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 checksums_show(struct kobject *kobj,
 367                               struct attribute *attr,
 368                               char *buf)
 369 {
 370         struct obd_device *obd = container_of(kobj, struct obd_device,
 371                                               obd_kset.kobj);
 372
 373         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum);
 374 }
 375
 376 static ssize_t checksums_store(struct kobject *kobj,
 377                                struct attribute *attr,
 378                                const char *buffer,
 379                                size_t count)
 380 {
 381         struct obd_device *obd = container_of(kobj, struct obd_device,
 382                                               obd_kset.kobj);
 383         bool val;
 384         int rc;
 385
 386         rc = kstrtobool(buffer, &val);
 387         if (rc)
 388                 return rc;
 389
 390         obd->u.cli.cl_checksum = val;
 391
 392         return count;
 393 }
 394 LUSTRE_RW_ATTR(checksums);
 395
 396 DECLARE_CKSUM_NAME;
 397
 398 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 399 {
 400         struct obd_device *obd = m->private;
 401         int i;
 402
 403         if (obd == NULL)
 404                 return 0;
 405
 406         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 407                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 408                         continue;
 409                 if (obd->u.cli.cl_cksum_type == BIT(i))
 410                         seq_printf(m, "[%s] ", cksum_name[i]);
 411                 else
 412                         seq_printf(m, "%s ", cksum_name[i]);
 413         }
 414         seq_puts(m, "\n");
 415
 416         return 0;
 417 }
 418
 419 static ssize_t osc_checksum_type_seq_write(struct file *file,
 420                                            const char __user *buffer,
 421                                            size_t count, loff_t *off)
 422 {
 423         struct seq_file *m = file->private_data;
 424         struct obd_device *obd = m->private;
 425         char kernbuf[10];
 426         int rc = -EINVAL;
 427         int i;
 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
 437         if (count > 0 && kernbuf[count - 1] == '\n')
 438                 kernbuf[count - 1] = '\0';
 439         else
 440                 kernbuf[count] = '\0';
 441
 442         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 443                 if (strcmp(kernbuf, cksum_name[i]) == 0) {
 444                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 445                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 446                                 obd->u.cli.cl_cksum_type = BIT(i);
 447                                 rc = count;
 448                         } else {
 449                                 rc = -ENOTSUPP;
 450                         }
 451                         break;
 452                 }
 453         }
 454         return rc;
 455 }
 456 LPROC_SEQ_FOPS(osc_checksum_type);
 457
 458 static ssize_t resend_count_show(struct kobject *kobj,
 459                                  struct attribute *attr,
 460                                  char *buf)
 461 {
 462         struct obd_device *obd = container_of(kobj, struct obd_device,
 463                                               obd_kset.kobj);
 464
 465         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 466 }
 467
 468 static ssize_t resend_count_store(struct kobject *kobj,
 469                                   struct attribute *attr,
 470                                   const char *buffer,
 471                                   size_t count)
 472 {
 473         struct obd_device *obd = container_of(kobj, struct obd_device,
 474                                               obd_kset.kobj);
 475         unsigned int val;
 476         int rc;
 477
 478         rc = kstrtouint(buffer, 10, &val);
 479         if (rc)
 480                 return rc;
 481
 482         atomic_set(&obd->u.cli.cl_resends, val);
 483
 484         return count;
 485 }
 486 LUSTRE_RW_ATTR(resend_count);
 487
 488 static ssize_t checksum_dump_show(struct kobject *kobj,
 489                                   struct attribute *attr,
 490                                   char *buf)
 491 {
 492         struct obd_device *obd = container_of(kobj, struct obd_device,
 493                                               obd_kset.kobj);
 494
 495         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum_dump);
 496 }
 497
 498 static ssize_t checksum_dump_store(struct kobject *kobj,
 499                                    struct attribute *attr,
 500                                    const char *buffer,
 501                                    size_t count)
 502 {
 503         struct obd_device *obd = container_of(kobj, struct obd_device,
 504                                               obd_kset.kobj);
 505         bool val;
 506         int rc;
 507
 508         rc = kstrtobool(buffer, &val);
 509         if (rc)
 510                 return rc;
 511
 512         obd->u.cli.cl_checksum_dump = val;
 513
 514         return count;
 515 }
 516 LUSTRE_RW_ATTR(checksum_dump);
 517
 518 static ssize_t contention_seconds_show(struct kobject *kobj,
 519                                        struct attribute *attr,
 520                                        char *buf)
 521 {
 522         struct obd_device *obd = container_of(kobj, struct obd_device,
 523                                               obd_kset.kobj);
 524         struct osc_device *od = obd2osc_dev(obd);
 525
 526         return sprintf(buf, "%lld\n", od->od_contention_time);
 527 }
 528
 529 static ssize_t contention_seconds_store(struct kobject *kobj,
 530                                         struct attribute *attr,
 531                                         const char *buffer,
 532                                         size_t count)
 533 {
 534         struct obd_device *obd = container_of(kobj, struct obd_device,
 535                                               obd_kset.kobj);
 536         struct osc_device *od = obd2osc_dev(obd);
 537         unsigned int val;
 538         int rc;
 539
 540         rc = kstrtouint(buffer, 0, &val);
 541         if (rc)
 542                 return rc;
 543
 544         od->od_contention_time = val;
 545
 546         return count;
 547 }
 548 LUSTRE_RW_ATTR(contention_seconds);
 549
 550 static ssize_t lockless_truncate_show(struct kobject *kobj,
 551                                       struct attribute *attr,
 552                                       char *buf)
 553 {
 554         struct obd_device *obd = container_of(kobj, struct obd_device,
 555                                               obd_kset.kobj);
 556         struct osc_device *od = obd2osc_dev(obd);
 557
 558         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 559 }
 560
 561 static ssize_t lockless_truncate_store(struct kobject *kobj,
 562                                        struct attribute *attr,
 563                                        const char *buffer,
 564                                        size_t count)
 565 {
 566         struct obd_device *obd = container_of(kobj, struct obd_device,
 567                                               obd_kset.kobj);
 568         struct osc_device *od = obd2osc_dev(obd);
 569         bool val;
 570         int rc;
 571
 572         rc = kstrtobool(buffer, &val);
 573         if (rc)
 574                 return rc;
 575
 576         od->od_lockless_truncate = val;
 577
 578         return count;
 579 }
 580 LUSTRE_RW_ATTR(lockless_truncate);
 581
 582 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 583                                        struct attribute *attr,
 584                                        char *buf)
 585 {
 586         struct obd_device *obd = container_of(kobj, struct obd_device,
 587                                               obd_kset.kobj);
 588
 589         return sprintf(buf, "%u\n",
 590                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 591 }
 592 LUSTRE_RO_ATTR(destroys_in_flight);
 593
 594 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 595
 596 LUSTRE_RW_ATTR(short_io_bytes);
 597
 598 #ifdef CONFIG_PROC_FS
 599 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 600 {
 601         struct obd_device *obd = m->private;
 602         struct client_obd *cli = &obd->u.cli;
 603         long pages;
 604         int mb;
 605
 606         pages = atomic_long_read(&cli->cl_unstable_count);
 607         mb    = (pages * PAGE_SIZE) >> 20;
 608
 609         seq_printf(m, "unstable_pages: %20ld\n"
 610                    "unstable_mb:              %10d\n",
 611                    pages, mb);
 612         return 0;
 613 }
 614 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 615
 616 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 617                                  char *buf)
 618 {
 619         struct obd_device *obd = container_of(kobj, struct obd_device,
 620                                               obd_kset.kobj);
 621         struct obd_import *imp;
 622         int ret;
 623
 624         with_imp_locked(obd, imp, ret)
 625                 ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
 626
 627         return ret;
 628 }
 629
 630 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 631                                   const char *buffer, size_t count)
 632 {
 633         struct obd_device *obd = container_of(kobj, struct obd_device,
 634                                               obd_kset.kobj);
 635         struct obd_import *imp;
 636         struct ptlrpc_request *req;
 637         unsigned int idle_debug = 0;
 638         unsigned int val;
 639         int rc;
 640
 641         if (strncmp(buffer, "debug", 5) == 0) {
 642                 idle_debug = D_CONSOLE;
 643         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 644                 idle_debug = D_HA;
 645         } else {
 646                 rc = kstrtouint(buffer, 10, &val);
 647                 if (rc)
 648                         return rc;
 649
 650                 if (val > CONNECTION_SWITCH_MAX)
 651                         return -ERANGE;
 652         }
 653
 654         with_imp_locked(obd, imp, rc) {
 655                 if (idle_debug) {
 656                         imp->imp_idle_debug = idle_debug;
 657                 } else {
 658                         if (!val) {
 659                                 /* initiate the connection if it's in IDLE state */
 660                                 req = ptlrpc_request_alloc(imp,
 661                                                            &RQF_OST_STATFS);
 662                                 if (req != NULL)
 663                                         ptlrpc_req_finished(req);
 664                         }
 665                         imp->imp_idle_timeout = val;
 666                 }
 667         }
 668
 669         return count;
 670 }
 671 LUSTRE_RW_ATTR(idle_timeout);
 672
 673 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 674                                   const char *buffer, size_t count)
 675 {
 676         struct obd_device *obd = container_of(kobj, struct obd_device,
 677                                               obd_kset.kobj);
 678         struct obd_import *imp;
 679         struct ptlrpc_request *req;
 680         int rc;
 681
 682         with_imp_locked(obd, imp, rc) {
 683                 /* to initiate the connection if it's in IDLE state */
 684                 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
 685                 if (req)
 686                         ptlrpc_req_finished(req);
 687                 ptlrpc_pinger_force(imp);
 688         }
 689
 690         return rc ?: count;
 691 }
 692 LUSTRE_WO_ATTR(idle_connect);
 693
 694 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 695                                  char *buf)
 696 {
 697         struct obd_device *obd = container_of(kobj, struct obd_device,
 698                                               obd_kset.kobj);
 699         struct obd_import *imp;
 700         ssize_t len;
 701
 702         with_imp_locked(obd, imp, len)
 703                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 704                                 !imp->imp_grant_shrink_disabled &&
 705                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 706                                              GRANT_SHRINK));
 707
 708         return len;
 709 }
 710
 711 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 712                                   const char *buffer, size_t count)
 713 {
 714         struct obd_device *obd = container_of(kobj, struct obd_device,
 715                                               obd_kset.kobj);
 716         struct obd_import *imp;
 717         bool val;
 718         int rc;
 719
 720         if (obd == NULL)
 721                 return 0;
 722
 723         rc = kstrtobool(buffer, &val);
 724         if (rc)
 725                 return rc;
 726
 727         with_imp_locked(obd, imp, rc) {
 728                 spin_lock(&imp->imp_lock);
 729                 imp->imp_grant_shrink_disabled = !val;
 730                 spin_unlock(&imp->imp_lock);
 731         }
 732
 733         return rc ?: count;
 734 }
 735 LUSTRE_RW_ATTR(grant_shrink);
 736
 737 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 738 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 739 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 740 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 741
 742 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 743 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 744
 745 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 746         { .name =       "connect_flags",
 747           .fops =       &osc_connect_flags_fops         },
 748         { .name =       "ost_server_uuid",
 749           .fops =       &osc_server_uuid_fops           },
 750         { .name =       "max_pages_per_rpc",
 751           .fops =       &osc_obd_max_pages_per_rpc_fops },
 752         { .name =       "osc_cached_mb",
 753           .fops =       &osc_cached_mb_fops             },
 754         { .name =       "cur_grant_bytes",
 755           .fops =       &osc_cur_grant_bytes_fops       },
 756         { .name =       "checksum_type",
 757           .fops =       &osc_checksum_type_fops         },
 758         { .name =       "timeouts",
 759           .fops =       &osc_timeouts_fops              },
 760         { .name =       "import",
 761           .fops =       &osc_import_fops                },
 762         { .name =       "state",
 763           .fops =       &osc_state_fops                 },
 764         { .name =       "pinger_recov",
 765           .fops =       &osc_pinger_recov_fops          },
 766         { .name =       "unstable_stats",
 767           .fops =       &osc_unstable_stats_fops        },
 768         { NULL }
 769 };
 770
 771 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 772 {
 773         struct timespec64 now;
 774         struct obd_device *obd = seq->private;
 775         struct client_obd *cli = &obd->u.cli;
 776         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 777         int i;
 778
 779         ktime_get_real_ts64(&now);
 780
 781         spin_lock(&cli->cl_loi_list_lock);
 782
 783         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 784                    (s64)now.tv_sec, now.tv_nsec);
 785         seq_printf(seq, "read RPCs in flight:  %d\n",
 786                    cli->cl_r_in_flight);
 787         seq_printf(seq, "write RPCs in flight: %d\n",
 788                    cli->cl_w_in_flight);
 789         seq_printf(seq, "pending write pages:  %d\n",
 790                    atomic_read(&cli->cl_pending_w_pages));
 791         seq_printf(seq, "pending read pages:   %d\n",
 792                    atomic_read(&cli->cl_pending_r_pages));
 793
 794         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 795         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 796         seq_printf(seq, "       rpcs   %% cum %%\n");
 797
 798         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 799         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 800
 801         read_cum = 0;
 802         write_cum = 0;
 803         for (i = 0; i < OBD_HIST_MAX; i++) {
 804                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 805                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 806
 807                 read_cum += r;
 808                 write_cum += w;
 809                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 810                            1 << i, r, pct(r, read_tot),
 811                            pct(read_cum, read_tot), w,
 812                            pct(w, write_tot),
 813                            pct(write_cum, write_tot));
 814                 if (read_cum == read_tot && write_cum == write_tot)
 815                         break;
 816         }
 817
 818         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 819         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 820         seq_printf(seq, "       rpcs   %% cum %%\n");
 821
 822         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 823         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 824
 825         read_cum = 0;
 826         write_cum = 0;
 827         for (i = 1; i < OBD_HIST_MAX; i++) {
 828                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 829                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 830                 read_cum += r;
 831                 write_cum += w;
 832                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 833                            i, r, pct(r, read_tot),
 834                            pct(read_cum, read_tot), w,
 835                            pct(w, write_tot),
 836                            pct(write_cum, write_tot));
 837                 if (read_cum == read_tot && write_cum == write_tot)
 838                         break;
 839         }
 840
 841         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 842         seq_printf(seq, "offset                rpcs   %% cum %% |");
 843         seq_printf(seq, "       rpcs   %% cum %%\n");
 844
 845         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 846         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 847
 848         read_cum = 0;
 849         write_cum = 0;
 850         for (i = 0; i < OBD_HIST_MAX; i++) {
 851                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 852                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 853                 read_cum += r;
 854                 write_cum += w;
 855                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 856                            (i == 0) ? 0 : 1 << (i - 1),
 857                            r, pct(r, read_tot), pct(read_cum, read_tot),
 858                            w, pct(w, write_tot), pct(write_cum, write_tot));
 859                 if (read_cum == read_tot && write_cum == write_tot)
 860                         break;
 861         }
 862
 863         spin_unlock(&cli->cl_loi_list_lock);
 864
 865         return 0;
 866 }
 867
 868 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 869                                        const char __user *buf,
 870                                        size_t len, loff_t *off)
 871 {
 872         struct seq_file *seq = file->private_data;
 873         struct obd_device *obd = seq->private;
 874         struct client_obd *cli = &obd->u.cli;
 875
 876         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 877         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 878         lprocfs_oh_clear(&cli->cl_read_page_hist);
 879         lprocfs_oh_clear(&cli->cl_write_page_hist);
 880         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 881         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 882
 883         return len;
 884 }
 885 LPROC_SEQ_FOPS(osc_rpc_stats);
 886
 887 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 888 {
 889         struct timespec64 now;
 890         struct obd_device *obd = seq->private;
 891         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 892
 893         ktime_get_real_ts64(&now);
 894
 895         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 896                    (s64)now.tv_sec, now.tv_nsec);
 897         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 898                    stats->os_lockless_writes);
 899         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 900                    stats->os_lockless_reads);
 901         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 902                    stats->os_lockless_truncates);
 903         return 0;
 904 }
 905
 906 static ssize_t osc_stats_seq_write(struct file *file,
 907                                    const char __user *buf,
 908                                    size_t len, loff_t *off)
 909 {
 910         struct seq_file *seq = file->private_data;
 911         struct obd_device *obd = seq->private;
 912         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 913
 914         memset(stats, 0, sizeof(*stats));
 915         return len;
 916 }
 917
 918 LPROC_SEQ_FOPS(osc_stats);
 919
 920 int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 921 {
 922         int rc;
 923
 924         rc = lprocfs_seq_create(obd->obd_proc_entry, "osc_stats", 0644,
 925                                 &osc_stats_fops, obd);
 926         if (rc == 0)
 927                 rc = lprocfs_obd_seq_create(obd, "rpc_stats", 0644,
 928                                             &osc_rpc_stats_fops, obd);
 929
 930         return rc;
 931 }
 932 #endif /* CONFIG_PROC_FS */
 933
 934 static struct attribute *osc_attrs[] = {
 935         &lustre_attr_active.attr,
 936         &lustre_attr_checksums.attr,
 937         &lustre_attr_checksum_dump.attr,
 938         &lustre_attr_contention_seconds.attr,
 939         &lustre_attr_cur_dirty_bytes.attr,
 940         &lustre_attr_cur_lost_grant_bytes.attr,
 941         &lustre_attr_cur_dirty_grant_bytes.attr,
 942         &lustre_attr_destroys_in_flight.attr,
 943         &lustre_attr_grant_shrink_interval.attr,
 944         &lustre_attr_lockless_truncate.attr,
 945         &lustre_attr_max_dirty_mb.attr,
 946         &lustre_attr_max_rpcs_in_flight.attr,
 947         &lustre_attr_short_io_bytes.attr,
 948         &lustre_attr_resend_count.attr,
 949         &lustre_attr_ost_conn_uuid.attr,
 950         &lustre_attr_conn_uuid.attr,
 951         &lustre_attr_ping.attr,
 952         &lustre_attr_idle_timeout.attr,
 953         &lustre_attr_idle_connect.attr,
 954         &lustre_attr_grant_shrink.attr,
 955         NULL,
 956 };
 957
 958 int osc_tunables_init(struct obd_device *obd)
 959 {
 960         int rc;
 961
 962         obd->obd_vars = lprocfs_osc_obd_vars;
 963         obd->obd_ktype.default_attrs = osc_attrs;
 964         rc = lprocfs_obd_setup(obd, false);
 965         if (rc)
 966                 return rc;
 967 #ifdef CONFIG_PROC_FS
 968         /* If the basic OSC proc tree construction succeeded then
 969          * lets do the rest.
 970          */
 971         rc = lprocfs_osc_attach_seqstat(obd);
 972         if (rc)
 973                 goto obd_cleanup;
 974
 975 #endif /* CONFIG_PROC_FS */
 976         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 977         if (rc)
 978                 goto obd_cleanup;
 979
 980         ptlrpc_lprocfs_register_obd(obd);
 981 obd_cleanup:
 982         if (rc)
 983                 lprocfs_obd_cleanup(obd);
 984         return rc;
 985 }