lustre/osc/lproc_osc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <linux/version.h>
  39 #include <asm/statfs.h>
  40 #include <obd_cksum.h>
  41 #include <obd_class.h>
  42 #include <lprocfs_status.h>
  43 #include <linux/seq_file.h>
  44 #include "osc_internal.h"
  45
  46 #ifdef LPROCFS
  47 static int osc_active_seq_show(struct seq_file *m, void *v)
  48 {
  49         struct obd_device *dev = m->private;
  50         int rc;
  51
  52         LPROCFS_CLIMP_CHECK(dev);
  53         rc = seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  54         LPROCFS_CLIMP_EXIT(dev);
  55         return rc;
  56 }
  57
  58 static ssize_t osc_active_seq_write(struct file *file, const char *buffer,
  59                                     size_t count, loff_t *off)
  60 {
  61         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  62         int val, rc;
  63
  64         rc = lprocfs_write_helper(buffer, count, &val);
  65         if (rc)
  66                 return rc;
  67         if (val < 0 || val > 1)
  68                 return -ERANGE;
  69
  70         /* opposite senses */
  71         if (dev->u.cli.cl_import->imp_deactive == val)
  72                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  73         else
  74                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  75
  76         return count;
  77 }
  78 LPROC_SEQ_FOPS(osc_active);
  79
  80 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  81 {
  82         struct obd_device *dev = m->private;
  83         struct client_obd *cli = &dev->u.cli;
  84         int rc;
  85
  86         client_obd_list_lock(&cli->cl_loi_list_lock);
  87         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  88         client_obd_list_unlock(&cli->cl_loi_list_lock);
  89         return rc;
  90 }
  91
  92 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  93                                                 const char *buffer,
  94                                                 size_t count, loff_t *off)
  95 {
  96         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  97         struct client_obd *cli = &dev->u.cli;
  98         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
  99         int val, rc;
 100
 101         rc = lprocfs_write_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         if (val < 1 || val > OSC_MAX_RIF_MAX)
 106                 return -ERANGE;
 107
 108         LPROCFS_CLIMP_CHECK(dev);
 109         if (pool && val > cli->cl_max_rpcs_in_flight)
 110                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 111
 112         client_obd_list_lock(&cli->cl_loi_list_lock);
 113         cli->cl_max_rpcs_in_flight = val;
 114         client_adjust_max_dirty(cli);
 115         client_obd_list_unlock(&cli->cl_loi_list_lock);
 116
 117         LPROCFS_CLIMP_EXIT(dev);
 118         return count;
 119 }
 120 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 121
 122 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 123 {
 124         struct obd_device *dev = m->private;
 125         struct client_obd *cli = &dev->u.cli;
 126         long val;
 127         int mult;
 128
 129         client_obd_list_lock(&cli->cl_loi_list_lock);
 130         val = cli->cl_dirty_max_pages;
 131         client_obd_list_unlock(&cli->cl_loi_list_lock);
 132
 133         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 134         return lprocfs_seq_read_frac_helper(m, val, mult);
 135 }
 136
 137 static ssize_t osc_max_dirty_mb_seq_write(struct file *file, const char *buffer,
 138                                           size_t count, loff_t *off)
 139 {
 140         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 141         struct client_obd *cli = &dev->u.cli;
 142         int pages_number, mult, rc;
 143
 144         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 145         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 146         if (rc)
 147                 return rc;
 148
 149         if (pages_number <= 0 ||
 150             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 151             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 152                 return -ERANGE;
 153
 154         client_obd_list_lock(&cli->cl_loi_list_lock);
 155         cli->cl_dirty_max_pages = pages_number;
 156         osc_wake_cache_waiters(cli);
 157         client_obd_list_unlock(&cli->cl_loi_list_lock);
 158
 159         return count;
 160 }
 161 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 162
 163 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 164 {
 165         struct obd_device *dev = m->private;
 166         struct client_obd *cli = &dev->u.cli;
 167         int shift = 20 - PAGE_CACHE_SHIFT;
 168         int rc;
 169
 170         rc = seq_printf(m,
 171                       "used_mb: %ld\n"
 172                       "busy_cnt: %ld\n",
 173                       (atomic_long_read(&cli->cl_lru_in_list) +
 174                         atomic_long_read(&cli->cl_lru_busy)) >> shift,
 175                       atomic_long_read(&cli->cl_lru_busy));
 176
 177         return rc;
 178 }
 179
 180 /* shrink the number of caching pages to a specific number */
 181 static ssize_t
 182 osc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 183                         size_t count, loff_t *off)
 184 {
 185         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 186         struct client_obd *cli = &dev->u.cli;
 187         __u64 val;
 188         long pages_number;
 189         long rc;
 190         int mult;
 191         char kernbuf[128];
 192
 193         if (count >= sizeof(kernbuf))
 194                 return -EINVAL;
 195
 196         if (copy_from_user(kernbuf, buffer, count))
 197                 return -EFAULT;
 198         kernbuf[count] = 0;
 199
 200         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 201         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 202                   kernbuf;
 203         rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
 204
 205         if (rc)
 206                 return rc;
 207
 208         if (val > LONG_MAX)
 209                 return -ERANGE;
 210         pages_number = (long)val;
 211
 212         if (pages_number < 0)
 213                 return -ERANGE;
 214
 215         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 216         if (rc > 0) {
 217                 struct lu_env *env;
 218                 int refcheck;
 219
 220                 env = cl_env_get(&refcheck);
 221                 if (!IS_ERR(env)) {
 222                         (void)osc_lru_shrink(env, cli, rc, true);
 223                         cl_env_put(env, &refcheck);
 224                 }
 225         }
 226
 227         return count;
 228 }
 229 LPROC_SEQ_FOPS(osc_cached_mb);
 230
 231 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 232 {
 233         struct obd_device *dev = m->private;
 234         struct client_obd *cli = &dev->u.cli;
 235         int rc;
 236
 237         client_obd_list_lock(&cli->cl_loi_list_lock);
 238         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 239         client_obd_list_unlock(&cli->cl_loi_list_lock);
 240         return rc;
 241 }
 242 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 243
 244 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 245 {
 246         struct obd_device *dev = m->private;
 247         struct client_obd *cli = &dev->u.cli;
 248         int rc;
 249
 250         client_obd_list_lock(&cli->cl_loi_list_lock);
 251         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 252         client_obd_list_unlock(&cli->cl_loi_list_lock);
 253         return rc;
 254 }
 255
 256 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file, const char *buffer,
 257                                              size_t count, loff_t *off)
 258 {
 259         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 260         struct client_obd *cli = &obd->u.cli;
 261         int                rc;
 262         __u64              val;
 263
 264         if (obd == NULL)
 265                 return 0;
 266
 267         rc = lprocfs_write_u64_helper(buffer, count, &val);
 268         if (rc)
 269                 return rc;
 270
 271         /* this is only for shrinking grant */
 272         client_obd_list_lock(&cli->cl_loi_list_lock);
 273         if (val >= cli->cl_avail_grant) {
 274                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 275                 return 0;
 276         }
 277         client_obd_list_unlock(&cli->cl_loi_list_lock);
 278
 279         LPROCFS_CLIMP_CHECK(obd);
 280         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 281                 rc = osc_shrink_grant_to_target(cli, val);
 282         LPROCFS_CLIMP_EXIT(obd);
 283         if (rc)
 284                 return rc;
 285         return count;
 286 }
 287 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 288
 289 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 290 {
 291         struct obd_device *dev = m->private;
 292         struct client_obd *cli = &dev->u.cli;
 293         int rc;
 294
 295         client_obd_list_lock(&cli->cl_loi_list_lock);
 296         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 297         client_obd_list_unlock(&cli->cl_loi_list_lock);
 298         return rc;
 299 }
 300 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 301
 302 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 303 {
 304         struct obd_device *obd = m->private;
 305
 306         if (obd == NULL)
 307                 return 0;
 308         return seq_printf(m, "%d\n",
 309                           obd->u.cli.cl_grant_shrink_interval);
 310 }
 311
 312 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 313                                                    const char *buffer,
 314                                                    size_t count, loff_t *off)
 315 {
 316         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 317         int val, rc;
 318
 319         if (obd == NULL)
 320                 return 0;
 321
 322         rc = lprocfs_write_helper(buffer, count, &val);
 323         if (rc)
 324                 return rc;
 325
 326         if (val <= 0)
 327                 return -ERANGE;
 328
 329         obd->u.cli.cl_grant_shrink_interval = val;
 330
 331         return count;
 332 }
 333 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 334
 335 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 336 {
 337         struct obd_device *obd = m->private;
 338
 339         if (obd == NULL)
 340                 return 0;
 341
 342         return seq_printf(m, "%d\n",
 343                           obd->u.cli.cl_checksum ? 1 : 0);
 344 }
 345
 346 static ssize_t osc_checksum_seq_write(struct file *file, const char *buffer,
 347                                       size_t count, loff_t *off)
 348 {
 349         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 350         int val, rc;
 351
 352         if (obd == NULL)
 353                 return 0;
 354
 355         rc = lprocfs_write_helper(buffer, count, &val);
 356         if (rc)
 357                 return rc;
 358
 359         obd->u.cli.cl_checksum = (val ? 1 : 0);
 360
 361         return count;
 362 }
 363 LPROC_SEQ_FOPS(osc_checksum);
 364
 365 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 366 {
 367         struct obd_device *obd = m->private;
 368         int i;
 369         DECLARE_CKSUM_NAME;
 370
 371         if (obd == NULL)
 372                 return 0;
 373
 374         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 375                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 376                         continue;
 377                 if (obd->u.cli.cl_cksum_type == (1 << i))
 378                         seq_printf(m, "[%s] ", cksum_name[i]);
 379                 else
 380                         seq_printf(m, "%s ", cksum_name[i]);
 381         }
 382         seq_printf(m, "\n");
 383         return 0;
 384 }
 385
 386 static ssize_t osc_checksum_type_seq_write(struct file *file, const char *buffer,
 387                                            size_t count, loff_t *off)
 388 {
 389         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 390         int i;
 391         DECLARE_CKSUM_NAME;
 392         char kernbuf[10];
 393
 394         if (obd == NULL)
 395                 return 0;
 396
 397         if (count > sizeof(kernbuf) - 1)
 398                 return -EINVAL;
 399         if (copy_from_user(kernbuf, buffer, count))
 400                 return -EFAULT;
 401         if (count > 0 && kernbuf[count - 1] == '\n')
 402                 kernbuf[count - 1] = '\0';
 403         else
 404                 kernbuf[count] = '\0';
 405
 406         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 407                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 408                         continue;
 409                 if (!strcmp(kernbuf, cksum_name[i])) {
 410                        obd->u.cli.cl_cksum_type = 1 << i;
 411                        return count;
 412                 }
 413         }
 414         return -EINVAL;
 415 }
 416 LPROC_SEQ_FOPS(osc_checksum_type);
 417
 418 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 419 {
 420         struct obd_device *obd = m->private;
 421
 422         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 423 }
 424
 425 static ssize_t osc_resend_count_seq_write(struct file *file, const char *buffer,
 426                                           size_t count, loff_t *off)
 427 {
 428         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 429         int val, rc;
 430
 431         rc = lprocfs_write_helper(buffer, count, &val);
 432         if (rc)
 433                 return rc;
 434
 435         if (val < 0)
 436                 return -EINVAL;
 437
 438         atomic_set(&obd->u.cli.cl_resends, val);
 439
 440         return count;
 441 }
 442 LPROC_SEQ_FOPS(osc_resend_count);
 443
 444 static int osc_contention_seconds_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_contention_time);
 450 }
 451
 452 static ssize_t osc_contention_seconds_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_contention_time) ?: count;
 459 }
 460 LPROC_SEQ_FOPS(osc_contention_seconds);
 461
 462 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 463 {
 464         struct obd_device *obd = m->private;
 465         struct osc_device *od  = obd2osc_dev(obd);
 466
 467         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 468 }
 469
 470 static ssize_t osc_lockless_truncate_seq_write(struct file *file, const char *buffer,
 471                                     size_t count, loff_t *off)
 472 {
 473         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 474         struct osc_device *od  = obd2osc_dev(obd);
 475
 476         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 477                 count;
 478 }
 479 LPROC_SEQ_FOPS(osc_lockless_truncate);
 480
 481 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 482 {
 483         struct obd_device *obd = m->private;
 484         return seq_printf(m, "%u\n",
 485                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 486 }
 487 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 488
 489 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 490 {
 491         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 492 }
 493
 494 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 495                                                    const char *buffer,
 496                                                    size_t count, loff_t *off)
 497 {
 498         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 499         struct client_obd *cli = &dev->u.cli;
 500         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 501         int chunk_mask, rc;
 502         __u64 val;
 503
 504         rc = lprocfs_write_u64_helper(buffer, count, &val);
 505         if (rc)
 506                 return rc;
 507
 508         /* if the max_pages is specified in bytes, convert to pages */
 509         if (val >= ONE_MB_BRW_SIZE)
 510                 val >>= PAGE_CACHE_SHIFT;
 511
 512         LPROCFS_CLIMP_CHECK(dev);
 513
 514         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 515         /* max_pages_per_rpc must be chunk aligned */
 516         val = (val + ~chunk_mask) & chunk_mask;
 517         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 518                 LPROCFS_CLIMP_EXIT(dev);
 519                 return -ERANGE;
 520         }
 521         client_obd_list_lock(&cli->cl_loi_list_lock);
 522         cli->cl_max_pages_per_rpc = val;
 523         client_adjust_max_dirty(cli);
 524         client_obd_list_unlock(&cli->cl_loi_list_lock);
 525
 526         LPROCFS_CLIMP_EXIT(dev);
 527         return count;
 528 }
 529 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 530
 531 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 532 {
 533         struct obd_device *dev = m->private;
 534         struct client_obd *cli = &dev->u.cli;
 535         long pages;
 536         int mb;
 537
 538         pages = atomic_long_read(&cli->cl_unstable_count);
 539         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 540
 541         return seq_printf(m, "unstable_pages: %20ld\n"
 542                           "unstable_mb:              %10d\n",
 543                         pages, mb);
 544 }
 545 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 546
 547 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 548 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 549 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 550 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 551 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 552 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 553 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 554 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 555 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 556 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 557 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 558 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 559
 560 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 561
 562 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 563 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 564
 565 struct lprocfs_seq_vars lprocfs_osc_obd_vars[] = {
 566         { .name =       "uuid",
 567           .fops =       &osc_uuid_fops                  },
 568         { .name =       "ping",
 569           .fops =       &osc_ping_fops,
 570           .proc_mode =  0222                            },
 571         { .name =       "connect_flags",
 572           .fops =       &osc_connect_flags_fops         },
 573         { .name =       "blocksize",
 574           .fops =       &osc_blksize_fops               },
 575         { .name =       "kbytestotal",
 576           .fops =       &osc_kbytestotal_fops           },
 577         { .name =       "kbytesfree",
 578           .fops =       &osc_kbytesfree_fops            },
 579         { .name =       "kbytesavail",
 580           .fops =       &osc_kbytesavail_fops           },
 581         { .name =       "filestotal",
 582           .fops =       &osc_filestotal_fops            },
 583         { .name =       "filesfree",
 584           .fops =       &osc_filesfree_fops             },
 585         { .name =       "ost_server_uuid",
 586           .fops =       &osc_server_uuid_fops           },
 587         { .name =       "ost_conn_uuid",
 588           .fops =       &osc_conn_uuid_fops             },
 589         { .name =       "active",
 590           .fops =       &osc_active_fops                },
 591         { .name =       "max_pages_per_rpc",
 592           .fops =       &osc_obd_max_pages_per_rpc_fops },
 593         { .name =       "max_rpcs_in_flight",
 594           .fops =       &osc_max_rpcs_in_flight_fops    },
 595         { .name =       "destroys_in_flight",
 596           .fops =       &osc_destroys_in_flight_fops    },
 597         { .name =       "max_dirty_mb",
 598           .fops =       &osc_max_dirty_mb_fops          },
 599         { .name =       "osc_cached_mb",
 600           .fops =       &osc_cached_mb_fops             },
 601         { .name =       "cur_dirty_bytes",
 602           .fops =       &osc_cur_dirty_bytes_fops       },
 603         { .name =       "cur_grant_bytes",
 604           .fops =       &osc_cur_grant_bytes_fops       },
 605         { .name =       "cur_lost_grant_bytes",
 606           .fops =       &osc_cur_lost_grant_bytes_fops  },
 607         { .name =       "grant_shrink_interval",
 608           .fops =       &osc_grant_shrink_interval_fops },
 609         { .name =       "checksums",
 610           .fops =       &osc_checksum_fops              },
 611         { .name =       "checksum_type",
 612           .fops =       &osc_checksum_type_fops         },
 613         { .name =       "resend_count",
 614           .fops =       &osc_resend_count_fops          },
 615         { .name =       "timeouts",
 616           .fops =       &osc_timeouts_fops              },
 617         { .name =       "contention_seconds",
 618           .fops =       &osc_contention_seconds_fops    },
 619         { .name =       "lockless_truncate",
 620           .fops =       &osc_lockless_truncate_fops     },
 621         { .name =       "import",
 622           .fops =       &osc_import_fops                },
 623         { .name =       "state",
 624           .fops =       &osc_state_fops                 },
 625         { .name =       "pinger_recov",
 626           .fops =       &osc_pinger_recov_fops          },
 627         { .name =       "unstable_stats",
 628           .fops =       &osc_unstable_stats_fops        },
 629         { 0 }
 630 };
 631
 632 #define pct(a,b) (b ? a * 100 / b : 0)
 633
 634 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 635 {
 636         struct timeval now;
 637         struct obd_device *dev = seq->private;
 638         struct client_obd *cli = &dev->u.cli;
 639         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 640         int i;
 641
 642         do_gettimeofday(&now);
 643
 644         client_obd_list_lock(&cli->cl_loi_list_lock);
 645
 646         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 647                    now.tv_sec, now.tv_usec);
 648         seq_printf(seq, "read RPCs in flight:  %d\n",
 649                    cli->cl_r_in_flight);
 650         seq_printf(seq, "write RPCs in flight: %d\n",
 651                    cli->cl_w_in_flight);
 652         seq_printf(seq, "pending write pages:  %d\n",
 653                    atomic_read(&cli->cl_pending_w_pages));
 654         seq_printf(seq, "pending read pages:   %d\n",
 655                    atomic_read(&cli->cl_pending_r_pages));
 656
 657         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 658         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 659         seq_printf(seq, "       rpcs   %% cum %%\n");
 660
 661         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 662         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 663
 664         read_cum = 0;
 665         write_cum = 0;
 666         for (i = 0; i < OBD_HIST_MAX; i++) {
 667                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 668                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 669
 670                 read_cum += r;
 671                 write_cum += w;
 672                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 673                            1 << i, r, pct(r, read_tot),
 674                            pct(read_cum, read_tot), w,
 675                            pct(w, write_tot),
 676                            pct(write_cum, write_tot));
 677                 if (read_cum == read_tot && write_cum == write_tot)
 678                         break;
 679         }
 680
 681         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 682         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 683         seq_printf(seq, "       rpcs   %% cum %%\n");
 684
 685         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 686         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 687
 688         read_cum = 0;
 689         write_cum = 0;
 690         for (i = 0; i < OBD_HIST_MAX; i++) {
 691                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 692                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 693                 read_cum += r;
 694                 write_cum += w;
 695                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 696                                  i, r, pct(r, read_tot),
 697                                  pct(read_cum, read_tot), w,
 698                                  pct(w, write_tot),
 699                                  pct(write_cum, write_tot));
 700                 if (read_cum == read_tot && write_cum == write_tot)
 701                         break;
 702         }
 703
 704         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 705         seq_printf(seq, "offset                rpcs   %% cum %% |");
 706         seq_printf(seq, "       rpcs   %% cum %%\n");
 707
 708         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 709         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 710
 711         read_cum = 0;
 712         write_cum = 0;
 713         for (i = 0; i < OBD_HIST_MAX; i++) {
 714                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 715                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 716                 read_cum += r;
 717                 write_cum += w;
 718                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 719                            (i == 0) ? 0 : 1 << (i - 1),
 720                            r, pct(r, read_tot), pct(read_cum, read_tot),
 721                            w, pct(w, write_tot), pct(write_cum, write_tot));
 722                 if (read_cum == read_tot && write_cum == write_tot)
 723                         break;
 724         }
 725
 726         client_obd_list_unlock(&cli->cl_loi_list_lock);
 727
 728         return 0;
 729 }
 730 #undef pct
 731
 732 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 733                                        size_t len, loff_t *off)
 734 {
 735         struct seq_file *seq = file->private_data;
 736         struct obd_device *dev = seq->private;
 737         struct client_obd *cli = &dev->u.cli;
 738
 739         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 740         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 741         lprocfs_oh_clear(&cli->cl_read_page_hist);
 742         lprocfs_oh_clear(&cli->cl_write_page_hist);
 743         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 744         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 745
 746         return len;
 747 }
 748 LPROC_SEQ_FOPS(osc_rpc_stats);
 749
 750 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 751 {
 752         struct timeval now;
 753         struct obd_device *dev = seq->private;
 754         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 755
 756         do_gettimeofday(&now);
 757
 758         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 759                    now.tv_sec, now.tv_usec);
 760         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 761                    stats->os_lockless_writes);
 762         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 763                    stats->os_lockless_reads);
 764         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 765                    stats->os_lockless_truncates);
 766         return 0;
 767 }
 768
 769 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 770                                    size_t len, loff_t *off)
 771 {
 772         struct seq_file *seq = file->private_data;
 773         struct obd_device *dev = seq->private;
 774         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 775
 776         memset(stats, 0, sizeof(*stats));
 777         return len;
 778 }
 779
 780 LPROC_SEQ_FOPS(osc_stats);
 781
 782 int lproc_osc_attach_seqstat(struct obd_device *dev)
 783 {
 784         int rc;
 785
 786         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 787                                 &osc_stats_fops, dev);
 788         if (rc == 0)
 789                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 790                                             &osc_rpc_stats_fops, dev);
 791
 792         return rc;
 793 }
 794 #endif /* LPROCFS */