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         { MDS_WRITEPAGE,    "mds_writepage" },
  95         { MDS_IS_SUBDIR,    "mds_is_subdir" },
  96         { LDLM_ENQUEUE,     "ldlm_enqueue" },
  97         { LDLM_CONVERT,     "ldlm_convert" },
  98         { LDLM_CANCEL,      "ldlm_cancel" },
  99         { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
 100         { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
 101         { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
 102         { MGS_CONNECT,      "mgs_connect" },
 103         { MGS_DISCONNECT,   "mgs_disconnect" },
 104         { MGS_EXCEPTION,    "mgs_exception" },
 105         { MGS_TARGET_REG,   "mgs_target_reg" },
 106         { MGS_TARGET_DEL,   "mgs_target_del" },
 107         { MGS_SET_INFO,     "mgs_set_info" },
 108         { OBD_PING,         "obd_ping" },
 109         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
 110         { OBD_QC_CALLBACK,  "obd_quota_callback" },
 111         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
 112         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
 113         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
 114         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
 115         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
 116         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
 117         { LLOG_CATINFO,                  "llog_catinfo" },
 118         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
 119         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
 120         { QUOTA_DQACQ,      "quota_acquire" },
 121         { QUOTA_DQREL,      "quota_release" },
 122         { SEQ_QUERY,        "seq_query" },
 123         { SEC_CTX_INIT,     "sec_ctx_init" },
 124         { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
 125         { SEC_CTX_FINI,     "sec_ctx_fini" },
 126         { FLD_QUERY,        "fld_query" }
 127 };
 128
 129 struct ll_eopcode {
 130      __u32       opcode;
 131      const char *opname;
 132 } ll_eopcode_table[EXTRA_LAST_OPC] = {
 133         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
 134         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
 135         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
 136         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
 137         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
 138         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
 139         { MDS_REINT_CREATE,     "mds_reint_create" },
 140         { MDS_REINT_LINK,       "mds_reint_link" },
 141         { MDS_REINT_UNLINK,     "mds_reint_unlink" },
 142         { MDS_REINT_RENAME,     "mds_reint_rename" },
 143         { MDS_REINT_OPEN,       "mds_reint_open" },
 144         { MDS_REINT_SETXATTR,   "mds_reint_setxattr" },
 145         { BRW_READ_BYTES,       "read_bytes" },
 146         { BRW_WRITE_BYTES,      "write_bytes" },
 147 };
 148
 149 const char *ll_opcode2str(__u32 opcode)
 150 {
 151         /* When one of the assertions below fail, chances are that:
 152          *     1) A new opcode was added in include/lustre/lustre_idl.h,
 153          *        but is missing from the table above.
 154          * or  2) The opcode space was renumbered or rearranged,
 155          *        and the opcode_offset() function in
 156          *        ptlrpc_internal.h needs to be modified.
 157          */
 158         __u32 offset = opcode_offset(opcode);
 159         LASSERTF(offset < LUSTRE_MAX_OPCODES,
 160                  "offset %u >= LUSTRE_MAX_OPCODES %u\n",
 161                  offset, LUSTRE_MAX_OPCODES);
 162         LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
 163                  "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
 164                  offset, ll_rpc_opcode_table[offset].opcode, opcode);
 165         return ll_rpc_opcode_table[offset].opname;
 166 }
 167
 168 const char* ll_eopcode2str(__u32 opcode)
 169 {
 170         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
 171         return ll_eopcode_table[opcode].opname;
 172 }
 173 #ifdef LPROCFS
 174 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
 175                              char *name, struct proc_dir_entry **procroot_ret,
 176                              struct lprocfs_stats **stats_ret)
 177 {
 178         struct proc_dir_entry *svc_procroot;
 179         struct lprocfs_stats *svc_stats;
 180         int i, rc;
 181         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
 182                                           LPROCFS_CNTR_STDDEV;
 183
 184         LASSERT(*procroot_ret == NULL);
 185         LASSERT(*stats_ret == NULL);
 186
 187         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,0);
 188         if (svc_stats == NULL)
 189                 return;
 190
 191         if (dir) {
 192                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
 193                 if (IS_ERR(svc_procroot)) {
 194                         lprocfs_free_stats(&svc_stats);
 195                         return;
 196                 }
 197         } else {
 198                 svc_procroot = root;
 199         }
 200
 201         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
 202                              svc_counter_config, "req_waittime", "usec");
 203         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
 204                              svc_counter_config, "req_qdepth", "reqs");
 205         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
 206                              svc_counter_config, "req_active", "reqs");
 207         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
 208                              svc_counter_config, "req_timeout", "sec");
 209         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
 210                              svc_counter_config, "reqbuf_avail", "bufs");
 211         for (i = 0; i < EXTRA_LAST_OPC; i++) {
 212                 char *units;
 213
 214                 switch(i) {
 215                 case BRW_WRITE_BYTES:
 216                 case BRW_READ_BYTES:
 217                         units = "bytes";
 218                         break;
 219                 default:
 220                         units = "reqs";
 221                         break;
 222                 }
 223                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
 224                                      svc_counter_config,
 225                                      ll_eopcode2str(i), units);
 226         }
 227         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
 228                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
 229                 lprocfs_counter_init(svc_stats,
 230                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
 231                                      ll_opcode2str(opcode), "usec");
 232         }
 233
 234         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
 235         if (rc < 0) {
 236                 if (dir)
 237                         lprocfs_remove(&svc_procroot);
 238                 lprocfs_free_stats(&svc_stats);
 239         } else {
 240                 if (dir)
 241                         *procroot_ret = svc_procroot;
 242                 *stats_ret = svc_stats;
 243         }
 244 }
 245
 246 static int
 247 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
 248                                     int count, int *eof, void *data)
 249 {
 250         struct ptlrpc_service *svc = data;
 251
 252         *eof = 1;
 253         return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds);
 254 }
 255
 256 static int
 257 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
 258                                     int count, int *eof, void *data)
 259 {
 260         struct ptlrpc_service *svc = data;
 261
 262         *eof = 1;
 263         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
 264 }
 265
 266 static int
 267 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
 268                                      unsigned long count, void *data)
 269 {
 270         struct ptlrpc_service *svc = data;
 271         int                    bufpages;
 272         int                    val;
 273         int                    rc = lprocfs_write_helper(buffer, count, &val);
 274
 275         if (rc < 0)
 276                 return rc;
 277
 278         if (val < 0)
 279                 return -ERANGE;
 280
 281         /* This sanity check is more of an insanity check; we can still
 282          * hose a kernel by allowing the request history to grow too
 283          * far. */
 284         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
 285         if (val > num_physpages/(2 * bufpages))
 286                 return -ERANGE;
 287
 288         spin_lock(&svc->srv_lock);
 289         svc->srv_max_history_rqbds = val;
 290         spin_unlock(&svc->srv_lock);
 291
 292         return count;
 293 }
 294
 295 struct ptlrpc_srh_iterator {
 296         __u64                  srhi_seq;
 297         struct ptlrpc_request *srhi_req;
 298 };
 299
 300 int
 301 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 302                                     struct ptlrpc_srh_iterator *srhi,
 303                                     __u64 seq)
 304 {
 305         struct list_head      *e;
 306         struct ptlrpc_request *req;
 307
 308         if (srhi->srhi_req != NULL &&
 309             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 310             srhi->srhi_seq <= seq) {
 311                 /* If srhi_req was set previously, hasn't been culled and
 312                  * we're searching for a seq on or after it (i.e. more
 313                  * recent), search from it onwards.
 314                  * Since the service history is LRU (i.e. culled reqs will
 315                  * be near the head), we shouldn't have to do long
 316                  * re-scans */
 317                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 318                 LASSERT (!list_empty(&svc->srv_request_history));
 319                 e = &srhi->srhi_req->rq_history_list;
 320         } else {
 321                 /* search from start */
 322                 e = svc->srv_request_history.next;
 323         }
 324
 325         while (e != &svc->srv_request_history) {
 326                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 327
 328                 if (req->rq_history_seq >= seq) {
 329                         srhi->srhi_seq = req->rq_history_seq;
 330                         srhi->srhi_req = req;
 331                         return 0;
 332                 }
 333                 e = e->next;
 334         }
 335
 336         return -ENOENT;
 337 }
 338
 339 static void *
 340 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 341 {
 342         struct ptlrpc_service       *svc = s->private;
 343         struct ptlrpc_srh_iterator  *srhi;
 344         int                          rc;
 345
 346         OBD_ALLOC(srhi, sizeof(*srhi));
 347         if (srhi == NULL)
 348                 return NULL;
 349
 350         srhi->srhi_seq = 0;
 351         srhi->srhi_req = NULL;
 352
 353         spin_lock(&svc->srv_lock);
 354         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 355         spin_unlock(&svc->srv_lock);
 356
 357         if (rc == 0) {
 358                 *pos = srhi->srhi_seq;
 359                 return srhi;
 360         }
 361
 362         OBD_FREE(srhi, sizeof(*srhi));
 363         return NULL;
 364 }
 365
 366 static void
 367 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 368 {
 369         struct ptlrpc_srh_iterator *srhi = iter;
 370
 371         if (srhi != NULL)
 372                 OBD_FREE(srhi, sizeof(*srhi));
 373 }
 374
 375 static void *
 376 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 377                                     void *iter, loff_t *pos)
 378 {
 379         struct ptlrpc_service       *svc = s->private;
 380         struct ptlrpc_srh_iterator  *srhi = iter;
 381         int                          rc;
 382
 383         spin_lock(&svc->srv_lock);
 384         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 385         spin_unlock(&svc->srv_lock);
 386
 387         if (rc != 0) {
 388                 OBD_FREE(srhi, sizeof(*srhi));
 389                 return NULL;
 390         }
 391
 392         *pos = srhi->srhi_seq;
 393         return srhi;
 394 }
 395
 396 /* common ost/mdt srv_request_history_print_fn */
 397 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 398 {
 399         /* Called holding srv_lock with irqs disabled.
 400          * Print specific req contents and a newline.
 401          * CAVEAT EMPTOR: check request message length before printing!!!
 402          * You might have received any old crap so you must be just as
 403          * careful here as the service's request parser!!! */
 404         struct seq_file *sf = seq_file;
 405
 406         switch (req->rq_phase) {
 407         case RQ_PHASE_NEW:
 408                 /* still awaiting a service thread's attention, or rejected
 409                  * because the generic request message didn't unpack */
 410                 seq_printf(sf, "<not swabbed>\n");
 411                 break;
 412         case RQ_PHASE_INTERPRET:
 413                 /* being handled, so basic msg swabbed, and opc is valid
 414                  * but racing with mds_handle() */
 415         case RQ_PHASE_COMPLETE:
 416                 /* been handled by mds_handle() reply state possibly still
 417                  * volatile */
 418                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 419                 break;
 420         default:
 421                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 422         }
 423 }
 424 EXPORT_SYMBOL(target_print_req);
 425
 426 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 427 {
 428         struct ptlrpc_service      *svc = s->private;
 429         struct ptlrpc_srh_iterator *srhi = iter;
 430         struct ptlrpc_request      *req;
 431         int                         rc;
 432
 433         spin_lock(&svc->srv_lock);
 434
 435         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 436
 437         if (rc == 0) {
 438                 req = srhi->srhi_req;
 439
 440                 /* Print common req fields.
 441                  * CAVEAT EMPTOR: we're racing with the service handler
 442                  * here.  The request could contain any old crap, so you
 443                  * must be just as careful as the service's request
 444                  * parser. Currently I only print stuff here I know is OK
 445                  * to look at coz it was set up in request_in_callback()!!! */
 446                 seq_printf(s, LPD64":%s:%s:x"LPD64":%d:%s:%ld:%lds(%+lds) ",
 447                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 448                            libcfs_id2str(req->rq_peer), req->rq_xid,
 449                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 450                            req->rq_arrival_time.tv_sec,
 451                            req->rq_sent - req->rq_arrival_time.tv_sec,
 452                            req->rq_sent - req->rq_deadline);
 453                 if (svc->srv_request_history_print_fn == NULL)
 454                         seq_printf(s, "\n");
 455                 else
 456                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 457         }
 458
 459         spin_unlock(&svc->srv_lock);
 460
 461         return rc;
 462 }
 463
 464 static int
 465 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 466 {
 467         static struct seq_operations sops = {
 468                 .start = ptlrpc_lprocfs_svc_req_history_start,
 469                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 470                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 471                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 472         };
 473         struct proc_dir_entry *dp = PDE(inode);
 474         struct seq_file       *seqf;
 475         int                    rc;
 476
 477         LPROCFS_ENTRY_AND_CHECK(dp);
 478         rc = seq_open(file, &sops);
 479         if (rc) {
 480                 LPROCFS_EXIT();
 481                 return rc;
 482         }
 483
 484         seqf = file->private_data;
 485         seqf->private = dp->data;
 486         return 0;
 487 }
 488
 489 /* See also lprocfs_rd_timeouts */
 490 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 491                                       int count, int *eof, void *data)
 492 {
 493         struct ptlrpc_service *svc = data;
 494         unsigned int cur, worst;
 495         time_t worstt;
 496         struct dhms ts;
 497         int rc = 0;
 498
 499         *eof = 1;
 500         cur = at_get(&svc->srv_at_estimate);
 501         worst = svc->srv_at_estimate.at_worst_ever;
 502         worstt = svc->srv_at_estimate.at_worst_time;
 503         s2dhms(&ts, cfs_time_current_sec() - worstt);
 504         if (AT_OFF)
 505                 rc += snprintf(page + rc, count - rc,
 506                               "adaptive timeouts off, using obd_timeout %u\n",
 507                               obd_timeout);
 508         rc += snprintf(page + rc, count - rc,
 509                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 510                        "service", cur, worst, worstt,
 511                        DHMS_VARS(&ts));
 512         rc = lprocfs_at_hist_helper(page, count, rc,
 513                                     &svc->srv_at_estimate);
 514         return rc;
 515 }
 516
 517 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
 518                                       int count, int *eof, void *data)
 519 {
 520         struct ptlrpc_service *svc = data;
 521         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
 522         return rc;
 523 }
 524
 525 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
 526                                       unsigned long count, void *data)
 527 {
 528         struct ptlrpc_service *svc = data;
 529         int rc, val;
 530
 531         rc = lprocfs_write_helper(buffer, count, &val);
 532         if (rc < 0)
 533                 return rc;
 534         if (val < 0)
 535                 return -ERANGE;
 536
 537         spin_lock(&svc->srv_lock);
 538         svc->srv_hpreq_ratio = val;
 539         spin_unlock(&svc->srv_lock);
 540         return count;
 541 }
 542
 543 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 544                                      struct ptlrpc_service *svc)
 545 {
 546         struct lprocfs_vars lproc_vars[] = {
 547                 {.name       = "req_buffer_history_len",
 548                  .write_fptr = NULL,
 549                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 550                  .data       = svc},
 551                 {.name       = "req_buffer_history_max",
 552                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 553                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 554                  .data       = svc},
 555                 {.name       = "timeouts",
 556                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 557                  .data       = svc},
 558                 {.name       = "high_priority_ratio",
 559                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
 560                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
 561                  .data       = svc},
 562                 {NULL}
 563         };
 564         static struct file_operations req_history_fops = {
 565                 .owner       = THIS_MODULE,
 566                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 567                 .read        = seq_read,
 568                 .llseek      = seq_lseek,
 569                 .release     = lprocfs_seq_release,
 570         };
 571
 572         int rc;
 573
 574         ptlrpc_lprocfs_register(entry, svc->srv_name,
 575                                 "stats", &svc->srv_procroot,
 576                                 &svc->srv_stats);
 577
 578         if (svc->srv_procroot == NULL)
 579                 return;
 580
 581         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 582
 583         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
 584                                 0400, &req_history_fops, svc);
 585         if (rc)
 586                 CWARN("Error adding the req_history file\n");
 587 }
 588
 589 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 590 {
 591         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 592                                 &obddev->obd_svc_procroot,
 593                                 &obddev->obd_svc_stats);
 594 }
 595 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 596
 597 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req)
 598 {
 599         struct lprocfs_stats *svc_stats;
 600         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 601         int opc = opcode_offset(op);
 602
 603         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 604         if (svc_stats == NULL || opc <= 0)
 605                 return;
 606         LASSERT(opc < LUSTRE_MAX_OPCODES);
 607         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
 608                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, 0);
 609 }
 610
 611 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
 612 {
 613         struct lprocfs_stats *svc_stats;
 614         int idx;
 615
 616         if (!req->rq_import)
 617                 return;
 618         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 619         if (!svc_stats)
 620                 return;
 621         idx = lustre_msg_get_opc(req->rq_reqmsg);
 622         switch (idx) {
 623         case OST_READ:
 624                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
 625                 break;
 626         case OST_WRITE:
 627                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
 628                 break;
 629         default:
 630                 LASSERTF(0, "unsupported opcode %u\n", idx);
 631                 break;
 632         }
 633
 634         lprocfs_counter_add(svc_stats, idx, bytes);
 635 }
 636
 637 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 638
 639 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 640 {
 641         if (svc->srv_procroot != NULL)
 642                 lprocfs_remove(&svc->srv_procroot);
 643
 644         if (svc->srv_stats)
 645                 lprocfs_free_stats(&svc->srv_stats);
 646 }
 647
 648 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 649 {
 650         if (obd->obd_svc_procroot)
 651                 lprocfs_remove(&obd->obd_svc_procroot);
 652
 653         if (obd->obd_svc_stats)
 654                 lprocfs_free_stats(&obd->obd_svc_stats);
 655 }
 656 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 657
 658
 659 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 660                             unsigned long count, void *data)
 661 {
 662         struct obd_device *obd = data;
 663         char tmpbuf[sizeof(struct obd_uuid)];
 664
 665         /* Kludge code(deadlock situation): the lprocfs lock has been held
 666          * since the client is evicted by writting client's
 667          * uuid/nid to procfs "evict_client" entry. However,
 668          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 669          * the proc entries under the being destroyed export{}, so I have
 670          * to drop the lock at first here.
 671          * - jay, jxiong@clusterfs.com */
 672         class_incref(obd, __FUNCTION__, cfs_current());
 673         LPROCFS_EXIT();
 674
 675         sscanf(buffer, "%40s", tmpbuf);
 676         if (strncmp(tmpbuf, "nid:", 4) == 0)
 677                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 678         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 679                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 680         else
 681                 obd_export_evict_by_uuid(obd, tmpbuf);
 682
 683         LPROCFS_ENTRY();
 684         class_decref(obd, __FUNCTION__, cfs_current());
 685
 686         return count;
 687 }
 688 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 689
 690 int lprocfs_wr_ping(struct file *file, const char *buffer,
 691                     unsigned long count, void *data)
 692 {
 693         struct obd_device     *obd = data;
 694         struct ptlrpc_request *req;
 695         int                    rc;
 696         ENTRY;
 697
 698         LPROCFS_CLIMP_CHECK(obd);
 699         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
 700         LPROCFS_CLIMP_EXIT(obd);
 701         if (req == NULL)
 702                 RETURN(-ENOMEM);
 703
 704         req->rq_send_state = LUSTRE_IMP_FULL;
 705
 706         rc = ptlrpc_queue_wait(req);
 707
 708         ptlrpc_req_finished(req);
 709         if (rc >= 0)
 710                 RETURN(count);
 711         RETURN(rc);
 712 }
 713 EXPORT_SYMBOL(lprocfs_wr_ping);
 714
 715 #endif /* LPROCFS */