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 *obd = container_of(kobj, struct obd_device,
  48                                               obd_kset.kobj);
  49         struct obd_import *imp;
  50         int rc;
  51
  52         with_imp_locked(obd, imp, rc)
  53                 rc = sprintf(buf, "%d\n", !imp->imp_deactive);
  54
  55         return rc;
  56 }
  57
  58 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  59                             const char *buffer, size_t count)
  60 {
  61         struct obd_device *obd = container_of(kobj, struct obd_device,
  62                                               obd_kset.kobj);
  63         bool val;
  64         int rc;
  65
  66         rc = kstrtobool(buffer, &val);
  67         if (rc)
  68                 return rc;
  69
  70         /* opposite senses */
  71         if (obd->u.cli.cl_import->imp_deactive == val)
  72                 rc = ptlrpc_set_import_active(obd->u.cli.cl_import, val);
  73         else
  74                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  75                        (unsigned int)val);
  76
  77         return count;
  78 }
  79 LUSTRE_RW_ATTR(active);
  80
  81 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  82                                        struct attribute *attr,
  83                                        char *buf)
  84 {
  85         struct obd_device *obd = container_of(kobj, struct obd_device,
  86                                               obd_kset.kobj);
  87         struct client_obd *cli = &obd->u.cli;
  88         ssize_t len;
  89
  90         spin_lock(&cli->cl_loi_list_lock);
  91         len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
  92         spin_unlock(&cli->cl_loi_list_lock);
  93         return len;
  94 }
  95
  96 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  97                                         struct attribute *attr,
  98                                         const char *buffer,
  99                                         size_t count)
 100 {
 101         struct obd_device *obd = container_of(kobj, struct obd_device,
 102                                               obd_kset.kobj);
 103         struct client_obd *cli = &obd->u.cli;
 104         int adding, added, req_count;
 105         unsigned int val;
 106         int rc;
 107
 108         rc = kstrtouint(buffer, 0, &val);
 109         if (rc)
 110                 return rc;
 111
 112         if (val == 0 || val > OSC_MAX_RIF_MAX)
 113                 return -ERANGE;
 114
 115         adding = (int)val - cli->cl_max_rpcs_in_flight;
 116         req_count = atomic_read(&osc_pool_req_count);
 117         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 118                 /*
 119                  * There might be some race which will cause over-limit
 120                  * allocation, but it is fine.
 121                  */
 122                 if (req_count + adding > osc_reqpool_maxreqcount)
 123                         adding = osc_reqpool_maxreqcount - req_count;
 124
 125                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 126                 atomic_add(added, &osc_pool_req_count);
 127         }
 128
 129         spin_lock(&cli->cl_loi_list_lock);
 130         cli->cl_max_rpcs_in_flight = val;
 131         client_adjust_max_dirty(cli);
 132         spin_unlock(&cli->cl_loi_list_lock);
 133
 134         return count;
 135 }
 136 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 137
 138 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 139                                  struct attribute *attr,
 140                                  char *buf)
 141 {
 142         struct obd_device *obd = container_of(kobj, struct obd_device,
 143                                               obd_kset.kobj);
 144         struct client_obd *cli = &obd->u.cli;
 145         unsigned long val;
 146
 147         spin_lock(&cli->cl_loi_list_lock);
 148         val = PAGES_TO_MiB(cli->cl_dirty_max_pages);
 149         spin_unlock(&cli->cl_loi_list_lock);
 150
 151         return sprintf(buf, "%lu\n", val);
 152 }
 153
 154 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 155                                   struct attribute *attr,
 156                                   const char *buffer,
 157                                   size_t count)
 158 {
 159         struct obd_device *obd = container_of(kobj, struct obd_device,
 160                                               obd_kset.kobj);
 161         struct client_obd *cli = &obd->u.cli;
 162         unsigned long pages_number, max_dirty_mb;
 163         int rc;
 164
 165         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 166         if (rc)
 167                 return rc;
 168
 169         pages_number = MiB_TO_PAGES(max_dirty_mb);
 170
 171         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 172             pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
 173                 return -ERANGE;
 174
 175         spin_lock(&cli->cl_loi_list_lock);
 176         cli->cl_dirty_max_pages = pages_number;
 177         osc_wake_cache_waiters(cli);
 178         spin_unlock(&cli->cl_loi_list_lock);
 179
 180         return count;
 181 }
 182 LUSTRE_RW_ATTR(max_dirty_mb);
 183
 184 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 185 LUSTRE_RO_ATTR(conn_uuid);
 186
 187 LUSTRE_RW_ATTR(ping);
 188
 189 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 190 {
 191         struct obd_device *obd = m->private;
 192         struct client_obd *cli = &obd->u.cli;
 193         int shift = 20 - PAGE_SHIFT;
 194
 195         seq_printf(m, "used_mb: %ld\n"
 196                    "busy_cnt: %ld\n"
 197                    "reclaim: %llu\n",
 198                    (atomic_long_read(&cli->cl_lru_in_list) +
 199                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 200                     atomic_long_read(&cli->cl_lru_busy),
 201                    cli->cl_lru_reclaim);
 202
 203         return 0;
 204 }
 205
 206 /* shrink the number of caching pages to a specific number */
 207 static ssize_t osc_cached_mb_seq_write(struct file *file,
 208                                        const char __user *buffer,
 209                                        size_t count, loff_t *off)
 210 {
 211         struct seq_file *m = file->private_data;
 212         struct obd_device *obd = m->private;
 213         struct client_obd *cli = &obd->u.cli;
 214         u64 pages_number;
 215         const char *tmp;
 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         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 227         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 228         if (rc < 0)
 229                 return rc;
 230
 231         pages_number >>= PAGE_SHIFT;
 232
 233         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 234         if (rc > 0) {
 235                 struct lu_env *env;
 236                 __u16 refcheck;
 237
 238                 env = cl_env_get(&refcheck);
 239                 if (!IS_ERR(env)) {
 240                         (void)osc_lru_shrink(env, cli, rc, true);
 241                         cl_env_put(env, &refcheck);
 242                 }
 243         }
 244
 245         return count;
 246 }
 247
 248 LPROC_SEQ_FOPS(osc_cached_mb);
 249
 250 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 251                                     struct attribute *attr,
 252                                     char *buf)
 253 {
 254         struct obd_device *obd = container_of(kobj, struct obd_device,
 255                                               obd_kset.kobj);
 256         struct client_obd *cli = &obd->u.cli;
 257         ssize_t len;
 258
 259         spin_lock(&cli->cl_loi_list_lock);
 260         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 261         spin_unlock(&cli->cl_loi_list_lock);
 262
 263         return len;
 264 }
 265 LUSTRE_RO_ATTR(cur_dirty_bytes);
 266
 267 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 268 {
 269         struct obd_device *obd = m->private;
 270         struct client_obd *cli = &obd->u.cli;
 271
 272         spin_lock(&cli->cl_loi_list_lock);
 273         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 274         spin_unlock(&cli->cl_loi_list_lock);
 275         return 0;
 276 }
 277
 278 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 279                                              const char __user *buffer,
 280                                              size_t count, loff_t *off)
 281 {
 282         struct seq_file *m = file->private_data;
 283         struct obd_device *obd = m->private;
 284         struct client_obd *cli = &obd->u.cli;
 285         struct obd_import *imp;
 286         char kernbuf[22] = "";
 287         u64 val;
 288         int rc;
 289
 290         if (obd == NULL)
 291                 return 0;
 292
 293         if (count >= sizeof(kernbuf))
 294                 return -EINVAL;
 295
 296         if (copy_from_user(kernbuf, buffer, count))
 297                 return -EFAULT;
 298         kernbuf[count] = 0;
 299
 300         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 301         if (rc < 0)
 302                 return rc;
 303
 304         /* this is only for shrinking grant */
 305         spin_lock(&cli->cl_loi_list_lock);
 306         if (val >= cli->cl_avail_grant) {
 307                 spin_unlock(&cli->cl_loi_list_lock);
 308                 return 0;
 309         }
 310
 311         spin_unlock(&cli->cl_loi_list_lock);
 312
 313         with_imp_locked(obd, imp, rc)
 314                 if (imp->imp_state == LUSTRE_IMP_FULL)
 315                         rc = osc_shrink_grant_to_target(cli, val);
 316
 317         return rc ? rc : count;
 318 }
 319 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 320
 321 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 322                                          struct attribute *attr,
 323                                          char *buf)
 324 {
 325         struct obd_device *obd = container_of(kobj, struct obd_device,
 326                                               obd_kset.kobj);
 327         struct client_obd *cli = &obd->u.cli;
 328         ssize_t len;
 329
 330         spin_lock(&cli->cl_loi_list_lock);
 331         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 332         spin_unlock(&cli->cl_loi_list_lock);
 333         return len;
 334 }
 335 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 336
 337 static ssize_t cur_dirty_grant_bytes_show(struct kobject *kobj,
 338                                           struct attribute *attr,
 339                                           char *buf)
 340 {
 341         struct obd_device *obd = container_of(kobj, struct obd_device,
 342                                               obd_kset.kobj);
 343         struct client_obd *cli = &obd->u.cli;
 344
 345         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_dirty_grant);
 346 }
 347 LUSTRE_RO_ATTR(cur_dirty_grant_bytes);
 348
 349 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 350                                           struct attribute *attr,
 351                                           char *buf)
 352 {
 353         struct obd_device *obd = container_of(kobj, struct obd_device,
 354                                               obd_kset.kobj);
 355
 356         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 357 }
 358
 359 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 360                                            struct attribute *attr,
 361                                            const char *buffer,
 362                                            size_t count)
 363 {
 364         struct obd_device *obd = container_of(kobj, struct obd_device,
 365                                               obd_kset.kobj);
 366         unsigned int val;
 367         int rc;
 368
 369         rc = kstrtouint(buffer, 0, &val);
 370         if (rc)
 371                 return rc;
 372
 373         if (val == 0)
 374                 return -ERANGE;
 375
 376         obd->u.cli.cl_grant_shrink_interval = val;
 377         osc_update_next_shrink(&obd->u.cli);
 378         osc_schedule_grant_work();
 379
 380         return count;
 381 }
 382 LUSTRE_RW_ATTR(grant_shrink_interval);
 383
 384 static ssize_t checksums_show(struct kobject *kobj,
 385                               struct attribute *attr,
 386                               char *buf)
 387 {
 388         struct obd_device *obd = container_of(kobj, struct obd_device,
 389                                               obd_kset.kobj);
 390
 391         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 392 }
 393
 394 static ssize_t checksums_store(struct kobject *kobj,
 395                                struct attribute *attr,
 396                                const char *buffer,
 397                                size_t count)
 398 {
 399         struct obd_device *obd = container_of(kobj, struct obd_device,
 400                                               obd_kset.kobj);
 401         bool val;
 402         int rc;
 403
 404         rc = kstrtobool(buffer, &val);
 405         if (rc)
 406                 return rc;
 407
 408         obd->u.cli.cl_checksum = val;
 409
 410         return count;
 411 }
 412 LUSTRE_RW_ATTR(checksums);
 413
 414 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 415 {
 416         struct obd_device *obd = m->private;
 417         int i;
 418         DECLARE_CKSUM_NAME;
 419
 420         if (obd == NULL)
 421                 return 0;
 422
 423         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 424                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 425                         continue;
 426                 if (obd->u.cli.cl_cksum_type == BIT(i))
 427                         seq_printf(m, "[%s] ", cksum_name[i]);
 428                 else
 429                         seq_printf(m, "%s ", cksum_name[i]);
 430         }
 431         seq_printf(m, "\n");
 432         return 0;
 433 }
 434
 435 static ssize_t osc_checksum_type_seq_write(struct file *file,
 436                                            const char __user *buffer,
 437                                            size_t count, loff_t *off)
 438 {
 439         struct seq_file *m = file->private_data;
 440         struct obd_device *obd = m->private;
 441         int i;
 442         DECLARE_CKSUM_NAME;
 443         char kernbuf[10];
 444         int rc = -EINVAL;
 445
 446         if (obd == NULL)
 447                 return 0;
 448
 449         if (count > sizeof(kernbuf) - 1)
 450                 return -EINVAL;
 451         if (copy_from_user(kernbuf, buffer, count))
 452                 return -EFAULT;
 453
 454         if (count > 0 && kernbuf[count - 1] == '\n')
 455                 kernbuf[count - 1] = '\0';
 456         else
 457                 kernbuf[count] = '\0';
 458
 459         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 460                 if (strcmp(kernbuf, cksum_name[i]) == 0) {
 461                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 462                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 463                                 obd->u.cli.cl_cksum_type = BIT(i);
 464                                 rc = count;
 465                         } else {
 466                                 rc = -ENOTSUPP;
 467                         }
 468                         break;
 469                 }
 470         }
 471         return rc;
 472 }
 473 LPROC_SEQ_FOPS(osc_checksum_type);
 474
 475 static ssize_t resend_count_show(struct kobject *kobj,
 476                                  struct attribute *attr,
 477                                  char *buf)
 478 {
 479         struct obd_device *obd = container_of(kobj, struct obd_device,
 480                                               obd_kset.kobj);
 481
 482         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 483 }
 484
 485 static ssize_t resend_count_store(struct kobject *kobj,
 486                                   struct attribute *attr,
 487                                   const char *buffer,
 488                                   size_t count)
 489 {
 490         struct obd_device *obd = container_of(kobj, struct obd_device,
 491                                               obd_kset.kobj);
 492         unsigned int val;
 493         int rc;
 494
 495         rc = kstrtouint(buffer, 10, &val);
 496         if (rc)
 497                 return rc;
 498
 499         atomic_set(&obd->u.cli.cl_resends, val);
 500
 501         return count;
 502 }
 503 LUSTRE_RW_ATTR(resend_count);
 504
 505 static ssize_t checksum_dump_show(struct kobject *kobj,
 506                                   struct attribute *attr,
 507                                   char *buf)
 508 {
 509         struct obd_device *obd = container_of(kobj, struct obd_device,
 510                                               obd_kset.kobj);
 511
 512         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 513 }
 514
 515 static ssize_t checksum_dump_store(struct kobject *kobj,
 516                                    struct attribute *attr,
 517                                    const char *buffer,
 518                                    size_t count)
 519 {
 520         struct obd_device *obd = container_of(kobj, struct obd_device,
 521                                               obd_kset.kobj);
 522         bool val;
 523         int rc;
 524
 525         rc = kstrtobool(buffer, &val);
 526         if (rc)
 527                 return rc;
 528
 529         obd->u.cli.cl_checksum_dump = val;
 530
 531         return count;
 532 }
 533 LUSTRE_RW_ATTR(checksum_dump);
 534
 535 static ssize_t contention_seconds_show(struct kobject *kobj,
 536                                        struct attribute *attr,
 537                                        char *buf)
 538 {
 539         struct obd_device *obd = container_of(kobj, struct obd_device,
 540                                               obd_kset.kobj);
 541         struct osc_device *od = obd2osc_dev(obd);
 542
 543         return sprintf(buf, "%lld\n", od->od_contention_time);
 544 }
 545
 546 static ssize_t contention_seconds_store(struct kobject *kobj,
 547                                         struct attribute *attr,
 548                                         const char *buffer,
 549                                         size_t count)
 550 {
 551         struct obd_device *obd = container_of(kobj, struct obd_device,
 552                                               obd_kset.kobj);
 553         struct osc_device *od = obd2osc_dev(obd);
 554         unsigned int val;
 555         int rc;
 556
 557         rc = kstrtouint(buffer, 0, &val);
 558         if (rc)
 559                 return rc;
 560
 561         od->od_contention_time = val;
 562
 563         return count;
 564 }
 565 LUSTRE_RW_ATTR(contention_seconds);
 566
 567 static ssize_t lockless_truncate_show(struct kobject *kobj,
 568                                       struct attribute *attr,
 569                                       char *buf)
 570 {
 571         struct obd_device *obd = container_of(kobj, struct obd_device,
 572                                               obd_kset.kobj);
 573         struct osc_device *od = obd2osc_dev(obd);
 574
 575         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 576 }
 577
 578 static ssize_t lockless_truncate_store(struct kobject *kobj,
 579                                        struct attribute *attr,
 580                                        const char *buffer,
 581                                        size_t count)
 582 {
 583         struct obd_device *obd = container_of(kobj, struct obd_device,
 584                                               obd_kset.kobj);
 585         struct osc_device *od = obd2osc_dev(obd);
 586         bool val;
 587         int rc;
 588
 589         rc = kstrtobool(buffer, &val);
 590         if (rc)
 591                 return rc;
 592
 593         od->od_lockless_truncate = val;
 594
 595         return count;
 596 }
 597 LUSTRE_RW_ATTR(lockless_truncate);
 598
 599 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 600                                        struct attribute *attr,
 601                                        char *buf)
 602 {
 603         struct obd_device *obd = container_of(kobj, struct obd_device,
 604                                               obd_kset.kobj);
 605
 606         return sprintf(buf, "%u\n",
 607                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 608 }
 609 LUSTRE_RO_ATTR(destroys_in_flight);
 610
 611 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 612
 613 LUSTRE_RW_ATTR(short_io_bytes);
 614
 615 #ifdef CONFIG_PROC_FS
 616 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 617 {
 618         struct obd_device *obd = m->private;
 619         struct client_obd *cli = &obd->u.cli;
 620         long pages;
 621         int mb;
 622
 623         pages = atomic_long_read(&cli->cl_unstable_count);
 624         mb    = (pages * PAGE_SIZE) >> 20;
 625
 626         seq_printf(m, "unstable_pages: %20ld\n"
 627                    "unstable_mb:              %10d\n",
 628                    pages, mb);
 629         return 0;
 630 }
 631 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 632
 633 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 634                                  char *buf)
 635 {
 636         struct obd_device *obd = container_of(kobj, struct obd_device,
 637                                               obd_kset.kobj);
 638         struct obd_import *imp;
 639         int ret;
 640
 641         with_imp_locked(obd, imp, ret)
 642                 ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
 643
 644         return ret;
 645 }
 646
 647 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 648                                   const char *buffer, size_t count)
 649 {
 650         struct obd_device *obd = container_of(kobj, struct obd_device,
 651                                               obd_kset.kobj);
 652         struct obd_import *imp;
 653         struct ptlrpc_request *req;
 654         unsigned int idle_debug = 0;
 655         unsigned int val;
 656         int rc;
 657
 658         if (strncmp(buffer, "debug", 5) == 0) {
 659                 idle_debug = D_CONSOLE;
 660         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 661                 idle_debug = D_HA;
 662         } else {
 663                 rc = kstrtouint(buffer, 10, &val);
 664                 if (rc)
 665                         return rc;
 666
 667                 if (val > CONNECTION_SWITCH_MAX)
 668                         return -ERANGE;
 669         }
 670
 671         with_imp_locked(obd, imp, rc) {
 672                 if (idle_debug) {
 673                         imp->imp_idle_debug = idle_debug;
 674                 } else {
 675                         if (!val) {
 676                                 /* initiate the connection if it's in IDLE state */
 677                                 req = ptlrpc_request_alloc(imp,
 678                                                            &RQF_OST_STATFS);
 679                                 if (req != NULL)
 680                                         ptlrpc_req_finished(req);
 681                         }
 682                         imp->imp_idle_timeout = val;
 683                 }
 684         }
 685
 686         return count;
 687 }
 688 LUSTRE_RW_ATTR(idle_timeout);
 689
 690 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 691                                   const char *buffer, size_t count)
 692 {
 693         struct obd_device *obd = container_of(kobj, struct obd_device,
 694                                               obd_kset.kobj);
 695         struct obd_import *imp;
 696         struct ptlrpc_request *req;
 697         int rc;
 698
 699         with_imp_locked(obd, imp, rc) {
 700                 /* to initiate the connection if it's in IDLE state */
 701                 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
 702                 if (req)
 703                         ptlrpc_req_finished(req);
 704                 ptlrpc_pinger_force(imp);
 705         }
 706
 707         return rc ?: count;
 708 }
 709 LUSTRE_WO_ATTR(idle_connect);
 710
 711 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 712                                  char *buf)
 713 {
 714         struct obd_device *obd = container_of(kobj, struct obd_device,
 715                                               obd_kset.kobj);
 716         struct obd_import *imp;
 717         ssize_t len;
 718
 719         with_imp_locked(obd, imp, len)
 720                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 721                                 !imp->imp_grant_shrink_disabled &&
 722                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 723                                              GRANT_SHRINK));
 724
 725         return len;
 726 }
 727
 728 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 729                                   const char *buffer, size_t count)
 730 {
 731         struct obd_device *obd = container_of(kobj, struct obd_device,
 732                                               obd_kset.kobj);
 733         struct obd_import *imp;
 734         bool val;
 735         int rc;
 736
 737         if (obd == NULL)
 738                 return 0;
 739
 740         rc = kstrtobool(buffer, &val);
 741         if (rc)
 742                 return rc;
 743
 744         with_imp_locked(obd, imp, rc) {
 745                 spin_lock(&imp->imp_lock);
 746                 imp->imp_grant_shrink_disabled = !val;
 747                 spin_unlock(&imp->imp_lock);
 748         }
 749
 750         return rc ?: count;
 751 }
 752 LUSTRE_RW_ATTR(grant_shrink);
 753
 754 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 755 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 756 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 757 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 758
 759 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 760 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 761
 762 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 763         { .name =       "connect_flags",
 764           .fops =       &osc_connect_flags_fops         },
 765         { .name =       "ost_server_uuid",
 766           .fops =       &osc_server_uuid_fops           },
 767         { .name =       "max_pages_per_rpc",
 768           .fops =       &osc_obd_max_pages_per_rpc_fops },
 769         { .name =       "osc_cached_mb",
 770           .fops =       &osc_cached_mb_fops             },
 771         { .name =       "cur_grant_bytes",
 772           .fops =       &osc_cur_grant_bytes_fops       },
 773         { .name =       "checksum_type",
 774           .fops =       &osc_checksum_type_fops         },
 775         { .name =       "timeouts",
 776           .fops =       &osc_timeouts_fops              },
 777         { .name =       "import",
 778           .fops =       &osc_import_fops                },
 779         { .name =       "state",
 780           .fops =       &osc_state_fops                 },
 781         { .name =       "pinger_recov",
 782           .fops =       &osc_pinger_recov_fops          },
 783         { .name =       "unstable_stats",
 784           .fops =       &osc_unstable_stats_fops        },
 785         { NULL }
 786 };
 787
 788 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 789 {
 790         struct timespec64 now;
 791         struct obd_device *obd = seq->private;
 792         struct client_obd *cli = &obd->u.cli;
 793         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 794         int i;
 795
 796         ktime_get_real_ts64(&now);
 797
 798         spin_lock(&cli->cl_loi_list_lock);
 799
 800         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 801                    (s64)now.tv_sec, now.tv_nsec);
 802         seq_printf(seq, "read RPCs in flight:  %d\n",
 803                    cli->cl_r_in_flight);
 804         seq_printf(seq, "write RPCs in flight: %d\n",
 805                    cli->cl_w_in_flight);
 806         seq_printf(seq, "pending write pages:  %d\n",
 807                    atomic_read(&cli->cl_pending_w_pages));
 808         seq_printf(seq, "pending read pages:   %d\n",
 809                    atomic_read(&cli->cl_pending_r_pages));
 810
 811         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 812         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 813         seq_printf(seq, "       rpcs   %% cum %%\n");
 814
 815         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 816         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 817
 818         read_cum = 0;
 819         write_cum = 0;
 820         for (i = 0; i < OBD_HIST_MAX; i++) {
 821                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 822                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 823
 824                 read_cum += r;
 825                 write_cum += w;
 826                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 827                            1 << i, r, pct(r, read_tot),
 828                            pct(read_cum, read_tot), w,
 829                            pct(w, write_tot),
 830                            pct(write_cum, write_tot));
 831                 if (read_cum == read_tot && write_cum == write_tot)
 832                         break;
 833         }
 834
 835         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 836         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 837         seq_printf(seq, "       rpcs   %% cum %%\n");
 838
 839         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 840         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 841
 842         read_cum = 0;
 843         write_cum = 0;
 844         for (i = 0; i < OBD_HIST_MAX; i++) {
 845                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 846                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 847                 read_cum += r;
 848                 write_cum += w;
 849                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 850                            i, r, pct(r, read_tot),
 851                            pct(read_cum, read_tot), w,
 852                            pct(w, write_tot),
 853                            pct(write_cum, write_tot));
 854                 if (read_cum == read_tot && write_cum == write_tot)
 855                         break;
 856         }
 857
 858         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 859         seq_printf(seq, "offset                rpcs   %% cum %% |");
 860         seq_printf(seq, "       rpcs   %% cum %%\n");
 861
 862         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 863         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 864
 865         read_cum = 0;
 866         write_cum = 0;
 867         for (i = 0; i < OBD_HIST_MAX; i++) {
 868                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 869                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 870                 read_cum += r;
 871                 write_cum += w;
 872                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 873                            (i == 0) ? 0 : 1 << (i - 1),
 874                            r, pct(r, read_tot), pct(read_cum, read_tot),
 875                            w, pct(w, write_tot), pct(write_cum, write_tot));
 876                 if (read_cum == read_tot && write_cum == write_tot)
 877                         break;
 878         }
 879
 880         spin_unlock(&cli->cl_loi_list_lock);
 881
 882         return 0;
 883 }
 884
 885 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 886                                        const char __user *buf,
 887                                        size_t len, loff_t *off)
 888 {
 889         struct seq_file *seq = file->private_data;
 890         struct obd_device *obd = seq->private;
 891         struct client_obd *cli = &obd->u.cli;
 892
 893         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 894         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 895         lprocfs_oh_clear(&cli->cl_read_page_hist);
 896         lprocfs_oh_clear(&cli->cl_write_page_hist);
 897         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 898         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 899
 900         return len;
 901 }
 902 LPROC_SEQ_FOPS(osc_rpc_stats);
 903
 904 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 905 {
 906         struct timespec64 now;
 907         struct obd_device *obd = seq->private;
 908         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 909
 910         ktime_get_real_ts64(&now);
 911
 912         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 913                    (s64)now.tv_sec, now.tv_nsec);
 914         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 915                    stats->os_lockless_writes);
 916         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 917                    stats->os_lockless_reads);
 918         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 919                    stats->os_lockless_truncates);
 920         return 0;
 921 }
 922
 923 static ssize_t osc_stats_seq_write(struct file *file,
 924                                    const char __user *buf,
 925                                    size_t len, loff_t *off)
 926 {
 927         struct seq_file *seq = file->private_data;
 928         struct obd_device *obd = seq->private;
 929         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 930
 931         memset(stats, 0, sizeof(*stats));
 932         return len;
 933 }
 934
 935 LPROC_SEQ_FOPS(osc_stats);
 936
 937 int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 938 {
 939         int rc;
 940
 941         rc = lprocfs_seq_create(obd->obd_proc_entry, "osc_stats", 0644,
 942                                 &osc_stats_fops, obd);
 943         if (rc == 0)
 944                 rc = lprocfs_obd_seq_create(obd, "rpc_stats", 0644,
 945                                             &osc_rpc_stats_fops, obd);
 946
 947         return rc;
 948 }
 949 #endif /* CONFIG_PROC_FS */
 950
 951 static struct attribute *osc_attrs[] = {
 952         &lustre_attr_active.attr,
 953         &lustre_attr_checksums.attr,
 954         &lustre_attr_checksum_dump.attr,
 955         &lustre_attr_contention_seconds.attr,
 956         &lustre_attr_cur_dirty_bytes.attr,
 957         &lustre_attr_cur_lost_grant_bytes.attr,
 958         &lustre_attr_cur_dirty_grant_bytes.attr,
 959         &lustre_attr_destroys_in_flight.attr,
 960         &lustre_attr_grant_shrink_interval.attr,
 961         &lustre_attr_lockless_truncate.attr,
 962         &lustre_attr_max_dirty_mb.attr,
 963         &lustre_attr_max_rpcs_in_flight.attr,
 964         &lustre_attr_short_io_bytes.attr,
 965         &lustre_attr_resend_count.attr,
 966         &lustre_attr_ost_conn_uuid.attr,
 967         &lustre_attr_conn_uuid.attr,
 968         &lustre_attr_ping.attr,
 969         &lustre_attr_idle_timeout.attr,
 970         &lustre_attr_idle_connect.attr,
 971         &lustre_attr_grant_shrink.attr,
 972         NULL,
 973 };
 974
 975 int osc_tunables_init(struct obd_device *obd)
 976 {
 977         int rc;
 978
 979         obd->obd_vars = lprocfs_osc_obd_vars;
 980         obd->obd_ktype.default_attrs = osc_attrs;
 981         rc = lprocfs_obd_setup(obd, false);
 982         if (rc)
 983                 return rc;
 984 #ifdef CONFIG_PROC_FS
 985         /* If the basic OSC proc tree construction succeeded then
 986          * lets do the rest.
 987          */
 988         rc = lprocfs_osc_attach_seqstat(obd);
 989         if (rc)
 990                 goto obd_cleanup;
 991
 992 #endif /* CONFIG_PROC_FS */
 993         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 994         if (rc)
 995                 goto obd_cleanup;
 996
 997         ptlrpc_lprocfs_register_obd(obd);
 998 obd_cleanup:
 999         if (rc)
1000                 lprocfs_obd_cleanup(obd);
1001         return rc;
1002 }