drivers/staging/lustre/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, 2012, 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 <asm/statfs.h>
  39 #include <obd_cksum.h>
  40 #include <obd_class.h>
  41 #include <lprocfs_status.h>
  42 #include <linux/seq_file.h>
  43 #include "osc_internal.h"
  44
  45 static int osc_active_seq_show(struct seq_file *m, void *v)
  46 {
  47         struct obd_device *dev = m->private;
  48         int rc;
  49
  50         LPROCFS_CLIMP_CHECK(dev);
  51         rc = seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  52         LPROCFS_CLIMP_EXIT(dev);
  53         return rc;
  54 }
  55
  56 static ssize_t osc_active_seq_write(struct file *file, const char *buffer,
  57                                     size_t count, loff_t *off)
  58 {
  59         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  60         int val, rc;
  61
  62         rc = lprocfs_write_helper(buffer, count, &val);
  63         if (rc)
  64                 return rc;
  65         if (val < 0 || val > 1)
  66                 return -ERANGE;
  67
  68         /* opposite senses */
  69         if (dev->u.cli.cl_import->imp_deactive == val)
  70                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  71         else
  72                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  73
  74         return count;
  75 }
  76 LPROC_SEQ_FOPS(osc_active);
  77
  78 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  79 {
  80         struct obd_device *dev = m->private;
  81         struct client_obd *cli = &dev->u.cli;
  82         int rc;
  83
  84         client_obd_list_lock(&cli->cl_loi_list_lock);
  85         rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  86         client_obd_list_unlock(&cli->cl_loi_list_lock);
  87         return rc;
  88 }
  89
  90 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  91                         const char *buffer, size_t count, loff_t *off)
  92 {
  93         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  94         struct client_obd *cli = &dev->u.cli;
  95         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
  96         int val, rc;
  97
  98         rc = lprocfs_write_helper(buffer, count, &val);
  99         if (rc)
 100                 return rc;
 101
 102         if (val < 1 || val > OSC_MAX_RIF_MAX)
 103                 return -ERANGE;
 104
 105         LPROCFS_CLIMP_CHECK(dev);
 106         if (pool && val > cli->cl_max_rpcs_in_flight)
 107                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 108
 109         client_obd_list_lock(&cli->cl_loi_list_lock);
 110         cli->cl_max_rpcs_in_flight = val;
 111         client_obd_list_unlock(&cli->cl_loi_list_lock);
 112
 113         LPROCFS_CLIMP_EXIT(dev);
 114         return count;
 115 }
 116 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 117
 118 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 119 {
 120         struct obd_device *dev = m->private;
 121         struct client_obd *cli = &dev->u.cli;
 122         long val;
 123         int mult;
 124
 125         client_obd_list_lock(&cli->cl_loi_list_lock);
 126         val = cli->cl_dirty_max;
 127         client_obd_list_unlock(&cli->cl_loi_list_lock);
 128
 129         mult = 1 << 20;
 130         return lprocfs_seq_read_frac_helper(m, val, mult);
 131 }
 132
 133 static ssize_t osc_max_dirty_mb_seq_write(struct file *file, const char *buffer,
 134                                       size_t count, loff_t *off)
 135 {
 136         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 137         struct client_obd *cli = &dev->u.cli;
 138         int pages_number, mult, rc;
 139
 140         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 141         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 142         if (rc)
 143                 return rc;
 144
 145         if (pages_number <= 0 ||
 146             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
 147             pages_number > totalram_pages / 4) /* 1/4 of RAM */
 148                 return -ERANGE;
 149
 150         client_obd_list_lock(&cli->cl_loi_list_lock);
 151         cli->cl_dirty_max = (obd_count)(pages_number << PAGE_CACHE_SHIFT);
 152         osc_wake_cache_waiters(cli);
 153         client_obd_list_unlock(&cli->cl_loi_list_lock);
 154
 155         return count;
 156 }
 157 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 158
 159 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 160 {
 161         struct obd_device *dev = m->private;
 162         struct client_obd *cli = &dev->u.cli;
 163         int shift = 20 - PAGE_CACHE_SHIFT;
 164         int rc;
 165
 166         rc = seq_printf(m,
 167                       "used_mb: %d\n"
 168                       "busy_cnt: %d\n",
 169                       (atomic_read(&cli->cl_lru_in_list) +
 170                         atomic_read(&cli->cl_lru_busy)) >> shift,
 171                       atomic_read(&cli->cl_lru_busy));
 172
 173         return rc;
 174 }
 175
 176 /* shrink the number of caching pages to a specific number */
 177 static ssize_t osc_cached_mb_seq_write(struct file *file, const char *buffer,
 178                                    size_t count, loff_t *off)
 179 {
 180         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 181         struct client_obd *cli = &dev->u.cli;
 182         int pages_number, mult, rc;
 183
 184         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 185         buffer = lprocfs_find_named_value(buffer, "used_mb:", &count);
 186         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 187         if (rc)
 188                 return rc;
 189
 190         if (pages_number < 0)
 191                 return -ERANGE;
 192
 193         rc = atomic_read(&cli->cl_lru_in_list) - pages_number;
 194         if (rc > 0)
 195                 (void)osc_lru_shrink(cli, rc);
 196
 197         return count;
 198 }
 199 LPROC_SEQ_FOPS(osc_cached_mb);
 200
 201 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 202 {
 203         struct obd_device *dev = m->private;
 204         struct client_obd *cli = &dev->u.cli;
 205         int rc;
 206
 207         client_obd_list_lock(&cli->cl_loi_list_lock);
 208         rc = seq_printf(m, "%lu\n", cli->cl_dirty);
 209         client_obd_list_unlock(&cli->cl_loi_list_lock);
 210         return rc;
 211 }
 212 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 213
 214 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 215 {
 216         struct obd_device *dev = m->private;
 217         struct client_obd *cli = &dev->u.cli;
 218         int rc;
 219
 220         client_obd_list_lock(&cli->cl_loi_list_lock);
 221         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 222         client_obd_list_unlock(&cli->cl_loi_list_lock);
 223         return rc;
 224 }
 225
 226 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file, const char *buffer,
 227                                   size_t count, loff_t *off)
 228 {
 229         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 230         struct client_obd *cli = &obd->u.cli;
 231         int             rc;
 232         __u64         val;
 233
 234         if (obd == NULL)
 235                 return 0;
 236
 237         rc = lprocfs_write_u64_helper(buffer, count, &val);
 238         if (rc)
 239                 return rc;
 240
 241         /* this is only for shrinking grant */
 242         client_obd_list_lock(&cli->cl_loi_list_lock);
 243         if (val >= cli->cl_avail_grant) {
 244                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 245                 return 0;
 246         }
 247         client_obd_list_unlock(&cli->cl_loi_list_lock);
 248
 249         LPROCFS_CLIMP_CHECK(obd);
 250         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 251                 rc = osc_shrink_grant_to_target(cli, val);
 252         LPROCFS_CLIMP_EXIT(obd);
 253         if (rc)
 254                 return rc;
 255         return count;
 256 }
 257 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 258
 259 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 260 {
 261         struct obd_device *dev = m->private;
 262         struct client_obd *cli = &dev->u.cli;
 263         int rc;
 264
 265         client_obd_list_lock(&cli->cl_loi_list_lock);
 266         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 267         client_obd_list_unlock(&cli->cl_loi_list_lock);
 268         return rc;
 269 }
 270 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 271
 272 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 273 {
 274         struct obd_device *obd = m->private;
 275
 276         if (obd == NULL)
 277                 return 0;
 278         return seq_printf(m, "%d\n",
 279                         obd->u.cli.cl_grant_shrink_interval);
 280 }
 281
 282 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 283                                 const char *buffer, size_t count, loff_t *off)
 284 {
 285         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 286         int val, rc;
 287
 288         if (obd == NULL)
 289                 return 0;
 290
 291         rc = lprocfs_write_helper(buffer, count, &val);
 292         if (rc)
 293                 return rc;
 294
 295         if (val <= 0)
 296                 return -ERANGE;
 297
 298         obd->u.cli.cl_grant_shrink_interval = val;
 299
 300         return count;
 301 }
 302 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 303
 304 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 305 {
 306         struct obd_device *obd = m->private;
 307
 308         if (obd == NULL)
 309                 return 0;
 310
 311         return seq_printf(m, "%d\n",
 312                         obd->u.cli.cl_checksum ? 1 : 0);
 313 }
 314
 315 static ssize_t osc_checksum_seq_write(struct file *file, const char *buffer,
 316                            size_t count, loff_t *off)
 317 {
 318         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 319         int val, rc;
 320
 321         if (obd == NULL)
 322                 return 0;
 323
 324         rc = lprocfs_write_helper(buffer, count, &val);
 325         if (rc)
 326                 return rc;
 327
 328         obd->u.cli.cl_checksum = (val ? 1 : 0);
 329
 330         return count;
 331 }
 332 LPROC_SEQ_FOPS(osc_checksum);
 333
 334 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 335 {
 336         struct obd_device *obd = m->private;
 337         int i;
 338         DECLARE_CKSUM_NAME;
 339
 340         if (obd == NULL)
 341                 return 0;
 342
 343         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 344                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 345                         continue;
 346                 if (obd->u.cli.cl_cksum_type == (1 << i))
 347                         seq_printf(m, "[%s] ", cksum_name[i]);
 348                 else
 349                         seq_printf(m, "%s ", cksum_name[i]);
 350         }
 351         seq_printf(m, "\n");
 352         return 0;
 353 }
 354
 355 static ssize_t osc_checksum_type_seq_write(struct file *file, const char *buffer,
 356                                 size_t count, loff_t *off)
 357 {
 358         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 359         int i;
 360         DECLARE_CKSUM_NAME;
 361         char kernbuf[10];
 362
 363         if (obd == NULL)
 364                 return 0;
 365
 366         if (count > sizeof(kernbuf) - 1)
 367                 return -EINVAL;
 368         if (copy_from_user(kernbuf, buffer, count))
 369                 return -EFAULT;
 370         if (count > 0 && kernbuf[count - 1] == '\n')
 371                 kernbuf[count - 1] = '\0';
 372         else
 373                 kernbuf[count] = '\0';
 374
 375         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 376                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 377                         continue;
 378                 if (!strcmp(kernbuf, cksum_name[i])) {
 379                        obd->u.cli.cl_cksum_type = 1 << i;
 380                        return count;
 381                 }
 382         }
 383         return -EINVAL;
 384 }
 385 LPROC_SEQ_FOPS(osc_checksum_type);
 386
 387 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 388 {
 389         struct obd_device *obd = m->private;
 390
 391         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 392 }
 393
 394 static ssize_t osc_resend_count_seq_write(struct file *file, const char *buffer,
 395                                size_t count, loff_t *off)
 396 {
 397         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 398         int val, rc;
 399
 400         rc = lprocfs_write_helper(buffer, count, &val);
 401         if (rc)
 402                 return rc;
 403
 404         if (val < 0)
 405                return -EINVAL;
 406
 407         atomic_set(&obd->u.cli.cl_resends, val);
 408
 409         return count;
 410 }
 411 LPROC_SEQ_FOPS(osc_resend_count);
 412
 413 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 414 {
 415         struct obd_device *obd = m->private;
 416         struct osc_device *od  = obd2osc_dev(obd);
 417
 418         return seq_printf(m, "%u\n", od->od_contention_time);
 419 }
 420
 421 static ssize_t osc_contention_seconds_seq_write(struct file *file, const char *buffer,
 422                                      size_t count, loff_t *off)
 423 {
 424         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 425         struct osc_device *od  = obd2osc_dev(obd);
 426
 427         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 428                 count;
 429 }
 430 LPROC_SEQ_FOPS(osc_contention_seconds);
 431
 432 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 433 {
 434         struct obd_device *obd = m->private;
 435         struct osc_device *od  = obd2osc_dev(obd);
 436
 437         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 438 }
 439
 440 static ssize_t osc_lockless_truncate_seq_write(struct file *file, const char *buffer,
 441                                     size_t count, loff_t *off)
 442 {
 443         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 444         struct osc_device *od  = obd2osc_dev(obd);
 445
 446         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 447                 count;
 448 }
 449 LPROC_SEQ_FOPS(osc_lockless_truncate);
 450
 451 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 452 {
 453         struct obd_device *obd = m->private;
 454         return seq_printf(m, "%u\n",
 455                         atomic_read(&obd->u.cli.cl_destroy_in_flight));
 456 }
 457 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 458
 459 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 460 {
 461         return lprocfs_obd_rd_max_pages_per_rpc(m, m->private);
 462 }
 463
 464 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 465                                 const char *buffer, size_t count, loff_t *off)
 466 {
 467         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 468         struct client_obd *cli = &dev->u.cli;
 469         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 470         int chunk_mask, rc;
 471         __u64 val;
 472
 473         rc = lprocfs_write_u64_helper(buffer, count, &val);
 474         if (rc)
 475                 return rc;
 476
 477         /* if the max_pages is specified in bytes, convert to pages */
 478         if (val >= ONE_MB_BRW_SIZE)
 479                 val >>= PAGE_CACHE_SHIFT;
 480
 481         LPROCFS_CLIMP_CHECK(dev);
 482
 483         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 484         /* max_pages_per_rpc must be chunk aligned */
 485         val = (val + ~chunk_mask) & chunk_mask;
 486         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 487                 LPROCFS_CLIMP_EXIT(dev);
 488                 return -ERANGE;
 489         }
 490         client_obd_list_lock(&cli->cl_loi_list_lock);
 491         cli->cl_max_pages_per_rpc = val;
 492         client_obd_list_unlock(&cli->cl_loi_list_lock);
 493
 494         LPROCFS_CLIMP_EXIT(dev);
 495         return count;
 496 }
 497 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 498
 499 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 500 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 501 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 502 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 503 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 504 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 505 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 506 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 507 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 508 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 509 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 510 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 511
 512 LPROC_SEQ_FOPS_WR_ONLY(osc, ping);
 513
 514 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 515 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 516
 517 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 518         { "uuid",            &osc_uuid_fops,    0, 0 },
 519         { "ping",            &osc_ping_fops,    0, 0222 },
 520         { "connect_flags",   &osc_connect_flags_fops, 0, 0 },
 521         { "blocksize",       &osc_blksize_fops,     0, 0 },
 522         { "kbytestotal",     &osc_kbytestotal_fops, 0, 0 },
 523         { "kbytesfree",      &osc_kbytesfree_fops,  0, 0 },
 524         { "kbytesavail",     &osc_kbytesavail_fops, 0, 0 },
 525         { "filestotal",      &osc_filestotal_fops,  0, 0 },
 526         { "filesfree",       &osc_filesfree_fops,   0, 0 },
 527         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 528         { "ost_server_uuid", &osc_server_uuid_fops, 0, 0 },
 529         { "ost_conn_uuid",   &osc_conn_uuid_fops, 0, 0 },
 530         { "active",          &osc_active_fops, 0 },
 531         { "max_pages_per_rpc", &osc_obd_max_pages_per_rpc_fops, 0 },
 532         { "max_rpcs_in_flight", &osc_max_rpcs_in_flight_fops, 0 },
 533         { "destroys_in_flight", &osc_destroys_in_flight_fops, 0, 0 },
 534         { "max_dirty_mb",    &osc_max_dirty_mb_fops, 0 },
 535         { "osc_cached_mb",   &osc_cached_mb_fops, 0 },
 536         { "cur_dirty_bytes", &osc_cur_dirty_bytes_fops, 0, 0 },
 537         { "cur_grant_bytes", &osc_cur_grant_bytes_fops, 0 },
 538         { "cur_lost_grant_bytes", &osc_cur_lost_grant_bytes_fops, 0, 0},
 539         { "grant_shrink_interval", &osc_grant_shrink_interval_fops, 0 },
 540         { "checksums",       &osc_checksum_fops, 0 },
 541         { "checksum_type",   &osc_checksum_type_fops, 0 },
 542         { "resend_count",    &osc_resend_count_fops, 0},
 543         { "timeouts",        &osc_timeouts_fops, 0, 0 },
 544         { "contention_seconds", &osc_contention_seconds_fops, 0 },
 545         { "lockless_truncate",  &osc_lockless_truncate_fops, 0 },
 546         { "import",             &osc_import_fops, 0 },
 547         { "state",              &osc_state_fops, 0, 0 },
 548         { "pinger_recov",       &osc_pinger_recov_fops, 0 },
 549         { 0 }
 550 };
 551
 552 LPROC_SEQ_FOPS_RO_TYPE(osc, numrefs);
 553 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 554         { "num_refs",   &osc_numrefs_fops,     0, 0 },
 555         { 0 }
 556 };
 557
 558 #define pct(a,b) (b ? a * 100 / b : 0)
 559
 560 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 561 {
 562         struct timeval now;
 563         struct obd_device *dev = seq->private;
 564         struct client_obd *cli = &dev->u.cli;
 565         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 566         int i;
 567
 568         do_gettimeofday(&now);
 569
 570         client_obd_list_lock(&cli->cl_loi_list_lock);
 571
 572         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 573                    now.tv_sec, (unsigned long)now.tv_usec);
 574         seq_printf(seq, "read RPCs in flight:  %d\n",
 575                    cli->cl_r_in_flight);
 576         seq_printf(seq, "write RPCs in flight: %d\n",
 577                    cli->cl_w_in_flight);
 578         seq_printf(seq, "pending write pages:  %d\n",
 579                    atomic_read(&cli->cl_pending_w_pages));
 580         seq_printf(seq, "pending read pages:   %d\n",
 581                    atomic_read(&cli->cl_pending_r_pages));
 582
 583         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 584         seq_printf(seq, "pages per rpc   rpcs   %% cum %% |");
 585         seq_printf(seq, "       rpcs   %% cum %%\n");
 586
 587         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 588         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 589
 590         read_cum = 0;
 591         write_cum = 0;
 592         for (i = 0; i < OBD_HIST_MAX; i++) {
 593                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 594                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 595                 read_cum += r;
 596                 write_cum += w;
 597                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 598                                  1 << i, r, pct(r, read_tot),
 599                                  pct(read_cum, read_tot), w,
 600                                  pct(w, write_tot),
 601                                  pct(write_cum, write_tot));
 602                 if (read_cum == read_tot && write_cum == write_tot)
 603                         break;
 604         }
 605
 606         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 607         seq_printf(seq, "rpcs in flight rpcs   %% cum %% |");
 608         seq_printf(seq, "       rpcs   %% cum %%\n");
 609
 610         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 611         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 612
 613         read_cum = 0;
 614         write_cum = 0;
 615         for (i = 0; i < OBD_HIST_MAX; i++) {
 616                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 617                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 618                 read_cum += r;
 619                 write_cum += w;
 620                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 621                                  i, r, pct(r, read_tot),
 622                                  pct(read_cum, read_tot), w,
 623                                  pct(w, write_tot),
 624                                  pct(write_cum, write_tot));
 625                 if (read_cum == read_tot && write_cum == write_tot)
 626                         break;
 627         }
 628
 629         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 630         seq_printf(seq, "offset         rpcs   %% cum %% |");
 631         seq_printf(seq, "       rpcs   %% cum %%\n");
 632
 633         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 634         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 635
 636         read_cum = 0;
 637         write_cum = 0;
 638         for (i = 0; i < OBD_HIST_MAX; i++) {
 639                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 640                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 641                 read_cum += r;
 642                 write_cum += w;
 643                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 644                            (i == 0) ? 0 : 1 << (i - 1),
 645                            r, pct(r, read_tot), pct(read_cum, read_tot),
 646                            w, pct(w, write_tot), pct(write_cum, write_tot));
 647                 if (read_cum == read_tot && write_cum == write_tot)
 648                         break;
 649         }
 650
 651         client_obd_list_unlock(&cli->cl_loi_list_lock);
 652
 653         return 0;
 654 }
 655 #undef pct
 656
 657 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 658                                        size_t len, loff_t *off)
 659 {
 660         struct seq_file *seq = file->private_data;
 661         struct obd_device *dev = seq->private;
 662         struct client_obd *cli = &dev->u.cli;
 663
 664         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 665         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 666         lprocfs_oh_clear(&cli->cl_read_page_hist);
 667         lprocfs_oh_clear(&cli->cl_write_page_hist);
 668         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 669         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 670
 671         return len;
 672 }
 673
 674 LPROC_SEQ_FOPS(osc_rpc_stats);
 675
 676 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 677 {
 678         struct timeval now;
 679         struct obd_device *dev = seq->private;
 680         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 681
 682         do_gettimeofday(&now);
 683
 684         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 685                    now.tv_sec, (unsigned long)now.tv_usec);
 686         seq_printf(seq, "lockless_write_bytes\t\t"LPU64"\n",
 687                    stats->os_lockless_writes);
 688         seq_printf(seq, "lockless_read_bytes\t\t"LPU64"\n",
 689                    stats->os_lockless_reads);
 690         seq_printf(seq, "lockless_truncate\t\t"LPU64"\n",
 691                    stats->os_lockless_truncates);
 692         return 0;
 693 }
 694
 695 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 696                                    size_t len, loff_t *off)
 697 {
 698         struct seq_file *seq = file->private_data;
 699         struct obd_device *dev = seq->private;
 700         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 701
 702         memset(stats, 0, sizeof(*stats));
 703         return len;
 704 }
 705
 706 LPROC_SEQ_FOPS(osc_stats);
 707
 708 int lproc_osc_attach_seqstat(struct obd_device *dev)
 709 {
 710         int rc;
 711
 712         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 713                                 &osc_stats_fops, dev);
 714         if (rc == 0)
 715                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 716                                             &osc_rpc_stats_fops, dev);
 717
 718         return rc;
 719 }
 720
 721 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 722 {
 723         lvars->module_vars = lprocfs_osc_module_vars;
 724         lvars->obd_vars    = lprocfs_osc_obd_vars;
 725 }