lustre/osc/lproc_osc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  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_rd_active(char *page, char **start, off_t off,
  48                          int count, int *eof, void *data)
  49 {
  50         struct obd_device *dev = data;
  51         int rc;
  52
  53         LPROCFS_CLIMP_CHECK(dev);
  54         rc = snprintf(page, count, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  55         LPROCFS_CLIMP_EXIT(dev);
  56         return rc;
  57 }
  58
  59 static int osc_wr_active(struct file *file, const char *buffer,
  60                          unsigned long count, void *data)
  61 {
  62         struct obd_device *dev = data;
  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         LPROCFS_CLIMP_CHECK(dev);
  72         /* opposite senses */
  73         if (dev->u.cli.cl_import->imp_deactive == val)
  74                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  75         else
  76                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  77
  78         LPROCFS_CLIMP_EXIT(dev);
  79         return count;
  80 }
  81
  82 static int osc_rd_max_pages_per_rpc(char *page, char **start, off_t off,
  83                                     int count, int *eof, void *data)
  84 {
  85         struct obd_device *dev = data;
  86         struct client_obd *cli = &dev->u.cli;
  87         int rc;
  88
  89         client_obd_list_lock(&cli->cl_loi_list_lock);
  90         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
  91         client_obd_list_unlock(&cli->cl_loi_list_lock);
  92         return rc;
  93 }
  94
  95 static int osc_wr_max_pages_per_rpc(struct file *file, const char *buffer,
  96                                     unsigned long count, void *data)
  97 {
  98         struct obd_device *dev = data;
  99         struct client_obd *cli = &dev->u.cli;
 100         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 101         int val, rc;
 102
 103         rc = lprocfs_write_helper(buffer, count, &val);
 104         if (rc)
 105                 return rc;
 106
 107         LPROCFS_CLIMP_CHECK(dev);
 108         if (val < 1 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
 109                 LPROCFS_CLIMP_EXIT(dev);
 110                 return -ERANGE;
 111         }
 112         client_obd_list_lock(&cli->cl_loi_list_lock);
 113         cli->cl_max_pages_per_rpc = val;
 114         client_obd_list_unlock(&cli->cl_loi_list_lock);
 115
 116         LPROCFS_CLIMP_EXIT(dev);
 117         return count;
 118 }
 119
 120 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
 121                                      int count, int *eof, void *data)
 122 {
 123         struct obd_device *dev = data;
 124         struct client_obd *cli = &dev->u.cli;
 125         int rc;
 126
 127         client_obd_list_lock(&cli->cl_loi_list_lock);
 128         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
 129         client_obd_list_unlock(&cli->cl_loi_list_lock);
 130         return rc;
 131 }
 132
 133 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
 134                                      unsigned long count, void *data)
 135 {
 136         struct obd_device *dev = data;
 137         struct client_obd *cli = &dev->u.cli;
 138         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 139         int val, rc;
 140
 141         rc = lprocfs_write_helper(buffer, count, &val);
 142         if (rc)
 143                 return rc;
 144
 145         if (val < 1 || val > OSC_MAX_RIF_MAX)
 146                 return -ERANGE;
 147
 148         LPROCFS_CLIMP_CHECK(dev);
 149         if (pool && val > cli->cl_max_rpcs_in_flight)
 150                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 151
 152         client_obd_list_lock(&cli->cl_loi_list_lock);
 153         cli->cl_max_rpcs_in_flight = val;
 154         client_obd_list_unlock(&cli->cl_loi_list_lock);
 155
 156         LPROCFS_CLIMP_EXIT(dev);
 157         return count;
 158 }
 159
 160 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 161                                int *eof, void *data)
 162 {
 163         struct obd_device *dev = data;
 164         struct client_obd *cli = &dev->u.cli;
 165         long val;
 166         int mult;
 167
 168         client_obd_list_lock(&cli->cl_loi_list_lock);
 169         val = cli->cl_dirty_max;
 170         client_obd_list_unlock(&cli->cl_loi_list_lock);
 171
 172         mult = 1 << 20;
 173         return lprocfs_read_frac_helper(page, count, val, mult);
 174 }
 175
 176 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 177                                unsigned long count, void *data)
 178 {
 179         struct obd_device *dev = data;
 180         struct client_obd *cli = &dev->u.cli;
 181         int pages_number, mult, rc;
 182
 183         mult = 1 << (20 - CFS_PAGE_SHIFT);
 184         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 185         if (rc)
 186                 return rc;
 187
 188         if (pages_number < 0 ||
 189             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 190             pages_number > cfs_num_physpages / 4) /* 1/4 of RAM */
 191                 return -ERANGE;
 192
 193         client_obd_list_lock(&cli->cl_loi_list_lock);
 194         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 195         osc_wake_cache_waiters(cli);
 196         client_obd_list_unlock(&cli->cl_loi_list_lock);
 197
 198         return count;
 199 }
 200
 201 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 202                                   int count, int *eof, void *data)
 203 {
 204         struct obd_device *dev = data;
 205         struct client_obd *cli = &dev->u.cli;
 206         int rc;
 207
 208         client_obd_list_lock(&cli->cl_loi_list_lock);
 209         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 210         client_obd_list_unlock(&cli->cl_loi_list_lock);
 211         return rc;
 212 }
 213
 214 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 215                                   int count, int *eof, void *data)
 216 {
 217         struct obd_device *dev = data;
 218         struct client_obd *cli = &dev->u.cli;
 219         int rc;
 220
 221         client_obd_list_lock(&cli->cl_loi_list_lock);
 222         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 223         client_obd_list_unlock(&cli->cl_loi_list_lock);
 224         return rc;
 225 }
 226
 227 static int osc_wr_cur_grant_bytes(struct file *file, const char *buffer,
 228                                   unsigned long count, void *data)
 229 {
 230         struct obd_device *obd = data;
 231         struct client_obd *cli = &obd->u.cli;
 232         int                rc;
 233         __u64              val;
 234
 235         if (obd == NULL)
 236                 return 0;
 237
 238         rc = lprocfs_write_u64_helper(buffer, count, &val);
 239         if (rc)
 240                 return rc;
 241
 242         /* this is only for shrinking grant */
 243         client_obd_list_lock(&cli->cl_loi_list_lock);
 244         if (val >= cli->cl_avail_grant) {
 245                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 246                 return 0;
 247         }
 248         client_obd_list_unlock(&cli->cl_loi_list_lock);
 249
 250         LPROCFS_CLIMP_CHECK(obd);
 251         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 252                 rc = osc_shrink_grant_to_target(cli, val);
 253         LPROCFS_CLIMP_EXIT(obd);
 254         if (rc)
 255                 return rc;
 256         return count;
 257 }
 258
 259 static int osc_rd_cur_lost_grant_bytes(char *page, char **start, off_t off,
 260                                        int count, int *eof, void *data)
 261 {
 262         struct obd_device *dev = data;
 263         struct client_obd *cli = &dev->u.cli;
 264         int rc;
 265
 266         client_obd_list_lock(&cli->cl_loi_list_lock);
 267         rc = snprintf(page, count, "%lu\n", cli->cl_lost_grant);
 268         client_obd_list_unlock(&cli->cl_loi_list_lock);
 269         return rc;
 270 }
 271
 272 static int osc_rd_grant_shrink_interval(char *page, char **start, off_t off,
 273                                         int count, int *eof, void *data)
 274 {
 275         struct obd_device *obd = data;
 276
 277         if (obd == NULL)
 278                 return 0;
 279         return snprintf(page, count, "%d\n",
 280                         obd->u.cli.cl_grant_shrink_interval);
 281 }
 282
 283 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 284                                         unsigned long count, void *data)
 285 {
 286         struct obd_device *obd = data;
 287         int val, rc;
 288
 289         if (obd == NULL)
 290                 return 0;
 291
 292         rc = lprocfs_write_helper(buffer, count, &val);
 293         if (rc)
 294                 return rc;
 295
 296         if (val <= 0)
 297                 return -ERANGE;
 298
 299         obd->u.cli.cl_grant_shrink_interval = val;
 300
 301         return count;
 302 }
 303
 304 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 305                                int *eof, void *data)
 306 {
 307         struct obd_device *obd = data;
 308
 309         if (obd == NULL)
 310                 return 0;
 311
 312         return snprintf(page, count, "%d\n",
 313                         obd->u.cli.cl_oscc.oscc_grow_count);
 314 }
 315
 316 /**
 317  * Set OSC creator's osc_creator::oscc_grow_count
 318  *
 319  * \param file   proc file
 320  * \param buffer buffer containing the value
 321  * \param count  buffer size
 322  * \param data   obd device
 323  *
 324  * \retval \a count
 325  */
 326 static int osc_wr_create_count(struct file *file, const char *buffer,
 327                                unsigned long count, void *data)
 328 {
 329         struct obd_device *obd = data;
 330         int val, rc, i;
 331
 332         if (obd == NULL)
 333                 return 0;
 334
 335         rc = lprocfs_write_helper(buffer, count, &val);
 336         if (rc)
 337                 return rc;
 338
 339         /* The MDT ALWAYS needs to limit the precreate count to
 340          * OST_MAX_PRECREATE, and the constant cannot be changed
 341          * because it is a value shared between the OSC and OST
 342          * that is the maximum possible number of objects that will
 343          * ever be handled by MDT->OST recovery processing.
 344          *
 345          * If the OST ever gets a request to delete more orphans,
 346          * this implies that something has gone badly on the MDT
 347          * and the OST will refuse to delete so much data from the
 348          * filesystem as a safety measure. */
 349         if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
 350                 return -ERANGE;
 351         if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
 352                 return -ERANGE;
 353
 354         for (i = 1; (i << 1) <= val; i <<= 1)
 355                 ;
 356         obd->u.cli.cl_oscc.oscc_grow_count = i;
 357
 358         return count;
 359 }
 360
 361 /**
 362  * Read OSC creator's osc_creator::oscc_max_grow_count
 363  *
 364  * \param page       buffer to hold the returning string
 365  * \param start
 366  * \param off
 367  * \param count
 368  * \param eof
 369  *              proc read function parameters, please refer to kernel
 370  *              code fs/proc/generic.c proc_file_read()
 371  * \param data   obd device
 372  *
 373  * \retval number of characters printed.
 374  */
 375 static int osc_rd_max_create_count(char *page, char **start, off_t off,
 376                                    int count, int *eof, void *data)
 377 {
 378         struct obd_device *obd = data;
 379
 380         if (obd == NULL)
 381                 return 0;
 382
 383         return snprintf(page, count, "%d\n",
 384                         obd->u.cli.cl_oscc.oscc_max_grow_count);
 385 }
 386
 387 /**
 388  * Set OSC creator's osc_creator::oscc_max_grow_count
 389  *
 390  * \param file   proc file
 391  * \param buffer buffer containing the value
 392  * \param count  buffer size
 393  * \param data   obd device
 394  *
 395  * \retval \a count
 396  */
 397 static int osc_wr_max_create_count(struct file *file, const char *buffer,
 398                                    unsigned long count, void *data)
 399 {
 400         struct obd_device *obd = data;
 401         int val, rc;
 402
 403         if (obd == NULL)
 404                 return 0;
 405
 406         rc = lprocfs_write_helper(buffer, count, &val);
 407         if (rc)
 408                 return rc;
 409
 410         if (val < 0)
 411                 return -ERANGE;
 412         if (val > OST_MAX_PRECREATE)
 413                 return -ERANGE;
 414
 415         if (obd->u.cli.cl_oscc.oscc_grow_count > val)
 416                 obd->u.cli.cl_oscc.oscc_grow_count = val;
 417
 418         obd->u.cli.cl_oscc.oscc_max_grow_count = val;
 419
 420         return count;
 421 }
 422
 423 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 424                                    int count, int *eof, void *data)
 425 {
 426         struct obd_device *obd = data;
 427
 428         if (obd == NULL)
 429                 return 0;
 430
 431         return snprintf(page, count, LPU64"\n",
 432                         obd->u.cli.cl_oscc.oscc_next_id);
 433 }
 434
 435 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 436                                    int count, int *eof, void *data)
 437 {
 438         struct obd_device *obd = data;
 439
 440         if (obd == NULL)
 441                 return 0;
 442
 443         return snprintf(page, count, LPU64"\n",
 444                         obd->u.cli.cl_oscc.oscc_last_id);
 445 }
 446
 447 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 448                            int *eof, void *data)
 449 {
 450         struct obd_device *obd = data;
 451
 452         if (obd == NULL)
 453                 return 0;
 454
 455         return snprintf(page, count, "%d\n",
 456                         obd->u.cli.cl_checksum ? 1 : 0);
 457 }
 458
 459 static int osc_wr_checksum(struct file *file, const char *buffer,
 460                            unsigned long count, void *data)
 461 {
 462         struct obd_device *obd = data;
 463         int val, rc;
 464
 465         if (obd == NULL)
 466                 return 0;
 467
 468         rc = lprocfs_write_helper(buffer, count, &val);
 469         if (rc)
 470                 return rc;
 471
 472         obd->u.cli.cl_checksum = (val ? 1 : 0);
 473
 474         return count;
 475 }
 476
 477 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 478                                 int *eof, void *data)
 479 {
 480         struct obd_device *obd = data;
 481         int i, len =0;
 482         DECLARE_CKSUM_NAME;
 483
 484         if (obd == NULL)
 485                 return 0;
 486
 487         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 488                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 489                         continue;
 490                 if (obd->u.cli.cl_cksum_type == (1 << i))
 491                         len += snprintf(page + len, count - len, "[%s] ",
 492                                         cksum_name[i]);
 493                 else
 494                         len += snprintf(page + len, count - len, "%s ",
 495                                         cksum_name[i]);
 496         }
 497         if (len < count)
 498                 len += sprintf(page + len, "\n");
 499         return len;
 500 }
 501
 502 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 503                                 unsigned long count, void *data)
 504 {
 505         struct obd_device *obd = data;
 506         int i;
 507         DECLARE_CKSUM_NAME;
 508         char kernbuf[10];
 509
 510         if (obd == NULL)
 511                 return 0;
 512
 513         if (count > sizeof(kernbuf) - 1)
 514                 return -EINVAL;
 515         if (cfs_copy_from_user(kernbuf, buffer, count))
 516                 return -EFAULT;
 517         if (count > 0 && kernbuf[count - 1] == '\n')
 518                 kernbuf[count - 1] = '\0';
 519         else
 520                 kernbuf[count] = '\0';
 521
 522         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 523                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 524                         continue;
 525                 if (!strcmp(kernbuf, cksum_name[i])) {
 526                        obd->u.cli.cl_cksum_type = 1 << i;
 527                        return count;
 528                 }
 529         }
 530         return -EINVAL;
 531 }
 532
 533 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 534                                int *eof, void *data)
 535 {
 536         struct obd_device *obd = data;
 537
 538         return snprintf(page, count, "%u\n",
 539                         cfs_atomic_read(&obd->u.cli.cl_resends));
 540 }
 541
 542 static int osc_wr_resend_count(struct file *file, const char *buffer,
 543                                unsigned long count, void *data)
 544 {
 545         struct obd_device *obd = data;
 546         int val, rc;
 547
 548         rc = lprocfs_write_helper(buffer, count, &val);
 549         if (rc)
 550                 return rc;
 551
 552         if (val < 0)
 553                return -EINVAL;
 554
 555         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 556
 557         return count;
 558 }
 559
 560 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 561                                      int count, int *eof, void *data)
 562 {
 563         struct obd_device *obd = data;
 564         struct osc_device *od  = obd2osc_dev(obd);
 565
 566         return snprintf(page, count, "%u\n", od->od_contention_time);
 567 }
 568
 569 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 570                                      unsigned long count, void *data)
 571 {
 572         struct obd_device *obd = data;
 573         struct osc_device *od  = obd2osc_dev(obd);
 574
 575         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 576                 count;
 577 }
 578
 579 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 580                                     int count, int *eof, void *data)
 581 {
 582         struct obd_device *obd = data;
 583         struct osc_device *od  = obd2osc_dev(obd);
 584
 585         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 586 }
 587
 588 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 589                                     unsigned long count, void *data)
 590 {
 591         struct obd_device *obd = data;
 592         struct osc_device *od  = obd2osc_dev(obd);
 593
 594         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 595                 count;
 596 }
 597
 598 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 599                                      int count, int *eof, void *data)
 600 {
 601         struct obd_device *obd = data;
 602         return snprintf(page, count, "%u\n",
 603                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 604 }
 605
 606 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 607         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 608         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 609         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 610         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 611         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 612         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 613         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 614         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 615         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 616         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 617         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 618         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 619         { "active",          osc_rd_active,
 620                              osc_wr_active, 0 },
 621         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 622                                osc_wr_max_pages_per_rpc, 0 },
 623         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 624                                 osc_wr_max_rpcs_in_flight, 0 },
 625         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 626         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 627         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 628         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 629                              osc_wr_cur_grant_bytes, 0 },
 630         { "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
 631         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 632                                    osc_wr_grant_shrink_interval, 0 },
 633         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 634         { "max_create_count", osc_rd_max_create_count,
 635                               osc_wr_max_create_count, 0},
 636         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 637         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 638         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 639         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 640         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 641         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 642         { "contention_seconds", osc_rd_contention_seconds,
 643                                 osc_wr_contention_seconds, 0 },
 644         { "lockless_truncate",  osc_rd_lockless_truncate,
 645                                 osc_wr_lockless_truncate, 0 },
 646         { "import",          lprocfs_rd_import,        0, 0 },
 647         { "state",           lprocfs_rd_state,         0, 0 },
 648         { 0 }
 649 };
 650
 651 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 652         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 653         { 0 }
 654 };
 655
 656 #define pct(a,b) (b ? a * 100 / b : 0)
 657
 658 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 659 {
 660         struct timeval now;
 661         struct obd_device *dev = seq->private;
 662         struct client_obd *cli = &dev->u.cli;
 663         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 664         int i;
 665
 666         cfs_gettimeofday(&now);
 667
 668         client_obd_list_lock(&cli->cl_loi_list_lock);
 669
 670         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 671                    now.tv_sec, now.tv_usec);
 672         seq_printf(seq, "read RPCs in flight:  %d\n",
 673                    cli->cl_r_in_flight);
 674         seq_printf(seq, "write RPCs in flight: %d\n",
 675                    cli->cl_w_in_flight);
 676         seq_printf(seq, "pending write pages:  %d\n",
 677                    cli->cl_pending_w_pages);
 678         seq_printf(seq, "pending read pages:   %d\n",
 679                    cli->cl_pending_r_pages);
 680
 681         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 682         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 683         seq_printf(seq, "       rpcs   %% cum %%\n");
 684
 685         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 686         write_tot = lprocfs_oh_sum(&cli->cl_write_page_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_page_hist.oh_buckets[i];
 692                 unsigned long w = cli->cl_write_page_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                                  1 << 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, "rpcs in flight        rpcs   %% cum %% |");
 706         seq_printf(seq, "       rpcs   %% cum %%\n");
 707
 708         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 709         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_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_rpc_hist.oh_buckets[i];
 715                 unsigned long w = cli->cl_write_rpc_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, r, pct(r, read_tot),
 720                                  pct(read_cum, read_tot), w,
 721                                  pct(w, write_tot),
 722                                  pct(write_cum, write_tot));
 723                 if (read_cum == read_tot && write_cum == write_tot)
 724                         break;
 725         }
 726
 727         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 728         seq_printf(seq, "offset                rpcs   %% cum %% |");
 729         seq_printf(seq, "       rpcs   %% cum %%\n");
 730
 731         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 732         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 733
 734         read_cum = 0;
 735         write_cum = 0;
 736         for (i = 0; i < OBD_HIST_MAX; i++) {
 737                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 738                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 739                 read_cum += r;
 740                 write_cum += w;
 741                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 742                            (i == 0) ? 0 : 1 << (i - 1),
 743                            r, pct(r, read_tot), pct(read_cum, read_tot),
 744                            w, pct(w, write_tot), pct(write_cum, write_tot));
 745                 if (read_cum == read_tot && write_cum == write_tot)
 746                         break;
 747         }
 748
 749         client_obd_list_unlock(&cli->cl_loi_list_lock);
 750
 751         return 0;
 752 }
 753 #undef pct
 754
 755 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 756                                        size_t len, loff_t *off)
 757 {
 758         struct seq_file *seq = file->private_data;
 759         struct obd_device *dev = seq->private;
 760         struct client_obd *cli = &dev->u.cli;
 761
 762         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 763         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 764         lprocfs_oh_clear(&cli->cl_read_page_hist);
 765         lprocfs_oh_clear(&cli->cl_write_page_hist);
 766         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 767         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 768
 769         return len;
 770 }
 771
 772 LPROC_SEQ_FOPS(osc_rpc_stats);
 773
 774 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 775 {
 776         struct timeval now;
 777         struct obd_device *dev = seq->private;
 778         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 779
 780         cfs_gettimeofday(&now);
 781
 782         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 783                    now.tv_sec, now.tv_usec);
 784         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 785                    stats->os_lockless_writes);
 786         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 787                    stats->os_lockless_reads);
 788         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 789                    stats->os_lockless_truncates);
 790         return 0;
 791 }
 792
 793 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 794                                    size_t len, loff_t *off)
 795 {
 796         struct seq_file *seq = file->private_data;
 797         struct obd_device *dev = seq->private;
 798         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 799
 800         memset(stats, 0, sizeof(*stats));
 801         return len;
 802 }
 803
 804 LPROC_SEQ_FOPS(osc_stats);
 805
 806 int lproc_osc_attach_seqstat(struct obd_device *dev)
 807 {
 808         int rc;
 809
 810         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0444,
 811                                 &osc_stats_fops, dev);
 812         if (rc == 0)
 813                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 814                                             &osc_rpc_stats_fops, dev);
 815         return rc;
 816 }
 817
 818 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 819 {
 820         lvars->module_vars = lprocfs_osc_module_vars;
 821         lvars->obd_vars    = lprocfs_osc_obd_vars;
 822 }
 823 #endif /* LPROCFS */