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 static int
 297 ptlrpc_lprocfs_rd_threads_min(char *page, char **start, off_t off,
 298                               int count, int *eof, void *data)
 299 {
 300         struct ptlrpc_service *svc = data;
 301
 302         return snprintf(page, count, "%d\n", svc->srv_threads_min);
 303 }
 304
 305 static int
 306 ptlrpc_lprocfs_wr_threads_min(struct file *file, const char *buffer,
 307                               unsigned long count, void *data)
 308 {
 309         struct ptlrpc_service *svc = data;
 310         int                    val;
 311         int                    rc = lprocfs_write_helper(buffer, count, &val);
 312
 313         if (rc < 0)
 314                 return rc;
 315
 316         if (val < 2)
 317                 return -ERANGE;
 318
 319         if (val > svc->srv_threads_max)
 320                 return -ERANGE;
 321
 322         spin_lock(&svc->srv_lock);
 323         svc->srv_threads_min = val;
 324         spin_unlock(&svc->srv_lock);
 325
 326         return count;
 327 }
 328
 329 static int
 330 ptlrpc_lprocfs_rd_threads_started(char *page, char **start, off_t off,
 331                                   int count, int *eof, void *data)
 332 {
 333         struct ptlrpc_service *svc = data;
 334
 335         return snprintf(page, count, "%d\n", svc->srv_threads_started);
 336 }
 337
 338 static int
 339 ptlrpc_lprocfs_rd_threads_max(char *page, char **start, off_t off,
 340                               int count, int *eof, void *data)
 341 {
 342         struct ptlrpc_service *svc = data;
 343
 344         return snprintf(page, count, "%d\n", svc->srv_threads_max);
 345 }
 346
 347 static int
 348 ptlrpc_lprocfs_wr_threads_max(struct file *file, const char *buffer,
 349                               unsigned long count, void *data)
 350 {
 351         struct ptlrpc_service *svc = data;
 352         int                    val;
 353         int                    rc = lprocfs_write_helper(buffer, count, &val);
 354
 355         if (rc < 0)
 356                 return rc;
 357
 358         if (val < 2)
 359                 return -ERANGE;
 360
 361         if (val < svc->srv_threads_min)
 362                 return -ERANGE;
 363
 364         spin_lock(&svc->srv_lock);
 365         svc->srv_threads_max = val;
 366         spin_unlock(&svc->srv_lock);
 367
 368         return count;
 369 }
 370
 371 struct ptlrpc_srh_iterator {
 372         __u64                  srhi_seq;
 373         struct ptlrpc_request *srhi_req;
 374 };
 375
 376 int
 377 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
 378                                     struct ptlrpc_srh_iterator *srhi,
 379                                     __u64 seq)
 380 {
 381         struct list_head      *e;
 382         struct ptlrpc_request *req;
 383
 384         if (srhi->srhi_req != NULL &&
 385             srhi->srhi_seq > svc->srv_request_max_cull_seq &&
 386             srhi->srhi_seq <= seq) {
 387                 /* If srhi_req was set previously, hasn't been culled and
 388                  * we're searching for a seq on or after it (i.e. more
 389                  * recent), search from it onwards.
 390                  * Since the service history is LRU (i.e. culled reqs will
 391                  * be near the head), we shouldn't have to do long
 392                  * re-scans */
 393                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
 394                 LASSERT (!list_empty(&svc->srv_request_history));
 395                 e = &srhi->srhi_req->rq_history_list;
 396         } else {
 397                 /* search from start */
 398                 e = svc->srv_request_history.next;
 399         }
 400
 401         while (e != &svc->srv_request_history) {
 402                 req = list_entry(e, struct ptlrpc_request, rq_history_list);
 403
 404                 if (req->rq_history_seq >= seq) {
 405                         srhi->srhi_seq = req->rq_history_seq;
 406                         srhi->srhi_req = req;
 407                         return 0;
 408                 }
 409                 e = e->next;
 410         }
 411
 412         return -ENOENT;
 413 }
 414
 415 static void *
 416 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
 417 {
 418         struct ptlrpc_service       *svc = s->private;
 419         struct ptlrpc_srh_iterator  *srhi;
 420         int                          rc;
 421
 422         OBD_ALLOC(srhi, sizeof(*srhi));
 423         if (srhi == NULL)
 424                 return NULL;
 425
 426         srhi->srhi_seq = 0;
 427         srhi->srhi_req = NULL;
 428
 429         spin_lock(&svc->srv_lock);
 430         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
 431         spin_unlock(&svc->srv_lock);
 432
 433         if (rc == 0) {
 434                 *pos = srhi->srhi_seq;
 435                 return srhi;
 436         }
 437
 438         OBD_FREE(srhi, sizeof(*srhi));
 439         return NULL;
 440 }
 441
 442 static void
 443 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 444 {
 445         struct ptlrpc_srh_iterator *srhi = iter;
 446
 447         if (srhi != NULL)
 448                 OBD_FREE(srhi, sizeof(*srhi));
 449 }
 450
 451 static void *
 452 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
 453                                     void *iter, loff_t *pos)
 454 {
 455         struct ptlrpc_service       *svc = s->private;
 456         struct ptlrpc_srh_iterator  *srhi = iter;
 457         int                          rc;
 458
 459         spin_lock(&svc->srv_lock);
 460         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
 461         spin_unlock(&svc->srv_lock);
 462
 463         if (rc != 0) {
 464                 OBD_FREE(srhi, sizeof(*srhi));
 465                 return NULL;
 466         }
 467
 468         *pos = srhi->srhi_seq;
 469         return srhi;
 470 }
 471
 472 /* common ost/mdt srv_request_history_print_fn */
 473 void target_print_req(void *seq_file, struct ptlrpc_request *req)
 474 {
 475         /* Called holding srv_lock with irqs disabled.
 476          * Print specific req contents and a newline.
 477          * CAVEAT EMPTOR: check request message length before printing!!!
 478          * You might have received any old crap so you must be just as
 479          * careful here as the service's request parser!!! */
 480         struct seq_file *sf = seq_file;
 481
 482         switch (req->rq_phase) {
 483         case RQ_PHASE_NEW:
 484                 /* still awaiting a service thread's attention, or rejected
 485                  * because the generic request message didn't unpack */
 486                 seq_printf(sf, "<not swabbed>\n");
 487                 break;
 488         case RQ_PHASE_INTERPRET:
 489                 /* being handled, so basic msg swabbed, and opc is valid
 490                  * but racing with mds_handle() */
 491         case RQ_PHASE_COMPLETE:
 492                 /* been handled by mds_handle() reply state possibly still
 493                  * volatile */
 494                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
 495                 break;
 496         default:
 497                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
 498         }
 499 }
 500 EXPORT_SYMBOL(target_print_req);
 501
 502 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 503 {
 504         struct ptlrpc_service      *svc = s->private;
 505         struct ptlrpc_srh_iterator *srhi = iter;
 506         struct ptlrpc_request      *req;
 507         int                         rc;
 508
 509         spin_lock(&svc->srv_lock);
 510
 511         rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
 512
 513         if (rc == 0) {
 514                 req = srhi->srhi_req;
 515
 516                 /* Print common req fields.
 517                  * CAVEAT EMPTOR: we're racing with the service handler
 518                  * here.  The request could contain any old crap, so you
 519                  * must be just as careful as the service's request
 520                  * parser. Currently I only print stuff here I know is OK
 521                  * to look at coz it was set up in request_in_callback()!!! */
 522                 seq_printf(s, LPD64":%s:%s:x"LPU64":%d:%s:%ld:%lds(%+lds) ",
 523                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
 524                            libcfs_id2str(req->rq_peer), req->rq_xid,
 525                            req->rq_reqlen, ptlrpc_rqphase2str(req),
 526                            req->rq_arrival_time.tv_sec,
 527                            req->rq_sent - req->rq_arrival_time.tv_sec,
 528                            req->rq_sent - req->rq_deadline);
 529                 if (svc->srv_request_history_print_fn == NULL)
 530                         seq_printf(s, "\n");
 531                 else
 532                         svc->srv_request_history_print_fn(s, srhi->srhi_req);
 533         }
 534
 535         spin_unlock(&svc->srv_lock);
 536
 537         return rc;
 538 }
 539
 540 static int
 541 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
 542 {
 543         static struct seq_operations sops = {
 544                 .start = ptlrpc_lprocfs_svc_req_history_start,
 545                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
 546                 .next  = ptlrpc_lprocfs_svc_req_history_next,
 547                 .show  = ptlrpc_lprocfs_svc_req_history_show,
 548         };
 549         struct proc_dir_entry *dp = PDE(inode);
 550         struct seq_file       *seqf;
 551         int                    rc;
 552
 553         LPROCFS_ENTRY_AND_CHECK(dp);
 554         rc = seq_open(file, &sops);
 555         if (rc) {
 556                 LPROCFS_EXIT();
 557                 return rc;
 558         }
 559
 560         seqf = file->private_data;
 561         seqf->private = dp->data;
 562         return 0;
 563 }
 564
 565 /* See also lprocfs_rd_timeouts */
 566 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
 567                                       int count, int *eof, void *data)
 568 {
 569         struct ptlrpc_service *svc = data;
 570         unsigned int cur, worst;
 571         time_t worstt;
 572         struct dhms ts;
 573         int rc = 0;
 574
 575         *eof = 1;
 576         cur = at_get(&svc->srv_at_estimate);
 577         worst = svc->srv_at_estimate.at_worst_ever;
 578         worstt = svc->srv_at_estimate.at_worst_time;
 579         s2dhms(&ts, cfs_time_current_sec() - worstt);
 580         if (AT_OFF)
 581                 rc += snprintf(page + rc, count - rc,
 582                               "adaptive timeouts off, using obd_timeout %u\n",
 583                               obd_timeout);
 584         rc += snprintf(page + rc, count - rc,
 585                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
 586                        "service", cur, worst, worstt,
 587                        DHMS_VARS(&ts));
 588         rc = lprocfs_at_hist_helper(page, count, rc,
 589                                     &svc->srv_at_estimate);
 590         return rc;
 591 }
 592
 593 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
 594                                       int count, int *eof, void *data)
 595 {
 596         struct ptlrpc_service *svc = data;
 597         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
 598         return rc;
 599 }
 600
 601 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
 602                                       unsigned long count, void *data)
 603 {
 604         struct ptlrpc_service *svc = data;
 605         int rc, val;
 606
 607         rc = lprocfs_write_helper(buffer, count, &val);
 608         if (rc < 0)
 609                 return rc;
 610         if (val < 0)
 611                 return -ERANGE;
 612
 613         spin_lock(&svc->srv_lock);
 614         svc->srv_hpreq_ratio = val;
 615         spin_unlock(&svc->srv_lock);
 616         return count;
 617 }
 618
 619 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 620                                      struct ptlrpc_service *svc)
 621 {
 622         struct lprocfs_vars lproc_vars[] = {
 623                 {.name       = "high_priority_ratio",
 624                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
 625                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
 626                  .data       = svc},
 627                 {.name       = "req_buffer_history_len",
 628                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
 629                  .data       = svc},
 630                 {.name       = "req_buffer_history_max",
 631                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
 632                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
 633                  .data       = svc},
 634                 {.name       = "threads_min",
 635                  .read_fptr  = ptlrpc_lprocfs_rd_threads_min,
 636                  .write_fptr = ptlrpc_lprocfs_wr_threads_min,
 637                  .data       = svc},
 638                 {.name       = "threads_max",
 639                  .read_fptr  = ptlrpc_lprocfs_rd_threads_max,
 640                  .write_fptr = ptlrpc_lprocfs_wr_threads_max,
 641                  .data       = svc},
 642                 {.name       = "threads_started",
 643                  .read_fptr  = ptlrpc_lprocfs_rd_threads_started,
 644                  .data       = svc},
 645                 {.name       = "timeouts",
 646                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
 647                  .data       = svc},
 648                 {NULL}
 649         };
 650         static struct file_operations req_history_fops = {
 651                 .owner       = THIS_MODULE,
 652                 .open        = ptlrpc_lprocfs_svc_req_history_open,
 653                 .read        = seq_read,
 654                 .llseek      = seq_lseek,
 655                 .release     = lprocfs_seq_release,
 656         };
 657
 658         int rc;
 659
 660         ptlrpc_lprocfs_register(entry, svc->srv_name,
 661                                 "stats", &svc->srv_procroot,
 662                                 &svc->srv_stats);
 663
 664         if (svc->srv_procroot == NULL)
 665                 return;
 666
 667         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
 668
 669         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
 670                                 0400, &req_history_fops, svc);
 671         if (rc)
 672                 CWARN("Error adding the req_history file\n");
 673 }
 674
 675 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 676 {
 677         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
 678                                 &obddev->obd_svc_procroot,
 679                                 &obddev->obd_svc_stats);
 680 }
 681 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 682
 683 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
 684 {
 685         struct lprocfs_stats *svc_stats;
 686         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
 687         int opc = opcode_offset(op);
 688
 689         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 690         if (svc_stats == NULL || opc <= 0)
 691                 return;
 692         LASSERT(opc < LUSTRE_MAX_OPCODES);
 693         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
 694                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
 695 }
 696
 697 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
 698 {
 699         struct lprocfs_stats *svc_stats;
 700         int idx;
 701
 702         if (!req->rq_import)
 703                 return;
 704         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
 705         if (!svc_stats)
 706                 return;
 707         idx = lustre_msg_get_opc(req->rq_reqmsg);
 708         switch (idx) {
 709         case OST_READ:
 710                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
 711                 break;
 712         case OST_WRITE:
 713                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
 714                 break;
 715         default:
 716                 LASSERTF(0, "unsupported opcode %u\n", idx);
 717                 break;
 718         }
 719
 720         lprocfs_counter_add(svc_stats, idx, bytes);
 721 }
 722
 723 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 724
 725 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 726 {
 727         if (svc->srv_procroot != NULL)
 728                 lprocfs_remove(&svc->srv_procroot);
 729
 730         if (svc->srv_stats)
 731                 lprocfs_free_stats(&svc->srv_stats);
 732 }
 733
 734 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 735 {
 736         if (obd->obd_svc_procroot)
 737                 lprocfs_remove(&obd->obd_svc_procroot);
 738
 739         if (obd->obd_svc_stats)
 740                 lprocfs_free_stats(&obd->obd_svc_stats);
 741 }
 742 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 743
 744
 745 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
 746                             unsigned long count, void *data)
 747 {
 748         struct obd_device *obd = data;
 749         char tmpbuf[sizeof(struct obd_uuid)];
 750
 751         /* Kludge code(deadlock situation): the lprocfs lock has been held
 752          * since the client is evicted by writting client's
 753          * uuid/nid to procfs "evict_client" entry. However,
 754          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
 755          * the proc entries under the being destroyed export{}, so I have
 756          * to drop the lock at first here.
 757          * - jay, jxiong@clusterfs.com */
 758         class_incref(obd, __FUNCTION__, cfs_current());
 759         LPROCFS_EXIT();
 760
 761         sscanf(buffer, "%40s", tmpbuf);
 762         if (strncmp(tmpbuf, "nid:", 4) == 0)
 763                 obd_export_evict_by_nid(obd, tmpbuf + 4);
 764         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
 765                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
 766         else
 767                 obd_export_evict_by_uuid(obd, tmpbuf);
 768
 769         LPROCFS_ENTRY();
 770         class_decref(obd, __FUNCTION__, cfs_current());
 771
 772         return count;
 773 }
 774 EXPORT_SYMBOL(lprocfs_wr_evict_client);
 775
 776 int lprocfs_wr_ping(struct file *file, const char *buffer,
 777                     unsigned long count, void *data)
 778 {
 779         struct obd_device     *obd = data;
 780         struct ptlrpc_request *req;
 781         int                    rc;
 782         ENTRY;
 783
 784         LPROCFS_CLIMP_CHECK(obd);
 785         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
 786         LPROCFS_CLIMP_EXIT(obd);
 787         if (req == NULL)
 788                 RETURN(-ENOMEM);
 789
 790         req->rq_send_state = LUSTRE_IMP_FULL;
 791
 792         rc = ptlrpc_queue_wait(req);
 793
 794         ptlrpc_req_finished(req);
 795         if (rc >= 0)
 796                 RETURN(count);
 797         RETURN(rc);
 798 }
 799 EXPORT_SYMBOL(lprocfs_wr_ping);
 800
 801 #endif /* LPROCFS */