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 grant_shrink_interval_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
 344         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 345 }
 346
 347 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 348                                            struct attribute *attr,
 349                                            const char *buffer,
 350                                            size_t count)
 351 {
 352         struct obd_device *obd = container_of(kobj, struct obd_device,
 353                                               obd_kset.kobj);
 354         unsigned int val;
 355         int rc;
 356
 357         rc = kstrtouint(buffer, 0, &val);
 358         if (rc)
 359                 return rc;
 360
 361         if (val == 0)
 362                 return -ERANGE;
 363
 364         obd->u.cli.cl_grant_shrink_interval = val;
 365         osc_update_next_shrink(&obd->u.cli);
 366         osc_schedule_grant_work();
 367
 368         return count;
 369 }
 370 LUSTRE_RW_ATTR(grant_shrink_interval);
 371
 372 static ssize_t checksums_show(struct kobject *kobj,
 373                               struct attribute *attr,
 374                               char *buf)
 375 {
 376         struct obd_device *obd = container_of(kobj, struct obd_device,
 377                                               obd_kset.kobj);
 378
 379         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 380 }
 381
 382 static ssize_t checksums_store(struct kobject *kobj,
 383                                struct attribute *attr,
 384                                const char *buffer,
 385                                size_t count)
 386 {
 387         struct obd_device *obd = container_of(kobj, struct obd_device,
 388                                               obd_kset.kobj);
 389         bool val;
 390         int rc;
 391
 392         rc = kstrtobool(buffer, &val);
 393         if (rc)
 394                 return rc;
 395
 396         obd->u.cli.cl_checksum = val;
 397
 398         return count;
 399 }
 400 LUSTRE_RW_ATTR(checksums);
 401
 402 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 403 {
 404         struct obd_device *obd = m->private;
 405         int i;
 406         DECLARE_CKSUM_NAME;
 407
 408         if (obd == NULL)
 409                 return 0;
 410
 411         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 412                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 413                         continue;
 414                 if (obd->u.cli.cl_cksum_type == BIT(i))
 415                         seq_printf(m, "[%s] ", cksum_name[i]);
 416                 else
 417                         seq_printf(m, "%s ", cksum_name[i]);
 418         }
 419         seq_printf(m, "\n");
 420         return 0;
 421 }
 422
 423 static ssize_t osc_checksum_type_seq_write(struct file *file,
 424                                            const char __user *buffer,
 425                                            size_t count, loff_t *off)
 426 {
 427         struct seq_file *m = file->private_data;
 428         struct obd_device *obd = m->private;
 429         int i;
 430         DECLARE_CKSUM_NAME;
 431         char kernbuf[10];
 432         int rc = -EINVAL;
 433
 434         if (obd == NULL)
 435                 return 0;
 436
 437         if (count > sizeof(kernbuf) - 1)
 438                 return -EINVAL;
 439         if (copy_from_user(kernbuf, buffer, count))
 440                 return -EFAULT;
 441
 442         if (count > 0 && kernbuf[count - 1] == '\n')
 443                 kernbuf[count - 1] = '\0';
 444         else
 445                 kernbuf[count] = '\0';
 446
 447         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 448                 if (strcmp(kernbuf, cksum_name[i]) == 0) {
 449                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 450                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 451                                 obd->u.cli.cl_cksum_type = BIT(i);
 452                                 rc = count;
 453                         } else {
 454                                 rc = -ENOTSUPP;
 455                         }
 456                         break;
 457                 }
 458         }
 459         return rc;
 460 }
 461 LPROC_SEQ_FOPS(osc_checksum_type);
 462
 463 static ssize_t resend_count_show(struct kobject *kobj,
 464                                  struct attribute *attr,
 465                                  char *buf)
 466 {
 467         struct obd_device *obd = container_of(kobj, struct obd_device,
 468                                               obd_kset.kobj);
 469
 470         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 471 }
 472
 473 static ssize_t resend_count_store(struct kobject *kobj,
 474                                   struct attribute *attr,
 475                                   const char *buffer,
 476                                   size_t count)
 477 {
 478         struct obd_device *obd = container_of(kobj, struct obd_device,
 479                                               obd_kset.kobj);
 480         unsigned int val;
 481         int rc;
 482
 483         rc = kstrtouint(buffer, 10, &val);
 484         if (rc)
 485                 return rc;
 486
 487         atomic_set(&obd->u.cli.cl_resends, val);
 488
 489         return count;
 490 }
 491 LUSTRE_RW_ATTR(resend_count);
 492
 493 static ssize_t checksum_dump_show(struct kobject *kobj,
 494                                   struct attribute *attr,
 495                                   char *buf)
 496 {
 497         struct obd_device *obd = container_of(kobj, struct obd_device,
 498                                               obd_kset.kobj);
 499
 500         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 501 }
 502
 503 static ssize_t checksum_dump_store(struct kobject *kobj,
 504                                    struct attribute *attr,
 505                                    const char *buffer,
 506                                    size_t count)
 507 {
 508         struct obd_device *obd = container_of(kobj, struct obd_device,
 509                                               obd_kset.kobj);
 510         bool val;
 511         int rc;
 512
 513         rc = kstrtobool(buffer, &val);
 514         if (rc)
 515                 return rc;
 516
 517         obd->u.cli.cl_checksum_dump = val;
 518
 519         return count;
 520 }
 521 LUSTRE_RW_ATTR(checksum_dump);
 522
 523 static ssize_t contention_seconds_show(struct kobject *kobj,
 524                                        struct attribute *attr,
 525                                        char *buf)
 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
 531         return sprintf(buf, "%lld\n", od->od_contention_time);
 532 }
 533
 534 static ssize_t contention_seconds_store(struct kobject *kobj,
 535                                         struct attribute *attr,
 536                                         const char *buffer,
 537                                         size_t count)
 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         unsigned int val;
 543         int rc;
 544
 545         rc = kstrtouint(buffer, 0, &val);
 546         if (rc)
 547                 return rc;
 548
 549         od->od_contention_time = val;
 550
 551         return count;
 552 }
 553 LUSTRE_RW_ATTR(contention_seconds);
 554
 555 static ssize_t lockless_truncate_show(struct kobject *kobj,
 556                                       struct attribute *attr,
 557                                       char *buf)
 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
 563         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 564 }
 565
 566 static ssize_t lockless_truncate_store(struct kobject *kobj,
 567                                        struct attribute *attr,
 568                                        const char *buffer,
 569                                        size_t count)
 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         bool val;
 575         int rc;
 576
 577         rc = kstrtobool(buffer, &val);
 578         if (rc)
 579                 return rc;
 580
 581         od->od_lockless_truncate = val;
 582
 583         return count;
 584 }
 585 LUSTRE_RW_ATTR(lockless_truncate);
 586
 587 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 588                                        struct attribute *attr,
 589                                        char *buf)
 590 {
 591         struct obd_device *obd = container_of(kobj, struct obd_device,
 592                                               obd_kset.kobj);
 593
 594         return sprintf(buf, "%u\n",
 595                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 596 }
 597 LUSTRE_RO_ATTR(destroys_in_flight);
 598
 599 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 600
 601 LUSTRE_RW_ATTR(short_io_bytes);
 602
 603 #ifdef CONFIG_PROC_FS
 604 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 605 {
 606         struct obd_device *obd = m->private;
 607         struct client_obd *cli = &obd->u.cli;
 608         long pages;
 609         int mb;
 610
 611         pages = atomic_long_read(&cli->cl_unstable_count);
 612         mb    = (pages * PAGE_SIZE) >> 20;
 613
 614         seq_printf(m, "unstable_pages: %20ld\n"
 615                    "unstable_mb:              %10d\n",
 616                    pages, mb);
 617         return 0;
 618 }
 619 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 620
 621 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 622                                  char *buf)
 623 {
 624         struct obd_device *obd = container_of(kobj, struct obd_device,
 625                                               obd_kset.kobj);
 626         struct obd_import *imp;
 627         int ret;
 628
 629         with_imp_locked(obd, imp, ret)
 630                 ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
 631
 632         return ret;
 633 }
 634
 635 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 636                                   const char *buffer, size_t count)
 637 {
 638         struct obd_device *obd = container_of(kobj, struct obd_device,
 639                                               obd_kset.kobj);
 640         struct obd_import *imp;
 641         struct ptlrpc_request *req;
 642         unsigned int idle_debug = 0;
 643         unsigned int val;
 644         int rc;
 645
 646         if (strncmp(buffer, "debug", 5) == 0) {
 647                 idle_debug = D_CONSOLE;
 648         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 649                 idle_debug = D_HA;
 650         } else {
 651                 rc = kstrtouint(buffer, 10, &val);
 652                 if (rc)
 653                         return rc;
 654
 655                 if (val > CONNECTION_SWITCH_MAX)
 656                         return -ERANGE;
 657         }
 658
 659         with_imp_locked(obd, imp, rc) {
 660                 if (idle_debug) {
 661                         imp->imp_idle_debug = idle_debug;
 662                 } else {
 663                         if (!val) {
 664                                 /* initiate the connection if it's in IDLE state */
 665                                 req = ptlrpc_request_alloc(imp,
 666                                                            &RQF_OST_STATFS);
 667                                 if (req != NULL)
 668                                         ptlrpc_req_finished(req);
 669                         }
 670                         imp->imp_idle_timeout = val;
 671                 }
 672         }
 673
 674         return count;
 675 }
 676 LUSTRE_RW_ATTR(idle_timeout);
 677
 678 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 679                                   const char *buffer, size_t count)
 680 {
 681         struct obd_device *obd = container_of(kobj, struct obd_device,
 682                                               obd_kset.kobj);
 683         struct obd_import *imp;
 684         struct ptlrpc_request *req;
 685         int rc;
 686
 687         with_imp_locked(obd, imp, rc) {
 688                 /* to initiate the connection if it's in IDLE state */
 689                 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
 690                 if (req)
 691                         ptlrpc_req_finished(req);
 692                 ptlrpc_pinger_force(imp);
 693         }
 694
 695         return rc ?: count;
 696 }
 697 LUSTRE_WO_ATTR(idle_connect);
 698
 699 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 700                                  char *buf)
 701 {
 702         struct obd_device *obd = container_of(kobj, struct obd_device,
 703                                               obd_kset.kobj);
 704         struct obd_import *imp;
 705         ssize_t len;
 706
 707         with_imp_locked(obd, imp, len)
 708                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 709                                 !imp->imp_grant_shrink_disabled &&
 710                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 711                                              GRANT_SHRINK));
 712
 713         return len;
 714 }
 715
 716 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 717                                   const char *buffer, size_t count)
 718 {
 719         struct obd_device *obd = container_of(kobj, struct obd_device,
 720                                               obd_kset.kobj);
 721         struct obd_import *imp;
 722         bool val;
 723         int rc;
 724
 725         if (obd == NULL)
 726                 return 0;
 727
 728         rc = kstrtobool(buffer, &val);
 729         if (rc)
 730                 return rc;
 731
 732         with_imp_locked(obd, imp, rc) {
 733                 spin_lock(&imp->imp_lock);
 734                 imp->imp_grant_shrink_disabled = !val;
 735                 spin_unlock(&imp->imp_lock);
 736         }
 737
 738         return rc ?: count;
 739 }
 740 LUSTRE_RW_ATTR(grant_shrink);
 741
 742 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 743 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 744 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 745 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 746
 747 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 748 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 749
 750 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 751         { .name =       "connect_flags",
 752           .fops =       &osc_connect_flags_fops         },
 753         { .name =       "ost_server_uuid",
 754           .fops =       &osc_server_uuid_fops           },
 755         { .name =       "max_pages_per_rpc",
 756           .fops =       &osc_obd_max_pages_per_rpc_fops },
 757         { .name =       "osc_cached_mb",
 758           .fops =       &osc_cached_mb_fops             },
 759         { .name =       "cur_grant_bytes",
 760           .fops =       &osc_cur_grant_bytes_fops       },
 761         { .name =       "checksum_type",
 762           .fops =       &osc_checksum_type_fops         },
 763         { .name =       "timeouts",
 764           .fops =       &osc_timeouts_fops              },
 765         { .name =       "import",
 766           .fops =       &osc_import_fops                },
 767         { .name =       "state",
 768           .fops =       &osc_state_fops                 },
 769         { .name =       "pinger_recov",
 770           .fops =       &osc_pinger_recov_fops          },
 771         { .name =       "unstable_stats",
 772           .fops =       &osc_unstable_stats_fops        },
 773         { NULL }
 774 };
 775
 776 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 777 {
 778         struct timespec64 now;
 779         struct obd_device *obd = seq->private;
 780         struct client_obd *cli = &obd->u.cli;
 781         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 782         int i;
 783
 784         ktime_get_real_ts64(&now);
 785
 786         spin_lock(&cli->cl_loi_list_lock);
 787
 788         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 789                    (s64)now.tv_sec, now.tv_nsec);
 790         seq_printf(seq, "read RPCs in flight:  %d\n",
 791                    cli->cl_r_in_flight);
 792         seq_printf(seq, "write RPCs in flight: %d\n",
 793                    cli->cl_w_in_flight);
 794         seq_printf(seq, "pending write pages:  %d\n",
 795                    atomic_read(&cli->cl_pending_w_pages));
 796         seq_printf(seq, "pending read pages:   %d\n",
 797                    atomic_read(&cli->cl_pending_r_pages));
 798
 799         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 800         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 801         seq_printf(seq, "       rpcs   %% cum %%\n");
 802
 803         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 804         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 805
 806         read_cum = 0;
 807         write_cum = 0;
 808         for (i = 0; i < OBD_HIST_MAX; i++) {
 809                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 810                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 811
 812                 read_cum += r;
 813                 write_cum += w;
 814                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 815                            1 << i, r, pct(r, read_tot),
 816                            pct(read_cum, read_tot), w,
 817                            pct(w, write_tot),
 818                            pct(write_cum, write_tot));
 819                 if (read_cum == read_tot && write_cum == write_tot)
 820                         break;
 821         }
 822
 823         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 824         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 825         seq_printf(seq, "       rpcs   %% cum %%\n");
 826
 827         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 828         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 829
 830         read_cum = 0;
 831         write_cum = 0;
 832         for (i = 0; i < OBD_HIST_MAX; i++) {
 833                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 834                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 835                 read_cum += r;
 836                 write_cum += w;
 837                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 838                            i, r, pct(r, read_tot),
 839                            pct(read_cum, read_tot), w,
 840                            pct(w, write_tot),
 841                            pct(write_cum, write_tot));
 842                 if (read_cum == read_tot && write_cum == write_tot)
 843                         break;
 844         }
 845
 846         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 847         seq_printf(seq, "offset                rpcs   %% cum %% |");
 848         seq_printf(seq, "       rpcs   %% cum %%\n");
 849
 850         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 851         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 852
 853         read_cum = 0;
 854         write_cum = 0;
 855         for (i = 0; i < OBD_HIST_MAX; i++) {
 856                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 857                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 858                 read_cum += r;
 859                 write_cum += w;
 860                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 861                            (i == 0) ? 0 : 1 << (i - 1),
 862                            r, pct(r, read_tot), pct(read_cum, read_tot),
 863                            w, pct(w, write_tot), pct(write_cum, write_tot));
 864                 if (read_cum == read_tot && write_cum == write_tot)
 865                         break;
 866         }
 867
 868         spin_unlock(&cli->cl_loi_list_lock);
 869
 870         return 0;
 871 }
 872
 873 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 874                                        const char __user *buf,
 875                                        size_t len, loff_t *off)
 876 {
 877         struct seq_file *seq = file->private_data;
 878         struct obd_device *obd = seq->private;
 879         struct client_obd *cli = &obd->u.cli;
 880
 881         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 882         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 883         lprocfs_oh_clear(&cli->cl_read_page_hist);
 884         lprocfs_oh_clear(&cli->cl_write_page_hist);
 885         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 886         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 887
 888         return len;
 889 }
 890 LPROC_SEQ_FOPS(osc_rpc_stats);
 891
 892 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 893 {
 894         struct timespec64 now;
 895         struct obd_device *obd = seq->private;
 896         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 897
 898         ktime_get_real_ts64(&now);
 899
 900         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 901                    (s64)now.tv_sec, now.tv_nsec);
 902         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 903                    stats->os_lockless_writes);
 904         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 905                    stats->os_lockless_reads);
 906         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 907                    stats->os_lockless_truncates);
 908         return 0;
 909 }
 910
 911 static ssize_t osc_stats_seq_write(struct file *file,
 912                                    const char __user *buf,
 913                                    size_t len, loff_t *off)
 914 {
 915         struct seq_file *seq = file->private_data;
 916         struct obd_device *obd = seq->private;
 917         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 918
 919         memset(stats, 0, sizeof(*stats));
 920         return len;
 921 }
 922
 923 LPROC_SEQ_FOPS(osc_stats);
 924
 925 int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 926 {
 927         int rc;
 928
 929         rc = lprocfs_seq_create(obd->obd_proc_entry, "osc_stats", 0644,
 930                                 &osc_stats_fops, obd);
 931         if (rc == 0)
 932                 rc = lprocfs_obd_seq_create(obd, "rpc_stats", 0644,
 933                                             &osc_rpc_stats_fops, obd);
 934
 935         return rc;
 936 }
 937 #endif /* CONFIG_PROC_FS */
 938
 939 static struct attribute *osc_attrs[] = {
 940         &lustre_attr_active.attr,
 941         &lustre_attr_checksums.attr,
 942         &lustre_attr_checksum_dump.attr,
 943         &lustre_attr_contention_seconds.attr,
 944         &lustre_attr_cur_dirty_bytes.attr,
 945         &lustre_attr_cur_lost_grant_bytes.attr,
 946         &lustre_attr_destroys_in_flight.attr,
 947         &lustre_attr_grant_shrink_interval.attr,
 948         &lustre_attr_lockless_truncate.attr,
 949         &lustre_attr_max_dirty_mb.attr,
 950         &lustre_attr_max_rpcs_in_flight.attr,
 951         &lustre_attr_short_io_bytes.attr,
 952         &lustre_attr_resend_count.attr,
 953         &lustre_attr_ost_conn_uuid.attr,
 954         &lustre_attr_conn_uuid.attr,
 955         &lustre_attr_ping.attr,
 956         &lustre_attr_idle_timeout.attr,
 957         &lustre_attr_idle_connect.attr,
 958         &lustre_attr_grant_shrink.attr,
 959         NULL,
 960 };
 961
 962 int osc_tunables_init(struct obd_device *obd)
 963 {
 964         int rc;
 965
 966         obd->obd_vars = lprocfs_osc_obd_vars;
 967         obd->obd_ktype.default_attrs = osc_attrs;
 968         rc = lprocfs_obd_setup(obd, false);
 969         if (rc)
 970                 return rc;
 971 #ifdef CONFIG_PROC_FS
 972         /* If the basic OSC proc tree construction succeeded then
 973          * lets do the rest.
 974          */
 975         rc = lprocfs_osc_attach_seqstat(obd);
 976         if (rc)
 977                 goto obd_cleanup;
 978
 979 #endif /* CONFIG_PROC_FS */
 980         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 981         if (rc)
 982                 goto obd_cleanup;
 983
 984         ptlrpc_lprocfs_register_obd(obd);
 985 obd_cleanup:
 986         if (rc)
 987                 lprocfs_obd_cleanup(obd);
 988         return rc;
 989 }