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