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         { MDS_GET_INFO,     "mds_get_info" },
  97         { LDLM_ENQUEUE,     "ldlm_enqueue" },
  98         { LDLM_CONVERT,     "ldlm_convert" },
  99         { LDLM_CANCEL,      "ldlm_cancel" },
 100         { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
 101         { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
 102         { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
 103         { LDLM_SET_INFO,    "ldlm_set_info" },
 104         { MGS_CONNECT,      "mgs_connect" },
 105         { MGS_DISCONNECT,   "mgs_disconnect" },
 106         { MGS_EXCEPTION,    "mgs_exception" },
 107         { MGS_TARGET_REG,   "mgs_target_reg" },
 108         { MGS_TARGET_DEL,   "mgs_target_del" },
 109         { MGS_SET_INFO,     "mgs_set_info" },
 110         { OBD_PING,         "obd_ping" },
 111         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
 112         { OBD_QC_CALLBACK,  "obd_quota_callback" },
 113         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
 114         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
 115         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
 116         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
 117         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
 118         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
 119         { LLOG_CATINFO,                  "llog_catinfo" },
 120         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
 121         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
 122         { QUOTA_DQACQ,      "quota_acquire" },
 123         { QUOTA_DQREL,      "quota_release" },
 124         { SEQ_QUERY,        "seq_query" },
 125         { SEC_CTX_INIT,     "sec_ctx_init" },
 126         { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
 127         { SEC_CTX_FINI,     "sec_ctx_fini" },
 128         { FLD_QUERY,        "fld_query" }
 129 };
 130
 131 struct ll_eopcode {
 132      __u32       opcode;
 133      const char *opname;
 134 } ll_eopcode_table[EXTRA_LAST_OPC] = {
 135         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
 136         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
 137         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
 138         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
 139         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
 140         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
 141         { MDS_REINT_CREATE,     "mds_reint_create" },
 142         { MDS_REINT_LINK,       "mds_reint_link" },
 143         { MDS_REINT_UNLINK,     "mds_reint_unlink" },
 144         { MDS_REINT_RENAME,     "mds_reint_rename" },
 145         { MDS_REINT_OPEN,       "mds_reint_open" },
 146         { MDS_REINT_SETXATTR,   "mds_reint_setxattr" },
 147         { BRW_READ_BYTES,       "read_bytes" },
 148         { BRW_WRITE_BYTES,      "write_bytes" },
 149 };
 150
 151 const char *ll_opcode2str(__u32 opcode)
 152 {
 153         /* When one of the assertions below fail, chances are that:
 154          *     1) A new opcode was added in include/lustre/lustre_idl.h,
 155          *        but is missing from the table above.
 156          * or  2) The opcode space was renumbered or rearranged,
 157          *        and the opcode_offset() function in
 158          *        ptlrpc_internal.h needs to be modified.
 159          */
 160         __u32 offset = opcode_offset(opcode);
 161         LASSERTF(offset < LUSTRE_MAX_OPCODES,
 162                  "offset %u >= LUSTRE_MAX_OPCODES %u\n",
 163                  offset, LUSTRE_MAX_OPCODES);
 164         LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
 165                  "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
 166                  offset, ll_rpc_opcode_table[offset].opcode, opcode);
 167         return ll_rpc_opcode_table[offset].opname;
 168 }
 169
 170 const char* ll_eopcode2str(__u32 opcode)
 171 {
 172         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
 173         return ll_eopcode_table[opcode].opname;
 174 }
 175 #ifdef LPROCFS
 176 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
 177                              char *name, struct proc_dir_entry **procroot_ret,
 178                              struct lprocfs_stats **stats_ret)
 179 {
 180         struct proc_dir_entry *svc_procroot;
 181         struct lprocfs_stats *svc_stats;
 182         int i, rc;
 183         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
 184                                           LPROCFS_CNTR_STDDEV;
 185
 186         LASSERT(*procroot_ret == NULL);
 187         LASSERT(*stats_ret == NULL);
 188
 189         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,0);
 190         if (svc_stats == NULL)
 191                 return;
 192
 193         if (dir) {
 194                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
 195                 if (IS_ERR(svc_procroot)) {
 196                         lprocfs_free_stats(&svc_stats);
 197                         return;
 198                 }
 199         } else {
 200                 svc_procroot = root;
 201         }
 202
 203         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
 204                              svc_counter_config, "req_waittime", "usec");
 205         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
 206                              svc_counter_config, "req_qdepth", "reqs");
 207         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
 208                              svc_counter_config, "req_active", "reqs");
 209         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
 210                              svc_counter_config, "req_timeout", "sec");
 211         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
 212                              svc_counter_config, "reqbuf_avail", "bufs");
 213         for (i = 0; i < EXTRA_LAST_OPC; i++) {
 214                 char *units;
 215
 216                 switch(i) {
 217                 case BRW_WRITE_BYTES:
 218                 case BRW_READ_BYTES:
 219                         units = "bytes";
 220                         break;
 221                 default:
 222                         units = "reqs";
 223                         break;
 224                 }
 225                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
 226                                      svc_counter_config,
 227                                      ll_eopcode2str(i), units);
 228         }
 229         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
 230                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
 231                 lprocfs_counter_init(svc_stats,
 232                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
 233                                      ll_opcode2str(opcode), "usec");
 234         }
 235
 236         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
 237         if (rc < 0) {
 238                 if (dir)
 239                         lprocfs_remove(&svc_procroot);
 240                 lprocfs_free_stats(&svc_stats);
 241         } else {
 242                 if (dir)
 243                         *procroot_ret = svc_procroot;
 244                 *stats_ret = svc_stats;
 245         }
 246 }
 247
 248 static int
 249 ptlrpc_lprocfs_read_req_history_len(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_n_history_rqbds);
 256 }
 257
 258 static int
 259 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
 260                                     int count, int *eof, void *data)
 261 {
 262         struct ptlrpc_service *svc = data;
 263
 264         *eof = 1;
 265         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
 266 }
 267
 268 static int
 269 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
 270                                      unsigned long count, void *data)
 271 {
 272         struct ptlrpc_service *svc = data;
 273         int                    bufpages;
 274         int                    val;
 275         int                    rc = lprocfs_write_helper(buffer, count, &val);
 276
 277         if (rc < 0)
 278                 return rc;
 279
 280         if (val < 0)
 281                 return -ERANGE;
 282
 283         /* This sanity check is more of an insanity check; we can still
 284          * hose a kernel by allowing the request history to grow too
 285          * far. */
 286         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
 287         if (val > num_physpages/(2 * bufpages))
 288                 return -ERANGE;
 289
 290         spin_lock(&svc->srv_lock);
 291         svc->srv_max_history_rqbds = val;
 292         spin_unlock(&svc->srv_lock);
 293
 294         return count;
 295 }
 296
 297 static int
 298 ptlrpc_lprocfs_rd_threads_min(char *page, char **start, off_t off,
 299                               int count, int *eof, void *data)
 300 {
 301         struct ptlrpc_service *svc = data;
 302
 303         return snprintf(page, count, "%d\n", svc->srv_threads_min);
 304 }
 305
 306 static int
 307 ptlrpc_lprocfs_wr_threads_min(struct file *file, const char *buffer,
 308                               unsigned long count, void *data)
 309 {
 310         struct ptlrpc_service *svc = data;
 311         int                    val;
 312         int                    rc = lprocfs_write_helper(buffer, count, &val);
 313
 314         if (rc < 0)
 315                 return rc;
 316
 317         if (val < 2)
 318                 return -ERANGE;
 319
 320         if (val > svc->srv_threads_max)
 321                 return -ERANGE;
 322
 323         spin_lock(&svc->srv_lock);
 324         svc->srv_threads_min = val;
 325         spin_unlock(&svc->srv_lock);
 326
 327         return count;
 328 }
 329
 330 static int
 331 ptlrpc_lprocfs_rd_threads_started(char *page, char **start, off_t off,
 332                                   int count, int *eof, void *data)
 333 {
 334         struct ptlrpc_service *svc = data;
 335
 336         return snprintf(page, count, "%d\n", svc->srv_threads_started);
 337 }
 338
 339 static int
 340 ptlrpc_lprocfs_rd_threads_max(char *page, char **start, off_t off,
 341                               int count, int *eof, void *data)
 342 {
 343         struct ptlrpc_service *svc = data;
 344
 345         return snprintf(page, count, "%d\n", svc->srv_threads_max);
 346 }
 347
 348 static int
 349 ptlrpc_lprocfs_wr_threads_max(struct file *file, const char *buffer,
 350                               unsigned long count, void *data)
 351 {
 352         struct ptlrpc_service *svc = data;
 353         int                    val;
 354         int                    rc = lprocfs_write_helper(buffer, count, &val);
 355
 356         if (rc < 0)
 357                 return rc;
 358
 359         if (val < 2)
 360                 return -ERANGE;
 361
 362         if (val < svc->srv_threads_min)
 363                 return -ERANGE;
 364
 365         spin_lock(&svc->srv_lock);
 366         svc->srv_threads_max = val;
 367         spin_unlock(&svc->srv_lock);
 368
 369         return count;
 370 }
 371
 372 struct ptlrpc_srh_iterator {
 373         __u64                  srhi_seq;
 374         struct ptlrpc_request *srhi_req;
 375 };
 376
 377 int
 378 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 379                                     struct ptlrpc_srh_iterator *srhi,
 380                                     __u64 seq)
 381 {
 382         struct list_head      *e;
 383         struct ptlrpc_request *req;
 384
 385         if (srhi->srhi_req != NULL &&
 386             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 387             srhi->srhi_seq <= seq) {
 388                 /* If srhi_req was set previously, hasn't been culled and
 389                  * we're searching for a seq on or after it (i.e. more
 390                  * recent), search from it onwards.
 391                  * Since the service history is LRU (i.e. culled reqs will
 392                  * be near the head), we shouldn't have to do long
 393                  * re-scans */
 394                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 395                 LASSERT (!list_empty(&svc->srv_request_history));
 396                 e = &srhi->srhi_req->rq_history_list;
 397         } else {
 398                 /* search from start */
 399                 e = svc->srv_request_history.next;
 400         }
 401
 402         while (e != &svc->srv_request_history) {
 403                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 404
 405                 if (req->rq_history_seq >= seq) {
 406                         srhi->srhi_seq = req->rq_history_seq;
 407                         srhi->srhi_req = req;
 408                         return 0;
 409                 }
 410                 e = e->next;
 411         }
 412
 413         return -ENOENT;
 414 }
 415
 416 static void *
 417 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 418 {
 419         struct ptlrpc_service       *svc = s->private;
 420         struct ptlrpc_srh_iterator  *srhi;
 421         int                          rc;
 422
 423         OBD_ALLOC(srhi, sizeof(*srhi));
 424         if (srhi == NULL)
 425                 return NULL;
 426
 427         srhi->srhi_seq = 0;
 428         srhi->srhi_req = NULL;
 429
 430         spin_lock(&svc->srv_lock);
 431         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 432         spin_unlock(&svc->srv_lock);
 433
 434         if (rc == 0) {
 435                 *pos = srhi->srhi_seq;
 436                 return srhi;
 437         }
 438
 439         OBD_FREE(srhi, sizeof(*srhi));
 440         return NULL;
 441 }
 442
 443 static void
 444 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 445 {
 446         struct ptlrpc_srh_iterator *srhi = iter;
 447
 448         if (srhi != NULL)
 449                 OBD_FREE(srhi, sizeof(*srhi));
 450 }
 451
 452 static void *
 453 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 454                                     void *iter, loff_t *pos)
 455 {
 456         struct ptlrpc_service       *svc = s->private;
 457         struct ptlrpc_srh_iterator  *srhi = iter;
 458         int                          rc;
 459
 460         spin_lock(&svc->srv_lock);
 461         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 462         spin_unlock(&svc->srv_lock);
 463
 464         if (rc != 0) {
 465                 OBD_FREE(srhi, sizeof(*srhi));
 466                 return NULL;
 467         }
 468
 469         *pos = srhi->srhi_seq;
 470         return srhi;
 471 }
 472
 473 /* common ost/mdt srv_request_history_print_fn */
 474 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 475 {
 476         /* Called holding srv_lock with irqs disabled.
 477          * Print specific req contents and a newline.
 478          * CAVEAT EMPTOR: check request message length before printing!!!
 479          * You might have received any old crap so you must be just as
 480          * careful here as the service's request parser!!! */
 481         struct seq_file *sf = seq_file;
 482
 483         switch (req->rq_phase) {
 484         case RQ_PHASE_NEW:
 485                 /* still awaiting a service thread's attention, or rejected
 486                  * because the generic request message didn't unpack */
 487                 seq_printf(sf, "<not swabbed>\n");
 488                 break;
 489         case RQ_PHASE_INTERPRET:
 490                 /* being handled, so basic msg swabbed, and opc is valid
 491                  * but racing with mds_handle() */
 492         case RQ_PHASE_COMPLETE:
 493                 /* been handled by mds_handle() reply state possibly still
 494                  * volatile */
 495                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 496                 break;
 497         default:
 498                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 499         }
 500 }
 501 EXPORT_SYMBOL(target_print_req);
 502
 503 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 504 {
 505         struct ptlrpc_service      *svc = s->private;
 506         struct ptlrpc_srh_iterator *srhi = iter;
 507         struct ptlrpc_request      *req;
 508         int                         rc;
 509
 510         spin_lock(&svc->srv_lock);
 511
 512         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 513
 514         if (rc == 0) {
 515                 req = srhi->srhi_req;
 516
 517                 /* Print common req fields.
 518                  * CAVEAT EMPTOR: we're racing with the service handler
 519                  * here.  The request could contain any old crap, so you
 520                  * must be just as careful as the service's request
 521                  * parser. Currently I only print stuff here I know is OK
 522                  * to look at coz it was set up in request_in_callback()!!! */
 523                 seq_printf(s, LPD64":%s:%s:x"LPU64":%d:%s:%ld:%lds(%+lds) ",
 524                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 525                            libcfs_id2str(req->rq_peer), req->rq_xid,
 526                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 527                            req->rq_arrival_time.tv_sec,
 528                            req->rq_sent - req->rq_arrival_time.tv_sec,
 529                            req->rq_sent - req->rq_deadline);
 530                 if (svc->srv_request_history_print_fn == NULL)
 531                         seq_printf(s, "\n");
 532                 else
 533                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 534         }
 535
 536         spin_unlock(&svc->srv_lock);
 537
 538         return rc;
 539 }
 540
 541 static int
 542 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 543 {
 544         static struct seq_operations sops = {
 545                 .start = ptlrpc_lprocfs_svc_req_history_start,
 546                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 547                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 548                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 549         };
 550         struct proc_dir_entry *dp = PDE(inode);
 551         struct seq_file       *seqf;
 552         int                    rc;
 553
 554         LPROCFS_ENTRY_AND_CHECK(dp);
 555         rc = seq_open(file, &sops);
 556         if (rc) {
 557                 LPROCFS_EXIT();
 558                 return rc;
 559         }
 560
 561         seqf = file->private_data;
 562         seqf->private = dp->data;
 563         return 0;
 564 }
 565
 566 /* See also lprocfs_rd_timeouts */
 567 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 568                                       int count, int *eof, void *data)
 569 {
 570         struct ptlrpc_service *svc = data;
 571         unsigned int cur, worst;
 572         time_t worstt;
 573         struct dhms ts;
 574         int rc = 0;
 575
 576         *eof = 1;
 577         cur = at_get(&svc->srv_at_estimate);
 578         worst = svc->srv_at_estimate.at_worst_ever;
 579         worstt = svc->srv_at_estimate.at_worst_time;
 580         s2dhms(&ts, cfs_time_current_sec() - worstt);
 581         if (AT_OFF)
 582                 rc += snprintf(page + rc, count - rc,
 583                               "adaptive timeouts off, using obd_timeout %u\n",
 584                               obd_timeout);
 585         rc += snprintf(page + rc, count - rc,
 586                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 587                        "service", cur, worst, worstt,
 588                        DHMS_VARS(&ts));
 589         rc = lprocfs_at_hist_helper(page, count, rc,
 590                                     &svc->srv_at_estimate);
 591         return rc;
 592 }
 593
 594 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
 595                                       int count, int *eof, void *data)
 596 {
 597         struct ptlrpc_service *svc = data;
 598         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
 599         return rc;
 600 }
 601
 602 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
 603                                       unsigned long count, void *data)
 604 {
 605         struct ptlrpc_service *svc = data;
 606         int rc, val;
 607
 608         rc = lprocfs_write_helper(buffer, count, &val);
 609         if (rc < 0)
 610                 return rc;
 611         if (val < 0)
 612                 return -ERANGE;
 613
 614         spin_lock(&svc->srv_lock);
 615         svc->srv_hpreq_ratio = val;
 616         spin_unlock(&svc->srv_lock);
 617         return count;
 618 }
 619
 620 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 621                                      struct ptlrpc_service *svc)
 622 {
 623         struct lprocfs_vars lproc_vars[] = {
 624                 {.name       = "high_priority_ratio",
 625                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
 626                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
 627                  .data       = svc},
 628                 {.name       = "req_buffer_history_len",
 629                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 630                  .data       = svc},
 631                 {.name       = "req_buffer_history_max",
 632                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 633                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 634                  .data       = svc},
 635                 {.name       = "threads_min",
 636                  .read_fptr  = ptlrpc_lprocfs_rd_threads_min,
 637                  .write_fptr = ptlrpc_lprocfs_wr_threads_min,
 638                  .data       = svc},
 639                 {.name       = "threads_max",
 640                  .read_fptr  = ptlrpc_lprocfs_rd_threads_max,
 641                  .write_fptr = ptlrpc_lprocfs_wr_threads_max,
 642                  .data       = svc},
 643                 {.name       = "threads_started",
 644                  .read_fptr  = ptlrpc_lprocfs_rd_threads_started,
 645                  .data       = svc},
 646                 {.name       = "timeouts",
 647                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 648                  .data       = svc},
 649                 {NULL}
 650         };
 651         static struct file_operations req_history_fops = {
 652                 .owner       = THIS_MODULE,
 653                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 654                 .read        = seq_read,
 655                 .llseek      = seq_lseek,
 656                 .release     = lprocfs_seq_release,
 657         };
 658
 659         int rc;
 660
 661         ptlrpc_lprocfs_register(entry, svc->srv_name,
 662                                 "stats", &svc->srv_procroot,
 663                                 &svc->srv_stats);
 664
 665         if (svc->srv_procroot == NULL)
 666                 return;
 667
 668         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 669
 670         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
 671                                 0400, &req_history_fops, svc);
 672         if (rc)
 673                 CWARN("Error adding the req_history file\n");
 674 }
 675
 676 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 677 {
 678         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 679                                 &obddev->obd_svc_procroot,
 680                                 &obddev->obd_svc_stats);
 681 }
 682 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 683
 684 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
 685 {
 686         struct lprocfs_stats *svc_stats;
 687         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 688         int opc = opcode_offset(op);
 689
 690         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 691         if (svc_stats == NULL || opc <= 0)
 692                 return;
 693         LASSERT(opc < LUSTRE_MAX_OPCODES);
 694         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
 695                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
 696 }
 697
 698 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
 699 {
 700         struct lprocfs_stats *svc_stats;
 701         int idx;
 702
 703         if (!req->rq_import)
 704                 return;
 705         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 706         if (!svc_stats)
 707                 return;
 708         idx = lustre_msg_get_opc(req->rq_reqmsg);
 709         switch (idx) {
 710         case OST_READ:
 711                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
 712                 break;
 713         case OST_WRITE:
 714                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
 715                 break;
 716         default:
 717                 LASSERTF(0, "unsupported opcode %u\n", idx);
 718                 break;
 719         }
 720
 721         lprocfs_counter_add(svc_stats, idx, bytes);
 722 }
 723
 724 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 725
 726 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 727 {
 728         if (svc->srv_procroot != NULL)
 729                 lprocfs_remove(&svc->srv_procroot);
 730
 731         if (svc->srv_stats)
 732                 lprocfs_free_stats(&svc->srv_stats);
 733 }
 734
 735 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 736 {
 737         if (obd->obd_svc_procroot)
 738                 lprocfs_remove(&obd->obd_svc_procroot);
 739
 740         if (obd->obd_svc_stats)
 741                 lprocfs_free_stats(&obd->obd_svc_stats);
 742 }
 743 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 744
 745
 746 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 747                             unsigned long count, void *data)
 748 {
 749         struct obd_device *obd = data;
 750         char tmpbuf[sizeof(struct obd_uuid)];
 751
 752         /* Kludge code(deadlock situation): the lprocfs lock has been held
 753          * since the client is evicted by writting client's
 754          * uuid/nid to procfs "evict_client" entry. However,
 755          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 756          * the proc entries under the being destroyed export{}, so I have
 757          * to drop the lock at first here.
 758          * - jay, jxiong@clusterfs.com */
 759         class_incref(obd, __FUNCTION__, cfs_current());
 760         LPROCFS_EXIT();
 761
 762         sscanf(buffer, "%40s", tmpbuf);
 763         if (strncmp(tmpbuf, "nid:", 4) == 0)
 764                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 765         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 766                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 767         else
 768                 obd_export_evict_by_uuid(obd, tmpbuf);
 769
 770         LPROCFS_ENTRY();
 771         class_decref(obd, __FUNCTION__, cfs_current());
 772
 773         return count;
 774 }
 775 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 776
 777 int lprocfs_wr_ping(struct file *file, const char *buffer,
 778                     unsigned long count, void *data)
 779 {
 780         struct obd_device     *obd = data;
 781         struct ptlrpc_request *req;
 782         int                    rc;
 783         ENTRY;
 784
 785         LPROCFS_CLIMP_CHECK(obd);
 786         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
 787         LPROCFS_CLIMP_EXIT(obd);
 788         if (req == NULL)
 789                 RETURN(-ENOMEM);
 790
 791         req->rq_send_state = LUSTRE_IMP_FULL;
 792
 793         rc = ptlrpc_queue_wait(req);
 794
 795         ptlrpc_req_finished(req);
 796         if (rc >= 0)
 797                 RETURN(count);
 798         RETURN(rc);
 799 }
 800 EXPORT_SYMBOL(lprocfs_wr_ping);
 801
 802 #endif /* LPROCFS */