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