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[fs/lustre-release.git] / lustre / ptlrpc / lproc_ptlrpc.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2012, Whamcloud, Inc.
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         { MGS_CONFIG_READ,  "mgs_config_read" },
111         { OBD_PING,         "obd_ping" },
112         { OBD_LOG_CANCEL,   "llog_origin_handle_cancel" },
113         { OBD_QC_CALLBACK,  "obd_quota_callback" },
114         { LLOG_ORIGIN_HANDLE_CREATE,     "llog_origin_handle_create" },
115         { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
116         { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
117         { LLOG_ORIGIN_HANDLE_WRITE_REC,  "llog_origin_handle_write_rec" },
118         { LLOG_ORIGIN_HANDLE_CLOSE,      "llog_origin_handle_close" },
119         { LLOG_ORIGIN_CONNECT,           "llog_origin_connect" },
120         { LLOG_CATINFO,                  "llog_catinfo" },
121         { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
122         { LLOG_ORIGIN_HANDLE_DESTROY,    "llog_origin_handle_destroy" },
123         { QUOTA_DQACQ,      "quota_acquire" },
124         { QUOTA_DQREL,      "quota_release" },
125         { SEQ_QUERY,        "seq_query" },
126         { SEC_CTX_INIT,     "sec_ctx_init" },
127         { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
128         { SEC_CTX_FINI,     "sec_ctx_fini" },
129         { FLD_QUERY,        "fld_query" }
130 };
131
132 struct ll_eopcode {
133      __u32       opcode;
134      const char *opname;
135 } ll_eopcode_table[EXTRA_LAST_OPC] = {
136         { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
137         { LDLM_PLAIN_ENQUEUE,   "ldlm_plain_enqueue" },
138         { LDLM_EXTENT_ENQUEUE,  "ldlm_extent_enqueue" },
139         { LDLM_FLOCK_ENQUEUE,   "ldlm_flock_enqueue" },
140         { LDLM_IBITS_ENQUEUE,   "ldlm_ibits_enqueue" },
141         { MDS_REINT_SETATTR,    "mds_reint_setattr" },
142         { MDS_REINT_CREATE,     "mds_reint_create" },
143         { MDS_REINT_LINK,       "mds_reint_link" },
144         { MDS_REINT_UNLINK,     "mds_reint_unlink" },
145         { MDS_REINT_RENAME,     "mds_reint_rename" },
146         { MDS_REINT_OPEN,       "mds_reint_open" },
147         { MDS_REINT_SETXATTR,   "mds_reint_setxattr" },
148         { BRW_READ_BYTES,       "read_bytes" },
149         { BRW_WRITE_BYTES,      "write_bytes" },
150 };
151
152 const char *ll_opcode2str(__u32 opcode)
153 {
154         /* When one of the assertions below fail, chances are that:
155          *     1) A new opcode was added in include/lustre/lustre_idl.h,
156          *        but is missing from the table above.
157          * or  2) The opcode space was renumbered or rearranged,
158          *        and the opcode_offset() function in
159          *        ptlrpc_internal.h needs to be modified.
160          */
161         __u32 offset = opcode_offset(opcode);
162         LASSERTF(offset < LUSTRE_MAX_OPCODES,
163                  "offset %u >= LUSTRE_MAX_OPCODES %u\n",
164                  offset, LUSTRE_MAX_OPCODES);
165         LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
166                  "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
167                  offset, ll_rpc_opcode_table[offset].opcode, opcode);
168         return ll_rpc_opcode_table[offset].opname;
169 }
170
171 const char* ll_eopcode2str(__u32 opcode)
172 {
173         LASSERT(ll_eopcode_table[opcode].opcode == opcode);
174         return ll_eopcode_table[opcode].opname;
175 }
176 #ifdef LPROCFS
177 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
178                              char *name, struct proc_dir_entry **procroot_ret,
179                              struct lprocfs_stats **stats_ret)
180 {
181         struct proc_dir_entry *svc_procroot;
182         struct lprocfs_stats *svc_stats;
183         int i, rc;
184         unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
185                                           LPROCFS_CNTR_STDDEV;
186
187         LASSERT(*procroot_ret == NULL);
188         LASSERT(*stats_ret == NULL);
189
190         svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,0);
191         if (svc_stats == NULL)
192                 return;
193
194         if (dir) {
195                 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
196                 if (IS_ERR(svc_procroot)) {
197                         lprocfs_free_stats(&svc_stats);
198                         return;
199                 }
200         } else {
201                 svc_procroot = root;
202         }
203
204         lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
205                              svc_counter_config, "req_waittime", "usec");
206         lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
207                              svc_counter_config, "req_qdepth", "reqs");
208         lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
209                              svc_counter_config, "req_active", "reqs");
210         lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
211                              svc_counter_config, "req_timeout", "sec");
212         lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
213                              svc_counter_config, "reqbuf_avail", "bufs");
214         for (i = 0; i < EXTRA_LAST_OPC; i++) {
215                 char *units;
216
217                 switch(i) {
218                 case BRW_WRITE_BYTES:
219                 case BRW_READ_BYTES:
220                         units = "bytes";
221                         break;
222                 default:
223                         units = "reqs";
224                         break;
225                 }
226                 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
227                                      svc_counter_config,
228                                      ll_eopcode2str(i), units);
229         }
230         for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
231                 __u32 opcode = ll_rpc_opcode_table[i].opcode;
232                 lprocfs_counter_init(svc_stats,
233                                      EXTRA_MAX_OPCODES + i, svc_counter_config,
234                                      ll_opcode2str(opcode), "usec");
235         }
236
237         rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
238         if (rc < 0) {
239                 if (dir)
240                         lprocfs_remove(&svc_procroot);
241                 lprocfs_free_stats(&svc_stats);
242         } else {
243                 if (dir)
244                         *procroot_ret = svc_procroot;
245                 *stats_ret = svc_stats;
246         }
247 }
248
249 static int
250 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
251                                     int count, int *eof, void *data)
252 {
253         struct ptlrpc_service *svc = data;
254
255         *eof = 1;
256         return snprintf(page, count, "%d\n", svc->srv_part->scp_hist_nrqbds);
257 }
258
259 static int
260 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
261                                     int count, int *eof, void *data)
262 {
263         struct ptlrpc_service *svc = data;
264
265         *eof = 1;
266         return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
267 }
268
269 static int
270 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
271                                      unsigned long count, void *data)
272 {
273         struct ptlrpc_service *svc = data;
274         int                    bufpages;
275         int                    val;
276         int                    rc = lprocfs_write_helper(buffer, count, &val);
277
278         if (rc < 0)
279                 return rc;
280
281         if (val < 0)
282                 return -ERANGE;
283
284         /* This sanity check is more of an insanity check; we can still
285          * hose a kernel by allowing the request history to grow too
286          * far. */
287         bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
288         if (val > cfs_num_physpages/(2 * bufpages))
289                 return -ERANGE;
290
291         cfs_spin_lock(&svc->srv_lock);
292         svc->srv_max_history_rqbds = val;
293         cfs_spin_unlock(&svc->srv_lock);
294
295         return count;
296 }
297
298 static int
299 ptlrpc_lprocfs_rd_threads_min(char *page, char **start, off_t off,
300                               int count, int *eof, void *data)
301 {
302         struct ptlrpc_service *svc = data;
303
304         return snprintf(page, count, "%d\n", svc->srv_threads_min);
305 }
306
307 static int
308 ptlrpc_lprocfs_wr_threads_min(struct file *file, const char *buffer,
309                               unsigned long count, void *data)
310 {
311         struct ptlrpc_service *svc = data;
312         int                    val;
313         int                    rc = lprocfs_write_helper(buffer, count, &val);
314
315         if (rc < 0)
316                 return rc;
317
318         if (val < 2)
319                 return -ERANGE;
320
321         cfs_spin_lock(&svc->srv_lock);
322         if (val > svc->srv_threads_max) {
323                 cfs_spin_unlock(&svc->srv_lock);
324                 return -ERANGE;
325         }
326
327         svc->srv_threads_min = val;
328         cfs_spin_unlock(&svc->srv_lock);
329
330         return count;
331 }
332
333 static int
334 ptlrpc_lprocfs_rd_threads_started(char *page, char **start, off_t off,
335                                   int count, int *eof, void *data)
336 {
337         struct ptlrpc_service *svc = data;
338
339         LASSERT(svc->srv_part != NULL);
340         return snprintf(page, count, "%d\n",
341                         svc->srv_part->scp_nthrs_running);
342 }
343
344 static int
345 ptlrpc_lprocfs_rd_threads_max(char *page, char **start, off_t off,
346                               int count, int *eof, void *data)
347 {
348         struct ptlrpc_service *svc = data;
349
350         return snprintf(page, count, "%d\n", svc->srv_threads_max);
351 }
352
353 static int
354 ptlrpc_lprocfs_wr_threads_max(struct file *file, const char *buffer,
355                               unsigned long count, void *data)
356 {
357         struct ptlrpc_service *svc = data;
358         int                    val;
359         int                    rc = lprocfs_write_helper(buffer, count, &val);
360
361         if (rc < 0)
362                 return rc;
363
364         if (val < 2)
365                 return -ERANGE;
366
367         cfs_spin_lock(&svc->srv_lock);
368         if (val < svc->srv_threads_min) {
369                 cfs_spin_unlock(&svc->srv_lock);
370                 return -ERANGE;
371         }
372
373         svc->srv_threads_max = val;
374         cfs_spin_unlock(&svc->srv_lock);
375
376         return count;
377 }
378
379 struct ptlrpc_srh_iterator {
380         __u64                  srhi_seq;
381         struct ptlrpc_request *srhi_req;
382 };
383
384 int
385 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
386                                     struct ptlrpc_srh_iterator *srhi,
387                                     __u64 seq)
388 {
389         cfs_list_t              *e;
390         struct ptlrpc_request   *req;
391
392         if (srhi->srhi_req != NULL &&
393             srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
394             srhi->srhi_seq <= seq) {
395                 /* If srhi_req was set previously, hasn't been culled and
396                  * we're searching for a seq on or after it (i.e. more
397                  * recent), search from it onwards.
398                  * Since the service history is LRU (i.e. culled reqs will
399                  * be near the head), we shouldn't have to do long
400                  * re-scans */
401                 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
402                 LASSERT(!cfs_list_empty(&svcpt->scp_hist_reqs));
403                 e = &srhi->srhi_req->rq_history_list;
404         } else {
405                 /* search from start */
406                 e = svcpt->scp_hist_reqs.next;
407         }
408
409         while (e != &svcpt->scp_hist_reqs) {
410                 req = cfs_list_entry(e, struct ptlrpc_request, rq_history_list);
411
412                 if (req->rq_history_seq >= seq) {
413                         srhi->srhi_seq = req->rq_history_seq;
414                         srhi->srhi_req = req;
415                         return 0;
416                 }
417                 e = e->next;
418         }
419
420         return -ENOENT;
421 }
422
423 static void *
424 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
425 {
426         struct ptlrpc_service       *svc = s->private;
427         struct ptlrpc_srh_iterator  *srhi;
428         int                          rc;
429
430         OBD_ALLOC(srhi, sizeof(*srhi));
431         if (srhi == NULL)
432                 return NULL;
433
434         srhi->srhi_seq = 0;
435         srhi->srhi_req = NULL;
436
437         cfs_spin_lock(&svc->srv_part->scp_lock);
438         rc = ptlrpc_lprocfs_svc_req_history_seek(svc->srv_part, srhi, *pos);
439         cfs_spin_unlock(&svc->srv_part->scp_lock);
440
441         if (rc == 0) {
442                 *pos = srhi->srhi_seq;
443                 return srhi;
444         }
445
446         OBD_FREE(srhi, sizeof(*srhi));
447         return NULL;
448 }
449
450 static void
451 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
452 {
453         struct ptlrpc_srh_iterator *srhi = iter;
454
455         if (srhi != NULL)
456                 OBD_FREE(srhi, sizeof(*srhi));
457 }
458
459 static void *
460 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
461                                     void *iter, loff_t *pos)
462 {
463         struct ptlrpc_service           *svc = s->private;
464         struct ptlrpc_service_part      *svcpt = svc->srv_part;
465         struct ptlrpc_srh_iterator      *srhi = iter;
466         int                             rc;
467
468         cfs_spin_lock(&svcpt->scp_lock);
469         rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, *pos + 1);
470         cfs_spin_unlock(&svcpt->scp_lock);
471
472         if (rc != 0) {
473                 OBD_FREE(srhi, sizeof(*srhi));
474                 return NULL;
475         }
476
477         *pos = srhi->srhi_seq;
478         return srhi;
479 }
480
481 /* common ost/mdt so_req_printer */
482 void target_print_req(void *seq_file, struct ptlrpc_request *req)
483 {
484         /* Called holding srv_lock with irqs disabled.
485          * Print specific req contents and a newline.
486          * CAVEAT EMPTOR: check request message length before printing!!!
487          * You might have received any old crap so you must be just as
488          * careful here as the service's request parser!!! */
489         struct seq_file *sf = seq_file;
490
491         switch (req->rq_phase) {
492         case RQ_PHASE_NEW:
493                 /* still awaiting a service thread's attention, or rejected
494                  * because the generic request message didn't unpack */
495                 seq_printf(sf, "<not swabbed>\n");
496                 break;
497         case RQ_PHASE_INTERPRET:
498                 /* being handled, so basic msg swabbed, and opc is valid
499                  * but racing with mds_handle() */
500         case RQ_PHASE_COMPLETE:
501                 /* been handled by mds_handle() reply state possibly still
502                  * volatile */
503                 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
504                 break;
505         default:
506                 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
507         }
508 }
509 EXPORT_SYMBOL(target_print_req);
510
511 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
512 {
513         struct ptlrpc_service           *svc = s->private;
514         struct ptlrpc_service_part      *svcpt = svc->srv_part;
515         struct ptlrpc_srh_iterator      *srhi = iter;
516         struct ptlrpc_request           *req;
517         int                             rc;
518
519         cfs_spin_lock(&svcpt->scp_lock);
520
521         rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
522
523         if (rc == 0) {
524                 req = srhi->srhi_req;
525
526                 /* Print common req fields.
527                  * CAVEAT EMPTOR: we're racing with the service handler
528                  * here.  The request could contain any old crap, so you
529                  * must be just as careful as the service's request
530                  * parser. Currently I only print stuff here I know is OK
531                  * to look at coz it was set up in request_in_callback()!!! */
532                 seq_printf(s, LPD64":%s:%s:x"LPU64":%d:%s:%ld:%lds(%+lds) ",
533                            req->rq_history_seq, libcfs_nid2str(req->rq_self),
534                            libcfs_id2str(req->rq_peer), req->rq_xid,
535                            req->rq_reqlen, ptlrpc_rqphase2str(req),
536                            req->rq_arrival_time.tv_sec,
537                            req->rq_sent - req->rq_arrival_time.tv_sec,
538                            req->rq_sent - req->rq_deadline);
539                 if (svc->srv_ops.so_req_printer == NULL)
540                         seq_printf(s, "\n");
541                 else
542                         svc->srv_ops.so_req_printer(s, srhi->srhi_req);
543         }
544
545         cfs_spin_unlock(&svcpt->scp_lock);
546         return rc;
547 }
548
549 static int
550 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
551 {
552         static struct seq_operations sops = {
553                 .start = ptlrpc_lprocfs_svc_req_history_start,
554                 .stop  = ptlrpc_lprocfs_svc_req_history_stop,
555                 .next  = ptlrpc_lprocfs_svc_req_history_next,
556                 .show  = ptlrpc_lprocfs_svc_req_history_show,
557         };
558         struct proc_dir_entry *dp = PDE(inode);
559         struct seq_file       *seqf;
560         int                    rc;
561
562         LPROCFS_ENTRY_AND_CHECK(dp);
563         rc = seq_open(file, &sops);
564         if (rc) {
565                 LPROCFS_EXIT();
566                 return rc;
567         }
568
569         seqf = file->private_data;
570         seqf->private = dp->data;
571         return 0;
572 }
573
574 /* See also lprocfs_rd_timeouts */
575 static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
576                                       int count, int *eof, void *data)
577 {
578         struct ptlrpc_service           *svc = data;
579         struct ptlrpc_service_part      *svcpt;
580         struct dhms                     ts;
581         time_t                          worstt;
582         unsigned int                    cur;
583         unsigned int                    worst;
584         int                             rc = 0;
585
586         svcpt = svc->srv_part;
587         LASSERT(svcpt != NULL);
588
589         *eof = 1;
590         cur = at_get(&svcpt->scp_at_estimate);
591         worst = svcpt->scp_at_estimate.at_worst_ever;
592         worstt = svcpt->scp_at_estimate.at_worst_time;
593         s2dhms(&ts, cfs_time_current_sec() - worstt);
594         if (AT_OFF)
595                 rc += snprintf(page + rc, count - rc,
596                               "adaptive timeouts off, using obd_timeout %u\n",
597                               obd_timeout);
598         rc += snprintf(page + rc, count - rc,
599                        "%10s : cur %3u  worst %3u (at %ld, "DHMS_FMT" ago) ",
600                        "service", cur, worst, worstt,
601                        DHMS_VARS(&ts));
602         rc = lprocfs_at_hist_helper(page, count, rc, &svcpt->scp_at_estimate);
603         return rc;
604 }
605
606 static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
607                                       int count, int *eof, void *data)
608 {
609         struct ptlrpc_service *svc = data;
610         int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
611         return rc;
612 }
613
614 static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
615                                       unsigned long count, void *data)
616 {
617         struct ptlrpc_service *svc = data;
618         int rc, val;
619
620         rc = lprocfs_write_helper(buffer, count, &val);
621         if (rc < 0)
622                 return rc;
623         if (val < 0)
624                 return -ERANGE;
625
626         cfs_spin_lock(&svc->srv_lock);
627         svc->srv_hpreq_ratio = val;
628         cfs_spin_unlock(&svc->srv_lock);
629
630         return count;
631 }
632
633 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
634                                      struct ptlrpc_service *svc)
635 {
636         struct lprocfs_vars lproc_vars[] = {
637                 {.name       = "high_priority_ratio",
638                  .read_fptr  = ptlrpc_lprocfs_rd_hp_ratio,
639                  .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
640                  .data       = svc},
641                 {.name       = "req_buffer_history_len",
642                  .read_fptr  = ptlrpc_lprocfs_read_req_history_len,
643                  .data       = svc},
644                 {.name       = "req_buffer_history_max",
645                  .write_fptr = ptlrpc_lprocfs_write_req_history_max,
646                  .read_fptr  = ptlrpc_lprocfs_read_req_history_max,
647                  .data       = svc},
648                 {.name       = "threads_min",
649                  .read_fptr  = ptlrpc_lprocfs_rd_threads_min,
650                  .write_fptr = ptlrpc_lprocfs_wr_threads_min,
651                  .data       = svc},
652                 {.name       = "threads_max",
653                  .read_fptr  = ptlrpc_lprocfs_rd_threads_max,
654                  .write_fptr = ptlrpc_lprocfs_wr_threads_max,
655                  .data       = svc},
656                 {.name       = "threads_started",
657                  .read_fptr  = ptlrpc_lprocfs_rd_threads_started,
658                  .data       = svc},
659                 {.name       = "timeouts",
660                  .read_fptr  = ptlrpc_lprocfs_rd_timeouts,
661                  .data       = svc},
662                 {NULL}
663         };
664         static struct file_operations req_history_fops = {
665                 .owner       = THIS_MODULE,
666                 .open        = ptlrpc_lprocfs_svc_req_history_open,
667                 .read        = seq_read,
668                 .llseek      = seq_lseek,
669                 .release     = lprocfs_seq_release,
670         };
671
672         int rc;
673
674         ptlrpc_lprocfs_register(entry, svc->srv_name,
675                                 "stats", &svc->srv_procroot,
676                                 &svc->srv_stats);
677
678         if (svc->srv_procroot == NULL)
679                 return;
680
681         lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
682
683         rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
684                                 0400, &req_history_fops, svc);
685         if (rc)
686                 CWARN("Error adding the req_history file\n");
687 }
688
689 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
690 {
691         ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
692                                 &obddev->obd_svc_procroot,
693                                 &obddev->obd_svc_stats);
694 }
695 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
696
697 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
698 {
699         struct lprocfs_stats *svc_stats;
700         __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
701         int opc = opcode_offset(op);
702
703         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
704         if (svc_stats == NULL || opc <= 0)
705                 return;
706         LASSERT(opc < LUSTRE_MAX_OPCODES);
707         if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
708                 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
709 }
710
711 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
712 {
713         struct lprocfs_stats *svc_stats;
714         int idx;
715
716         if (!req->rq_import)
717                 return;
718         svc_stats = req->rq_import->imp_obd->obd_svc_stats;
719         if (!svc_stats)
720                 return;
721         idx = lustre_msg_get_opc(req->rq_reqmsg);
722         switch (idx) {
723         case OST_READ:
724                 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
725                 break;
726         case OST_WRITE:
727                 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
728                 break;
729         default:
730                 LASSERTF(0, "unsupported opcode %u\n", idx);
731                 break;
732         }
733
734         lprocfs_counter_add(svc_stats, idx, bytes);
735 }
736
737 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
738
739 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
740 {
741         if (svc->srv_procroot != NULL)
742                 lprocfs_remove(&svc->srv_procroot);
743
744         if (svc->srv_stats)
745                 lprocfs_free_stats(&svc->srv_stats);
746 }
747
748 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
749 {
750         if (obd->obd_svc_procroot)
751                 lprocfs_remove(&obd->obd_svc_procroot);
752
753         if (obd->obd_svc_stats)
754                 lprocfs_free_stats(&obd->obd_svc_stats);
755 }
756 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
757
758
759 #define BUFLEN (UUID_MAX + 5)
760
761 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
762                             unsigned long count, void *data)
763 {
764         struct obd_device *obd = data;
765         char              *kbuf;
766         char              *tmpbuf;
767
768         OBD_ALLOC(kbuf, BUFLEN);
769         if (kbuf == NULL)
770                 return -ENOMEM;
771
772         /*
773          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
774          * bytes into kbuf, to ensure that the string is NUL-terminated.
775          * UUID_MAX should include a trailing NUL already.
776          */
777         if (cfs_copy_from_user(kbuf, buffer,
778                                min_t(unsigned long, BUFLEN - 1, count))) {
779                 count = -EFAULT;
780                 goto out;
781         }
782         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
783         /* Kludge code(deadlock situation): the lprocfs lock has been held
784          * since the client is evicted by writting client's
785          * uuid/nid to procfs "evict_client" entry. However,
786          * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
787          * the proc entries under the being destroyed export{}, so I have
788          * to drop the lock at first here.
789          * - jay, jxiong@clusterfs.com */
790         class_incref(obd, __FUNCTION__, cfs_current());
791         LPROCFS_EXIT();
792
793         if (strncmp(tmpbuf, "nid:", 4) == 0)
794                 obd_export_evict_by_nid(obd, tmpbuf + 4);
795         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
796                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
797         else
798                 obd_export_evict_by_uuid(obd, tmpbuf);
799
800         LPROCFS_ENTRY();
801         class_decref(obd, __FUNCTION__, cfs_current());
802
803 out:
804         OBD_FREE(kbuf, BUFLEN);
805         return count;
806 }
807 EXPORT_SYMBOL(lprocfs_wr_evict_client);
808
809 #undef BUFLEN
810
811 int lprocfs_wr_ping(struct file *file, const char *buffer,
812                     unsigned long count, void *data)
813 {
814         struct obd_device     *obd = data;
815         struct ptlrpc_request *req;
816         int                    rc;
817         ENTRY;
818
819         LPROCFS_CLIMP_CHECK(obd);
820         req = ptlrpc_prep_ping(obd->u.cli.cl_import);
821         LPROCFS_CLIMP_EXIT(obd);
822         if (req == NULL)
823                 RETURN(-ENOMEM);
824
825         req->rq_send_state = LUSTRE_IMP_FULL;
826
827         rc = ptlrpc_queue_wait(req);
828
829         ptlrpc_req_finished(req);
830         if (rc >= 0)
831                 RETURN(count);
832         RETURN(rc);
833 }
834 EXPORT_SYMBOL(lprocfs_wr_ping);
835
836 /* Write the connection UUID to this file to attempt to connect to that node.
837  * The connection UUID is a node's primary NID. For example,
838  * "echo connection=192.168.0.1@tcp0::instance > .../import".
839  */
840 int lprocfs_wr_import(struct file *file, const char *buffer,
841                       unsigned long count, void *data)
842 {
843         struct obd_device *obd = data;
844         struct obd_import *imp = obd->u.cli.cl_import;
845         char *kbuf = NULL;
846         char *uuid;
847         char *ptr;
848         int do_reconn = 1;
849         const char prefix[] = "connection=";
850         const int prefix_len = sizeof(prefix) - 1;
851
852         if (count > CFS_PAGE_SIZE - 1 || count <= prefix_len)
853                 return -EINVAL;
854
855         OBD_ALLOC(kbuf, count + 1);
856         if (kbuf == NULL)
857                 return -ENOMEM;
858
859         if (cfs_copy_from_user(kbuf, buffer, count))
860                 GOTO(out, count = -EFAULT);
861
862         kbuf[count] = 0;
863
864         /* only support connection=uuid::instance now */
865         if (strncmp(prefix, kbuf, prefix_len) != 0)
866                 GOTO(out, count = -EINVAL);
867
868         uuid = kbuf + prefix_len;
869         ptr = strstr(uuid, "::");
870         if (ptr) {
871                 __u32 inst;
872                 char *endptr;
873
874                 *ptr = 0;
875                 do_reconn = 0;
876                 ptr += strlen("::");
877                 inst = simple_strtol(ptr, &endptr, 10);
878                 if (*endptr) {
879                         CERROR("config: wrong instance # %s\n", ptr);
880                 } else if (inst != imp->imp_connect_data.ocd_instance) {
881                         CDEBUG(D_INFO, "IR: %s is connecting to an obsoleted "
882                                "target(%u/%u), reconnecting...\n",
883                                imp->imp_obd->obd_name,
884                                imp->imp_connect_data.ocd_instance, inst);
885                         do_reconn = 1;
886                 } else {
887                         CDEBUG(D_INFO, "IR: %s has already been connecting to "
888                                "new target(%u)\n",
889                                imp->imp_obd->obd_name, inst);
890                 }
891         }
892
893         if (do_reconn)
894                 ptlrpc_recover_import(imp, uuid, 1);
895
896 out:
897         OBD_FREE(kbuf, count + 1);
898         return count;
899 }
900 EXPORT_SYMBOL(lprocfs_wr_import);
901
902 int lprocfs_rd_pinger_recov(char *page, char **start, off_t off,
903                             int count, int *eof, void *data)
904 {
905         struct obd_device *obd = data;
906         struct obd_import *imp = obd->u.cli.cl_import;
907         int rc;
908
909         LPROCFS_CLIMP_CHECK(obd);
910         rc = snprintf(page, count, "%d\n", !imp->imp_no_pinger_recover);
911         LPROCFS_CLIMP_EXIT(obd);
912
913         return rc;
914 }
915 EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
916
917 int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
918                       unsigned long count, void *data)
919 {
920         struct obd_device *obd = data;
921         struct client_obd *cli = &obd->u.cli;
922         struct obd_import *imp = cli->cl_import;
923         int rc, val;
924
925         rc = lprocfs_write_helper(buffer, count, &val);
926         if (rc < 0)
927                 return rc;
928
929         if (val != 0 && val != 1)
930                 return -ERANGE;
931
932         LPROCFS_CLIMP_CHECK(obd);
933         cfs_spin_lock(&imp->imp_lock);
934         imp->imp_no_pinger_recover = !val;
935         cfs_spin_unlock(&imp->imp_lock);
936         LPROCFS_CLIMP_EXIT(obd);
937
938         return count;
939
940 }
941 EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
942
943 #endif /* LPROCFS */