kernel/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 <linux/statfs.h>
  39 #include "../include/obd_cksum.h"
  40 #include "../include/obd_class.h"
  41 #include "../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
  49         LPROCFS_CLIMP_CHECK(dev);
  50         seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  51         LPROCFS_CLIMP_EXIT(dev);
  52
  53         return 0;
  54 }
  55
  56 static ssize_t osc_active_seq_write(struct file *file,
  57                                 const char __user *buffer,
  58                                 size_t count, loff_t *off)
  59 {
  60         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  61         int val, rc;
  62
  63         rc = lprocfs_write_helper(buffer, count, &val);
  64         if (rc)
  65                 return rc;
  66         if (val < 0 || val > 1)
  67                 return -ERANGE;
  68
  69         /* opposite senses */
  70         if (dev->u.cli.cl_import->imp_deactive == val)
  71                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  72         else
  73                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  74
  75         return count;
  76 }
  77 LPROC_SEQ_FOPS(osc_active);
  78
  79 static int osc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  80 {
  81         struct obd_device *dev = m->private;
  82         struct client_obd *cli = &dev->u.cli;
  83
  84         client_obd_list_lock(&cli->cl_loi_list_lock);
  85         seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
  86         client_obd_list_unlock(&cli->cl_loi_list_lock);
  87
  88         return 0;
  89 }
  90
  91 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
  92                         const char __user *buffer,
  93                         size_t count, loff_t *off)
  94 {
  95         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  96         struct client_obd *cli = &dev->u.cli;
  97         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
  98         int val, rc;
  99
 100         rc = lprocfs_write_helper(buffer, count, &val);
 101         if (rc)
 102                 return rc;
 103
 104         if (val < 1 || val > OSC_MAX_RIF_MAX)
 105                 return -ERANGE;
 106
 107         LPROCFS_CLIMP_CHECK(dev);
 108         if (pool && val > cli->cl_max_rpcs_in_flight)
 109                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 110
 111         client_obd_list_lock(&cli->cl_loi_list_lock);
 112         cli->cl_max_rpcs_in_flight = val;
 113         client_obd_list_unlock(&cli->cl_loi_list_lock);
 114
 115         LPROCFS_CLIMP_EXIT(dev);
 116         return count;
 117 }
 118 LPROC_SEQ_FOPS(osc_max_rpcs_in_flight);
 119
 120 static int osc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 121 {
 122         struct obd_device *dev = m->private;
 123         struct client_obd *cli = &dev->u.cli;
 124         long val;
 125         int mult;
 126
 127         client_obd_list_lock(&cli->cl_loi_list_lock);
 128         val = cli->cl_dirty_max;
 129         client_obd_list_unlock(&cli->cl_loi_list_lock);
 130
 131         mult = 1 << 20;
 132         return lprocfs_seq_read_frac_helper(m, val, mult);
 133 }
 134
 135 static ssize_t osc_max_dirty_mb_seq_write(struct file *file,
 136                                 const char __user *buffer,
 137                                 size_t count, loff_t *off)
 138 {
 139         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 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 = (u32)(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 LPROC_SEQ_FOPS(osc_max_dirty_mb);
 161
 162 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 163 {
 164         struct obd_device *dev = m->private;
 165         struct client_obd *cli = &dev->u.cli;
 166         int shift = 20 - PAGE_CACHE_SHIFT;
 167
 168         seq_printf(m,
 169                    "used_mb: %d\n"
 170                    "busy_cnt: %d\n",
 171                    (atomic_read(&cli->cl_lru_in_list) +
 172                     atomic_read(&cli->cl_lru_busy)) >> shift,
 173                    atomic_read(&cli->cl_lru_busy));
 174
 175         return 0;
 176 }
 177
 178 /* shrink the number of caching pages to a specific number */
 179 static ssize_t osc_cached_mb_seq_write(struct file *file,
 180                                        const char __user *buffer,
 181                                        size_t count, loff_t *off)
 182 {
 183         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 184         struct client_obd *cli = &dev->u.cli;
 185         int pages_number, mult, rc;
 186         char kernbuf[128];
 187
 188         if (count >= sizeof(kernbuf))
 189                 return -EINVAL;
 190
 191         if (copy_from_user(kernbuf, buffer, count))
 192                 return -EFAULT;
 193         kernbuf[count] = 0;
 194
 195         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 196         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 197                   kernbuf;
 198         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 199         if (rc)
 200                 return rc;
 201
 202         if (pages_number < 0)
 203                 return -ERANGE;
 204
 205         rc = atomic_read(&cli->cl_lru_in_list) - pages_number;
 206         if (rc > 0)
 207                 (void)osc_lru_shrink(cli, rc);
 208
 209         return count;
 210 }
 211 LPROC_SEQ_FOPS(osc_cached_mb);
 212
 213 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 214 {
 215         struct obd_device *dev = m->private;
 216         struct client_obd *cli = &dev->u.cli;
 217
 218         client_obd_list_lock(&cli->cl_loi_list_lock);
 219         seq_printf(m, "%lu\n", cli->cl_dirty);
 220         client_obd_list_unlock(&cli->cl_loi_list_lock);
 221
 222         return 0;
 223 }
 224 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 225
 226 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 227 {
 228         struct obd_device *dev = m->private;
 229         struct client_obd *cli = &dev->u.cli;
 230
 231         client_obd_list_lock(&cli->cl_loi_list_lock);
 232         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 233         client_obd_list_unlock(&cli->cl_loi_list_lock);
 234
 235         return 0;
 236 }
 237
 238 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 239                                 const char __user *buffer,
 240                                 size_t count, loff_t *off)
 241 {
 242         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 243         struct client_obd *cli = &obd->u.cli;
 244         int             rc;
 245         __u64         val;
 246
 247         if (obd == NULL)
 248                 return 0;
 249
 250         rc = lprocfs_write_u64_helper(buffer, count, &val);
 251         if (rc)
 252                 return rc;
 253
 254         /* this is only for shrinking grant */
 255         client_obd_list_lock(&cli->cl_loi_list_lock);
 256         if (val >= cli->cl_avail_grant) {
 257                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 258                 return 0;
 259         }
 260         client_obd_list_unlock(&cli->cl_loi_list_lock);
 261
 262         LPROCFS_CLIMP_CHECK(obd);
 263         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 264                 rc = osc_shrink_grant_to_target(cli, val);
 265         LPROCFS_CLIMP_EXIT(obd);
 266         if (rc)
 267                 return rc;
 268         return count;
 269 }
 270 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 271
 272 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 273 {
 274         struct obd_device *dev = m->private;
 275         struct client_obd *cli = &dev->u.cli;
 276
 277         client_obd_list_lock(&cli->cl_loi_list_lock);
 278         seq_printf(m, "%lu\n", cli->cl_lost_grant);
 279         client_obd_list_unlock(&cli->cl_loi_list_lock);
 280
 281         return 0;
 282 }
 283 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 284
 285 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 286 {
 287         struct obd_device *obd = m->private;
 288
 289         if (obd == NULL)
 290                 return 0;
 291         seq_printf(m, "%d\n", obd->u.cli.cl_grant_shrink_interval);
 292         return 0;
 293 }
 294
 295 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 296                                 const char __user *buffer,
 297                                 size_t count, loff_t *off)
 298 {
 299         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 300         int val, rc;
 301
 302         if (obd == NULL)
 303                 return 0;
 304
 305         rc = lprocfs_write_helper(buffer, count, &val);
 306         if (rc)
 307                 return rc;
 308
 309         if (val <= 0)
 310                 return -ERANGE;
 311
 312         obd->u.cli.cl_grant_shrink_interval = val;
 313
 314         return count;
 315 }
 316 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 317
 318 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 319 {
 320         struct obd_device *obd = m->private;
 321
 322         if (obd == NULL)
 323                 return 0;
 324
 325         seq_printf(m, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 326         return 0;
 327 }
 328
 329 static ssize_t osc_checksum_seq_write(struct file *file,
 330                                 const char __user *buffer,
 331                                 size_t count, loff_t *off)
 332 {
 333         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 334         int val, rc;
 335
 336         if (obd == NULL)
 337                 return 0;
 338
 339         rc = lprocfs_write_helper(buffer, count, &val);
 340         if (rc)
 341                 return rc;
 342
 343         obd->u.cli.cl_checksum = (val ? 1 : 0);
 344
 345         return count;
 346 }
 347 LPROC_SEQ_FOPS(osc_checksum);
 348
 349 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 350 {
 351         struct obd_device *obd = m->private;
 352         int i;
 353         DECLARE_CKSUM_NAME;
 354
 355         if (obd == NULL)
 356                 return 0;
 357
 358         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 359                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 360                         continue;
 361                 if (obd->u.cli.cl_cksum_type == (1 << i))
 362                         seq_printf(m, "[%s] ", cksum_name[i]);
 363                 else
 364                         seq_printf(m, "%s ", cksum_name[i]);
 365         }
 366         seq_putc(m, '\n');
 367         return 0;
 368 }
 369
 370 static ssize_t osc_checksum_type_seq_write(struct file *file,
 371                                 const char __user *buffer,
 372                                 size_t count, loff_t *off)
 373 {
 374         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 375         int i;
 376         DECLARE_CKSUM_NAME;
 377         char kernbuf[10];
 378
 379         if (obd == NULL)
 380                 return 0;
 381
 382         if (count > sizeof(kernbuf) - 1)
 383                 return -EINVAL;
 384         if (copy_from_user(kernbuf, buffer, count))
 385                 return -EFAULT;
 386         if (count > 0 && kernbuf[count - 1] == '\n')
 387                 kernbuf[count - 1] = '\0';
 388         else
 389                 kernbuf[count] = '\0';
 390
 391         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 392                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 393                         continue;
 394                 if (!strcmp(kernbuf, cksum_name[i])) {
 395                        obd->u.cli.cl_cksum_type = 1 << i;
 396                        return count;
 397                 }
 398         }
 399         return -EINVAL;
 400 }
 401 LPROC_SEQ_FOPS(osc_checksum_type);
 402
 403 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 404 {
 405         struct obd_device *obd = m->private;
 406
 407         seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 408         return 0;
 409 }
 410
 411 static ssize_t osc_resend_count_seq_write(struct file *file,
 412                                 const char __user *buffer,
 413                                 size_t count, loff_t *off)
 414 {
 415         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 416         int val, rc;
 417
 418         rc = lprocfs_write_helper(buffer, count, &val);
 419         if (rc)
 420                 return rc;
 421
 422         if (val < 0)
 423                return -EINVAL;
 424
 425         atomic_set(&obd->u.cli.cl_resends, val);
 426
 427         return count;
 428 }
 429 LPROC_SEQ_FOPS(osc_resend_count);
 430
 431 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 432 {
 433         struct obd_device *obd = m->private;
 434         struct osc_device *od  = obd2osc_dev(obd);
 435
 436         seq_printf(m, "%u\n", od->od_contention_time);
 437         return 0;
 438 }
 439
 440 static ssize_t osc_contention_seconds_seq_write(struct file *file,
 441                                         const char __user *buffer,
 442                                         size_t count, loff_t *off)
 443 {
 444         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 445         struct osc_device *od  = obd2osc_dev(obd);
 446
 447         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 448                 count;
 449 }
 450 LPROC_SEQ_FOPS(osc_contention_seconds);
 451
 452 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 453 {
 454         struct obd_device *obd = m->private;
 455         struct osc_device *od  = obd2osc_dev(obd);
 456
 457         seq_printf(m, "%u\n", od->od_lockless_truncate);
 458         return 0;
 459 }
 460
 461 static ssize_t osc_lockless_truncate_seq_write(struct file *file,
 462                                         const char __user *buffer,
 463                                         size_t count, loff_t *off)
 464 {
 465         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 466         struct osc_device *od  = obd2osc_dev(obd);
 467
 468         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 469                 count;
 470 }
 471 LPROC_SEQ_FOPS(osc_lockless_truncate);
 472
 473 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 474 {
 475         struct obd_device *obd = m->private;
 476
 477         seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_destroy_in_flight));
 478         return 0;
 479 }
 480 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 481
 482 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 483 {
 484         return lprocfs_obd_rd_max_pages_per_rpc(m, m->private);
 485 }
 486
 487 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 488                                 const char __user *buffer,
 489                                 size_t count, loff_t *off)
 490 {
 491         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 492         struct client_obd *cli = &dev->u.cli;
 493         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
 494         int chunk_mask, rc;
 495         __u64 val;
 496
 497         rc = lprocfs_write_u64_helper(buffer, count, &val);
 498         if (rc)
 499                 return rc;
 500
 501         /* if the max_pages is specified in bytes, convert to pages */
 502         if (val >= ONE_MB_BRW_SIZE)
 503                 val >>= PAGE_CACHE_SHIFT;
 504
 505         LPROCFS_CLIMP_CHECK(dev);
 506
 507         chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
 508         /* max_pages_per_rpc must be chunk aligned */
 509         val = (val + ~chunk_mask) & chunk_mask;
 510         if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
 511                 LPROCFS_CLIMP_EXIT(dev);
 512                 return -ERANGE;
 513         }
 514         client_obd_list_lock(&cli->cl_loi_list_lock);
 515         cli->cl_max_pages_per_rpc = val;
 516         client_obd_list_unlock(&cli->cl_loi_list_lock);
 517
 518         LPROCFS_CLIMP_EXIT(dev);
 519         return count;
 520 }
 521 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 522
 523 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 524 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 525 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 526 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 527 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 528 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 529 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 530 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 531 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 532 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 533 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 534 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 535
 536 LPROC_SEQ_FOPS_WR_ONLY(osc, ping);
 537
 538 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 539 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 540
 541 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 542         { "uuid",            &osc_uuid_fops,    NULL, 0 },
 543         { "ping",            &osc_ping_fops,    NULL, 0222 },
 544         { "connect_flags",   &osc_connect_flags_fops, NULL, 0 },
 545         { "blocksize",       &osc_blksize_fops,     NULL, 0 },
 546         { "kbytestotal",     &osc_kbytestotal_fops, NULL, 0 },
 547         { "kbytesfree",      &osc_kbytesfree_fops,  NULL, 0 },
 548         { "kbytesavail",     &osc_kbytesavail_fops, NULL, 0 },
 549         { "filestotal",      &osc_filestotal_fops,  NULL, 0 },
 550         { "filesfree",       &osc_filesfree_fops,   NULL, 0 },
 551         /*{ "filegroups",      lprocfs_rd_filegroups,  NULL, 0 },*/
 552         { "ost_server_uuid", &osc_server_uuid_fops, NULL, 0 },
 553         { "ost_conn_uuid",   &osc_conn_uuid_fops, NULL, 0 },
 554         { "active",          &osc_active_fops, NULL },
 555         { "max_pages_per_rpc", &osc_obd_max_pages_per_rpc_fops, NULL },
 556         { "max_rpcs_in_flight", &osc_max_rpcs_in_flight_fops, NULL },
 557         { "destroys_in_flight", &osc_destroys_in_flight_fops, NULL, 0 },
 558         { "max_dirty_mb",    &osc_max_dirty_mb_fops, NULL },
 559         { "osc_cached_mb",   &osc_cached_mb_fops, NULL },
 560         { "cur_dirty_bytes", &osc_cur_dirty_bytes_fops, NULL, 0 },
 561         { "cur_grant_bytes", &osc_cur_grant_bytes_fops, NULL },
 562         { "cur_lost_grant_bytes", &osc_cur_lost_grant_bytes_fops, NULL, 0},
 563         { "grant_shrink_interval", &osc_grant_shrink_interval_fops, NULL },
 564         { "checksums",       &osc_checksum_fops, NULL },
 565         { "checksum_type",   &osc_checksum_type_fops, NULL },
 566         { "resend_count",    &osc_resend_count_fops, NULL},
 567         { "timeouts",        &osc_timeouts_fops, NULL, 0 },
 568         { "contention_seconds", &osc_contention_seconds_fops, NULL },
 569         { "lockless_truncate",  &osc_lockless_truncate_fops, NULL },
 570         { "import",             &osc_import_fops, NULL },
 571         { "state",              &osc_state_fops, NULL, 0 },
 572         { "pinger_recov",       &osc_pinger_recov_fops, NULL },
 573         { NULL }
 574 };
 575
 576 LPROC_SEQ_FOPS_RO_TYPE(osc, numrefs);
 577 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 578         { "num_refs",   &osc_numrefs_fops,     NULL, 0 },
 579         { NULL }
 580 };
 581
 582 #define pct(a, b) (b ? a * 100 / b : 0)
 583
 584 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 585 {
 586         struct timeval now;
 587         struct obd_device *dev = seq->private;
 588         struct client_obd *cli = &dev->u.cli;
 589         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 590         int i;
 591
 592         do_gettimeofday(&now);
 593
 594         client_obd_list_lock(&cli->cl_loi_list_lock);
 595
 596         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 597                    now.tv_sec, (unsigned long)now.tv_usec);
 598         seq_printf(seq, "read RPCs in flight:  %d\n",
 599                    cli->cl_r_in_flight);
 600         seq_printf(seq, "write RPCs in flight: %d\n",
 601                    cli->cl_w_in_flight);
 602         seq_printf(seq, "pending write pages:  %d\n",
 603                    atomic_read(&cli->cl_pending_w_pages));
 604         seq_printf(seq, "pending read pages:   %d\n",
 605                    atomic_read(&cli->cl_pending_r_pages));
 606
 607         seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
 608         seq_puts(seq, "pages per rpc     rpcs   % cum % |");
 609         seq_puts(seq, "       rpcs   % cum %\n");
 610
 611         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 612         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 613
 614         read_cum = 0;
 615         write_cum = 0;
 616         for (i = 0; i < OBD_HIST_MAX; i++) {
 617                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 618                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 619                 read_cum += r;
 620                 write_cum += w;
 621                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 622                                  1 << i, r, pct(r, read_tot),
 623                                  pct(read_cum, read_tot), w,
 624                                  pct(w, write_tot),
 625                                  pct(write_cum, write_tot));
 626                 if (read_cum == read_tot && write_cum == write_tot)
 627                         break;
 628         }
 629
 630         seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
 631         seq_puts(seq, "rpcs in flight   rpcs   % cum % |");
 632         seq_puts(seq, "       rpcs   % cum %\n");
 633
 634         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 635         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 636
 637         read_cum = 0;
 638         write_cum = 0;
 639         for (i = 0; i < OBD_HIST_MAX; i++) {
 640                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 641                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 642                 read_cum += r;
 643                 write_cum += w;
 644                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 645                                  i, r, pct(r, read_tot),
 646                                  pct(read_cum, read_tot), w,
 647                                  pct(w, write_tot),
 648                                  pct(write_cum, write_tot));
 649                 if (read_cum == read_tot && write_cum == write_tot)
 650                         break;
 651         }
 652
 653         seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
 654         seq_puts(seq, "offset           rpcs   % cum % |");
 655         seq_puts(seq, "       rpcs   % cum %\n");
 656
 657         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 658         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 659
 660         read_cum = 0;
 661         write_cum = 0;
 662         for (i = 0; i < OBD_HIST_MAX; i++) {
 663                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 664                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 665                 read_cum += r;
 666                 write_cum += w;
 667                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 668                            (i == 0) ? 0 : 1 << (i - 1),
 669                            r, pct(r, read_tot), pct(read_cum, read_tot),
 670                            w, pct(w, write_tot), pct(write_cum, write_tot));
 671                 if (read_cum == read_tot && write_cum == write_tot)
 672                         break;
 673         }
 674
 675         client_obd_list_unlock(&cli->cl_loi_list_lock);
 676
 677         return 0;
 678 }
 679 #undef pct
 680
 681 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 682                                 const char __user *buf,
 683                                 size_t len, loff_t *off)
 684 {
 685         struct seq_file *seq = file->private_data;
 686         struct obd_device *dev = seq->private;
 687         struct client_obd *cli = &dev->u.cli;
 688
 689         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 690         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 691         lprocfs_oh_clear(&cli->cl_read_page_hist);
 692         lprocfs_oh_clear(&cli->cl_write_page_hist);
 693         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 694         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 695
 696         return len;
 697 }
 698
 699 LPROC_SEQ_FOPS(osc_rpc_stats);
 700
 701 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 702 {
 703         struct timeval now;
 704         struct obd_device *dev = seq->private;
 705         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 706
 707         do_gettimeofday(&now);
 708
 709         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 710                    now.tv_sec, (unsigned long)now.tv_usec);
 711         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 712                    stats->os_lockless_writes);
 713         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 714                    stats->os_lockless_reads);
 715         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 716                    stats->os_lockless_truncates);
 717         return 0;
 718 }
 719
 720 static ssize_t osc_stats_seq_write(struct file *file,
 721                                 const char __user *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 osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 727
 728         memset(stats, 0, sizeof(*stats));
 729         return len;
 730 }
 731
 732 LPROC_SEQ_FOPS(osc_stats);
 733
 734 int lproc_osc_attach_seqstat(struct obd_device *dev)
 735 {
 736         int rc;
 737
 738         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 739                                 &osc_stats_fops, dev);
 740         if (rc == 0)
 741                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 742                                             &osc_rpc_stats_fops, dev);
 743
 744         return rc;
 745 }
 746
 747 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 748 {
 749         lvars->module_vars = lprocfs_osc_module_vars;
 750         lvars->obd_vars    = lprocfs_osc_obd_vars;
 751 }