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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2015, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <linux/version.h>
  39 #include <asm/statfs.h>
  40 #include <obd_cksum.h>
  41 #include <obd_class.h>
  42 #include <lprocfs_status.h>
  43 #include <linux/seq_file.h>
  44 #include "osc_internal.h"
  45
  46 #ifdef CONFIG_PROC_FS
  47 static int osc_active_seq_show(struct seq_file *m, void *v)
  48 {
  49         struct obd_device *dev = m->private;
  50         int rc;
  51
  52         LPROCFS_CLIMP_CHECK(dev);
  53         rc = seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  54         LPROCFS_CLIMP_EXIT(dev);
  55         return rc;
  56 }
  57
  58 static ssize_t osc_active_seq_write(struct file *file,
  59                                     const char __user *buffer,
  60                                     size_t count, loff_t *off)
  61 {
  62         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  63         int val, rc;
  64
  65         rc = lprocfs_write_helper(buffer, count, &val);
  66         if (rc)
  67                 return rc;
  68         if (val < 0 || val > 1)
  69                 return -ERANGE;
  70
  71         /* opposite senses */
  72         if (dev->u.cli.cl_import->imp_deactive == val)
  73                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  74         else
  75                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  76
  77         return count;
  78 }
  79 LPROC_SEQ_FOPS(osc_active);
  80
  81 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  82 {
  83         struct obd_device *dev = m->private;
  84         struct client_obd *cli = &dev->u.cli;
  85         int rc;
  86
  87         spin_lock(&cli->cl_loi_list_lock);
  88         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  89         spin_unlock(&cli->cl_loi_list_lock);
  90         return rc;
  91 }
  92
  93 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  94                                                 const char __user *buffer,
  95                                                 size_t count, loff_t *off)
  96 {
  97         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  98         struct client_obd *cli = &dev->u.cli;
  99         int val, rc;
 100         int adding, added, req_count;
 101
 102         rc = lprocfs_write_helper(buffer, count, &val);
 103         if (rc)
 104                 return rc;
 105
 106         if (val < 1 || val > OSC_MAX_RIF_MAX)
 107                 return -ERANGE;
 108
 109         LPROCFS_CLIMP_CHECK(dev);
 110
 111         adding = val - cli->cl_max_rpcs_in_flight;
 112         req_count = atomic_read(&osc_pool_req_count);
 113         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 114                 /*
 115                  * There might be some race which will cause over-limit
 116                  * allocation, but it is fine.
 117                  */
 118                 if (req_count + adding > osc_reqpool_maxreqcount)
 119                         adding = osc_reqpool_maxreqcount - req_count;
 120
 121                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 122                 atomic_add(added, &osc_pool_req_count);
 123         }
 124
 125         spin_lock(&cli->cl_loi_list_lock);
 126         cli->cl_max_rpcs_in_flight = val;
 127         client_adjust_max_dirty(cli);
 128         spin_unlock(&cli->cl_loi_list_lock);
 129
 130         LPROCFS_CLIMP_EXIT(dev);
 131         return count;
 132 }
 133 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 134
 135 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 136 {
 137         struct obd_device *dev = m->private;
 138         struct client_obd *cli = &dev->u.cli;
 139         long val;
 140         int mult;
 141
 142         spin_lock(&cli->cl_loi_list_lock);
 143         val = cli->cl_dirty_max_pages;
 144         spin_unlock(&cli->cl_loi_list_lock);
 145
 146         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 147         return lprocfs_seq_read_frac_helper(m, val, mult);
 148 }
 149
 150 static ssize_t osc_max_dirty_mb_seq_write(struct file *file,
 151                                           const char __user *buffer,
 152                                           size_t count, loff_t *off)
 153 {
 154         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 155         struct client_obd *cli = &dev->u.cli;
 156         int pages_number, mult, rc;
 157
 158         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 159         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 160         if (rc)
 161                 return rc;
 162
 163         if (pages_number <= 0 ||
 164             pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_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_CACHE_SHIFT;
 182         int rc;
 183
 184         rc = seq_printf(m,
 185                       "used_mb: %ld\n"
 186                       "busy_cnt: %ld\n"
 187                       "reclaim: "LPU64"\n",
 188                       (atomic_long_read(&cli->cl_lru_in_list) +
 189                        atomic_long_read(&cli->cl_lru_busy)) >> shift,
 190                       atomic_long_read(&cli->cl_lru_busy),
 191                       cli->cl_lru_reclaim);
 192
 193         return rc;
 194 }
 195
 196 /* shrink the number of caching pages to a specific number */
 197 static ssize_t
 198 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 199                         size_t count, loff_t *off)
 200 {
 201         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 202         struct client_obd *cli = &dev->u.cli;
 203         __u64 val;
 204         long pages_number;
 205         long rc;
 206         int mult;
 207         char kernbuf[128];
 208
 209         if (count >= sizeof(kernbuf))
 210                 return -EINVAL;
 211
 212         if (copy_from_user(kernbuf, buffer, count))
 213                 return -EFAULT;
 214         kernbuf[count] = 0;
 215
 216         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 217         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 218                   kernbuf;
 219         rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
 220
 221         if (rc)
 222                 return rc;
 223
 224         if (val > LONG_MAX)
 225                 return -ERANGE;
 226         pages_number = (long)val;
 227
 228         if (pages_number < 0)
 229                 return -ERANGE;
 230
 231         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 232         if (rc > 0) {
 233                 struct lu_env *env;
 234                 int refcheck;
 235
 236                 env = cl_env_get(&refcheck);
 237                 if (!IS_ERR(env)) {
 238                         (void)osc_lru_shrink(env, cli, rc, true);
 239                         cl_env_put(env, &refcheck);
 240                 }
 241         }
 242
 243         return count;
 244 }
 245 LPROC_SEQ_FOPS(osc_cached_mb);
 246
 247 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 248 {
 249         struct obd_device *dev = m->private;
 250         struct client_obd *cli = &dev->u.cli;
 251         int rc;
 252
 253         spin_lock(&cli->cl_loi_list_lock);
 254         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 255         spin_unlock(&cli->cl_loi_list_lock);
 256         return rc;
 257 }
 258 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 259
 260 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 261 {
 262         struct obd_device *dev = m->private;
 263         struct client_obd *cli = &dev->u.cli;
 264         int rc;
 265
 266         spin_lock(&cli->cl_loi_list_lock);
 267         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 268         spin_unlock(&cli->cl_loi_list_lock);
 269         return rc;
 270 }
 271
 272 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 273                                              const char __user *buffer,
 274                                              size_t count, loff_t *off)
 275 {
 276         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 277         struct client_obd *cli = &obd->u.cli;
 278         int                rc;
 279         __u64              val;
 280
 281         if (obd == NULL)
 282                 return 0;
 283
 284         rc = lprocfs_write_u64_helper(buffer, count, &val);
 285         if (rc)
 286                 return rc;
 287
 288         /* this is only for shrinking grant */
 289         spin_lock(&cli->cl_loi_list_lock);
 290         if (val >= cli->cl_avail_grant) {
 291                 spin_unlock(&cli->cl_loi_list_lock);
 292                 return 0;
 293         }
 294
 295         spin_unlock(&cli->cl_loi_list_lock);
 296
 297         LPROCFS_CLIMP_CHECK(obd);
 298         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 299                 rc = osc_shrink_grant_to_target(cli, val);
 300         LPROCFS_CLIMP_EXIT(obd);
 301         if (rc)
 302                 return rc;
 303         return count;
 304 }
 305 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 306
 307 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 308 {
 309         struct obd_device *dev = m->private;
 310         struct client_obd *cli = &dev->u.cli;
 311         int rc;
 312
 313         spin_lock(&cli->cl_loi_list_lock);
 314         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 315         spin_unlock(&cli->cl_loi_list_lock);
 316         return rc;
 317 }
 318 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 319
 320 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 321 {
 322         struct obd_device *obd = m->private;
 323
 324         if (obd == NULL)
 325                 return 0;
 326         return seq_printf(m, "%d\n",
 327                           obd->u.cli.cl_grant_shrink_interval);
 328 }
 329
 330 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 331                                                    const char __user *buffer,
 332                                                    size_t count, loff_t *off)
 333 {
 334         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 335         int val, rc;
 336
 337         if (obd == NULL)
 338                 return 0;
 339
 340         rc = lprocfs_write_helper(buffer, count, &val);
 341         if (rc)
 342                 return rc;
 343
 344         if (val <= 0)
 345                 return -ERANGE;
 346
 347         obd->u.cli.cl_grant_shrink_interval = val;
 348
 349         return count;
 350 }
 351 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 352
 353 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 354 {
 355         struct obd_device *obd = m->private;
 356
 357         if (obd == NULL)
 358                 return 0;
 359
 360         return seq_printf(m, "%d\n",
 361                           obd->u.cli.cl_checksum ? 1 : 0);
 362 }
 363
 364 static ssize_t osc_checksum_seq_write(struct file *file,
 365                                       const char __user *buffer,
 366                                       size_t count, loff_t *off)
 367 {
 368         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 369         int val, rc;
 370
 371         if (obd == NULL)
 372                 return 0;
 373
 374         rc = lprocfs_write_helper(buffer, count, &val);
 375         if (rc)
 376                 return rc;
 377
 378         obd->u.cli.cl_checksum = (val ? 1 : 0);
 379
 380         return count;
 381 }
 382 LPROC_SEQ_FOPS(osc_checksum);
 383
 384 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 385 {
 386         struct obd_device *obd = m->private;
 387         int i;
 388         DECLARE_CKSUM_NAME;
 389
 390         if (obd == NULL)
 391                 return 0;
 392
 393         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 394                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 395                         continue;
 396                 if (obd->u.cli.cl_cksum_type == (1 << i))
 397                         seq_printf(m, "[%s] ", cksum_name[i]);
 398                 else
 399                         seq_printf(m, "%s ", cksum_name[i]);
 400         }
 401         seq_printf(m, "\n");
 402         return 0;
 403 }
 404
 405 static ssize_t osc_checksum_type_seq_write(struct file *file,
 406                                            const char __user *buffer,
 407                                            size_t count, loff_t *off)
 408 {
 409         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 410         int i;
 411         DECLARE_CKSUM_NAME;
 412         char kernbuf[10];
 413
 414         if (obd == NULL)
 415                 return 0;
 416
 417         if (count > sizeof(kernbuf) - 1)
 418                 return -EINVAL;
 419         if (copy_from_user(kernbuf, buffer, count))
 420                 return -EFAULT;
 421         if (count > 0 && kernbuf[count - 1] == '\n')
 422                 kernbuf[count - 1] = '\0';
 423         else
 424                 kernbuf[count] = '\0';
 425
 426         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 427                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 428                         continue;
 429                 if (!strcmp(kernbuf, cksum_name[i])) {
 430                        obd->u.cli.cl_cksum_type = 1 << i;
 431                        return count;
 432                 }
 433         }
 434         return -EINVAL;
 435 }
 436 LPROC_SEQ_FOPS(osc_checksum_type);
 437
 438 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 439 {
 440         struct obd_device *obd = m->private;
 441
 442         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 443 }
 444
 445 static ssize_t osc_resend_count_seq_write(struct file *file,
 446                                           const char __user *buffer,
 447                                           size_t count, loff_t *off)
 448 {
 449         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 450         int val, rc;
 451
 452         rc = lprocfs_write_helper(buffer, count, &val);
 453         if (rc)
 454                 return rc;
 455
 456         if (val < 0)
 457                 return -EINVAL;
 458
 459         atomic_set(&obd->u.cli.cl_resends, val);
 460
 461         return count;
 462 }
 463 LPROC_SEQ_FOPS(osc_resend_count);
 464
 465 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 466 {
 467         struct obd_device *obd = m->private;
 468         struct osc_device *od  = obd2osc_dev(obd);
 469
 470         return seq_printf(m, "%u\n", od->od_contention_time);
 471 }
 472
 473 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 474                                                 const char __user *buffer,
 475                                                 size_t count, loff_t *off)
 476 {
 477         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 478         struct osc_device *od  = obd2osc_dev(obd);
 479
 480         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 481 }
 482 LPROC_SEQ_FOPS(osc_contention_seconds);
 483
 484 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 485 {
 486         struct obd_device *obd = m->private;
 487         struct osc_device *od  = obd2osc_dev(obd);
 488
 489         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 490 }
 491
 492 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 493                                                const char __user *buffer,
 494                                     size_t count, loff_t *off)
 495 {
 496         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 497         struct osc_device *od  = obd2osc_dev(obd);
 498
 499         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 500                 count;
 501 }
 502 LPROC_SEQ_FOPS(osc_lockless_truncate);
 503
 504 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 505 {
 506         struct obd_device *obd = m->private;
 507         return seq_printf(m, "%u\n",
 508                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 509 }
 510 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 511
 512 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 513 {
 514         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 515 }
 516
 517 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 518                                                    const char __user *buffer,
 519                                                    size_t count, loff_t *off)
 520 {
 521         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 522         struct client_obd *cli = &dev->u.cli;
 523         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 524         int chunk_mask, rc;
 525         __u64 val;
 526
 527         rc = lprocfs_write_u64_helper(buffer, count, &val);
 528         if (rc)
 529                 return rc;
 530
 531         /* if the max_pages is specified in bytes, convert to pages */
 532         if (val >= ONE_MB_BRW_SIZE)
 533                 val >>= PAGE_CACHE_SHIFT;
 534
 535         LPROCFS_CLIMP_CHECK(dev);
 536
 537         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 538         /* max_pages_per_rpc must be chunk aligned */
 539         val = (val + ~chunk_mask) & chunk_mask;
 540         if (val == 0 || (ocd->ocd_brw_size != 0 &&
 541                          val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT)) {
 542                 LPROCFS_CLIMP_EXIT(dev);
 543                 return -ERANGE;
 544         }
 545         spin_lock(&cli->cl_loi_list_lock);
 546         cli->cl_max_pages_per_rpc = val;
 547         client_adjust_max_dirty(cli);
 548         spin_unlock(&cli->cl_loi_list_lock);
 549
 550         LPROCFS_CLIMP_EXIT(dev);
 551         return count;
 552 }
 553 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 554
 555 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 556 {
 557         struct obd_device *dev = m->private;
 558         struct client_obd *cli = &dev->u.cli;
 559         long pages;
 560         int mb;
 561
 562         pages = atomic_long_read(&cli->cl_unstable_count);
 563         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 564
 565         return seq_printf(m, "unstable_pages: %20ld\n"
 566                           "unstable_mb:              %10d\n",
 567                         pages, mb);
 568 }
 569 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 570
 571 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 572 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 573 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 574 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 575 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 576 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 577 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 578 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 579 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 580 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 581 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 582 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 583
 584 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 585
 586 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 587 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 588
 589 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 590         { .name =       "uuid",
 591           .fops =       &osc_uuid_fops                  },
 592         { .name =       "ping",
 593           .fops =       &osc_ping_fops,
 594           .proc_mode =  0222                            },
 595         { .name =       "connect_flags",
 596           .fops =       &osc_connect_flags_fops         },
 597         { .name =       "blocksize",
 598           .fops =       &osc_blksize_fops               },
 599         { .name =       "kbytestotal",
 600           .fops =       &osc_kbytestotal_fops           },
 601         { .name =       "kbytesfree",
 602           .fops =       &osc_kbytesfree_fops            },
 603         { .name =       "kbytesavail",
 604           .fops =       &osc_kbytesavail_fops           },
 605         { .name =       "filestotal",
 606           .fops =       &osc_filestotal_fops            },
 607         { .name =       "filesfree",
 608           .fops =       &osc_filesfree_fops             },
 609         { .name =       "ost_server_uuid",
 610           .fops =       &osc_server_uuid_fops           },
 611         { .name =       "ost_conn_uuid",
 612           .fops =       &osc_conn_uuid_fops             },
 613         { .name =       "active",
 614           .fops =       &osc_active_fops                },
 615         { .name =       "max_pages_per_rpc",
 616           .fops =       &osc_obd_max_pages_per_rpc_fops },
 617         { .name =       "max_rpcs_in_flight",
 618           .fops =       &osc_max_rpcs_in_flight_fops    },
 619         { .name =       "destroys_in_flight",
 620           .fops =       &osc_destroys_in_flight_fops    },
 621         { .name =       "max_dirty_mb",
 622           .fops =       &osc_max_dirty_mb_fops          },
 623         { .name =       "osc_cached_mb",
 624           .fops =       &osc_cached_mb_fops             },
 625         { .name =       "cur_dirty_bytes",
 626           .fops =       &osc_cur_dirty_bytes_fops       },
 627         { .name =       "cur_grant_bytes",
 628           .fops =       &osc_cur_grant_bytes_fops       },
 629         { .name =       "cur_lost_grant_bytes",
 630           .fops =       &osc_cur_lost_grant_bytes_fops  },
 631         { .name =       "grant_shrink_interval",
 632           .fops =       &osc_grant_shrink_interval_fops },
 633         { .name =       "checksums",
 634           .fops =       &osc_checksum_fops              },
 635         { .name =       "checksum_type",
 636           .fops =       &osc_checksum_type_fops         },
 637         { .name =       "resend_count",
 638           .fops =       &osc_resend_count_fops          },
 639         { .name =       "timeouts",
 640           .fops =       &osc_timeouts_fops              },
 641         { .name =       "contention_seconds",
 642           .fops =       &osc_contention_seconds_fops    },
 643         { .name =       "lockless_truncate",
 644           .fops =       &osc_lockless_truncate_fops     },
 645         { .name =       "import",
 646           .fops =       &osc_import_fops                },
 647         { .name =       "state",
 648           .fops =       &osc_state_fops                 },
 649         { .name =       "pinger_recov",
 650           .fops =       &osc_pinger_recov_fops          },
 651         { .name =       "unstable_stats",
 652           .fops =       &osc_unstable_stats_fops        },
 653         { NULL }
 654 };
 655
 656 #define pct(a,b) (b ? a * 100 / b : 0)
 657
 658 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 659 {
 660         struct timeval now;
 661         struct obd_device *dev = seq->private;
 662         struct client_obd *cli = &dev->u.cli;
 663         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 664         int i;
 665
 666         do_gettimeofday(&now);
 667
 668         spin_lock(&cli->cl_loi_list_lock);
 669
 670         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 671                    now.tv_sec, now.tv_usec);
 672         seq_printf(seq, "read RPCs in flight:  %d\n",
 673                    cli->cl_r_in_flight);
 674         seq_printf(seq, "write RPCs in flight: %d\n",
 675                    cli->cl_w_in_flight);
 676         seq_printf(seq, "pending write pages:  %d\n",
 677                    atomic_read(&cli->cl_pending_w_pages));
 678         seq_printf(seq, "pending read pages:   %d\n",
 679                    atomic_read(&cli->cl_pending_r_pages));
 680
 681         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 682         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 683         seq_printf(seq, "       rpcs   %% cum %%\n");
 684
 685         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 686         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 687
 688         read_cum = 0;
 689         write_cum = 0;
 690         for (i = 0; i < OBD_HIST_MAX; i++) {
 691                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 692                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 693
 694                 read_cum += r;
 695                 write_cum += w;
 696                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 697                            1 << i, r, pct(r, read_tot),
 698                            pct(read_cum, read_tot), w,
 699                            pct(w, write_tot),
 700                            pct(write_cum, write_tot));
 701                 if (read_cum == read_tot && write_cum == write_tot)
 702                         break;
 703         }
 704
 705         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 706         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 707         seq_printf(seq, "       rpcs   %% cum %%\n");
 708
 709         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 710         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 711
 712         read_cum = 0;
 713         write_cum = 0;
 714         for (i = 0; i < OBD_HIST_MAX; i++) {
 715                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 716                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 717                 read_cum += r;
 718                 write_cum += w;
 719                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 720                                  i, r, pct(r, read_tot),
 721                                  pct(read_cum, read_tot), w,
 722                                  pct(w, write_tot),
 723                                  pct(write_cum, write_tot));
 724                 if (read_cum == read_tot && write_cum == write_tot)
 725                         break;
 726         }
 727
 728         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 729         seq_printf(seq, "offset                rpcs   %% cum %% |");
 730         seq_printf(seq, "       rpcs   %% cum %%\n");
 731
 732         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 733         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 734
 735         read_cum = 0;
 736         write_cum = 0;
 737         for (i = 0; i < OBD_HIST_MAX; i++) {
 738                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 739                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 740                 read_cum += r;
 741                 write_cum += w;
 742                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 743                            (i == 0) ? 0 : 1 << (i - 1),
 744                            r, pct(r, read_tot), pct(read_cum, read_tot),
 745                            w, pct(w, write_tot), pct(write_cum, write_tot));
 746                 if (read_cum == read_tot && write_cum == write_tot)
 747                         break;
 748         }
 749
 750         spin_unlock(&cli->cl_loi_list_lock);
 751
 752         return 0;
 753 }
 754 #undef pct
 755
 756 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 757                                        const char __user *buf,
 758                                        size_t len, loff_t *off)
 759 {
 760         struct seq_file *seq = file->private_data;
 761         struct obd_device *dev = seq->private;
 762         struct client_obd *cli = &dev->u.cli;
 763
 764         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 765         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 766         lprocfs_oh_clear(&cli->cl_read_page_hist);
 767         lprocfs_oh_clear(&cli->cl_write_page_hist);
 768         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 769         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 770
 771         return len;
 772 }
 773 LPROC_SEQ_FOPS(osc_rpc_stats);
 774
 775 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 776 {
 777         struct timeval now;
 778         struct obd_device *dev = seq->private;
 779         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 780
 781         do_gettimeofday(&now);
 782
 783         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 784                    now.tv_sec, now.tv_usec);
 785         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 786                    stats->os_lockless_writes);
 787         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 788                    stats->os_lockless_reads);
 789         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 790                    stats->os_lockless_truncates);
 791         return 0;
 792 }
 793
 794 static ssize_t osc_stats_seq_write(struct file *file,
 795                                    const char __user *buf,
 796                                    size_t len, loff_t *off)
 797 {
 798         struct seq_file *seq = file->private_data;
 799         struct obd_device *dev = seq->private;
 800         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 801
 802         memset(stats, 0, sizeof(*stats));
 803         return len;
 804 }
 805
 806 LPROC_SEQ_FOPS(osc_stats);
 807
 808 int lproc_osc_attach_seqstat(struct obd_device *dev)
 809 {
 810         int rc;
 811
 812         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 813                                 &osc_stats_fops, dev);
 814         if (rc == 0)
 815                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 816                                             &osc_rpc_stats_fops, dev);
 817
 818         return rc;
 819 }
 820 #endif /* CONFIG_PROC_FS */