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         struct obd_import *imp, *imp0;
  64         bool val;
  65         int rc;
  66
  67         rc = kstrtobool(buffer, &val);
  68         if (rc)
  69                 return rc;
  70
  71         with_imp_locked(obd, imp0, rc)
  72                 imp = class_import_get(imp0);
  73         if (rc)
  74                 return rc;
  75         /* opposite senses */
  76         if (imp->imp_deactive == val)
  77                 rc = ptlrpc_set_import_active(imp, val);
  78         else
  79                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  80                        (unsigned int)val);
  81         class_import_put(imp);
  82
  83         return rc ?: count;
  84 }
  85 LUSTRE_RW_ATTR(active);
  86
  87 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  88                                        struct attribute *attr,
  89                                        char *buf)
  90 {
  91         struct obd_device *obd = container_of(kobj, struct obd_device,
  92                                               obd_kset.kobj);
  93         struct client_obd *cli = &obd->u.cli;
  94
  95         return  scnprintf(buf, PAGE_SIZE, "%u\n", cli->cl_max_rpcs_in_flight);
  96 }
  97
  98 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  99                                         struct attribute *attr,
 100                                         const char *buffer,
 101                                         size_t count)
 102 {
 103         struct obd_device *obd = container_of(kobj, struct obd_device,
 104                                               obd_kset.kobj);
 105         struct client_obd *cli = &obd->u.cli;
 106         int adding, added, req_count;
 107         unsigned int val;
 108         int rc;
 109
 110         rc = kstrtouint(buffer, 0, &val);
 111         if (rc)
 112                 return rc;
 113
 114         if (val == 0 || val > OSC_MAX_RIF_MAX)
 115                 return -ERANGE;
 116
 117         adding = (int)val - cli->cl_max_rpcs_in_flight;
 118         req_count = atomic_read(&osc_pool_req_count);
 119         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 120                 /*
 121                  * There might be some race which will cause over-limit
 122                  * allocation, but it is fine.
 123                  */
 124                 if (req_count + adding > osc_reqpool_maxreqcount)
 125                         adding = osc_reqpool_maxreqcount - req_count;
 126
 127                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 128                 atomic_add(added, &osc_pool_req_count);
 129         }
 130
 131         spin_lock(&cli->cl_loi_list_lock);
 132         cli->cl_max_rpcs_in_flight = val;
 133         client_adjust_max_dirty(cli);
 134         spin_unlock(&cli->cl_loi_list_lock);
 135
 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 *obd = container_of(kobj, struct obd_device,
 145                                               obd_kset.kobj);
 146         struct client_obd *cli = &obd->u.cli;
 147
 148         return scnprintf(buf, PAGE_SIZE, "%lu\n",
 149                          PAGES_TO_MiB(cli->cl_dirty_max_pages));
 150 }
 151
 152 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 153                                   struct attribute *attr,
 154                                   const char *buffer,
 155                                   size_t count)
 156 {
 157         struct obd_device *obd = container_of(kobj, struct obd_device,
 158                                               obd_kset.kobj);
 159         struct client_obd *cli = &obd->u.cli;
 160         unsigned long pages_number, max_dirty_mb;
 161         int rc;
 162
 163         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 164         if (rc)
 165                 return rc;
 166
 167         pages_number = MiB_TO_PAGES(max_dirty_mb);
 168
 169         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 170             pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
 171                 return -ERANGE;
 172
 173         spin_lock(&cli->cl_loi_list_lock);
 174         cli->cl_dirty_max_pages = pages_number;
 175         osc_wake_cache_waiters(cli);
 176         spin_unlock(&cli->cl_loi_list_lock);
 177
 178         return count;
 179 }
 180 LUSTRE_RW_ATTR(max_dirty_mb);
 181
 182 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 183 LUSTRE_RO_ATTR(conn_uuid);
 184
 185 LUSTRE_RW_ATTR(ping);
 186
 187 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 188 {
 189         struct obd_device *obd = m->private;
 190         struct client_obd *cli = &obd->u.cli;
 191         int shift = 20 - PAGE_SHIFT;
 192
 193         seq_printf(m, "used_mb: %ld\n"
 194                    "busy_cnt: %ld\n"
 195                    "reclaim: %llu\n",
 196                    (atomic_long_read(&cli->cl_lru_in_list) +
 197                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 198                     atomic_long_read(&cli->cl_lru_busy),
 199                    cli->cl_lru_reclaim);
 200
 201         return 0;
 202 }
 203
 204 /* shrink the number of caching pages to a specific number */
 205 static ssize_t osc_cached_mb_seq_write(struct file *file,
 206                                        const char __user *buffer,
 207                                        size_t count, loff_t *off)
 208 {
 209         struct seq_file *m = file->private_data;
 210         struct obd_device *obd = m->private;
 211         struct client_obd *cli = &obd->u.cli;
 212         u64 pages_number;
 213         const char *tmp;
 214         long rc;
 215         char kernbuf[128];
 216
 217         if (count >= sizeof(kernbuf))
 218                 return -EINVAL;
 219
 220         if (copy_from_user(kernbuf, buffer, count))
 221                 return -EFAULT;
 222         kernbuf[count] = 0;
 223
 224         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 225         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 226         if (rc < 0)
 227                 return rc;
 228
 229         pages_number >>= PAGE_SHIFT;
 230
 231         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 232         if (rc > 0) {
 233                 struct lu_env *env;
 234                 __u16 refcheck;
 235
 236                 env = cl_env_get(&refcheck);
 237                 if (!IS_ERR(env)) {
 238                         (void)osc_lru_shrink(env, cli, rc, true);
 239                         cl_env_put(env, &refcheck);
 240                 }
 241         }
 242
 243         return count;
 244 }
 245
 246 LPROC_SEQ_FOPS(osc_cached_mb);
 247
 248 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 249                                     struct attribute *attr,
 250                                     char *buf)
 251 {
 252         struct obd_device *obd = container_of(kobj, struct obd_device,
 253                                               obd_kset.kobj);
 254         struct client_obd *cli = &obd->u.cli;
 255
 256         return scnprintf(buf, PAGE_SIZE, "%lu\n",
 257                          cli->cl_dirty_pages << PAGE_SHIFT);
 258 }
 259 LUSTRE_RO_ATTR(cur_dirty_bytes);
 260
 261 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 262 {
 263         struct obd_device *obd = m->private;
 264         struct client_obd *cli = &obd->u.cli;
 265
 266         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 267         return 0;
 268 }
 269
 270 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 271                                              const char __user *buffer,
 272                                              size_t count, loff_t *off)
 273 {
 274         struct seq_file *m = file->private_data;
 275         struct obd_device *obd = m->private;
 276         struct client_obd *cli = &obd->u.cli;
 277         struct obd_import *imp;
 278         char kernbuf[22] = "";
 279         u64 val;
 280         int rc;
 281
 282         if (obd == NULL)
 283                 return 0;
 284
 285         if (count >= sizeof(kernbuf))
 286                 return -EINVAL;
 287
 288         if (copy_from_user(kernbuf, buffer, count))
 289                 return -EFAULT;
 290         kernbuf[count] = 0;
 291
 292         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 293         if (rc < 0)
 294                 return rc;
 295
 296         /* this is only for shrinking grant */
 297         if (val >= cli->cl_avail_grant)
 298                 return 0;
 299
 300         with_imp_locked(obd, imp, rc)
 301                 if (imp->imp_state == LUSTRE_IMP_FULL)
 302                         rc = osc_shrink_grant_to_target(cli, val);
 303
 304         return rc ? rc : count;
 305 }
 306 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 307
 308 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 309                                          struct attribute *attr,
 310                                          char *buf)
 311 {
 312         struct obd_device *obd = container_of(kobj, struct obd_device,
 313                                               obd_kset.kobj);
 314         struct client_obd *cli = &obd->u.cli;
 315
 316         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_lost_grant);
 317 }
 318 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 319
 320 static ssize_t cur_dirty_grant_bytes_show(struct kobject *kobj,
 321                                           struct attribute *attr,
 322                                           char *buf)
 323 {
 324         struct obd_device *obd = container_of(kobj, struct obd_device,
 325                                               obd_kset.kobj);
 326         struct client_obd *cli = &obd->u.cli;
 327
 328         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_dirty_grant);
 329 }
 330 LUSTRE_RO_ATTR(cur_dirty_grant_bytes);
 331
 332 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 333                                           struct attribute *attr,
 334                                           char *buf)
 335 {
 336         struct obd_device *obd = container_of(kobj, struct obd_device,
 337                                               obd_kset.kobj);
 338
 339         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 340 }
 341
 342 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 343                                            struct attribute *attr,
 344                                            const char *buffer,
 345                                            size_t count)
 346 {
 347         struct obd_device *obd = container_of(kobj, struct obd_device,
 348                                               obd_kset.kobj);
 349         unsigned int val;
 350         int rc;
 351
 352         rc = kstrtouint(buffer, 0, &val);
 353         if (rc)
 354                 return rc;
 355
 356         if (val == 0)
 357                 return -ERANGE;
 358
 359         obd->u.cli.cl_grant_shrink_interval = val;
 360         osc_update_next_shrink(&obd->u.cli);
 361         osc_schedule_grant_work();
 362
 363         return count;
 364 }
 365 LUSTRE_RW_ATTR(grant_shrink_interval);
 366
 367 static ssize_t checksums_show(struct kobject *kobj,
 368                               struct attribute *attr,
 369                               char *buf)
 370 {
 371         struct obd_device *obd = container_of(kobj, struct obd_device,
 372                                               obd_kset.kobj);
 373
 374         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum);
 375 }
 376
 377 static ssize_t checksums_store(struct kobject *kobj,
 378                                struct attribute *attr,
 379                                const char *buffer,
 380                                size_t count)
 381 {
 382         struct obd_device *obd = container_of(kobj, struct obd_device,
 383                                               obd_kset.kobj);
 384         bool val;
 385         int rc;
 386
 387         rc = kstrtobool(buffer, &val);
 388         if (rc)
 389                 return rc;
 390
 391         obd->u.cli.cl_checksum = val;
 392
 393         return count;
 394 }
 395 LUSTRE_RW_ATTR(checksums);
 396
 397 DECLARE_CKSUM_NAME;
 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
 404         if (obd == NULL)
 405                 return 0;
 406
 407         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 408                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 409                         continue;
 410                 if (obd->u.cli.cl_cksum_type == BIT(i))
 411                         seq_printf(m, "[%s] ", cksum_name[i]);
 412                 else
 413                         seq_printf(m, "%s ", cksum_name[i]);
 414         }
 415         seq_puts(m, "\n");
 416
 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 seq_file *m = file->private_data;
 425         struct obd_device *obd = m->private;
 426         char kernbuf[10];
 427         int rc = -EINVAL;
 428         int i;
 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 scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum_dump);
 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 *obd = m->private;
 603         struct client_obd *cli = &obd->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 obd_import *imp;
 623         int ret;
 624
 625         with_imp_locked(obd, imp, ret)
 626                 ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
 627
 628         return ret;
 629 }
 630
 631 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 632                                   const char *buffer, size_t count)
 633 {
 634         struct obd_device *obd = container_of(kobj, struct obd_device,
 635                                               obd_kset.kobj);
 636         struct obd_import *imp;
 637         struct ptlrpc_request *req;
 638         unsigned int idle_debug = 0;
 639         unsigned int val;
 640         int rc;
 641
 642         if (strncmp(buffer, "debug", 5) == 0) {
 643                 idle_debug = D_CONSOLE;
 644         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 645                 idle_debug = D_HA;
 646         } else {
 647                 rc = kstrtouint(buffer, 10, &val);
 648                 if (rc)
 649                         return rc;
 650
 651                 if (val > CONNECTION_SWITCH_MAX)
 652                         return -ERANGE;
 653         }
 654
 655         with_imp_locked(obd, imp, rc) {
 656                 if (idle_debug) {
 657                         imp->imp_idle_debug = idle_debug;
 658                 } else {
 659                         if (!val) {
 660                                 /* initiate the connection if it's in IDLE state */
 661                                 req = ptlrpc_request_alloc(imp,
 662                                                            &RQF_OST_STATFS);
 663                                 if (req != NULL)
 664                                         ptlrpc_req_finished(req);
 665                         }
 666                         imp->imp_idle_timeout = val;
 667                 }
 668         }
 669
 670         return count;
 671 }
 672 LUSTRE_RW_ATTR(idle_timeout);
 673
 674 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 675                                   const char *buffer, size_t count)
 676 {
 677         struct obd_device *obd = container_of(kobj, struct obd_device,
 678                                               obd_kset.kobj);
 679         struct obd_import *imp;
 680         struct ptlrpc_request *req;
 681         int rc;
 682
 683         with_imp_locked(obd, imp, rc) {
 684                 /* to initiate the connection if it's in IDLE state */
 685                 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
 686                 if (req)
 687                         ptlrpc_req_finished(req);
 688                 ptlrpc_pinger_force(imp);
 689         }
 690
 691         return rc ?: 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 obd_import *imp;
 701         ssize_t len;
 702
 703         with_imp_locked(obd, imp, len)
 704                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 705                                 !imp->imp_grant_shrink_disabled &&
 706                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 707                                              GRANT_SHRINK));
 708
 709         return len;
 710 }
 711
 712 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 713                                   const char *buffer, size_t count)
 714 {
 715         struct obd_device *obd = container_of(kobj, struct obd_device,
 716                                               obd_kset.kobj);
 717         struct obd_import *imp;
 718         bool val;
 719         int rc;
 720
 721         if (obd == NULL)
 722                 return 0;
 723
 724         rc = kstrtobool(buffer, &val);
 725         if (rc)
 726                 return rc;
 727
 728         with_imp_locked(obd, imp, rc) {
 729                 spin_lock(&imp->imp_lock);
 730                 imp->imp_grant_shrink_disabled = !val;
 731                 spin_unlock(&imp->imp_lock);
 732         }
 733
 734         return rc ?: count;
 735 }
 736 LUSTRE_RW_ATTR(grant_shrink);
 737
 738 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 739 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 740 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 741 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 742
 743 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 744 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 745
 746 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 747         { .name =       "connect_flags",
 748           .fops =       &osc_connect_flags_fops         },
 749         { .name =       "ost_server_uuid",
 750           .fops =       &osc_server_uuid_fops           },
 751         { .name =       "max_pages_per_rpc",
 752           .fops =       &osc_obd_max_pages_per_rpc_fops },
 753         { .name =       "osc_cached_mb",
 754           .fops =       &osc_cached_mb_fops             },
 755         { .name =       "cur_grant_bytes",
 756           .fops =       &osc_cur_grant_bytes_fops       },
 757         { .name =       "checksum_type",
 758           .fops =       &osc_checksum_type_fops         },
 759         { .name =       "timeouts",
 760           .fops =       &osc_timeouts_fops              },
 761         { .name =       "import",
 762           .fops =       &osc_import_fops                },
 763         { .name =       "state",
 764           .fops =       &osc_state_fops                 },
 765         { .name =       "pinger_recov",
 766           .fops =       &osc_pinger_recov_fops          },
 767         { .name =       "unstable_stats",
 768           .fops =       &osc_unstable_stats_fops        },
 769         { NULL }
 770 };
 771
 772 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 773 {
 774         struct timespec64 now;
 775         struct obd_device *obd = seq->private;
 776         struct client_obd *cli = &obd->u.cli;
 777         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 778         int i;
 779
 780         ktime_get_real_ts64(&now);
 781
 782         spin_lock(&cli->cl_loi_list_lock);
 783
 784         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 785                    (s64)now.tv_sec, now.tv_nsec);
 786         seq_printf(seq, "read RPCs in flight:  %d\n",
 787                    cli->cl_r_in_flight);
 788         seq_printf(seq, "write RPCs in flight: %d\n",
 789                    cli->cl_w_in_flight);
 790         seq_printf(seq, "pending write pages:  %d\n",
 791                    atomic_read(&cli->cl_pending_w_pages));
 792         seq_printf(seq, "pending read pages:   %d\n",
 793                    atomic_read(&cli->cl_pending_r_pages));
 794
 795         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 796         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 797         seq_printf(seq, "       rpcs   %% cum %%\n");
 798
 799         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 800         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 801
 802         read_cum = 0;
 803         write_cum = 0;
 804         for (i = 0; i < OBD_HIST_MAX; i++) {
 805                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 806                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 807
 808                 read_cum += r;
 809                 write_cum += w;
 810                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 811                            1 << i, r, pct(r, read_tot),
 812                            pct(read_cum, read_tot), w,
 813                            pct(w, write_tot),
 814                            pct(write_cum, write_tot));
 815                 if (read_cum == read_tot && write_cum == write_tot)
 816                         break;
 817         }
 818
 819         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 820         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 821         seq_printf(seq, "       rpcs   %% cum %%\n");
 822
 823         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 824         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 825
 826         read_cum = 0;
 827         write_cum = 0;
 828         for (i = 1; i < OBD_HIST_MAX; i++) {
 829                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 830                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 831                 read_cum += r;
 832                 write_cum += w;
 833                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 834                            i, r, pct(r, read_tot),
 835                            pct(read_cum, read_tot), w,
 836                            pct(w, write_tot),
 837                            pct(write_cum, write_tot));
 838                 if (read_cum == read_tot && write_cum == write_tot)
 839                         break;
 840         }
 841
 842         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 843         seq_printf(seq, "offset                rpcs   %% cum %% |");
 844         seq_printf(seq, "       rpcs   %% cum %%\n");
 845
 846         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 847         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 848
 849         read_cum = 0;
 850         write_cum = 0;
 851         for (i = 0; i < OBD_HIST_MAX; i++) {
 852                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 853                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 854                 read_cum += r;
 855                 write_cum += w;
 856                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 857                            (i == 0) ? 0 : 1 << (i - 1),
 858                            r, pct(r, read_tot), pct(read_cum, read_tot),
 859                            w, pct(w, write_tot), pct(write_cum, write_tot));
 860                 if (read_cum == read_tot && write_cum == write_tot)
 861                         break;
 862         }
 863
 864         spin_unlock(&cli->cl_loi_list_lock);
 865
 866         return 0;
 867 }
 868
 869 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 870                                        const char __user *buf,
 871                                        size_t len, loff_t *off)
 872 {
 873         struct seq_file *seq = file->private_data;
 874         struct obd_device *obd = seq->private;
 875         struct client_obd *cli = &obd->u.cli;
 876
 877         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 878         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 879         lprocfs_oh_clear(&cli->cl_read_page_hist);
 880         lprocfs_oh_clear(&cli->cl_write_page_hist);
 881         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 882         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 883
 884         return len;
 885 }
 886 LPROC_SEQ_FOPS(osc_rpc_stats);
 887
 888 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 889 {
 890         struct timespec64 now;
 891         struct obd_device *obd = seq->private;
 892         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 893
 894         ktime_get_real_ts64(&now);
 895
 896         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 897                    (s64)now.tv_sec, now.tv_nsec);
 898         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 899                    stats->os_lockless_writes);
 900         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 901                    stats->os_lockless_reads);
 902         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 903                    stats->os_lockless_truncates);
 904         return 0;
 905 }
 906
 907 static ssize_t osc_stats_seq_write(struct file *file,
 908                                    const char __user *buf,
 909                                    size_t len, loff_t *off)
 910 {
 911         struct seq_file *seq = file->private_data;
 912         struct obd_device *obd = seq->private;
 913         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 914
 915         memset(stats, 0, sizeof(*stats));
 916         return len;
 917 }
 918
 919 LPROC_SEQ_FOPS(osc_stats);
 920
 921 int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 922 {
 923         int rc;
 924
 925         rc = lprocfs_seq_create(obd->obd_proc_entry, "osc_stats", 0644,
 926                                 &osc_stats_fops, obd);
 927         if (rc == 0)
 928                 rc = lprocfs_obd_seq_create(obd, "rpc_stats", 0644,
 929                                             &osc_rpc_stats_fops, obd);
 930
 931         return rc;
 932 }
 933 #endif /* CONFIG_PROC_FS */
 934
 935 static struct attribute *osc_attrs[] = {
 936         &lustre_attr_active.attr,
 937         &lustre_attr_checksums.attr,
 938         &lustre_attr_checksum_dump.attr,
 939         &lustre_attr_contention_seconds.attr,
 940         &lustre_attr_cur_dirty_bytes.attr,
 941         &lustre_attr_cur_lost_grant_bytes.attr,
 942         &lustre_attr_cur_dirty_grant_bytes.attr,
 943         &lustre_attr_destroys_in_flight.attr,
 944         &lustre_attr_grant_shrink_interval.attr,
 945         &lustre_attr_lockless_truncate.attr,
 946         &lustre_attr_max_dirty_mb.attr,
 947         &lustre_attr_max_rpcs_in_flight.attr,
 948         &lustre_attr_short_io_bytes.attr,
 949         &lustre_attr_resend_count.attr,
 950         &lustre_attr_ost_conn_uuid.attr,
 951         &lustre_attr_conn_uuid.attr,
 952         &lustre_attr_ping.attr,
 953         &lustre_attr_idle_timeout.attr,
 954         &lustre_attr_idle_connect.attr,
 955         &lustre_attr_grant_shrink.attr,
 956         NULL,
 957 };
 958
 959 int osc_tunables_init(struct obd_device *obd)
 960 {
 961         int rc;
 962
 963         obd->obd_vars = lprocfs_osc_obd_vars;
 964         obd->obd_ktype.default_attrs = osc_attrs;
 965         rc = lprocfs_obd_setup(obd, false);
 966         if (rc)
 967                 return rc;
 968 #ifdef CONFIG_PROC_FS
 969         /* If the basic OSC proc tree construction succeeded then
 970          * lets do the rest.
 971          */
 972         rc = lprocfs_osc_attach_seqstat(obd);
 973         if (rc)
 974                 goto obd_cleanup;
 975
 976 #endif /* CONFIG_PROC_FS */
 977         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 978         if (rc)
 979                 goto obd_cleanup;
 980
 981         ptlrpc_lprocfs_register_obd(obd);
 982 obd_cleanup:
 983         if (rc)
 984                 lprocfs_obd_cleanup(obd);
 985         return rc;
 986 }