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, 2013, 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 LPROCFS
  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, const char *buffer,
  59                                     size_t count, loff_t *off)
  60 {
  61         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  62         int val, rc;
  63
  64         rc = lprocfs_write_helper(buffer, count, &val);
  65         if (rc)
  66                 return rc;
  67         if (val < 0 || val > 1)
  68                 return -ERANGE;
  69
  70         /* opposite senses */
  71         if (dev->u.cli.cl_import->imp_deactive == val)
  72                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  73         else
  74                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  75
  76         return count;
  77 }
  78 LPROC_SEQ_FOPS(osc_active);
  79
  80 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  81 {
  82         struct obd_device *dev = m->private;
  83         struct client_obd *cli = &dev->u.cli;
  84         int rc;
  85
  86         client_obd_list_lock(&cli->cl_loi_list_lock);
  87         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  88         client_obd_list_unlock(&cli->cl_loi_list_lock);
  89         return rc;
  90 }
  91
  92 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  93                                                 const char *buffer,
  94                                                 size_t count, loff_t *off)
  95 {
  96         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  97         struct client_obd *cli = &dev->u.cli;
  98         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
  99         int val, rc;
 100
 101         rc = lprocfs_write_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         if (val < 1 || val > OSC_MAX_RIF_MAX)
 106                 return -ERANGE;
 107
 108         LPROCFS_CLIMP_CHECK(dev);
 109         if (pool && val > cli->cl_max_rpcs_in_flight)
 110                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 111
 112         client_obd_list_lock(&cli->cl_loi_list_lock);
 113         cli->cl_max_rpcs_in_flight = val;
 114         client_adjust_max_dirty(cli);
 115         client_obd_list_unlock(&cli->cl_loi_list_lock);
 116
 117         LPROCFS_CLIMP_EXIT(dev);
 118         return count;
 119 }
 120 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 121
 122 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 123 {
 124         struct obd_device *dev = m->private;
 125         struct client_obd *cli = &dev->u.cli;
 126         long val;
 127         int mult;
 128
 129         client_obd_list_lock(&cli->cl_loi_list_lock);
 130         val = cli->cl_dirty_max_pages;
 131         client_obd_list_unlock(&cli->cl_loi_list_lock);
 132
 133         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 134         return lprocfs_seq_read_frac_helper(m, val, mult);
 135 }
 136
 137 static ssize_t osc_max_dirty_mb_seq_write(struct file *file, const char *buffer,
 138                                           size_t count, loff_t *off)
 139 {
 140         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 141         struct client_obd *cli = &dev->u.cli;
 142         int pages_number, mult, rc;
 143
 144         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 145         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 146         if (rc)
 147                 return rc;
 148
 149         if (pages_number <= 0 ||
 150             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 151             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 152                 return -ERANGE;
 153
 154         client_obd_list_lock(&cli->cl_loi_list_lock);
 155         cli->cl_dirty_max_pages = pages_number;
 156         osc_wake_cache_waiters(cli);
 157         client_obd_list_unlock(&cli->cl_loi_list_lock);
 158
 159         return count;
 160 }
 161 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 162
 163 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 164 {
 165         struct obd_device *dev = m->private;
 166         struct client_obd *cli = &dev->u.cli;
 167         int shift = 20 - PAGE_CACHE_SHIFT;
 168         int rc;
 169
 170         rc = seq_printf(m,
 171                       "used_mb: %d\n"
 172                       "busy_cnt: %d\n",
 173                       (atomic_read(&cli->cl_lru_in_list) +
 174                         atomic_read(&cli->cl_lru_busy)) >> shift,
 175                       atomic_read(&cli->cl_lru_busy));
 176
 177         return rc;
 178 }
 179
 180 /* shrink the number of caching pages to a specific number */
 181 static ssize_t
 182 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 183                         size_t count, loff_t *off)
 184 {
 185         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 186         struct client_obd *cli = &dev->u.cli;
 187         int pages_number, mult, rc;
 188         char kernbuf[128];
 189
 190         if (count >= sizeof(kernbuf))
 191                 return -EINVAL;
 192
 193         if (copy_from_user(kernbuf, buffer, count))
 194                 return -EFAULT;
 195         kernbuf[count] = 0;
 196
 197         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 198         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 199                   kernbuf;
 200         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 201         if (rc)
 202                 return rc;
 203
 204         if (pages_number < 0)
 205                 return -ERANGE;
 206
 207         rc = atomic_read(&cli->cl_lru_in_list) - pages_number;
 208         if (rc > 0) {
 209                 struct lu_env *env;
 210                 int refcheck;
 211
 212                 env = cl_env_get(&refcheck);
 213                 if (!IS_ERR(env)) {
 214                         (void)osc_lru_shrink(env, cli, rc, true);
 215                         cl_env_put(env, &refcheck);
 216                 }
 217         }
 218
 219         return count;
 220 }
 221 LPROC_SEQ_FOPS(osc_cached_mb);
 222
 223 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 224 {
 225         struct obd_device *dev = m->private;
 226         struct client_obd *cli = &dev->u.cli;
 227         int rc;
 228
 229         client_obd_list_lock(&cli->cl_loi_list_lock);
 230         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 231         client_obd_list_unlock(&cli->cl_loi_list_lock);
 232         return rc;
 233 }
 234 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 235
 236 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 237 {
 238         struct obd_device *dev = m->private;
 239         struct client_obd *cli = &dev->u.cli;
 240         int rc;
 241
 242         client_obd_list_lock(&cli->cl_loi_list_lock);
 243         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 244         client_obd_list_unlock(&cli->cl_loi_list_lock);
 245         return rc;
 246 }
 247
 248 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file, const char *buffer,
 249                                              size_t count, loff_t *off)
 250 {
 251         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 252         struct client_obd *cli = &obd->u.cli;
 253         int                rc;
 254         __u64              val;
 255
 256         if (obd == NULL)
 257                 return 0;
 258
 259         rc = lprocfs_write_u64_helper(buffer, count, &val);
 260         if (rc)
 261                 return rc;
 262
 263         /* this is only for shrinking grant */
 264         client_obd_list_lock(&cli->cl_loi_list_lock);
 265         if (val >= cli->cl_avail_grant) {
 266                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 267                 return 0;
 268         }
 269         client_obd_list_unlock(&cli->cl_loi_list_lock);
 270
 271         LPROCFS_CLIMP_CHECK(obd);
 272         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 273                 rc = osc_shrink_grant_to_target(cli, val);
 274         LPROCFS_CLIMP_EXIT(obd);
 275         if (rc)
 276                 return rc;
 277         return count;
 278 }
 279 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 280
 281 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 282 {
 283         struct obd_device *dev = m->private;
 284         struct client_obd *cli = &dev->u.cli;
 285         int rc;
 286
 287         client_obd_list_lock(&cli->cl_loi_list_lock);
 288         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 289         client_obd_list_unlock(&cli->cl_loi_list_lock);
 290         return rc;
 291 }
 292 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 293
 294 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 295 {
 296         struct obd_device *obd = m->private;
 297
 298         if (obd == NULL)
 299                 return 0;
 300         return seq_printf(m, "%d\n",
 301                           obd->u.cli.cl_grant_shrink_interval);
 302 }
 303
 304 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 305                                                    const char *buffer,
 306                                                    size_t count, loff_t *off)
 307 {
 308         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 309         int val, rc;
 310
 311         if (obd == NULL)
 312                 return 0;
 313
 314         rc = lprocfs_write_helper(buffer, count, &val);
 315         if (rc)
 316                 return rc;
 317
 318         if (val <= 0)
 319                 return -ERANGE;
 320
 321         obd->u.cli.cl_grant_shrink_interval = val;
 322
 323         return count;
 324 }
 325 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 326
 327 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 328 {
 329         struct obd_device *obd = m->private;
 330
 331         if (obd == NULL)
 332                 return 0;
 333
 334         return seq_printf(m, "%d\n",
 335                           obd->u.cli.cl_checksum ? 1 : 0);
 336 }
 337
 338 static ssize_t osc_checksum_seq_write(struct file *file, const char *buffer,
 339                                       size_t count, loff_t *off)
 340 {
 341         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 342         int val, rc;
 343
 344         if (obd == NULL)
 345                 return 0;
 346
 347         rc = lprocfs_write_helper(buffer, count, &val);
 348         if (rc)
 349                 return rc;
 350
 351         obd->u.cli.cl_checksum = (val ? 1 : 0);
 352
 353         return count;
 354 }
 355 LPROC_SEQ_FOPS(osc_checksum);
 356
 357 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 358 {
 359         struct obd_device *obd = m->private;
 360         int i;
 361         DECLARE_CKSUM_NAME;
 362
 363         if (obd == NULL)
 364                 return 0;
 365
 366         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 367                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 368                         continue;
 369                 if (obd->u.cli.cl_cksum_type == (1 << i))
 370                         seq_printf(m, "[%s] ", cksum_name[i]);
 371                 else
 372                         seq_printf(m, "%s ", cksum_name[i]);
 373         }
 374         seq_printf(m, "\n");
 375         return 0;
 376 }
 377
 378 static ssize_t osc_checksum_type_seq_write(struct file *file, const char *buffer,
 379                                            size_t count, loff_t *off)
 380 {
 381         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 382         int i;
 383         DECLARE_CKSUM_NAME;
 384         char kernbuf[10];
 385
 386         if (obd == NULL)
 387                 return 0;
 388
 389         if (count > sizeof(kernbuf) - 1)
 390                 return -EINVAL;
 391         if (copy_from_user(kernbuf, buffer, count))
 392                 return -EFAULT;
 393         if (count > 0 && kernbuf[count - 1] == '\n')
 394                 kernbuf[count - 1] = '\0';
 395         else
 396                 kernbuf[count] = '\0';
 397
 398         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 399                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 400                         continue;
 401                 if (!strcmp(kernbuf, cksum_name[i])) {
 402                        obd->u.cli.cl_cksum_type = 1 << i;
 403                        return count;
 404                 }
 405         }
 406         return -EINVAL;
 407 }
 408 LPROC_SEQ_FOPS(osc_checksum_type);
 409
 410 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 411 {
 412         struct obd_device *obd = m->private;
 413
 414         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 415 }
 416
 417 static ssize_t osc_resend_count_seq_write(struct file *file, const char *buffer,
 418                                           size_t count, loff_t *off)
 419 {
 420         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 421         int val, rc;
 422
 423         rc = lprocfs_write_helper(buffer, count, &val);
 424         if (rc)
 425                 return rc;
 426
 427         if (val < 0)
 428                 return -EINVAL;
 429
 430         atomic_set(&obd->u.cli.cl_resends, val);
 431
 432         return count;
 433 }
 434 LPROC_SEQ_FOPS(osc_resend_count);
 435
 436 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 437 {
 438         struct obd_device *obd = m->private;
 439         struct osc_device *od  = obd2osc_dev(obd);
 440
 441         return seq_printf(m, "%u\n", od->od_contention_time);
 442 }
 443
 444 static ssize_t osc_contention_seconds_seq_write(struct file *file, const char *buffer,
 445                                                 size_t count, loff_t *off)
 446 {
 447         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 448         struct osc_device *od  = obd2osc_dev(obd);
 449
 450         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 451 }
 452 LPROC_SEQ_FOPS(osc_contention_seconds);
 453
 454 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 455 {
 456         struct obd_device *obd = m->private;
 457         struct osc_device *od  = obd2osc_dev(obd);
 458
 459         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 460 }
 461
 462 static ssize_t osc_lockless_truncate_seq_write(struct file *file, const char *buffer,
 463                                     size_t count, loff_t *off)
 464 {
 465         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 466         struct osc_device *od  = obd2osc_dev(obd);
 467
 468         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 469                 count;
 470 }
 471 LPROC_SEQ_FOPS(osc_lockless_truncate);
 472
 473 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 474 {
 475         struct obd_device *obd = m->private;
 476         return seq_printf(m, "%u\n",
 477                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 478 }
 479 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 480
 481 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 482 {
 483         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 484 }
 485
 486 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 487                                                    const char *buffer,
 488                                                    size_t count, loff_t *off)
 489 {
 490         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 491         struct client_obd *cli = &dev->u.cli;
 492         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 493         int chunk_mask, rc;
 494         __u64 val;
 495
 496         rc = lprocfs_write_u64_helper(buffer, count, &val);
 497         if (rc)
 498                 return rc;
 499
 500         /* if the max_pages is specified in bytes, convert to pages */
 501         if (val >= ONE_MB_BRW_SIZE)
 502                 val >>= PAGE_CACHE_SHIFT;
 503
 504         LPROCFS_CLIMP_CHECK(dev);
 505
 506         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 507         /* max_pages_per_rpc must be chunk aligned */
 508         val = (val + ~chunk_mask) & chunk_mask;
 509         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 510                 LPROCFS_CLIMP_EXIT(dev);
 511                 return -ERANGE;
 512         }
 513         client_obd_list_lock(&cli->cl_loi_list_lock);
 514         cli->cl_max_pages_per_rpc = val;
 515         client_adjust_max_dirty(cli);
 516         client_obd_list_unlock(&cli->cl_loi_list_lock);
 517
 518         LPROCFS_CLIMP_EXIT(dev);
 519         return count;
 520 }
 521 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 522
 523 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 524 {
 525         struct obd_device *dev = m->private;
 526         struct client_obd *cli = &dev->u.cli;
 527         int pages, mb;
 528
 529         pages = atomic_read(&cli->cl_unstable_count);
 530         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 531
 532         return seq_printf(m, "unstable_pages: %8d\n"
 533                         "unstable_mb:    %8d\n",
 534                         pages, mb);
 535 }
 536 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 537
 538 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 539 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 540 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 541 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 542 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 543 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 544 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 545 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 546 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 547 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 548 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 549 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 550
 551 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 552
 553 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 554 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 555
 556 struct lprocfs_seq_vars lprocfs_osc_obd_vars[] = {
 557         { .name =       "uuid",
 558           .fops =       &osc_uuid_fops                  },
 559         { .name =       "ping",
 560           .fops =       &osc_ping_fops,
 561           .proc_mode =  0222                            },
 562         { .name =       "connect_flags",
 563           .fops =       &osc_connect_flags_fops         },
 564         { .name =       "blocksize",
 565           .fops =       &osc_blksize_fops               },
 566         { .name =       "kbytestotal",
 567           .fops =       &osc_kbytestotal_fops           },
 568         { .name =       "kbytesfree",
 569           .fops =       &osc_kbytesfree_fops            },
 570         { .name =       "kbytesavail",
 571           .fops =       &osc_kbytesavail_fops           },
 572         { .name =       "filestotal",
 573           .fops =       &osc_filestotal_fops            },
 574         { .name =       "filesfree",
 575           .fops =       &osc_filesfree_fops             },
 576         { .name =       "ost_server_uuid",
 577           .fops =       &osc_server_uuid_fops           },
 578         { .name =       "ost_conn_uuid",
 579           .fops =       &osc_conn_uuid_fops             },
 580         { .name =       "active",
 581           .fops =       &osc_active_fops                },
 582         { .name =       "max_pages_per_rpc",
 583           .fops =       &osc_obd_max_pages_per_rpc_fops },
 584         { .name =       "max_rpcs_in_flight",
 585           .fops =       &osc_max_rpcs_in_flight_fops    },
 586         { .name =       "destroys_in_flight",
 587           .fops =       &osc_destroys_in_flight_fops    },
 588         { .name =       "max_dirty_mb",
 589           .fops =       &osc_max_dirty_mb_fops          },
 590         { .name =       "osc_cached_mb",
 591           .fops =       &osc_cached_mb_fops             },
 592         { .name =       "cur_dirty_bytes",
 593           .fops =       &osc_cur_dirty_bytes_fops       },
 594         { .name =       "cur_grant_bytes",
 595           .fops =       &osc_cur_grant_bytes_fops       },
 596         { .name =       "cur_lost_grant_bytes",
 597           .fops =       &osc_cur_lost_grant_bytes_fops  },
 598         { .name =       "grant_shrink_interval",
 599           .fops =       &osc_grant_shrink_interval_fops },
 600         { .name =       "checksums",
 601           .fops =       &osc_checksum_fops              },
 602         { .name =       "checksum_type",
 603           .fops =       &osc_checksum_type_fops         },
 604         { .name =       "resend_count",
 605           .fops =       &osc_resend_count_fops          },
 606         { .name =       "timeouts",
 607           .fops =       &osc_timeouts_fops              },
 608         { .name =       "contention_seconds",
 609           .fops =       &osc_contention_seconds_fops    },
 610         { .name =       "lockless_truncate",
 611           .fops =       &osc_lockless_truncate_fops     },
 612         { .name =       "import",
 613           .fops =       &osc_import_fops                },
 614         { .name =       "state",
 615           .fops =       &osc_state_fops                 },
 616         { .name =       "pinger_recov",
 617           .fops =       &osc_pinger_recov_fops          },
 618         { .name =       "unstable_stats",
 619           .fops =       &osc_unstable_stats_fops        },
 620         { 0 }
 621 };
 622
 623 #define pct(a,b) (b ? a * 100 / b : 0)
 624
 625 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 626 {
 627         struct timeval now;
 628         struct obd_device *dev = seq->private;
 629         struct client_obd *cli = &dev->u.cli;
 630         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 631         int i;
 632
 633         do_gettimeofday(&now);
 634
 635         client_obd_list_lock(&cli->cl_loi_list_lock);
 636
 637         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 638                    now.tv_sec, now.tv_usec);
 639         seq_printf(seq, "read RPCs in flight:  %d\n",
 640                    cli->cl_r_in_flight);
 641         seq_printf(seq, "write RPCs in flight: %d\n",
 642                    cli->cl_w_in_flight);
 643         seq_printf(seq, "pending write pages:  %d\n",
 644                    atomic_read(&cli->cl_pending_w_pages));
 645         seq_printf(seq, "pending read pages:   %d\n",
 646                    atomic_read(&cli->cl_pending_r_pages));
 647
 648         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 649         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 650         seq_printf(seq, "       rpcs   %% cum %%\n");
 651
 652         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 653         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 654
 655         read_cum = 0;
 656         write_cum = 0;
 657         for (i = 0; i < OBD_HIST_MAX; i++) {
 658                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 659                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 660
 661                 read_cum += r;
 662                 write_cum += w;
 663                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 664                            1 << i, r, pct(r, read_tot),
 665                            pct(read_cum, read_tot), w,
 666                            pct(w, write_tot),
 667                            pct(write_cum, write_tot));
 668                 if (read_cum == read_tot && write_cum == write_tot)
 669                         break;
 670         }
 671
 672         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 673         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 674         seq_printf(seq, "       rpcs   %% cum %%\n");
 675
 676         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 677         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 678
 679         read_cum = 0;
 680         write_cum = 0;
 681         for (i = 0; i < OBD_HIST_MAX; i++) {
 682                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 683                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 684                 read_cum += r;
 685                 write_cum += w;
 686                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 687                                  i, r, pct(r, read_tot),
 688                                  pct(read_cum, read_tot), w,
 689                                  pct(w, write_tot),
 690                                  pct(write_cum, write_tot));
 691                 if (read_cum == read_tot && write_cum == write_tot)
 692                         break;
 693         }
 694
 695         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 696         seq_printf(seq, "offset                rpcs   %% cum %% |");
 697         seq_printf(seq, "       rpcs   %% cum %%\n");
 698
 699         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 700         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 701
 702         read_cum = 0;
 703         write_cum = 0;
 704         for (i = 0; i < OBD_HIST_MAX; i++) {
 705                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 706                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 707                 read_cum += r;
 708                 write_cum += w;
 709                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 710                            (i == 0) ? 0 : 1 << (i - 1),
 711                            r, pct(r, read_tot), pct(read_cum, read_tot),
 712                            w, pct(w, write_tot), pct(write_cum, write_tot));
 713                 if (read_cum == read_tot && write_cum == write_tot)
 714                         break;
 715         }
 716
 717         client_obd_list_unlock(&cli->cl_loi_list_lock);
 718
 719         return 0;
 720 }
 721 #undef pct
 722
 723 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 724                                        size_t len, loff_t *off)
 725 {
 726         struct seq_file *seq = file->private_data;
 727         struct obd_device *dev = seq->private;
 728         struct client_obd *cli = &dev->u.cli;
 729
 730         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 731         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 732         lprocfs_oh_clear(&cli->cl_read_page_hist);
 733         lprocfs_oh_clear(&cli->cl_write_page_hist);
 734         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 735         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 736
 737         return len;
 738 }
 739 LPROC_SEQ_FOPS(osc_rpc_stats);
 740
 741 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 742 {
 743         struct timeval now;
 744         struct obd_device *dev = seq->private;
 745         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 746
 747         do_gettimeofday(&now);
 748
 749         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 750                    now.tv_sec, now.tv_usec);
 751         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 752                    stats->os_lockless_writes);
 753         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 754                    stats->os_lockless_reads);
 755         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 756                    stats->os_lockless_truncates);
 757         return 0;
 758 }
 759
 760 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 761                                    size_t len, loff_t *off)
 762 {
 763         struct seq_file *seq = file->private_data;
 764         struct obd_device *dev = seq->private;
 765         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 766
 767         memset(stats, 0, sizeof(*stats));
 768         return len;
 769 }
 770
 771 LPROC_SEQ_FOPS(osc_stats);
 772
 773 int lproc_osc_attach_seqstat(struct obd_device *dev)
 774 {
 775         int rc;
 776
 777         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 778                                 &osc_stats_fops, dev);
 779         if (rc == 0)
 780                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 781                                             &osc_rpc_stats_fops, dev);
 782
 783         return rc;
 784 }
 785 #endif /* LPROCFS */