lustre/osc/lproc_osc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  */
  32 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <linux/version.h>
  35 #include <asm/statfs.h>
  36 #include <obd_cksum.h>
  37 #include <obd_class.h>
  38 #include <lprocfs_status.h>
  39 #include <linux/seq_file.h>
  40 #include <lustre_osc.h>
  41
  42 #include "osc_internal.h"
  43
  44 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  45                            char *buf)
  46 {
  47         struct obd_device *dev = container_of(kobj, struct obd_device,
  48                                               obd_kset.kobj);
  49         int rc;
  50
  51         LPROCFS_CLIMP_CHECK(dev);
  52         rc = sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return rc;
  55 }
  56
  57 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  58                             const char *buffer, size_t count)
  59 {
  60         struct obd_device *dev = container_of(kobj, struct obd_device,
  61                                               obd_kset.kobj);
  62         bool val;
  63         int rc;
  64
  65         rc = kstrtobool(buffer, &val);
  66         if (rc)
  67                 return rc;
  68
  69         /* opposite senses */
  70         if (dev->u.cli.cl_import->imp_deactive == val)
  71                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  72         else
  73                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  74                        (unsigned int)val);
  75
  76         return count;
  77 }
  78 LUSTRE_RW_ATTR(active);
  79
  80 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  81                                        struct attribute *attr,
  82                                        char *buf)
  83 {
  84         struct obd_device *dev = container_of(kobj, struct obd_device,
  85                                               obd_kset.kobj);
  86         struct client_obd *cli = &dev->u.cli;
  87         ssize_t len;
  88
  89         spin_lock(&cli->cl_loi_list_lock);
  90         len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
  91         spin_unlock(&cli->cl_loi_list_lock);
  92         return len;
  93 }
  94
  95 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  96                                         struct attribute *attr,
  97                                         const char *buffer,
  98                                         size_t count)
  99 {
 100         struct obd_device *dev = container_of(kobj, struct obd_device,
 101                                               obd_kset.kobj);
 102         struct client_obd *cli = &dev->u.cli;
 103         int adding, added, req_count;
 104         unsigned int val;
 105         int rc;
 106
 107         rc = kstrtouint(buffer, 0, &val);
 108         if (rc)
 109                 return rc;
 110
 111         if (val == 0 || val > OSC_MAX_RIF_MAX)
 112                 return -ERANGE;
 113
 114         LPROCFS_CLIMP_CHECK(dev);
 115
 116         adding = (int)val - cli->cl_max_rpcs_in_flight;
 117         req_count = atomic_read(&osc_pool_req_count);
 118         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 119                 /*
 120                  * There might be some race which will cause over-limit
 121                  * allocation, but it is fine.
 122                  */
 123                 if (req_count + adding > osc_reqpool_maxreqcount)
 124                         adding = osc_reqpool_maxreqcount - req_count;
 125
 126                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 127                 atomic_add(added, &osc_pool_req_count);
 128         }
 129
 130         spin_lock(&cli->cl_loi_list_lock);
 131         cli->cl_max_rpcs_in_flight = val;
 132         client_adjust_max_dirty(cli);
 133         spin_unlock(&cli->cl_loi_list_lock);
 134
 135         LPROCFS_CLIMP_EXIT(dev);
 136         return count;
 137 }
 138 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 139
 140 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 141                                  struct attribute *attr,
 142                                  char *buf)
 143 {
 144         struct obd_device *dev = container_of(kobj, struct obd_device,
 145                                               obd_kset.kobj);
 146         struct client_obd *cli = &dev->u.cli;
 147         long val;
 148         int mult;
 149
 150         spin_lock(&cli->cl_loi_list_lock);
 151         val = cli->cl_dirty_max_pages;
 152         spin_unlock(&cli->cl_loi_list_lock);
 153
 154         mult = 1 << (20 - PAGE_SHIFT);
 155         return lprocfs_read_frac_helper(buf, PAGE_SIZE, val, mult);
 156 }
 157
 158 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 159                                   struct attribute *attr,
 160                                   const char *buffer,
 161                                   size_t count)
 162 {
 163         struct obd_device *dev = container_of(kobj, struct obd_device,
 164                                               obd_kset.kobj);
 165         struct client_obd *cli = &dev->u.cli;
 166         unsigned long pages_number;
 167         int rc;
 168
 169         rc = kstrtoul(buffer, 10, &pages_number);
 170         if (rc)
 171                 return rc;
 172
 173         pages_number *= 1 << (20 - PAGE_SHIFT); /* MB -> pages */
 174
 175         if (pages_number <= 0 ||
 176             pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) ||
 177             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 178                 return -ERANGE;
 179
 180         spin_lock(&cli->cl_loi_list_lock);
 181         cli->cl_dirty_max_pages = pages_number;
 182         osc_wake_cache_waiters(cli);
 183         spin_unlock(&cli->cl_loi_list_lock);
 184
 185         return count;
 186 }
 187 LUSTRE_RW_ATTR(max_dirty_mb);
 188
 189 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 190 LUSTRE_RO_ATTR(conn_uuid);
 191
 192 LUSTRE_WO_ATTR(ping);
 193
 194 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 195 {
 196         struct obd_device *dev = m->private;
 197         struct client_obd *cli = &dev->u.cli;
 198         int shift = 20 - PAGE_SHIFT;
 199
 200         seq_printf(m, "used_mb: %ld\n"
 201                    "busy_cnt: %ld\n"
 202                    "reclaim: %llu\n",
 203                    (atomic_long_read(&cli->cl_lru_in_list) +
 204                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 205                     atomic_long_read(&cli->cl_lru_busy),
 206                    cli->cl_lru_reclaim);
 207
 208         return 0;
 209 }
 210
 211 /* shrink the number of caching pages to a specific number */
 212 static ssize_t osc_cached_mb_seq_write(struct file *file,
 213                                        const char __user *buffer,
 214                                        size_t count, loff_t *off)
 215 {
 216         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 217         struct client_obd *cli = &dev->u.cli;
 218         __s64 pages_number;
 219         long rc;
 220         char kernbuf[128];
 221
 222         if (count >= sizeof(kernbuf))
 223                 return -EINVAL;
 224
 225         if (copy_from_user(kernbuf, buffer, count))
 226                 return -EFAULT;
 227         kernbuf[count] = 0;
 228
 229         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 230                   kernbuf;
 231         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 232         if (rc)
 233                 return rc;
 234
 235         pages_number >>= PAGE_SHIFT;
 236
 237         if (pages_number < 0)
 238                 return -ERANGE;
 239
 240         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 241         if (rc > 0) {
 242                 struct lu_env *env;
 243                 __u16 refcheck;
 244
 245                 env = cl_env_get(&refcheck);
 246                 if (!IS_ERR(env)) {
 247                         (void)osc_lru_shrink(env, cli, rc, true);
 248                         cl_env_put(env, &refcheck);
 249                 }
 250         }
 251
 252         return count;
 253 }
 254
 255 LPROC_SEQ_FOPS(osc_cached_mb);
 256
 257 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 258                                     struct attribute *attr,
 259                                     char *buf)
 260 {
 261         struct obd_device *dev = container_of(kobj, struct obd_device,
 262                                               obd_kset.kobj);
 263         struct client_obd *cli = &dev->u.cli;
 264         ssize_t len;
 265
 266         spin_lock(&cli->cl_loi_list_lock);
 267         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 268         spin_unlock(&cli->cl_loi_list_lock);
 269
 270         return len;
 271 }
 272 LUSTRE_RO_ATTR(cur_dirty_bytes);
 273
 274 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 275 {
 276         struct obd_device *dev = m->private;
 277         struct client_obd *cli = &dev->u.cli;
 278
 279         spin_lock(&cli->cl_loi_list_lock);
 280         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 281         spin_unlock(&cli->cl_loi_list_lock);
 282         return 0;
 283 }
 284
 285 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 286                                              const char __user *buffer,
 287                                              size_t count, loff_t *off)
 288 {
 289         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 290         struct client_obd *cli = &obd->u.cli;
 291         s64 val;
 292         int rc;
 293
 294         if (obd == NULL)
 295                 return 0;
 296
 297         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 298         if (rc)
 299                 return rc;
 300         if (val < 0)
 301                 return val;
 302
 303         /* this is only for shrinking grant */
 304         spin_lock(&cli->cl_loi_list_lock);
 305         if (val >= cli->cl_avail_grant) {
 306                 spin_unlock(&cli->cl_loi_list_lock);
 307                 return 0;
 308         }
 309
 310         spin_unlock(&cli->cl_loi_list_lock);
 311
 312         LPROCFS_CLIMP_CHECK(obd);
 313         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 314                 rc = osc_shrink_grant_to_target(cli, val);
 315         LPROCFS_CLIMP_EXIT(obd);
 316
 317         return rc ? rc : count;
 318 }
 319 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 320
 321 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 322                                          struct attribute *attr,
 323                                          char *buf)
 324 {
 325         struct obd_device *dev = container_of(kobj, struct obd_device,
 326                                               obd_kset.kobj);
 327         struct client_obd *cli = &dev->u.cli;
 328         ssize_t len;
 329
 330         spin_lock(&cli->cl_loi_list_lock);
 331         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 332         spin_unlock(&cli->cl_loi_list_lock);
 333         return len;
 334 }
 335 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 336
 337 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 338                                           struct attribute *attr,
 339                                           char *buf)
 340 {
 341         struct obd_device *obd = container_of(kobj, struct obd_device,
 342                                               obd_kset.kobj);
 343
 344         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 345 }
 346
 347 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 348                                            struct attribute *attr,
 349                                            const char *buffer,
 350                                            size_t count)
 351 {
 352         struct obd_device *obd = container_of(kobj, struct obd_device,
 353                                               obd_kset.kobj);
 354         unsigned int val;
 355         int rc;
 356
 357         rc = kstrtouint(buffer, 0, &val);
 358         if (rc)
 359                 return rc;
 360
 361         if (val == 0)
 362                 return -ERANGE;
 363
 364         obd->u.cli.cl_grant_shrink_interval = val;
 365
 366         return count;
 367 }
 368 LUSTRE_RW_ATTR(grant_shrink_interval);
 369
 370 static ssize_t checksums_show(struct kobject *kobj,
 371                               struct attribute *attr,
 372                               char *buf)
 373 {
 374         struct obd_device *obd = container_of(kobj, struct obd_device,
 375                                               obd_kset.kobj);
 376
 377         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 378 }
 379
 380 static ssize_t checksums_store(struct kobject *kobj,
 381                                struct attribute *attr,
 382                                const char *buffer,
 383                                size_t count)
 384 {
 385         struct obd_device *obd = container_of(kobj, struct obd_device,
 386                                               obd_kset.kobj);
 387         bool val;
 388         int rc;
 389
 390         rc = kstrtobool(buffer, &val);
 391         if (rc)
 392                 return rc;
 393
 394         obd->u.cli.cl_checksum = val;
 395
 396         return count;
 397 }
 398 LUSTRE_RW_ATTR(checksums);
 399
 400 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 401 {
 402         struct obd_device *obd = m->private;
 403         int i;
 404         DECLARE_CKSUM_NAME;
 405
 406         if (obd == NULL)
 407                 return 0;
 408
 409         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 410                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 411                         continue;
 412                 if (obd->u.cli.cl_cksum_type == (1 << i))
 413                         seq_printf(m, "[%s] ", cksum_name[i]);
 414                 else
 415                         seq_printf(m, "%s ", cksum_name[i]);
 416         }
 417         seq_printf(m, "\n");
 418         return 0;
 419 }
 420
 421 static ssize_t osc_checksum_type_seq_write(struct file *file,
 422                                            const char __user *buffer,
 423                                            size_t count, loff_t *off)
 424 {
 425         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 426         int i;
 427         DECLARE_CKSUM_NAME;
 428         char kernbuf[10];
 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         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 (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 444                         continue;
 445                 if (!strcmp(kernbuf, cksum_name[i])) {
 446                        obd->u.cli.cl_cksum_type = 1 << i;
 447                        return count;
 448                 }
 449         }
 450         return -EINVAL;
 451 }
 452 LPROC_SEQ_FOPS(osc_checksum_type);
 453
 454 static ssize_t resend_count_show(struct kobject *kobj,
 455                                  struct attribute *attr,
 456                                  char *buf)
 457 {
 458         struct obd_device *obd = container_of(kobj, struct obd_device,
 459                                               obd_kset.kobj);
 460
 461         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 462 }
 463
 464 static ssize_t resend_count_store(struct kobject *kobj,
 465                                   struct attribute *attr,
 466                                   const char *buffer,
 467                                   size_t count)
 468 {
 469         struct obd_device *obd = container_of(kobj, struct obd_device,
 470                                               obd_kset.kobj);
 471         unsigned int val;
 472         int rc;
 473
 474         rc = kstrtouint(buffer, 10, &val);
 475         if (rc)
 476                 return rc;
 477
 478         atomic_set(&obd->u.cli.cl_resends, val);
 479
 480         return count;
 481 }
 482 LUSTRE_RW_ATTR(resend_count);
 483
 484 static ssize_t checksum_dump_show(struct kobject *kobj,
 485                                   struct attribute *attr,
 486                                   char *buf)
 487 {
 488         struct obd_device *obd = container_of(kobj, struct obd_device,
 489                                               obd_kset.kobj);
 490
 491         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 492 }
 493
 494 static ssize_t checksum_dump_store(struct kobject *kobj,
 495                                    struct attribute *attr,
 496                                    const char *buffer,
 497                                    size_t count)
 498 {
 499         struct obd_device *obd = container_of(kobj, struct obd_device,
 500                                               obd_kset.kobj);
 501         bool val;
 502         int rc;
 503
 504         rc = kstrtobool(buffer, &val);
 505         if (rc)
 506                 return rc;
 507
 508         obd->u.cli.cl_checksum_dump = val;
 509
 510         return count;
 511 }
 512 LUSTRE_RW_ATTR(checksum_dump);
 513
 514 static ssize_t contention_seconds_show(struct kobject *kobj,
 515                                        struct attribute *attr,
 516                                        char *buf)
 517 {
 518         struct obd_device *obd = container_of(kobj, struct obd_device,
 519                                               obd_kset.kobj);
 520         struct osc_device *od = obd2osc_dev(obd);
 521
 522         return sprintf(buf, "%lld\n", od->od_contention_time);
 523 }
 524
 525 static ssize_t contention_seconds_store(struct kobject *kobj,
 526                                         struct attribute *attr,
 527                                         const char *buffer,
 528                                         size_t count)
 529 {
 530         struct obd_device *obd = container_of(kobj, struct obd_device,
 531                                               obd_kset.kobj);
 532         struct osc_device *od = obd2osc_dev(obd);
 533         unsigned int val;
 534         int rc;
 535
 536         rc = kstrtouint(buffer, 0, &val);
 537         if (rc)
 538                 return rc;
 539
 540         od->od_contention_time = val;
 541
 542         return count;
 543 }
 544 LUSTRE_RW_ATTR(contention_seconds);
 545
 546 static ssize_t lockless_truncate_show(struct kobject *kobj,
 547                                       struct attribute *attr,
 548                                       char *buf)
 549 {
 550         struct obd_device *obd = container_of(kobj, struct obd_device,
 551                                               obd_kset.kobj);
 552         struct osc_device *od = obd2osc_dev(obd);
 553
 554         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 555 }
 556
 557 static ssize_t lockless_truncate_store(struct kobject *kobj,
 558                                        struct attribute *attr,
 559                                        const char *buffer,
 560                                        size_t count)
 561 {
 562         struct obd_device *obd = container_of(kobj, struct obd_device,
 563                                               obd_kset.kobj);
 564         struct osc_device *od = obd2osc_dev(obd);
 565         bool val;
 566         int rc;
 567
 568         rc = kstrtobool(buffer, &val);
 569         if (rc)
 570                 return rc;
 571
 572         od->od_lockless_truncate = val;
 573
 574         return count;
 575 }
 576 LUSTRE_RW_ATTR(lockless_truncate);
 577
 578 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 579                                        struct attribute *attr,
 580                                        char *buf)
 581 {
 582         struct obd_device *obd = container_of(kobj, struct obd_device,
 583                                               obd_kset.kobj);
 584
 585         return sprintf(buf, "%u\n",
 586                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 587 }
 588 LUSTRE_RO_ATTR(destroys_in_flight);
 589
 590 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 591
 592 LUSTRE_RW_ATTR(short_io_bytes);
 593
 594 #ifdef CONFIG_PROC_FS
 595 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 596 {
 597         struct obd_device *dev = m->private;
 598         struct client_obd *cli = &dev->u.cli;
 599         long pages;
 600         int mb;
 601
 602         pages = atomic_long_read(&cli->cl_unstable_count);
 603         mb    = (pages * PAGE_SIZE) >> 20;
 604
 605         seq_printf(m, "unstable_pages: %20ld\n"
 606                    "unstable_mb:              %10d\n",
 607                    pages, mb);
 608         return 0;
 609 }
 610 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 611
 612 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 613                                  char *buf)
 614 {
 615         struct obd_device *obd = container_of(kobj, struct obd_device,
 616                                               obd_kset.kobj);
 617         struct client_obd *cli = &obd->u.cli;
 618         int ret;
 619
 620         LPROCFS_CLIMP_CHECK(obd);
 621         ret = sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 622         LPROCFS_CLIMP_EXIT(obd);
 623
 624         return ret;
 625 }
 626
 627 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 628                                   const char *buffer, size_t count)
 629 {
 630         struct obd_device *dev = container_of(kobj, struct obd_device,
 631                                               obd_kset.kobj);
 632         struct client_obd *cli = &dev->u.cli;
 633         struct ptlrpc_request *req;
 634         unsigned int idle_debug = 0;
 635         unsigned int val;
 636         int rc;
 637
 638         if (strncmp(buffer, "debug", 5) == 0) {
 639                 idle_debug = D_CONSOLE;
 640         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 641                 idle_debug = D_HA;
 642         } else {
 643                 rc = kstrtouint(buffer, 10, &val);
 644                 if (rc)
 645                         return rc;
 646
 647                 if (val > CONNECTION_SWITCH_MAX)
 648                         return -ERANGE;
 649         }
 650
 651         LPROCFS_CLIMP_CHECK(dev);
 652         if (idle_debug) {
 653                 cli->cl_import->imp_idle_debug = idle_debug;
 654         } else {
 655                 if (!val) {
 656                         /* initiate the connection if it's in IDLE state */
 657                         req = ptlrpc_request_alloc(cli->cl_import,
 658                                                    &RQF_OST_STATFS);
 659                         if (req != NULL)
 660                                 ptlrpc_req_finished(req);
 661                 }
 662                 cli->cl_import->imp_idle_timeout = val;
 663         }
 664         LPROCFS_CLIMP_EXIT(dev);
 665
 666         return count;
 667 }
 668 LUSTRE_RW_ATTR(idle_timeout);
 669
 670 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 671                                   const char *buffer, size_t count)
 672 {
 673         struct obd_device *dev = container_of(kobj, struct obd_device,
 674                                               obd_kset.kobj);
 675         struct client_obd *cli = &dev->u.cli;
 676         struct ptlrpc_request *req;
 677
 678         LPROCFS_CLIMP_CHECK(dev);
 679         /* to initiate the connection if it's in IDLE state */
 680         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 681         if (req)
 682                 ptlrpc_req_finished(req);
 683         ptlrpc_pinger_force(cli->cl_import);
 684         LPROCFS_CLIMP_EXIT(dev);
 685
 686         return count;
 687 }
 688 LUSTRE_WO_ATTR(idle_connect);
 689
 690 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 691                                  char *buf)
 692 {
 693         struct obd_device *obd = container_of(kobj, struct obd_device,
 694                                               obd_kset.kobj);
 695         struct client_obd *cli = &obd->u.cli;
 696         struct obd_connect_data *ocd;
 697         ssize_t len;
 698
 699         LPROCFS_CLIMP_CHECK(obd);
 700         ocd = &cli->cl_import->imp_connect_data;
 701
 702         len = snprintf(buf, PAGE_SIZE, "%d\n",
 703                        !!OCD_HAS_FLAG(ocd, GRANT_SHRINK));
 704         LPROCFS_CLIMP_EXIT(obd);
 705
 706         return len;
 707 }
 708
 709 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 710                                   const char *buffer, size_t count)
 711 {
 712         struct obd_device *dev = container_of(kobj, struct obd_device,
 713                                               obd_kset.kobj);
 714         struct client_obd *cli = &dev->u.cli;
 715         struct obd_connect_data *ocd;
 716         bool val;
 717         int rc;
 718
 719         if (dev == NULL)
 720                 return 0;
 721
 722         rc = kstrtobool(buffer, &val);
 723         if (rc)
 724                 return rc;
 725
 726         LPROCFS_CLIMP_CHECK(dev);
 727         ocd = &cli->cl_import->imp_connect_data;
 728
 729         if (!val) {
 730                 if (OCD_HAS_FLAG(ocd, GRANT_SHRINK))
 731                         ocd->ocd_connect_flags &= ~OBD_CONNECT_GRANT_SHRINK;
 732         } else {
 733                 /**
 734                  * server replied obd_connect_data is always bigger, so
 735                  * client's imp_connect_flags_orig are always supported
 736                  * by the server
 737                  */
 738                 if (!OCD_HAS_FLAG(ocd, GRANT_SHRINK) &&
 739                     cli->cl_import->imp_connect_flags_orig &
 740                     OBD_CONNECT_GRANT_SHRINK)
 741                         ocd->ocd_connect_flags |= OBD_CONNECT_GRANT_SHRINK;
 742         }
 743
 744         LPROCFS_CLIMP_EXIT(dev);
 745
 746         return count;
 747 }
 748 LUSTRE_RW_ATTR(grant_shrink);
 749
 750 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 751 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 752 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 753 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 754
 755 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 756 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 757
 758 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 759         { .name =       "connect_flags",
 760           .fops =       &osc_connect_flags_fops         },
 761         { .name =       "ost_server_uuid",
 762           .fops =       &osc_server_uuid_fops           },
 763         { .name =       "max_pages_per_rpc",
 764           .fops =       &osc_obd_max_pages_per_rpc_fops },
 765         { .name =       "osc_cached_mb",
 766           .fops =       &osc_cached_mb_fops             },
 767         { .name =       "cur_grant_bytes",
 768           .fops =       &osc_cur_grant_bytes_fops       },
 769         { .name =       "checksum_type",
 770           .fops =       &osc_checksum_type_fops         },
 771         { .name =       "timeouts",
 772           .fops =       &osc_timeouts_fops              },
 773         { .name =       "import",
 774           .fops =       &osc_import_fops                },
 775         { .name =       "state",
 776           .fops =       &osc_state_fops                 },
 777         { .name =       "pinger_recov",
 778           .fops =       &osc_pinger_recov_fops          },
 779         { .name =       "unstable_stats",
 780           .fops =       &osc_unstable_stats_fops        },
 781         { NULL }
 782 };
 783
 784 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 785 {
 786         struct timespec64 now;
 787         struct obd_device *dev = seq->private;
 788         struct client_obd *cli = &dev->u.cli;
 789         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 790         int i;
 791
 792         ktime_get_real_ts64(&now);
 793
 794         spin_lock(&cli->cl_loi_list_lock);
 795
 796         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 797                    (s64)now.tv_sec, now.tv_nsec);
 798         seq_printf(seq, "read RPCs in flight:  %d\n",
 799                    cli->cl_r_in_flight);
 800         seq_printf(seq, "write RPCs in flight: %d\n",
 801                    cli->cl_w_in_flight);
 802         seq_printf(seq, "pending write pages:  %d\n",
 803                    atomic_read(&cli->cl_pending_w_pages));
 804         seq_printf(seq, "pending read pages:   %d\n",
 805                    atomic_read(&cli->cl_pending_r_pages));
 806
 807         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 808         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 809         seq_printf(seq, "       rpcs   %% cum %%\n");
 810
 811         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 812         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 813
 814         read_cum = 0;
 815         write_cum = 0;
 816         for (i = 0; i < OBD_HIST_MAX; i++) {
 817                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 818                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 819
 820                 read_cum += r;
 821                 write_cum += w;
 822                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 823                            1 << i, r, pct(r, read_tot),
 824                            pct(read_cum, read_tot), w,
 825                            pct(w, write_tot),
 826                            pct(write_cum, write_tot));
 827                 if (read_cum == read_tot && write_cum == write_tot)
 828                         break;
 829         }
 830
 831         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 832         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 833         seq_printf(seq, "       rpcs   %% cum %%\n");
 834
 835         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 836         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 837
 838         read_cum = 0;
 839         write_cum = 0;
 840         for (i = 0; i < OBD_HIST_MAX; i++) {
 841                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 842                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 843                 read_cum += r;
 844                 write_cum += w;
 845                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 846                            i, r, pct(r, read_tot),
 847                            pct(read_cum, read_tot), w,
 848                            pct(w, write_tot),
 849                            pct(write_cum, write_tot));
 850                 if (read_cum == read_tot && write_cum == write_tot)
 851                         break;
 852         }
 853
 854         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 855         seq_printf(seq, "offset                rpcs   %% cum %% |");
 856         seq_printf(seq, "       rpcs   %% cum %%\n");
 857
 858         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 859         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 860
 861         read_cum = 0;
 862         write_cum = 0;
 863         for (i = 0; i < OBD_HIST_MAX; i++) {
 864                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 865                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 866                 read_cum += r;
 867                 write_cum += w;
 868                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 869                            (i == 0) ? 0 : 1 << (i - 1),
 870                            r, pct(r, read_tot), pct(read_cum, read_tot),
 871                            w, pct(w, write_tot), pct(write_cum, write_tot));
 872                 if (read_cum == read_tot && write_cum == write_tot)
 873                         break;
 874         }
 875
 876         spin_unlock(&cli->cl_loi_list_lock);
 877
 878         return 0;
 879 }
 880
 881 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 882                                        const char __user *buf,
 883                                        size_t len, loff_t *off)
 884 {
 885         struct seq_file *seq = file->private_data;
 886         struct obd_device *dev = seq->private;
 887         struct client_obd *cli = &dev->u.cli;
 888
 889         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 890         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 891         lprocfs_oh_clear(&cli->cl_read_page_hist);
 892         lprocfs_oh_clear(&cli->cl_write_page_hist);
 893         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 894         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 895
 896         return len;
 897 }
 898 LPROC_SEQ_FOPS(osc_rpc_stats);
 899
 900 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 901 {
 902         struct timespec64 now;
 903         struct obd_device *dev = seq->private;
 904         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 905
 906         ktime_get_real_ts64(&now);
 907
 908         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 909                    (s64)now.tv_sec, now.tv_nsec);
 910         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 911                    stats->os_lockless_writes);
 912         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 913                    stats->os_lockless_reads);
 914         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 915                    stats->os_lockless_truncates);
 916         return 0;
 917 }
 918
 919 static ssize_t osc_stats_seq_write(struct file *file,
 920                                    const char __user *buf,
 921                                    size_t len, loff_t *off)
 922 {
 923         struct seq_file *seq = file->private_data;
 924         struct obd_device *dev = seq->private;
 925         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 926
 927         memset(stats, 0, sizeof(*stats));
 928         return len;
 929 }
 930
 931 LPROC_SEQ_FOPS(osc_stats);
 932
 933 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 934 {
 935         int rc;
 936
 937         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 938                                 &osc_stats_fops, dev);
 939         if (rc == 0)
 940                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 941                                             &osc_rpc_stats_fops, dev);
 942
 943         return rc;
 944 }
 945 #endif /* CONFIG_PROC_FS */
 946
 947 static struct attribute *osc_attrs[] = {
 948         &lustre_attr_active.attr,
 949         &lustre_attr_checksums.attr,
 950         &lustre_attr_checksum_dump.attr,
 951         &lustre_attr_contention_seconds.attr,
 952         &lustre_attr_cur_dirty_bytes.attr,
 953         &lustre_attr_cur_lost_grant_bytes.attr,
 954         &lustre_attr_destroys_in_flight.attr,
 955         &lustre_attr_grant_shrink_interval.attr,
 956         &lustre_attr_lockless_truncate.attr,
 957         &lustre_attr_max_dirty_mb.attr,
 958         &lustre_attr_max_rpcs_in_flight.attr,
 959         &lustre_attr_short_io_bytes.attr,
 960         &lustre_attr_resend_count.attr,
 961         &lustre_attr_ost_conn_uuid.attr,
 962         &lustre_attr_conn_uuid.attr,
 963         &lustre_attr_ping.attr,
 964         &lustre_attr_idle_timeout.attr,
 965         &lustre_attr_idle_connect.attr,
 966         &lustre_attr_grant_shrink.attr,
 967         NULL,
 968 };
 969
 970 int osc_tunables_init(struct obd_device *obd)
 971 {
 972 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 973         struct obd_type *type;
 974 #endif
 975         int rc;
 976
 977         obd->obd_vars = lprocfs_osc_obd_vars;
 978 #if defined(CONFIG_PROC_FS) && defined(HAVE_SERVER_SUPPORT)
 979         /* If this is true then both client (osc) and server (osp) are on the
 980          * same node. The osp layer if loaded first will register the osc proc
 981          * directory. In that case this obd_device will be attached its proc
 982          * tree to type->typ_procsym instead of obd->obd_type->typ_procroot.
 983          */
 984         type = class_search_type(LUSTRE_OSP_NAME);
 985         if (type && type->typ_procsym) {
 986                 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
 987                                                        type->typ_procsym,
 988                                                        obd->obd_vars, obd);
 989                 if (IS_ERR(obd->obd_proc_entry)) {
 990                         rc = PTR_ERR(obd->obd_proc_entry);
 991                         CERROR("error %d setting up lprocfs for %s\n", rc,
 992                                obd->obd_name);
 993                         obd->obd_proc_entry = NULL;
 994                 }
 995         }
 996 #endif
 997         obd->obd_ktype.default_attrs = osc_attrs;
 998         rc = lprocfs_obd_setup(obd, false);
 999         if (rc)
1000                 return rc;
1001 #ifdef CONFIG_PROC_FS
1002         /* If the basic OSC proc tree construction succeeded then
1003          * lets do the rest.
1004          */
1005         rc = lprocfs_osc_attach_seqstat(obd);
1006         if (rc)
1007                 goto obd_cleanup;
1008
1009 #endif /* CONFIG_PROC_FS */
1010         rc = sptlrpc_lprocfs_cliobd_attach(obd);
1011         if (rc)
1012                 goto obd_cleanup;
1013
1014         ptlrpc_lprocfs_register_obd(obd);
1015 obd_cleanup:
1016         if (rc)
1017                 lprocfs_obd_cleanup(obd);
1018         return rc;
1019 }