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