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 #ifdef CONFIG_PROC_FS
  45 static int osc_active_seq_show(struct seq_file *m, void *v)
  46 {
  47         struct obd_device *dev = m->private;
  48
  49         LPROCFS_CLIMP_CHECK(dev);
  50         seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  51         LPROCFS_CLIMP_EXIT(dev);
  52         return 0;
  53 }
  54
  55 static ssize_t osc_active_seq_write(struct file *file,
  56                                     const char __user *buffer,
  57                                     size_t count, loff_t *off)
  58 {
  59         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  60         int rc;
  61         __s64 val;
  62
  63         rc = lprocfs_str_to_s64(buffer, count, &val);
  64         if (rc)
  65                 return rc;
  66         if (val < 0 || val > 1)
  67                 return -ERANGE;
  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 %d: ignoring repeat request\n",
  74                         (int)val);
  75
  76         return count;
  77 }
  78 LPROC_SEQ_FOPS(osc_active);
  79
  80 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  81 {
  82         struct obd_device *dev = m->private;
  83         struct client_obd *cli = &dev->u.cli;
  84
  85         spin_lock(&cli->cl_loi_list_lock);
  86         seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  87         spin_unlock(&cli->cl_loi_list_lock);
  88         return 0;
  89 }
  90
  91 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  92                                                 const char __user *buffer,
  93                                                 size_t count, loff_t *off)
  94 {
  95         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  96         struct client_obd *cli = &dev->u.cli;
  97         int rc;
  98         int adding, added, req_count;
  99         __s64 val;
 100
 101         rc = lprocfs_str_to_s64(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104         if (val < 1 || val > OSC_MAX_RIF_MAX)
 105                 return -ERANGE;
 106
 107         LPROCFS_CLIMP_CHECK(dev);
 108
 109         adding = (int)val - cli->cl_max_rpcs_in_flight;
 110         req_count = atomic_read(&osc_pool_req_count);
 111         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 112                 /*
 113                  * There might be some race which will cause over-limit
 114                  * allocation, but it is fine.
 115                  */
 116                 if (req_count + adding > osc_reqpool_maxreqcount)
 117                         adding = osc_reqpool_maxreqcount - req_count;
 118
 119                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 120                 atomic_add(added, &osc_pool_req_count);
 121         }
 122
 123         spin_lock(&cli->cl_loi_list_lock);
 124         cli->cl_max_rpcs_in_flight = val;
 125         client_adjust_max_dirty(cli);
 126         spin_unlock(&cli->cl_loi_list_lock);
 127
 128         LPROCFS_CLIMP_EXIT(dev);
 129         return count;
 130 }
 131 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 132
 133 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 134 {
 135         struct obd_device *dev = m->private;
 136         struct client_obd *cli = &dev->u.cli;
 137         long val;
 138         int mult;
 139
 140         spin_lock(&cli->cl_loi_list_lock);
 141         val = cli->cl_dirty_max_pages;
 142         spin_unlock(&cli->cl_loi_list_lock);
 143
 144         mult = 1 << (20 - PAGE_SHIFT);
 145         return lprocfs_seq_read_frac_helper(m, val, mult);
 146 }
 147
 148 static ssize_t osc_max_dirty_mb_seq_write(struct file *file,
 149                                           const char __user *buffer,
 150                                           size_t count, loff_t *off)
 151 {
 152         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 153         struct client_obd *cli = &dev->u.cli;
 154         int rc;
 155         __s64 pages_number;
 156
 157         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 158         if (rc)
 159                 return rc;
 160
 161         pages_number >>= PAGE_SHIFT;
 162
 163         if (pages_number <= 0 ||
 164             pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) ||
 165             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 166                 return -ERANGE;
 167
 168         spin_lock(&cli->cl_loi_list_lock);
 169         cli->cl_dirty_max_pages = pages_number;
 170         osc_wake_cache_waiters(cli);
 171         spin_unlock(&cli->cl_loi_list_lock);
 172
 173         return count;
 174 }
 175 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 176
 177 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 178 {
 179         struct obd_device *dev = m->private;
 180         struct client_obd *cli = &dev->u.cli;
 181         int shift = 20 - PAGE_SHIFT;
 182
 183         seq_printf(m, "used_mb: %ld\n"
 184                    "busy_cnt: %ld\n"
 185                    "reclaim: %llu\n",
 186                    (atomic_long_read(&cli->cl_lru_in_list) +
 187                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 188                     atomic_long_read(&cli->cl_lru_busy),
 189                    cli->cl_lru_reclaim);
 190
 191         return 0;
 192 }
 193
 194 /* shrink the number of caching pages to a specific number */
 195 static ssize_t
 196 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 197                         size_t count, loff_t *off)
 198 {
 199         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 200         struct client_obd *cli = &dev->u.cli;
 201         __s64 pages_number;
 202         long rc;
 203         char kernbuf[128];
 204
 205         if (count >= sizeof(kernbuf))
 206                 return -EINVAL;
 207
 208         if (copy_from_user(kernbuf, buffer, count))
 209                 return -EFAULT;
 210         kernbuf[count] = 0;
 211
 212         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 213                   kernbuf;
 214         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 215         if (rc)
 216                 return rc;
 217
 218         pages_number >>= PAGE_SHIFT;
 219
 220         if (pages_number < 0)
 221                 return -ERANGE;
 222
 223         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 224         if (rc > 0) {
 225                 struct lu_env *env;
 226                 __u16 refcheck;
 227
 228                 env = cl_env_get(&refcheck);
 229                 if (!IS_ERR(env)) {
 230                         (void)osc_lru_shrink(env, cli, rc, true);
 231                         cl_env_put(env, &refcheck);
 232                 }
 233         }
 234
 235         return count;
 236 }
 237 LPROC_SEQ_FOPS(osc_cached_mb);
 238
 239 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 240 {
 241         struct obd_device *dev = m->private;
 242         struct client_obd *cli = &dev->u.cli;
 243
 244         spin_lock(&cli->cl_loi_list_lock);
 245         seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 246         spin_unlock(&cli->cl_loi_list_lock);
 247         return 0;
 248 }
 249 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 250
 251 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 252 {
 253         struct obd_device *dev = m->private;
 254         struct client_obd *cli = &dev->u.cli;
 255
 256         spin_lock(&cli->cl_loi_list_lock);
 257         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 258         spin_unlock(&cli->cl_loi_list_lock);
 259         return 0;
 260 }
 261
 262 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 263                                              const char __user *buffer,
 264                                              size_t count, loff_t *off)
 265 {
 266         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 267         struct client_obd *cli = &obd->u.cli;
 268         int                rc;
 269         __s64              val;
 270
 271         if (obd == NULL)
 272                 return 0;
 273
 274         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 275         if (rc)
 276                 return rc;
 277         if (val < 0)
 278                 return -ERANGE;
 279
 280         /* this is only for shrinking grant */
 281         spin_lock(&cli->cl_loi_list_lock);
 282         if (val >= cli->cl_avail_grant) {
 283                 spin_unlock(&cli->cl_loi_list_lock);
 284                 return 0;
 285         }
 286
 287         spin_unlock(&cli->cl_loi_list_lock);
 288
 289         LPROCFS_CLIMP_CHECK(obd);
 290         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 291                 rc = osc_shrink_grant_to_target(cli, val);
 292         LPROCFS_CLIMP_EXIT(obd);
 293         if (rc)
 294                 return rc;
 295         return count;
 296 }
 297 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 298
 299 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 300 {
 301         struct obd_device *dev = m->private;
 302         struct client_obd *cli = &dev->u.cli;
 303
 304         spin_lock(&cli->cl_loi_list_lock);
 305         seq_printf(m, "%lu\n", cli->cl_lost_grant);
 306         spin_unlock(&cli->cl_loi_list_lock);
 307         return 0;
 308 }
 309 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 310
 311 static int osc_cur_dirty_grant_bytes_seq_show(struct seq_file *m, void *v)
 312 {
 313         struct obd_device *dev = m->private;
 314         struct client_obd *cli = &dev->u.cli;
 315
 316         spin_lock(&cli->cl_loi_list_lock);
 317         seq_printf(m, "%lu\n", cli->cl_dirty_grant);
 318         spin_unlock(&cli->cl_loi_list_lock);
 319         return 0;
 320 }
 321 LPROC_SEQ_FOPS_RO(osc_cur_dirty_grant_bytes);
 322
 323 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 324 {
 325         struct obd_device *obd = m->private;
 326
 327         if (obd == NULL)
 328                 return 0;
 329         seq_printf(m, "%lld\n",
 330                    obd->u.cli.cl_grant_shrink_interval);
 331         return 0;
 332 }
 333
 334 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 335                                                    const char __user *buffer,
 336                                                    size_t count, loff_t *off)
 337 {
 338         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 339         int rc;
 340         __s64 val;
 341
 342         if (obd == NULL)
 343                 return 0;
 344
 345         rc = lprocfs_str_to_s64(buffer, count, &val);
 346         if (rc)
 347                 return rc;
 348
 349         if (val <= 0 || val > INT_MAX)
 350                 return -ERANGE;
 351
 352         obd->u.cli.cl_grant_shrink_interval = val;
 353
 354         return count;
 355 }
 356 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 357
 358 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 359 {
 360         struct obd_device *obd = m->private;
 361
 362         if (obd == NULL)
 363                 return 0;
 364
 365         seq_printf(m, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 366         return 0;
 367 }
 368
 369 static ssize_t osc_checksum_seq_write(struct file *file,
 370                                       const char __user *buffer,
 371                                       size_t count, loff_t *off)
 372 {
 373         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 374         int rc;
 375         __s64 val;
 376
 377         if (obd == NULL)
 378                 return 0;
 379
 380         rc = lprocfs_str_to_s64(buffer, count, &val);
 381         if (rc)
 382                 return rc;
 383
 384         obd->u.cli.cl_checksum = !!val;
 385
 386         return count;
 387 }
 388 LPROC_SEQ_FOPS(osc_checksum);
 389
 390 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 391 {
 392         struct obd_device *obd = m->private;
 393         int i;
 394         DECLARE_CKSUM_NAME;
 395
 396         if (obd == NULL)
 397                 return 0;
 398
 399         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 400                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 401                         continue;
 402                 if (obd->u.cli.cl_cksum_type == (1 << i))
 403                         seq_printf(m, "[%s] ", cksum_name[i]);
 404                 else
 405                         seq_printf(m, "%s ", cksum_name[i]);
 406         }
 407         seq_printf(m, "\n");
 408         return 0;
 409 }
 410
 411 static ssize_t osc_checksum_type_seq_write(struct file *file,
 412                                            const char __user *buffer,
 413                                            size_t count, loff_t *off)
 414 {
 415         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 416         int i;
 417         DECLARE_CKSUM_NAME;
 418         char kernbuf[10];
 419
 420         if (obd == NULL)
 421                 return 0;
 422
 423         if (count > sizeof(kernbuf) - 1)
 424                 return -EINVAL;
 425         if (copy_from_user(kernbuf, buffer, count))
 426                 return -EFAULT;
 427         if (count > 0 && kernbuf[count - 1] == '\n')
 428                 kernbuf[count - 1] = '\0';
 429         else
 430                 kernbuf[count] = '\0';
 431
 432         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 433                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 434                         continue;
 435                 if (!strcmp(kernbuf, cksum_name[i])) {
 436                        obd->u.cli.cl_cksum_type = 1 << i;
 437                        return count;
 438                 }
 439         }
 440         return -EINVAL;
 441 }
 442 LPROC_SEQ_FOPS(osc_checksum_type);
 443
 444 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 445 {
 446         struct obd_device *obd = m->private;
 447
 448         seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 449         return 0;
 450 }
 451
 452 static ssize_t osc_resend_count_seq_write(struct file *file,
 453                                           const char __user *buffer,
 454                                           size_t count, loff_t *off)
 455 {
 456         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 457         int rc;
 458         __s64 val;
 459
 460         rc = lprocfs_str_to_s64(buffer, count, &val);
 461         if (rc)
 462                 return rc;
 463
 464         if (val < 0 || val > INT_MAX)
 465                 return -EINVAL;
 466
 467         atomic_set(&obd->u.cli.cl_resends, val);
 468
 469         return count;
 470 }
 471 LPROC_SEQ_FOPS(osc_resend_count);
 472
 473 static int osc_checksum_dump_seq_show(struct seq_file *m, void *v)
 474 {
 475         struct obd_device *obd = m->private;
 476
 477         if (obd == NULL)
 478                 return 0;
 479
 480         seq_printf(m, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 481         return 0;
 482 }
 483
 484 static ssize_t osc_checksum_dump_seq_write(struct file *file,
 485                                            const char __user *buffer,
 486                                            size_t count, loff_t *off)
 487 {
 488         struct obd_device *obd;
 489         int rc;
 490         __s64 val;
 491
 492         obd = ((struct seq_file *)file->private_data)->private;
 493         if (obd == NULL)
 494                 return 0;
 495
 496         rc = lprocfs_str_to_s64(buffer, count, &val);
 497         if (rc)
 498                 return rc;
 499
 500         obd->u.cli.cl_checksum_dump = (val ? 1 : 0);
 501
 502         return count;
 503 }
 504 LPROC_SEQ_FOPS(osc_checksum_dump);
 505
 506 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 507 {
 508         struct obd_device *obd = m->private;
 509         struct osc_device *od  = obd2osc_dev(obd);
 510
 511         seq_printf(m, "%u\n", od->od_contention_time);
 512         return 0;
 513 }
 514
 515 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 516                                                 const char __user *buffer,
 517                                                 size_t count, loff_t *off)
 518 {
 519         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 520         struct osc_device *od  = obd2osc_dev(obd);
 521         int rc;
 522         __s64 val;
 523
 524         rc = lprocfs_str_to_s64(buffer, count, &val);
 525         if (rc)
 526                 return rc;
 527         if (val < 0 || val > INT_MAX)
 528                 return -ERANGE;
 529
 530         od->od_contention_time = val;
 531
 532         return count;
 533 }
 534 LPROC_SEQ_FOPS(osc_contention_seconds);
 535
 536 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 537 {
 538         struct obd_device *obd = m->private;
 539         struct osc_device *od  = obd2osc_dev(obd);
 540
 541         seq_printf(m, "%u\n", od->od_lockless_truncate);
 542         return 0;
 543 }
 544
 545 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 546                                                const char __user *buffer,
 547                                     size_t count, loff_t *off)
 548 {
 549         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 550         struct osc_device *od  = obd2osc_dev(obd);
 551         int rc;
 552         __s64 val;
 553
 554         rc = lprocfs_str_to_s64(buffer, count, &val);
 555         if (rc)
 556                 return rc;
 557         if (val < 0)
 558                 return -ERANGE;
 559
 560         od->od_lockless_truncate = !!val;
 561
 562         return count;
 563 }
 564 LPROC_SEQ_FOPS(osc_lockless_truncate);
 565
 566 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 567 {
 568         struct obd_device *obd = m->private;
 569         seq_printf(m, "%u\n",
 570                    atomic_read(&obd->u.cli.cl_destroy_in_flight));
 571         return 0;
 572 }
 573 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 574
 575 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 576
 577 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_short_io_bytes);
 578
 579 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 580 {
 581         struct obd_device *dev = m->private;
 582         struct client_obd *cli = &dev->u.cli;
 583         long pages;
 584         int mb;
 585
 586         pages = atomic_long_read(&cli->cl_unstable_count);
 587         mb    = (pages * PAGE_SIZE) >> 20;
 588
 589         seq_printf(m, "unstable_pages: %20ld\n"
 590                    "unstable_mb:              %10d\n",
 591                    pages, mb);
 592         return 0;
 593 }
 594 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 595
 596 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 597 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 598 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 599 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 600 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 601
 602 LPROC_SEQ_FOPS_WR_ONLY(osc, ping);
 603
 604 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 605 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 606
 607 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 608         { .name =       "ping",
 609           .fops =       &osc_ping_fops,
 610           .proc_mode =  0222                            },
 611         { .name =       "connect_flags",
 612           .fops =       &osc_connect_flags_fops         },
 613         { .name =       "ost_server_uuid",
 614           .fops =       &osc_server_uuid_fops           },
 615         { .name =       "ost_conn_uuid",
 616           .fops =       &osc_conn_uuid_fops             },
 617         { .name =       "active",
 618           .fops =       &osc_active_fops                },
 619         { .name =       "max_pages_per_rpc",
 620           .fops =       &osc_obd_max_pages_per_rpc_fops },
 621         { .name =       "short_io_bytes",
 622           .fops =       &osc_obd_short_io_bytes_fops    },
 623         { .name =       "max_rpcs_in_flight",
 624           .fops =       &osc_max_rpcs_in_flight_fops    },
 625         { .name =       "destroys_in_flight",
 626           .fops =       &osc_destroys_in_flight_fops    },
 627         { .name =       "max_dirty_mb",
 628           .fops =       &osc_max_dirty_mb_fops          },
 629         { .name =       "osc_cached_mb",
 630           .fops =       &osc_cached_mb_fops             },
 631         { .name =       "cur_dirty_bytes",
 632           .fops =       &osc_cur_dirty_bytes_fops       },
 633         { .name =       "cur_grant_bytes",
 634           .fops =       &osc_cur_grant_bytes_fops       },
 635         { .name =       "cur_lost_grant_bytes",
 636           .fops =       &osc_cur_lost_grant_bytes_fops  },
 637         { .name =       "cur_dirty_grant_bytes",
 638           .fops =       &osc_cur_dirty_grant_bytes_fops },
 639         { .name =       "grant_shrink_interval",
 640           .fops =       &osc_grant_shrink_interval_fops },
 641         { .name =       "checksums",
 642           .fops =       &osc_checksum_fops              },
 643         { .name =       "checksum_type",
 644           .fops =       &osc_checksum_type_fops         },
 645         { .name =       "checksum_dump",
 646           .fops =       &osc_checksum_dump_fops         },
 647         { .name =       "resend_count",
 648           .fops =       &osc_resend_count_fops          },
 649         { .name =       "timeouts",
 650           .fops =       &osc_timeouts_fops              },
 651         { .name =       "contention_seconds",
 652           .fops =       &osc_contention_seconds_fops    },
 653         { .name =       "lockless_truncate",
 654           .fops =       &osc_lockless_truncate_fops     },
 655         { .name =       "import",
 656           .fops =       &osc_import_fops                },
 657         { .name =       "state",
 658           .fops =       &osc_state_fops                 },
 659         { .name =       "pinger_recov",
 660           .fops =       &osc_pinger_recov_fops          },
 661         { .name =       "unstable_stats",
 662           .fops =       &osc_unstable_stats_fops        },
 663         { NULL }
 664 };
 665
 666 #define pct(a,b) (b ? a * 100 / b : 0)
 667
 668 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 669 {
 670         struct timespec64 now;
 671         struct obd_device *dev = seq->private;
 672         struct client_obd *cli = &dev->u.cli;
 673         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 674         int i;
 675
 676         ktime_get_real_ts64(&now);
 677
 678         spin_lock(&cli->cl_loi_list_lock);
 679
 680         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 681                    (s64)now.tv_sec, now.tv_nsec);
 682         seq_printf(seq, "read RPCs in flight:  %d\n",
 683                    cli->cl_r_in_flight);
 684         seq_printf(seq, "write RPCs in flight: %d\n",
 685                    cli->cl_w_in_flight);
 686         seq_printf(seq, "pending write pages:  %d\n",
 687                    atomic_read(&cli->cl_pending_w_pages));
 688         seq_printf(seq, "pending read pages:   %d\n",
 689                    atomic_read(&cli->cl_pending_r_pages));
 690
 691         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 692         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 693         seq_printf(seq, "       rpcs   %% cum %%\n");
 694
 695         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 696         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 697
 698         read_cum = 0;
 699         write_cum = 0;
 700         for (i = 0; i < OBD_HIST_MAX; i++) {
 701                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 702                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 703
 704                 read_cum += r;
 705                 write_cum += w;
 706                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 707                            1 << i, r, pct(r, read_tot),
 708                            pct(read_cum, read_tot), w,
 709                            pct(w, write_tot),
 710                            pct(write_cum, write_tot));
 711                 if (read_cum == read_tot && write_cum == write_tot)
 712                         break;
 713         }
 714
 715         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 716         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 717         seq_printf(seq, "       rpcs   %% cum %%\n");
 718
 719         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 720         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 721
 722         read_cum = 0;
 723         write_cum = 0;
 724         for (i = 0; i < OBD_HIST_MAX; i++) {
 725                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 726                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 727                 read_cum += r;
 728                 write_cum += w;
 729                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 730                            i, r, pct(r, read_tot),
 731                            pct(read_cum, read_tot), w,
 732                            pct(w, write_tot),
 733                            pct(write_cum, write_tot));
 734                 if (read_cum == read_tot && write_cum == write_tot)
 735                         break;
 736         }
 737
 738         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 739         seq_printf(seq, "offset                rpcs   %% cum %% |");
 740         seq_printf(seq, "       rpcs   %% cum %%\n");
 741
 742         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 743         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 744
 745         read_cum = 0;
 746         write_cum = 0;
 747         for (i = 0; i < OBD_HIST_MAX; i++) {
 748                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 749                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 750                 read_cum += r;
 751                 write_cum += w;
 752                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 753                            (i == 0) ? 0 : 1 << (i - 1),
 754                            r, pct(r, read_tot), pct(read_cum, read_tot),
 755                            w, pct(w, write_tot), pct(write_cum, write_tot));
 756                 if (read_cum == read_tot && write_cum == write_tot)
 757                         break;
 758         }
 759
 760         spin_unlock(&cli->cl_loi_list_lock);
 761
 762         return 0;
 763 }
 764 #undef pct
 765
 766 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 767                                        const char __user *buf,
 768                                        size_t len, loff_t *off)
 769 {
 770         struct seq_file *seq = file->private_data;
 771         struct obd_device *dev = seq->private;
 772         struct client_obd *cli = &dev->u.cli;
 773
 774         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 775         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 776         lprocfs_oh_clear(&cli->cl_read_page_hist);
 777         lprocfs_oh_clear(&cli->cl_write_page_hist);
 778         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 779         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 780
 781         return len;
 782 }
 783 LPROC_SEQ_FOPS(osc_rpc_stats);
 784
 785 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 786 {
 787         struct timespec64 now;
 788         struct obd_device *dev = seq->private;
 789         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 790
 791         ktime_get_real_ts64(&now);
 792
 793         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 794                    (s64)now.tv_sec, now.tv_nsec);
 795         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 796                    stats->os_lockless_writes);
 797         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 798                    stats->os_lockless_reads);
 799         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 800                    stats->os_lockless_truncates);
 801         return 0;
 802 }
 803
 804 static ssize_t osc_stats_seq_write(struct file *file,
 805                                    const char __user *buf,
 806                                    size_t len, loff_t *off)
 807 {
 808         struct seq_file *seq = file->private_data;
 809         struct obd_device *dev = seq->private;
 810         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 811
 812         memset(stats, 0, sizeof(*stats));
 813         return len;
 814 }
 815
 816 LPROC_SEQ_FOPS(osc_stats);
 817
 818 int lproc_osc_attach_seqstat(struct obd_device *dev)
 819 {
 820         int rc;
 821
 822         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 823                                 &osc_stats_fops, dev);
 824         if (rc == 0)
 825                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 826                                             &osc_rpc_stats_fops, dev);
 827
 828         return rc;
 829 }
 830 #endif /* CONFIG_PROC_FS */