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