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  * Copyright (c) 2011, Whamcloud, Inc.
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  */
  38 #define DEBUG_SUBSYSTEM S_CLASS
  39
  40 #include <linux/version.h>
  41 #include <asm/statfs.h>
  42 #include <obd_cksum.h>
  43 #include <obd_class.h>
  44 #include <lprocfs_status.h>
  45 #include <linux/seq_file.h>
  46 #include "osc_internal.h"
  47
  48 #ifdef LPROCFS
  49 static int osc_rd_active(char *page, char **start, off_t off,
  50                          int count, int *eof, void *data)
  51 {
  52         struct obd_device *dev = data;
  53         int rc;
  54
  55         LPROCFS_CLIMP_CHECK(dev);
  56         rc = snprintf(page, count, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  57         LPROCFS_CLIMP_EXIT(dev);
  58         return rc;
  59 }
  60
  61 static int osc_wr_active(struct file *file, const char *buffer,
  62                          unsigned long count, void *data)
  63 {
  64         struct obd_device *dev = data;
  65         int val, rc;
  66
  67         rc = lprocfs_write_helper(buffer, count, &val);
  68         if (rc)
  69                 return rc;
  70         if (val < 0 || val > 1)
  71                 return -ERANGE;
  72
  73         LPROCFS_CLIMP_CHECK(dev);
  74         /* opposite senses */
  75         if (dev->u.cli.cl_import->imp_deactive == val)
  76                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  77         else
  78                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  79
  80         LPROCFS_CLIMP_EXIT(dev);
  81         return count;
  82 }
  83
  84 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
  85                                      int count, int *eof, void *data)
  86 {
  87         struct obd_device *dev = data;
  88         struct client_obd *cli = &dev->u.cli;
  89         int rc;
  90
  91         client_obd_list_lock(&cli->cl_loi_list_lock);
  92         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
  93         client_obd_list_unlock(&cli->cl_loi_list_lock);
  94         return rc;
  95 }
  96
  97 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
  98                                      unsigned long count, void *data)
  99 {
 100         struct obd_device *dev = data;
 101         struct client_obd *cli = &dev->u.cli;
 102         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 103         int val, rc;
 104
 105         rc = lprocfs_write_helper(buffer, count, &val);
 106         if (rc)
 107                 return rc;
 108
 109         if (val < 1 || val > OSC_MAX_RIF_MAX)
 110                 return -ERANGE;
 111
 112         LPROCFS_CLIMP_CHECK(dev);
 113         if (pool && val > cli->cl_max_rpcs_in_flight)
 114                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 115
 116         client_obd_list_lock(&cli->cl_loi_list_lock);
 117         cli->cl_max_rpcs_in_flight = val;
 118         client_obd_list_unlock(&cli->cl_loi_list_lock);
 119
 120         LPROCFS_CLIMP_EXIT(dev);
 121         return count;
 122 }
 123
 124 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 125                                int *eof, void *data)
 126 {
 127         struct obd_device *dev = data;
 128         struct client_obd *cli = &dev->u.cli;
 129         long val;
 130         int mult;
 131
 132         client_obd_list_lock(&cli->cl_loi_list_lock);
 133         val = cli->cl_dirty_max;
 134         client_obd_list_unlock(&cli->cl_loi_list_lock);
 135
 136         mult = 1 << 20;
 137         return lprocfs_read_frac_helper(page, count, val, mult);
 138 }
 139
 140 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 141                                unsigned long count, void *data)
 142 {
 143         struct obd_device *dev = data;
 144         struct client_obd *cli = &dev->u.cli;
 145         int pages_number, mult, rc;
 146
 147         mult = 1 << (20 - CFS_PAGE_SHIFT);
 148         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 149         if (rc)
 150                 return rc;
 151
 152         if (pages_number < 0 ||
 153             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 154             pages_number > cfs_num_physpages / 4) /* 1/4 of RAM */
 155                 return -ERANGE;
 156
 157         client_obd_list_lock(&cli->cl_loi_list_lock);
 158         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 159         osc_wake_cache_waiters(cli);
 160         client_obd_list_unlock(&cli->cl_loi_list_lock);
 161
 162         return count;
 163 }
 164
 165 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 166                                   int count, int *eof, void *data)
 167 {
 168         struct obd_device *dev = data;
 169         struct client_obd *cli = &dev->u.cli;
 170         int rc;
 171
 172         client_obd_list_lock(&cli->cl_loi_list_lock);
 173         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 174         client_obd_list_unlock(&cli->cl_loi_list_lock);
 175         return rc;
 176 }
 177
 178 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 179                                   int count, int *eof, void *data)
 180 {
 181         struct obd_device *dev = data;
 182         struct client_obd *cli = &dev->u.cli;
 183         int rc;
 184
 185         client_obd_list_lock(&cli->cl_loi_list_lock);
 186         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 187         client_obd_list_unlock(&cli->cl_loi_list_lock);
 188         return rc;
 189 }
 190
 191 static int osc_wr_cur_grant_bytes(struct file *file, const char *buffer,
 192                                   unsigned long count, void *data)
 193 {
 194         struct obd_device *obd = data;
 195         struct client_obd *cli = &obd->u.cli;
 196         int                rc;
 197         __u64              val;
 198
 199         if (obd == NULL)
 200                 return 0;
 201
 202         rc = lprocfs_write_u64_helper(buffer, count, &val);
 203         if (rc)
 204                 return rc;
 205
 206         /* this is only for shrinking grant */
 207         client_obd_list_lock(&cli->cl_loi_list_lock);
 208         if (val >= cli->cl_avail_grant) {
 209                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 210                 return 0;
 211         }
 212         client_obd_list_unlock(&cli->cl_loi_list_lock);
 213
 214         LPROCFS_CLIMP_CHECK(obd);
 215         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 216                 rc = osc_shrink_grant_to_target(cli, val);
 217         LPROCFS_CLIMP_EXIT(obd);
 218         if (rc)
 219                 return rc;
 220         return count;
 221 }
 222
 223 static int osc_rd_cur_lost_grant_bytes(char *page, char **start, off_t off,
 224                                        int count, int *eof, void *data)
 225 {
 226         struct obd_device *dev = data;
 227         struct client_obd *cli = &dev->u.cli;
 228         int rc;
 229
 230         client_obd_list_lock(&cli->cl_loi_list_lock);
 231         rc = snprintf(page, count, "%lu\n", cli->cl_lost_grant);
 232         client_obd_list_unlock(&cli->cl_loi_list_lock);
 233         return rc;
 234 }
 235
 236 static int osc_rd_grant_shrink_interval(char *page, char **start, off_t off,
 237                                         int count, int *eof, void *data)
 238 {
 239         struct obd_device *obd = data;
 240
 241         if (obd == NULL)
 242                 return 0;
 243         return snprintf(page, count, "%d\n",
 244                         obd->u.cli.cl_grant_shrink_interval);
 245 }
 246
 247 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 248                                         unsigned long count, void *data)
 249 {
 250         struct obd_device *obd = data;
 251         int val, rc;
 252
 253         if (obd == NULL)
 254                 return 0;
 255
 256         rc = lprocfs_write_helper(buffer, count, &val);
 257         if (rc)
 258                 return rc;
 259
 260         if (val <= 0)
 261                 return -ERANGE;
 262
 263         obd->u.cli.cl_grant_shrink_interval = val;
 264
 265         return count;
 266 }
 267
 268 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 269                                int *eof, void *data)
 270 {
 271         struct obd_device *obd = data;
 272
 273         if (obd == NULL)
 274                 return 0;
 275
 276         return snprintf(page, count, "%d\n",
 277                         obd->u.cli.cl_oscc.oscc_grow_count);
 278 }
 279
 280 /**
 281  * Set OSC creator's osc_creator::oscc_grow_count
 282  *
 283  * \param file   proc file
 284  * \param buffer buffer containing the value
 285  * \param count  buffer size
 286  * \param data   obd device
 287  *
 288  * \retval \a count
 289  */
 290 static int osc_wr_create_count(struct file *file, const char *buffer,
 291                                unsigned long count, void *data)
 292 {
 293         struct obd_device *obd = data;
 294         int val, rc, i;
 295
 296         if (obd == NULL)
 297                 return 0;
 298
 299         rc = lprocfs_write_helper(buffer, count, &val);
 300         if (rc)
 301                 return rc;
 302
 303         /* The MDT ALWAYS needs to limit the precreate count to
 304          * OST_MAX_PRECREATE, and the constant cannot be changed
 305          * because it is a value shared between the OSC and OST
 306          * that is the maximum possible number of objects that will
 307          * ever be handled by MDT->OST recovery processing.
 308          *
 309          * If the OST ever gets a request to delete more orphans,
 310          * this implies that something has gone badly on the MDT
 311          * and the OST will refuse to delete so much data from the
 312          * filesystem as a safety measure. */
 313         if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
 314                 return -ERANGE;
 315         if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
 316                 return -ERANGE;
 317
 318         for (i = 1; (i << 1) <= val; i <<= 1)
 319                 ;
 320         obd->u.cli.cl_oscc.oscc_grow_count = i;
 321
 322         return count;
 323 }
 324
 325 /**
 326  * Read OSC creator's osc_creator::oscc_max_grow_count
 327  *
 328  * \param page       buffer to hold the returning string
 329  * \param start
 330  * \param off
 331  * \param count
 332  * \param eof
 333  *              proc read function parameters, please refer to kernel
 334  *              code fs/proc/generic.c proc_file_read()
 335  * \param data   obd device
 336  *
 337  * \retval number of characters printed.
 338  */
 339 static int osc_rd_max_create_count(char *page, char **start, off_t off,
 340                                    int count, int *eof, void *data)
 341 {
 342         struct obd_device *obd = data;
 343
 344         if (obd == NULL)
 345                 return 0;
 346
 347         return snprintf(page, count, "%d\n",
 348                         obd->u.cli.cl_oscc.oscc_max_grow_count);
 349 }
 350
 351 /**
 352  * Set OSC creator's osc_creator::oscc_max_grow_count
 353  *
 354  * \param file   proc file
 355  * \param buffer buffer containing the value
 356  * \param count  buffer size
 357  * \param data   obd device
 358  *
 359  * \retval \a count
 360  */
 361 static int osc_wr_max_create_count(struct file *file, const char *buffer,
 362                                    unsigned long count, void *data)
 363 {
 364         struct obd_device *obd = data;
 365         int val, rc;
 366
 367         if (obd == NULL)
 368                 return 0;
 369
 370         rc = lprocfs_write_helper(buffer, count, &val);
 371         if (rc)
 372                 return rc;
 373
 374         if (val < 0)
 375                 return -ERANGE;
 376         if (val > OST_MAX_PRECREATE)
 377                 return -ERANGE;
 378
 379         if (obd->u.cli.cl_oscc.oscc_grow_count > val)
 380                 obd->u.cli.cl_oscc.oscc_grow_count = val;
 381
 382         obd->u.cli.cl_oscc.oscc_max_grow_count = val;
 383
 384         return count;
 385 }
 386
 387 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 388                                    int count, int *eof, void *data)
 389 {
 390         struct obd_device *obd = data;
 391
 392         if (obd == NULL)
 393                 return 0;
 394
 395         return snprintf(page, count, LPU64"\n",
 396                         obd->u.cli.cl_oscc.oscc_next_id);
 397 }
 398
 399 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 400                                    int count, int *eof, void *data)
 401 {
 402         struct obd_device *obd = data;
 403
 404         if (obd == NULL)
 405                 return 0;
 406
 407         return snprintf(page, count, LPU64"\n",
 408                         obd->u.cli.cl_oscc.oscc_last_id);
 409 }
 410
 411 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 412                            int *eof, void *data)
 413 {
 414         struct obd_device *obd = data;
 415
 416         if (obd == NULL)
 417                 return 0;
 418
 419         return snprintf(page, count, "%d\n",
 420                         obd->u.cli.cl_checksum ? 1 : 0);
 421 }
 422
 423 static int osc_wr_checksum(struct file *file, const char *buffer,
 424                            unsigned long count, void *data)
 425 {
 426         struct obd_device *obd = data;
 427         int val, rc;
 428
 429         if (obd == NULL)
 430                 return 0;
 431
 432         rc = lprocfs_write_helper(buffer, count, &val);
 433         if (rc)
 434                 return rc;
 435
 436         obd->u.cli.cl_checksum = (val ? 1 : 0);
 437
 438         return count;
 439 }
 440
 441 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 442                                 int *eof, void *data)
 443 {
 444         struct obd_device *obd = data;
 445         int i, len =0;
 446         DECLARE_CKSUM_NAME;
 447
 448         if (obd == NULL)
 449                 return 0;
 450
 451         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 452                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 453                         continue;
 454                 if (obd->u.cli.cl_cksum_type == (1 << i))
 455                         len += snprintf(page + len, count - len, "[%s] ",
 456                                         cksum_name[i]);
 457                 else
 458                         len += snprintf(page + len, count - len, "%s ",
 459                                         cksum_name[i]);
 460         }
 461         if (len < count)
 462                 len += sprintf(page + len, "\n");
 463         return len;
 464 }
 465
 466 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 467                                 unsigned long count, void *data)
 468 {
 469         struct obd_device *obd = data;
 470         int i;
 471         DECLARE_CKSUM_NAME;
 472         char kernbuf[10];
 473
 474         if (obd == NULL)
 475                 return 0;
 476
 477         if (count > sizeof(kernbuf) - 1)
 478                 return -EINVAL;
 479         if (cfs_copy_from_user(kernbuf, buffer, count))
 480                 return -EFAULT;
 481         if (count > 0 && kernbuf[count - 1] == '\n')
 482                 kernbuf[count - 1] = '\0';
 483         else
 484                 kernbuf[count] = '\0';
 485
 486         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 487                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 488                         continue;
 489                 if (!strcmp(kernbuf, cksum_name[i])) {
 490                        obd->u.cli.cl_cksum_type = 1 << i;
 491                        return count;
 492                 }
 493         }
 494         return -EINVAL;
 495 }
 496
 497 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 498                                int *eof, void *data)
 499 {
 500         struct obd_device *obd = data;
 501
 502         return snprintf(page, count, "%u\n",
 503                         cfs_atomic_read(&obd->u.cli.cl_resends));
 504 }
 505
 506 static int osc_wr_resend_count(struct file *file, const char *buffer,
 507                                unsigned long count, void *data)
 508 {
 509         struct obd_device *obd = data;
 510         int val, rc;
 511
 512         rc = lprocfs_write_helper(buffer, count, &val);
 513         if (rc)
 514                 return rc;
 515
 516         if (val < 0)
 517                return -EINVAL;
 518
 519         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 520
 521         return count;
 522 }
 523
 524 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 525                                      int count, int *eof, void *data)
 526 {
 527         struct obd_device *obd = data;
 528         struct osc_device *od  = obd2osc_dev(obd);
 529
 530         return snprintf(page, count, "%u\n", od->od_contention_time);
 531 }
 532
 533 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 534                                      unsigned long count, void *data)
 535 {
 536         struct obd_device *obd = data;
 537         struct osc_device *od  = obd2osc_dev(obd);
 538
 539         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 540                 count;
 541 }
 542
 543 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 544                                     int count, int *eof, void *data)
 545 {
 546         struct obd_device *obd = data;
 547         struct osc_device *od  = obd2osc_dev(obd);
 548
 549         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 550 }
 551
 552 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 553                                     unsigned long count, void *data)
 554 {
 555         struct obd_device *obd = data;
 556         struct osc_device *od  = obd2osc_dev(obd);
 557
 558         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 559                 count;
 560 }
 561
 562 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 563                                      int count, int *eof, void *data)
 564 {
 565         struct obd_device *obd = data;
 566         return snprintf(page, count, "%u\n",
 567                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 568 }
 569
 570 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 571         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 572         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 573         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 574         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 575         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 576         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 577         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 578         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 579         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 580         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 581         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 582         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 583         { "active",          osc_rd_active,
 584                              osc_wr_active, 0 },
 585         { "max_pages_per_rpc", lprocfs_obd_rd_max_pages_per_rpc,
 586                                lprocfs_obd_wr_max_pages_per_rpc, 0 },
 587         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 588                                 osc_wr_max_rpcs_in_flight, 0 },
 589         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 590         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 591         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 592         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 593                              osc_wr_cur_grant_bytes, 0 },
 594         { "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
 595         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 596                                    osc_wr_grant_shrink_interval, 0 },
 597         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 598         { "max_create_count", osc_rd_max_create_count,
 599                               osc_wr_max_create_count, 0},
 600         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 601         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 602         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 603         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 604         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 605         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 606         { "contention_seconds", osc_rd_contention_seconds,
 607                                 osc_wr_contention_seconds, 0 },
 608         { "lockless_truncate",  osc_rd_lockless_truncate,
 609                                 osc_wr_lockless_truncate, 0 },
 610         { "import",          lprocfs_rd_import,        lprocfs_wr_import, 0 },
 611         { "state",           lprocfs_rd_state,         0, 0 },
 612         { "pinger_recov",    lprocfs_rd_pinger_recov,
 613                              lprocfs_wr_pinger_recov,  0, 0 },
 614         { 0 }
 615 };
 616
 617 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 618         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 619         { 0 }
 620 };
 621
 622 #define pct(a,b) (b ? a * 100 / b : 0)
 623
 624 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 625 {
 626         struct timeval now;
 627         struct obd_device *dev = seq->private;
 628         struct client_obd *cli = &dev->u.cli;
 629         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 630         int i;
 631
 632         cfs_gettimeofday(&now);
 633
 634         client_obd_list_lock(&cli->cl_loi_list_lock);
 635
 636         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 637                    now.tv_sec, now.tv_usec);
 638         seq_printf(seq, "read RPCs in flight:  %d\n",
 639                    cli->cl_r_in_flight);
 640         seq_printf(seq, "write RPCs in flight: %d\n",
 641                    cli->cl_w_in_flight);
 642         seq_printf(seq, "pending write pages:  %d\n",
 643                    cli->cl_pending_w_pages);
 644         seq_printf(seq, "pending read pages:   %d\n",
 645                    cli->cl_pending_r_pages);
 646
 647         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 648         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 649         seq_printf(seq, "       rpcs   %% cum %%\n");
 650
 651         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 652         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 653
 654         read_cum = 0;
 655         write_cum = 0;
 656         for (i = 0; i < OBD_HIST_MAX; i++) {
 657                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 658                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 659                 read_cum += r;
 660                 write_cum += w;
 661                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 662                                  1 << i, r, pct(r, read_tot),
 663                                  pct(read_cum, read_tot), w,
 664                                  pct(w, write_tot),
 665                                  pct(write_cum, write_tot));
 666                 if (read_cum == read_tot && write_cum == write_tot)
 667                         break;
 668         }
 669
 670         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 671         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 672         seq_printf(seq, "       rpcs   %% cum %%\n");
 673
 674         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 675         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 676
 677         read_cum = 0;
 678         write_cum = 0;
 679         for (i = 0; i < OBD_HIST_MAX; i++) {
 680                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 681                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 682                 read_cum += r;
 683                 write_cum += w;
 684                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 685                                  i, r, pct(r, read_tot),
 686                                  pct(read_cum, read_tot), w,
 687                                  pct(w, write_tot),
 688                                  pct(write_cum, write_tot));
 689                 if (read_cum == read_tot && write_cum == write_tot)
 690                         break;
 691         }
 692
 693         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 694         seq_printf(seq, "offset                rpcs   %% cum %% |");
 695         seq_printf(seq, "       rpcs   %% cum %%\n");
 696
 697         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 698         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 699
 700         read_cum = 0;
 701         write_cum = 0;
 702         for (i = 0; i < OBD_HIST_MAX; i++) {
 703                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 704                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 705                 read_cum += r;
 706                 write_cum += w;
 707                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 708                            (i == 0) ? 0 : 1 << (i - 1),
 709                            r, pct(r, read_tot), pct(read_cum, read_tot),
 710                            w, pct(w, write_tot), pct(write_cum, write_tot));
 711                 if (read_cum == read_tot && write_cum == write_tot)
 712                         break;
 713         }
 714
 715         client_obd_list_unlock(&cli->cl_loi_list_lock);
 716
 717         return 0;
 718 }
 719 #undef pct
 720
 721 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 722                                        size_t len, loff_t *off)
 723 {
 724         struct seq_file *seq = file->private_data;
 725         struct obd_device *dev = seq->private;
 726         struct client_obd *cli = &dev->u.cli;
 727
 728         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 729         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 730         lprocfs_oh_clear(&cli->cl_read_page_hist);
 731         lprocfs_oh_clear(&cli->cl_write_page_hist);
 732         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 733         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 734
 735         return len;
 736 }
 737
 738 LPROC_SEQ_FOPS(osc_rpc_stats);
 739
 740 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 741 {
 742         struct timeval now;
 743         struct obd_device *dev = seq->private;
 744         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 745
 746         cfs_gettimeofday(&now);
 747
 748         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 749                    now.tv_sec, now.tv_usec);
 750         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 751                    stats->os_lockless_writes);
 752         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 753                    stats->os_lockless_reads);
 754         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 755                    stats->os_lockless_truncates);
 756         return 0;
 757 }
 758
 759 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 760                                    size_t len, loff_t *off)
 761 {
 762         struct seq_file *seq = file->private_data;
 763         struct obd_device *dev = seq->private;
 764         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 765
 766         memset(stats, 0, sizeof(*stats));
 767         return len;
 768 }
 769
 770 LPROC_SEQ_FOPS(osc_stats);
 771
 772 int lproc_osc_attach_seqstat(struct obd_device *dev)
 773 {
 774         int rc;
 775
 776         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0444,
 777                                 &osc_stats_fops, dev);
 778         if (rc == 0)
 779                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 780                                             &osc_rpc_stats_fops, dev);
 781         return rc;
 782 }
 783
 784 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 785 {
 786         lvars->module_vars = lprocfs_osc_module_vars;
 787         lvars->obd_vars    = lprocfs_osc_obd_vars;
 788 }
 789 #endif /* LPROCFS */