lustre/mdc/lproc_mdc.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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  */
  31 #define DEBUG_SUBSYSTEM S_CLASS
  32
  33 #include <linux/vfs.h>
  34 #include <obd_class.h>
  35 #include <obd_cksum.h>
  36 #include <lprocfs_status.h>
  37 #include <lustre_osc.h>
  38 #include <cl_object.h>
  39 #include "mdc_internal.h"
  40
  41 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  42                            char *buf)
  43 {
  44         struct obd_device *obd = container_of(kobj, struct obd_device,
  45                                               obd_kset.kobj);
  46         struct obd_import *imp;
  47         ssize_t len;
  48
  49         with_imp_locked(obd, imp, len)
  50                 len = sprintf(buf, "%d\n", !imp->imp_deactive);
  51         return len;
  52 }
  53
  54 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  55                             const char *buffer, size_t count)
  56 {
  57         struct obd_device *obd = container_of(kobj, struct obd_device,
  58                                               obd_kset.kobj);
  59         struct obd_import *imp, *imp0;
  60         bool val;
  61         int rc;
  62
  63         rc = kstrtobool(buffer, &val);
  64         if (rc)
  65                 return rc;
  66
  67         with_imp_locked(obd, imp0, rc)
  68                 imp = class_import_get(imp0);
  69         if (rc)
  70                 return rc;
  71         /* opposite senses */
  72         if (imp->imp_deactive == val)
  73                 rc = ptlrpc_set_import_active(imp, val);
  74         else
  75                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  76                        val);
  77         class_import_put(imp);
  78         return rc ?: count;
  79 }
  80 LUSTRE_RW_ATTR(active);
  81
  82 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  83                                        struct attribute *attr,
  84                                        char *buf)
  85 {
  86         struct obd_device *obd = container_of(kobj, struct obd_device,
  87                                               obd_kset.kobj);
  88         ssize_t len;
  89         u32 max;
  90
  91         max = obd_get_max_rpcs_in_flight(&obd->u.cli);
  92         len = sprintf(buf, "%u\n", max);
  93
  94         return len;
  95 }
  96
  97 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  98                                         struct attribute *attr,
  99                                         const char *buffer,
 100                                         size_t count)
 101 {
 102         struct obd_device *obd = container_of(kobj, struct obd_device,
 103                                               obd_kset.kobj);
 104         unsigned int val;
 105         int rc;
 106
 107         rc = kstrtouint(buffer, 10, &val);
 108         if (rc)
 109                 return rc;
 110
 111         rc = obd_set_max_rpcs_in_flight(&obd->u.cli, val);
 112         if (rc)
 113                 count = rc;
 114
 115         return count;
 116 }
 117 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 118
 119 static ssize_t max_mod_rpcs_in_flight_show(struct kobject *kobj,
 120                                            struct attribute *attr,
 121                                            char *buf)
 122 {
 123         struct obd_device *obd = container_of(kobj, struct obd_device,
 124                                               obd_kset.kobj);
 125         u16 max;
 126
 127         max = obd_get_max_mod_rpcs_in_flight(&obd->u.cli);
 128         return sprintf(buf, "%hu\n", max);
 129 }
 130
 131 static ssize_t max_mod_rpcs_in_flight_store(struct kobject *kobj,
 132                                             struct attribute *attr,
 133                                             const char *buffer,
 134                                             size_t count)
 135 {
 136         struct obd_device *obd = container_of(kobj, struct obd_device,
 137                                               obd_kset.kobj);
 138         u16 val;
 139         int rc;
 140
 141         rc = kstrtou16(buffer, 10, &val);
 142         if (rc)
 143                 return rc;
 144
 145         rc = obd_set_max_mod_rpcs_in_flight(&obd->u.cli, val);
 146         if (rc)
 147                 count = rc;
 148
 149         return count;
 150 }
 151 LUSTRE_RW_ATTR(max_mod_rpcs_in_flight);
 152
 153 static int mdc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
 154 {
 155         struct obd_device *obd = m->private;
 156         struct client_obd *cli = &obd->u.cli;
 157
 158         seq_printf(m, "%lu\n", PAGES_TO_MiB(cli->cl_dirty_max_pages));
 159         return 0;
 160 }
 161
 162 static ssize_t mdc_max_dirty_mb_seq_write(struct file *file,
 163                                           const char __user *buffer,
 164                                           size_t count, loff_t *off)
 165 {
 166         struct seq_file *sfl = file->private_data;
 167         struct obd_device *obd = sfl->private;
 168         struct client_obd *cli = &obd->u.cli;
 169         char kernbuf[22] = "";
 170         u64 pages_number;
 171         int rc;
 172
 173         if (count >= sizeof(kernbuf))
 174                 return -EINVAL;
 175
 176         if (copy_from_user(kernbuf, buffer, count))
 177                 return -EFAULT;
 178         kernbuf[count] = 0;
 179
 180         rc = sysfs_memparse(kernbuf, count, &pages_number, "MiB");
 181         if (rc < 0)
 182                 return rc;
 183
 184         /* MB -> pages */
 185         pages_number = round_up(pages_number, 1024 * 1024) >> PAGE_SHIFT;
 186         if (pages_number <= 0 ||
 187             pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 188             pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
 189                 return -ERANGE;
 190
 191         spin_lock(&cli->cl_loi_list_lock);
 192         cli->cl_dirty_max_pages = pages_number;
 193         osc_wake_cache_waiters(cli);
 194         spin_unlock(&cli->cl_loi_list_lock);
 195
 196         return count;
 197 }
 198 LPROC_SEQ_FOPS(mdc_max_dirty_mb);
 199
 200 DECLARE_CKSUM_NAME;
 201
 202 static int mdc_checksum_type_seq_show(struct seq_file *m, void *v)
 203 {
 204         struct obd_device *obd = m->private;
 205         int i;
 206
 207         if (obd == NULL)
 208                 return 0;
 209
 210         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 211                 if ((BIT(i) & obd->u.cli.cl_supp_cksum_types) == 0)
 212                         continue;
 213                 if (obd->u.cli.cl_cksum_type == BIT(i))
 214                         seq_printf(m, "[%s] ", cksum_name[i]);
 215                 else
 216                         seq_printf(m, "%s ", cksum_name[i]);
 217         }
 218         seq_puts(m, "\n");
 219
 220         return 0;
 221 }
 222
 223 static ssize_t mdc_checksum_type_seq_write(struct file *file,
 224                                            const char __user *buffer,
 225                                            size_t count, loff_t *off)
 226 {
 227         struct seq_file *m = file->private_data;
 228         struct obd_device *obd = m->private;
 229         char kernbuf[10];
 230         int rc = -EINVAL;
 231         int i;
 232
 233         if (obd == NULL)
 234                 return 0;
 235
 236         if (count > sizeof(kernbuf) - 1)
 237                 return -EINVAL;
 238         if (copy_from_user(kernbuf, buffer, count))
 239                 return -EFAULT;
 240
 241         if (count > 0 && kernbuf[count - 1] == '\n')
 242                 kernbuf[count - 1] = '\0';
 243         else
 244                 kernbuf[count] = '\0';
 245
 246         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 247                 if (strcasecmp(kernbuf, cksum_name[i]) == 0) {
 248                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 249                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 250                                 obd->u.cli.cl_cksum_type = BIT(i);
 251                                 rc = count;
 252                         } else {
 253                                 rc = -ENOTSUPP;
 254                         }
 255                         break;
 256                 }
 257         }
 258
 259         return rc;
 260 }
 261 LPROC_SEQ_FOPS(mdc_checksum_type);
 262
 263 static ssize_t checksums_show(struct kobject *kobj,
 264                               struct attribute *attr, char *buf)
 265 {
 266         struct obd_device *obd = container_of(kobj, struct obd_device,
 267                                               obd_kset.kobj);
 268
 269         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum);
 270 }
 271
 272 static ssize_t checksums_store(struct kobject *kobj,
 273                                struct attribute *attr,
 274                                const char *buffer,
 275                                size_t count)
 276 {
 277         struct obd_device *obd = container_of(kobj, struct obd_device,
 278                                               obd_kset.kobj);
 279         bool val;
 280         int rc;
 281
 282         rc = kstrtobool(buffer, &val);
 283         if (rc)
 284                 return rc;
 285
 286         obd->u.cli.cl_checksum = val;
 287
 288         return count;
 289 }
 290 LUSTRE_RW_ATTR(checksums);
 291
 292 static ssize_t checksum_dump_show(struct kobject *kobj,
 293                                   struct attribute *attr, char *buf)
 294 {
 295         struct obd_device *obd = container_of(kobj, struct obd_device,
 296                                               obd_kset.kobj);
 297
 298         return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum_dump);
 299 }
 300
 301 static ssize_t checksum_dump_store(struct kobject *kobj,
 302                                    struct attribute *attr,
 303                                    const char *buffer,
 304                                    size_t count)
 305 {
 306         struct obd_device *obd = container_of(kobj, struct obd_device,
 307                                               obd_kset.kobj);
 308         bool val;
 309         int rc;
 310
 311         rc = kstrtobool(buffer, &val);
 312         if (rc)
 313                 return rc;
 314
 315         obd->u.cli.cl_checksum_dump = val;
 316
 317         return count;
 318 }
 319 LUSTRE_RW_ATTR(checksum_dump);
 320
 321 LUSTRE_ATTR(mds_conn_uuid, 0444, conn_uuid_show, NULL);
 322 LUSTRE_RO_ATTR(conn_uuid);
 323
 324 LUSTRE_RW_ATTR(ping);
 325
 326 static int mdc_cached_mb_seq_show(struct seq_file *m, void *v)
 327 {
 328         struct obd_device *obd = m->private;
 329         struct client_obd *cli = &obd->u.cli;
 330         int shift = 20 - PAGE_SHIFT;
 331
 332         seq_printf(m, "used_mb: %ld\n"
 333                    "busy_cnt: %ld\n"
 334                    "reclaim: %llu\n",
 335                    (atomic_long_read(&cli->cl_lru_in_list) +
 336                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 337                     atomic_long_read(&cli->cl_lru_busy),
 338                    cli->cl_lru_reclaim);
 339
 340         return 0;
 341 }
 342
 343 /* shrink the number of caching pages to a specific number */
 344 static ssize_t
 345 mdc_cached_mb_seq_write(struct file *file, const char __user *buffer,
 346                         size_t count, loff_t *off)
 347 {
 348         struct seq_file *sfl = file->private_data;
 349         struct obd_device *obd = sfl->private;
 350         struct client_obd *cli = &obd->u.cli;
 351         u64 pages_number;
 352         const char *tmp;
 353         long rc;
 354         char kernbuf[128];
 355
 356         if (count >= sizeof(kernbuf))
 357                 return -EINVAL;
 358
 359         if (copy_from_user(kernbuf, buffer, count))
 360                 return -EFAULT;
 361         kernbuf[count] = 0;
 362
 363         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 364         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 365         if (rc < 0)
 366                 return rc;
 367
 368         pages_number >>= PAGE_SHIFT;
 369
 370         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 371         if (rc > 0) {
 372                 struct lu_env *env;
 373                 __u16 refcheck;
 374
 375                 env = cl_env_get(&refcheck);
 376                 if (!IS_ERR(env)) {
 377                         (void)osc_lru_shrink(env, cli, rc, true);
 378                         cl_env_put(env, &refcheck);
 379                 }
 380         }
 381
 382         return count;
 383 }
 384 LPROC_SEQ_FOPS(mdc_cached_mb);
 385
 386 static int mdc_unstable_stats_seq_show(struct seq_file *m, void *v)
 387 {
 388         struct obd_device *obd = m->private;
 389         struct client_obd *cli = &obd->u.cli;
 390         long pages;
 391         int mb;
 392
 393         pages = atomic_long_read(&cli->cl_unstable_count);
 394         mb    = (pages * PAGE_SIZE) >> 20;
 395
 396         seq_printf(m, "unstable_pages: %20ld\n"
 397                    "unstable_mb:              %10d\n", pages, mb);
 398         return 0;
 399 }
 400 LPROC_SEQ_FOPS_RO(mdc_unstable_stats);
 401
 402 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
 403                                        const char __user *buf,
 404                                        size_t len, loff_t *off)
 405 {
 406         struct seq_file *seq = file->private_data;
 407         struct obd_device *obd = seq->private;
 408         struct client_obd *cli = &obd->u.cli;
 409
 410         lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
 411
 412         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 413         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 414         lprocfs_oh_clear(&cli->cl_read_page_hist);
 415         lprocfs_oh_clear(&cli->cl_write_page_hist);
 416         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 417         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 418
 419         return len;
 420 }
 421
 422 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 423 {
 424         struct obd_device *obd = seq->private;
 425         struct client_obd *cli = &obd->u.cli;
 426         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 427         int i;
 428
 429         obd_mod_rpc_stats_seq_show(cli, seq);
 430
 431         spin_lock(&cli->cl_loi_list_lock);
 432
 433         seq_printf(seq, "\nread RPCs in flight:  %d\n",
 434                    cli->cl_r_in_flight);
 435         seq_printf(seq, "write RPCs in flight: %d\n",
 436                    cli->cl_w_in_flight);
 437         seq_printf(seq, "pending write pages:  %d\n",
 438                    atomic_read(&cli->cl_pending_w_pages));
 439         seq_printf(seq, "pending read pages:   %d\n",
 440                    atomic_read(&cli->cl_pending_r_pages));
 441
 442         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 443         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 444         seq_printf(seq, "       rpcs   %% cum %%\n");
 445
 446         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 447         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 448
 449         read_cum = 0;
 450         write_cum = 0;
 451         for (i = 0; i < OBD_HIST_MAX; i++) {
 452                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 453                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 454
 455                 read_cum += r;
 456                 write_cum += w;
 457                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 458                            1 << i, r, pct(r, read_tot),
 459                            pct(read_cum, read_tot), w,
 460                            pct(w, write_tot),
 461                            pct(write_cum, write_tot));
 462                 if (read_cum == read_tot && write_cum == write_tot)
 463                         break;
 464         }
 465
 466         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 467         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 468         seq_printf(seq, "       rpcs   %% cum %%\n");
 469
 470         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 471         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 472
 473         read_cum = 0;
 474         write_cum = 0;
 475         for (i = 1; i < OBD_HIST_MAX; i++) {
 476                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 477                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 478
 479                 read_cum += r;
 480                 write_cum += w;
 481                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 482                            i, r, pct(r, read_tot), pct(read_cum, read_tot), w,
 483                            pct(w, write_tot), pct(write_cum, write_tot));
 484                 if (read_cum == read_tot && write_cum == write_tot)
 485                         break;
 486         }
 487
 488         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 489         seq_printf(seq, "offset                rpcs   %% cum %% |");
 490         seq_printf(seq, "       rpcs   %% cum %%\n");
 491
 492         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 493         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 494
 495         read_cum = 0;
 496         write_cum = 0;
 497         for (i = 0; i < OBD_HIST_MAX; i++) {
 498                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 499                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 500
 501                 read_cum += r;
 502                 write_cum += w;
 503                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 504                            (i == 0) ? 0 : 1 << (i - 1),
 505                            r, pct(r, read_tot), pct(read_cum, read_tot),
 506                            w, pct(w, write_tot), pct(write_cum, write_tot));
 507                 if (read_cum == read_tot && write_cum == write_tot)
 508                         break;
 509         }
 510         spin_unlock(&cli->cl_loi_list_lock);
 511
 512         return 0;
 513 }
 514 LPROC_SEQ_FOPS(mdc_rpc_stats);
 515
 516 static int mdc_stats_seq_show(struct seq_file *seq, void *v)
 517 {
 518         struct obd_device *obd = seq->private;
 519         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 520
 521         lprocfs_stats_header(seq, ktime_get(), stats->os_init, 25, ":", true);
 522         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 523                    stats->os_lockless_writes);
 524         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 525                    stats->os_lockless_reads);
 526         return 0;
 527 }
 528
 529 static ssize_t mdc_stats_seq_write(struct file *file,
 530                                    const char __user *buf,
 531                                    size_t len, loff_t *off)
 532 {
 533         struct seq_file *seq = file->private_data;
 534         struct obd_device *obd = seq->private;
 535         struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
 536
 537         memset(stats, 0, sizeof(*stats));
 538         stats->os_init = ktime_get();
 539
 540         return len;
 541 }
 542 LPROC_SEQ_FOPS(mdc_stats);
 543
 544 static int mdc_dom_min_repsize_seq_show(struct seq_file *m, void *v)
 545 {
 546         struct obd_device *obd = m->private;
 547
 548         seq_printf(m, "%u\n", obd->u.cli.cl_dom_min_inline_repsize);
 549
 550         return 0;
 551 }
 552
 553 static ssize_t mdc_dom_min_repsize_seq_write(struct file *file,
 554                                              const char __user *buffer,
 555                                              size_t count, loff_t *off)
 556 {
 557         struct seq_file *m = file->private_data;
 558         struct obd_device *obd = m->private;
 559         unsigned int val;
 560         int rc;
 561
 562         rc = kstrtouint_from_user(buffer, count, 0, &val);
 563         if (rc)
 564                 return rc;
 565
 566         if (val > MDC_DOM_MAX_INLINE_REPSIZE)
 567                 return -ERANGE;
 568
 569         obd->u.cli.cl_dom_min_inline_repsize = val;
 570         return count;
 571 }
 572 LPROC_SEQ_FOPS(mdc_dom_min_repsize);
 573
 574 static int mdc_lsom_seq_show(struct seq_file *m, void *v)
 575 {
 576         struct obd_device *dev = m->private;
 577
 578         seq_printf(m, "%s\n", dev->u.cli.cl_lsom_update ? "On" : "Off");
 579
 580         return 0;
 581 }
 582
 583 static ssize_t mdc_lsom_seq_write(struct file *file,
 584                                   const char __user *buffer,
 585                                   size_t count, loff_t *off)
 586 {
 587         struct obd_device *dev;
 588         bool val;
 589         int rc;
 590
 591         dev =  ((struct seq_file *)file->private_data)->private;
 592         rc = kstrtobool_from_user(buffer, count, &val);
 593         if (rc)
 594                 return rc;
 595
 596         dev->u.cli.cl_lsom_update = val;
 597         return count;
 598 }
 599 LPROC_SEQ_FOPS(mdc_lsom);
 600
 601
 602 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
 603 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 604 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
 605 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
 606 LPROC_SEQ_FOPS_RW_TYPE(mdc, obd_max_pages_per_rpc);
 607 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 608 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 609
 610 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 611         { .name =       "connect_flags",
 612           .fops =       &mdc_connect_flags_fops },
 613         { .name =       "mds_server_uuid",
 614           .fops =       &mdc_server_uuid_fops   },
 615         { .name =       "max_pages_per_rpc",
 616           .fops =       &mdc_obd_max_pages_per_rpc_fops },
 617         { .name =       "max_dirty_mb",
 618           .fops =       &mdc_max_dirty_mb_fops          },
 619         { .name =       "mdc_cached_mb",
 620           .fops =       &mdc_cached_mb_fops             },
 621         { .name =       "checksum_type",
 622           .fops =       &mdc_checksum_type_fops         },
 623         { .name =       "timeouts",
 624           .fops =       &mdc_timeouts_fops              },
 625         { .name =       "import",
 626           .fops =       &mdc_import_fops                },
 627         { .name =       "state",
 628           .fops =       &mdc_state_fops                 },
 629         { .name =       "pinger_recov",
 630           .fops =       &mdc_pinger_recov_fops          },
 631         { .name =       "rpc_stats",
 632           .fops =       &mdc_rpc_stats_fops             },
 633         { .name =       "unstable_stats",
 634           .fops =       &mdc_unstable_stats_fops        },
 635         { .name =       "mdc_stats",
 636           .fops =       &mdc_stats_fops                 },
 637         { .name =       "mdc_dom_min_repsize",
 638           .fops =       &mdc_dom_min_repsize_fops       },
 639         { .name =       "mdc_lsom",
 640           .fops =       &mdc_lsom_fops                  },
 641         { NULL }
 642 };
 643
 644 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 645                                          struct attribute *attr,
 646                                          char *buf)
 647 {
 648         struct obd_device *obd = container_of(kobj, struct obd_device,
 649                                               obd_kset.kobj);
 650         struct client_obd *cli = &obd->u.cli;
 651
 652         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_lost_grant);
 653 }
 654 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 655
 656 static ssize_t cur_dirty_grant_bytes_show(struct kobject *kobj,
 657                                           struct attribute *attr,
 658                                           char *buf)
 659 {
 660         struct obd_device *obd = container_of(kobj, struct obd_device,
 661                                               obd_kset.kobj);
 662         struct client_obd *cli = &obd->u.cli;
 663
 664         return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_dirty_grant);
 665 }
 666 LUSTRE_RO_ATTR(cur_dirty_grant_bytes);
 667
 668 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 669                                  char *buf)
 670 {
 671         struct obd_device *obd = container_of(kobj, struct obd_device,
 672                                               obd_kset.kobj);
 673         struct obd_import *imp;
 674         ssize_t len;
 675
 676         with_imp_locked(obd, imp, len)
 677                 len = scnprintf(buf, PAGE_SIZE, "%d\n",
 678                                 !imp->imp_grant_shrink_disabled &&
 679                                 OCD_HAS_FLAG(&imp->imp_connect_data,
 680                                              GRANT_SHRINK));
 681
 682         return len;
 683 }
 684
 685 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 686                                   const char *buffer, size_t count)
 687 {
 688         struct obd_device *obd = container_of(kobj, struct obd_device,
 689                                               obd_kset.kobj);
 690         struct obd_import *imp;
 691         bool val;
 692         int rc;
 693
 694         if (obd == NULL)
 695                 return 0;
 696
 697         rc = kstrtobool(buffer, &val);
 698         if (rc)
 699                 return rc;
 700
 701         with_imp_locked(obd, imp, rc) {
 702                 spin_lock(&imp->imp_lock);
 703                 imp->imp_grant_shrink_disabled = !val;
 704                 spin_unlock(&imp->imp_lock);
 705         }
 706
 707         return rc ?: count;
 708 }
 709 LUSTRE_RW_ATTR(grant_shrink);
 710
 711 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 712                                           struct attribute *attr,
 713                                           char *buf)
 714 {
 715         struct obd_device *obd = container_of(kobj, struct obd_device,
 716                                               obd_kset.kobj);
 717
 718         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 719 }
 720
 721 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 722                                            struct attribute *attr,
 723                                            const char *buffer,
 724                                            size_t count)
 725 {
 726         struct obd_device *obd = container_of(kobj, struct obd_device,
 727                                               obd_kset.kobj);
 728         unsigned int val;
 729         int rc;
 730
 731         rc = kstrtouint(buffer, 0, &val);
 732         if (rc)
 733                 return rc;
 734
 735         if (val == 0)
 736                 return -ERANGE;
 737
 738         obd->u.cli.cl_grant_shrink_interval = val;
 739         osc_update_next_shrink(&obd->u.cli);
 740         osc_schedule_grant_work();
 741
 742         return count;
 743 }
 744 LUSTRE_RW_ATTR(grant_shrink_interval);
 745
 746 static struct attribute *mdc_attrs[] = {
 747         &lustre_attr_active.attr,
 748         &lustre_attr_checksums.attr,
 749         &lustre_attr_checksum_dump.attr,
 750         &lustre_attr_max_rpcs_in_flight.attr,
 751         &lustre_attr_max_mod_rpcs_in_flight.attr,
 752         &lustre_attr_mds_conn_uuid.attr,
 753         &lustre_attr_conn_uuid.attr,
 754         &lustre_attr_ping.attr,
 755         &lustre_attr_grant_shrink.attr,
 756         &lustre_attr_grant_shrink_interval.attr,
 757         &lustre_attr_cur_lost_grant_bytes.attr,
 758         &lustre_attr_cur_dirty_grant_bytes.attr,
 759         NULL,
 760 };
 761
 762 int mdc_tunables_init(struct obd_device *obd)
 763 {
 764         int rc;
 765
 766         obd->obd_ktype.default_attrs = mdc_attrs;
 767         obd->obd_vars = lprocfs_mdc_obd_vars;
 768
 769         rc = lprocfs_obd_setup(obd, false);
 770         if (rc)
 771                 goto out_failed;
 772 #ifdef CONFIG_PROC_FS
 773         rc = lprocfs_alloc_md_stats(obd, 0);
 774         if (rc) {
 775                 lprocfs_obd_cleanup(obd);
 776                 goto out_failed;
 777         }
 778 #endif
 779         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 780         if (rc) {
 781 #ifdef CONFIG_PROC_FS
 782                 lprocfs_free_md_stats(obd);
 783 #endif
 784                 lprocfs_obd_cleanup(obd);
 785                 goto out_failed;
 786         }
 787         ptlrpc_lprocfs_register_obd(obd);
 788
 789 out_failed:
 790         return rc;
 791 }