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  *  Copyright (C) 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  *
  24  */
  25 #define DEBUG_SUBSYSTEM S_CLASS
  26
  27 #ifndef __KERNEL__
  28 # include <liblustre.h>
  29 #endif
  30
  31 #include <obd_support.h>
  32 #include <obd.h>
  33 #include <lprocfs_status.h>
  34 #include <lustre/lustre_idl.h>
  35 #include <lustre_net.h>
  36 #include <obd_class.h>
  37 #include "ptlrpc_internal.h"
  38
  39
  40 struct ll_rpc_opcode {
  41      __u32       opcode;
  42      const char *opname;
  43 } ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
  44         { OST_REPLY,        "ost_reply" },
  45         { OST_GETATTR,      "ost_getattr" },
  46         { OST_SETATTR,      "ost_setattr" },
  47         { OST_READ,         "ost_read" },
  48         { OST_WRITE,        "ost_write" },
  49         { OST_CREATE ,      "ost_create" },
  50         { OST_DESTROY,      "ost_destroy" },
  51         { OST_GET_INFO,     "ost_get_info" },
  52         { OST_CONNECT,      "ost_connect" },
  53         { OST_DISCONNECT,   "ost_disconnect" },
  54         { OST_PUNCH,        "ost_punch" },
  55         { OST_OPEN,         "ost_open" },
  56         { OST_CLOSE,        "ost_close" },
  57         { OST_STATFS,       "ost_statfs" },
  58         { 14,                NULL },    /* formerly OST_SAN_READ */
  59         { 15,                NULL },    /* formerly OST_SAN_WRITE */
  60         { OST_SYNC,         "ost_sync" },
  61         { OST_SET_INFO,     "ost_set_info" },
  62         { OST_QUOTACHECK,   "ost_quotacheck" },
  63         { OST_QUOTACTL,     "ost_quotactl" },
  64         { MDS_GETATTR,      "mds_getattr" },
  65         { MDS_GETATTR_NAME, "mds_getattr_lock" },
  66         { MDS_CLOSE,        "mds_close" },
  67         { MDS_REINT,        "mds_reint" },
  68         { MDS_READPAGE,     "mds_readpage" },
  69         { MDS_CONNECT,      "mds_connect" },
  70         { MDS_DISCONNECT,   "mds_disconnect" },
  71         { MDS_GETSTATUS,    "mds_getstatus" },
  72         { MDS_STATFS,       "mds_statfs" },
  73         { MDS_PIN,          "mds_pin" },
  74         { MDS_UNPIN,        "mds_unpin" },
  75         { MDS_SYNC,         "mds_sync" },
  76         { MDS_DONE_WRITING, "mds_done_writing" },
  77         { MDS_SET_INFO,     "mds_set_info" },
  78         { MDS_QUOTACHECK,   "mds_quotacheck" },
  79         { MDS_QUOTACTL,     "mds_quotactl" },
  80         { MDS_GETXATTR,     "mds_getxattr" },
  81         { MDS_SETXATTR,     "mds_setxattr" },
  82         { MDS_WRITEPAGE,    "mds_writepage" },
  83         { MDS_IS_SUBDIR,    "mds_is_subdir" },
  84         { LDLM_ENQUEUE,     "ldlm_enqueue" },
  85         { LDLM_CONVERT,     "ldlm_convert" },
  86         { LDLM_CANCEL,      "ldlm_cancel" },
  87         { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
  88         { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
  89         { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
  90         { MGS_CONNECT,      "mgs_connect" },
  91         { MGS_DISCONNECT,   "mgs_disconnect" },
  92         { MGS_EXCEPTION,    "mgs_exception" },
  93         { MGS_TARGET_REG,   "mgs_target_reg" },
  94         { MGS_TARGET_DEL,   "mgs_target_del" },
  95         { MGS_SET_INFO,     "mgs_set_info" },
  96         { OBD_PING,         "obd_ping" },
  97         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
  98         { OBD_QC_CALLBACK,  "obd_qc_callback" },
  99         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
 100         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
 101         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
 102         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
 103         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
 104         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
 105         { LLOG_CATINFO,                  "llog_catinfo" },
 106         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
 107         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
 108         { FLD_QUERY,        "fld_query" },
 109         { SEQ_QUERY,        "seq_query" },
 110         { SEC_CTX_INIT,     "sec_ctx_init" },
 111         { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
 112         { SEC_CTX_FINI,     "sec_ctx_fini" }
 113 };
 114
 115 struct ll_eopcode {
 116      __u32       opcode;
 117      const char *opname;
 118 } ll_eopcode_table[EXTRA_LAST_OPC] = {
 119         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
 120         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
 121         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
 122         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
 123         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
 124         { MDS_REINT_CREATE,     "mds_reint_create" },
 125         { MDS_REINT_LINK,       "mds_reint_link" },
 126         { MDS_REINT_OPEN,       "mds_reint_open" },
 127         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
 128         { MDS_REINT_RENAME,     "mds_reint_rename" },
 129         { MDS_REINT_UNLINK,     "mds_reint_unlink" }
 130 };
 131
 132 const char *ll_opcode2str(__u32 opcode)
 133 {
 134         /* When one of the assertions below fail, chances are that:
 135          *     1) A new opcode was added in lustre_idl.h, but was
 136          *        is missing from the table above.
 137          * or  2) The opcode space was renumbered or rearranged,
 138          *        and the opcode_offset() function in
 139          *        ptlrpc_internal.h needs to be modified.
 140          */
 141         __u32 offset = opcode_offset(opcode);
 142         LASSERT(offset < LUSTRE_MAX_OPCODES);
 143         LASSERT(ll_rpc_opcode_table[offset].opcode == opcode);
 144         return ll_rpc_opcode_table[offset].opname;
 145 }
 146
 147 const char* ll_eopcode2str(__u32 opcode)
 148 {
 149         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
 150         return ll_eopcode_table[opcode].opname;
 151 }
 152 #ifdef LPROCFS
 153 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
 154                              char *name, struct proc_dir_entry **procroot_ret,
 155                              struct lprocfs_stats **stats_ret)
 156 {
 157         struct proc_dir_entry *svc_procroot;
 158         struct lprocfs_stats *svc_stats;
 159         int i, rc;
 160         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
 161                                           LPROCFS_CNTR_STDDEV;
 162
 163         LASSERT(*procroot_ret == NULL);
 164         LASSERT(*stats_ret == NULL);
 165
 166         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES + LUSTRE_MAX_OPCODES, 0);
 167         if (svc_stats == NULL)
 168                 return;
 169
 170         if (dir) {
 171                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
 172                 if (IS_ERR(svc_procroot)) {
 173                         lprocfs_free_stats(&svc_stats);
 174                         return;
 175                 }
 176         } else {
 177                 svc_procroot = root;
 178         }
 179
 180         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
 181                              svc_counter_config, "req_waittime", "usec");
 182         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
 183                              svc_counter_config, "req_qdepth", "reqs");
 184         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
 185                              svc_counter_config, "req_active", "reqs");
 186         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
 187                              svc_counter_config, "req_timeout", "sec");
 188         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
 189                              svc_counter_config, "reqbuf_avail", "bufs");
 190         for (i = 0; i < EXTRA_LAST_OPC; i++) {
 191                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
 192                                      svc_counter_config,
 193                                      ll_eopcode2str(i), "reqs");
 194         }
 195         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
 196                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
 197                 lprocfs_counter_init(svc_stats,
 198                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
 199                                      ll_opcode2str(opcode), "usec");
 200         }
 201
 202         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
 203         if (rc < 0) {
 204                 if (dir)
 205                         lprocfs_remove(&svc_procroot);
 206                 lprocfs_free_stats(&svc_stats);
 207         } else {
 208                 if (dir)
 209                         *procroot_ret = svc_procroot;
 210                 *stats_ret = svc_stats;
 211         }
 212 }
 213
 214 static int
 215 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
 216                                     int count, int *eof, void *data)
 217 {
 218         struct ptlrpc_service *svc = data;
 219
 220         *eof = 1;
 221         return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds);
 222 }
 223
 224 static int
 225 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
 226                                     int count, int *eof, void *data)
 227 {
 228         struct ptlrpc_service *svc = data;
 229
 230         *eof = 1;
 231         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
 232 }
 233
 234 static int
 235 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
 236                                      unsigned long count, void *data)
 237 {
 238         struct ptlrpc_service *svc = data;
 239         int                    bufpages;
 240         int                    val;
 241         int                    rc = lprocfs_write_helper(buffer, count, &val);
 242
 243         if (rc < 0)
 244                 return rc;
 245
 246         if (val < 0)
 247                 return -ERANGE;
 248
 249         /* This sanity check is more of an insanity check; we can still
 250          * hose a kernel by allowing the request history to grow too
 251          * far. */
 252         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
 253         if (val > num_physpages/(2 * bufpages))
 254                 return -ERANGE;
 255
 256         spin_lock(&svc->srv_lock);
 257         svc->srv_max_history_rqbds = val;
 258         spin_unlock(&svc->srv_lock);
 259
 260         return count;
 261 }
 262
 263 struct ptlrpc_srh_iterator {
 264         __u64                  srhi_seq;
 265         struct ptlrpc_request *srhi_req;
 266 };
 267
 268 int
 269 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 270                                     struct ptlrpc_srh_iterator *srhi,
 271                                     __u64 seq)
 272 {
 273         struct list_head      *e;
 274         struct ptlrpc_request *req;
 275
 276         if (srhi->srhi_req != NULL &&
 277             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 278             srhi->srhi_seq <= seq) {
 279                 /* If srhi_req was set previously, hasn't been culled and
 280                  * we're searching for a seq on or after it (i.e. more
 281                  * recent), search from it onwards.
 282                  * Since the service history is LRU (i.e. culled reqs will
 283                  * be near the head), we shouldn't have to do long
 284                  * re-scans */
 285                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 286                 LASSERT (!list_empty(&svc->srv_request_history));
 287                 e = &srhi->srhi_req->rq_history_list;
 288         } else {
 289                 /* search from start */
 290                 e = svc->srv_request_history.next;
 291         }
 292
 293         while (e != &svc->srv_request_history) {
 294                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 295
 296                 if (req->rq_history_seq >= seq) {
 297                         srhi->srhi_seq = req->rq_history_seq;
 298                         srhi->srhi_req = req;
 299                         return 0;
 300                 }
 301                 e = e->next;
 302         }
 303
 304         return -ENOENT;
 305 }
 306
 307 static void *
 308 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 309 {
 310         struct ptlrpc_service       *svc = s->private;
 311         struct ptlrpc_srh_iterator  *srhi;
 312         int                          rc;
 313
 314         OBD_ALLOC(srhi, sizeof(*srhi));
 315         if (srhi == NULL)
 316                 return NULL;
 317
 318         srhi->srhi_seq = 0;
 319         srhi->srhi_req = NULL;
 320
 321         spin_lock(&svc->srv_lock);
 322         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 323         spin_unlock(&svc->srv_lock);
 324
 325         if (rc == 0) {
 326                 *pos = srhi->srhi_seq;
 327                 return srhi;
 328         }
 329
 330         OBD_FREE(srhi, sizeof(*srhi));
 331         return NULL;
 332 }
 333
 334 static void
 335 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 336 {
 337         struct ptlrpc_srh_iterator *srhi = iter;
 338
 339         if (srhi != NULL)
 340                 OBD_FREE(srhi, sizeof(*srhi));
 341 }
 342
 343 static void *
 344 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 345                                     void *iter, loff_t *pos)
 346 {
 347         struct ptlrpc_service       *svc = s->private;
 348         struct ptlrpc_srh_iterator  *srhi = iter;
 349         int                          rc;
 350
 351         spin_lock(&svc->srv_lock);
 352         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 353         spin_unlock(&svc->srv_lock);
 354
 355         if (rc != 0) {
 356                 OBD_FREE(srhi, sizeof(*srhi));
 357                 return NULL;
 358         }
 359
 360         *pos = srhi->srhi_seq;
 361         return srhi;
 362 }
 363
 364 /* common ost/mdt srv_request_history_print_fn */
 365 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 366 {
 367         /* Called holding srv_lock with irqs disabled.
 368          * Print specific req contents and a newline.
 369          * CAVEAT EMPTOR: check request message length before printing!!!
 370          * You might have received any old crap so you must be just as
 371          * careful here as the service's request parser!!! */
 372         struct seq_file *sf = seq_file;
 373
 374         switch (req->rq_phase) {
 375         case RQ_PHASE_NEW:
 376                 /* still awaiting a service thread's attention, or rejected
 377                  * because the generic request message didn't unpack */
 378                 seq_printf(sf, "<not swabbed>\n");
 379                 break;
 380         case RQ_PHASE_INTERPRET:
 381                 /* being handled, so basic msg swabbed, and opc is valid
 382                  * but racing with mds_handle() */
 383         case RQ_PHASE_COMPLETE:
 384                 /* been handled by mds_handle() reply state possibly still
 385                  * volatile */
 386                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 387                 break;
 388         default:
 389                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 390         }
 391 }
 392 EXPORT_SYMBOL(target_print_req);
 393
 394 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 395 {
 396         struct ptlrpc_service      *svc = s->private;
 397         struct ptlrpc_srh_iterator *srhi = iter;
 398         struct ptlrpc_request      *req;
 399         int                         rc;
 400
 401         spin_lock(&svc->srv_lock);
 402
 403         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 404
 405         if (rc == 0) {
 406                 req = srhi->srhi_req;
 407
 408                 /* Print common req fields.
 409                  * CAVEAT EMPTOR: we're racing with the service handler
 410                  * here.  The request could contain any old crap, so you
 411                  * must be just as careful as the service's request
 412                  * parser. Currently I only print stuff here I know is OK
 413                  * to look at coz it was set up in request_in_callback()!!! */
 414                 seq_printf(s, LPD64":%s:%s:x"LPD64":%d:%s:%ld:%lds(%+lds) ",
 415                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 416                            libcfs_id2str(req->rq_peer), req->rq_xid,
 417                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 418                            req->rq_arrival_time.tv_sec,
 419                            req->rq_sent - req->rq_arrival_time.tv_sec,
 420                            req->rq_sent - req->rq_deadline);
 421                 if (svc->srv_request_history_print_fn == NULL)
 422                         seq_printf(s, "\n");
 423                 else
 424                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 425         }
 426
 427         spin_unlock(&svc->srv_lock);
 428
 429         return rc;
 430 }
 431
 432 static int
 433 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 434 {
 435         static struct seq_operations sops = {
 436                 .start = ptlrpc_lprocfs_svc_req_history_start,
 437                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 438                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 439                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 440         };
 441         struct proc_dir_entry *dp = PDE(inode);
 442         struct seq_file       *seqf;
 443         int                    rc;
 444
 445         LPROCFS_ENTRY_AND_CHECK(dp);
 446         rc = seq_open(file, &sops);
 447         if (rc) {
 448                 LPROCFS_EXIT();
 449                 return rc;
 450         }
 451
 452         seqf = file->private_data;
 453         seqf->private = dp->data;
 454         return 0;
 455 }
 456
 457 /* See also lprocfs_rd_timeouts */
 458 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 459                                       int count, int *eof, void *data)
 460 {
 461         struct ptlrpc_service *svc = data;
 462         unsigned int cur, worst;
 463         time_t worstt;
 464         struct dhms ts;
 465         int rc = 0;
 466
 467         *eof = 1;
 468         cur = at_get(&svc->srv_at_estimate);
 469         worst = svc->srv_at_estimate.at_worst_ever;
 470         worstt = svc->srv_at_estimate.at_worst_time;
 471         s2dhms(&ts, cfs_time_current_sec() - worstt);
 472         if (AT_OFF)
 473                 rc += snprintf(page + rc, count - rc,
 474                               "adaptive timeouts off, using obd_timeout %u\n",
 475                               obd_timeout);
 476         rc += snprintf(page + rc, count - rc,
 477                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 478                        "service", cur, worst, worstt,
 479                        DHMS_VARS(&ts));
 480         rc = lprocfs_at_hist_helper(page, count, rc,
 481                                     &svc->srv_at_estimate);
 482         return rc;
 483 }
 484
 485 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 486                                      struct ptlrpc_service *svc)
 487 {
 488         struct lprocfs_vars lproc_vars[] = {
 489                 {.name       = "req_buffer_history_len",
 490                  .write_fptr = NULL,
 491                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 492                  .data       = svc},
 493                 {.name       = "req_buffer_history_max",
 494                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 495                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 496                  .data       = svc},
 497                 {.name       = "timeouts",
 498                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 499                  .data       = svc},
 500                 {NULL}
 501         };
 502         static struct file_operations req_history_fops = {
 503                 .owner       = THIS_MODULE,
 504                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 505                 .read        = seq_read,
 506                 .llseek      = seq_lseek,
 507                 .release     = lprocfs_seq_release,
 508         };
 509
 510         int rc;
 511
 512         ptlrpc_lprocfs_register(entry, svc->srv_name,
 513                                 "stats", &svc->srv_procroot,
 514                                 &svc->srv_stats);
 515
 516         if (svc->srv_procroot == NULL)
 517                 return;
 518
 519         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 520
 521         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
 522                                 0400, &req_history_fops, svc);
 523         if (rc)
 524                 CWARN("Error adding the req_history file\n");
 525 }
 526
 527 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 528 {
 529         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 530                                 &obddev->obd_svc_procroot,
 531                                 &obddev->obd_svc_stats);
 532 }
 533 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 534
 535 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req)
 536 {
 537         struct lprocfs_stats *svc_stats;
 538         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 539         int opc = opcode_offset(op);
 540
 541         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 542         if (svc_stats == NULL || opc <= 0)
 543                 return;
 544         LASSERT(opc < LUSTRE_MAX_OPCODES);
 545         /* These two use the ptlrpc_lprocfs_brw below */
 546         if (!(opc == OST_WRITE || opc == OST_READ || op == LDLM_ENQUEUE
 547               || op == MDS_REINT))
 548                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, 0);
 549 }
 550
 551 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int opc, int bytes)
 552 {
 553         struct lprocfs_stats *svc_stats;
 554         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 555         if (!svc_stats)
 556                 return;
 557         lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, bytes);
 558 }
 559 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 560
 561 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 562 {
 563         if (svc->srv_procroot != NULL)
 564                 lprocfs_remove(&svc->srv_procroot);
 565
 566         if (svc->srv_stats)
 567                 lprocfs_free_stats(&svc->srv_stats);
 568 }
 569
 570 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 571 {
 572         if (obd->obd_svc_procroot)
 573                 lprocfs_remove(&obd->obd_svc_procroot);
 574
 575         if (obd->obd_svc_stats)
 576                 lprocfs_free_stats(&obd->obd_svc_stats);
 577 }
 578 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 579
 580
 581 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 582                             unsigned long count, void *data)
 583 {
 584         struct obd_device *obd = data;
 585         char tmpbuf[sizeof(struct obd_uuid)];
 586
 587         /* Kludge code(deadlock situation): the lprocfs lock has been held
 588          * since the client is evicted by writting client's
 589          * uuid/nid to procfs "evict_client" entry. However,
 590          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 591          * the proc entries under the being destroyed export{}, so I have
 592          * to drop the lock at first here.
 593          * - jay, jxiong@clusterfs.com */
 594         class_incref(obd);
 595         LPROCFS_EXIT();
 596
 597         sscanf(buffer, "%40s", tmpbuf);
 598         if (strncmp(tmpbuf, "nid:", 4) == 0)
 599                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 600         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 601                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 602         else
 603                 obd_export_evict_by_uuid(obd, tmpbuf);
 604
 605         LPROCFS_ENTRY();
 606         class_decref(obd);
 607
 608         return count;
 609 }
 610 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 611
 612 int lprocfs_wr_ping(struct file *file, const char *buffer,
 613                     unsigned long count, void *data)
 614 {
 615         struct obd_device     *obd = data;
 616         struct ptlrpc_request *req;
 617         int                    rc;
 618         ENTRY;
 619
 620         LPROCFS_CLIMP_CHECK(obd);
 621         req = ptlrpc_request_alloc_pack(obd->u.cli.cl_import, &RQF_OBD_PING,
 622                                         LUSTRE_OBD_VERSION, OBD_PING);
 623
 624         LPROCFS_CLIMP_EXIT(obd);
 625         if (req == NULL)
 626                 RETURN(-ENOMEM);
 627
 628         ptlrpc_request_set_replen(req);
 629         req->rq_send_state = LUSTRE_IMP_FULL;
 630         req->rq_no_resend = 1;
 631         req->rq_no_delay = 1;
 632
 633         rc = ptlrpc_queue_wait(req);
 634
 635         ptlrpc_req_finished(req);
 636         if (rc >= 0)
 637                 RETURN(count);
 638         RETURN(rc);
 639 }
 640 EXPORT_SYMBOL(lprocfs_wr_ping);
 641
 642 #endif /* LPROCFS */