lustre/osc/lproc_osc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  */
  32 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <linux/version.h>
  35 #include <asm/statfs.h>
  36 #include <obd_cksum.h>
  37 #include <obd_class.h>
  38 #include <lprocfs_status.h>
  39 #include <linux/seq_file.h>
  40 #include <lustre_osc.h>
  41
  42 #include "osc_internal.h"
  43
  44 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  45                            char *buf)
  46 {
  47         struct obd_device *dev = container_of(kobj, struct obd_device,
  48                                               obd_kset.kobj);
  49         int rc;
  50
  51         LPROCFS_CLIMP_CHECK(dev);
  52         rc = sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return rc;
  55 }
  56
  57 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  58                             const char *buffer, size_t count)
  59 {
  60         struct obd_device *dev = container_of(kobj, struct obd_device,
  61                                               obd_kset.kobj);
  62         bool val;
  63         int rc;
  64
  65         rc = kstrtobool(buffer, &val);
  66         if (rc)
  67                 return rc;
  68
  69         /* opposite senses */
  70         if (dev->u.cli.cl_import->imp_deactive == val)
  71                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  72         else
  73                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  74                        (unsigned int)val);
  75
  76         return count;
  77 }
  78 LUSTRE_RW_ATTR(active);
  79
  80 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  81                                        struct attribute *attr,
  82                                        char *buf)
  83 {
  84         struct obd_device *dev = container_of(kobj, struct obd_device,
  85                                               obd_kset.kobj);
  86         struct client_obd *cli = &dev->u.cli;
  87         ssize_t len;
  88
  89         spin_lock(&cli->cl_loi_list_lock);
  90         len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
  91         spin_unlock(&cli->cl_loi_list_lock);
  92         return len;
  93 }
  94
  95 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  96                                         struct attribute *attr,
  97                                         const char *buffer,
  98                                         size_t count)
  99 {
 100         struct obd_device *dev = container_of(kobj, struct obd_device,
 101                                               obd_kset.kobj);
 102         struct client_obd *cli = &dev->u.cli;
 103         int adding, added, req_count;
 104         unsigned int val;
 105         int rc;
 106
 107         rc = kstrtouint(buffer, 0, &val);
 108         if (rc)
 109                 return rc;
 110
 111         if (val == 0 || val > OSC_MAX_RIF_MAX)
 112                 return -ERANGE;
 113
 114         LPROCFS_CLIMP_CHECK(dev);
 115
 116         adding = (int)val - cli->cl_max_rpcs_in_flight;
 117         req_count = atomic_read(&osc_pool_req_count);
 118         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 119                 /*
 120                  * There might be some race which will cause over-limit
 121                  * allocation, but it is fine.
 122                  */
 123                 if (req_count + adding > osc_reqpool_maxreqcount)
 124                         adding = osc_reqpool_maxreqcount - req_count;
 125
 126                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 127                 atomic_add(added, &osc_pool_req_count);
 128         }
 129
 130         spin_lock(&cli->cl_loi_list_lock);
 131         cli->cl_max_rpcs_in_flight = val;
 132         client_adjust_max_dirty(cli);
 133         spin_unlock(&cli->cl_loi_list_lock);
 134
 135         LPROCFS_CLIMP_EXIT(dev);
 136         return count;
 137 }
 138 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 139
 140 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 141                                  struct attribute *attr,
 142                                  char *buf)
 143 {
 144         struct obd_device *dev = container_of(kobj, struct obd_device,
 145                                               obd_kset.kobj);
 146         struct client_obd *cli = &dev->u.cli;
 147         unsigned long val;
 148
 149         spin_lock(&cli->cl_loi_list_lock);
 150         val = PAGES_TO_MiB(cli->cl_dirty_max_pages);
 151         spin_unlock(&cli->cl_loi_list_lock);
 152
 153         return sprintf(buf, "%lu\n", val);
 154 }
 155
 156 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 157                                   struct attribute *attr,
 158                                   const char *buffer,
 159                                   size_t count)
 160 {
 161         struct obd_device *dev = container_of(kobj, struct obd_device,
 162                                               obd_kset.kobj);
 163         struct client_obd *cli = &dev->u.cli;
 164         unsigned long pages_number, max_dirty_mb;
 165         int rc;
 166
 167         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 168         if (rc)
 169                 return rc;
 170
 171         pages_number = MiB_TO_PAGES(max_dirty_mb);
 172
 173         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 174             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 175                 return -ERANGE;
 176
 177         spin_lock(&cli->cl_loi_list_lock);
 178         cli->cl_dirty_max_pages = pages_number;
 179         osc_wake_cache_waiters(cli);
 180         spin_unlock(&cli->cl_loi_list_lock);
 181
 182         return count;
 183 }
 184 LUSTRE_RW_ATTR(max_dirty_mb);
 185
 186 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 187 LUSTRE_RO_ATTR(conn_uuid);
 188
 189 LUSTRE_RW_ATTR(ping);
 190
 191 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 192 {
 193         struct obd_device *dev = m->private;
 194         struct client_obd *cli = &dev->u.cli;
 195         int shift = 20 - PAGE_SHIFT;
 196
 197         seq_printf(m, "used_mb: %ld\n"
 198                    "busy_cnt: %ld\n"
 199                    "reclaim: %llu\n",
 200                    (atomic_long_read(&cli->cl_lru_in_list) +
 201                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 202                     atomic_long_read(&cli->cl_lru_busy),
 203                    cli->cl_lru_reclaim);
 204
 205         return 0;
 206 }
 207
 208 /* shrink the number of caching pages to a specific number */
 209 static ssize_t osc_cached_mb_seq_write(struct file *file,
 210                                        const char __user *buffer,
 211                                        size_t count, loff_t *off)
 212 {
 213         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 214         struct client_obd *cli = &dev->u.cli;
 215         __s64 pages_number;
 216         long rc;
 217         char kernbuf[128];
 218
 219         if (count >= sizeof(kernbuf))
 220                 return -EINVAL;
 221
 222         if (copy_from_user(kernbuf, buffer, count))
 223                 return -EFAULT;
 224         kernbuf[count] = 0;
 225
 226         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 227                   kernbuf;
 228         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 229         if (rc)
 230                 return rc;
 231
 232         pages_number >>= PAGE_SHIFT;
 233
 234         if (pages_number < 0)
 235                 return -ERANGE;
 236
 237         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 238         if (rc > 0) {
 239                 struct lu_env *env;
 240                 __u16 refcheck;
 241
 242                 env = cl_env_get(&refcheck);
 243                 if (!IS_ERR(env)) {
 244                         (void)osc_lru_shrink(env, cli, rc, true);
 245                         cl_env_put(env, &refcheck);
 246                 }
 247         }
 248
 249         return count;
 250 }
 251
 252 LPROC_SEQ_FOPS(osc_cached_mb);
 253
 254 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 255                                     struct attribute *attr,
 256                                     char *buf)
 257 {
 258         struct obd_device *dev = container_of(kobj, struct obd_device,
 259                                               obd_kset.kobj);
 260         struct client_obd *cli = &dev->u.cli;
 261         ssize_t len;
 262
 263         spin_lock(&cli->cl_loi_list_lock);
 264         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 265         spin_unlock(&cli->cl_loi_list_lock);
 266
 267         return len;
 268 }
 269 LUSTRE_RO_ATTR(cur_dirty_bytes);
 270
 271 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 272 {
 273         struct obd_device *dev = m->private;
 274         struct client_obd *cli = &dev->u.cli;
 275
 276         spin_lock(&cli->cl_loi_list_lock);
 277         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 278         spin_unlock(&cli->cl_loi_list_lock);
 279         return 0;
 280 }
 281
 282 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 283                                              const char __user *buffer,
 284                                              size_t count, loff_t *off)
 285 {
 286         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 287         struct client_obd *cli = &obd->u.cli;
 288         s64 val;
 289         int rc;
 290
 291         if (obd == NULL)
 292                 return 0;
 293
 294         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 295         if (rc)
 296                 return rc;
 297         if (val < 0)
 298                 return val;
 299
 300         /* this is only for shrinking grant */
 301         spin_lock(&cli->cl_loi_list_lock);
 302         if (val >= cli->cl_avail_grant) {
 303                 spin_unlock(&cli->cl_loi_list_lock);
 304                 return 0;
 305         }
 306
 307         spin_unlock(&cli->cl_loi_list_lock);
 308
 309         LPROCFS_CLIMP_CHECK(obd);
 310         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 311                 rc = osc_shrink_grant_to_target(cli, val);
 312         LPROCFS_CLIMP_EXIT(obd);
 313
 314         return rc ? rc : count;
 315 }
 316 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 317
 318 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 319                                          struct attribute *attr,
 320                                          char *buf)
 321 {
 322         struct obd_device *dev = container_of(kobj, struct obd_device,
 323                                               obd_kset.kobj);
 324         struct client_obd *cli = &dev->u.cli;
 325         ssize_t len;
 326
 327         spin_lock(&cli->cl_loi_list_lock);
 328         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 329         spin_unlock(&cli->cl_loi_list_lock);
 330         return len;
 331 }
 332 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 333
 334 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 335                                           struct attribute *attr,
 336                                           char *buf)
 337 {
 338         struct obd_device *obd = container_of(kobj, struct obd_device,
 339                                               obd_kset.kobj);
 340
 341         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 342 }
 343
 344 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 345                                            struct attribute *attr,
 346                                            const char *buffer,
 347                                            size_t count)
 348 {
 349         struct obd_device *obd = container_of(kobj, struct obd_device,
 350                                               obd_kset.kobj);
 351         unsigned int val;
 352         int rc;
 353
 354         rc = kstrtouint(buffer, 0, &val);
 355         if (rc)
 356                 return rc;
 357
 358         if (val == 0)
 359                 return -ERANGE;
 360
 361         obd->u.cli.cl_grant_shrink_interval = val;
 362         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
 429         if (obd == NULL)
 430                 return 0;
 431
 432         if (count > sizeof(kernbuf) - 1)
 433                 return -EINVAL;
 434         if (copy_from_user(kernbuf, buffer, count))
 435                 return -EFAULT;
 436         if (count > 0 && kernbuf[count - 1] == '\n')
 437                 kernbuf[count - 1] = '\0';
 438         else
 439                 kernbuf[count] = '\0';
 440
 441         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 442                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 443                         continue;
 444                 if (!strcmp(kernbuf, cksum_name[i])) {
 445                        obd->u.cli.cl_cksum_type = 1 << i;
 446                        return count;
 447                 }
 448         }
 449         return -EINVAL;
 450 }
 451 LPROC_SEQ_FOPS(osc_checksum_type);
 452
 453 static ssize_t resend_count_show(struct kobject *kobj,
 454                                  struct attribute *attr,
 455                                  char *buf)
 456 {
 457         struct obd_device *obd = container_of(kobj, struct obd_device,
 458                                               obd_kset.kobj);
 459
 460         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 461 }
 462
 463 static ssize_t resend_count_store(struct kobject *kobj,
 464                                   struct attribute *attr,
 465                                   const char *buffer,
 466                                   size_t count)
 467 {
 468         struct obd_device *obd = container_of(kobj, struct obd_device,
 469                                               obd_kset.kobj);
 470         unsigned int val;
 471         int rc;
 472
 473         rc = kstrtouint(buffer, 10, &val);
 474         if (rc)
 475                 return rc;
 476
 477         atomic_set(&obd->u.cli.cl_resends, val);
 478
 479         return count;
 480 }
 481 LUSTRE_RW_ATTR(resend_count);
 482
 483 static ssize_t checksum_dump_show(struct kobject *kobj,
 484                                   struct attribute *attr,
 485                                   char *buf)
 486 {
 487         struct obd_device *obd = container_of(kobj, struct obd_device,
 488                                               obd_kset.kobj);
 489
 490         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 491 }
 492
 493 static ssize_t checksum_dump_store(struct kobject *kobj,
 494                                    struct attribute *attr,
 495                                    const char *buffer,
 496                                    size_t count)
 497 {
 498         struct obd_device *obd = container_of(kobj, struct obd_device,
 499                                               obd_kset.kobj);
 500         bool val;
 501         int rc;
 502
 503         rc = kstrtobool(buffer, &val);
 504         if (rc)
 505                 return rc;
 506
 507         obd->u.cli.cl_checksum_dump = val;
 508
 509         return count;
 510 }
 511 LUSTRE_RW_ATTR(checksum_dump);
 512
 513 static ssize_t contention_seconds_show(struct kobject *kobj,
 514                                        struct attribute *attr,
 515                                        char *buf)
 516 {
 517         struct obd_device *obd = container_of(kobj, struct obd_device,
 518                                               obd_kset.kobj);
 519         struct osc_device *od = obd2osc_dev(obd);
 520
 521         return sprintf(buf, "%lld\n", od->od_contention_time);
 522 }
 523
 524 static ssize_t contention_seconds_store(struct kobject *kobj,
 525                                         struct attribute *attr,
 526                                         const char *buffer,
 527                                         size_t count)
 528 {
 529         struct obd_device *obd = container_of(kobj, struct obd_device,
 530                                               obd_kset.kobj);
 531         struct osc_device *od = obd2osc_dev(obd);
 532         unsigned int val;
 533         int rc;
 534
 535         rc = kstrtouint(buffer, 0, &val);
 536         if (rc)
 537                 return rc;
 538
 539         od->od_contention_time = val;
 540
 541         return count;
 542 }
 543 LUSTRE_RW_ATTR(contention_seconds);
 544
 545 static ssize_t lockless_truncate_show(struct kobject *kobj,
 546                                       struct attribute *attr,
 547                                       char *buf)
 548 {
 549         struct obd_device *obd = container_of(kobj, struct obd_device,
 550                                               obd_kset.kobj);
 551         struct osc_device *od = obd2osc_dev(obd);
 552
 553         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 554 }
 555
 556 static ssize_t lockless_truncate_store(struct kobject *kobj,
 557                                        struct attribute *attr,
 558                                        const char *buffer,
 559                                        size_t count)
 560 {
 561         struct obd_device *obd = container_of(kobj, struct obd_device,
 562                                               obd_kset.kobj);
 563         struct osc_device *od = obd2osc_dev(obd);
 564         bool val;
 565         int rc;
 566
 567         rc = kstrtobool(buffer, &val);
 568         if (rc)
 569                 return rc;
 570
 571         od->od_lockless_truncate = val;
 572
 573         return count;
 574 }
 575 LUSTRE_RW_ATTR(lockless_truncate);
 576
 577 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 578                                        struct attribute *attr,
 579                                        char *buf)
 580 {
 581         struct obd_device *obd = container_of(kobj, struct obd_device,
 582                                               obd_kset.kobj);
 583
 584         return sprintf(buf, "%u\n",
 585                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 586 }
 587 LUSTRE_RO_ATTR(destroys_in_flight);
 588
 589 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 590
 591 LUSTRE_RW_ATTR(short_io_bytes);
 592
 593 #ifdef CONFIG_PROC_FS
 594 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 595 {
 596         struct obd_device *dev = m->private;
 597         struct client_obd *cli = &dev->u.cli;
 598         long pages;
 599         int mb;
 600
 601         pages = atomic_long_read(&cli->cl_unstable_count);
 602         mb    = (pages * PAGE_SIZE) >> 20;
 603
 604         seq_printf(m, "unstable_pages: %20ld\n"
 605                    "unstable_mb:              %10d\n",
 606                    pages, mb);
 607         return 0;
 608 }
 609 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 610
 611 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 612                                  char *buf)
 613 {
 614         struct obd_device *obd = container_of(kobj, struct obd_device,
 615                                               obd_kset.kobj);
 616         struct client_obd *cli = &obd->u.cli;
 617         int ret;
 618
 619         LPROCFS_CLIMP_CHECK(obd);
 620         ret = sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 621         LPROCFS_CLIMP_EXIT(obd);
 622
 623         return ret;
 624 }
 625
 626 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 627                                   const char *buffer, size_t count)
 628 {
 629         struct obd_device *dev = container_of(kobj, struct obd_device,
 630                                               obd_kset.kobj);
 631         struct client_obd *cli = &dev->u.cli;
 632         struct ptlrpc_request *req;
 633         unsigned int idle_debug = 0;
 634         unsigned int val;
 635         int rc;
 636
 637         if (strncmp(buffer, "debug", 5) == 0) {
 638                 idle_debug = D_CONSOLE;
 639         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 640                 idle_debug = D_HA;
 641         } else {
 642                 rc = kstrtouint(buffer, 10, &val);
 643                 if (rc)
 644                         return rc;
 645
 646                 if (val > CONNECTION_SWITCH_MAX)
 647                         return -ERANGE;
 648         }
 649
 650         LPROCFS_CLIMP_CHECK(dev);
 651         if (idle_debug) {
 652                 cli->cl_import->imp_idle_debug = idle_debug;
 653         } else {
 654                 if (!val) {
 655                         /* initiate the connection if it's in IDLE state */
 656                         req = ptlrpc_request_alloc(cli->cl_import,
 657                                                    &RQF_OST_STATFS);
 658                         if (req != NULL)
 659                                 ptlrpc_req_finished(req);
 660                 }
 661                 cli->cl_import->imp_idle_timeout = val;
 662         }
 663         LPROCFS_CLIMP_EXIT(dev);
 664
 665         return count;
 666 }
 667 LUSTRE_RW_ATTR(idle_timeout);
 668
 669 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 670                                   const char *buffer, size_t count)
 671 {
 672         struct obd_device *dev = container_of(kobj, struct obd_device,
 673                                               obd_kset.kobj);
 674         struct client_obd *cli = &dev->u.cli;
 675         struct ptlrpc_request *req;
 676
 677         LPROCFS_CLIMP_CHECK(dev);
 678         /* to initiate the connection if it's in IDLE state */
 679         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 680         if (req)
 681                 ptlrpc_req_finished(req);
 682         ptlrpc_pinger_force(cli->cl_import);
 683         LPROCFS_CLIMP_EXIT(dev);
 684
 685         return count;
 686 }
 687 LUSTRE_WO_ATTR(idle_connect);
 688
 689 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 690                                  char *buf)
 691 {
 692         struct obd_device *obd = container_of(kobj, struct obd_device,
 693                                               obd_kset.kobj);
 694         struct client_obd *cli = &obd->u.cli;
 695         struct obd_connect_data *ocd;
 696         ssize_t len;
 697
 698         LPROCFS_CLIMP_CHECK(obd);
 699         ocd = &cli->cl_import->imp_connect_data;
 700
 701         len = snprintf(buf, PAGE_SIZE, "%d\n",
 702                        !!OCD_HAS_FLAG(ocd, GRANT_SHRINK));
 703         LPROCFS_CLIMP_EXIT(obd);
 704
 705         return len;
 706 }
 707
 708 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 709                                   const char *buffer, size_t count)
 710 {
 711         struct obd_device *dev = container_of(kobj, struct obd_device,
 712                                               obd_kset.kobj);
 713         struct client_obd *cli = &dev->u.cli;
 714         struct obd_connect_data *ocd;
 715         bool val;
 716         int rc;
 717
 718         if (dev == NULL)
 719                 return 0;
 720
 721         rc = kstrtobool(buffer, &val);
 722         if (rc)
 723                 return rc;
 724
 725         LPROCFS_CLIMP_CHECK(dev);
 726         ocd = &cli->cl_import->imp_connect_data;
 727
 728         if (!val) {
 729                 if (OCD_HAS_FLAG(ocd, GRANT_SHRINK))
 730                         ocd->ocd_connect_flags &= ~OBD_CONNECT_GRANT_SHRINK;
 731         } else {
 732                 /**
 733                  * server replied obd_connect_data is always bigger, so
 734                  * client's imp_connect_flags_orig are always supported
 735                  * by the server
 736                  */
 737                 if (!OCD_HAS_FLAG(ocd, GRANT_SHRINK) &&
 738                     cli->cl_import->imp_connect_flags_orig &
 739                     OBD_CONNECT_GRANT_SHRINK)
 740                         ocd->ocd_connect_flags |= OBD_CONNECT_GRANT_SHRINK;
 741         }
 742
 743         LPROCFS_CLIMP_EXIT(dev);
 744
 745         return count;
 746 }
 747 LUSTRE_RW_ATTR(grant_shrink);
 748
 749 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 750 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 751 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 752 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 753
 754 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 755 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 756
 757 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 758         { .name =       "connect_flags",
 759           .fops =       &osc_connect_flags_fops         },
 760         { .name =       "ost_server_uuid",
 761           .fops =       &osc_server_uuid_fops           },
 762         { .name =       "max_pages_per_rpc",
 763           .fops =       &osc_obd_max_pages_per_rpc_fops },
 764         { .name =       "osc_cached_mb",
 765           .fops =       &osc_cached_mb_fops             },
 766         { .name =       "cur_grant_bytes",
 767           .fops =       &osc_cur_grant_bytes_fops       },
 768         { .name =       "checksum_type",
 769           .fops =       &osc_checksum_type_fops         },
 770         { .name =       "timeouts",
 771           .fops =       &osc_timeouts_fops              },
 772         { .name =       "import",
 773           .fops =       &osc_import_fops                },
 774         { .name =       "state",
 775           .fops =       &osc_state_fops                 },
 776         { .name =       "pinger_recov",
 777           .fops =       &osc_pinger_recov_fops          },
 778         { .name =       "unstable_stats",
 779           .fops =       &osc_unstable_stats_fops        },
 780         { NULL }
 781 };
 782
 783 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 784 {
 785         struct timespec64 now;
 786         struct obd_device *dev = seq->private;
 787         struct client_obd *cli = &dev->u.cli;
 788         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 789         int i;
 790
 791         ktime_get_real_ts64(&now);
 792
 793         spin_lock(&cli->cl_loi_list_lock);
 794
 795         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 796                    (s64)now.tv_sec, now.tv_nsec);
 797         seq_printf(seq, "read RPCs in flight:  %d\n",
 798                    cli->cl_r_in_flight);
 799         seq_printf(seq, "write RPCs in flight: %d\n",
 800                    cli->cl_w_in_flight);
 801         seq_printf(seq, "pending write pages:  %d\n",
 802                    atomic_read(&cli->cl_pending_w_pages));
 803         seq_printf(seq, "pending read pages:   %d\n",
 804                    atomic_read(&cli->cl_pending_r_pages));
 805
 806         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 807         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 808         seq_printf(seq, "       rpcs   %% cum %%\n");
 809
 810         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 811         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 812
 813         read_cum = 0;
 814         write_cum = 0;
 815         for (i = 0; i < OBD_HIST_MAX; i++) {
 816                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 817                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 818
 819                 read_cum += r;
 820                 write_cum += w;
 821                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 822                            1 << i, r, pct(r, read_tot),
 823                            pct(read_cum, read_tot), w,
 824                            pct(w, write_tot),
 825                            pct(write_cum, write_tot));
 826                 if (read_cum == read_tot && write_cum == write_tot)
 827                         break;
 828         }
 829
 830         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 831         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 832         seq_printf(seq, "       rpcs   %% cum %%\n");
 833
 834         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 835         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 836
 837         read_cum = 0;
 838         write_cum = 0;
 839         for (i = 0; i < OBD_HIST_MAX; i++) {
 840                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 841                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 842                 read_cum += r;
 843                 write_cum += w;
 844                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 845                            i, r, pct(r, read_tot),
 846                            pct(read_cum, read_tot), w,
 847                            pct(w, write_tot),
 848                            pct(write_cum, write_tot));
 849                 if (read_cum == read_tot && write_cum == write_tot)
 850                         break;
 851         }
 852
 853         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 854         seq_printf(seq, "offset                rpcs   %% cum %% |");
 855         seq_printf(seq, "       rpcs   %% cum %%\n");
 856
 857         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 858         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 859
 860         read_cum = 0;
 861         write_cum = 0;
 862         for (i = 0; i < OBD_HIST_MAX; i++) {
 863                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 864                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 865                 read_cum += r;
 866                 write_cum += w;
 867                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 868                            (i == 0) ? 0 : 1 << (i - 1),
 869                            r, pct(r, read_tot), pct(read_cum, read_tot),
 870                            w, pct(w, write_tot), pct(write_cum, write_tot));
 871                 if (read_cum == read_tot && write_cum == write_tot)
 872                         break;
 873         }
 874
 875         spin_unlock(&cli->cl_loi_list_lock);
 876
 877         return 0;
 878 }
 879
 880 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 881                                        const char __user *buf,
 882                                        size_t len, loff_t *off)
 883 {
 884         struct seq_file *seq = file->private_data;
 885         struct obd_device *dev = seq->private;
 886         struct client_obd *cli = &dev->u.cli;
 887
 888         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 889         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 890         lprocfs_oh_clear(&cli->cl_read_page_hist);
 891         lprocfs_oh_clear(&cli->cl_write_page_hist);
 892         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 893         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 894
 895         return len;
 896 }
 897 LPROC_SEQ_FOPS(osc_rpc_stats);
 898
 899 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 900 {
 901         struct timespec64 now;
 902         struct obd_device *dev = seq->private;
 903         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 904
 905         ktime_get_real_ts64(&now);
 906
 907         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 908                    (s64)now.tv_sec, now.tv_nsec);
 909         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 910                    stats->os_lockless_writes);
 911         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 912                    stats->os_lockless_reads);
 913         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 914                    stats->os_lockless_truncates);
 915         return 0;
 916 }
 917
 918 static ssize_t osc_stats_seq_write(struct file *file,
 919                                    const char __user *buf,
 920                                    size_t len, loff_t *off)
 921 {
 922         struct seq_file *seq = file->private_data;
 923         struct obd_device *dev = seq->private;
 924         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 925
 926         memset(stats, 0, sizeof(*stats));
 927         return len;
 928 }
 929
 930 LPROC_SEQ_FOPS(osc_stats);
 931
 932 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 933 {
 934         int rc;
 935
 936         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 937                                 &osc_stats_fops, dev);
 938         if (rc == 0)
 939                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 940                                             &osc_rpc_stats_fops, dev);
 941
 942         return rc;
 943 }
 944 #endif /* CONFIG_PROC_FS */
 945
 946 static struct attribute *osc_attrs[] = {
 947         &lustre_attr_active.attr,
 948         &lustre_attr_checksums.attr,
 949         &lustre_attr_checksum_dump.attr,
 950         &lustre_attr_contention_seconds.attr,
 951         &lustre_attr_cur_dirty_bytes.attr,
 952         &lustre_attr_cur_lost_grant_bytes.attr,
 953         &lustre_attr_destroys_in_flight.attr,
 954         &lustre_attr_grant_shrink_interval.attr,
 955         &lustre_attr_lockless_truncate.attr,
 956         &lustre_attr_max_dirty_mb.attr,
 957         &lustre_attr_max_rpcs_in_flight.attr,
 958         &lustre_attr_short_io_bytes.attr,
 959         &lustre_attr_resend_count.attr,
 960         &lustre_attr_ost_conn_uuid.attr,
 961         &lustre_attr_conn_uuid.attr,
 962         &lustre_attr_ping.attr,
 963         &lustre_attr_idle_timeout.attr,
 964         &lustre_attr_idle_connect.attr,
 965         &lustre_attr_grant_shrink.attr,
 966         NULL,
 967 };
 968
 969 int osc_tunables_init(struct obd_device *obd)
 970 {
 971 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 972         struct obd_type *type;
 973 #endif
 974         int rc;
 975
 976         obd->obd_vars = lprocfs_osc_obd_vars;
 977 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 978         /* If this is true then both client (osc) and server (osp) are on the
 979          * same node. The osp layer if loaded first will register the osc proc
 980          * directory. In that case this obd_device will be attached its proc
 981          * tree to type->typ_procsym instead of obd->obd_type->typ_procroot.
 982          */
 983         type = class_search_type(LUSTRE_OSP_NAME);
 984         if (type && type->typ_procsym) {
 985                 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
 986                                                        type->typ_procsym,
 987                                                        obd->obd_vars, obd);
 988                 if (IS_ERR(obd->obd_proc_entry)) {
 989                         rc = PTR_ERR(obd->obd_proc_entry);
 990                         CERROR("error %d setting up lprocfs for %s\n", rc,
 991                                obd->obd_name);
 992                         obd->obd_proc_entry = NULL;
 993                 }
 994         }
 995 #endif
 996         obd->obd_ktype.default_attrs = osc_attrs;
 997         rc = lprocfs_obd_setup(obd, false);
 998         if (rc)
 999                 return rc;
1000 #ifdef CONFIG_PROC_FS
1001         /* If the basic OSC proc tree construction succeeded then
1002          * lets do the rest.
1003          */
1004         rc = lprocfs_osc_attach_seqstat(obd);
1005         if (rc)
1006                 goto obd_cleanup;
1007
1008 #endif /* CONFIG_PROC_FS */
1009         rc = sptlrpc_lprocfs_cliobd_attach(obd);
1010         if (rc)
1011                 goto obd_cleanup;
1012
1013         ptlrpc_lprocfs_register_obd(obd);
1014 obd_cleanup:
1015         if (rc)
1016                 lprocfs_obd_cleanup(obd);
1017         return rc;
1018 }