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, 2014, 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                       (atomic_long_read(&cli->cl_lru_in_list) +
 188                         atomic_long_read(&cli->cl_lru_busy)) >> shift,
 189                       atomic_long_read(&cli->cl_lru_busy));
 190
 191         return rc;
 192 }
 193
 194 /* shrink the number of caching pages to a specific number */
 195 static ssize_t
 196 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 197                         size_t count, loff_t *off)
 198 {
 199         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 200         struct client_obd *cli = &dev->u.cli;
 201         __u64 val;
 202         long pages_number;
 203         long rc;
 204         int mult;
 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         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 215         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 216                   kernbuf;
 217         rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
 218
 219         if (rc)
 220                 return rc;
 221
 222         if (val > LONG_MAX)
 223                 return -ERANGE;
 224         pages_number = (long)val;
 225
 226         if (pages_number < 0)
 227                 return -ERANGE;
 228
 229         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 230         if (rc > 0) {
 231                 struct lu_env *env;
 232                 int refcheck;
 233
 234                 env = cl_env_get(&refcheck);
 235                 if (!IS_ERR(env)) {
 236                         (void)osc_lru_shrink(env, cli, rc, true);
 237                         cl_env_put(env, &refcheck);
 238                 }
 239         }
 240
 241         return count;
 242 }
 243 LPROC_SEQ_FOPS(osc_cached_mb);
 244
 245 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 246 {
 247         struct obd_device *dev = m->private;
 248         struct client_obd *cli = &dev->u.cli;
 249         int rc;
 250
 251         spin_lock(&cli->cl_loi_list_lock);
 252         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 253         spin_unlock(&cli->cl_loi_list_lock);
 254         return rc;
 255 }
 256 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 257
 258 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 259 {
 260         struct obd_device *dev = m->private;
 261         struct client_obd *cli = &dev->u.cli;
 262         int rc;
 263
 264         spin_lock(&cli->cl_loi_list_lock);
 265         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 266         spin_unlock(&cli->cl_loi_list_lock);
 267         return rc;
 268 }
 269
 270 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 271                                              const char __user *buffer,
 272                                              size_t count, loff_t *off)
 273 {
 274         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 275         struct client_obd *cli = &obd->u.cli;
 276         int                rc;
 277         __u64              val;
 278
 279         if (obd == NULL)
 280                 return 0;
 281
 282         rc = lprocfs_write_u64_helper(buffer, count, &val);
 283         if (rc)
 284                 return rc;
 285
 286         /* this is only for shrinking grant */
 287         spin_lock(&cli->cl_loi_list_lock);
 288         if (val >= cli->cl_avail_grant) {
 289                 spin_unlock(&cli->cl_loi_list_lock);
 290                 return 0;
 291         }
 292
 293         spin_unlock(&cli->cl_loi_list_lock);
 294
 295         LPROCFS_CLIMP_CHECK(obd);
 296         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 297                 rc = osc_shrink_grant_to_target(cli, val);
 298         LPROCFS_CLIMP_EXIT(obd);
 299         if (rc)
 300                 return rc;
 301         return count;
 302 }
 303 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 304
 305 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 306 {
 307         struct obd_device *dev = m->private;
 308         struct client_obd *cli = &dev->u.cli;
 309         int rc;
 310
 311         spin_lock(&cli->cl_loi_list_lock);
 312         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 313         spin_unlock(&cli->cl_loi_list_lock);
 314         return rc;
 315 }
 316 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 317
 318 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 319 {
 320         struct obd_device *obd = m->private;
 321
 322         if (obd == NULL)
 323                 return 0;
 324         return seq_printf(m, "%d\n",
 325                           obd->u.cli.cl_grant_shrink_interval);
 326 }
 327
 328 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 329                                                    const char __user *buffer,
 330                                                    size_t count, loff_t *off)
 331 {
 332         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 333         int val, rc;
 334
 335         if (obd == NULL)
 336                 return 0;
 337
 338         rc = lprocfs_write_helper(buffer, count, &val);
 339         if (rc)
 340                 return rc;
 341
 342         if (val <= 0)
 343                 return -ERANGE;
 344
 345         obd->u.cli.cl_grant_shrink_interval = val;
 346
 347         return count;
 348 }
 349 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 350
 351 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 352 {
 353         struct obd_device *obd = m->private;
 354
 355         if (obd == NULL)
 356                 return 0;
 357
 358         return seq_printf(m, "%d\n",
 359                           obd->u.cli.cl_checksum ? 1 : 0);
 360 }
 361
 362 static ssize_t osc_checksum_seq_write(struct file *file,
 363                                       const char __user *buffer,
 364                                       size_t count, loff_t *off)
 365 {
 366         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 367         int val, rc;
 368
 369         if (obd == NULL)
 370                 return 0;
 371
 372         rc = lprocfs_write_helper(buffer, count, &val);
 373         if (rc)
 374                 return rc;
 375
 376         obd->u.cli.cl_checksum = (val ? 1 : 0);
 377
 378         return count;
 379 }
 380 LPROC_SEQ_FOPS(osc_checksum);
 381
 382 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 383 {
 384         struct obd_device *obd = m->private;
 385         int i;
 386         DECLARE_CKSUM_NAME;
 387
 388         if (obd == NULL)
 389                 return 0;
 390
 391         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 392                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 393                         continue;
 394                 if (obd->u.cli.cl_cksum_type == (1 << i))
 395                         seq_printf(m, "[%s] ", cksum_name[i]);
 396                 else
 397                         seq_printf(m, "%s ", cksum_name[i]);
 398         }
 399         seq_printf(m, "\n");
 400         return 0;
 401 }
 402
 403 static ssize_t osc_checksum_type_seq_write(struct file *file,
 404                                            const char __user *buffer,
 405                                            size_t count, loff_t *off)
 406 {
 407         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 408         int i;
 409         DECLARE_CKSUM_NAME;
 410         char kernbuf[10];
 411
 412         if (obd == NULL)
 413                 return 0;
 414
 415         if (count > sizeof(kernbuf) - 1)
 416                 return -EINVAL;
 417         if (copy_from_user(kernbuf, buffer, count))
 418                 return -EFAULT;
 419         if (count > 0 && kernbuf[count - 1] == '\n')
 420                 kernbuf[count - 1] = '\0';
 421         else
 422                 kernbuf[count] = '\0';
 423
 424         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 425                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 426                         continue;
 427                 if (!strcmp(kernbuf, cksum_name[i])) {
 428                        obd->u.cli.cl_cksum_type = 1 << i;
 429                        return count;
 430                 }
 431         }
 432         return -EINVAL;
 433 }
 434 LPROC_SEQ_FOPS(osc_checksum_type);
 435
 436 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 437 {
 438         struct obd_device *obd = m->private;
 439
 440         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 441 }
 442
 443 static ssize_t osc_resend_count_seq_write(struct file *file,
 444                                           const char __user *buffer,
 445                                           size_t count, loff_t *off)
 446 {
 447         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 448         int val, rc;
 449
 450         rc = lprocfs_write_helper(buffer, count, &val);
 451         if (rc)
 452                 return rc;
 453
 454         if (val < 0)
 455                 return -EINVAL;
 456
 457         atomic_set(&obd->u.cli.cl_resends, val);
 458
 459         return count;
 460 }
 461 LPROC_SEQ_FOPS(osc_resend_count);
 462
 463 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 464 {
 465         struct obd_device *obd = m->private;
 466         struct osc_device *od  = obd2osc_dev(obd);
 467
 468         return seq_printf(m, "%u\n", od->od_contention_time);
 469 }
 470
 471 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 472                                                 const char __user *buffer,
 473                                                 size_t count, loff_t *off)
 474 {
 475         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 476         struct osc_device *od  = obd2osc_dev(obd);
 477
 478         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 479 }
 480 LPROC_SEQ_FOPS(osc_contention_seconds);
 481
 482 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 483 {
 484         struct obd_device *obd = m->private;
 485         struct osc_device *od  = obd2osc_dev(obd);
 486
 487         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 488 }
 489
 490 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 491                                                const char __user *buffer,
 492                                     size_t count, loff_t *off)
 493 {
 494         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 495         struct osc_device *od  = obd2osc_dev(obd);
 496
 497         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 498                 count;
 499 }
 500 LPROC_SEQ_FOPS(osc_lockless_truncate);
 501
 502 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 503 {
 504         struct obd_device *obd = m->private;
 505         return seq_printf(m, "%u\n",
 506                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 507 }
 508 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 509
 510 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 511 {
 512         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 513 }
 514
 515 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 516                                                    const char __user *buffer,
 517                                                    size_t count, loff_t *off)
 518 {
 519         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 520         struct client_obd *cli = &dev->u.cli;
 521         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 522         int chunk_mask, rc;
 523         __u64 val;
 524
 525         rc = lprocfs_write_u64_helper(buffer, count, &val);
 526         if (rc)
 527                 return rc;
 528
 529         /* if the max_pages is specified in bytes, convert to pages */
 530         if (val >= ONE_MB_BRW_SIZE)
 531                 val >>= PAGE_CACHE_SHIFT;
 532
 533         LPROCFS_CLIMP_CHECK(dev);
 534
 535         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 536         /* max_pages_per_rpc must be chunk aligned */
 537         val = (val + ~chunk_mask) & chunk_mask;
 538         if (val == 0 || (ocd->ocd_brw_size != 0 &&
 539                          val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT)) {
 540                 LPROCFS_CLIMP_EXIT(dev);
 541                 return -ERANGE;
 542         }
 543         spin_lock(&cli->cl_loi_list_lock);
 544         cli->cl_max_pages_per_rpc = val;
 545         client_adjust_max_dirty(cli);
 546         spin_unlock(&cli->cl_loi_list_lock);
 547
 548         LPROCFS_CLIMP_EXIT(dev);
 549         return count;
 550 }
 551 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 552
 553 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 554 {
 555         struct obd_device *dev = m->private;
 556         struct client_obd *cli = &dev->u.cli;
 557         long pages;
 558         int mb;
 559
 560         pages = atomic_long_read(&cli->cl_unstable_count);
 561         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 562
 563         return seq_printf(m, "unstable_pages: %20ld\n"
 564                           "unstable_mb:              %10d\n",
 565                         pages, mb);
 566 }
 567 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 568
 569 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 570 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 571 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 572 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 573 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 574 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 575 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 576 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 577 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 578 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 579 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 580 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 581
 582 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 583
 584 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 585 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 586
 587 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 588         { .name =       "uuid",
 589           .fops =       &osc_uuid_fops                  },
 590         { .name =       "ping",
 591           .fops =       &osc_ping_fops,
 592           .proc_mode =  0222                            },
 593         { .name =       "connect_flags",
 594           .fops =       &osc_connect_flags_fops         },
 595         { .name =       "blocksize",
 596           .fops =       &osc_blksize_fops               },
 597         { .name =       "kbytestotal",
 598           .fops =       &osc_kbytestotal_fops           },
 599         { .name =       "kbytesfree",
 600           .fops =       &osc_kbytesfree_fops            },
 601         { .name =       "kbytesavail",
 602           .fops =       &osc_kbytesavail_fops           },
 603         { .name =       "filestotal",
 604           .fops =       &osc_filestotal_fops            },
 605         { .name =       "filesfree",
 606           .fops =       &osc_filesfree_fops             },
 607         { .name =       "ost_server_uuid",
 608           .fops =       &osc_server_uuid_fops           },
 609         { .name =       "ost_conn_uuid",
 610           .fops =       &osc_conn_uuid_fops             },
 611         { .name =       "active",
 612           .fops =       &osc_active_fops                },
 613         { .name =       "max_pages_per_rpc",
 614           .fops =       &osc_obd_max_pages_per_rpc_fops },
 615         { .name =       "max_rpcs_in_flight",
 616           .fops =       &osc_max_rpcs_in_flight_fops    },
 617         { .name =       "destroys_in_flight",
 618           .fops =       &osc_destroys_in_flight_fops    },
 619         { .name =       "max_dirty_mb",
 620           .fops =       &osc_max_dirty_mb_fops          },
 621         { .name =       "osc_cached_mb",
 622           .fops =       &osc_cached_mb_fops             },
 623         { .name =       "cur_dirty_bytes",
 624           .fops =       &osc_cur_dirty_bytes_fops       },
 625         { .name =       "cur_grant_bytes",
 626           .fops =       &osc_cur_grant_bytes_fops       },
 627         { .name =       "cur_lost_grant_bytes",
 628           .fops =       &osc_cur_lost_grant_bytes_fops  },
 629         { .name =       "grant_shrink_interval",
 630           .fops =       &osc_grant_shrink_interval_fops },
 631         { .name =       "checksums",
 632           .fops =       &osc_checksum_fops              },
 633         { .name =       "checksum_type",
 634           .fops =       &osc_checksum_type_fops         },
 635         { .name =       "resend_count",
 636           .fops =       &osc_resend_count_fops          },
 637         { .name =       "timeouts",
 638           .fops =       &osc_timeouts_fops              },
 639         { .name =       "contention_seconds",
 640           .fops =       &osc_contention_seconds_fops    },
 641         { .name =       "lockless_truncate",
 642           .fops =       &osc_lockless_truncate_fops     },
 643         { .name =       "import",
 644           .fops =       &osc_import_fops                },
 645         { .name =       "state",
 646           .fops =       &osc_state_fops                 },
 647         { .name =       "pinger_recov",
 648           .fops =       &osc_pinger_recov_fops          },
 649         { .name =       "unstable_stats",
 650           .fops =       &osc_unstable_stats_fops        },
 651         { NULL }
 652 };
 653
 654 #define pct(a,b) (b ? a * 100 / b : 0)
 655
 656 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 657 {
 658         struct timeval now;
 659         struct obd_device *dev = seq->private;
 660         struct client_obd *cli = &dev->u.cli;
 661         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 662         int i;
 663
 664         do_gettimeofday(&now);
 665
 666         spin_lock(&cli->cl_loi_list_lock);
 667
 668         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 669                    now.tv_sec, now.tv_usec);
 670         seq_printf(seq, "read RPCs in flight:  %d\n",
 671                    cli->cl_r_in_flight);
 672         seq_printf(seq, "write RPCs in flight: %d\n",
 673                    cli->cl_w_in_flight);
 674         seq_printf(seq, "pending write pages:  %d\n",
 675                    atomic_read(&cli->cl_pending_w_pages));
 676         seq_printf(seq, "pending read pages:   %d\n",
 677                    atomic_read(&cli->cl_pending_r_pages));
 678
 679         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 680         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 681         seq_printf(seq, "       rpcs   %% cum %%\n");
 682
 683         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 684         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 685
 686         read_cum = 0;
 687         write_cum = 0;
 688         for (i = 0; i < OBD_HIST_MAX; i++) {
 689                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 690                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 691
 692                 read_cum += r;
 693                 write_cum += w;
 694                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 695                            1 << i, r, pct(r, read_tot),
 696                            pct(read_cum, read_tot), w,
 697                            pct(w, write_tot),
 698                            pct(write_cum, write_tot));
 699                 if (read_cum == read_tot && write_cum == write_tot)
 700                         break;
 701         }
 702
 703         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 704         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 705         seq_printf(seq, "       rpcs   %% cum %%\n");
 706
 707         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 708         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 709
 710         read_cum = 0;
 711         write_cum = 0;
 712         for (i = 0; i < OBD_HIST_MAX; i++) {
 713                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 714                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 715                 read_cum += r;
 716                 write_cum += w;
 717                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 718                                  i, r, pct(r, read_tot),
 719                                  pct(read_cum, read_tot), w,
 720                                  pct(w, write_tot),
 721                                  pct(write_cum, write_tot));
 722                 if (read_cum == read_tot && write_cum == write_tot)
 723                         break;
 724         }
 725
 726         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 727         seq_printf(seq, "offset                rpcs   %% cum %% |");
 728         seq_printf(seq, "       rpcs   %% cum %%\n");
 729
 730         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 731         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 732
 733         read_cum = 0;
 734         write_cum = 0;
 735         for (i = 0; i < OBD_HIST_MAX; i++) {
 736                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 737                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 738                 read_cum += r;
 739                 write_cum += w;
 740                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 741                            (i == 0) ? 0 : 1 << (i - 1),
 742                            r, pct(r, read_tot), pct(read_cum, read_tot),
 743                            w, pct(w, write_tot), pct(write_cum, write_tot));
 744                 if (read_cum == read_tot && write_cum == write_tot)
 745                         break;
 746         }
 747
 748         spin_unlock(&cli->cl_loi_list_lock);
 749
 750         return 0;
 751 }
 752 #undef pct
 753
 754 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 755                                        const char __user *buf,
 756                                        size_t len, loff_t *off)
 757 {
 758         struct seq_file *seq = file->private_data;
 759         struct obd_device *dev = seq->private;
 760         struct client_obd *cli = &dev->u.cli;
 761
 762         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 763         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 764         lprocfs_oh_clear(&cli->cl_read_page_hist);
 765         lprocfs_oh_clear(&cli->cl_write_page_hist);
 766         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 767         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 768
 769         return len;
 770 }
 771 LPROC_SEQ_FOPS(osc_rpc_stats);
 772
 773 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 774 {
 775         struct timeval now;
 776         struct obd_device *dev = seq->private;
 777         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 778
 779         do_gettimeofday(&now);
 780
 781         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 782                    now.tv_sec, now.tv_usec);
 783         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 784                    stats->os_lockless_writes);
 785         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 786                    stats->os_lockless_reads);
 787         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 788                    stats->os_lockless_truncates);
 789         return 0;
 790 }
 791
 792 static ssize_t osc_stats_seq_write(struct file *file,
 793                                    const char __user *buf,
 794                                    size_t len, loff_t *off)
 795 {
 796         struct seq_file *seq = file->private_data;
 797         struct obd_device *dev = seq->private;
 798         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 799
 800         memset(stats, 0, sizeof(*stats));
 801         return len;
 802 }
 803
 804 LPROC_SEQ_FOPS(osc_stats);
 805
 806 int lproc_osc_attach_seqstat(struct obd_device *dev)
 807 {
 808         int rc;
 809
 810         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 811                                 &osc_stats_fops, dev);
 812         if (rc == 0)
 813                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 814                                             &osc_rpc_stats_fops, dev);
 815
 816         return rc;
 817 }
 818 #endif /* CONFIG_PROC_FS */