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, 2014, 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 CONFIG_PROC_FS
  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         spin_lock(&cli->cl_loi_list_lock);
  88         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  89         spin_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         spin_lock(&cli->cl_loi_list_lock);
 114         cli->cl_max_rpcs_in_flight = val;
 115         client_adjust_max_dirty(cli);
 116         spin_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         spin_lock(&cli->cl_loi_list_lock);
 131         val = cli->cl_dirty_max_pages;
 132         spin_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         spin_lock(&cli->cl_loi_list_lock);
 157         cli->cl_dirty_max_pages = pages_number;
 158         osc_wake_cache_waiters(cli);
 159         spin_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         spin_lock(&cli->cl_loi_list_lock);
 240         rc = seq_printf(m, "%lu\n", cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 241         spin_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         spin_lock(&cli->cl_loi_list_lock);
 253         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 254         spin_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         spin_lock(&cli->cl_loi_list_lock);
 276         if (val >= cli->cl_avail_grant) {
 277                 spin_unlock(&cli->cl_loi_list_lock);
 278                 return 0;
 279         }
 280
 281         spin_unlock(&cli->cl_loi_list_lock);
 282
 283         LPROCFS_CLIMP_CHECK(obd);
 284         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 285                 rc = osc_shrink_grant_to_target(cli, val);
 286         LPROCFS_CLIMP_EXIT(obd);
 287         if (rc)
 288                 return rc;
 289         return count;
 290 }
 291 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 292
 293 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 294 {
 295         struct obd_device *dev = m->private;
 296         struct client_obd *cli = &dev->u.cli;
 297         int rc;
 298
 299         spin_lock(&cli->cl_loi_list_lock);
 300         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 301         spin_unlock(&cli->cl_loi_list_lock);
 302         return rc;
 303 }
 304 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 305
 306 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 307 {
 308         struct obd_device *obd = m->private;
 309
 310         if (obd == NULL)
 311                 return 0;
 312         return seq_printf(m, "%d\n",
 313                           obd->u.cli.cl_grant_shrink_interval);
 314 }
 315
 316 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 317                                                    const char __user *buffer,
 318                                                    size_t count, loff_t *off)
 319 {
 320         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 321         int val, rc;
 322
 323         if (obd == NULL)
 324                 return 0;
 325
 326         rc = lprocfs_write_helper(buffer, count, &val);
 327         if (rc)
 328                 return rc;
 329
 330         if (val <= 0)
 331                 return -ERANGE;
 332
 333         obd->u.cli.cl_grant_shrink_interval = val;
 334
 335         return count;
 336 }
 337 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 338
 339 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 340 {
 341         struct obd_device *obd = m->private;
 342
 343         if (obd == NULL)
 344                 return 0;
 345
 346         return seq_printf(m, "%d\n",
 347                           obd->u.cli.cl_checksum ? 1 : 0);
 348 }
 349
 350 static ssize_t osc_checksum_seq_write(struct file *file,
 351                                       const char __user *buffer,
 352                                       size_t count, loff_t *off)
 353 {
 354         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 355         int val, rc;
 356
 357         if (obd == NULL)
 358                 return 0;
 359
 360         rc = lprocfs_write_helper(buffer, count, &val);
 361         if (rc)
 362                 return rc;
 363
 364         obd->u.cli.cl_checksum = (val ? 1 : 0);
 365
 366         return count;
 367 }
 368 LPROC_SEQ_FOPS(osc_checksum);
 369
 370 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 371 {
 372         struct obd_device *obd = m->private;
 373         int i;
 374         DECLARE_CKSUM_NAME;
 375
 376         if (obd == NULL)
 377                 return 0;
 378
 379         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 380                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 381                         continue;
 382                 if (obd->u.cli.cl_cksum_type == (1 << i))
 383                         seq_printf(m, "[%s] ", cksum_name[i]);
 384                 else
 385                         seq_printf(m, "%s ", cksum_name[i]);
 386         }
 387         seq_printf(m, "\n");
 388         return 0;
 389 }
 390
 391 static ssize_t osc_checksum_type_seq_write(struct file *file,
 392                                            const char __user *buffer,
 393                                            size_t count, loff_t *off)
 394 {
 395         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 396         int i;
 397         DECLARE_CKSUM_NAME;
 398         char kernbuf[10];
 399
 400         if (obd == NULL)
 401                 return 0;
 402
 403         if (count > sizeof(kernbuf) - 1)
 404                 return -EINVAL;
 405         if (copy_from_user(kernbuf, buffer, count))
 406                 return -EFAULT;
 407         if (count > 0 && kernbuf[count - 1] == '\n')
 408                 kernbuf[count - 1] = '\0';
 409         else
 410                 kernbuf[count] = '\0';
 411
 412         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 413                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 414                         continue;
 415                 if (!strcmp(kernbuf, cksum_name[i])) {
 416                        obd->u.cli.cl_cksum_type = 1 << i;
 417                        return count;
 418                 }
 419         }
 420         return -EINVAL;
 421 }
 422 LPROC_SEQ_FOPS(osc_checksum_type);
 423
 424 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 425 {
 426         struct obd_device *obd = m->private;
 427
 428         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 429 }
 430
 431 static ssize_t osc_resend_count_seq_write(struct file *file,
 432                                           const char __user *buffer,
 433                                           size_t count, loff_t *off)
 434 {
 435         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 436         int val, rc;
 437
 438         rc = lprocfs_write_helper(buffer, count, &val);
 439         if (rc)
 440                 return rc;
 441
 442         if (val < 0)
 443                 return -EINVAL;
 444
 445         atomic_set(&obd->u.cli.cl_resends, val);
 446
 447         return count;
 448 }
 449 LPROC_SEQ_FOPS(osc_resend_count);
 450
 451 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 452 {
 453         struct obd_device *obd = m->private;
 454         struct osc_device *od  = obd2osc_dev(obd);
 455
 456         return seq_printf(m, "%u\n", od->od_contention_time);
 457 }
 458
 459 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 460                                                 const char __user *buffer,
 461                                                 size_t count, loff_t *off)
 462 {
 463         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 464         struct osc_device *od  = obd2osc_dev(obd);
 465
 466         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?: count;
 467 }
 468 LPROC_SEQ_FOPS(osc_contention_seconds);
 469
 470 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 471 {
 472         struct obd_device *obd = m->private;
 473         struct osc_device *od  = obd2osc_dev(obd);
 474
 475         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 476 }
 477
 478 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 479                                                const char __user *buffer,
 480                                     size_t count, loff_t *off)
 481 {
 482         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 483         struct osc_device *od  = obd2osc_dev(obd);
 484
 485         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 486                 count;
 487 }
 488 LPROC_SEQ_FOPS(osc_lockless_truncate);
 489
 490 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 491 {
 492         struct obd_device *obd = m->private;
 493         return seq_printf(m, "%u\n",
 494                           atomic_read(&obd->u.cli.cl_destroy_in_flight));
 495 }
 496 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 497
 498 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 499 {
 500         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 501 }
 502
 503 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 504                                                    const char __user *buffer,
 505                                                    size_t count, loff_t *off)
 506 {
 507         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 508         struct client_obd *cli = &dev->u.cli;
 509         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 510         int chunk_mask, rc;
 511         __u64 val;
 512
 513         rc = lprocfs_write_u64_helper(buffer, count, &val);
 514         if (rc)
 515                 return rc;
 516
 517         /* if the max_pages is specified in bytes, convert to pages */
 518         if (val >= ONE_MB_BRW_SIZE)
 519                 val >>= PAGE_CACHE_SHIFT;
 520
 521         LPROCFS_CLIMP_CHECK(dev);
 522
 523         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 524         /* max_pages_per_rpc must be chunk aligned */
 525         val = (val + ~chunk_mask) & chunk_mask;
 526         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 527                 LPROCFS_CLIMP_EXIT(dev);
 528                 return -ERANGE;
 529         }
 530         spin_lock(&cli->cl_loi_list_lock);
 531         cli->cl_max_pages_per_rpc = val;
 532         client_adjust_max_dirty(cli);
 533         spin_unlock(&cli->cl_loi_list_lock);
 534
 535         LPROCFS_CLIMP_EXIT(dev);
 536         return count;
 537 }
 538 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 539
 540 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 541 {
 542         struct obd_device *dev = m->private;
 543         struct client_obd *cli = &dev->u.cli;
 544         long pages;
 545         int mb;
 546
 547         pages = atomic_long_read(&cli->cl_unstable_count);
 548         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 549
 550         return seq_printf(m, "unstable_pages: %20ld\n"
 551                           "unstable_mb:              %10d\n",
 552                         pages, mb);
 553 }
 554 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 555
 556 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 557 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 558 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 559 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 560 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 561 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 562 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 563 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 564 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 565 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 566 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 567 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 568
 569 LPROC_SEQ_FOPS_WO_TYPE(osc, ping);
 570
 571 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 572 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 573
 574 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 575         { .name =       "uuid",
 576           .fops =       &osc_uuid_fops                  },
 577         { .name =       "ping",
 578           .fops =       &osc_ping_fops,
 579           .proc_mode =  0222                            },
 580         { .name =       "connect_flags",
 581           .fops =       &osc_connect_flags_fops         },
 582         { .name =       "blocksize",
 583           .fops =       &osc_blksize_fops               },
 584         { .name =       "kbytestotal",
 585           .fops =       &osc_kbytestotal_fops           },
 586         { .name =       "kbytesfree",
 587           .fops =       &osc_kbytesfree_fops            },
 588         { .name =       "kbytesavail",
 589           .fops =       &osc_kbytesavail_fops           },
 590         { .name =       "filestotal",
 591           .fops =       &osc_filestotal_fops            },
 592         { .name =       "filesfree",
 593           .fops =       &osc_filesfree_fops             },
 594         { .name =       "ost_server_uuid",
 595           .fops =       &osc_server_uuid_fops           },
 596         { .name =       "ost_conn_uuid",
 597           .fops =       &osc_conn_uuid_fops             },
 598         { .name =       "active",
 599           .fops =       &osc_active_fops                },
 600         { .name =       "max_pages_per_rpc",
 601           .fops =       &osc_obd_max_pages_per_rpc_fops },
 602         { .name =       "max_rpcs_in_flight",
 603           .fops =       &osc_max_rpcs_in_flight_fops    },
 604         { .name =       "destroys_in_flight",
 605           .fops =       &osc_destroys_in_flight_fops    },
 606         { .name =       "max_dirty_mb",
 607           .fops =       &osc_max_dirty_mb_fops          },
 608         { .name =       "osc_cached_mb",
 609           .fops =       &osc_cached_mb_fops             },
 610         { .name =       "cur_dirty_bytes",
 611           .fops =       &osc_cur_dirty_bytes_fops       },
 612         { .name =       "cur_grant_bytes",
 613           .fops =       &osc_cur_grant_bytes_fops       },
 614         { .name =       "cur_lost_grant_bytes",
 615           .fops =       &osc_cur_lost_grant_bytes_fops  },
 616         { .name =       "grant_shrink_interval",
 617           .fops =       &osc_grant_shrink_interval_fops },
 618         { .name =       "checksums",
 619           .fops =       &osc_checksum_fops              },
 620         { .name =       "checksum_type",
 621           .fops =       &osc_checksum_type_fops         },
 622         { .name =       "resend_count",
 623           .fops =       &osc_resend_count_fops          },
 624         { .name =       "timeouts",
 625           .fops =       &osc_timeouts_fops              },
 626         { .name =       "contention_seconds",
 627           .fops =       &osc_contention_seconds_fops    },
 628         { .name =       "lockless_truncate",
 629           .fops =       &osc_lockless_truncate_fops     },
 630         { .name =       "import",
 631           .fops =       &osc_import_fops                },
 632         { .name =       "state",
 633           .fops =       &osc_state_fops                 },
 634         { .name =       "pinger_recov",
 635           .fops =       &osc_pinger_recov_fops          },
 636         { .name =       "unstable_stats",
 637           .fops =       &osc_unstable_stats_fops        },
 638         { NULL }
 639 };
 640
 641 #define pct(a,b) (b ? a * 100 / b : 0)
 642
 643 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 644 {
 645         struct timeval now;
 646         struct obd_device *dev = seq->private;
 647         struct client_obd *cli = &dev->u.cli;
 648         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 649         int i;
 650
 651         do_gettimeofday(&now);
 652
 653         spin_lock(&cli->cl_loi_list_lock);
 654
 655         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 656                    now.tv_sec, now.tv_usec);
 657         seq_printf(seq, "read RPCs in flight:  %d\n",
 658                    cli->cl_r_in_flight);
 659         seq_printf(seq, "write RPCs in flight: %d\n",
 660                    cli->cl_w_in_flight);
 661         seq_printf(seq, "pending write pages:  %d\n",
 662                    atomic_read(&cli->cl_pending_w_pages));
 663         seq_printf(seq, "pending read pages:   %d\n",
 664                    atomic_read(&cli->cl_pending_r_pages));
 665
 666         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 667         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 668         seq_printf(seq, "       rpcs   %% cum %%\n");
 669
 670         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 671         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 672
 673         read_cum = 0;
 674         write_cum = 0;
 675         for (i = 0; i < OBD_HIST_MAX; i++) {
 676                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 677                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 678
 679                 read_cum += r;
 680                 write_cum += w;
 681                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 682                            1 << i, r, pct(r, read_tot),
 683                            pct(read_cum, read_tot), w,
 684                            pct(w, write_tot),
 685                            pct(write_cum, write_tot));
 686                 if (read_cum == read_tot && write_cum == write_tot)
 687                         break;
 688         }
 689
 690         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 691         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 692         seq_printf(seq, "       rpcs   %% cum %%\n");
 693
 694         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 695         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 696
 697         read_cum = 0;
 698         write_cum = 0;
 699         for (i = 0; i < OBD_HIST_MAX; i++) {
 700                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 701                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 702                 read_cum += r;
 703                 write_cum += w;
 704                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 705                                  i, r, pct(r, read_tot),
 706                                  pct(read_cum, read_tot), w,
 707                                  pct(w, write_tot),
 708                                  pct(write_cum, write_tot));
 709                 if (read_cum == read_tot && write_cum == write_tot)
 710                         break;
 711         }
 712
 713         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 714         seq_printf(seq, "offset                rpcs   %% cum %% |");
 715         seq_printf(seq, "       rpcs   %% cum %%\n");
 716
 717         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 718         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 719
 720         read_cum = 0;
 721         write_cum = 0;
 722         for (i = 0; i < OBD_HIST_MAX; i++) {
 723                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 724                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 725                 read_cum += r;
 726                 write_cum += w;
 727                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 728                            (i == 0) ? 0 : 1 << (i - 1),
 729                            r, pct(r, read_tot), pct(read_cum, read_tot),
 730                            w, pct(w, write_tot), pct(write_cum, write_tot));
 731                 if (read_cum == read_tot && write_cum == write_tot)
 732                         break;
 733         }
 734
 735         spin_unlock(&cli->cl_loi_list_lock);
 736
 737         return 0;
 738 }
 739 #undef pct
 740
 741 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 742                                        const char __user *buf,
 743                                        size_t len, loff_t *off)
 744 {
 745         struct seq_file *seq = file->private_data;
 746         struct obd_device *dev = seq->private;
 747         struct client_obd *cli = &dev->u.cli;
 748
 749         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 750         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 751         lprocfs_oh_clear(&cli->cl_read_page_hist);
 752         lprocfs_oh_clear(&cli->cl_write_page_hist);
 753         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 754         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 755
 756         return len;
 757 }
 758 LPROC_SEQ_FOPS(osc_rpc_stats);
 759
 760 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 761 {
 762         struct timeval now;
 763         struct obd_device *dev = seq->private;
 764         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 765
 766         do_gettimeofday(&now);
 767
 768         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 769                    now.tv_sec, now.tv_usec);
 770         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 771                    stats->os_lockless_writes);
 772         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 773                    stats->os_lockless_reads);
 774         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 775                    stats->os_lockless_truncates);
 776         return 0;
 777 }
 778
 779 static ssize_t osc_stats_seq_write(struct file *file,
 780                                    const char __user *buf,
 781                                    size_t len, loff_t *off)
 782 {
 783         struct seq_file *seq = file->private_data;
 784         struct obd_device *dev = seq->private;
 785         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 786
 787         memset(stats, 0, sizeof(*stats));
 788         return len;
 789 }
 790
 791 LPROC_SEQ_FOPS(osc_stats);
 792
 793 int lproc_osc_attach_seqstat(struct obd_device *dev)
 794 {
 795         int rc;
 796
 797         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 798                                 &osc_stats_fops, dev);
 799         if (rc == 0)
 800                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 801                                             &osc_rpc_stats_fops, dev);
 802
 803         return rc;
 804 }
 805 #endif /* CONFIG_PROC_FS */