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
  51         LPROCFS_CLIMP_CHECK(dev);
  52         seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return 0;
  55 }
  56
  57 static ssize_t osc_active_seq_write(struct file *file,
  58                                     const char __user *buffer,
  59                                     size_t count, loff_t *off)
  60 {
  61         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  62         int rc;
  63         __s64 val;
  64
  65         rc = lprocfs_str_to_s64(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",
  76                         (int)val);
  77
  78         return count;
  79 }
  80 LPROC_SEQ_FOPS(osc_active);
  81
  82 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  83 {
  84         struct obd_device *dev = m->private;
  85         struct client_obd *cli = &dev->u.cli;
  86
  87         spin_lock(&cli->cl_loi_list_lock);
  88         seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  89         spin_unlock(&cli->cl_loi_list_lock);
  90         return 0;
  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 rc;
 100         int adding, added, req_count;
 101         __s64 val;
 102
 103         rc = lprocfs_str_to_s64(buffer, count, &val);
 104         if (rc)
 105                 return rc;
 106         if (val < 1 || val > OSC_MAX_RIF_MAX)
 107                 return -ERANGE;
 108
 109         LPROCFS_CLIMP_CHECK(dev);
 110
 111         adding = (int)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 rc;
 157         __s64 pages_number;
 158
 159         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 160         if (rc)
 161                 return rc;
 162
 163         pages_number >>= PAGE_CACHE_SHIFT;
 164
 165         if (pages_number <= 0 ||
 166             pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 167             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 168                 return -ERANGE;
 169
 170         spin_lock(&cli->cl_loi_list_lock);
 171         cli->cl_dirty_max_pages = pages_number;
 172         osc_wake_cache_waiters(cli);
 173         spin_unlock(&cli->cl_loi_list_lock);
 174
 175         return count;
 176 }
 177 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 178
 179 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 180 {
 181         struct obd_device *dev = m->private;
 182         struct client_obd *cli = &dev->u.cli;
 183         int shift = 20 - PAGE_CACHE_SHIFT;
 184
 185         seq_printf(m, "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 0;
 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         __s64 pages_number;
 204         long rc;
 205         char kernbuf[128];
 206
 207         if (count >= sizeof(kernbuf))
 208                 return -EINVAL;
 209
 210         if (copy_from_user(kernbuf, buffer, count))
 211                 return -EFAULT;
 212         kernbuf[count] = 0;
 213
 214         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 215                   kernbuf;
 216         rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
 217         if (rc)
 218                 return rc;
 219
 220         pages_number >>= PAGE_CACHE_SHIFT;
 221
 222         if (pages_number < 0)
 223                 return -ERANGE;
 224
 225         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 226         if (rc > 0) {
 227                 struct lu_env *env;
 228                 __u16 refcheck;
 229
 230                 env = cl_env_get(&refcheck);
 231                 if (!IS_ERR(env)) {
 232                         (void)osc_lru_shrink(env, cli, rc, true);
 233                         cl_env_put(env, &refcheck);
 234                 }
 235         }
 236
 237         return count;
 238 }
 239 LPROC_SEQ_FOPS(osc_cached_mb);
 240
 241 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 242 {
 243         struct obd_device *dev = m->private;
 244         struct client_obd *cli = &dev->u.cli;
 245
 246         spin_lock(&cli->cl_loi_list_lock);
 247         seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 248         spin_unlock(&cli->cl_loi_list_lock);
 249         return 0;
 250 }
 251 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 252
 253 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 254 {
 255         struct obd_device *dev = m->private;
 256         struct client_obd *cli = &dev->u.cli;
 257
 258         spin_lock(&cli->cl_loi_list_lock);
 259         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 260         spin_unlock(&cli->cl_loi_list_lock);
 261         return 0;
 262 }
 263
 264 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 265                                              const char __user *buffer,
 266                                              size_t count, loff_t *off)
 267 {
 268         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 269         struct client_obd *cli = &obd->u.cli;
 270         int                rc;
 271         __s64              val;
 272
 273         if (obd == NULL)
 274                 return 0;
 275
 276         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 277         if (rc)
 278                 return rc;
 279         if (val < 0)
 280                 return -ERANGE;
 281
 282         /* this is only for shrinking grant */
 283         spin_lock(&cli->cl_loi_list_lock);
 284         if (val >= cli->cl_avail_grant) {
 285                 spin_unlock(&cli->cl_loi_list_lock);
 286                 return 0;
 287         }
 288
 289         spin_unlock(&cli->cl_loi_list_lock);
 290
 291         LPROCFS_CLIMP_CHECK(obd);
 292         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 293                 rc = osc_shrink_grant_to_target(cli, val);
 294         LPROCFS_CLIMP_EXIT(obd);
 295         if (rc)
 296                 return rc;
 297         return count;
 298 }
 299 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 300
 301 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 302 {
 303         struct obd_device *dev = m->private;
 304         struct client_obd *cli = &dev->u.cli;
 305
 306         spin_lock(&cli->cl_loi_list_lock);
 307         seq_printf(m, "%lu\n", cli->cl_lost_grant);
 308         spin_unlock(&cli->cl_loi_list_lock);
 309         return 0;
 310 }
 311 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 312
 313 static int osc_cur_dirty_grant_bytes_seq_show(struct seq_file *m, void *v)
 314 {
 315         struct obd_device *dev = m->private;
 316         struct client_obd *cli = &dev->u.cli;
 317
 318         spin_lock(&cli->cl_loi_list_lock);
 319         seq_printf(m, "%lu\n", cli->cl_dirty_grant);
 320         spin_unlock(&cli->cl_loi_list_lock);
 321         return 0;
 322 }
 323 LPROC_SEQ_FOPS_RO(osc_cur_dirty_grant_bytes);
 324
 325 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 326 {
 327         struct obd_device *obd = m->private;
 328
 329         if (obd == NULL)
 330                 return 0;
 331         seq_printf(m, "%d\n",
 332                    obd->u.cli.cl_grant_shrink_interval);
 333         return 0;
 334 }
 335
 336 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 337                                                    const char __user *buffer,
 338                                                    size_t count, loff_t *off)
 339 {
 340         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 341         int rc;
 342         __s64 val;
 343
 344         if (obd == NULL)
 345                 return 0;
 346
 347         rc = lprocfs_str_to_s64(buffer, count, &val);
 348         if (rc)
 349                 return rc;
 350
 351         if (val <= 0 || val > INT_MAX)
 352                 return -ERANGE;
 353
 354         obd->u.cli.cl_grant_shrink_interval = val;
 355
 356         return count;
 357 }
 358 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 359
 360 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 361 {
 362         struct obd_device *obd = m->private;
 363
 364         if (obd == NULL)
 365                 return 0;
 366
 367         seq_printf(m, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 368         return 0;
 369 }
 370
 371 static ssize_t osc_checksum_seq_write(struct file *file,
 372                                       const char __user *buffer,
 373                                       size_t count, loff_t *off)
 374 {
 375         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 376         int rc;
 377         __s64 val;
 378
 379         if (obd == NULL)
 380                 return 0;
 381
 382         rc = lprocfs_str_to_s64(buffer, count, &val);
 383         if (rc)
 384                 return rc;
 385
 386         obd->u.cli.cl_checksum = !!val;
 387
 388         return count;
 389 }
 390 LPROC_SEQ_FOPS(osc_checksum);
 391
 392 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 393 {
 394         struct obd_device *obd = m->private;
 395         int i;
 396         DECLARE_CKSUM_NAME;
 397
 398         if (obd == NULL)
 399                 return 0;
 400
 401         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 402                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 403                         continue;
 404                 if (obd->u.cli.cl_cksum_type == (1 << i))
 405                         seq_printf(m, "[%s] ", cksum_name[i]);
 406                 else
 407                         seq_printf(m, "%s ", cksum_name[i]);
 408         }
 409         seq_printf(m, "\n");
 410         return 0;
 411 }
 412
 413 static ssize_t osc_checksum_type_seq_write(struct file *file,
 414                                            const char __user *buffer,
 415                                            size_t count, loff_t *off)
 416 {
 417         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 418         int i;
 419         DECLARE_CKSUM_NAME;
 420         char kernbuf[10];
 421
 422         if (obd == NULL)
 423                 return 0;
 424
 425         if (count > sizeof(kernbuf) - 1)
 426                 return -EINVAL;
 427         if (copy_from_user(kernbuf, buffer, count))
 428                 return -EFAULT;
 429         if (count > 0 && kernbuf[count - 1] == '\n')
 430                 kernbuf[count - 1] = '\0';
 431         else
 432                 kernbuf[count] = '\0';
 433
 434         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 435                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 436                         continue;
 437                 if (!strcmp(kernbuf, cksum_name[i])) {
 438                        obd->u.cli.cl_cksum_type = 1 << i;
 439                        return count;
 440                 }
 441         }
 442         return -EINVAL;
 443 }
 444 LPROC_SEQ_FOPS(osc_checksum_type);
 445
 446 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 447 {
 448         struct obd_device *obd = m->private;
 449
 450         seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 451         return 0;
 452 }
 453
 454 static ssize_t osc_resend_count_seq_write(struct file *file,
 455                                           const char __user *buffer,
 456                                           size_t count, loff_t *off)
 457 {
 458         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 459         int rc;
 460         __s64 val;
 461
 462         rc = lprocfs_str_to_s64(buffer, count, &val);
 463         if (rc)
 464                 return rc;
 465
 466         if (val < 0 || val > INT_MAX)
 467                 return -EINVAL;
 468
 469         atomic_set(&obd->u.cli.cl_resends, val);
 470
 471         return count;
 472 }
 473 LPROC_SEQ_FOPS(osc_resend_count);
 474
 475 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 476 {
 477         struct obd_device *obd = m->private;
 478         struct osc_device *od  = obd2osc_dev(obd);
 479
 480         seq_printf(m, "%u\n", od->od_contention_time);
 481         return 0;
 482 }
 483
 484 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 485                                                 const char __user *buffer,
 486                                                 size_t count, loff_t *off)
 487 {
 488         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 489         struct osc_device *od  = obd2osc_dev(obd);
 490         int rc;
 491         __s64 val;
 492
 493         rc = lprocfs_str_to_s64(buffer, count, &val);
 494         if (rc)
 495                 return rc;
 496         if (val < 0 || val > INT_MAX)
 497                 return -ERANGE;
 498
 499         od->od_contention_time = val;
 500
 501         return count;
 502 }
 503 LPROC_SEQ_FOPS(osc_contention_seconds);
 504
 505 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 506 {
 507         struct obd_device *obd = m->private;
 508         struct osc_device *od  = obd2osc_dev(obd);
 509
 510         seq_printf(m, "%u\n", od->od_lockless_truncate);
 511         return 0;
 512 }
 513
 514 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 515                                                const char __user *buffer,
 516                                     size_t count, loff_t *off)
 517 {
 518         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 519         struct osc_device *od  = obd2osc_dev(obd);
 520         int rc;
 521         __s64 val;
 522
 523         rc = lprocfs_str_to_s64(buffer, count, &val);
 524         if (rc)
 525                 return rc;
 526         if (val < 0)
 527                 return -ERANGE;
 528
 529         od->od_lockless_truncate = !!val;
 530
 531         return count;
 532 }
 533 LPROC_SEQ_FOPS(osc_lockless_truncate);
 534
 535 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 536 {
 537         struct obd_device *obd = m->private;
 538         seq_printf(m, "%u\n",
 539                    atomic_read(&obd->u.cli.cl_destroy_in_flight));
 540         return 0;
 541 }
 542 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 543
 544 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 545 {
 546         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 547 }
 548
 549 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 550                                                    const char __user *buffer,
 551                                                    size_t count, loff_t *off)
 552 {
 553         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 554         struct client_obd *cli = &dev->u.cli;
 555         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 556         int chunk_mask, rc;
 557         __s64 val;
 558
 559         rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
 560         if (rc)
 561                 return rc;
 562         if (val < 0)
 563                 return -ERANGE;
 564
 565         /* if the max_pages is specified in bytes, convert to pages */
 566         if (val >= ONE_MB_BRW_SIZE)
 567                 val >>= PAGE_CACHE_SHIFT;
 568
 569         LPROCFS_CLIMP_CHECK(dev);
 570
 571         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 572         /* max_pages_per_rpc must be chunk aligned */
 573         val = (val + ~chunk_mask) & chunk_mask;
 574         if (val == 0 || (ocd->ocd_brw_size != 0 &&
 575                          val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT)) {
 576                 LPROCFS_CLIMP_EXIT(dev);
 577                 return -ERANGE;
 578         }
 579         spin_lock(&cli->cl_loi_list_lock);
 580         cli->cl_max_pages_per_rpc = val;
 581         client_adjust_max_dirty(cli);
 582         spin_unlock(&cli->cl_loi_list_lock);
 583
 584         LPROCFS_CLIMP_EXIT(dev);
 585         return count;
 586 }
 587 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 588
 589 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 590 {
 591         struct obd_device *dev = m->private;
 592         struct client_obd *cli = &dev->u.cli;
 593         long pages;
 594         int mb;
 595
 596         pages = atomic_long_read(&cli->cl_unstable_count);
 597         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 598
 599         seq_printf(m, "unstable_pages: %20ld\n"
 600                    "unstable_mb:              %10d\n",
 601                    pages, mb);
 602         return 0;
 603 }
 604 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 605
 606 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 607 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 608 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 609 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 610 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 611 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 612 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 613 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 614 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 615 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 616 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 617 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 618
 619 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 620
 621 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 622 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 623
 624 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 625         { .name =       "uuid",
 626           .fops =       &osc_uuid_fops                  },
 627         { .name =       "ping",
 628           .fops =       &osc_ping_fops,
 629           .proc_mode =  0222                            },
 630         { .name =       "connect_flags",
 631           .fops =       &osc_connect_flags_fops         },
 632         { .name =       "blocksize",
 633           .fops =       &osc_blksize_fops               },
 634         { .name =       "kbytestotal",
 635           .fops =       &osc_kbytestotal_fops           },
 636         { .name =       "kbytesfree",
 637           .fops =       &osc_kbytesfree_fops            },
 638         { .name =       "kbytesavail",
 639           .fops =       &osc_kbytesavail_fops           },
 640         { .name =       "filestotal",
 641           .fops =       &osc_filestotal_fops            },
 642         { .name =       "filesfree",
 643           .fops =       &osc_filesfree_fops             },
 644         { .name =       "ost_server_uuid",
 645           .fops =       &osc_server_uuid_fops           },
 646         { .name =       "ost_conn_uuid",
 647           .fops =       &osc_conn_uuid_fops             },
 648         { .name =       "active",
 649           .fops =       &osc_active_fops                },
 650         { .name =       "max_pages_per_rpc",
 651           .fops =       &osc_obd_max_pages_per_rpc_fops },
 652         { .name =       "max_rpcs_in_flight",
 653           .fops =       &osc_max_rpcs_in_flight_fops    },
 654         { .name =       "destroys_in_flight",
 655           .fops =       &osc_destroys_in_flight_fops    },
 656         { .name =       "max_dirty_mb",
 657           .fops =       &osc_max_dirty_mb_fops          },
 658         { .name =       "osc_cached_mb",
 659           .fops =       &osc_cached_mb_fops             },
 660         { .name =       "cur_dirty_bytes",
 661           .fops =       &osc_cur_dirty_bytes_fops       },
 662         { .name =       "cur_grant_bytes",
 663           .fops =       &osc_cur_grant_bytes_fops       },
 664         { .name =       "cur_lost_grant_bytes",
 665           .fops =       &osc_cur_lost_grant_bytes_fops  },
 666         { .name =       "cur_dirty_grant_bytes",
 667           .fops =       &osc_cur_dirty_grant_bytes_fops },
 668         { .name =       "grant_shrink_interval",
 669           .fops =       &osc_grant_shrink_interval_fops },
 670         { .name =       "checksums",
 671           .fops =       &osc_checksum_fops              },
 672         { .name =       "checksum_type",
 673           .fops =       &osc_checksum_type_fops         },
 674         { .name =       "resend_count",
 675           .fops =       &osc_resend_count_fops          },
 676         { .name =       "timeouts",
 677           .fops =       &osc_timeouts_fops              },
 678         { .name =       "contention_seconds",
 679           .fops =       &osc_contention_seconds_fops    },
 680         { .name =       "lockless_truncate",
 681           .fops =       &osc_lockless_truncate_fops     },
 682         { .name =       "import",
 683           .fops =       &osc_import_fops                },
 684         { .name =       "state",
 685           .fops =       &osc_state_fops                 },
 686         { .name =       "pinger_recov",
 687           .fops =       &osc_pinger_recov_fops          },
 688         { .name =       "unstable_stats",
 689           .fops =       &osc_unstable_stats_fops        },
 690         { NULL }
 691 };
 692
 693 #define pct(a,b) (b ? a * 100 / b : 0)
 694
 695 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 696 {
 697         struct timeval now;
 698         struct obd_device *dev = seq->private;
 699         struct client_obd *cli = &dev->u.cli;
 700         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 701         int i;
 702
 703         do_gettimeofday(&now);
 704
 705         spin_lock(&cli->cl_loi_list_lock);
 706
 707         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 708                    now.tv_sec, now.tv_usec);
 709         seq_printf(seq, "read RPCs in flight:  %d\n",
 710                    cli->cl_r_in_flight);
 711         seq_printf(seq, "write RPCs in flight: %d\n",
 712                    cli->cl_w_in_flight);
 713         seq_printf(seq, "pending write pages:  %d\n",
 714                    atomic_read(&cli->cl_pending_w_pages));
 715         seq_printf(seq, "pending read pages:   %d\n",
 716                    atomic_read(&cli->cl_pending_r_pages));
 717
 718         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 719         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 720         seq_printf(seq, "       rpcs   %% cum %%\n");
 721
 722         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 723         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 724
 725         read_cum = 0;
 726         write_cum = 0;
 727         for (i = 0; i < OBD_HIST_MAX; i++) {
 728                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 729                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 730
 731                 read_cum += r;
 732                 write_cum += w;
 733                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 734                            1 << i, r, pct(r, read_tot),
 735                            pct(read_cum, read_tot), w,
 736                            pct(w, write_tot),
 737                            pct(write_cum, write_tot));
 738                 if (read_cum == read_tot && write_cum == write_tot)
 739                         break;
 740         }
 741
 742         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 743         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 744         seq_printf(seq, "       rpcs   %% cum %%\n");
 745
 746         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 747         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 748
 749         read_cum = 0;
 750         write_cum = 0;
 751         for (i = 0; i < OBD_HIST_MAX; i++) {
 752                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 753                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 754                 read_cum += r;
 755                 write_cum += w;
 756                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 757                            i, r, pct(r, read_tot),
 758                            pct(read_cum, read_tot), w,
 759                            pct(w, write_tot),
 760                            pct(write_cum, write_tot));
 761                 if (read_cum == read_tot && write_cum == write_tot)
 762                         break;
 763         }
 764
 765         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 766         seq_printf(seq, "offset                rpcs   %% cum %% |");
 767         seq_printf(seq, "       rpcs   %% cum %%\n");
 768
 769         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 770         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 771
 772         read_cum = 0;
 773         write_cum = 0;
 774         for (i = 0; i < OBD_HIST_MAX; i++) {
 775                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 776                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 777                 read_cum += r;
 778                 write_cum += w;
 779                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 780                            (i == 0) ? 0 : 1 << (i - 1),
 781                            r, pct(r, read_tot), pct(read_cum, read_tot),
 782                            w, pct(w, write_tot), pct(write_cum, write_tot));
 783                 if (read_cum == read_tot && write_cum == write_tot)
 784                         break;
 785         }
 786
 787         spin_unlock(&cli->cl_loi_list_lock);
 788
 789         return 0;
 790 }
 791 #undef pct
 792
 793 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 794                                        const char __user *buf,
 795                                        size_t len, loff_t *off)
 796 {
 797         struct seq_file *seq = file->private_data;
 798         struct obd_device *dev = seq->private;
 799         struct client_obd *cli = &dev->u.cli;
 800
 801         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 802         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 803         lprocfs_oh_clear(&cli->cl_read_page_hist);
 804         lprocfs_oh_clear(&cli->cl_write_page_hist);
 805         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 806         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 807
 808         return len;
 809 }
 810 LPROC_SEQ_FOPS(osc_rpc_stats);
 811
 812 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 813 {
 814         struct timeval now;
 815         struct obd_device *dev = seq->private;
 816         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 817
 818         do_gettimeofday(&now);
 819
 820         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 821                    now.tv_sec, now.tv_usec);
 822         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 823                    stats->os_lockless_writes);
 824         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 825                    stats->os_lockless_reads);
 826         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 827                    stats->os_lockless_truncates);
 828         return 0;
 829 }
 830
 831 static ssize_t osc_stats_seq_write(struct file *file,
 832                                    const char __user *buf,
 833                                    size_t len, loff_t *off)
 834 {
 835         struct seq_file *seq = file->private_data;
 836         struct obd_device *dev = seq->private;
 837         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 838
 839         memset(stats, 0, sizeof(*stats));
 840         return len;
 841 }
 842
 843 LPROC_SEQ_FOPS(osc_stats);
 844
 845 int lproc_osc_attach_seqstat(struct obd_device *dev)
 846 {
 847         int rc;
 848
 849         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 850                                 &osc_stats_fops, dev);
 851         if (rc == 0)
 852                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 853                                             &osc_rpc_stats_fops, dev);
 854
 855         return rc;
 856 }
 857 #endif /* CONFIG_PROC_FS */