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                 __u16 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_cur_dirty_grant_bytes_seq_show(struct seq_file *m, void *v)
 321 {
 322         struct obd_device *dev = m->private;
 323         struct client_obd *cli = &dev->u.cli;
 324         int rc;
 325
 326         spin_lock(&cli->cl_loi_list_lock);
 327         rc = seq_printf(m, "%lu\n", cli->cl_dirty_grant);
 328         spin_unlock(&cli->cl_loi_list_lock);
 329         return rc;
 330 }
 331 LPROC_SEQ_FOPS_RO(osc_cur_dirty_grant_bytes);
 332
 333 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 334 {
 335         struct obd_device *obd = m->private;
 336
 337         if (obd == NULL)
 338                 return 0;
 339         return seq_printf(m, "%d\n",
 340                           obd->u.cli.cl_grant_shrink_interval);
 341 }
 342
 343 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 344                                                    const char __user *buffer,
 345                                                    size_t count, loff_t *off)
 346 {
 347         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 348         int val, rc;
 349
 350         if (obd == NULL)
 351                 return 0;
 352
 353         rc = lprocfs_write_helper(buffer, count, &val);
 354         if (rc)
 355                 return rc;
 356
 357         if (val <= 0)
 358                 return -ERANGE;
 359
 360         obd->u.cli.cl_grant_shrink_interval = val;
 361
 362         return count;
 363 }
 364 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 365
 366 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 367 {
 368         struct obd_device *obd = m->private;
 369
 370         if (obd == NULL)
 371                 return 0;
 372
 373         return seq_printf(m, "%d\n",
 374                           obd->u.cli.cl_checksum ? 1 : 0);
 375 }
 376
 377 static ssize_t osc_checksum_seq_write(struct file *file,
 378                                       const char __user *buffer,
 379                                       size_t count, loff_t *off)
 380 {
 381         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 382         int val, rc;
 383
 384         if (obd == NULL)
 385                 return 0;
 386
 387         rc = lprocfs_write_helper(buffer, count, &val);
 388         if (rc)
 389                 return rc;
 390
 391         obd->u.cli.cl_checksum = (val ? 1 : 0);
 392
 393         return count;
 394 }
 395 LPROC_SEQ_FOPS(osc_checksum);
 396
 397 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 398 {
 399         struct obd_device *obd = m->private;
 400         int i;
 401         DECLARE_CKSUM_NAME;
 402
 403         if (obd == NULL)
 404                 return 0;
 405
 406         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 407                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 408                         continue;
 409                 if (obd->u.cli.cl_cksum_type == (1 << i))
 410                         seq_printf(m, "[%s] ", cksum_name[i]);
 411                 else
 412                         seq_printf(m, "%s ", cksum_name[i]);
 413         }
 414         seq_printf(m, "\n");
 415         return 0;
 416 }
 417
 418 static ssize_t osc_checksum_type_seq_write(struct file *file,
 419                                            const char __user *buffer,
 420                                            size_t count, loff_t *off)
 421 {
 422         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 423         int i;
 424         DECLARE_CKSUM_NAME;
 425         char kernbuf[10];
 426
 427         if (obd == NULL)
 428                 return 0;
 429
 430         if (count > sizeof(kernbuf) - 1)
 431                 return -EINVAL;
 432         if (copy_from_user(kernbuf, buffer, count))
 433                 return -EFAULT;
 434         if (count > 0 && kernbuf[count - 1] == '\n')
 435                 kernbuf[count - 1] = '\0';
 436         else
 437                 kernbuf[count] = '\0';
 438
 439         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 440                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 441                         continue;
 442                 if (!strcmp(kernbuf, cksum_name[i])) {
 443                        obd->u.cli.cl_cksum_type = 1 << i;
 444                        return count;
 445                 }
 446         }
 447         return -EINVAL;
 448 }
 449 LPROC_SEQ_FOPS(osc_checksum_type);
 450
 451 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 452 {
 453         struct obd_device *obd = m->private;
 454
 455         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 456 }
 457
 458 static ssize_t osc_resend_count_seq_write(struct file *file,
 459                                           const char __user *buffer,
 460                                           size_t count, loff_t *off)
 461 {
 462         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 463         int val, rc;
 464
 465         rc = lprocfs_write_helper(buffer, count, &val);
 466         if (rc)
 467                 return rc;
 468
 469         if (val < 0)
 470                 return -EINVAL;
 471
 472         atomic_set(&obd->u.cli.cl_resends, val);
 473
 474         return count;
 475 }
 476 LPROC_SEQ_FOPS(osc_resend_count);
 477
 478 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 479 {
 480         struct obd_device *obd = m->private;
 481         struct osc_device *od  = obd2osc_dev(obd);
 482
 483         return seq_printf(m, "%u\n", od->od_contention_time);
 484 }
 485
 486 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 487                                                 const char __user *buffer,
 488                                                 size_t count, loff_t *off)
 489 {
 490         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 491         struct osc_device *od  = obd2osc_dev(obd);
 492
 493         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 494 }
 495 LPROC_SEQ_FOPS(osc_contention_seconds);
 496
 497 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 498 {
 499         struct obd_device *obd = m->private;
 500         struct osc_device *od  = obd2osc_dev(obd);
 501
 502         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 503 }
 504
 505 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 506                                                const char __user *buffer,
 507                                     size_t count, loff_t *off)
 508 {
 509         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 510         struct osc_device *od  = obd2osc_dev(obd);
 511
 512         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 513                 count;
 514 }
 515 LPROC_SEQ_FOPS(osc_lockless_truncate);
 516
 517 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 518 {
 519         struct obd_device *obd = m->private;
 520         return seq_printf(m, "%u\n",
 521                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 522 }
 523 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 524
 525 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 526 {
 527         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 528 }
 529
 530 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 531                                                    const char __user *buffer,
 532                                                    size_t count, loff_t *off)
 533 {
 534         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 535         struct client_obd *cli = &dev->u.cli;
 536         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 537         int chunk_mask, rc;
 538         __u64 val;
 539
 540         rc = lprocfs_write_u64_helper(buffer, count, &val);
 541         if (rc)
 542                 return rc;
 543
 544         /* if the max_pages is specified in bytes, convert to pages */
 545         if (val >= ONE_MB_BRW_SIZE)
 546                 val >>= PAGE_CACHE_SHIFT;
 547
 548         LPROCFS_CLIMP_CHECK(dev);
 549
 550         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 551         /* max_pages_per_rpc must be chunk aligned */
 552         val = (val + ~chunk_mask) & chunk_mask;
 553         if (val == 0 || (ocd->ocd_brw_size != 0 &&
 554                          val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT)) {
 555                 LPROCFS_CLIMP_EXIT(dev);
 556                 return -ERANGE;
 557         }
 558         spin_lock(&cli->cl_loi_list_lock);
 559         cli->cl_max_pages_per_rpc = val;
 560         client_adjust_max_dirty(cli);
 561         spin_unlock(&cli->cl_loi_list_lock);
 562
 563         LPROCFS_CLIMP_EXIT(dev);
 564         return count;
 565 }
 566 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 567
 568 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 569 {
 570         struct obd_device *dev = m->private;
 571         struct client_obd *cli = &dev->u.cli;
 572         long pages;
 573         int mb;
 574
 575         pages = atomic_long_read(&cli->cl_unstable_count);
 576         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 577
 578         return seq_printf(m, "unstable_pages: %20ld\n"
 579                           "unstable_mb:              %10d\n",
 580                         pages, mb);
 581 }
 582 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 583
 584 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 585 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 586 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 587 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 588 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 589 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 590 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 591 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 592 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 593 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 594 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 595 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 596
 597 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 598
 599 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 600 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 601
 602 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 603         { .name =       "uuid",
 604           .fops =       &osc_uuid_fops                  },
 605         { .name =       "ping",
 606           .fops =       &osc_ping_fops,
 607           .proc_mode =  0222                            },
 608         { .name =       "connect_flags",
 609           .fops =       &osc_connect_flags_fops         },
 610         { .name =       "blocksize",
 611           .fops =       &osc_blksize_fops               },
 612         { .name =       "kbytestotal",
 613           .fops =       &osc_kbytestotal_fops           },
 614         { .name =       "kbytesfree",
 615           .fops =       &osc_kbytesfree_fops            },
 616         { .name =       "kbytesavail",
 617           .fops =       &osc_kbytesavail_fops           },
 618         { .name =       "filestotal",
 619           .fops =       &osc_filestotal_fops            },
 620         { .name =       "filesfree",
 621           .fops =       &osc_filesfree_fops             },
 622         { .name =       "ost_server_uuid",
 623           .fops =       &osc_server_uuid_fops           },
 624         { .name =       "ost_conn_uuid",
 625           .fops =       &osc_conn_uuid_fops             },
 626         { .name =       "active",
 627           .fops =       &osc_active_fops                },
 628         { .name =       "max_pages_per_rpc",
 629           .fops =       &osc_obd_max_pages_per_rpc_fops },
 630         { .name =       "max_rpcs_in_flight",
 631           .fops =       &osc_max_rpcs_in_flight_fops    },
 632         { .name =       "destroys_in_flight",
 633           .fops =       &osc_destroys_in_flight_fops    },
 634         { .name =       "max_dirty_mb",
 635           .fops =       &osc_max_dirty_mb_fops          },
 636         { .name =       "osc_cached_mb",
 637           .fops =       &osc_cached_mb_fops             },
 638         { .name =       "cur_dirty_bytes",
 639           .fops =       &osc_cur_dirty_bytes_fops       },
 640         { .name =       "cur_grant_bytes",
 641           .fops =       &osc_cur_grant_bytes_fops       },
 642         { .name =       "cur_lost_grant_bytes",
 643           .fops =       &osc_cur_lost_grant_bytes_fops  },
 644         { .name =       "cur_dirty_grant_bytes",
 645           .fops =       &osc_cur_dirty_grant_bytes_fops },
 646         { .name =       "grant_shrink_interval",
 647           .fops =       &osc_grant_shrink_interval_fops },
 648         { .name =       "checksums",
 649           .fops =       &osc_checksum_fops              },
 650         { .name =       "checksum_type",
 651           .fops =       &osc_checksum_type_fops         },
 652         { .name =       "resend_count",
 653           .fops =       &osc_resend_count_fops          },
 654         { .name =       "timeouts",
 655           .fops =       &osc_timeouts_fops              },
 656         { .name =       "contention_seconds",
 657           .fops =       &osc_contention_seconds_fops    },
 658         { .name =       "lockless_truncate",
 659           .fops =       &osc_lockless_truncate_fops     },
 660         { .name =       "import",
 661           .fops =       &osc_import_fops                },
 662         { .name =       "state",
 663           .fops =       &osc_state_fops                 },
 664         { .name =       "pinger_recov",
 665           .fops =       &osc_pinger_recov_fops          },
 666         { .name =       "unstable_stats",
 667           .fops =       &osc_unstable_stats_fops        },
 668         { NULL }
 669 };
 670
 671 #define pct(a,b) (b ? a * 100 / b : 0)
 672
 673 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 674 {
 675         struct timeval now;
 676         struct obd_device *dev = seq->private;
 677         struct client_obd *cli = &dev->u.cli;
 678         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 679         int i;
 680
 681         do_gettimeofday(&now);
 682
 683         spin_lock(&cli->cl_loi_list_lock);
 684
 685         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 686                    now.tv_sec, now.tv_usec);
 687         seq_printf(seq, "read RPCs in flight:  %d\n",
 688                    cli->cl_r_in_flight);
 689         seq_printf(seq, "write RPCs in flight: %d\n",
 690                    cli->cl_w_in_flight);
 691         seq_printf(seq, "pending write pages:  %d\n",
 692                    atomic_read(&cli->cl_pending_w_pages));
 693         seq_printf(seq, "pending read pages:   %d\n",
 694                    atomic_read(&cli->cl_pending_r_pages));
 695
 696         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 697         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 698         seq_printf(seq, "       rpcs   %% cum %%\n");
 699
 700         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 701         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 702
 703         read_cum = 0;
 704         write_cum = 0;
 705         for (i = 0; i < OBD_HIST_MAX; i++) {
 706                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 707                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 708
 709                 read_cum += r;
 710                 write_cum += w;
 711                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 712                            1 << i, r, pct(r, read_tot),
 713                            pct(read_cum, read_tot), w,
 714                            pct(w, write_tot),
 715                            pct(write_cum, write_tot));
 716                 if (read_cum == read_tot && write_cum == write_tot)
 717                         break;
 718         }
 719
 720         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 721         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 722         seq_printf(seq, "       rpcs   %% cum %%\n");
 723
 724         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 725         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 726
 727         read_cum = 0;
 728         write_cum = 0;
 729         for (i = 0; i < OBD_HIST_MAX; i++) {
 730                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 731                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 732                 read_cum += r;
 733                 write_cum += w;
 734                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 735                                  i, r, pct(r, read_tot),
 736                                  pct(read_cum, read_tot), w,
 737                                  pct(w, write_tot),
 738                                  pct(write_cum, write_tot));
 739                 if (read_cum == read_tot && write_cum == write_tot)
 740                         break;
 741         }
 742
 743         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 744         seq_printf(seq, "offset                rpcs   %% cum %% |");
 745         seq_printf(seq, "       rpcs   %% cum %%\n");
 746
 747         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 748         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 749
 750         read_cum = 0;
 751         write_cum = 0;
 752         for (i = 0; i < OBD_HIST_MAX; i++) {
 753                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 754                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 755                 read_cum += r;
 756                 write_cum += w;
 757                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 758                            (i == 0) ? 0 : 1 << (i - 1),
 759                            r, pct(r, read_tot), pct(read_cum, read_tot),
 760                            w, pct(w, write_tot), pct(write_cum, write_tot));
 761                 if (read_cum == read_tot && write_cum == write_tot)
 762                         break;
 763         }
 764
 765         spin_unlock(&cli->cl_loi_list_lock);
 766
 767         return 0;
 768 }
 769 #undef pct
 770
 771 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 772                                        const char __user *buf,
 773                                        size_t len, loff_t *off)
 774 {
 775         struct seq_file *seq = file->private_data;
 776         struct obd_device *dev = seq->private;
 777         struct client_obd *cli = &dev->u.cli;
 778
 779         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 780         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 781         lprocfs_oh_clear(&cli->cl_read_page_hist);
 782         lprocfs_oh_clear(&cli->cl_write_page_hist);
 783         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 784         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 785
 786         return len;
 787 }
 788 LPROC_SEQ_FOPS(osc_rpc_stats);
 789
 790 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 791 {
 792         struct timeval now;
 793         struct obd_device *dev = seq->private;
 794         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 795
 796         do_gettimeofday(&now);
 797
 798         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 799                    now.tv_sec, now.tv_usec);
 800         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 801                    stats->os_lockless_writes);
 802         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 803                    stats->os_lockless_reads);
 804         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 805                    stats->os_lockless_truncates);
 806         return 0;
 807 }
 808
 809 static ssize_t osc_stats_seq_write(struct file *file,
 810                                    const char __user *buf,
 811                                    size_t len, loff_t *off)
 812 {
 813         struct seq_file *seq = file->private_data;
 814         struct obd_device *dev = seq->private;
 815         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 816
 817         memset(stats, 0, sizeof(*stats));
 818         return len;
 819 }
 820
 821 LPROC_SEQ_FOPS(osc_stats);
 822
 823 int lproc_osc_attach_seqstat(struct obd_device *dev)
 824 {
 825         int rc;
 826
 827         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 828                                 &osc_stats_fops, dev);
 829         if (rc == 0)
 830                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 831                                             &osc_rpc_stats_fops, dev);
 832
 833         return rc;
 834 }
 835 #endif /* CONFIG_PROC_FS */