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