lustre/ptlrpc/lproc_ptlrpc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  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 #ifndef __KERNEL__
  39 # include <liblustre.h>
  40 #endif
  41
  42 #include <obd_support.h>
  43 #include <obd.h>
  44 #include <lprocfs_status.h>
  45 #include <lustre/lustre_idl.h>
  46 #include <lustre_net.h>
  47 #include <obd_class.h>
  48 #include "ptlrpc_internal.h"
  49
  50
  51 struct ll_rpc_opcode {
  52      __u32       opcode;
  53      const char *opname;
  54 } ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
  55         { OST_REPLY,        "ost_reply" },
  56         { OST_GETATTR,      "ost_getattr" },
  57         { OST_SETATTR,      "ost_setattr" },
  58         { OST_READ,         "ost_read" },
  59         { OST_WRITE,        "ost_write" },
  60         { OST_CREATE ,      "ost_create" },
  61         { OST_DESTROY,      "ost_destroy" },
  62         { OST_GET_INFO,     "ost_get_info" },
  63         { OST_CONNECT,      "ost_connect" },
  64         { OST_DISCONNECT,   "ost_disconnect" },
  65         { OST_PUNCH,        "ost_punch" },
  66         { OST_OPEN,         "ost_open" },
  67         { OST_CLOSE,        "ost_close" },
  68         { OST_STATFS,       "ost_statfs" },
  69         { 14,                NULL },    /* formerly OST_SAN_READ */
  70         { 15,                NULL },    /* formerly OST_SAN_WRITE */
  71         { OST_SYNC,         "ost_sync" },
  72         { OST_SET_INFO,     "ost_set_info" },
  73         { OST_QUOTACHECK,   "ost_quotacheck" },
  74         { OST_QUOTACTL,     "ost_quotactl" },
  75         { OST_QUOTA_ADJUST_QUNIT, "ost_quota_adjust_qunit" },
  76         { MDS_GETATTR,      "mds_getattr" },
  77         { MDS_GETATTR_NAME, "mds_getattr_lock" },
  78         { MDS_CLOSE,        "mds_close" },
  79         { MDS_REINT,        "mds_reint" },
  80         { MDS_READPAGE,     "mds_readpage" },
  81         { MDS_CONNECT,      "mds_connect" },
  82         { MDS_DISCONNECT,   "mds_disconnect" },
  83         { MDS_GETSTATUS,    "mds_getstatus" },
  84         { MDS_STATFS,       "mds_statfs" },
  85         { MDS_PIN,          "mds_pin" },
  86         { MDS_UNPIN,        "mds_unpin" },
  87         { MDS_SYNC,         "mds_sync" },
  88         { MDS_DONE_WRITING, "mds_done_writing" },
  89         { MDS_SET_INFO,     "mds_set_info" },
  90         { MDS_QUOTACHECK,   "mds_quotacheck" },
  91         { MDS_QUOTACTL,     "mds_quotactl" },
  92         { MDS_GETXATTR,     "mds_getxattr" },
  93         { MDS_SETXATTR,     "mds_setxattr" },
  94         { LDLM_ENQUEUE,     "ldlm_enqueue" },
  95         { LDLM_CONVERT,     "ldlm_convert" },
  96         { LDLM_CANCEL,      "ldlm_cancel" },
  97         { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
  98         { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
  99         { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
 100         { MGS_CONNECT,      "mgs_connect" },
 101         { MGS_DISCONNECT,   "mgs_disconnect" },
 102         { MGS_EXCEPTION,    "mgs_exception" },
 103         { MGS_TARGET_REG,   "mgs_target_reg" },
 104         { MGS_TARGET_DEL,   "mgs_target_del" },
 105         { MGS_SET_INFO,     "mgs_set_info" },
 106         { OBD_PING,         "obd_ping" },
 107         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
 108         { OBD_QC_CALLBACK,  "obd_quota_callback" },
 109         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
 110         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block"},
 111         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
 112         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
 113         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
 114         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
 115         { LLOG_CATINFO,                  "llog_catinfo" },
 116         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
 117         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
 118         { QUOTA_DQACQ,      "quota_acquire" },
 119         { QUOTA_DQREL,      "quota_release" },
 120         { SEQ_QUERY,        "seq_query" },
 121 };
 122
 123 struct ll_eopcode {
 124      __u32       opcode;
 125      const char *opname;
 126 } ll_eopcode_table[EXTRA_LAST_OPC] = {
 127         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
 128         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
 129         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
 130         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
 131         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
 132         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
 133         { MDS_REINT_CREATE,     "mds_reint_create" },
 134         { MDS_REINT_LINK,       "mds_reint_link" },
 135         { MDS_REINT_UNLINK,     "mds_reint_unlink" },
 136         { MDS_REINT_RENAME,     "mds_reint_rename" },
 137         { MDS_REINT_OPEN,       "mds_reint_open" },
 138         { BRW_READ_BYTES,       "read_bytes" },
 139         { BRW_WRITE_BYTES,      "write_bytes" },
 140 };
 141
 142 const char *ll_opcode2str(__u32 opcode)
 143 {
 144         /* When one of the assertions below fail, chances are that:
 145          *     1) A new opcode was added in include/lustre/lustre_idl.h,
 146          *        but is missing from the table above.
 147          * or  2) The opcode space was renumbered or rearranged,
 148          *        and the opcode_offset() function in
 149          *        ptlrpc_internal.h needs to be modified.
 150          */
 151         __u32 offset = opcode_offset(opcode);
 152         LASSERTF(offset < LUSTRE_MAX_OPCODES,
 153                  "offset %u >= LUSTRE_MAX_OPCODES %u\n",
 154                  offset, LUSTRE_MAX_OPCODES);
 155         LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
 156                  "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
 157                  offset, ll_rpc_opcode_table[offset].opcode, opcode);
 158         return ll_rpc_opcode_table[offset].opname;
 159 }
 160
 161 const char* ll_eopcode2str(__u32 opcode)
 162 {
 163         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
 164         return ll_eopcode_table[opcode].opname;
 165 }
 166
 167 #ifdef LPROCFS
 168 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
 169                              char *name, struct proc_dir_entry **procroot_ret,
 170                              struct lprocfs_stats **stats_ret)
 171 {
 172         struct proc_dir_entry *svc_procroot;
 173         struct lprocfs_stats *svc_stats;
 174         int i, rc;
 175         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
 176                                           LPROCFS_CNTR_STDDEV;
 177
 178         LASSERT(*procroot_ret == NULL);
 179         LASSERT(*stats_ret == NULL);
 180
 181         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES + LUSTRE_MAX_OPCODES, 0);
 182         if (svc_stats == NULL)
 183                 return;
 184
 185         if (dir) {
 186                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
 187                 if (IS_ERR(svc_procroot)) {
 188                         lprocfs_free_stats(&svc_stats);
 189                         return;
 190                 }
 191         } else {
 192                 svc_procroot = root;
 193         }
 194
 195         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
 196                              svc_counter_config, "req_waittime", "usec");
 197         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
 198                              svc_counter_config, "req_qdepth", "reqs");
 199         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
 200                              svc_counter_config, "req_active", "reqs");
 201         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
 202                              svc_counter_config, "req_timeout", "sec");
 203         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
 204                              svc_counter_config, "reqbuf_avail", "bufs");
 205         for (i = 0; i < EXTRA_LAST_OPC; i++) {
 206                 char *units;
 207
 208                 switch(i) {
 209                 case BRW_WRITE_BYTES:
 210                 case BRW_READ_BYTES:
 211                         units = "bytes";
 212                         break;
 213                 default:
 214                         units = "reqs";
 215                         break;
 216                 }
 217                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
 218                                      svc_counter_config,
 219                                      ll_eopcode2str(i), units);
 220         }
 221         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
 222                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
 223                 lprocfs_counter_init(svc_stats,
 224                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
 225                                      ll_opcode2str(opcode), "usec");
 226         }
 227
 228         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
 229         if (rc < 0) {
 230                 if (dir)
 231                         lprocfs_remove(&svc_procroot);
 232                 lprocfs_free_stats(&svc_stats);
 233         } else {
 234                 if (dir)
 235                         *procroot_ret = svc_procroot;
 236                 *stats_ret = svc_stats;
 237         }
 238 }
 239
 240 static int
 241 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
 242                                     int count, int *eof, void *data)
 243 {
 244         struct ptlrpc_service *svc = data;
 245
 246         *eof = 1;
 247         return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds);
 248 }
 249
 250 static int
 251 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
 252                                     int count, int *eof, void *data)
 253 {
 254         struct ptlrpc_service *svc = data;
 255
 256         *eof = 1;
 257         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
 258 }
 259
 260 static int
 261 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
 262                                      unsigned long count, void *data)
 263 {
 264         struct ptlrpc_service *svc = data;
 265         int                    bufpages;
 266         int                    val;
 267         int                    rc = lprocfs_write_helper(buffer, count, &val);
 268
 269         if (rc < 0)
 270                 return rc;
 271
 272         if (val < 0)
 273                 return -ERANGE;
 274
 275         /* This sanity check is more of an insanity check; we can still
 276          * hose a kernel by allowing the request history to grow too
 277          * far. */
 278         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
 279         if (val > num_physpages/(2*bufpages))
 280                 return -ERANGE;
 281
 282         spin_lock(&svc->srv_lock);
 283         svc->srv_max_history_rqbds = val;
 284         spin_unlock(&svc->srv_lock);
 285
 286         return count;
 287 }
 288
 289 struct ptlrpc_srh_iterator {
 290         __u64                  srhi_seq;
 291         struct ptlrpc_request *srhi_req;
 292 };
 293
 294 int
 295 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 296                                     struct ptlrpc_srh_iterator *srhi,
 297                                     __u64 seq)
 298 {
 299         struct list_head      *e;
 300         struct ptlrpc_request *req;
 301
 302         if (srhi->srhi_req != NULL &&
 303             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 304             srhi->srhi_seq <= seq) {
 305                 /* If srhi_req was set previously, hasn't been culled and
 306                  * we're searching for a seq on or after it (i.e. more
 307                  * recent), search from it onwards.
 308                  * Since the service history is LRU (i.e. culled reqs will
 309                  * be near the head), we shouldn't have to do long
 310                  * re-scans */
 311                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 312                 LASSERT (!list_empty(&svc->srv_request_history));
 313                 e = &srhi->srhi_req->rq_history_list;
 314         } else {
 315                 /* search from start */
 316                 e = svc->srv_request_history.next;
 317         }
 318
 319         while (e != &svc->srv_request_history) {
 320                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 321
 322                 if (req->rq_history_seq >= seq) {
 323                         srhi->srhi_seq = req->rq_history_seq;
 324                         srhi->srhi_req = req;
 325                         return 0;
 326                 }
 327                 e = e->next;
 328         }
 329
 330         return -ENOENT;
 331 }
 332
 333 static void *
 334 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 335 {
 336         struct ptlrpc_service       *svc = s->private;
 337         struct ptlrpc_srh_iterator  *srhi;
 338         int                          rc;
 339
 340         OBD_ALLOC(srhi, sizeof(*srhi));
 341         if (srhi == NULL)
 342                 return NULL;
 343
 344         srhi->srhi_seq = 0;
 345         srhi->srhi_req = NULL;
 346
 347         spin_lock(&svc->srv_lock);
 348         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 349         spin_unlock(&svc->srv_lock);
 350
 351         if (rc == 0) {
 352                 *pos = srhi->srhi_seq;
 353                 return srhi;
 354         }
 355
 356         OBD_FREE(srhi, sizeof(*srhi));
 357         return NULL;
 358 }
 359
 360 static void
 361 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 362 {
 363         struct ptlrpc_srh_iterator *srhi = iter;
 364
 365         if (srhi != NULL)
 366                 OBD_FREE(srhi, sizeof(*srhi));
 367 }
 368
 369 static void *
 370 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 371                                     void *iter, loff_t *pos)
 372 {
 373         struct ptlrpc_service       *svc = s->private;
 374         struct ptlrpc_srh_iterator  *srhi = iter;
 375         int                          rc;
 376
 377         spin_lock(&svc->srv_lock);
 378         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 379         spin_unlock(&svc->srv_lock);
 380
 381         if (rc != 0) {
 382                 OBD_FREE(srhi, sizeof(*srhi));
 383                 return NULL;
 384         }
 385
 386         *pos = srhi->srhi_seq;
 387         return srhi;
 388 }
 389
 390 /* common ost/mdt srv_request_history_print_fn */
 391 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 392 {
 393         /* Called holding srv_lock with irqs disabled.
 394          * Print specific req contents and a newline.
 395          * CAVEAT EMPTOR: check request message length before printing!!!
 396          * You might have received any old crap so you must be just as
 397          * careful here as the service's request parser!!! */
 398         struct seq_file *sf = seq_file;
 399
 400         switch (req->rq_phase) {
 401         case RQ_PHASE_NEW:
 402                 /* still awaiting a service thread's attention, or rejected
 403                  * because the generic request message didn't unpack */
 404                 seq_printf(sf, "<not swabbed>\n");
 405                 break;
 406         case RQ_PHASE_INTERPRET:
 407                 /* being handled, so basic msg swabbed, and opc is valid
 408                  * but racing with mds_handle() */
 409         case RQ_PHASE_COMPLETE:
 410                 /* been handled by mds_handle() reply state possibly still
 411                  * volatile */
 412                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 413                 break;
 414         default:
 415                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 416         }
 417 }
 418 EXPORT_SYMBOL(target_print_req);
 419
 420 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 421 {
 422         struct ptlrpc_service      *svc = s->private;
 423         struct ptlrpc_srh_iterator *srhi = iter;
 424         struct ptlrpc_request      *req;
 425         int                         rc;
 426
 427         spin_lock(&svc->srv_lock);
 428
 429         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 430
 431         if (rc == 0) {
 432                 req = srhi->srhi_req;
 433
 434                 /* Print common req fields.
 435                  * CAVEAT EMPTOR: we're racing with the service handler
 436                  * here.  The request could contain any old crap, so you
 437                  * must be just as careful as the service's request
 438                  * parser. Currently I only print stuff here I know is OK
 439                  * to look at coz it was set up in request_in_callback()!!! */
 440                 seq_printf(s, LPD64":%s:%s:x"LPD64":%d:%s:%ld:%lds(%+lds) ",
 441                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 442                            libcfs_id2str(req->rq_peer), req->rq_xid,
 443                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 444                            req->rq_arrival_time.tv_sec,
 445                            req->rq_sent - req->rq_arrival_time.tv_sec,
 446                            req->rq_sent - req->rq_deadline);
 447                 if (svc->srv_request_history_print_fn == NULL)
 448                         seq_printf(s, "\n");
 449                 else
 450                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 451         }
 452
 453         spin_unlock(&svc->srv_lock);
 454
 455         return rc;
 456 }
 457
 458 static int
 459 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 460 {
 461         static struct seq_operations sops = {
 462                 .start = ptlrpc_lprocfs_svc_req_history_start,
 463                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 464                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 465                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 466         };
 467         struct proc_dir_entry *dp = PDE(inode);
 468         struct seq_file       *seqf;
 469         int                    rc;
 470
 471         LPROCFS_ENTRY_AND_CHECK(dp);
 472         rc = seq_open(file, &sops);
 473         if (rc) {
 474                 LPROCFS_EXIT();
 475                 return rc;
 476         }
 477
 478         seqf = file->private_data;
 479         seqf->private = dp->data;
 480         return 0;
 481 }
 482
 483 /* See also lprocfs_rd_timeouts */
 484 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 485                                       int count, int *eof, void *data)
 486 {
 487         struct ptlrpc_service *svc = data;
 488         unsigned int cur, worst;
 489         time_t worstt;
 490         struct dhms ts;
 491         int rc = 0;
 492
 493         *eof = 1;
 494         cur = at_get(&svc->srv_at_estimate);
 495         worst = svc->srv_at_estimate.at_worst_ever;
 496         worstt = svc->srv_at_estimate.at_worst_time;
 497         s2dhms(&ts, cfs_time_current_sec() - worstt);
 498         if (AT_OFF)
 499                 rc += snprintf(page + rc, count - rc,
 500                               "adaptive timeouts off, using obd_timeout %u\n",
 501                               obd_timeout);
 502         rc += snprintf(page + rc, count - rc,
 503                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 504                        "service", cur, worst, worstt,
 505                        DHMS_VARS(&ts));
 506         rc = lprocfs_at_hist_helper(page, count, rc,
 507                                     &svc->srv_at_estimate);
 508         return rc;
 509 }
 510
 511 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
 512                                       int count, int *eof, void *data)
 513 {
 514         struct ptlrpc_service *svc = data;
 515         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
 516         return rc;
 517 }
 518
 519 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
 520                                       unsigned long count, void *data)
 521 {
 522         struct ptlrpc_service *svc = data;
 523         int rc, val;
 524
 525         rc = lprocfs_write_helper(buffer, count, &val);
 526         if (rc < 0)
 527                 return rc;
 528         if (val < 0)
 529                 return -ERANGE;
 530
 531         spin_lock(&svc->srv_lock);
 532         svc->srv_hpreq_ratio = val;
 533         spin_unlock(&svc->srv_lock);
 534         return count;
 535 }
 536
 537 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 538                                      struct ptlrpc_service *svc)
 539 {
 540         struct lprocfs_vars lproc_vars[] = {
 541                 {.name       = "req_buffer_history_len",
 542                  .write_fptr = NULL,
 543                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 544                  .data       = svc},
 545                 {.name       = "req_buffer_history_max",
 546                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 547                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 548                  .data       = svc},
 549                 {.name       = "timeouts",
 550                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 551                  .data       = svc},
 552                 {.name       = "high_priority_ratio",
 553                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
 554                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
 555                  .data       = svc},
 556                 {NULL}
 557         };
 558         static struct file_operations req_history_fops = {
 559                 .owner       = THIS_MODULE,
 560                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 561                 .read        = seq_read,
 562                 .llseek      = seq_lseek,
 563                 .release     = lprocfs_seq_release,
 564         };
 565         struct proc_dir_entry *req_history;
 566
 567         ptlrpc_lprocfs_register(entry, svc->srv_name,
 568                                 "stats", &svc->srv_procroot,
 569                                 &svc->srv_stats);
 570
 571         if (svc->srv_procroot == NULL)
 572                 return;
 573
 574         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 575
 576         req_history = create_proc_entry("req_history", 0400,
 577                                         svc->srv_procroot);
 578         if (req_history != NULL) {
 579                 req_history->data = svc;
 580                 req_history->proc_fops = &req_history_fops;
 581         }
 582 }
 583
 584 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 585 {
 586         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 587                                 &obddev->obd_svc_procroot,
 588                                 &obddev->obd_svc_stats);
 589 }
 590 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 591
 592 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req)
 593 {
 594         struct lprocfs_stats *svc_stats;
 595         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 596         int opc = opcode_offset(op);
 597
 598         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 599         if (svc_stats == NULL || opc <= 0)
 600                 return;
 601         LASSERT(opc < LUSTRE_MAX_OPCODES);
 602         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
 603                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, 0);
 604 }
 605
 606 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
 607 {
 608         struct lprocfs_stats *svc_stats;
 609         int idx;
 610
 611         if (!req->rq_import)
 612                 return;
 613         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 614         if (!svc_stats)
 615                 return;
 616         idx = lustre_msg_get_opc(req->rq_reqmsg);
 617         switch (idx) {
 618         case OST_READ:
 619                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
 620                 break;
 621         case OST_WRITE:
 622                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
 623                 break;
 624         default:
 625                 LASSERTF(0, "unsupported opcode %u\n", idx);
 626                 break;
 627         }
 628
 629         lprocfs_counter_add(svc_stats, idx, bytes);
 630 }
 631
 632 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 633
 634 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 635 {
 636         if (svc->srv_procroot != NULL)
 637                 lprocfs_remove(&svc->srv_procroot);
 638         if (svc->srv_stats)
 639                 lprocfs_free_stats(&svc->srv_stats);
 640 }
 641
 642 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 643 {
 644         if (obd->obd_svc_procroot)
 645                 lprocfs_remove(&obd->obd_svc_procroot);
 646         if (obd->obd_svc_stats)
 647                 lprocfs_free_stats(&obd->obd_svc_stats);
 648 }
 649 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 650
 651
 652 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 653                             unsigned long count, void *data)
 654 {
 655         struct obd_device *obd = data;
 656         char tmpbuf[sizeof(struct obd_uuid)];
 657
 658         /* Kludge code(deadlock situation): the lprocfs lock has been held
 659          * since the client is evicted by writting client's
 660          * uuid/nid to procfs "evict_client" entry. However,
 661          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 662          * the proc entries under the being destroyed export{}, so I have
 663          * to drop the lock at first here.
 664          * - jay, jxiong@clusterfs.com */
 665         class_incref(obd);
 666         LPROCFS_EXIT();
 667
 668         sscanf(buffer, "%40s", tmpbuf);
 669         if (strncmp(tmpbuf, "nid:", 4) == 0)
 670                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 671         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 672                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 673         else
 674                 obd_export_evict_by_uuid(obd, tmpbuf);
 675
 676         LPROCFS_ENTRY();
 677         class_decref(obd);
 678
 679         return count;
 680 }
 681 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 682
 683 int lprocfs_wr_ping(struct file *file, const char *buffer,
 684                     unsigned long count, void *data)
 685 {
 686         struct obd_device *obd = data;
 687         struct ptlrpc_request *req;
 688         int rc;
 689         ENTRY;
 690
 691         LPROCFS_CLIMP_CHECK(obd);
 692         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
 693         LPROCFS_CLIMP_EXIT(obd);
 694         if (req == NULL)
 695                 RETURN(-ENOMEM);
 696
 697         req->rq_send_state = LUSTRE_IMP_FULL;
 698
 699         rc = ptlrpc_queue_wait(req);
 700
 701         ptlrpc_req_finished(req);
 702         if (rc >= 0)
 703                 RETURN(count);
 704         RETURN(rc);
 705 }
 706 EXPORT_SYMBOL(lprocfs_wr_ping);
 707
 708 #endif /* LPROCFS */