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