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  * Copyright (c) 2011 Whamcloud, Inc.
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39 #define DEBUG_SUBSYSTEM S_CLASS
  40
  41 #include <linux/version.h>
  42 #include <asm/statfs.h>
  43 #include <obd_cksum.h>
  44 #include <obd_class.h>
  45 #include <lprocfs_status.h>
  46 #include <linux/seq_file.h>
  47 #include "osc_internal.h"
  48
  49 #ifdef LPROCFS
  50 static int osc_rd_active(char *page, char **start, off_t off,
  51                          int count, int *eof, void *data)
  52 {
  53         struct obd_device *dev = data;
  54         int rc;
  55
  56         LPROCFS_CLIMP_CHECK(dev);
  57         rc = snprintf(page, count, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  58         LPROCFS_CLIMP_EXIT(dev);
  59         return rc;
  60 }
  61
  62 static int osc_wr_active(struct file *file, const char *buffer,
  63                          unsigned long count, void *data)
  64 {
  65         struct obd_device *dev = data;
  66         int val, rc;
  67
  68         rc = lprocfs_write_helper(buffer, count, &val);
  69         if (rc)
  70                 return rc;
  71         if (val < 0 || val > 1)
  72                 return -ERANGE;
  73
  74         LPROCFS_CLIMP_CHECK(dev);
  75         /* opposite senses */
  76         if (dev->u.cli.cl_import->imp_deactive == val)
  77                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  78         else
  79                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  80
  81         LPROCFS_CLIMP_EXIT(dev);
  82         return count;
  83 }
  84
  85 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
  86                                      int count, int *eof, void *data)
  87 {
  88         struct obd_device *dev = data;
  89         struct client_obd *cli = &dev->u.cli;
  90         int rc;
  91
  92         client_obd_list_lock(&cli->cl_loi_list_lock);
  93         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
  94         client_obd_list_unlock(&cli->cl_loi_list_lock);
  95         return rc;
  96 }
  97
  98 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
  99                                      unsigned long count, void *data)
 100 {
 101         struct obd_device *dev = data;
 102         struct client_obd *cli = &dev->u.cli;
 103         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 104         int val, rc;
 105
 106         rc = lprocfs_write_helper(buffer, count, &val);
 107         if (rc)
 108                 return rc;
 109
 110         if (val < 1 || val > OSC_MAX_RIF_MAX)
 111                 return -ERANGE;
 112
 113         LPROCFS_CLIMP_CHECK(dev);
 114         if (pool && val > cli->cl_max_rpcs_in_flight)
 115                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 116
 117         client_obd_list_lock(&cli->cl_loi_list_lock);
 118         cli->cl_max_rpcs_in_flight = val;
 119         client_obd_list_unlock(&cli->cl_loi_list_lock);
 120
 121         LPROCFS_CLIMP_EXIT(dev);
 122         return count;
 123 }
 124
 125 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 126                                int *eof, void *data)
 127 {
 128         struct obd_device *dev = data;
 129         struct client_obd *cli = &dev->u.cli;
 130         long val;
 131         int mult;
 132
 133         client_obd_list_lock(&cli->cl_loi_list_lock);
 134         val = cli->cl_dirty_max;
 135         client_obd_list_unlock(&cli->cl_loi_list_lock);
 136
 137         mult = 1 << 20;
 138         return lprocfs_read_frac_helper(page, count, val, mult);
 139 }
 140
 141 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 142                                unsigned long count, void *data)
 143 {
 144         struct obd_device *dev = data;
 145         struct client_obd *cli = &dev->u.cli;
 146         int pages_number, mult, rc;
 147
 148         mult = 1 << (20 - CFS_PAGE_SHIFT);
 149         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 150         if (rc)
 151                 return rc;
 152
 153         if (pages_number < 0 ||
 154             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 155             pages_number > cfs_num_physpages / 4) /* 1/4 of RAM */
 156                 return -ERANGE;
 157
 158         client_obd_list_lock(&cli->cl_loi_list_lock);
 159         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 160         osc_wake_cache_waiters(cli);
 161         client_obd_list_unlock(&cli->cl_loi_list_lock);
 162
 163         return count;
 164 }
 165
 166 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 167                                   int count, int *eof, void *data)
 168 {
 169         struct obd_device *dev = data;
 170         struct client_obd *cli = &dev->u.cli;
 171         int rc;
 172
 173         client_obd_list_lock(&cli->cl_loi_list_lock);
 174         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 175         client_obd_list_unlock(&cli->cl_loi_list_lock);
 176         return rc;
 177 }
 178
 179 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 180                                   int count, int *eof, void *data)
 181 {
 182         struct obd_device *dev = data;
 183         struct client_obd *cli = &dev->u.cli;
 184         int rc;
 185
 186         client_obd_list_lock(&cli->cl_loi_list_lock);
 187         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 188         client_obd_list_unlock(&cli->cl_loi_list_lock);
 189         return rc;
 190 }
 191
 192 static int osc_wr_cur_grant_bytes(struct file *file, const char *buffer,
 193                                   unsigned long count, void *data)
 194 {
 195         struct obd_device *obd = data;
 196         struct client_obd *cli = &obd->u.cli;
 197         int                rc;
 198         __u64              val;
 199
 200         if (obd == NULL)
 201                 return 0;
 202
 203         rc = lprocfs_write_u64_helper(buffer, count, &val);
 204         if (rc)
 205                 return rc;
 206
 207         /* this is only for shrinking grant */
 208         client_obd_list_lock(&cli->cl_loi_list_lock);
 209         if (val >= cli->cl_avail_grant) {
 210                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 211                 return 0;
 212         }
 213         client_obd_list_unlock(&cli->cl_loi_list_lock);
 214
 215         LPROCFS_CLIMP_CHECK(obd);
 216         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 217                 rc = osc_shrink_grant_to_target(cli, val);
 218         LPROCFS_CLIMP_EXIT(obd);
 219         if (rc)
 220                 return rc;
 221         return count;
 222 }
 223
 224 static int osc_rd_cur_lost_grant_bytes(char *page, char **start, off_t off,
 225                                        int count, int *eof, void *data)
 226 {
 227         struct obd_device *dev = data;
 228         struct client_obd *cli = &dev->u.cli;
 229         int rc;
 230
 231         client_obd_list_lock(&cli->cl_loi_list_lock);
 232         rc = snprintf(page, count, "%lu\n", cli->cl_lost_grant);
 233         client_obd_list_unlock(&cli->cl_loi_list_lock);
 234         return rc;
 235 }
 236
 237 static int osc_rd_grant_shrink_interval(char *page, char **start, off_t off,
 238                                         int count, int *eof, void *data)
 239 {
 240         struct obd_device *obd = data;
 241
 242         if (obd == NULL)
 243                 return 0;
 244         return snprintf(page, count, "%d\n",
 245                         obd->u.cli.cl_grant_shrink_interval);
 246 }
 247
 248 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 249                                         unsigned long count, void *data)
 250 {
 251         struct obd_device *obd = data;
 252         int val, rc;
 253
 254         if (obd == NULL)
 255                 return 0;
 256
 257         rc = lprocfs_write_helper(buffer, count, &val);
 258         if (rc)
 259                 return rc;
 260
 261         if (val <= 0)
 262                 return -ERANGE;
 263
 264         obd->u.cli.cl_grant_shrink_interval = val;
 265
 266         return count;
 267 }
 268
 269 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 270                                int *eof, void *data)
 271 {
 272         struct obd_device *obd = data;
 273
 274         if (obd == NULL)
 275                 return 0;
 276
 277         return snprintf(page, count, "%d\n",
 278                         obd->u.cli.cl_oscc.oscc_grow_count);
 279 }
 280
 281 /**
 282  * Set OSC creator's osc_creator::oscc_grow_count
 283  *
 284  * \param file   proc file
 285  * \param buffer buffer containing the value
 286  * \param count  buffer size
 287  * \param data   obd device
 288  *
 289  * \retval \a count
 290  */
 291 static int osc_wr_create_count(struct file *file, const char *buffer,
 292                                unsigned long count, void *data)
 293 {
 294         struct obd_device *obd = data;
 295         int val, rc, i;
 296
 297         if (obd == NULL)
 298                 return 0;
 299
 300         rc = lprocfs_write_helper(buffer, count, &val);
 301         if (rc)
 302                 return rc;
 303
 304         /* The MDT ALWAYS needs to limit the precreate count to
 305          * OST_MAX_PRECREATE, and the constant cannot be changed
 306          * because it is a value shared between the OSC and OST
 307          * that is the maximum possible number of objects that will
 308          * ever be handled by MDT->OST recovery processing.
 309          *
 310          * If the OST ever gets a request to delete more orphans,
 311          * this implies that something has gone badly on the MDT
 312          * and the OST will refuse to delete so much data from the
 313          * filesystem as a safety measure. */
 314         if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
 315                 return -ERANGE;
 316         if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
 317                 return -ERANGE;
 318
 319         for (i = 1; (i << 1) <= val; i <<= 1)
 320                 ;
 321         obd->u.cli.cl_oscc.oscc_grow_count = i;
 322
 323         return count;
 324 }
 325
 326 /**
 327  * Read OSC creator's osc_creator::oscc_max_grow_count
 328  *
 329  * \param page       buffer to hold the returning string
 330  * \param start
 331  * \param off
 332  * \param count
 333  * \param eof
 334  *              proc read function parameters, please refer to kernel
 335  *              code fs/proc/generic.c proc_file_read()
 336  * \param data   obd device
 337  *
 338  * \retval number of characters printed.
 339  */
 340 static int osc_rd_max_create_count(char *page, char **start, off_t off,
 341                                    int count, int *eof, void *data)
 342 {
 343         struct obd_device *obd = data;
 344
 345         if (obd == NULL)
 346                 return 0;
 347
 348         return snprintf(page, count, "%d\n",
 349                         obd->u.cli.cl_oscc.oscc_max_grow_count);
 350 }
 351
 352 /**
 353  * Set OSC creator's osc_creator::oscc_max_grow_count
 354  *
 355  * \param file   proc file
 356  * \param buffer buffer containing the value
 357  * \param count  buffer size
 358  * \param data   obd device
 359  *
 360  * \retval \a count
 361  */
 362 static int osc_wr_max_create_count(struct file *file, const char *buffer,
 363                                    unsigned long count, void *data)
 364 {
 365         struct obd_device *obd = data;
 366         int val, rc;
 367
 368         if (obd == NULL)
 369                 return 0;
 370
 371         rc = lprocfs_write_helper(buffer, count, &val);
 372         if (rc)
 373                 return rc;
 374
 375         if (val < 0)
 376                 return -ERANGE;
 377         if (val > OST_MAX_PRECREATE)
 378                 return -ERANGE;
 379
 380         if (obd->u.cli.cl_oscc.oscc_grow_count > val)
 381                 obd->u.cli.cl_oscc.oscc_grow_count = val;
 382
 383         obd->u.cli.cl_oscc.oscc_max_grow_count = val;
 384
 385         return count;
 386 }
 387
 388 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 389                                    int count, int *eof, void *data)
 390 {
 391         struct obd_device *obd = data;
 392
 393         if (obd == NULL)
 394                 return 0;
 395
 396         return snprintf(page, count, LPU64"\n",
 397                         obd->u.cli.cl_oscc.oscc_next_id);
 398 }
 399
 400 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 401                                    int count, int *eof, void *data)
 402 {
 403         struct obd_device *obd = data;
 404
 405         if (obd == NULL)
 406                 return 0;
 407
 408         return snprintf(page, count, LPU64"\n",
 409                         obd->u.cli.cl_oscc.oscc_last_id);
 410 }
 411
 412 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 413                            int *eof, void *data)
 414 {
 415         struct obd_device *obd = data;
 416
 417         if (obd == NULL)
 418                 return 0;
 419
 420         return snprintf(page, count, "%d\n",
 421                         obd->u.cli.cl_checksum ? 1 : 0);
 422 }
 423
 424 static int osc_wr_checksum(struct file *file, const char *buffer,
 425                            unsigned long count, void *data)
 426 {
 427         struct obd_device *obd = data;
 428         int val, rc;
 429
 430         if (obd == NULL)
 431                 return 0;
 432
 433         rc = lprocfs_write_helper(buffer, count, &val);
 434         if (rc)
 435                 return rc;
 436
 437         obd->u.cli.cl_checksum = (val ? 1 : 0);
 438
 439         return count;
 440 }
 441
 442 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 443                                 int *eof, void *data)
 444 {
 445         struct obd_device *obd = data;
 446         int i, len =0;
 447         DECLARE_CKSUM_NAME;
 448
 449         if (obd == NULL)
 450                 return 0;
 451
 452         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 453                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 454                         continue;
 455                 if (obd->u.cli.cl_cksum_type == (1 << i))
 456                         len += snprintf(page + len, count - len, "[%s] ",
 457                                         cksum_name[i]);
 458                 else
 459                         len += snprintf(page + len, count - len, "%s ",
 460                                         cksum_name[i]);
 461         }
 462         if (len < count)
 463                 len += sprintf(page + len, "\n");
 464         return len;
 465 }
 466
 467 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 468                                 unsigned long count, void *data)
 469 {
 470         struct obd_device *obd = data;
 471         int i;
 472         DECLARE_CKSUM_NAME;
 473         char kernbuf[10];
 474
 475         if (obd == NULL)
 476                 return 0;
 477
 478         if (count > sizeof(kernbuf) - 1)
 479                 return -EINVAL;
 480         if (cfs_copy_from_user(kernbuf, buffer, count))
 481                 return -EFAULT;
 482         if (count > 0 && kernbuf[count - 1] == '\n')
 483                 kernbuf[count - 1] = '\0';
 484         else
 485                 kernbuf[count] = '\0';
 486
 487         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 488                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 489                         continue;
 490                 if (!strcmp(kernbuf, cksum_name[i])) {
 491                        obd->u.cli.cl_cksum_type = 1 << i;
 492                        return count;
 493                 }
 494         }
 495         return -EINVAL;
 496 }
 497
 498 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 499                                int *eof, void *data)
 500 {
 501         struct obd_device *obd = data;
 502
 503         return snprintf(page, count, "%u\n",
 504                         cfs_atomic_read(&obd->u.cli.cl_resends));
 505 }
 506
 507 static int osc_wr_resend_count(struct file *file, const char *buffer,
 508                                unsigned long count, void *data)
 509 {
 510         struct obd_device *obd = data;
 511         int val, rc;
 512
 513         rc = lprocfs_write_helper(buffer, count, &val);
 514         if (rc)
 515                 return rc;
 516
 517         if (val < 0)
 518                return -EINVAL;
 519
 520         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 521
 522         return count;
 523 }
 524
 525 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 526                                      int count, int *eof, void *data)
 527 {
 528         struct obd_device *obd = data;
 529         struct osc_device *od  = obd2osc_dev(obd);
 530
 531         return snprintf(page, count, "%u\n", od->od_contention_time);
 532 }
 533
 534 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 535                                      unsigned long count, void *data)
 536 {
 537         struct obd_device *obd = data;
 538         struct osc_device *od  = obd2osc_dev(obd);
 539
 540         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 541                 count;
 542 }
 543
 544 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 545                                     int count, int *eof, void *data)
 546 {
 547         struct obd_device *obd = data;
 548         struct osc_device *od  = obd2osc_dev(obd);
 549
 550         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 551 }
 552
 553 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 554                                     unsigned long count, void *data)
 555 {
 556         struct obd_device *obd = data;
 557         struct osc_device *od  = obd2osc_dev(obd);
 558
 559         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 560                 count;
 561 }
 562
 563 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 564                                      int count, int *eof, void *data)
 565 {
 566         struct obd_device *obd = data;
 567         return snprintf(page, count, "%u\n",
 568                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 569 }
 570
 571 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 572         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 573         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 574         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 575         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 576         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 577         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 578         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 579         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 580         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 581         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 582         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 583         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 584         { "active",          osc_rd_active,
 585                              osc_wr_active, 0 },
 586         { "max_pages_per_rpc", lprocfs_obd_rd_max_pages_per_rpc,
 587                                lprocfs_obd_wr_max_pages_per_rpc, 0 },
 588         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 589                                 osc_wr_max_rpcs_in_flight, 0 },
 590         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 591         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 592         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 593         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 594                              osc_wr_cur_grant_bytes, 0 },
 595         { "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
 596         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 597                                    osc_wr_grant_shrink_interval, 0 },
 598         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 599         { "max_create_count", osc_rd_max_create_count,
 600                               osc_wr_max_create_count, 0},
 601         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 602         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 603         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 604         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 605         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 606         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 607         { "contention_seconds", osc_rd_contention_seconds,
 608                                 osc_wr_contention_seconds, 0 },
 609         { "lockless_truncate",  osc_rd_lockless_truncate,
 610                                 osc_wr_lockless_truncate, 0 },
 611         { "import",          lprocfs_rd_import,        lprocfs_wr_import, 0 },
 612         { "state",           lprocfs_rd_state,         0, 0 },
 613         { "pinger_recov",    lprocfs_rd_pinger_recov,
 614                              lprocfs_wr_pinger_recov,  0, 0 },
 615         { 0 }
 616 };
 617
 618 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 619         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 620         { 0 }
 621 };
 622
 623 #define pct(a,b) (b ? a * 100 / b : 0)
 624
 625 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 626 {
 627         struct timeval now;
 628         struct obd_device *dev = seq->private;
 629         struct client_obd *cli = &dev->u.cli;
 630         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 631         int i;
 632
 633         cfs_gettimeofday(&now);
 634
 635         client_obd_list_lock(&cli->cl_loi_list_lock);
 636
 637         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 638                    now.tv_sec, now.tv_usec);
 639         seq_printf(seq, "read RPCs in flight:  %d\n",
 640                    cli->cl_r_in_flight);
 641         seq_printf(seq, "write RPCs in flight: %d\n",
 642                    cli->cl_w_in_flight);
 643         seq_printf(seq, "pending write pages:  %d\n",
 644                    cli->cl_pending_w_pages);
 645         seq_printf(seq, "pending read pages:   %d\n",
 646                    cli->cl_pending_r_pages);
 647
 648         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 649         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 650         seq_printf(seq, "       rpcs   %% cum %%\n");
 651
 652         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 653         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 654
 655         read_cum = 0;
 656         write_cum = 0;
 657         for (i = 0; i < OBD_HIST_MAX; i++) {
 658                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 659                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 660                 read_cum += r;
 661                 write_cum += w;
 662                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 663                                  1 << i, r, pct(r, read_tot),
 664                                  pct(read_cum, read_tot), w,
 665                                  pct(w, write_tot),
 666                                  pct(write_cum, write_tot));
 667                 if (read_cum == read_tot && write_cum == write_tot)
 668                         break;
 669         }
 670
 671         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 672         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 673         seq_printf(seq, "       rpcs   %% cum %%\n");
 674
 675         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 676         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 677
 678         read_cum = 0;
 679         write_cum = 0;
 680         for (i = 0; i < OBD_HIST_MAX; i++) {
 681                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 682                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 683                 read_cum += r;
 684                 write_cum += w;
 685                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 686                                  i, r, pct(r, read_tot),
 687                                  pct(read_cum, read_tot), w,
 688                                  pct(w, write_tot),
 689                                  pct(write_cum, write_tot));
 690                 if (read_cum == read_tot && write_cum == write_tot)
 691                         break;
 692         }
 693
 694         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 695         seq_printf(seq, "offset                rpcs   %% cum %% |");
 696         seq_printf(seq, "       rpcs   %% cum %%\n");
 697
 698         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 699         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 700
 701         read_cum = 0;
 702         write_cum = 0;
 703         for (i = 0; i < OBD_HIST_MAX; i++) {
 704                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 705                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 706                 read_cum += r;
 707                 write_cum += w;
 708                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 709                            (i == 0) ? 0 : 1 << (i - 1),
 710                            r, pct(r, read_tot), pct(read_cum, read_tot),
 711                            w, pct(w, write_tot), pct(write_cum, write_tot));
 712                 if (read_cum == read_tot && write_cum == write_tot)
 713                         break;
 714         }
 715
 716         client_obd_list_unlock(&cli->cl_loi_list_lock);
 717
 718         return 0;
 719 }
 720 #undef pct
 721
 722 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 723                                        size_t len, loff_t *off)
 724 {
 725         struct seq_file *seq = file->private_data;
 726         struct obd_device *dev = seq->private;
 727         struct client_obd *cli = &dev->u.cli;
 728
 729         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 730         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 731         lprocfs_oh_clear(&cli->cl_read_page_hist);
 732         lprocfs_oh_clear(&cli->cl_write_page_hist);
 733         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 734         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 735
 736         return len;
 737 }
 738
 739 LPROC_SEQ_FOPS(osc_rpc_stats);
 740
 741 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 742 {
 743         struct timeval now;
 744         struct obd_device *dev = seq->private;
 745         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 746
 747         cfs_gettimeofday(&now);
 748
 749         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 750                    now.tv_sec, now.tv_usec);
 751         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 752                    stats->os_lockless_writes);
 753         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 754                    stats->os_lockless_reads);
 755         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 756                    stats->os_lockless_truncates);
 757         return 0;
 758 }
 759
 760 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 761                                    size_t len, loff_t *off)
 762 {
 763         struct seq_file *seq = file->private_data;
 764         struct obd_device *dev = seq->private;
 765         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 766
 767         memset(stats, 0, sizeof(*stats));
 768         return len;
 769 }
 770
 771 LPROC_SEQ_FOPS(osc_stats);
 772
 773 int lproc_osc_attach_seqstat(struct obd_device *dev)
 774 {
 775         int rc;
 776
 777         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0444,
 778                                 &osc_stats_fops, dev);
 779         if (rc == 0)
 780                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 781                                             &osc_rpc_stats_fops, dev);
 782         return rc;
 783 }
 784
 785 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 786 {
 787         lvars->module_vars = lprocfs_osc_module_vars;
 788         lvars->obd_vars    = lprocfs_osc_obd_vars;
 789 }
 790 #endif /* LPROCFS */