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  */
  31 #define DEBUG_SUBSYSTEM S_CLASS
  32
  33 #include <linux/version.h>
  34 #include <asm/statfs.h>
  35 #include <obd_cksum.h>
  36 #include <obd_class.h>
  37 #include <lprocfs_status.h>
  38 #include <linux/seq_file.h>
  39 #include <lustre_osc.h>
  40
  41 #include "osc_internal.h"
  42
  43 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  44                            char *buf)
  45 {
  46         struct obd_device *obd = container_of(kobj, struct obd_device,
  47                                               obd_kset.kobj);
  48         struct obd_import *imp;
  49         int rc;
  50
  51         with_imp_locked(obd, imp, rc)
  52                 rc = sprintf(buf, "%d\n", !imp->imp_deactive);
  53
  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 *obd = container_of(kobj, struct obd_device,
  61                                               obd_kset.kobj);
  62         struct obd_import *imp, *imp0;
  63         bool val;
  64         int rc;
  65
  66         rc = kstrtobool(buffer, &val);
  67         if (rc)
  68                 return rc;
  69
  70         with_imp_locked(obd, imp0, rc)
  71                 imp = class_import_get(imp0);
  72         if (rc)
  73                 return rc;
  74         /* opposite senses */
  75         if (imp->imp_deactive == val)
  76                 rc = ptlrpc_set_import_active(imp, val);
  77         else
  78                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  79                        (unsigned int)val);
  80         class_import_put(imp);
  81
  82         return rc ?: count;
  83 }
  84 LUSTRE_RW_ATTR(active);
  85
  86 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  87                                        struct attribute *attr,
  88                                        char *buf)
  89 {
  90         struct obd_device *obd = container_of(kobj, struct obd_device,
  91                                               obd_kset.kobj);
  92         struct client_obd *cli = &obd->u.cli;
  93
  94         return  scnprintf(buf, PAGE_SIZE, "%u\n", cli->cl_max_rpcs_in_flight);
  95 }
  96
  97 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  98                                         struct attribute *attr,
  99                                         const char *buffer,
 100                                         size_t count)
 101 {
 102         struct obd_device *obd = container_of(kobj, struct obd_device,
 103                                               obd_kset.kobj);
 104         struct client_obd *cli = &obd->u.cli;
 105         int adding, added, req_count;
 106         unsigned int val;
 107         int rc;
 108
 109         rc = kstrtouint(buffer, 0, &val);
 110         if (rc)
 111                 return rc;
 112
 113         if (val == 0 || val > OSC_MAX_RIF_MAX)
 114                 return -ERANGE;
 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         return count;
 136 }
 137 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 138
 139 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 140                                  struct attribute *attr,
 141                                  char *buf)
 142 {
 143         struct obd_device *obd = container_of(kobj, struct obd_device,
 144                                               obd_kset.kobj);
 145         struct client_obd *cli = &obd->u.cli;
 146
 147         return scnprintf(buf, PAGE_SIZE, "%lu\n",
 148                          PAGES_TO_MiB(cli->cl_dirty_max_pages));
 149 }
 150
 151 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 152                                   struct attribute *attr,
 153                                   const char *buffer,
 154                                   size_t count)
 155 {
 156         struct obd_device *obd = container_of(kobj, struct obd_device,
 157                                               obd_kset.kobj);
 158         struct client_obd *cli = &obd->u.cli;
 159         unsigned long pages_number, max_dirty_mb;
 160         int rc;
 161
 162         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 163         if (rc)
 164                 return rc;
 165
 166         pages_number = MiB_TO_PAGES(max_dirty_mb);
 167
 168         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 169             pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
 170                 return -ERANGE;
 171
 172         spin_lock(&cli->cl_loi_list_lock);
 173         cli->cl_dirty_max_pages = pages_number;
 174         osc_wake_cache_waiters(cli);
 175         spin_unlock(&cli->cl_loi_list_lock);
 176
 177         return count;
 178 }
 179 LUSTRE_RW_ATTR(max_dirty_mb);
 180
 181 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 182 LUSTRE_RO_ATTR(conn_uuid);
 183
 184 LUSTRE_RW_ATTR(ping);
 185
 186 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 187 {
 188         struct obd_device *obd = m->private;
 189         struct client_obd *cli = &obd->u.cli;
 190         int shift = 20 - PAGE_SHIFT;
 191
 192         seq_printf(m, "used_mb: %ld\n"
 193                    "busy_cnt: %ld\n"
 194                    "reclaim: %llu\n",
 195                    (atomic_long_read(&cli->cl_lru_in_list) +
 196                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 197                     atomic_long_read(&cli->cl_lru_busy),
 198                    cli->cl_lru_reclaim);
 199
 200         return 0;
 201 }
 202
 203 /* shrink the number of caching pages to a specific number */
 204 static ssize_t osc_cached_mb_seq_write(struct file *file,
 205                                        const char __user *buffer,
 206                                        size_t count, loff_t *off)
 207 {
 208         struct seq_file *m = file->private_data;
 209         struct obd_device *obd = m->private;
 210         struct client_obd *cli = &obd->u.cli;
 211         u64 pages_number;
 212         const char *tmp;
 213         long rc;
 214         char kernbuf[128];
 215
 216         if (count >= sizeof(kernbuf))
 217                 return -EINVAL;
 218
 219         if (copy_from_user(kernbuf, buffer, count))
 220                 return -EFAULT;
 221         kernbuf[count] = 0;
 222
 223         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 224         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 225         if (rc < 0)
 226                 return rc;
 227
 228         pages_number >>= PAGE_SHIFT;
 229
 230         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 231         if (rc > 0) {
 232                 struct lu_env *env;
 233                 __u16 refcheck;
 234
 235                 env = cl_env_get(&refcheck);
 236                 if (!IS_ERR(env)) {
 237                         (void)osc_lru_shrink(env, cli, rc, true);
 238                         cl_env_put(env, &refcheck);
 239                 }
 240         }
 241
 242         return count;
 243 }
 244
 245 LPROC_SEQ_FOPS(osc_cached_mb);
 246
 247 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 248                                     struct attribute *attr,
 249                                     char *buf)
 250 {
 251         struct obd_device *obd = container_of(kobj, struct obd_device,
 252                                               obd_kset.kobj);
 253         struct client_obd *cli = &obd->u.cli;
 254
 255         return scnprintf(buf, PAGE_SIZE, "%lu\n",
 256                          cli->cl_dirty_pages << PAGE_SHIFT);
 257 }
 258 LUSTRE_RO_ATTR(cur_dirty_bytes);
 259
 260 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 261 {
 262         struct obd_device *obd = m->private;
 263         struct client_obd *cli = &obd->u.cli;
 264
 265         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 266         return 0;
 267 }
 268
 269 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 270                                              const char __user *buffer,
 271                                              size_t count, loff_t *off)
 272 {
 273         struct seq_file *m = file->private_data;
 274         struct obd_device *obd = m->private;
 275         struct client_obd *cli = &obd->u.cli;
 276         struct obd_import *imp;
 277         char kernbuf[22] = "";
 278         u64 val;
 279         int rc;
 280
 281         if (obd == NULL)
 282                 return 0;
 283
 284         if (count >= sizeof(kernbuf))
 285                 return -EINVAL;
 286
 287         if (copy_from_user(kernbuf, buffer, count))
 288                 return -EFAULT;
 289         kernbuf[count] = 0;
 290
 291         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 292         if (rc < 0)
 293                 return rc;
 294
 295         /* this is only for shrinking grant */
 296         if (val >= cli->cl_avail_grant)
 297                 return 0;
 298
 299         with_imp_locked(obd, imp, rc)
 300                 if (imp->imp_state == LUSTRE_IMP_FULL)
 301                         rc = osc_shrink_grant_to_target(cli, val);
 302
 303         return rc ? rc : count;
 304 }
 305 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 306
 307 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 308                                          struct attribute *attr,
 309                                          char *buf)
 310 {
 311         struct obd_device *obd = container_of(kobj, struct obd_device,
 312                                               obd_kset.kobj);
 313         struct client_obd *cli = &obd->u.cli;
 314
 315         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_lost_grant);
 316 }
 317 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 318
 319 static ssize_t cur_dirty_grant_bytes_show(struct kobject *kobj,
 320                                           struct attribute *attr,
 321                                           char *buf)
 322 {
 323         struct obd_device *obd = container_of(kobj, struct obd_device,
 324                                               obd_kset.kobj);
 325         struct client_obd *cli = &obd->u.cli;
 326
 327         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_dirty_grant);
 328 }
 329 LUSTRE_RO_ATTR(cur_dirty_grant_bytes);
 330
 331 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 332                                           struct attribute *attr,
 333                                           char *buf)
 334 {
 335         struct obd_device *obd = container_of(kobj, struct obd_device,
 336                                               obd_kset.kobj);
 337
 338         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 339 }
 340
 341 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 342                                            struct attribute *attr,
 343                                            const char *buffer,
 344                                            size_t count)
 345 {
 346         struct obd_device *obd = container_of(kobj, struct obd_device,
 347                                               obd_kset.kobj);
 348         unsigned int val;
 349         int rc;
 350
 351         rc = kstrtouint(buffer, 0, &val);
 352         if (rc)
 353                 return rc;
 354
 355         if (val == 0)
 356                 return -ERANGE;
 357
 358         obd->u.cli.cl_grant_shrink_interval = val;
 359         osc_update_next_shrink(&obd->u.cli);
 360         osc_schedule_grant_work();
 361
 362         return count;
 363 }
 364 LUSTRE_RW_ATTR(grant_shrink_interval);
 365
 366 static ssize_t enable_page_cache_shrink_show(struct kobject *kobj,
 367                                              struct attribute *attr,
 368                                              char *buf)
 369 {
 370         return scnprintf(buf, PAGE_SIZE, "%d\n", osc_page_cache_shrink_enabled);
 371 }
 372
 373 static ssize_t enable_page_cache_shrink_store(struct kobject *kobj,
 374                                               struct attribute *attr,
 375                                               const char *buffer,
 376                                               size_t count)
 377 {
 378         bool val;
 379         int rc;
 380
 381         rc = kstrtobool(buffer, &val);
 382         if (rc)
 383                 return rc;
 384
 385         osc_page_cache_shrink_enabled = val;
 386         return count;
 387 }
 388 LUSTRE_RW_ATTR(enable_page_cache_shrink);
 389
 390 static ssize_t checksums_show(struct kobject *kobj,
 391                               struct attribute *attr,
 392                               char *buf)
 393 {
 394         struct obd_device *obd = container_of(kobj, struct obd_device,
 395                                               obd_kset.kobj);
 396
 397         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum);
 398 }
 399
 400 static ssize_t checksums_store(struct kobject *kobj,
 401                                struct attribute *attr,
 402                                const char *buffer,
 403                                size_t count)
 404 {
 405         struct obd_device *obd = container_of(kobj, struct obd_device,
 406                                               obd_kset.kobj);
 407         bool val;
 408         int rc;
 409
 410         rc = kstrtobool(buffer, &val);
 411         if (rc)
 412                 return rc;
 413
 414         obd->u.cli.cl_checksum = val;
 415
 416         return count;
 417 }
 418 LUSTRE_RW_ATTR(checksums);
 419
 420 DECLARE_CKSUM_NAME;
 421
 422 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 423 {
 424         struct obd_device *obd = m->private;
 425         int i;
 426
 427         if (obd == NULL)
 428                 return 0;
 429
 430         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 431                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 432                         continue;
 433                 if (obd->u.cli.cl_cksum_type == BIT(i))
 434                         seq_printf(m, "[%s] ", cksum_name[i]);
 435                 else
 436                         seq_printf(m, "%s ", cksum_name[i]);
 437         }
 438         seq_puts(m, "\n");
 439
 440         return 0;
 441 }
 442
 443 static ssize_t osc_checksum_type_seq_write(struct file *file,
 444                                            const char __user *buffer,
 445                                            size_t count, loff_t *off)
 446 {
 447         struct seq_file *m = file->private_data;
 448         struct obd_device *obd = m->private;
 449         char kernbuf[10];
 450         int rc = -EINVAL;
 451         int i;
 452
 453         if (obd == NULL)
 454                 return 0;
 455
 456         if (count > sizeof(kernbuf) - 1)
 457                 return -EINVAL;
 458         if (copy_from_user(kernbuf, buffer, count))
 459                 return -EFAULT;
 460
 461         if (count > 0 && kernbuf[count - 1] == '\n')
 462                 kernbuf[count - 1] = '\0';
 463         else
 464                 kernbuf[count] = '\0';
 465
 466         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 467                 if (strcasecmp(kernbuf, cksum_name[i]) == 0) {
 468                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 469                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 470                                 obd->u.cli.cl_cksum_type = BIT(i);
 471                                 rc = count;
 472                         } else {
 473                                 rc = -EOPNOTSUPP;
 474                         }
 475                         break;
 476                 }
 477         }
 478         return rc;
 479 }
 480 LPROC_SEQ_FOPS(osc_checksum_type);
 481
 482 static ssize_t resend_count_show(struct kobject *kobj,
 483                                  struct attribute *attr,
 484                                  char *buf)
 485 {
 486         struct obd_device *obd = container_of(kobj, struct obd_device,
 487                                               obd_kset.kobj);
 488
 489         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 490 }
 491
 492 static ssize_t resend_count_store(struct kobject *kobj,
 493                                   struct attribute *attr,
 494                                   const char *buffer,
 495                                   size_t count)
 496 {
 497         struct obd_device *obd = container_of(kobj, struct obd_device,
 498                                               obd_kset.kobj);
 499         unsigned int val;
 500         int rc;
 501
 502         rc = kstrtouint(buffer, 10, &val);
 503         if (rc)
 504                 return rc;
 505
 506         atomic_set(&obd->u.cli.cl_resends, val);
 507
 508         return count;
 509 }
 510 LUSTRE_RW_ATTR(resend_count);
 511
 512 static ssize_t checksum_dump_show(struct kobject *kobj,
 513                                   struct attribute *attr,
 514                                   char *buf)
 515 {
 516         struct obd_device *obd = container_of(kobj, struct obd_device,
 517                                               obd_kset.kobj);
 518
 519         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum_dump);
 520 }
 521
 522 static ssize_t checksum_dump_store(struct kobject *kobj,
 523                                    struct attribute *attr,
 524                                    const char *buffer,
 525                                    size_t count)
 526 {
 527         struct obd_device *obd = container_of(kobj, struct obd_device,
 528                                               obd_kset.kobj);
 529         bool val;
 530         int rc;
 531
 532         rc = kstrtobool(buffer, &val);
 533         if (rc)
 534                 return rc;
 535
 536         obd->u.cli.cl_checksum_dump = val;
 537
 538         return count;
 539 }
 540 LUSTRE_RW_ATTR(checksum_dump);
 541
 542 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 543                                        struct attribute *attr,
 544                                        char *buf)
 545 {
 546         struct obd_device *obd = container_of(kobj, struct obd_device,
 547                                               obd_kset.kobj);
 548
 549         return sprintf(buf, "%u\n",
 550                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 551 }
 552 LUSTRE_RO_ATTR(destroys_in_flight);
 553
 554 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 555
 556 LUSTRE_RW_ATTR(short_io_bytes);
 557
 558 #ifdef CONFIG_PROC_FS
 559 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 560 {
 561         struct obd_device *obd = m->private;
 562         struct client_obd *cli = &obd->u.cli;
 563         long pages;
 564         int mb;
 565
 566         pages = atomic_long_read(&cli->cl_unstable_count);
 567         mb    = (pages * PAGE_SIZE) >> 20;
 568
 569         seq_printf(m, "unstable_pages: %20ld\n"
 570                    "unstable_mb:              %10d\n",
 571                    pages, mb);
 572         return 0;
 573 }
 574 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 575
 576 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 577                                  char *buf)
 578 {
 579         struct obd_device *obd = container_of(kobj, struct obd_device,
 580                                               obd_kset.kobj);
 581         struct obd_import *imp;
 582         int ret;
 583
 584         with_imp_locked(obd, imp, ret)
 585                 ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
 586
 587         return ret;
 588 }
 589
 590 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 591                                   const char *buffer, size_t count)
 592 {
 593         struct obd_device *obd = container_of(kobj, struct obd_device,
 594                                               obd_kset.kobj);
 595         struct obd_import *imp;
 596         struct ptlrpc_request *req;
 597         unsigned int idle_debug = 0;
 598         unsigned int val;
 599         int rc;
 600
 601         if (strncmp(buffer, "debug", 5) == 0) {
 602                 idle_debug = D_CONSOLE;
 603         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 604                 idle_debug = D_HA;
 605         } else {
 606                 rc = kstrtouint(buffer, 10, &val);
 607                 if (rc)
 608                         return rc;
 609
 610                 if (val > CONNECTION_SWITCH_MAX)
 611                         return -ERANGE;
 612         }
 613
 614         with_imp_locked(obd, imp, rc) {
 615                 if (idle_debug) {
 616                         imp->imp_idle_debug = idle_debug;
 617                 } else {
 618                         if (!val) {
 619                                 /* initiate the connection if it's in IDLE state */
 620                                 req = ptlrpc_request_alloc(imp,
 621                                                            &RQF_OST_STATFS);
 622                                 if (req != NULL)
 623                                         ptlrpc_req_finished(req);
 624                         }
 625                         imp->imp_idle_timeout = val;
 626                 }
 627         }
 628
 629         return count;
 630 }
 631 LUSTRE_RW_ATTR(idle_timeout);
 632
 633 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 634                                   const char *buffer, size_t count)
 635 {
 636         struct obd_device *obd = container_of(kobj, struct obd_device,
 637                                               obd_kset.kobj);
 638         struct obd_import *imp;
 639         struct ptlrpc_request *req;
 640         int rc;
 641
 642         with_imp_locked(obd, imp, rc) {
 643                 /* to initiate the connection if it's in IDLE state */
 644                 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
 645                 if (req)
 646                         ptlrpc_req_finished(req);
 647                 ptlrpc_pinger_force(imp);
 648         }
 649
 650         return rc ?: count;
 651 }
 652 LUSTRE_WO_ATTR(idle_connect);
 653
 654 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 655                                  char *buf)
 656 {
 657         struct obd_device *obd = container_of(kobj, struct obd_device,
 658                                               obd_kset.kobj);
 659         struct obd_import *imp;
 660         ssize_t len;
 661
 662         with_imp_locked(obd, imp, len)
 663                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 664                                 !imp->imp_grant_shrink_disabled &&
 665                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 666                                              GRANT_SHRINK));
 667
 668         return len;
 669 }
 670
 671 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 672                                   const char *buffer, size_t count)
 673 {
 674         struct obd_device *obd = container_of(kobj, struct obd_device,
 675                                               obd_kset.kobj);
 676         struct obd_import *imp;
 677         bool val;
 678         int rc;
 679
 680         if (obd == NULL)
 681                 return 0;
 682
 683         rc = kstrtobool(buffer, &val);
 684         if (rc)
 685                 return rc;
 686
 687         with_imp_locked(obd, imp, rc) {
 688                 spin_lock(&imp->imp_lock);
 689                 imp->imp_grant_shrink_disabled = !val;
 690                 spin_unlock(&imp->imp_lock);
 691         }
 692
 693         return rc ?: count;
 694 }
 695 LUSTRE_RW_ATTR(grant_shrink);
 696
 697 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 698 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 699 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 700 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 701
 702 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 703 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 704
 705 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 706         { .name =       "connect_flags",
 707           .fops =       &osc_connect_flags_fops         },
 708         { .name =       "ost_server_uuid",
 709           .fops =       &osc_server_uuid_fops           },
 710         { .name =       "max_pages_per_rpc",
 711           .fops =       &osc_obd_max_pages_per_rpc_fops },
 712         { .name =       "osc_cached_mb",
 713           .fops =       &osc_cached_mb_fops             },
 714         { .name =       "cur_grant_bytes",
 715           .fops =       &osc_cur_grant_bytes_fops       },
 716         { .name =       "checksum_type",
 717           .fops =       &osc_checksum_type_fops         },
 718         { .name =       "timeouts",
 719           .fops =       &osc_timeouts_fops              },
 720         { .name =       "import",
 721           .fops =       &osc_import_fops                },
 722         { .name =       "state",
 723           .fops =       &osc_state_fops                 },
 724         { .name =       "pinger_recov",
 725           .fops =       &osc_pinger_recov_fops          },
 726         { .name =       "unstable_stats",
 727           .fops =       &osc_unstable_stats_fops        },
 728         { NULL }
 729 };
 730
 731 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 732 {
 733         struct obd_device *obd = seq->private;
 734         struct client_obd *cli = &obd->u.cli;
 735         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 736         int i;
 737
 738         spin_lock(&cli->cl_loi_list_lock);
 739
 740         lprocfs_stats_header(seq, ktime_get_real(), cli->cl_stats_init, 25,
 741                              ":", true, "");
 742         seq_printf(seq, "read RPCs in flight:  %d\n",
 743                    cli->cl_r_in_flight);
 744         seq_printf(seq, "write RPCs in flight: %d\n",
 745                    cli->cl_w_in_flight);
 746         seq_printf(seq, "pending write pages:  %d\n",
 747                    atomic_read(&cli->cl_pending_w_pages));
 748         seq_printf(seq, "pending read pages:   %d\n",
 749                    atomic_read(&cli->cl_pending_r_pages));
 750
 751         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 752         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 753         seq_printf(seq, "       rpcs   %% cum %%\n");
 754
 755         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 756         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 757
 758         read_cum = 0;
 759         write_cum = 0;
 760         for (i = 0; i < OBD_HIST_MAX; i++) {
 761                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 762                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 763
 764                 read_cum += r;
 765                 write_cum += w;
 766                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 767                            1 << i, r, pct(r, read_tot),
 768                            pct(read_cum, read_tot), w,
 769                            pct(w, write_tot),
 770                            pct(write_cum, write_tot));
 771                 if (read_cum == read_tot && write_cum == write_tot)
 772                         break;
 773         }
 774
 775         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 776         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 777         seq_printf(seq, "       rpcs   %% cum %%\n");
 778
 779         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 780         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 781
 782         read_cum = 0;
 783         write_cum = 0;
 784         for (i = 1; i < OBD_HIST_MAX; i++) {
 785                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 786                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 787                 read_cum += r;
 788                 write_cum += w;
 789                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 790                            i, r, pct(r, read_tot),
 791                            pct(read_cum, read_tot), w,
 792                            pct(w, write_tot),
 793                            pct(write_cum, write_tot));
 794                 if (read_cum == read_tot && write_cum == write_tot)
 795                         break;
 796         }
 797
 798         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 799         seq_printf(seq, "offset                rpcs   %% cum %% |");
 800         seq_printf(seq, "       rpcs   %% cum %%\n");
 801
 802         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 803         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 804
 805         read_cum = 0;
 806         write_cum = 0;
 807         for (i = 0; i < OBD_HIST_MAX; i++) {
 808                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 809                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 810                 read_cum += r;
 811                 write_cum += w;
 812                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 813                            (i == 0) ? 0 : 1 << (i - 1),
 814                            r, pct(r, read_tot), pct(read_cum, read_tot),
 815                            w, pct(w, write_tot), pct(write_cum, write_tot));
 816                 if (read_cum == read_tot && write_cum == write_tot)
 817                         break;
 818         }
 819
 820         spin_unlock(&cli->cl_loi_list_lock);
 821
 822         return 0;
 823 }
 824
 825 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 826                                        const char __user *buf,
 827                                        size_t len, loff_t *off)
 828 {
 829         struct seq_file *seq = file->private_data;
 830         struct obd_device *obd = seq->private;
 831         struct client_obd *cli = &obd->u.cli;
 832
 833         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 834         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 835         lprocfs_oh_clear(&cli->cl_read_page_hist);
 836         lprocfs_oh_clear(&cli->cl_write_page_hist);
 837         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 838         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 839         cli->cl_stats_init = ktime_get_real();
 840
 841         return len;
 842 }
 843 LPROC_SEQ_FOPS(osc_rpc_stats);
 844
 845 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 846 {
 847         struct obd_device *obd = seq->private;
 848         struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
 849
 850         lprocfs_stats_header(seq, ktime_get_real(), stats->os_init, 25, ":",
 851                              true, "");
 852         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 853                    stats->os_lockless_writes);
 854         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 855                    stats->os_lockless_reads);
 856         return 0;
 857 }
 858
 859 static ssize_t osc_stats_seq_write(struct file *file,
 860                                    const char __user *buf,
 861                                    size_t len, loff_t *off)
 862 {
 863         struct seq_file *seq = file->private_data;
 864         struct obd_device *obd = seq->private;
 865         struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
 866
 867         memset(stats, 0, sizeof(*stats));
 868         stats->os_init = ktime_get_real();
 869
 870         return len;
 871 }
 872
 873 LPROC_SEQ_FOPS(osc_stats);
 874
 875 static int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 876 {
 877         int rc;
 878
 879         rc = lprocfs_seq_create(obd->obd_proc_entry, "osc_stats", 0644,
 880                                 &osc_stats_fops, obd);
 881         if (rc == 0)
 882                 rc = lprocfs_obd_seq_create(obd, "rpc_stats", 0644,
 883                                             &osc_rpc_stats_fops, obd);
 884
 885         return rc;
 886 }
 887 #endif /* CONFIG_PROC_FS */
 888
 889 LUSTRE_OBD_UINT_PARAM_ATTR(at_min);
 890 LUSTRE_OBD_UINT_PARAM_ATTR(at_max);
 891 LUSTRE_OBD_UINT_PARAM_ATTR(at_history);
 892 LUSTRE_OBD_UINT_PARAM_ATTR(ldlm_enqueue_min);
 893
 894 static struct attribute *osc_attrs[] = {
 895         &lustre_attr_active.attr,
 896         &lustre_attr_enable_page_cache_shrink.attr,
 897         &lustre_attr_checksums.attr,
 898         &lustre_attr_checksum_dump.attr,
 899         &lustre_attr_cur_dirty_bytes.attr,
 900         &lustre_attr_cur_lost_grant_bytes.attr,
 901         &lustre_attr_cur_dirty_grant_bytes.attr,
 902         &lustre_attr_destroys_in_flight.attr,
 903         &lustre_attr_grant_shrink_interval.attr,
 904         &lustre_attr_max_dirty_mb.attr,
 905         &lustre_attr_max_rpcs_in_flight.attr,
 906         &lustre_attr_short_io_bytes.attr,
 907         &lustre_attr_resend_count.attr,
 908         &lustre_attr_ost_conn_uuid.attr,
 909         &lustre_attr_conn_uuid.attr,
 910         &lustre_attr_ping.attr,
 911         &lustre_attr_idle_timeout.attr,
 912         &lustre_attr_idle_connect.attr,
 913         &lustre_attr_grant_shrink.attr,
 914         &lustre_attr_at_max.attr,
 915         &lustre_attr_at_min.attr,
 916         &lustre_attr_at_history.attr,
 917         &lustre_attr_ldlm_enqueue_min.attr,
 918         NULL,
 919 };
 920
 921 KOBJ_ATTRIBUTE_GROUPS(osc); /* creates osc_groups */
 922
 923 int osc_tunables_init(struct obd_device *obd)
 924 {
 925         int rc;
 926
 927         obd->obd_vars = lprocfs_osc_obd_vars;
 928         obd->obd_ktype.default_groups = KOBJ_ATTR_GROUPS(osc);
 929         rc = lprocfs_obd_setup(obd, false);
 930         if (rc)
 931                 return rc;
 932 #ifdef CONFIG_PROC_FS
 933         /* If the basic OSC proc tree construction succeeded then
 934          * lets do the rest.
 935          */
 936         rc = lprocfs_osc_attach_seqstat(obd);
 937         if (rc)
 938                 goto obd_cleanup;
 939
 940 #endif /* CONFIG_PROC_FS */
 941         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 942         if (rc)
 943                 goto obd_cleanup;
 944
 945         ptlrpc_lprocfs_register_obd(obd);
 946 obd_cleanup:
 947         if (rc)
 948                 lprocfs_obd_cleanup(obd);
 949         return rc;
 950 }