struct client_obd *cli = &dev->u.cli;
 330         ssize_t len;
 331
 332         spin_lock(&cli->cl_loi_list_lock);
 333         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 334         spin_unlock(&cli->cl_loi_list_lock);
 335         return len;
 336 }
 337 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 338
 339 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 340                                           struct attribute *attr,
 341                                           char *buf)
 342 {
 343         struct obd_device *obd = container_of(kobj, struct obd_device,
 344                                               obd_kset.kobj);
 345
 346         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 347 }
 348
 349 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 350                                            struct attribute *attr,
 351                                            const char *buffer,
 352                                            size_t count)
 353 {
 354         struct obd_device *obd = container_of(kobj, struct obd_device,
 355                                               obd_kset.kobj);
 356         unsigned int val;
 357         int rc;
 358
 359         rc = kstrtouint(buffer, 0, &val);
 360         if (rc)
 361                 return rc;
 362
 363         if (val == 0)
 364                 return -ERANGE;
 365
 366         obd->u.cli.cl_grant_shrink_interval = val;
 367         osc_update_next_shrink(&obd->u.cli);
 368         osc_schedule_grant_work();
 369
 370         return count;
 371 }
 372 LUSTRE_RW_ATTR(grant_shrink_interval);
 373
 374 static ssize_t checksums_show(struct kobject *kobj,
 375                               struct attribute *attr,
 376                               char *buf)
 377 {
 378         struct obd_device *obd = container_of(kobj, struct obd_device,
 379                                               obd_kset.kobj);
 380
 381         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 382 }
 383
 384 static ssize_t checksums_store(struct kobject *kobj,
 385                                struct attribute *attr,
 386                                const char *buffer,
 387                                size_t count)
 388 {
 389         struct obd_device *obd = container_of(kobj, struct obd_device,
 390                                               obd_kset.kobj);
 391         bool val;
 392         int rc;
 393
 394         rc = kstrtobool(buffer, &val);
 395         if (rc)
 396                 return rc;
 397
 398         obd->u.cli.cl_checksum = val;
 399
 400         return count;
 401 }
 402 LUSTRE_RW_ATTR(checksums);
 403
 404 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 405 {
 406         struct obd_device *obd = m->private;
 407         int i;
 408         DECLARE_CKSUM_NAME;
 409
 410         if (obd == NULL)
 411                 return 0;
 412
 413         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 414                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 415                         continue;
 416                 if (obd->u.cli.cl_cksum_type == (1 << i))
 417                         seq_printf(m, "[%s] ", cksum_name[i]);
 418                 else
 419                         seq_printf(m, "%s ", cksum_name[i]);
 420         }
 421         seq_printf(m, "\n");
 422         return 0;
 423 }
 424
 425 static ssize_t osc_checksum_type_seq_write(struct file *file,
 426                                            const char __user *buffer,
 427                                            size_t count, loff_t *off)
 428 {
 429         struct seq_file *m = file->private_data;
 430         struct obd_device *obd = m->private;
 431         int i;
 432         DECLARE_CKSUM_NAME;
 433         char kernbuf[10];
 434         int rc = -EINVAL;
 435
 436         if (obd == NULL)
 437                 return 0;
 438
 439         if (count > sizeof(kernbuf) - 1)
 440                 return -EINVAL;
 441         if (copy_from_user(kernbuf, buffer, count))
 442                 return -EFAULT;
 443
 444         if (count > 0 && kernbuf[count - 1] == '\n')
 445                 kernbuf[count - 1] = '\0';
 446         else
 447                 kernbuf[count] = '\0';
 448
 449         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 450                 if (strcmp(kernbuf, cksum_name[i]) == 0) {
 451                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 452                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 453                                 obd->u.cli.cl_cksum_type = BIT(i);
 454                                 rc = count;
 455                         } else {
 456                                 rc = -ENOTSUPP;
 457                         }
 458                         break;
 459                 }
 460         }
 461         return rc;
 462 }
 463 LPROC_SEQ_FOPS(osc_checksum_type);
 464
 465 static ssize_t resend_count_show(struct kobject *kobj,
 466                                  struct attribute *attr,
 467                                  char *buf)
 468 {
 469         struct obd_device *obd = container_of(kobj, struct obd_device,
 470                                               obd_kset.kobj);
 471
 472         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 473 }
 474
 475 static ssize_t resend_count_store(struct kobject *kobj,
 476                                   struct attribute *attr,
 477                                   const char *buffer,
 478                                   size_t count)
 479 {
 480         struct obd_device *obd = container_of(kobj, struct obd_device,
 481                                               obd_kset.kobj);
 482         unsigned int val;
 483         int rc;
 484
 485         rc = kstrtouint(buffer, 10, &val);
 486         if (rc)
 487                 return rc;
 488
 489         atomic_set(&obd->u.cli.cl_resends, val);
 490
 491         return count;
 492 }
 493 LUSTRE_RW_ATTR(resend_count);
 494
 495 static ssize_t checksum_dump_show(struct kobject *kobj,
 496                                   struct attribute *attr,
 497                                   char *buf)
 498 {
 499         struct obd_device *obd = container_of(kobj, struct obd_device,
 500                                               obd_kset.kobj);
 501
 502         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 503 }
 504
 505 static ssize_t checksum_dump_store(struct kobject *kobj,
 506                                    struct attribute *attr,
 507                                    const char *buffer,
 508                                    size_t count)
 509 {
 510         struct obd_device *obd = container_of(kobj, struct obd_device,
 511                                               obd_kset.kobj);
 512         bool val;
 513         int rc;
 514
 515         rc = kstrtobool(buffer, &val);
 516         if (rc)
 517                 return rc;
 518
 519         obd->u.cli.cl_checksum_dump = val;
 520
 521         return count;
 522 }
 523 LUSTRE_RW_ATTR(checksum_dump);
 524
 525 static ssize_t contention_seconds_show(struct kobject *kobj,
 526                                        struct attribute *attr,
 527                                        char *buf)
 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
 533         return sprintf(buf, "%lld\n", od->od_contention_time);
 534 }
 535
 536 static ssize_t contention_seconds_store(struct kobject *kobj,
 537                                         struct attribute *attr,
 538                                         const char *buffer,
 539                                         size_t count)
 540 {
 541         struct obd_device *obd = container_of(kobj, struct obd_device,
 542                                               obd_kset.kobj);
 543         struct osc_device *od = obd2osc_dev(obd);
 544         unsigned int val;
 545         int rc;
 546
 547         rc = kstrtouint(buffer, 0, &val);
 548         if (rc)
 549                 return rc;
 550
 551         od->od_contention_time = val;
 552
 553         return count;
 554 }
 555 LUSTRE_RW_ATTR(contention_seconds);
 556
 557 static ssize_t lockless_truncate_show(struct kobject *kobj,
 558                                       struct attribute *attr,
 559                                       char *buf)
 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
 565         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 566 }
 567
 568 static ssize_t lockless_truncate_store(struct kobject *kobj,
 569                                        struct attribute *attr,
 570                                        const char *buffer,
 571                                        size_t count)
 572 {
 573         struct obd_device *obd = container_of(kobj, struct obd_device,
 574                                               obd_kset.kobj);
 575         struct osc_device *od = obd2osc_dev(obd);
 576         bool val;
 577         int rc;
 578
 579         rc = kstrtobool(buffer, &val);
 580         if (rc)
 581                 return rc;
 582
 583         od->od_lockless_truncate = val;
 584
 585         return count;
 586 }
 587 LUSTRE_RW_ATTR(lockless_truncate);
 588
 589 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 590                                        struct attribute *attr,
 591                                        char *buf)
 592 {
 593         struct obd_device *obd = container_of(kobj, struct obd_device,
 594                                               obd_kset.kobj);
 595
 596         return sprintf(buf, "%u\n",
 597                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 598 }
 599 LUSTRE_RO_ATTR(destroys_in_flight);
 600
 601 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 602
 603 LUSTRE_RW_ATTR(short_io_bytes);
 604
 605 #ifdef CONFIG_PROC_FS
 606 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 607 {
 608         struct obd_device *dev = m->private;
 609         struct client_obd *cli = &dev->u.cli;
 610         long pages;
 611         int mb;
 612
 613         pages = atomic_long_read(&cli->cl_unstable_count);
 614         mb    = (pages * PAGE_SIZE) >> 20;
 615
 616         seq_printf(m, "unstable_pages: %20ld\n"
 617                    "unstable_mb:              %10d\n",
 618                    pages, mb);
 619         return 0;
 620 }
 621 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 622
 623 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 624                                  char *buf)
 625 {
 626         struct obd_device *obd = container_of(kobj, struct obd_device,
 627                                               obd_kset.kobj);
 628         struct client_obd *cli = &obd->u.cli;
 629         int ret;
 630
 631         LPROCFS_CLIMP_CHECK(obd);
 632         ret = sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 633         LPROCFS_CLIMP_EXIT(obd);
 634
 635         return ret;
 636 }
 637
 638 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 639                                   const char *buffer, size_t count)
 640 {
 641         struct obd_device *dev = container_of(kobj, struct obd_device,
 642                                               obd_kset.kobj);
 643         struct client_obd *cli = &dev->u.cli;
 644         struct ptlrpc_request *req;
 645         unsigned int idle_debug = 0;
 646         unsigned int val;
 647         int rc;
 648
 649         if (strncmp(buffer, "debug", 5) == 0) {
 650                 idle_debug = D_CONSOLE;
 651         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 652                 idle_debug = D_HA;
 653         } else {
 654                 rc = kstrtouint(buffer, 10, &val);
 655                 if (rc)
 656                         return rc;
 657
 658                 if (val > CONNECTION_SWITCH_MAX)
 659                         return -ERANGE;
 660         }
 661
 662         LPROCFS_CLIMP_CHECK(dev);
 663         if (idle_debug) {
 664                 cli->cl_import->imp_idle_debug = idle_debug;
 665         } else {
 666                 if (!val) {
 667                         /* initiate the connection if it's in IDLE state */
 668                         req = ptlrpc_request_alloc(cli->cl_import,
 669                                                    &RQF_OST_STATFS);
 670                         if (req != NULL)
 671                                 ptlrpc_req_finished(req);
 672                 }
 673                 cli->cl_import->imp_idle_timeout = val;
 674         }
 675         LPROCFS_CLIMP_EXIT(dev);
 676
 677         return count;
 678 }
 679 LUSTRE_RW_ATTR(idle_timeout);
 680
 681 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 682                                   const char *buffer, size_t count)
 683 {
 684         struct obd_device *dev = container_of(kobj, struct obd_device,
 685                                               obd_kset.kobj);
 686         struct client_obd *cli = &dev->u.cli;
 687         struct ptlrpc_request *req;
 688
 689         LPROCFS_CLIMP_CHECK(dev);
 690         /* to initiate the connection if it's in IDLE state */
 691         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 692         if (req)
 693                 ptlrpc_req_finished(req);
 694         ptlrpc_pinger_force(cli->cl_import);
 695         LPROCFS_CLIMP_EXIT(dev);
 696
 697         return count;
 698 }
 699 LUSTRE_WO_ATTR(idle_connect);
 700
 701 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 702                                  char *buf)
 703 {
 704         struct obd_device *obd = container_of(kobj, struct obd_device,
 705                                               obd_kset.kobj);
 706         struct obd_import *imp;
 707         ssize_t len;
 708
 709         LPROCFS_CLIMP_CHECK(obd);
 710         imp = obd->u.cli.cl_import;
 711         len = scnprintf(buf, PAGE_SIZE, "%d\n",
 712                         !imp->imp_grant_shrink_disabled &&
 713                         OCD_HAS_FLAG(&imp->imp_connect_data, GRANT_SHRINK));
 714         LPROCFS_CLIMP_EXIT(obd);
 715
 716         return len;
 717 }
 718
 719 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 720                                   const char *buffer, size_t count)
 721 {
 722         struct obd_device *dev = container_of(kobj, struct obd_device,
 723                                               obd_kset.kobj);
 724         struct obd_import *imp;
 725         bool val;
 726         int rc;
 727
 728         if (dev == NULL)
 729                 return 0;
 730
 731         rc = kstrtobool(buffer, &val);
 732         if (rc)
 733                 return rc;
 734
 735         LPROCFS_CLIMP_CHECK(dev);
 736
 737         imp = dev->u.cli.cl_import;
 738         spin_lock(&imp->imp_lock);
 739         imp->imp_grant_shrink_disabled = !val;
 740         spin_unlock(&imp->imp_lock);
 741
 742         LPROCFS_CLIMP_EXIT(dev);
 743
 744         return count;
 745 }
 746 LUSTRE_RW_ATTR(grant_shrink);
 747
 748 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 749 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 750 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 751 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 752
 753 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 754 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 755
 756 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 757         { .name =       "connect_flags",
 758           .fops =       &osc_connect_flags_fops         },
 759         { .name =       "ost_server_uuid",
 760           .fops =       &osc_server_uuid_fops           },
 761         { .name =       "max_pages_per_rpc",
 762           .fops =       &osc_obd_max_pages_per_rpc_fops },
 763         { .name =       "osc_cached_mb",
 764           .fops =       &osc_cached_mb_fops             },
 765         { .name =       "cur_grant_bytes",
 766           .fops =       &osc_cur_grant_bytes_fops       },
 767         { .name =       "checksum_type",
 768           .fops =       &osc_checksum_type_fops         },
 769         { .name =       "timeouts",
 770           .fops =       &osc_timeouts_fops              },
 771         { .name =       "import",
 772           .fops =       &osc_import_fops                },
 773         { .name =       "state",
 774           .fops =       &osc_state_fops                 },
 775         { .name =       "pinger_recov",
 776           .fops =       &osc_pinger_recov_fops          },
 777         { .name =       "unstable_stats",
 778           .fops =       &osc_unstable_stats_fops        },
 779         { NULL }
 780 };
 781
 782 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 783 {
 784         struct timespec64 now;
 785         struct obd_device *dev = seq->private;
 786         struct client_obd *cli = &dev->u.cli;
 787         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 788         int i;
 789
 790         ktime_get_real_ts64(&now);
 791
 792         spin_lock(&cli->cl_loi_list_lock);
 793
 794         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 795                    (s64)now.tv_sec, now.tv_nsec);
 796         seq_printf(seq, "read RPCs in flight:  %d\n",
 797                    cli->cl_r_in_flight);
 798         seq_printf(seq, "write RPCs in flight: %d\n",
 799                    cli->cl_w_in_flight);
 800         seq_printf(seq, "pending write pages:  %d\n",
 801                    atomic_read(&cli->cl_pending_w_pages));
 802         seq_printf(seq, "pending read pages:   %d\n",
 803                    atomic_read(&cli->cl_pending_r_pages));
 804
 805         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 806         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 807         seq_printf(seq, "       rpcs   %% cum %%\n");
 808
 809         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 810         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 811
 812         read_cum = 0;
 813         write_cum = 0;
 814         for (i = 0; i < OBD_HIST_MAX; i++) {
 815                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 816                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 817
 818                 read_cum += r;
 819                 write_cum += w;
 820                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 821                            1 << i, r, pct(r, read_tot),
 822                            pct(read_cum, read_tot), w,
 823                            pct(w, write_tot),
 824                            pct(write_cum, write_tot));
 825                 if (read_cum == read_tot && write_cum == write_tot)
 826                         break;
 827         }
 828
 829         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 830         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 831         seq_printf(seq, "       rpcs   %% cum %%\n");
 832
 833         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 834         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 835
 836         read_cum = 0;
 837         write_cum = 0;
 838         for (i = 0; i < OBD_HIST_MAX; i++) {
 839                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 840                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 841                 read_cum += r;
 842                 write_cum += w;
 843                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 844                            i, r, pct(r, read_tot),
 845                            pct(read_cum, read_tot), w,
 846                            pct(w, write_tot),
 847                            pct(write_cum, write_tot));
 848                 if (read_cum == read_tot && write_cum == write_tot)
 849                         break;
 850         }
 851
 852         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 853         seq_printf(seq, "offset                rpcs   %% cum %% |");
 854         seq_printf(seq, "       rpcs   %% cum %%\n");
 855
 856         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 857         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 858
 859         read_cum = 0;
 860         write_cum = 0;
 861         for (i = 0; i < OBD_HIST_MAX; i++) {
 862                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 863                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 864                 read_cum += r;
 865                 write_cum += w;
 866                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 867                            (i == 0) ? 0 : 1 << (i - 1),
 868                            r, pct(r, read_tot), pct(read_cum, read_tot),
 869                            w, pct(w, write_tot), pct(write_cum, write_tot));
 870                 if (read_cum == read_tot && write_cum == write_tot)
 871                         break;
 872         }
 873
 874         spin_unlock(&cli->cl_loi_list_lock);
 875
 876         return 0;
 877 }
 878
 879 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 880                                        const char __user *buf,
 881                                        size_t len, loff_t *off)
 882 {
 883         struct seq_file *seq = file->private_data;
 884         struct obd_device *dev = seq->private;
 885         struct client_obd *cli = &dev->u.cli;
 886
 887         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 888         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 889         lprocfs_oh_clear(&cli->cl_read_page_hist);
 890         lprocfs_oh_clear(&cli->cl_write_page_hist);
 891         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 892         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 893
 894         return len;
 895 }
 896 LPROC_SEQ_FOPS(osc_rpc_stats);
 897
 898 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 899 {
 900         struct timespec64 now;
 901         struct obd_device *dev = seq->private;
 902         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 903
 904         ktime_get_real_ts64(&now);
 905
 906         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 907                    (s64)now.tv_sec, now.tv_nsec);
 908         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 909                    stats->os_lockless_writes);
 910         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 911                    stats->os_lockless_reads);
 912         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 913                    stats->os_lockless_truncates);
 914         return 0;
 915 }
 916
 917 static ssize_t osc_stats_seq_write(struct file *file,
 918                                    const char __user *buf,
 919                                    size_t len, loff_t *off)
 920 {
 921         struct seq_file *seq = file->private_data;
 922         struct obd_device *dev = seq->private;
 923         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 924
 925         memset(stats, 0, sizeof(*stats));
 926         return len;
 927 }
 928
 929 LPROC_SEQ_FOPS(osc_stats);
 930
 931 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 932 {
 933         int rc;
 934
 935         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 936                                 &osc_stats_fops, dev);
 937         if (rc == 0)
 938                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 939                                             &osc_rpc_stats_fops, dev);
 940
 941         return rc;
 942 }
 943 #endif /* CONFIG_PROC_FS */
 944
 945 static struct attribute *osc_attrs[] = {
 946         &lustre_attr_active.attr,
 947         &lustre_attr_checksums.attr,
 948         &lustre_attr_checksum_dump.attr,
 949         &lustre_attr_contention_seconds.attr,
 950         &lustre_attr_cur_dirty_bytes.attr,
 951         &lustre_attr_cur_lost_grant_bytes.attr,
 952         &lustre_attr_destroys_in_flight.attr,
 953         &lustre_attr_grant_shrink_interval.attr,
 954         &lustre_attr_lockless_truncate.attr,
 955         &lustre_attr_max_dirty_mb.attr,
 956         &lustre_attr_max_rpcs_in_flight.attr,
 957         &lustre_attr_short_io_bytes.attr,
 958         &lustre_attr_resend_count.attr,
 959         &lustre_attr_ost_conn_uuid.attr,
 960         &lustre_attr_conn_uuid.attr,
 961         &lustre_attr_ping.attr,
 962         &lustre_attr_idle_timeout.attr,
 963         &lustre_attr_idle_connect.attr,
 964         &lustre_attr_grant_shrink.attr,
 965         NULL,
 966 };
 967
 968 int osc_tunables_init(struct obd_device *obd)
 969 {
 970         int rc;
 971
 972         obd->obd_vars = lprocfs_osc_obd_vars;
 973         obd->obd_ktype.default_attrs = osc_attrs;
 974         rc = lprocfs_obd_setup(obd, false);
 975         if (rc)
 976                 return rc;
 977 #ifdef CONFIG_PROC_FS
 978         /* If the basic OSC proc tree construction succeeded then
 979          * lets do the rest.
 980          */
 981         rc = lprocfs_osc_attach_seqstat(obd);
 982         if (rc)
 983                 goto obd_cleanup;
 984
 985 #endif /* CONFIG_PROC_FS */
 986         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 987         if (rc)
 988                 goto obd_cleanup;
 989
 990         ptlrpc_lprocfs_register_obd(obd);
 991 obd_cleanup:
 992         if (rc)
 993                 lprocfs_obd_cleanup(obd);
 994         return rc;
 995 }