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, 2013, Intel Corporation.
  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         /* opposite senses */
  72         if (dev->u.cli.cl_import->imp_deactive == val)
  73                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  74         else
  75                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  76
  77         return count;
  78 }
  79
  80 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
  81                                      int count, int *eof, void *data)
  82 {
  83         struct obd_device *dev = data;
  84         struct client_obd *cli = &dev->u.cli;
  85         int rc;
  86
  87         client_obd_list_lock(&cli->cl_loi_list_lock);
  88         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
  89         client_obd_list_unlock(&cli->cl_loi_list_lock);
  90         return rc;
  91 }
  92
  93 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
  94                                      unsigned long count, void *data)
  95 {
  96         struct obd_device *dev = data;
  97         struct client_obd *cli = &dev->u.cli;
  98         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
  99         int val, rc;
 100
 101         rc = lprocfs_write_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         if (val < 1 || val > OSC_MAX_RIF_MAX)
 106                 return -ERANGE;
 107
 108         LPROCFS_CLIMP_CHECK(dev);
 109         if (pool && val > cli->cl_max_rpcs_in_flight)
 110                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 111
 112         client_obd_list_lock(&cli->cl_loi_list_lock);
 113         cli->cl_max_rpcs_in_flight = val;
 114         client_obd_list_unlock(&cli->cl_loi_list_lock);
 115
 116         LPROCFS_CLIMP_EXIT(dev);
 117         return count;
 118 }
 119
 120 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 121                                int *eof, void *data)
 122 {
 123         struct obd_device *dev = data;
 124         struct client_obd *cli = &dev->u.cli;
 125         long val;
 126         int mult;
 127
 128         client_obd_list_lock(&cli->cl_loi_list_lock);
 129         val = cli->cl_dirty_max;
 130         client_obd_list_unlock(&cli->cl_loi_list_lock);
 131
 132         mult = 1 << 20;
 133         return lprocfs_read_frac_helper(page, count, val, mult);
 134 }
 135
 136 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 137                                unsigned long count, void *data)
 138 {
 139         struct obd_device *dev = data;
 140         struct client_obd *cli = &dev->u.cli;
 141         int pages_number, mult, rc;
 142
 143         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 144         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 145         if (rc)
 146                 return rc;
 147
 148         if (pages_number <= 0 ||
 149             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 150             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 151                 return -ERANGE;
 152
 153         client_obd_list_lock(&cli->cl_loi_list_lock);
 154         cli->cl_dirty_max = (obd_count)(pages_number << PAGE_CACHE_SHIFT);
 155         osc_wake_cache_waiters(cli);
 156         client_obd_list_unlock(&cli->cl_loi_list_lock);
 157
 158         return count;
 159 }
 160
 161 static int osc_rd_cached_mb(char *page, char **start, off_t off, int count,
 162                             int *eof, void *data)
 163 {
 164         struct obd_device *dev = data;
 165         struct client_obd *cli = &dev->u.cli;
 166         int shift = 20 - PAGE_CACHE_SHIFT;
 167         int rc;
 168
 169         rc = snprintf(page, count,
 170                       "used_mb: %d\n"
 171                       "busy_cnt: %d\n",
 172                       (cfs_atomic_read(&cli->cl_lru_in_list) +
 173                         cfs_atomic_read(&cli->cl_lru_busy)) >> shift,
 174                       cfs_atomic_read(&cli->cl_lru_busy));
 175
 176         return rc;
 177 }
 178
 179 /* shrink the number of caching pages to a specific number */
 180 static int osc_wr_cached_mb(struct file *file, const char *buffer,
 181                             unsigned long nob, void *data)
 182 {
 183         struct obd_device *dev = data;
 184         struct client_obd *cli = &dev->u.cli;
 185         int pages_number, mult, rc;
 186         size_t count = nob;
 187
 188         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 189         buffer = lprocfs_find_named_value(buffer, "used_mb:", &count);
 190         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 191         if (rc)
 192                 return rc;
 193
 194         if (pages_number < 0)
 195                 return -ERANGE;
 196
 197         rc = cfs_atomic_read(&cli->cl_lru_in_list) - pages_number;
 198         if (rc > 0) {
 199                 struct lu_env *env;
 200                 int refcheck;
 201
 202                 env = cl_env_get(&refcheck);
 203                 if (!IS_ERR(env)) {
 204                         (void)osc_lru_shrink(env, cli, rc, true);
 205                         cl_env_put(env, &refcheck);
 206                 }
 207         }
 208
 209         return count;
 210 }
 211
 212 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 213                                   int count, int *eof, void *data)
 214 {
 215         struct obd_device *dev = data;
 216         struct client_obd *cli = &dev->u.cli;
 217         int rc;
 218
 219         client_obd_list_lock(&cli->cl_loi_list_lock);
 220         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 221         client_obd_list_unlock(&cli->cl_loi_list_lock);
 222         return rc;
 223 }
 224
 225 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 226                                   int count, int *eof, void *data)
 227 {
 228         struct obd_device *dev = data;
 229         struct client_obd *cli = &dev->u.cli;
 230         int rc;
 231
 232         client_obd_list_lock(&cli->cl_loi_list_lock);
 233         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 234         client_obd_list_unlock(&cli->cl_loi_list_lock);
 235         return rc;
 236 }
 237
 238 static int osc_wr_cur_grant_bytes(struct file *file, const char *buffer,
 239                                   unsigned long count, void *data)
 240 {
 241         struct obd_device *obd = data;
 242         struct client_obd *cli = &obd->u.cli;
 243         int                rc;
 244         __u64              val;
 245
 246         if (obd == NULL)
 247                 return 0;
 248
 249         rc = lprocfs_write_u64_helper(buffer, count, &val);
 250         if (rc)
 251                 return rc;
 252
 253         /* this is only for shrinking grant */
 254         client_obd_list_lock(&cli->cl_loi_list_lock);
 255         if (val >= cli->cl_avail_grant) {
 256                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 257                 return 0;
 258         }
 259         client_obd_list_unlock(&cli->cl_loi_list_lock);
 260
 261         LPROCFS_CLIMP_CHECK(obd);
 262         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 263                 rc = osc_shrink_grant_to_target(cli, val);
 264         LPROCFS_CLIMP_EXIT(obd);
 265         if (rc)
 266                 return rc;
 267         return count;
 268 }
 269
 270 static int osc_rd_cur_lost_grant_bytes(char *page, char **start, off_t off,
 271                                        int count, int *eof, void *data)
 272 {
 273         struct obd_device *dev = data;
 274         struct client_obd *cli = &dev->u.cli;
 275         int rc;
 276
 277         client_obd_list_lock(&cli->cl_loi_list_lock);
 278         rc = snprintf(page, count, "%lu\n", cli->cl_lost_grant);
 279         client_obd_list_unlock(&cli->cl_loi_list_lock);
 280         return rc;
 281 }
 282
 283 static int osc_rd_grant_shrink_interval(char *page, char **start, off_t off,
 284                                         int count, int *eof, void *data)
 285 {
 286         struct obd_device *obd = data;
 287
 288         if (obd == NULL)
 289                 return 0;
 290         return snprintf(page, count, "%d\n",
 291                         obd->u.cli.cl_grant_shrink_interval);
 292 }
 293
 294 static int osc_wr_grant_shrink_interval(struct file *file, const char *buffer,
 295                                         unsigned long count, void *data)
 296 {
 297         struct obd_device *obd = data;
 298         int val, rc;
 299
 300         if (obd == NULL)
 301                 return 0;
 302
 303         rc = lprocfs_write_helper(buffer, count, &val);
 304         if (rc)
 305                 return rc;
 306
 307         if (val <= 0)
 308                 return -ERANGE;
 309
 310         obd->u.cli.cl_grant_shrink_interval = val;
 311
 312         return count;
 313 }
 314
 315 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 316                            int *eof, void *data)
 317 {
 318         struct obd_device *obd = data;
 319
 320         if (obd == NULL)
 321                 return 0;
 322
 323         return snprintf(page, count, "%d\n",
 324                         obd->u.cli.cl_checksum ? 1 : 0);
 325 }
 326
 327 static int osc_wr_checksum(struct file *file, const char *buffer,
 328                            unsigned long count, void *data)
 329 {
 330         struct obd_device *obd = data;
 331         int val, rc;
 332
 333         if (obd == NULL)
 334                 return 0;
 335
 336         rc = lprocfs_write_helper(buffer, count, &val);
 337         if (rc)
 338                 return rc;
 339
 340         obd->u.cli.cl_checksum = (val ? 1 : 0);
 341
 342         return count;
 343 }
 344
 345 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 346                                 int *eof, void *data)
 347 {
 348         struct obd_device *obd = data;
 349         int i, len =0;
 350         DECLARE_CKSUM_NAME;
 351
 352         if (obd == NULL)
 353                 return 0;
 354
 355         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 356                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 357                         continue;
 358                 if (obd->u.cli.cl_cksum_type == (1 << i))
 359                         len += snprintf(page + len, count - len, "[%s] ",
 360                                         cksum_name[i]);
 361                 else
 362                         len += snprintf(page + len, count - len, "%s ",
 363                                         cksum_name[i]);
 364         }
 365         if (len < count)
 366                 len += sprintf(page + len, "\n");
 367         return len;
 368 }
 369
 370 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 371                                 unsigned long count, void *data)
 372 {
 373         struct obd_device *obd = data;
 374         int i;
 375         DECLARE_CKSUM_NAME;
 376         char kernbuf[10];
 377
 378         if (obd == NULL)
 379                 return 0;
 380
 381         if (count > sizeof(kernbuf) - 1)
 382                 return -EINVAL;
 383         if (copy_from_user(kernbuf, buffer, count))
 384                 return -EFAULT;
 385         if (count > 0 && kernbuf[count - 1] == '\n')
 386                 kernbuf[count - 1] = '\0';
 387         else
 388                 kernbuf[count] = '\0';
 389
 390         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 391                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 392                         continue;
 393                 if (!strcmp(kernbuf, cksum_name[i])) {
 394                        obd->u.cli.cl_cksum_type = 1 << i;
 395                        return count;
 396                 }
 397         }
 398         return -EINVAL;
 399 }
 400
 401 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 402                                int *eof, void *data)
 403 {
 404         struct obd_device *obd = data;
 405
 406         return snprintf(page, count, "%u\n",
 407                         cfs_atomic_read(&obd->u.cli.cl_resends));
 408 }
 409
 410 static int osc_wr_resend_count(struct file *file, const char *buffer,
 411                                unsigned long count, void *data)
 412 {
 413         struct obd_device *obd = data;
 414         int val, rc;
 415
 416         rc = lprocfs_write_helper(buffer, count, &val);
 417         if (rc)
 418                 return rc;
 419
 420         if (val < 0)
 421                return -EINVAL;
 422
 423         cfs_atomic_set(&obd->u.cli.cl_resends, val);
 424
 425         return count;
 426 }
 427
 428 static int osc_rd_contention_seconds(char *page, char **start, off_t off,
 429                                      int count, int *eof, void *data)
 430 {
 431         struct obd_device *obd = data;
 432         struct osc_device *od  = obd2osc_dev(obd);
 433
 434         return snprintf(page, count, "%u\n", od->od_contention_time);
 435 }
 436
 437 static int osc_wr_contention_seconds(struct file *file, const char *buffer,
 438                                      unsigned long count, void *data)
 439 {
 440         struct obd_device *obd = data;
 441         struct osc_device *od  = obd2osc_dev(obd);
 442
 443         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 444                 count;
 445 }
 446
 447 static int osc_rd_lockless_truncate(char *page, char **start, off_t off,
 448                                     int count, int *eof, void *data)
 449 {
 450         struct obd_device *obd = data;
 451         struct osc_device *od  = obd2osc_dev(obd);
 452
 453         return snprintf(page, count, "%u\n", od->od_lockless_truncate);
 454 }
 455
 456 static int osc_wr_lockless_truncate(struct file *file, const char *buffer,
 457                                     unsigned long count, void *data)
 458 {
 459         struct obd_device *obd = data;
 460         struct osc_device *od  = obd2osc_dev(obd);
 461
 462         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 463                 count;
 464 }
 465
 466 static int osc_rd_destroys_in_flight(char *page, char **start, off_t off,
 467                                      int count, int *eof, void *data)
 468 {
 469         struct obd_device *obd = data;
 470         return snprintf(page, count, "%u\n",
 471                         cfs_atomic_read(&obd->u.cli.cl_destroy_in_flight));
 472 }
 473
 474 static int lprocfs_osc_wr_max_pages_per_rpc(struct file *file,
 475         const char *buffer, unsigned long count, void *data)
 476 {
 477         struct obd_device *dev = data;
 478         struct client_obd *cli = &dev->u.cli;
 479         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 480         int chunk_mask, rc;
 481         __u64 val;
 482
 483         rc = lprocfs_write_u64_helper(buffer, count, &val);
 484         if (rc)
 485                 return rc;
 486
 487         /* if the max_pages is specified in bytes, convert to pages */
 488         if (val >= ONE_MB_BRW_SIZE)
 489                 val >>= PAGE_CACHE_SHIFT;
 490
 491         LPROCFS_CLIMP_CHECK(dev);
 492
 493         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 494         /* max_pages_per_rpc must be chunk aligned */
 495         val = (val + ~chunk_mask) & chunk_mask;
 496         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 497                 LPROCFS_CLIMP_EXIT(dev);
 498                 return -ERANGE;
 499         }
 500         client_obd_list_lock(&cli->cl_loi_list_lock);
 501         cli->cl_max_pages_per_rpc = val;
 502         client_obd_list_unlock(&cli->cl_loi_list_lock);
 503
 504         LPROCFS_CLIMP_EXIT(dev);
 505         return count;
 506 }
 507
 508 static int osc_rd_unstable_stats(char *page, char **start, off_t off,
 509                                 int count, int *eof, void *data)
 510 {
 511         struct obd_device *dev = data;
 512         struct client_obd *cli = &dev->u.cli;
 513         int pages, mb;
 514
 515         pages = cfs_atomic_read(&cli->cl_unstable_count);
 516         mb    = (pages * PAGE_CACHE_SIZE) >> 20;
 517
 518         return snprintf(page, count,
 519                         "unstable_pages: %8d\n"
 520                         "unstable_mb:    %8d\n",
 521                         pages, mb);
 522 }
 523
 524 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 525         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 526         { "ping",            0, lprocfs_wr_ping,     0, 0, 0222 },
 527         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 528         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 529         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 530         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 531         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 532         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 533         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 534         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 535         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 536         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 537         { "active",          osc_rd_active,
 538                              osc_wr_active, 0 },
 539         { "max_pages_per_rpc", lprocfs_obd_rd_max_pages_per_rpc,
 540                                lprocfs_osc_wr_max_pages_per_rpc, 0 },
 541         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 542                                 osc_wr_max_rpcs_in_flight, 0 },
 543         { "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
 544         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 545         { "osc_cached_mb",   osc_rd_cached_mb,     osc_wr_cached_mb, 0 },
 546         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 547         { "cur_grant_bytes", osc_rd_cur_grant_bytes,
 548                              osc_wr_cur_grant_bytes, 0 },
 549         { "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
 550         { "grant_shrink_interval", osc_rd_grant_shrink_interval,
 551                                    osc_wr_grant_shrink_interval, 0 },
 552         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 553         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 554         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 555         { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
 556         { "contention_seconds", osc_rd_contention_seconds,
 557                                 osc_wr_contention_seconds, 0 },
 558         { "lockless_truncate",  osc_rd_lockless_truncate,
 559                                 osc_wr_lockless_truncate, 0 },
 560         { "import",          lprocfs_rd_import,        lprocfs_wr_import, 0 },
 561         { "state",           lprocfs_rd_state,         0, 0 },
 562         { "pinger_recov",    lprocfs_rd_pinger_recov,
 563                              lprocfs_wr_pinger_recov,  0, 0 },
 564         { "unstable_stats",  osc_rd_unstable_stats, 0, 0},
 565
 566         { 0 }
 567 };
 568
 569 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 570         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 571         { 0 }
 572 };
 573
 574 #define pct(a,b) (b ? a * 100 / b : 0)
 575
 576 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 577 {
 578         struct timeval now;
 579         struct obd_device *dev = seq->private;
 580         struct client_obd *cli = &dev->u.cli;
 581         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 582         int i;
 583
 584         do_gettimeofday(&now);
 585
 586         client_obd_list_lock(&cli->cl_loi_list_lock);
 587
 588         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 589                    now.tv_sec, now.tv_usec);
 590         seq_printf(seq, "read RPCs in flight:  %d\n",
 591                    cli->cl_r_in_flight);
 592         seq_printf(seq, "write RPCs in flight: %d\n",
 593                    cli->cl_w_in_flight);
 594         seq_printf(seq, "pending write pages:  %d\n",
 595                    cfs_atomic_read(&cli->cl_pending_w_pages));
 596         seq_printf(seq, "pending read pages:   %d\n",
 597                    cfs_atomic_read(&cli->cl_pending_r_pages));
 598
 599         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 600         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 601         seq_printf(seq, "       rpcs   %% cum %%\n");
 602
 603         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 604         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 605
 606         read_cum = 0;
 607         write_cum = 0;
 608         for (i = 0; i < OBD_HIST_MAX; i++) {
 609                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 610                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 611                 read_cum += r;
 612                 write_cum += w;
 613                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 614                                  1 << i, r, pct(r, read_tot),
 615                                  pct(read_cum, read_tot), w,
 616                                  pct(w, write_tot),
 617                                  pct(write_cum, write_tot));
 618                 if (read_cum == read_tot && write_cum == write_tot)
 619                         break;
 620         }
 621
 622         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 623         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 624         seq_printf(seq, "       rpcs   %% cum %%\n");
 625
 626         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 627         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 628
 629         read_cum = 0;
 630         write_cum = 0;
 631         for (i = 0; i < OBD_HIST_MAX; i++) {
 632                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 633                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 634                 read_cum += r;
 635                 write_cum += w;
 636                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 637                                  i, r, pct(r, read_tot),
 638                                  pct(read_cum, read_tot), w,
 639                                  pct(w, write_tot),
 640                                  pct(write_cum, write_tot));
 641                 if (read_cum == read_tot && write_cum == write_tot)
 642                         break;
 643         }
 644
 645         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 646         seq_printf(seq, "offset                rpcs   %% cum %% |");
 647         seq_printf(seq, "       rpcs   %% cum %%\n");
 648
 649         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 650         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 651
 652         read_cum = 0;
 653         write_cum = 0;
 654         for (i = 0; i < OBD_HIST_MAX; i++) {
 655                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 656                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 657                 read_cum += r;
 658                 write_cum += w;
 659                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 660                            (i == 0) ? 0 : 1 << (i - 1),
 661                            r, pct(r, read_tot), pct(read_cum, read_tot),
 662                            w, pct(w, write_tot), pct(write_cum, write_tot));
 663                 if (read_cum == read_tot && write_cum == write_tot)
 664                         break;
 665         }
 666
 667         client_obd_list_unlock(&cli->cl_loi_list_lock);
 668
 669         return 0;
 670 }
 671 #undef pct
 672
 673 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 674                                        size_t len, loff_t *off)
 675 {
 676         struct seq_file *seq = file->private_data;
 677         struct obd_device *dev = seq->private;
 678         struct client_obd *cli = &dev->u.cli;
 679
 680         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 681         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 682         lprocfs_oh_clear(&cli->cl_read_page_hist);
 683         lprocfs_oh_clear(&cli->cl_write_page_hist);
 684         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 685         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 686
 687         return len;
 688 }
 689
 690 LPROC_SEQ_FOPS(osc_rpc_stats);
 691
 692 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 693 {
 694         struct timeval now;
 695         struct obd_device *dev = seq->private;
 696         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 697
 698         do_gettimeofday(&now);
 699
 700         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 701                    now.tv_sec, now.tv_usec);
 702         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 703                    stats->os_lockless_writes);
 704         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 705                    stats->os_lockless_reads);
 706         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 707                    stats->os_lockless_truncates);
 708         return 0;
 709 }
 710
 711 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 712                                    size_t len, loff_t *off)
 713 {
 714         struct seq_file *seq = file->private_data;
 715         struct obd_device *dev = seq->private;
 716         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 717
 718         memset(stats, 0, sizeof(*stats));
 719         return len;
 720 }
 721
 722 LPROC_SEQ_FOPS(osc_stats);
 723
 724 int lproc_osc_attach_seqstat(struct obd_device *dev)
 725 {
 726         int rc;
 727
 728         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 729                                 &osc_stats_fops, dev);
 730         if (rc == 0)
 731                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 732                                             &osc_rpc_stats_fops, dev);
 733
 734         return rc;
 735 }
 736
 737 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 738 {
 739         lvars->module_vars = lprocfs_osc_module_vars;
 740         lvars->obd_vars    = lprocfs_osc_obd_vars;
 741 }
 742 #endif /* LPROCFS */