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         { MGS_CONNECT,      "mgs_connect" },
 104         { MGS_DISCONNECT,   "mgs_disconnect" },
 105         { MGS_EXCEPTION,    "mgs_exception" },
 106         { MGS_TARGET_REG,   "mgs_target_reg" },
 107         { MGS_TARGET_DEL,   "mgs_target_del" },
 108         { MGS_SET_INFO,     "mgs_set_info" },
 109         { OBD_PING,         "obd_ping" },
 110         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
 111         { OBD_QC_CALLBACK,  "obd_quota_callback" },
 112         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
 113         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
 114         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
 115         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
 116         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
 117         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
 118         { LLOG_CATINFO,                  "llog_catinfo" },
 119         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
 120         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
 121         { QUOTA_DQACQ,      "quota_acquire" },
 122         { QUOTA_DQREL,      "quota_release" },
 123         { SEQ_QUERY,        "seq_query" },
 124         { SEC_CTX_INIT,     "sec_ctx_init" },
 125         { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
 126         { SEC_CTX_FINI,     "sec_ctx_fini" },
 127         { FLD_QUERY,        "fld_query" }
 128 };
 129
 130 struct ll_eopcode {
 131      __u32       opcode;
 132      const char *opname;
 133 } ll_eopcode_table[EXTRA_LAST_OPC] = {
 134         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
 135         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
 136         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
 137         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
 138         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
 139         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
 140         { MDS_REINT_CREATE,     "mds_reint_create" },
 141         { MDS_REINT_LINK,       "mds_reint_link" },
 142         { MDS_REINT_UNLINK,     "mds_reint_unlink" },
 143         { MDS_REINT_RENAME,     "mds_reint_rename" },
 144         { MDS_REINT_OPEN,       "mds_reint_open" },
 145         { MDS_REINT_SETXATTR,   "mds_reint_setxattr" },
 146         { BRW_READ_BYTES,       "read_bytes" },
 147         { BRW_WRITE_BYTES,      "write_bytes" },
 148 };
 149
 150 const char *ll_opcode2str(__u32 opcode)
 151 {
 152         /* When one of the assertions below fail, chances are that:
 153          *     1) A new opcode was added in include/lustre/lustre_idl.h,
 154          *        but is missing from the table above.
 155          * or  2) The opcode space was renumbered or rearranged,
 156          *        and the opcode_offset() function in
 157          *        ptlrpc_internal.h needs to be modified.
 158          */
 159         __u32 offset = opcode_offset(opcode);
 160         LASSERTF(offset < LUSTRE_MAX_OPCODES,
 161                  "offset %u >= LUSTRE_MAX_OPCODES %u\n",
 162                  offset, LUSTRE_MAX_OPCODES);
 163         LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
 164                  "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
 165                  offset, ll_rpc_opcode_table[offset].opcode, opcode);
 166         return ll_rpc_opcode_table[offset].opname;
 167 }
 168
 169 const char* ll_eopcode2str(__u32 opcode)
 170 {
 171         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
 172         return ll_eopcode_table[opcode].opname;
 173 }
 174 #ifdef LPROCFS
 175 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
 176                              char *name, struct proc_dir_entry **procroot_ret,
 177                              struct lprocfs_stats **stats_ret)
 178 {
 179         struct proc_dir_entry *svc_procroot;
 180         struct lprocfs_stats *svc_stats;
 181         int i, rc;
 182         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
 183                                           LPROCFS_CNTR_STDDEV;
 184
 185         LASSERT(*procroot_ret == NULL);
 186         LASSERT(*stats_ret == NULL);
 187
 188         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,0);
 189         if (svc_stats == NULL)
 190                 return;
 191
 192         if (dir) {
 193                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
 194                 if (IS_ERR(svc_procroot)) {
 195                         lprocfs_free_stats(&svc_stats);
 196                         return;
 197                 }
 198         } else {
 199                 svc_procroot = root;
 200         }
 201
 202         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
 203                              svc_counter_config, "req_waittime", "usec");
 204         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
 205                              svc_counter_config, "req_qdepth", "reqs");
 206         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
 207                              svc_counter_config, "req_active", "reqs");
 208         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
 209                              svc_counter_config, "req_timeout", "sec");
 210         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
 211                              svc_counter_config, "reqbuf_avail", "bufs");
 212         for (i = 0; i < EXTRA_LAST_OPC; i++) {
 213                 char *units;
 214
 215                 switch(i) {
 216                 case BRW_WRITE_BYTES:
 217                 case BRW_READ_BYTES:
 218                         units = "bytes";
 219                         break;
 220                 default:
 221                         units = "reqs";
 222                         break;
 223                 }
 224                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
 225                                      svc_counter_config,
 226                                      ll_eopcode2str(i), units);
 227         }
 228         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
 229                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
 230                 lprocfs_counter_init(svc_stats,
 231                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
 232                                      ll_opcode2str(opcode), "usec");
 233         }
 234
 235         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
 236         if (rc < 0) {
 237                 if (dir)
 238                         lprocfs_remove(&svc_procroot);
 239                 lprocfs_free_stats(&svc_stats);
 240         } else {
 241                 if (dir)
 242                         *procroot_ret = svc_procroot;
 243                 *stats_ret = svc_stats;
 244         }
 245 }
 246
 247 static int
 248 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
 249                                     int count, int *eof, void *data)
 250 {
 251         struct ptlrpc_service *svc = data;
 252
 253         *eof = 1;
 254         return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds);
 255 }
 256
 257 static int
 258 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
 259                                     int count, int *eof, void *data)
 260 {
 261         struct ptlrpc_service *svc = data;
 262
 263         *eof = 1;
 264         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
 265 }
 266
 267 static int
 268 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
 269                                      unsigned long count, void *data)
 270 {
 271         struct ptlrpc_service *svc = data;
 272         int                    bufpages;
 273         int                    val;
 274         int                    rc = lprocfs_write_helper(buffer, count, &val);
 275
 276         if (rc < 0)
 277                 return rc;
 278
 279         if (val < 0)
 280                 return -ERANGE;
 281
 282         /* This sanity check is more of an insanity check; we can still
 283          * hose a kernel by allowing the request history to grow too
 284          * far. */
 285         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
 286         if (val > num_physpages/(2 * bufpages))
 287                 return -ERANGE;
 288
 289         spin_lock(&svc->srv_lock);
 290         svc->srv_max_history_rqbds = val;
 291         spin_unlock(&svc->srv_lock);
 292
 293         return count;
 294 }
 295
 296 struct ptlrpc_srh_iterator {
 297         __u64                  srhi_seq;
 298         struct ptlrpc_request *srhi_req;
 299 };
 300
 301 int
 302 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 303                                     struct ptlrpc_srh_iterator *srhi,
 304                                     __u64 seq)
 305 {
 306         struct list_head      *e;
 307         struct ptlrpc_request *req;
 308
 309         if (srhi->srhi_req != NULL &&
 310             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 311             srhi->srhi_seq <= seq) {
 312                 /* If srhi_req was set previously, hasn't been culled and
 313                  * we're searching for a seq on or after it (i.e. more
 314                  * recent), search from it onwards.
 315                  * Since the service history is LRU (i.e. culled reqs will
 316                  * be near the head), we shouldn't have to do long
 317                  * re-scans */
 318                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 319                 LASSERT (!list_empty(&svc->srv_request_history));
 320                 e = &srhi->srhi_req->rq_history_list;
 321         } else {
 322                 /* search from start */
 323                 e = svc->srv_request_history.next;
 324         }
 325
 326         while (e != &svc->srv_request_history) {
 327                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 328
 329                 if (req->rq_history_seq >= seq) {
 330                         srhi->srhi_seq = req->rq_history_seq;
 331                         srhi->srhi_req = req;
 332                         return 0;
 333                 }
 334                 e = e->next;
 335         }
 336
 337         return -ENOENT;
 338 }
 339
 340 static void *
 341 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 342 {
 343         struct ptlrpc_service       *svc = s->private;
 344         struct ptlrpc_srh_iterator  *srhi;
 345         int                          rc;
 346
 347         OBD_ALLOC(srhi, sizeof(*srhi));
 348         if (srhi == NULL)
 349                 return NULL;
 350
 351         srhi->srhi_seq = 0;
 352         srhi->srhi_req = NULL;
 353
 354         spin_lock(&svc->srv_lock);
 355         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 356         spin_unlock(&svc->srv_lock);
 357
 358         if (rc == 0) {
 359                 *pos = srhi->srhi_seq;
 360                 return srhi;
 361         }
 362
 363         OBD_FREE(srhi, sizeof(*srhi));
 364         return NULL;
 365 }
 366
 367 static void
 368 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 369 {
 370         struct ptlrpc_srh_iterator *srhi = iter;
 371
 372         if (srhi != NULL)
 373                 OBD_FREE(srhi, sizeof(*srhi));
 374 }
 375
 376 static void *
 377 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 378                                     void *iter, loff_t *pos)
 379 {
 380         struct ptlrpc_service       *svc = s->private;
 381         struct ptlrpc_srh_iterator  *srhi = iter;
 382         int                          rc;
 383
 384         spin_lock(&svc->srv_lock);
 385         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 386         spin_unlock(&svc->srv_lock);
 387
 388         if (rc != 0) {
 389                 OBD_FREE(srhi, sizeof(*srhi));
 390                 return NULL;
 391         }
 392
 393         *pos = srhi->srhi_seq;
 394         return srhi;
 395 }
 396
 397 /* common ost/mdt srv_request_history_print_fn */
 398 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 399 {
 400         /* Called holding srv_lock with irqs disabled.
 401          * Print specific req contents and a newline.
 402          * CAVEAT EMPTOR: check request message length before printing!!!
 403          * You might have received any old crap so you must be just as
 404          * careful here as the service's request parser!!! */
 405         struct seq_file *sf = seq_file;
 406
 407         switch (req->rq_phase) {
 408         case RQ_PHASE_NEW:
 409                 /* still awaiting a service thread's attention, or rejected
 410                  * because the generic request message didn't unpack */
 411                 seq_printf(sf, "<not swabbed>\n");
 412                 break;
 413         case RQ_PHASE_INTERPRET:
 414                 /* being handled, so basic msg swabbed, and opc is valid
 415                  * but racing with mds_handle() */
 416         case RQ_PHASE_COMPLETE:
 417                 /* been handled by mds_handle() reply state possibly still
 418                  * volatile */
 419                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 420                 break;
 421         default:
 422                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 423         }
 424 }
 425 EXPORT_SYMBOL(target_print_req);
 426
 427 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 428 {
 429         struct ptlrpc_service      *svc = s->private;
 430         struct ptlrpc_srh_iterator *srhi = iter;
 431         struct ptlrpc_request      *req;
 432         int                         rc;
 433
 434         spin_lock(&svc->srv_lock);
 435
 436         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 437
 438         if (rc == 0) {
 439                 req = srhi->srhi_req;
 440
 441                 /* Print common req fields.
 442                  * CAVEAT EMPTOR: we're racing with the service handler
 443                  * here.  The request could contain any old crap, so you
 444                  * must be just as careful as the service's request
 445                  * parser. Currently I only print stuff here I know is OK
 446                  * to look at coz it was set up in request_in_callback()!!! */
 447                 seq_printf(s, LPD64":%s:%s:x"LPU64":%d:%s:%ld:%lds(%+lds) ",
 448                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 449                            libcfs_id2str(req->rq_peer), req->rq_xid,
 450                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 451                            req->rq_arrival_time.tv_sec,
 452                            req->rq_sent - req->rq_arrival_time.tv_sec,
 453                            req->rq_sent - req->rq_deadline);
 454                 if (svc->srv_request_history_print_fn == NULL)
 455                         seq_printf(s, "\n");
 456                 else
 457                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 458         }
 459
 460         spin_unlock(&svc->srv_lock);
 461
 462         return rc;
 463 }
 464
 465 static int
 466 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 467 {
 468         static struct seq_operations sops = {
 469                 .start = ptlrpc_lprocfs_svc_req_history_start,
 470                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 471                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 472                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 473         };
 474         struct proc_dir_entry *dp = PDE(inode);
 475         struct seq_file       *seqf;
 476         int                    rc;
 477
 478         LPROCFS_ENTRY_AND_CHECK(dp);
 479         rc = seq_open(file, &sops);
 480         if (rc) {
 481                 LPROCFS_EXIT();
 482                 return rc;
 483         }
 484
 485         seqf = file->private_data;
 486         seqf->private = dp->data;
 487         return 0;
 488 }
 489
 490 /* See also lprocfs_rd_timeouts */
 491 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 492                                       int count, int *eof, void *data)
 493 {
 494         struct ptlrpc_service *svc = data;
 495         unsigned int cur, worst;
 496         time_t worstt;
 497         struct dhms ts;
 498         int rc = 0;
 499
 500         *eof = 1;
 501         cur = at_get(&svc->srv_at_estimate);
 502         worst = svc->srv_at_estimate.at_worst_ever;
 503         worstt = svc->srv_at_estimate.at_worst_time;
 504         s2dhms(&ts, cfs_time_current_sec() - worstt);
 505         if (AT_OFF)
 506                 rc += snprintf(page + rc, count - rc,
 507                               "adaptive timeouts off, using obd_timeout %u\n",
 508                               obd_timeout);
 509         rc += snprintf(page + rc, count - rc,
 510                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 511                        "service", cur, worst, worstt,
 512                        DHMS_VARS(&ts));
 513         rc = lprocfs_at_hist_helper(page, count, rc,
 514                                     &svc->srv_at_estimate);
 515         return rc;
 516 }
 517
 518 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
 519                                       int count, int *eof, void *data)
 520 {
 521         struct ptlrpc_service *svc = data;
 522         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
 523         return rc;
 524 }
 525
 526 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
 527                                       unsigned long count, void *data)
 528 {
 529         struct ptlrpc_service *svc = data;
 530         int rc, val;
 531
 532         rc = lprocfs_write_helper(buffer, count, &val);
 533         if (rc < 0)
 534                 return rc;
 535         if (val < 0)
 536                 return -ERANGE;
 537
 538         spin_lock(&svc->srv_lock);
 539         svc->srv_hpreq_ratio = val;
 540         spin_unlock(&svc->srv_lock);
 541         return count;
 542 }
 543
 544 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 545                                      struct ptlrpc_service *svc)
 546 {
 547         struct lprocfs_vars lproc_vars[] = {
 548                 {.name       = "req_buffer_history_len",
 549                  .write_fptr = NULL,
 550                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 551                  .data       = svc},
 552                 {.name       = "req_buffer_history_max",
 553                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 554                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 555                  .data       = svc},
 556                 {.name       = "timeouts",
 557                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 558                  .data       = svc},
 559                 {.name       = "high_priority_ratio",
 560                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
 561                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
 562                  .data       = svc},
 563                 {NULL}
 564         };
 565         static struct file_operations req_history_fops = {
 566                 .owner       = THIS_MODULE,
 567                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 568                 .read        = seq_read,
 569                 .llseek      = seq_lseek,
 570                 .release     = lprocfs_seq_release,
 571         };
 572
 573         int rc;
 574
 575         ptlrpc_lprocfs_register(entry, svc->srv_name,
 576                                 "stats", &svc->srv_procroot,
 577                                 &svc->srv_stats);
 578
 579         if (svc->srv_procroot == NULL)
 580                 return;
 581
 582         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 583
 584         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
 585                                 0400, &req_history_fops, svc);
 586         if (rc)
 587                 CWARN("Error adding the req_history file\n");
 588 }
 589
 590 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 591 {
 592         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 593                                 &obddev->obd_svc_procroot,
 594                                 &obddev->obd_svc_stats);
 595 }
 596 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 597
 598 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
 599 {
 600         struct lprocfs_stats *svc_stats;
 601         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 602         int opc = opcode_offset(op);
 603
 604         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 605         if (svc_stats == NULL || opc <= 0)
 606                 return;
 607         LASSERT(opc < LUSTRE_MAX_OPCODES);
 608         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
 609                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
 610 }
 611
 612 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
 613 {
 614         struct lprocfs_stats *svc_stats;
 615         int idx;
 616
 617         if (!req->rq_import)
 618                 return;
 619         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 620         if (!svc_stats)
 621                 return;
 622         idx = lustre_msg_get_opc(req->rq_reqmsg);
 623         switch (idx) {
 624         case OST_READ:
 625                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
 626                 break;
 627         case OST_WRITE:
 628                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
 629                 break;
 630         default:
 631                 LASSERTF(0, "unsupported opcode %u\n", idx);
 632                 break;
 633         }
 634
 635         lprocfs_counter_add(svc_stats, idx, bytes);
 636 }
 637
 638 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 639
 640 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 641 {
 642         if (svc->srv_procroot != NULL)
 643                 lprocfs_remove(&svc->srv_procroot);
 644
 645         if (svc->srv_stats)
 646                 lprocfs_free_stats(&svc->srv_stats);
 647 }
 648
 649 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 650 {
 651         if (obd->obd_svc_procroot)
 652                 lprocfs_remove(&obd->obd_svc_procroot);
 653
 654         if (obd->obd_svc_stats)
 655                 lprocfs_free_stats(&obd->obd_svc_stats);
 656 }
 657 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 658
 659
 660 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 661                             unsigned long count, void *data)
 662 {
 663         struct obd_device *obd = data;
 664         char tmpbuf[sizeof(struct obd_uuid)];
 665
 666         /* Kludge code(deadlock situation): the lprocfs lock has been held
 667          * since the client is evicted by writting client's
 668          * uuid/nid to procfs "evict_client" entry. However,
 669          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 670          * the proc entries under the being destroyed export{}, so I have
 671          * to drop the lock at first here.
 672          * - jay, jxiong@clusterfs.com */
 673         class_incref(obd, __FUNCTION__, cfs_current());
 674         LPROCFS_EXIT();
 675
 676         sscanf(buffer, "%40s", tmpbuf);
 677         if (strncmp(tmpbuf, "nid:", 4) == 0)
 678                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 679         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 680                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 681         else
 682                 obd_export_evict_by_uuid(obd, tmpbuf);
 683
 684         LPROCFS_ENTRY();
 685         class_decref(obd, __FUNCTION__, cfs_current());
 686
 687         return count;
 688 }
 689 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 690
 691 int lprocfs_wr_ping(struct file *file, const char *buffer,
 692                     unsigned long count, void *data)
 693 {
 694         struct obd_device     *obd = data;
 695         struct ptlrpc_request *req;
 696         int                    rc;
 697         ENTRY;
 698
 699         LPROCFS_CLIMP_CHECK(obd);
 700         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
 701         LPROCFS_CLIMP_EXIT(obd);
 702         if (req == NULL)
 703                 RETURN(-ENOMEM);
 704
 705         req->rq_send_state = LUSTRE_IMP_FULL;
 706
 707         rc = ptlrpc_queue_wait(req);
 708
 709         ptlrpc_req_finished(req);
 710         if (rc >= 0)
 711                 RETURN(count);
 712         RETURN(rc);
 713 }
 714 EXPORT_SYMBOL(lprocfs_wr_ping);
 715
 716 #endif /* LPROCFS */