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_grant_shrink_interval(char *page, char **start, off_t off,
 260                                         int count, int *eof, void *data)
 261 {
 262         struct obd_device *obd = data;
 263
 264         if (obd == NULL)
 265                 return 0;
 266         return snprintf(page, count, "%d\n",
 267                         obd->u.cli.cl_grant_shrink_interval);
 268 }
 269
 270 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 271                                         unsigned long count, void *data)
 272 {
 273         struct obd_device *obd = data;
 274         int val, rc;
 275
 276         if (obd == NULL)
 277                 return 0;
 278
 279         rc = lprocfs_write_helper(buffer, count, &val);
 280         if (rc)
 281                 return rc;
 282
 283         if (val <= 0)
 284                 return -ERANGE;
 285
 286         obd->u.cli.cl_grant_shrink_interval = val;
 287
 288         return count;
 289 }
 290
 291 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 292                                int *eof, void *data)
 293 {
 294         struct obd_device *obd = data;
 295
 296         if (obd == NULL)
 297                 return 0;
 298
 299         return snprintf(page, count, "%d\n",
 300                         obd->u.cli.cl_oscc.oscc_grow_count);
 301 }
 302
 303 /**
 304  * Set OSC creator's osc_creator::oscc_grow_count
 305  *
 306  * \param file   proc file
 307  * \param buffer buffer containing the value
 308  * \param count  buffer size
 309  * \param data   obd device
 310  *
 311  * \retval \a count
 312  */
 313 static int osc_wr_create_count(struct file *file, const char *buffer,
 314                                unsigned long count, void *data)
 315 {
 316         struct obd_device *obd = data;
 317         int val, rc, i;
 318
 319         if (obd == NULL)
 320                 return 0;
 321
 322         rc = lprocfs_write_helper(buffer, count, &val);
 323         if (rc)
 324                 return rc;
 325
 326         /* The MDT ALWAYS needs to limit the precreate count to
 327          * OST_MAX_PRECREATE, and the constant cannot be changed
 328          * because it is a value shared between the OSC and OST
 329          * that is the maximum possible number of objects that will
 330          * ever be handled by MDT->OST recovery processing.
 331          *
 332          * If the OST ever gets a request to delete more orphans,
 333          * this implies that something has gone badly on the MDT
 334          * and the OST will refuse to delete so much data from the
 335          * filesystem as a safety measure. */
 336         if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
 337                 return -ERANGE;
 338         if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
 339                 return -ERANGE;
 340
 341         for (i = 1; (i << 1) <= val; i <<= 1)
 342                 ;
 343         obd->u.cli.cl_oscc.oscc_grow_count = i;
 344
 345         return count;
 346 }
 347
 348 /**
 349  * Read OSC creator's osc_creator::oscc_max_grow_count
 350  *
 351  * \param page       buffer to hold the returning string
 352  * \param start
 353  * \param off
 354  * \param count
 355  * \param eof
 356  *              proc read function parameters, please refer to kernel
 357  *              code fs/proc/generic.c proc_file_read()
 358  * \param data   obd device
 359  *
 360  * \retval number of characters printed.
 361  */
 362 static int osc_rd_max_create_count(char *page, char **start, off_t off,
 363                                    int count, int *eof, void *data)
 364 {
 365         struct obd_device *obd = data;
 366
 367         if (obd == NULL)
 368                 return 0;
 369
 370         return snprintf(page, count, "%d\n",
 371                         obd->u.cli.cl_oscc.oscc_max_grow_count);
 372 }
 373
 374 /**
 375  * Set OSC creator's osc_creator::oscc_max_grow_count
 376  *
 377  * \param file   proc file
 378  * \param buffer buffer containing the value
 379  * \param count  buffer size
 380  * \param data   obd device
 381  *
 382  * \retval \a count
 383  */
 384 static int osc_wr_max_create_count(struct file *file, const char *buffer,
 385                                    unsigned long count, void *data)
 386 {
 387         struct obd_device *obd = data;
 388         int val, rc;
 389
 390         if (obd == NULL)
 391                 return 0;
 392
 393         rc = lprocfs_write_helper(buffer, count, &val);
 394         if (rc)
 395                 return rc;
 396
 397         if (val < 0)
 398                 return -ERANGE;
 399         if (val > OST_MAX_PRECREATE)
 400                 return -ERANGE;
 401
 402         if (obd->u.cli.cl_oscc.oscc_grow_count > val)
 403                 obd->u.cli.cl_oscc.oscc_grow_count = val;
 404
 405         obd->u.cli.cl_oscc.oscc_max_grow_count = val;
 406
 407         return count;
 408 }
 409
 410 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 411                                    int count, int *eof, void *data)
 412 {
 413         struct obd_device *obd = data;
 414
 415         if (obd == NULL)
 416                 return 0;
 417
 418         return snprintf(page, count, LPU64"\n",
 419                         obd->u.cli.cl_oscc.oscc_next_id);
 420 }
 421
 422 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 423                                    int count, int *eof, void *data)
 424 {
 425         struct obd_device *obd = data;
 426
 427         if (obd == NULL)
 428                 return 0;
 429
 430         return snprintf(page, count, LPU64"\n",
 431                         obd->u.cli.cl_oscc.oscc_last_id);
 432 }
 433
 434 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 435                            int *eof, void *data)
 436 {
 437         struct obd_device *obd = data;
 438
 439         if (obd == NULL)
 440                 return 0;
 441
 442         return snprintf(page, count, "%d\n",
 443                         obd->u.cli.cl_checksum ? 1 : 0);
 444 }
 445
 446 static int osc_wr_checksum(struct file *file, const char *buffer,
 447                            unsigned long count, void *data)
 448 {
 449         struct obd_device *obd = data;
 450         int val, rc;
 451
 452         if (obd == NULL)
 453                 return 0;
 454
 455         rc = lprocfs_write_helper(buffer, count, &val);
 456         if (rc)
 457                 return rc;
 458
 459         obd->u.cli.cl_checksum = (val ? 1 : 0);
 460
 461         return count;
 462 }
 463
 464 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 465                                 int *eof, void *data)
 466 {
 467         struct obd_device *obd = data;
 468         int i, len =0;
 469         DECLARE_CKSUM_NAME;
 470
 471         if (obd == NULL)
 472                 return 0;
 473
 474         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 475                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 476                         continue;
 477                 if (obd->u.cli.cl_cksum_type == (1 << i))
 478                         len += snprintf(page + len, count - len, "[%s] ",
 479                                         cksum_name[i]);
 480                 else
 481                         len += snprintf(page + len, count - len, "%s ",
 482                                         cksum_name[i]);
 483         }
 484         if (len < count)
 485                 len += sprintf(page + len, "\n");
 486         return len;
 487 }
 488
 489 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 490                                 unsigned long count, void *data)
 491 {
 492         struct obd_device *obd = data;
 493         int i;
 494         DECLARE_CKSUM_NAME;
 495         char kernbuf[10];
 496
 497         if (obd == NULL)
 498                 return 0;
 499
 500         if (count > sizeof(kernbuf) - 1)
 501                 return -EINVAL;
 502         if (cfs_copy_from_user(kernbuf, buffer, count))
 503                 return -EFAULT;
 504         if (count > 0 && kernbuf[count - 1] == '\n')
 505                 kernbuf[count - 1] = '\0';
 506         else
 507                 kernbuf[count] = '\0';
 508
 509         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 510                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 511                         continue;
 512                 if (!strcmp(kernbuf, cksum_name[i])) {
 513                        obd->u.cli.cl_cksum_type = 1 << i;
 514                        return count;
 515                 }
 516         }
 517         return -EINVAL;
 518 }
 519
 520 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 521                                int *eof, void *data)
 522 {
 523         struct obd_device *obd = data;
 524
 525         return snprintf(page, count, "%u\n",
 526                         cfs_atomic_read(&obd->u.cli.cl_resends));
 527 }
 528
 529 static int osc_wr_resend_count(struct file *file, const char *buffer,
 530                                unsigned long count, void *data)
 531 {
 532         struct obd_device *obd = data;
 533         int val, rc;
 534
 535         rc = lprocfs_write_helper(buffer, count, &val);
 536         if (rc)
 537                 return rc;
 538
 539         if (val < 0)
 540                return -EINVAL;
 541
 542         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 543
 544         return count;
 545 }
 546
 547 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 548                                      int count, int *eof, void *data)
 549 {
 550         struct obd_device *obd = data;
 551         struct osc_device *od  = obd2osc_dev(obd);
 552
 553         return snprintf(page, count, "%u\n", od->od_contention_time);
 554 }
 555
 556 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 557                                      unsigned long count, void *data)
 558 {
 559         struct obd_device *obd = data;
 560         struct osc_device *od  = obd2osc_dev(obd);
 561
 562         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 563                 count;
 564 }
 565
 566 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 567                                     int count, int *eof, void *data)
 568 {
 569         struct obd_device *obd = data;
 570         struct osc_device *od  = obd2osc_dev(obd);
 571
 572         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 573 }
 574
 575 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 576                                     unsigned long count, void *data)
 577 {
 578         struct obd_device *obd = data;
 579         struct osc_device *od  = obd2osc_dev(obd);
 580
 581         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 582                 count;
 583 }
 584
 585 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 586                                      int count, int *eof, void *data)
 587 {
 588         struct obd_device *obd = data;
 589         return snprintf(page, count, "%u\n",
 590                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 591 }
 592
 593 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 594         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 595         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 596         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 597         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 598         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 599         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 600         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 601         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 602         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 603         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 604         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 605         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 606         { "active",          osc_rd_active,
 607                              osc_wr_active, 0 },
 608         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 609                                osc_wr_max_pages_per_rpc, 0 },
 610         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 611                                 osc_wr_max_rpcs_in_flight, 0 },
 612         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 613         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 614         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 615         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 616                              osc_wr_cur_grant_bytes, 0 },
 617         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 618                                    osc_wr_grant_shrink_interval, 0 },
 619         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 620         { "max_create_count", osc_rd_max_create_count,
 621                               osc_wr_max_create_count, 0},
 622         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 623         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 624         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 625         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 626         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 627         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 628         { "contention_seconds", osc_rd_contention_seconds,
 629                                 osc_wr_contention_seconds, 0 },
 630         { "lockless_truncate",  osc_rd_lockless_truncate,
 631                                 osc_wr_lockless_truncate, 0 },
 632         { "import",          lprocfs_rd_import,        0, 0 },
 633         { "state",           lprocfs_rd_state,         0, 0 },
 634         { 0 }
 635 };
 636
 637 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 638         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 639         { 0 }
 640 };
 641
 642 #define pct(a,b) (b ? a * 100 / b : 0)
 643
 644 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 645 {
 646         struct timeval now;
 647         struct obd_device *dev = seq->private;
 648         struct client_obd *cli = &dev->u.cli;
 649         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 650         int i;
 651
 652         cfs_gettimeofday(&now);
 653
 654         client_obd_list_lock(&cli->cl_loi_list_lock);
 655
 656         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 657                    now.tv_sec, now.tv_usec);
 658         seq_printf(seq, "read RPCs in flight:  %d\n",
 659                    cli->cl_r_in_flight);
 660         seq_printf(seq, "write RPCs in flight: %d\n",
 661                    cli->cl_w_in_flight);
 662         seq_printf(seq, "pending write pages:  %d\n",
 663                    cli->cl_pending_w_pages);
 664         seq_printf(seq, "pending read pages:   %d\n",
 665                    cli->cl_pending_r_pages);
 666
 667         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 668         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 669         seq_printf(seq, "       rpcs   %% cum %%\n");
 670
 671         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 672         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 673
 674         read_cum = 0;
 675         write_cum = 0;
 676         for (i = 0; i < OBD_HIST_MAX; i++) {
 677                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 678                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 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         client_obd_list_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, const char *buf,
 742                                        size_t len, loff_t *off)
 743 {
 744         struct seq_file *seq = file->private_data;
 745         struct obd_device *dev = seq->private;
 746         struct client_obd *cli = &dev->u.cli;
 747
 748         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 749         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 750         lprocfs_oh_clear(&cli->cl_read_page_hist);
 751         lprocfs_oh_clear(&cli->cl_write_page_hist);
 752         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 753         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 754
 755         return len;
 756 }
 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         cfs_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, const char *buf,
 780                                    size_t len, loff_t *off)
 781 {
 782         struct seq_file *seq = file->private_data;
 783         struct obd_device *dev = seq->private;
 784         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 785
 786         memset(stats, 0, sizeof(*stats));
 787         return len;
 788 }
 789
 790 LPROC_SEQ_FOPS(osc_stats);
 791
 792 int lproc_osc_attach_seqstat(struct obd_device *dev)
 793 {
 794         int rc;
 795
 796         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0444,
 797                                 &osc_stats_fops, dev);
 798         if (rc == 0)
 799                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 800                                             &osc_rpc_stats_fops, dev);
 801         return rc;
 802 }
 803
 804 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 805 {
 806         lvars->module_vars = lprocfs_osc_module_vars;
 807         lvars->obd_vars    = lprocfs_osc_obd_vars;
 808 }
 809 #endif /* LPROCFS */