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, Whamcloud, Inc.
  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_rpcs_in_flight(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, "%u\n", cli->cl_max_rpcs_in_flight);
  91         client_obd_list_unlock(&cli->cl_loi_list_lock);
  92         return rc;
  93 }
  94
  95 static int osc_wr_max_rpcs_in_flight(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 ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 101         int val, rc;
 102
 103         rc = lprocfs_write_helper(buffer, count, &val);
 104         if (rc)
 105                 return rc;
 106
 107         if (val < 1 || val > OSC_MAX_RIF_MAX)
 108                 return -ERANGE;
 109
 110         LPROCFS_CLIMP_CHECK(dev);
 111         if (pool && val > cli->cl_max_rpcs_in_flight)
 112                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 113
 114         client_obd_list_lock(&cli->cl_loi_list_lock);
 115         cli->cl_max_rpcs_in_flight = val;
 116         client_obd_list_unlock(&cli->cl_loi_list_lock);
 117
 118         LPROCFS_CLIMP_EXIT(dev);
 119         return count;
 120 }
 121
 122 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 123                                int *eof, void *data)
 124 {
 125         struct obd_device *dev = data;
 126         struct client_obd *cli = &dev->u.cli;
 127         long val;
 128         int mult;
 129
 130         client_obd_list_lock(&cli->cl_loi_list_lock);
 131         val = cli->cl_dirty_max;
 132         client_obd_list_unlock(&cli->cl_loi_list_lock);
 133
 134         mult = 1 << 20;
 135         return lprocfs_read_frac_helper(page, count, val, mult);
 136 }
 137
 138 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 139                                unsigned long count, void *data)
 140 {
 141         struct obd_device *dev = data;
 142         struct client_obd *cli = &dev->u.cli;
 143         int pages_number, mult, rc;
 144
 145         mult = 1 << (20 - CFS_PAGE_SHIFT);
 146         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 147         if (rc)
 148                 return rc;
 149
 150         if (pages_number < 0 ||
 151             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 152             pages_number > cfs_num_physpages / 4) /* 1/4 of RAM */
 153                 return -ERANGE;
 154
 155         client_obd_list_lock(&cli->cl_loi_list_lock);
 156         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 157         osc_wake_cache_waiters(cli);
 158         client_obd_list_unlock(&cli->cl_loi_list_lock);
 159
 160         return count;
 161 }
 162
 163 static int osc_rd_cached_mb(char *page, char **start, off_t off, int count,
 164                             int *eof, void *data)
 165 {
 166         struct obd_device *dev = data;
 167         struct client_obd *cli = &dev->u.cli;
 168         int shift = 20 - CFS_PAGE_SHIFT;
 169         int rc;
 170
 171         rc = snprintf(page, count,
 172                       "used_mb: %d\n"
 173                       "busy_cnt: %d\n",
 174                       (cfs_atomic_read(&cli->cl_lru_in_list) +
 175                         cfs_atomic_read(&cli->cl_lru_busy)) >> shift,
 176                       cfs_atomic_read(&cli->cl_lru_busy));
 177
 178         return rc;
 179 }
 180
 181 /* shrink the number of caching pages to a specific number */
 182 static int osc_wr_cached_mb(struct file *file, const char *buffer,
 183                             unsigned long count, void *data)
 184 {
 185         struct obd_device *dev = data;
 186         struct client_obd *cli = &dev->u.cli;
 187         int pages_number, mult, rc;
 188
 189         mult = 1 << (20 - CFS_PAGE_SHIFT);
 190         buffer = lprocfs_find_named_value(buffer, "used_mb:", &count);
 191         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 192         if (rc)
 193                 return rc;
 194
 195         if (pages_number < 0)
 196                 return -ERANGE;
 197
 198         rc = cfs_atomic_read(&cli->cl_lru_in_list) - pages_number;
 199         if (rc > 0)
 200                 (void)osc_lru_shrink(cli, rc);
 201
 202         return count;
 203 }
 204
 205 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 206                                   int count, int *eof, void *data)
 207 {
 208         struct obd_device *dev = data;
 209         struct client_obd *cli = &dev->u.cli;
 210         int rc;
 211
 212         client_obd_list_lock(&cli->cl_loi_list_lock);
 213         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 214         client_obd_list_unlock(&cli->cl_loi_list_lock);
 215         return rc;
 216 }
 217
 218 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 219                                   int count, int *eof, void *data)
 220 {
 221         struct obd_device *dev = data;
 222         struct client_obd *cli = &dev->u.cli;
 223         int rc;
 224
 225         client_obd_list_lock(&cli->cl_loi_list_lock);
 226         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 227         client_obd_list_unlock(&cli->cl_loi_list_lock);
 228         return rc;
 229 }
 230
 231 static int osc_wr_cur_grant_bytes(struct file *file, const char *buffer,
 232                                   unsigned long count, void *data)
 233 {
 234         struct obd_device *obd = data;
 235         struct client_obd *cli = &obd->u.cli;
 236         int                rc;
 237         __u64              val;
 238
 239         if (obd == NULL)
 240                 return 0;
 241
 242         rc = lprocfs_write_u64_helper(buffer, count, &val);
 243         if (rc)
 244                 return rc;
 245
 246         /* this is only for shrinking grant */
 247         client_obd_list_lock(&cli->cl_loi_list_lock);
 248         if (val >= cli->cl_avail_grant) {
 249                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 250                 return 0;
 251         }
 252         client_obd_list_unlock(&cli->cl_loi_list_lock);
 253
 254         LPROCFS_CLIMP_CHECK(obd);
 255         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 256                 rc = osc_shrink_grant_to_target(cli, val);
 257         LPROCFS_CLIMP_EXIT(obd);
 258         if (rc)
 259                 return rc;
 260         return count;
 261 }
 262
 263 static int osc_rd_cur_lost_grant_bytes(char *page, char **start, off_t off,
 264                                        int count, int *eof, void *data)
 265 {
 266         struct obd_device *dev = data;
 267         struct client_obd *cli = &dev->u.cli;
 268         int rc;
 269
 270         client_obd_list_lock(&cli->cl_loi_list_lock);
 271         rc = snprintf(page, count, "%lu\n", cli->cl_lost_grant);
 272         client_obd_list_unlock(&cli->cl_loi_list_lock);
 273         return rc;
 274 }
 275
 276 static int osc_rd_grant_shrink_interval(char *page, char **start, off_t off,
 277                                         int count, int *eof, void *data)
 278 {
 279         struct obd_device *obd = data;
 280
 281         if (obd == NULL)
 282                 return 0;
 283         return snprintf(page, count, "%d\n",
 284                         obd->u.cli.cl_grant_shrink_interval);
 285 }
 286
 287 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 288                                         unsigned long count, void *data)
 289 {
 290         struct obd_device *obd = data;
 291         int val, rc;
 292
 293         if (obd == NULL)
 294                 return 0;
 295
 296         rc = lprocfs_write_helper(buffer, count, &val);
 297         if (rc)
 298                 return rc;
 299
 300         if (val <= 0)
 301                 return -ERANGE;
 302
 303         obd->u.cli.cl_grant_shrink_interval = val;
 304
 305         return count;
 306 }
 307
 308 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 309                                int *eof, void *data)
 310 {
 311         struct obd_device *obd = data;
 312
 313         if (obd == NULL)
 314                 return 0;
 315
 316         return snprintf(page, count, "%d\n",
 317                         obd->u.cli.cl_oscc.oscc_grow_count);
 318 }
 319
 320 /**
 321  * Set OSC creator's osc_creator::oscc_grow_count
 322  *
 323  * \param file   proc file
 324  * \param buffer buffer containing the value
 325  * \param count  buffer size
 326  * \param data   obd device
 327  *
 328  * \retval \a count
 329  */
 330 static int osc_wr_create_count(struct file *file, const char *buffer,
 331                                unsigned long count, void *data)
 332 {
 333         struct obd_device *obd = data;
 334         int val, rc, i;
 335
 336         if (obd == NULL)
 337                 return 0;
 338
 339         rc = lprocfs_write_helper(buffer, count, &val);
 340         if (rc)
 341                 return rc;
 342
 343         /* The MDT ALWAYS needs to limit the precreate count to
 344          * OST_MAX_PRECREATE, and the constant cannot be changed
 345          * because it is a value shared between the OSC and OST
 346          * that is the maximum possible number of objects that will
 347          * ever be handled by MDT->OST recovery processing.
 348          *
 349          * If the OST ever gets a request to delete more orphans,
 350          * this implies that something has gone badly on the MDT
 351          * and the OST will refuse to delete so much data from the
 352          * filesystem as a safety measure. */
 353         if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
 354                 return -ERANGE;
 355         if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
 356                 return -ERANGE;
 357
 358         for (i = 1; (i << 1) <= val; i <<= 1)
 359                 ;
 360         obd->u.cli.cl_oscc.oscc_grow_count = i;
 361
 362         return count;
 363 }
 364
 365 /**
 366  * Read OSC creator's osc_creator::oscc_max_grow_count
 367  *
 368  * \param page       buffer to hold the returning string
 369  * \param start
 370  * \param off
 371  * \param count
 372  * \param eof
 373  *              proc read function parameters, please refer to kernel
 374  *              code fs/proc/generic.c proc_file_read()
 375  * \param data   obd device
 376  *
 377  * \retval number of characters printed.
 378  */
 379 static int osc_rd_max_create_count(char *page, char **start, off_t off,
 380                                    int count, int *eof, void *data)
 381 {
 382         struct obd_device *obd = data;
 383
 384         if (obd == NULL)
 385                 return 0;
 386
 387         return snprintf(page, count, "%d\n",
 388                         obd->u.cli.cl_oscc.oscc_max_grow_count);
 389 }
 390
 391 /**
 392  * Set OSC creator's osc_creator::oscc_max_grow_count
 393  *
 394  * \param file   proc file
 395  * \param buffer buffer containing the value
 396  * \param count  buffer size
 397  * \param data   obd device
 398  *
 399  * \retval \a count
 400  */
 401 static int osc_wr_max_create_count(struct file *file, const char *buffer,
 402                                    unsigned long count, void *data)
 403 {
 404         struct obd_device *obd = data;
 405         int val, rc;
 406
 407         if (obd == NULL)
 408                 return 0;
 409
 410         rc = lprocfs_write_helper(buffer, count, &val);
 411         if (rc)
 412                 return rc;
 413
 414         if (val < 0)
 415                 return -ERANGE;
 416         if (val > OST_MAX_PRECREATE)
 417                 return -ERANGE;
 418
 419         if (obd->u.cli.cl_oscc.oscc_grow_count > val)
 420                 obd->u.cli.cl_oscc.oscc_grow_count = val;
 421
 422         obd->u.cli.cl_oscc.oscc_max_grow_count = val;
 423
 424         return count;
 425 }
 426
 427 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 428                                    int count, int *eof, void *data)
 429 {
 430         struct obd_device *obd = data;
 431
 432         if (obd == NULL)
 433                 return 0;
 434
 435         return snprintf(page, count, LPU64"\n",
 436                         obd->u.cli.cl_oscc.oscc_next_id);
 437 }
 438
 439 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 440                                    int count, int *eof, void *data)
 441 {
 442         struct obd_device *obd = data;
 443
 444         if (obd == NULL)
 445                 return 0;
 446
 447         return snprintf(page, count, LPU64"\n",
 448                         obd->u.cli.cl_oscc.oscc_last_id);
 449 }
 450
 451 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 452                            int *eof, void *data)
 453 {
 454         struct obd_device *obd = data;
 455
 456         if (obd == NULL)
 457                 return 0;
 458
 459         return snprintf(page, count, "%d\n",
 460                         obd->u.cli.cl_checksum ? 1 : 0);
 461 }
 462
 463 static int osc_wr_checksum(struct file *file, const char *buffer,
 464                            unsigned long count, void *data)
 465 {
 466         struct obd_device *obd = data;
 467         int val, rc;
 468
 469         if (obd == NULL)
 470                 return 0;
 471
 472         rc = lprocfs_write_helper(buffer, count, &val);
 473         if (rc)
 474                 return rc;
 475
 476         obd->u.cli.cl_checksum = (val ? 1 : 0);
 477
 478         return count;
 479 }
 480
 481 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 482                                 int *eof, void *data)
 483 {
 484         struct obd_device *obd = data;
 485         int i, len =0;
 486         DECLARE_CKSUM_NAME;
 487
 488         if (obd == NULL)
 489                 return 0;
 490
 491         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 492                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 493                         continue;
 494                 if (obd->u.cli.cl_cksum_type == (1 << i))
 495                         len += snprintf(page + len, count - len, "[%s] ",
 496                                         cksum_name[i]);
 497                 else
 498                         len += snprintf(page + len, count - len, "%s ",
 499                                         cksum_name[i]);
 500         }
 501         if (len < count)
 502                 len += sprintf(page + len, "\n");
 503         return len;
 504 }
 505
 506 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 507                                 unsigned long count, void *data)
 508 {
 509         struct obd_device *obd = data;
 510         int i;
 511         DECLARE_CKSUM_NAME;
 512         char kernbuf[10];
 513
 514         if (obd == NULL)
 515                 return 0;
 516
 517         if (count > sizeof(kernbuf) - 1)
 518                 return -EINVAL;
 519         if (cfs_copy_from_user(kernbuf, buffer, count))
 520                 return -EFAULT;
 521         if (count > 0 && kernbuf[count - 1] == '\n')
 522                 kernbuf[count - 1] = '\0';
 523         else
 524                 kernbuf[count] = '\0';
 525
 526         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 527                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 528                         continue;
 529                 if (!strcmp(kernbuf, cksum_name[i])) {
 530                        obd->u.cli.cl_cksum_type = 1 << i;
 531                        return count;
 532                 }
 533         }
 534         return -EINVAL;
 535 }
 536
 537 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 538                                int *eof, void *data)
 539 {
 540         struct obd_device *obd = data;
 541
 542         return snprintf(page, count, "%u\n",
 543                         cfs_atomic_read(&obd->u.cli.cl_resends));
 544 }
 545
 546 static int osc_wr_resend_count(struct file *file, const char *buffer,
 547                                unsigned long count, void *data)
 548 {
 549         struct obd_device *obd = data;
 550         int val, rc;
 551
 552         rc = lprocfs_write_helper(buffer, count, &val);
 553         if (rc)
 554                 return rc;
 555
 556         if (val < 0)
 557                return -EINVAL;
 558
 559         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 560
 561         return count;
 562 }
 563
 564 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 565                                      int count, int *eof, void *data)
 566 {
 567         struct obd_device *obd = data;
 568         struct osc_device *od  = obd2osc_dev(obd);
 569
 570         return snprintf(page, count, "%u\n", od->od_contention_time);
 571 }
 572
 573 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 574                                      unsigned long count, void *data)
 575 {
 576         struct obd_device *obd = data;
 577         struct osc_device *od  = obd2osc_dev(obd);
 578
 579         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 580                 count;
 581 }
 582
 583 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 584                                     int count, int *eof, void *data)
 585 {
 586         struct obd_device *obd = data;
 587         struct osc_device *od  = obd2osc_dev(obd);
 588
 589         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 590 }
 591
 592 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 593                                     unsigned long count, void *data)
 594 {
 595         struct obd_device *obd = data;
 596         struct osc_device *od  = obd2osc_dev(obd);
 597
 598         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 599                 count;
 600 }
 601
 602 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 603                                      int count, int *eof, void *data)
 604 {
 605         struct obd_device *obd = data;
 606         return snprintf(page, count, "%u\n",
 607                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 608 }
 609
 610 static int lprocfs_osc_wr_max_pages_per_rpc(struct file *file,
 611         const char *buffer, unsigned long count, void *data)
 612 {
 613         struct obd_device *dev = data;
 614         struct client_obd *cli = &dev->u.cli;
 615         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 616         int chunk_mask, val, rc;
 617
 618         rc = lprocfs_write_helper(buffer, count, &val);
 619         if (rc)
 620                 return rc;
 621
 622         LPROCFS_CLIMP_CHECK(dev);
 623
 624         chunk_mask = ~((1 << (cli->cl_chunkbits - CFS_PAGE_SHIFT)) - 1);
 625         /* max_pages_per_rpc must be chunk aligned */
 626         val = (val + ~chunk_mask) & chunk_mask;
 627         if (val == 0 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
 628                 LPROCFS_CLIMP_EXIT(dev);
 629                 return -ERANGE;
 630         }
 631         client_obd_list_lock(&cli->cl_loi_list_lock);
 632         cli->cl_max_pages_per_rpc = val;
 633         client_obd_list_unlock(&cli->cl_loi_list_lock);
 634
 635         LPROCFS_CLIMP_EXIT(dev);
 636         return count;
 637 }
 638
 639 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 640         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 641         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 642         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 643         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 644         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 645         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 646         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 647         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 648         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 649         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 650         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 651         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 652         { "active",          osc_rd_active,
 653                              osc_wr_active, 0 },
 654         { "max_pages_per_rpc", lprocfs_obd_rd_max_pages_per_rpc,
 655                                lprocfs_osc_wr_max_pages_per_rpc, 0 },
 656         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 657                                 osc_wr_max_rpcs_in_flight, 0 },
 658         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 659         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 660         { "osc_cached_mb",   osc_rd_cached_mb,     osc_wr_cached_mb, 0 },
 661         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 662         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 663                              osc_wr_cur_grant_bytes, 0 },
 664         { "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
 665         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 666                                    osc_wr_grant_shrink_interval, 0 },
 667         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 668         { "max_create_count", osc_rd_max_create_count,
 669                               osc_wr_max_create_count, 0},
 670         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 671         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 672         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 673         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 674         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 675         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 676         { "contention_seconds", osc_rd_contention_seconds,
 677                                 osc_wr_contention_seconds, 0 },
 678         { "lockless_truncate",  osc_rd_lockless_truncate,
 679                                 osc_wr_lockless_truncate, 0 },
 680         { "import",          lprocfs_rd_import,        lprocfs_wr_import, 0 },
 681         { "state",           lprocfs_rd_state,         0, 0 },
 682         { "pinger_recov",    lprocfs_rd_pinger_recov,
 683                              lprocfs_wr_pinger_recov,  0, 0 },
 684         { 0 }
 685 };
 686
 687 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 688         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 689         { 0 }
 690 };
 691
 692 #define pct(a,b) (b ? a * 100 / b : 0)
 693
 694 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 695 {
 696         struct timeval now;
 697         struct obd_device *dev = seq->private;
 698         struct client_obd *cli = &dev->u.cli;
 699         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 700         int i;
 701
 702         cfs_gettimeofday(&now);
 703
 704         client_obd_list_lock(&cli->cl_loi_list_lock);
 705
 706         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 707                    now.tv_sec, now.tv_usec);
 708         seq_printf(seq, "read RPCs in flight:  %d\n",
 709                    cli->cl_r_in_flight);
 710         seq_printf(seq, "write RPCs in flight: %d\n",
 711                    cli->cl_w_in_flight);
 712         seq_printf(seq, "pending write pages:  %d\n",
 713                    cfs_atomic_read(&cli->cl_pending_w_pages));
 714         seq_printf(seq, "pending read pages:   %d\n",
 715                    cfs_atomic_read(&cli->cl_pending_r_pages));
 716
 717         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 718         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 719         seq_printf(seq, "       rpcs   %% cum %%\n");
 720
 721         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 722         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 723
 724         read_cum = 0;
 725         write_cum = 0;
 726         for (i = 0; i < OBD_HIST_MAX; i++) {
 727                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 728                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 729                 read_cum += r;
 730                 write_cum += w;
 731                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 732                                  1 << i, r, pct(r, read_tot),
 733                                  pct(read_cum, read_tot), w,
 734                                  pct(w, write_tot),
 735                                  pct(write_cum, write_tot));
 736                 if (read_cum == read_tot && write_cum == write_tot)
 737                         break;
 738         }
 739
 740         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 741         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 742         seq_printf(seq, "       rpcs   %% cum %%\n");
 743
 744         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 745         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 746
 747         read_cum = 0;
 748         write_cum = 0;
 749         for (i = 0; i < OBD_HIST_MAX; i++) {
 750                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 751                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 752                 read_cum += r;
 753                 write_cum += w;
 754                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 755                                  i, r, pct(r, read_tot),
 756                                  pct(read_cum, read_tot), w,
 757                                  pct(w, write_tot),
 758                                  pct(write_cum, write_tot));
 759                 if (read_cum == read_tot && write_cum == write_tot)
 760                         break;
 761         }
 762
 763         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 764         seq_printf(seq, "offset                rpcs   %% cum %% |");
 765         seq_printf(seq, "       rpcs   %% cum %%\n");
 766
 767         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 768         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 769
 770         read_cum = 0;
 771         write_cum = 0;
 772         for (i = 0; i < OBD_HIST_MAX; i++) {
 773                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 774                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 775                 read_cum += r;
 776                 write_cum += w;
 777                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 778                            (i == 0) ? 0 : 1 << (i - 1),
 779                            r, pct(r, read_tot), pct(read_cum, read_tot),
 780                            w, pct(w, write_tot), pct(write_cum, write_tot));
 781                 if (read_cum == read_tot && write_cum == write_tot)
 782                         break;
 783         }
 784
 785         client_obd_list_unlock(&cli->cl_loi_list_lock);
 786
 787         return 0;
 788 }
 789 #undef pct
 790
 791 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 792                                        size_t len, loff_t *off)
 793 {
 794         struct seq_file *seq = file->private_data;
 795         struct obd_device *dev = seq->private;
 796         struct client_obd *cli = &dev->u.cli;
 797
 798         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 799         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 800         lprocfs_oh_clear(&cli->cl_read_page_hist);
 801         lprocfs_oh_clear(&cli->cl_write_page_hist);
 802         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 803         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 804
 805         return len;
 806 }
 807
 808 LPROC_SEQ_FOPS(osc_rpc_stats);
 809
 810 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 811 {
 812         struct timeval now;
 813         struct obd_device *dev = seq->private;
 814         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 815
 816         cfs_gettimeofday(&now);
 817
 818         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 819                    now.tv_sec, now.tv_usec);
 820         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 821                    stats->os_lockless_writes);
 822         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 823                    stats->os_lockless_reads);
 824         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 825                    stats->os_lockless_truncates);
 826         return 0;
 827 }
 828
 829 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 830                                    size_t len, loff_t *off)
 831 {
 832         struct seq_file *seq = file->private_data;
 833         struct obd_device *dev = seq->private;
 834         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 835
 836         memset(stats, 0, sizeof(*stats));
 837         return len;
 838 }
 839
 840 LPROC_SEQ_FOPS(osc_stats);
 841
 842 int lproc_osc_attach_seqstat(struct obd_device *dev)
 843 {
 844         int rc;
 845
 846         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0444,
 847                                 &osc_stats_fops, dev);
 848         if (rc == 0)
 849                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 850                                             &osc_rpc_stats_fops, dev);
 851         return rc;
 852 }
 853
 854 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 855 {
 856         lvars->module_vars = lprocfs_osc_module_vars;
 857         lvars->obd_vars    = lprocfs_osc_obd_vars;
 858 }
 859 #endif /* LPROCFS */