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,
  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         client_obd_list_lock(&cli->cl_loi_list_lock);
  88         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  89         client_obd_list_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         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 100         int val, rc;
 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         if (pool && val > cli->cl_max_rpcs_in_flight)
 111                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 112
 113         client_obd_list_lock(&cli->cl_loi_list_lock);
 114         cli->cl_max_rpcs_in_flight = val;
 115         client_adjust_max_dirty(cli);
 116         client_obd_list_unlock(&cli->cl_loi_list_lock);
 117
 118         LPROCFS_CLIMP_EXIT(dev);
 119         return count;
 120 }
 121 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 122
 123 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 124 {
 125         struct obd_device *dev = m->private;
 126         struct client_obd *cli = &dev->u.cli;
 127         long val;
 128         int mult;
 129
 130         client_obd_list_lock(&cli->cl_loi_list_lock);
 131         val = cli->cl_dirty_max_pages;
 132         client_obd_list_unlock(&cli->cl_loi_list_lock);
 133
 134         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 135         return lprocfs_seq_read_frac_helper(m, val, mult);
 136 }
 137
 138 static ssize_t osc_max_dirty_mb_seq_write(struct file *file,
 139                                           const char __user *buffer,
 140                                           size_t count, loff_t *off)
 141 {
 142         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 143         struct client_obd *cli = &dev->u.cli;
 144         int pages_number, mult, rc;
 145
 146         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 147         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 148         if (rc)
 149                 return rc;
 150
 151         if (pages_number <= 0 ||
 152             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 153             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 154                 return -ERANGE;
 155
 156         client_obd_list_lock(&cli->cl_loi_list_lock);
 157         cli->cl_dirty_max_pages = pages_number;
 158         osc_wake_cache_waiters(cli);
 159         client_obd_list_unlock(&cli->cl_loi_list_lock);
 160
 161         return count;
 162 }
 163 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 164
 165 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 166 {
 167         struct obd_device *dev = m->private;
 168         struct client_obd *cli = &dev->u.cli;
 169         int shift = 20 - PAGE_CACHE_SHIFT;
 170         int rc;
 171
 172         rc = seq_printf(m,
 173                       "used_mb: %ld\n"
 174                       "busy_cnt: %ld\n",
 175                       (atomic_long_read(&cli->cl_lru_in_list) +
 176                         atomic_long_read(&cli->cl_lru_busy)) >> shift,
 177                       atomic_long_read(&cli->cl_lru_busy));
 178
 179         return rc;
 180 }
 181
 182 /* shrink the number of caching pages to a specific number */
 183 static ssize_t
 184 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 185                         size_t count, loff_t *off)
 186 {
 187         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 188         struct client_obd *cli = &dev->u.cli;
 189         __u64 val;
 190         long pages_number;
 191         long rc;
 192         int mult;
 193         char kernbuf[128];
 194
 195         if (count >= sizeof(kernbuf))
 196                 return -EINVAL;
 197
 198         if (copy_from_user(kernbuf, buffer, count))
 199                 return -EFAULT;
 200         kernbuf[count] = 0;
 201
 202         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 203         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 204                   kernbuf;
 205         rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
 206
 207         if (rc)
 208                 return rc;
 209
 210         if (val > LONG_MAX)
 211                 return -ERANGE;
 212         pages_number = (long)val;
 213
 214         if (pages_number < 0)
 215                 return -ERANGE;
 216
 217         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 218         if (rc > 0) {
 219                 struct lu_env *env;
 220                 int refcheck;
 221
 222                 env = cl_env_get(&refcheck);
 223                 if (!IS_ERR(env)) {
 224                         (void)osc_lru_shrink(env, cli, rc, true);
 225                         cl_env_put(env, &refcheck);
 226                 }
 227         }
 228
 229         return count;
 230 }
 231 LPROC_SEQ_FOPS(osc_cached_mb);
 232
 233 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 234 {
 235         struct obd_device *dev = m->private;
 236         struct client_obd *cli = &dev->u.cli;
 237         int rc;
 238
 239         client_obd_list_lock(&cli->cl_loi_list_lock);
 240         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 241         client_obd_list_unlock(&cli->cl_loi_list_lock);
 242         return rc;
 243 }
 244 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 245
 246 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 247 {
 248         struct obd_device *dev = m->private;
 249         struct client_obd *cli = &dev->u.cli;
 250         int rc;
 251
 252         client_obd_list_lock(&cli->cl_loi_list_lock);
 253         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 254         client_obd_list_unlock(&cli->cl_loi_list_lock);
 255         return rc;
 256 }
 257
 258 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 259                                              const char __user *buffer,
 260                                              size_t count, loff_t *off)
 261 {
 262         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 263         struct client_obd *cli = &obd->u.cli;
 264         int                rc;
 265         __u64              val;
 266
 267         if (obd == NULL)
 268                 return 0;
 269
 270         rc = lprocfs_write_u64_helper(buffer, count, &val);
 271         if (rc)
 272                 return rc;
 273
 274         /* this is only for shrinking grant */
 275         client_obd_list_lock(&cli->cl_loi_list_lock);
 276         if (val >= cli->cl_avail_grant) {
 277                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 278                 return 0;
 279         }
 280         client_obd_list_unlock(&cli->cl_loi_list_lock);
 281
 282         LPROCFS_CLIMP_CHECK(obd);
 283         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 284                 rc = osc_shrink_grant_to_target(cli, val);
 285         LPROCFS_CLIMP_EXIT(obd);
 286         if (rc)
 287                 return rc;
 288         return count;
 289 }
 290 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 291
 292 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 293 {
 294         struct obd_device *dev = m->private;
 295         struct client_obd *cli = &dev->u.cli;
 296         int rc;
 297
 298         client_obd_list_lock(&cli->cl_loi_list_lock);
 299         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 300         client_obd_list_unlock(&cli->cl_loi_list_lock);
 301         return rc;
 302 }
 303 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 304
 305 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 306 {
 307         struct obd_device *obd = m->private;
 308
 309         if (obd == NULL)
 310                 return 0;
 311         return seq_printf(m, "%d\n",
 312                           obd->u.cli.cl_grant_shrink_interval);
 313 }
 314
 315 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 316                                                    const char __user *buffer,
 317                                                    size_t count, loff_t *off)
 318 {
 319         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 320         int val, rc;
 321
 322         if (obd == NULL)
 323                 return 0;
 324
 325         rc = lprocfs_write_helper(buffer, count, &val);
 326         if (rc)
 327                 return rc;
 328
 329         if (val <= 0)
 330                 return -ERANGE;
 331
 332         obd->u.cli.cl_grant_shrink_interval = val;
 333
 334         return count;
 335 }
 336 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 337
 338 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 339 {
 340         struct obd_device *obd = m->private;
 341
 342         if (obd == NULL)
 343                 return 0;
 344
 345         return seq_printf(m, "%d\n",
 346                           obd->u.cli.cl_checksum ? 1 : 0);
 347 }
 348
 349 static ssize_t osc_checksum_seq_write(struct file *file,
 350                                       const char __user *buffer,
 351                                       size_t count, loff_t *off)
 352 {
 353         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 354         int val, rc;
 355
 356         if (obd == NULL)
 357                 return 0;
 358
 359         rc = lprocfs_write_helper(buffer, count, &val);
 360         if (rc)
 361                 return rc;
 362
 363         obd->u.cli.cl_checksum = (val ? 1 : 0);
 364
 365         return count;
 366 }
 367 LPROC_SEQ_FOPS(osc_checksum);
 368
 369 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 370 {
 371         struct obd_device *obd = m->private;
 372         int i;
 373         DECLARE_CKSUM_NAME;
 374
 375         if (obd == NULL)
 376                 return 0;
 377
 378         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 379                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 380                         continue;
 381                 if (obd->u.cli.cl_cksum_type == (1 << i))
 382                         seq_printf(m, "[%s] ", cksum_name[i]);
 383                 else
 384                         seq_printf(m, "%s ", cksum_name[i]);
 385         }
 386         seq_printf(m, "\n");
 387         return 0;
 388 }
 389
 390 static ssize_t osc_checksum_type_seq_write(struct file *file,
 391                                            const char __user *buffer,
 392                                            size_t count, loff_t *off)
 393 {
 394         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 395         int i;
 396         DECLARE_CKSUM_NAME;
 397         char kernbuf[10];
 398
 399         if (obd == NULL)
 400                 return 0;
 401
 402         if (count > sizeof(kernbuf) - 1)
 403                 return -EINVAL;
 404         if (copy_from_user(kernbuf, buffer, count))
 405                 return -EFAULT;
 406         if (count > 0 && kernbuf[count - 1] == '\n')
 407                 kernbuf[count - 1] = '\0';
 408         else
 409                 kernbuf[count] = '\0';
 410
 411         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 412                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 413                         continue;
 414                 if (!strcmp(kernbuf, cksum_name[i])) {
 415                        obd->u.cli.cl_cksum_type = 1 << i;
 416                        return count;
 417                 }
 418         }
 419         return -EINVAL;
 420 }
 421 LPROC_SEQ_FOPS(osc_checksum_type);
 422
 423 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 424 {
 425         struct obd_device *obd = m->private;
 426
 427         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 428 }
 429
 430 static ssize_t osc_resend_count_seq_write(struct file *file,
 431                                           const char __user *buffer,
 432                                           size_t count, loff_t *off)
 433 {
 434         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 435         int val, rc;
 436
 437         rc = lprocfs_write_helper(buffer, count, &val);
 438         if (rc)
 439                 return rc;
 440
 441         if (val < 0)
 442                 return -EINVAL;
 443
 444         atomic_set(&obd->u.cli.cl_resends, val);
 445
 446         return count;
 447 }
 448 LPROC_SEQ_FOPS(osc_resend_count);
 449
 450 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 451 {
 452         struct obd_device *obd = m->private;
 453         struct osc_device *od  = obd2osc_dev(obd);
 454
 455         return seq_printf(m, "%u\n", od->od_contention_time);
 456 }
 457
 458 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 459                                                 const char __user *buffer,
 460                                                 size_t count, loff_t *off)
 461 {
 462         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 463         struct osc_device *od  = obd2osc_dev(obd);
 464
 465         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 466 }
 467 LPROC_SEQ_FOPS(osc_contention_seconds);
 468
 469 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 470 {
 471         struct obd_device *obd = m->private;
 472         struct osc_device *od  = obd2osc_dev(obd);
 473
 474         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 475 }
 476
 477 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 478                                                const char __user *buffer,
 479                                     size_t count, loff_t *off)
 480 {
 481         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 482         struct osc_device *od  = obd2osc_dev(obd);
 483
 484         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 485                 count;
 486 }
 487 LPROC_SEQ_FOPS(osc_lockless_truncate);
 488
 489 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 490 {
 491         struct obd_device *obd = m->private;
 492         return seq_printf(m, "%u\n",
 493                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 494 }
 495 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 496
 497 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 498 {
 499         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 500 }
 501
 502 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 503                                                    const char __user *buffer,
 504                                                    size_t count, loff_t *off)
 505 {
 506         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 507         struct client_obd *cli = &dev->u.cli;
 508         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 509         int chunk_mask, rc;
 510         __u64 val;
 511
 512         rc = lprocfs_write_u64_helper(buffer, count, &val);
 513         if (rc)
 514                 return rc;
 515
 516         /* if the max_pages is specified in bytes, convert to pages */
 517         if (val >= ONE_MB_BRW_SIZE)
 518                 val >>= PAGE_CACHE_SHIFT;
 519
 520         LPROCFS_CLIMP_CHECK(dev);
 521
 522         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 523         /* max_pages_per_rpc must be chunk aligned */
 524         val = (val + ~chunk_mask) & chunk_mask;
 525         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 526                 LPROCFS_CLIMP_EXIT(dev);
 527                 return -ERANGE;
 528         }
 529         client_obd_list_lock(&cli->cl_loi_list_lock);
 530         cli->cl_max_pages_per_rpc = val;
 531         client_adjust_max_dirty(cli);
 532         client_obd_list_unlock(&cli->cl_loi_list_lock);
 533
 534         LPROCFS_CLIMP_EXIT(dev);
 535         return count;
 536 }
 537 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 538
 539 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 540 {
 541         struct obd_device *dev = m->private;
 542         struct client_obd *cli = &dev->u.cli;
 543         long pages;
 544         int mb;
 545
 546         pages = atomic_long_read(&cli->cl_unstable_count);
 547         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 548
 549         return seq_printf(m, "unstable_pages: %20ld\n"
 550                           "unstable_mb:              %10d\n",
 551                         pages, mb);
 552 }
 553 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 554
 555 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 556 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 557 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 558 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 559 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 560 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 561 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 562 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 563 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 564 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 565 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 566 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 567
 568 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 569
 570 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 571 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 572
 573 struct lprocfs_seq_vars lprocfs_osc_obd_vars[] = {
 574         { .name =       "uuid",
 575           .fops =       &osc_uuid_fops                  },
 576         { .name =       "ping",
 577           .fops =       &osc_ping_fops,
 578           .proc_mode =  0222                            },
 579         { .name =       "connect_flags",
 580           .fops =       &osc_connect_flags_fops         },
 581         { .name =       "blocksize",
 582           .fops =       &osc_blksize_fops               },
 583         { .name =       "kbytestotal",
 584           .fops =       &osc_kbytestotal_fops           },
 585         { .name =       "kbytesfree",
 586           .fops =       &osc_kbytesfree_fops            },
 587         { .name =       "kbytesavail",
 588           .fops =       &osc_kbytesavail_fops           },
 589         { .name =       "filestotal",
 590           .fops =       &osc_filestotal_fops            },
 591         { .name =       "filesfree",
 592           .fops =       &osc_filesfree_fops             },
 593         { .name =       "ost_server_uuid",
 594           .fops =       &osc_server_uuid_fops           },
 595         { .name =       "ost_conn_uuid",
 596           .fops =       &osc_conn_uuid_fops             },
 597         { .name =       "active",
 598           .fops =       &osc_active_fops                },
 599         { .name =       "max_pages_per_rpc",
 600           .fops =       &osc_obd_max_pages_per_rpc_fops },
 601         { .name =       "max_rpcs_in_flight",
 602           .fops =       &osc_max_rpcs_in_flight_fops    },
 603         { .name =       "destroys_in_flight",
 604           .fops =       &osc_destroys_in_flight_fops    },
 605         { .name =       "max_dirty_mb",
 606           .fops =       &osc_max_dirty_mb_fops          },
 607         { .name =       "osc_cached_mb",
 608           .fops =       &osc_cached_mb_fops             },
 609         { .name =       "cur_dirty_bytes",
 610           .fops =       &osc_cur_dirty_bytes_fops       },
 611         { .name =       "cur_grant_bytes",
 612           .fops =       &osc_cur_grant_bytes_fops       },
 613         { .name =       "cur_lost_grant_bytes",
 614           .fops =       &osc_cur_lost_grant_bytes_fops  },
 615         { .name =       "grant_shrink_interval",
 616           .fops =       &osc_grant_shrink_interval_fops },
 617         { .name =       "checksums",
 618           .fops =       &osc_checksum_fops              },
 619         { .name =       "checksum_type",
 620           .fops =       &osc_checksum_type_fops         },
 621         { .name =       "resend_count",
 622           .fops =       &osc_resend_count_fops          },
 623         { .name =       "timeouts",
 624           .fops =       &osc_timeouts_fops              },
 625         { .name =       "contention_seconds",
 626           .fops =       &osc_contention_seconds_fops    },
 627         { .name =       "lockless_truncate",
 628           .fops =       &osc_lockless_truncate_fops     },
 629         { .name =       "import",
 630           .fops =       &osc_import_fops                },
 631         { .name =       "state",
 632           .fops =       &osc_state_fops                 },
 633         { .name =       "pinger_recov",
 634           .fops =       &osc_pinger_recov_fops          },
 635         { .name =       "unstable_stats",
 636           .fops =       &osc_unstable_stats_fops        },
 637         { 0 }
 638 };
 639
 640 #define pct(a,b) (b ? a * 100 / b : 0)
 641
 642 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 643 {
 644         struct timeval now;
 645         struct obd_device *dev = seq->private;
 646         struct client_obd *cli = &dev->u.cli;
 647         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 648         int i;
 649
 650         do_gettimeofday(&now);
 651
 652         client_obd_list_lock(&cli->cl_loi_list_lock);
 653
 654         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 655                    now.tv_sec, now.tv_usec);
 656         seq_printf(seq, "read RPCs in flight:  %d\n",
 657                    cli->cl_r_in_flight);
 658         seq_printf(seq, "write RPCs in flight: %d\n",
 659                    cli->cl_w_in_flight);
 660         seq_printf(seq, "pending write pages:  %d\n",
 661                    atomic_read(&cli->cl_pending_w_pages));
 662         seq_printf(seq, "pending read pages:   %d\n",
 663                    atomic_read(&cli->cl_pending_r_pages));
 664
 665         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 666         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 667         seq_printf(seq, "       rpcs   %% cum %%\n");
 668
 669         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 670         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 671
 672         read_cum = 0;
 673         write_cum = 0;
 674         for (i = 0; i < OBD_HIST_MAX; i++) {
 675                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 676                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 677
 678                 read_cum += r;
 679                 write_cum += w;
 680                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 681                            1 << i, r, pct(r, read_tot),
 682                            pct(read_cum, read_tot), w,
 683                            pct(w, write_tot),
 684                            pct(write_cum, write_tot));
 685                 if (read_cum == read_tot && write_cum == write_tot)
 686                         break;
 687         }
 688
 689         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 690         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 691         seq_printf(seq, "       rpcs   %% cum %%\n");
 692
 693         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 694         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 695
 696         read_cum = 0;
 697         write_cum = 0;
 698         for (i = 0; i < OBD_HIST_MAX; i++) {
 699                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 700                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 701                 read_cum += r;
 702                 write_cum += w;
 703                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 704                                  i, r, pct(r, read_tot),
 705                                  pct(read_cum, read_tot), w,
 706                                  pct(w, write_tot),
 707                                  pct(write_cum, write_tot));
 708                 if (read_cum == read_tot && write_cum == write_tot)
 709                         break;
 710         }
 711
 712         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 713         seq_printf(seq, "offset                rpcs   %% cum %% |");
 714         seq_printf(seq, "       rpcs   %% cum %%\n");
 715
 716         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 717         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 718
 719         read_cum = 0;
 720         write_cum = 0;
 721         for (i = 0; i < OBD_HIST_MAX; i++) {
 722                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 723                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 724                 read_cum += r;
 725                 write_cum += w;
 726                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 727                            (i == 0) ? 0 : 1 << (i - 1),
 728                            r, pct(r, read_tot), pct(read_cum, read_tot),
 729                            w, pct(w, write_tot), pct(write_cum, write_tot));
 730                 if (read_cum == read_tot && write_cum == write_tot)
 731                         break;
 732         }
 733
 734         client_obd_list_unlock(&cli->cl_loi_list_lock);
 735
 736         return 0;
 737 }
 738 #undef pct
 739
 740 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 741                                        const char __user *buf,
 742                                        size_t len, loff_t *off)
 743 {
 744         struct seq_file *seq = file->private_data;
 745         struct obd_device *dev = seq->private;
 746         struct client_obd *cli = &dev->u.cli;
 747
 748         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 749         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 750         lprocfs_oh_clear(&cli->cl_read_page_hist);
 751         lprocfs_oh_clear(&cli->cl_write_page_hist);
 752         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 753         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 754
 755         return len;
 756 }
 757 LPROC_SEQ_FOPS(osc_rpc_stats);
 758
 759 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 760 {
 761         struct timeval now;
 762         struct obd_device *dev = seq->private;
 763         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 764
 765         do_gettimeofday(&now);
 766
 767         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 768                    now.tv_sec, now.tv_usec);
 769         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 770                    stats->os_lockless_writes);
 771         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 772                    stats->os_lockless_reads);
 773         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 774                    stats->os_lockless_truncates);
 775         return 0;
 776 }
 777
 778 static ssize_t osc_stats_seq_write(struct file *file,
 779                                    const char __user *buf,
 780                                    size_t len, loff_t *off)
 781 {
 782         struct seq_file *seq = file->private_data;
 783         struct obd_device *dev = seq->private;
 784         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 785
 786         memset(stats, 0, sizeof(*stats));
 787         return len;
 788 }
 789
 790 LPROC_SEQ_FOPS(osc_stats);
 791
 792 int lproc_osc_attach_seqstat(struct obd_device *dev)
 793 {
 794         int rc;
 795
 796         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 797                                 &osc_stats_fops, dev);
 798         if (rc == 0)
 799                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 800                                             &osc_rpc_stats_fops, dev);
 801
 802         return rc;
 803 }
 804 #endif /* LPROCFS */