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 "../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         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 = (u32)(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,
 178                                        const char __user *buffer,
 179                                        size_t count, loff_t *off)
 180 {
 181         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 182         struct client_obd *cli = &dev->u.cli;
 183         int pages_number, mult, rc;
 184         char kernbuf[128];
 185
 186         if (count >= sizeof(kernbuf))
 187                 return -EINVAL;
 188
 189         if (copy_from_user(kernbuf, buffer, count))
 190                 return -EFAULT;
 191         kernbuf[count] = 0;
 192
 193         mult = 1 << (20 - PAGE_CACHE_SHIFT);
 194         buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
 195                   kernbuf;
 196         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 197         if (rc)
 198                 return rc;
 199
 200         if (pages_number < 0)
 201                 return -ERANGE;
 202
 203         rc = atomic_read(&cli->cl_lru_in_list) - pages_number;
 204         if (rc > 0)
 205                 (void)osc_lru_shrink(cli, rc);
 206
 207         return count;
 208 }
 209 LPROC_SEQ_FOPS(osc_cached_mb);
 210
 211 static int osc_cur_dirty_bytes_seq_show(struct seq_file *m, void *v)
 212 {
 213         struct obd_device *dev = m->private;
 214         struct client_obd *cli = &dev->u.cli;
 215         int rc;
 216
 217         client_obd_list_lock(&cli->cl_loi_list_lock);
 218         rc = seq_printf(m, "%lu\n", cli->cl_dirty);
 219         client_obd_list_unlock(&cli->cl_loi_list_lock);
 220         return rc;
 221 }
 222 LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
 223
 224 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 225 {
 226         struct obd_device *dev = m->private;
 227         struct client_obd *cli = &dev->u.cli;
 228         int rc;
 229
 230         client_obd_list_lock(&cli->cl_loi_list_lock);
 231         rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
 232         client_obd_list_unlock(&cli->cl_loi_list_lock);
 233         return rc;
 234 }
 235
 236 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file, const char *buffer,
 237                                   size_t count, loff_t *off)
 238 {
 239         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 240         struct client_obd *cli = &obd->u.cli;
 241         int             rc;
 242         __u64         val;
 243
 244         if (obd == NULL)
 245                 return 0;
 246
 247         rc = lprocfs_write_u64_helper(buffer, count, &val);
 248         if (rc)
 249                 return rc;
 250
 251         /* this is only for shrinking grant */
 252         client_obd_list_lock(&cli->cl_loi_list_lock);
 253         if (val >= cli->cl_avail_grant) {
 254                 client_obd_list_unlock(&cli->cl_loi_list_lock);
 255                 return 0;
 256         }
 257         client_obd_list_unlock(&cli->cl_loi_list_lock);
 258
 259         LPROCFS_CLIMP_CHECK(obd);
 260         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 261                 rc = osc_shrink_grant_to_target(cli, val);
 262         LPROCFS_CLIMP_EXIT(obd);
 263         if (rc)
 264                 return rc;
 265         return count;
 266 }
 267 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 268
 269 static int osc_cur_lost_grant_bytes_seq_show(struct seq_file *m, void *v)
 270 {
 271         struct obd_device *dev = m->private;
 272         struct client_obd *cli = &dev->u.cli;
 273         int rc;
 274
 275         client_obd_list_lock(&cli->cl_loi_list_lock);
 276         rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
 277         client_obd_list_unlock(&cli->cl_loi_list_lock);
 278         return rc;
 279 }
 280 LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
 281
 282 static int osc_grant_shrink_interval_seq_show(struct seq_file *m, void *v)
 283 {
 284         struct obd_device *obd = m->private;
 285
 286         if (obd == NULL)
 287                 return 0;
 288         return seq_printf(m, "%d\n",
 289                         obd->u.cli.cl_grant_shrink_interval);
 290 }
 291
 292 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
 293                                 const char *buffer, size_t count, loff_t *off)
 294 {
 295         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 296         int val, rc;
 297
 298         if (obd == NULL)
 299                 return 0;
 300
 301         rc = lprocfs_write_helper(buffer, count, &val);
 302         if (rc)
 303                 return rc;
 304
 305         if (val <= 0)
 306                 return -ERANGE;
 307
 308         obd->u.cli.cl_grant_shrink_interval = val;
 309
 310         return count;
 311 }
 312 LPROC_SEQ_FOPS(osc_grant_shrink_interval);
 313
 314 static int osc_checksum_seq_show(struct seq_file *m, void *v)
 315 {
 316         struct obd_device *obd = m->private;
 317
 318         if (obd == NULL)
 319                 return 0;
 320
 321         return seq_printf(m, "%d\n",
 322                         obd->u.cli.cl_checksum ? 1 : 0);
 323 }
 324
 325 static ssize_t osc_checksum_seq_write(struct file *file, const char *buffer,
 326                            size_t count, loff_t *off)
 327 {
 328         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 329         int val, rc;
 330
 331         if (obd == NULL)
 332                 return 0;
 333
 334         rc = lprocfs_write_helper(buffer, count, &val);
 335         if (rc)
 336                 return rc;
 337
 338         obd->u.cli.cl_checksum = (val ? 1 : 0);
 339
 340         return count;
 341 }
 342 LPROC_SEQ_FOPS(osc_checksum);
 343
 344 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 345 {
 346         struct obd_device *obd = m->private;
 347         int i;
 348         DECLARE_CKSUM_NAME;
 349
 350         if (obd == NULL)
 351                 return 0;
 352
 353         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 354                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 355                         continue;
 356                 if (obd->u.cli.cl_cksum_type == (1 << i))
 357                         seq_printf(m, "[%s] ", cksum_name[i]);
 358                 else
 359                         seq_printf(m, "%s ", cksum_name[i]);
 360         }
 361         seq_printf(m, "\n");
 362         return 0;
 363 }
 364
 365 static ssize_t osc_checksum_type_seq_write(struct file *file, const char *buffer,
 366                                 size_t count, loff_t *off)
 367 {
 368         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 369         int i;
 370         DECLARE_CKSUM_NAME;
 371         char kernbuf[10];
 372
 373         if (obd == NULL)
 374                 return 0;
 375
 376         if (count > sizeof(kernbuf) - 1)
 377                 return -EINVAL;
 378         if (copy_from_user(kernbuf, buffer, count))
 379                 return -EFAULT;
 380         if (count > 0 && kernbuf[count - 1] == '\n')
 381                 kernbuf[count - 1] = '\0';
 382         else
 383                 kernbuf[count] = '\0';
 384
 385         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 386                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 387                         continue;
 388                 if (!strcmp(kernbuf, cksum_name[i])) {
 389                        obd->u.cli.cl_cksum_type = 1 << i;
 390                        return count;
 391                 }
 392         }
 393         return -EINVAL;
 394 }
 395 LPROC_SEQ_FOPS(osc_checksum_type);
 396
 397 static int osc_resend_count_seq_show(struct seq_file *m, void *v)
 398 {
 399         struct obd_device *obd = m->private;
 400
 401         return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 402 }
 403
 404 static ssize_t osc_resend_count_seq_write(struct file *file, const char *buffer,
 405                                size_t count, loff_t *off)
 406 {
 407         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 408         int val, rc;
 409
 410         rc = lprocfs_write_helper(buffer, count, &val);
 411         if (rc)
 412                 return rc;
 413
 414         if (val < 0)
 415                return -EINVAL;
 416
 417         atomic_set(&obd->u.cli.cl_resends, val);
 418
 419         return count;
 420 }
 421 LPROC_SEQ_FOPS(osc_resend_count);
 422
 423 static int osc_contention_seconds_seq_show(struct seq_file *m, void *v)
 424 {
 425         struct obd_device *obd = m->private;
 426         struct osc_device *od  = obd2osc_dev(obd);
 427
 428         return seq_printf(m, "%u\n", od->od_contention_time);
 429 }
 430
 431 static ssize_t osc_contention_seconds_seq_write(struct file *file, const char *buffer,
 432                                      size_t count, loff_t *off)
 433 {
 434         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 435         struct osc_device *od  = obd2osc_dev(obd);
 436
 437         return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
 438                 count;
 439 }
 440 LPROC_SEQ_FOPS(osc_contention_seconds);
 441
 442 static int osc_lockless_truncate_seq_show(struct seq_file *m, void *v)
 443 {
 444         struct obd_device *obd = m->private;
 445         struct osc_device *od  = obd2osc_dev(obd);
 446
 447         return seq_printf(m, "%u\n", od->od_lockless_truncate);
 448 }
 449
 450 static ssize_t osc_lockless_truncate_seq_write(struct file *file, const char *buffer,
 451                                     size_t count, loff_t *off)
 452 {
 453         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 454         struct osc_device *od  = obd2osc_dev(obd);
 455
 456         return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
 457                 count;
 458 }
 459 LPROC_SEQ_FOPS(osc_lockless_truncate);
 460
 461 static int osc_destroys_in_flight_seq_show(struct seq_file *m, void *v)
 462 {
 463         struct obd_device *obd = m->private;
 464         return seq_printf(m, "%u\n",
 465                         atomic_read(&obd->u.cli.cl_destroy_in_flight));
 466 }
 467 LPROC_SEQ_FOPS_RO(osc_destroys_in_flight);
 468
 469 static int osc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 470 {
 471         return lprocfs_obd_rd_max_pages_per_rpc(m, m->private);
 472 }
 473
 474 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
 475                                 const char *buffer, size_t count, loff_t *off)
 476 {
 477         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 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 LPROC_SEQ_FOPS(osc_obd_max_pages_per_rpc);
 508
 509 LPROC_SEQ_FOPS_RO_TYPE(osc, uuid);
 510 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 511 LPROC_SEQ_FOPS_RO_TYPE(osc, blksize);
 512 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytestotal);
 513 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesfree);
 514 LPROC_SEQ_FOPS_RO_TYPE(osc, kbytesavail);
 515 LPROC_SEQ_FOPS_RO_TYPE(osc, filestotal);
 516 LPROC_SEQ_FOPS_RO_TYPE(osc, filesfree);
 517 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 518 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
 519 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 520 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 521
 522 LPROC_SEQ_FOPS_WR_ONLY(osc, ping);
 523
 524 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 525 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 526
 527 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 528         { "uuid",            &osc_uuid_fops,    NULL, 0 },
 529         { "ping",            &osc_ping_fops,    NULL, 0222 },
 530         { "connect_flags",   &osc_connect_flags_fops, NULL, 0 },
 531         { "blocksize",       &osc_blksize_fops,     NULL, 0 },
 532         { "kbytestotal",     &osc_kbytestotal_fops, NULL, 0 },
 533         { "kbytesfree",      &osc_kbytesfree_fops,  NULL, 0 },
 534         { "kbytesavail",     &osc_kbytesavail_fops, NULL, 0 },
 535         { "filestotal",      &osc_filestotal_fops,  NULL, 0 },
 536         { "filesfree",       &osc_filesfree_fops,   NULL, 0 },
 537         /*{ "filegroups",      lprocfs_rd_filegroups,  NULL, 0 },*/
 538         { "ost_server_uuid", &osc_server_uuid_fops, NULL, 0 },
 539         { "ost_conn_uuid",   &osc_conn_uuid_fops, NULL, 0 },
 540         { "active",          &osc_active_fops, NULL },
 541         { "max_pages_per_rpc", &osc_obd_max_pages_per_rpc_fops, NULL },
 542         { "max_rpcs_in_flight", &osc_max_rpcs_in_flight_fops, NULL },
 543         { "destroys_in_flight", &osc_destroys_in_flight_fops, NULL, 0 },
 544         { "max_dirty_mb",    &osc_max_dirty_mb_fops, NULL },
 545         { "osc_cached_mb",   &osc_cached_mb_fops, NULL },
 546         { "cur_dirty_bytes", &osc_cur_dirty_bytes_fops, NULL, 0 },
 547         { "cur_grant_bytes", &osc_cur_grant_bytes_fops, NULL },
 548         { "cur_lost_grant_bytes", &osc_cur_lost_grant_bytes_fops, NULL, 0},
 549         { "grant_shrink_interval", &osc_grant_shrink_interval_fops, NULL },
 550         { "checksums",       &osc_checksum_fops, NULL },
 551         { "checksum_type",   &osc_checksum_type_fops, NULL },
 552         { "resend_count",    &osc_resend_count_fops, NULL},
 553         { "timeouts",        &osc_timeouts_fops, NULL, 0 },
 554         { "contention_seconds", &osc_contention_seconds_fops, NULL },
 555         { "lockless_truncate",  &osc_lockless_truncate_fops, NULL },
 556         { "import",             &osc_import_fops, NULL },
 557         { "state",              &osc_state_fops, NULL, 0 },
 558         { "pinger_recov",       &osc_pinger_recov_fops, NULL },
 559         { NULL }
 560 };
 561
 562 LPROC_SEQ_FOPS_RO_TYPE(osc, numrefs);
 563 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 564         { "num_refs",   &osc_numrefs_fops,     NULL, 0 },
 565         { NULL }
 566 };
 567
 568 #define pct(a,b) (b ? a * 100 / b : 0)
 569
 570 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 571 {
 572         struct timeval now;
 573         struct obd_device *dev = seq->private;
 574         struct client_obd *cli = &dev->u.cli;
 575         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 576         int i;
 577
 578         do_gettimeofday(&now);
 579
 580         client_obd_list_lock(&cli->cl_loi_list_lock);
 581
 582         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 583                    now.tv_sec, (unsigned long)now.tv_usec);
 584         seq_printf(seq, "read RPCs in flight:  %d\n",
 585                    cli->cl_r_in_flight);
 586         seq_printf(seq, "write RPCs in flight: %d\n",
 587                    cli->cl_w_in_flight);
 588         seq_printf(seq, "pending write pages:  %d\n",
 589                    atomic_read(&cli->cl_pending_w_pages));
 590         seq_printf(seq, "pending read pages:   %d\n",
 591                    atomic_read(&cli->cl_pending_r_pages));
 592
 593         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 594         seq_printf(seq, "pages per rpc   rpcs   %% cum %% |");
 595         seq_printf(seq, "       rpcs   %% cum %%\n");
 596
 597         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 598         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 599
 600         read_cum = 0;
 601         write_cum = 0;
 602         for (i = 0; i < OBD_HIST_MAX; i++) {
 603                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 604                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 605                 read_cum += r;
 606                 write_cum += w;
 607                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 608                                  1 << i, r, pct(r, read_tot),
 609                                  pct(read_cum, read_tot), w,
 610                                  pct(w, write_tot),
 611                                  pct(write_cum, write_tot));
 612                 if (read_cum == read_tot && write_cum == write_tot)
 613                         break;
 614         }
 615
 616         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 617         seq_printf(seq, "rpcs in flight rpcs   %% cum %% |");
 618         seq_printf(seq, "       rpcs   %% cum %%\n");
 619
 620         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 621         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 622
 623         read_cum = 0;
 624         write_cum = 0;
 625         for (i = 0; i < OBD_HIST_MAX; i++) {
 626                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 627                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 628                 read_cum += r;
 629                 write_cum += w;
 630                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 631                                  i, r, pct(r, read_tot),
 632                                  pct(read_cum, read_tot), w,
 633                                  pct(w, write_tot),
 634                                  pct(write_cum, write_tot));
 635                 if (read_cum == read_tot && write_cum == write_tot)
 636                         break;
 637         }
 638
 639         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 640         seq_printf(seq, "offset         rpcs   %% cum %% |");
 641         seq_printf(seq, "       rpcs   %% cum %%\n");
 642
 643         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 644         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 645
 646         read_cum = 0;
 647         write_cum = 0;
 648         for (i = 0; i < OBD_HIST_MAX; i++) {
 649                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 650                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 651                 read_cum += r;
 652                 write_cum += w;
 653                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 654                            (i == 0) ? 0 : 1 << (i - 1),
 655                            r, pct(r, read_tot), pct(read_cum, read_tot),
 656                            w, pct(w, write_tot), pct(write_cum, write_tot));
 657                 if (read_cum == read_tot && write_cum == write_tot)
 658                         break;
 659         }
 660
 661         client_obd_list_unlock(&cli->cl_loi_list_lock);
 662
 663         return 0;
 664 }
 665 #undef pct
 666
 667 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 668                                        size_t len, loff_t *off)
 669 {
 670         struct seq_file *seq = file->private_data;
 671         struct obd_device *dev = seq->private;
 672         struct client_obd *cli = &dev->u.cli;
 673
 674         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 675         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 676         lprocfs_oh_clear(&cli->cl_read_page_hist);
 677         lprocfs_oh_clear(&cli->cl_write_page_hist);
 678         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 679         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 680
 681         return len;
 682 }
 683
 684 LPROC_SEQ_FOPS(osc_rpc_stats);
 685
 686 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 687 {
 688         struct timeval now;
 689         struct obd_device *dev = seq->private;
 690         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 691
 692         do_gettimeofday(&now);
 693
 694         seq_printf(seq, "snapshot_time:  %lu.%lu (secs.usecs)\n",
 695                    now.tv_sec, (unsigned long)now.tv_usec);
 696         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 697                    stats->os_lockless_writes);
 698         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 699                    stats->os_lockless_reads);
 700         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 701                    stats->os_lockless_truncates);
 702         return 0;
 703 }
 704
 705 static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
 706                                    size_t len, loff_t *off)
 707 {
 708         struct seq_file *seq = file->private_data;
 709         struct obd_device *dev = seq->private;
 710         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 711
 712         memset(stats, 0, sizeof(*stats));
 713         return len;
 714 }
 715
 716 LPROC_SEQ_FOPS(osc_stats);
 717
 718 int lproc_osc_attach_seqstat(struct obd_device *dev)
 719 {
 720         int rc;
 721
 722         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 723                                 &osc_stats_fops, dev);
 724         if (rc == 0)
 725                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 726                                             &osc_rpc_stats_fops, dev);
 727
 728         return rc;
 729 }
 730
 731 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 732 {
 733         lvars->module_vars = lprocfs_osc_module_vars;
 734         lvars->obd_vars    = lprocfs_osc_obd_vars;
 735 }