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