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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
[deliverable/linux.git] / drivers / staging / lustre / 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, 2015, Intel Corporation.
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 #include "../include/obd_support.h"
39 #include "../include/obd.h"
40 #include "../include/lprocfs_status.h"
41 #include "../include/lustre/lustre_idl.h"
42 #include "../include/lustre_net.h"
43 #include "../include/obd_class.h"
44 #include "ptlrpc_internal.h"
45
46 static struct ll_rpc_opcode {
47 __u32 opcode;
48 const char *opname;
49 } ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
50 { OST_REPLY, "ost_reply" },
51 { OST_GETATTR, "ost_getattr" },
52 { OST_SETATTR, "ost_setattr" },
53 { OST_READ, "ost_read" },
54 { OST_WRITE, "ost_write" },
55 { OST_CREATE, "ost_create" },
56 { OST_DESTROY, "ost_destroy" },
57 { OST_GET_INFO, "ost_get_info" },
58 { OST_CONNECT, "ost_connect" },
59 { OST_DISCONNECT, "ost_disconnect" },
60 { OST_PUNCH, "ost_punch" },
61 { OST_OPEN, "ost_open" },
62 { OST_CLOSE, "ost_close" },
63 { OST_STATFS, "ost_statfs" },
64 { 14, NULL }, /* formerly OST_SAN_READ */
65 { 15, NULL }, /* formerly OST_SAN_WRITE */
66 { OST_SYNC, "ost_sync" },
67 { OST_SET_INFO, "ost_set_info" },
68 { OST_QUOTACHECK, "ost_quotacheck" },
69 { OST_QUOTACTL, "ost_quotactl" },
70 { OST_QUOTA_ADJUST_QUNIT, "ost_quota_adjust_qunit" },
71 { MDS_GETATTR, "mds_getattr" },
72 { MDS_GETATTR_NAME, "mds_getattr_lock" },
73 { MDS_CLOSE, "mds_close" },
74 { MDS_REINT, "mds_reint" },
75 { MDS_READPAGE, "mds_readpage" },
76 { MDS_CONNECT, "mds_connect" },
77 { MDS_DISCONNECT, "mds_disconnect" },
78 { MDS_GETSTATUS, "mds_getstatus" },
79 { MDS_STATFS, "mds_statfs" },
80 { MDS_PIN, "mds_pin" },
81 { MDS_UNPIN, "mds_unpin" },
82 { MDS_SYNC, "mds_sync" },
83 { MDS_DONE_WRITING, "mds_done_writing" },
84 { MDS_SET_INFO, "mds_set_info" },
85 { MDS_QUOTACHECK, "mds_quotacheck" },
86 { MDS_QUOTACTL, "mds_quotactl" },
87 { MDS_GETXATTR, "mds_getxattr" },
88 { MDS_SETXATTR, "mds_setxattr" },
89 { MDS_WRITEPAGE, "mds_writepage" },
90 { MDS_IS_SUBDIR, "mds_is_subdir" },
91 { MDS_GET_INFO, "mds_get_info" },
92 { MDS_HSM_STATE_GET, "mds_hsm_state_get" },
93 { MDS_HSM_STATE_SET, "mds_hsm_state_set" },
94 { MDS_HSM_ACTION, "mds_hsm_action" },
95 { MDS_HSM_PROGRESS, "mds_hsm_progress" },
96 { MDS_HSM_REQUEST, "mds_hsm_request" },
97 { MDS_HSM_CT_REGISTER, "mds_hsm_ct_register" },
98 { MDS_HSM_CT_UNREGISTER, "mds_hsm_ct_unregister" },
99 { MDS_SWAP_LAYOUTS, "mds_swap_layouts" },
100 { LDLM_ENQUEUE, "ldlm_enqueue" },
101 { LDLM_CONVERT, "ldlm_convert" },
102 { LDLM_CANCEL, "ldlm_cancel" },
103 { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
104 { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
105 { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
106 { LDLM_SET_INFO, "ldlm_set_info" },
107 { MGS_CONNECT, "mgs_connect" },
108 { MGS_DISCONNECT, "mgs_disconnect" },
109 { MGS_EXCEPTION, "mgs_exception" },
110 { MGS_TARGET_REG, "mgs_target_reg" },
111 { MGS_TARGET_DEL, "mgs_target_del" },
112 { MGS_SET_INFO, "mgs_set_info" },
113 { MGS_CONFIG_READ, "mgs_config_read" },
114 { OBD_PING, "obd_ping" },
115 { OBD_LOG_CANCEL, "llog_cancel" },
116 { OBD_QC_CALLBACK, "obd_quota_callback" },
117 { OBD_IDX_READ, "dt_index_read" },
118 { LLOG_ORIGIN_HANDLE_CREATE, "llog_origin_handle_open" },
119 { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
120 { LLOG_ORIGIN_HANDLE_READ_HEADER, "llog_origin_handle_read_header" },
121 { LLOG_ORIGIN_HANDLE_WRITE_REC, "llog_origin_handle_write_rec" },
122 { LLOG_ORIGIN_HANDLE_CLOSE, "llog_origin_handle_close" },
123 { LLOG_ORIGIN_CONNECT, "llog_origin_connect" },
124 { LLOG_CATINFO, "llog_catinfo" },
125 { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
126 { LLOG_ORIGIN_HANDLE_DESTROY, "llog_origin_handle_destroy" },
127 { QUOTA_DQACQ, "quota_acquire" },
128 { QUOTA_DQREL, "quota_release" },
129 { SEQ_QUERY, "seq_query" },
130 { SEC_CTX_INIT, "sec_ctx_init" },
131 { SEC_CTX_INIT_CONT, "sec_ctx_init_cont" },
132 { SEC_CTX_FINI, "sec_ctx_fini" },
133 { FLD_QUERY, "fld_query" },
134 };
135
136 static struct ll_eopcode {
137 __u32 opcode;
138 const char *opname;
139 } ll_eopcode_table[EXTRA_LAST_OPC] = {
140 { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
141 { LDLM_PLAIN_ENQUEUE, "ldlm_plain_enqueue" },
142 { LDLM_EXTENT_ENQUEUE, "ldlm_extent_enqueue" },
143 { LDLM_FLOCK_ENQUEUE, "ldlm_flock_enqueue" },
144 { LDLM_IBITS_ENQUEUE, "ldlm_ibits_enqueue" },
145 { MDS_REINT_SETATTR, "mds_reint_setattr" },
146 { MDS_REINT_CREATE, "mds_reint_create" },
147 { MDS_REINT_LINK, "mds_reint_link" },
148 { MDS_REINT_UNLINK, "mds_reint_unlink" },
149 { MDS_REINT_RENAME, "mds_reint_rename" },
150 { MDS_REINT_OPEN, "mds_reint_open" },
151 { MDS_REINT_SETXATTR, "mds_reint_setxattr" },
152 { BRW_READ_BYTES, "read_bytes" },
153 { BRW_WRITE_BYTES, "write_bytes" },
154 };
155
156 const char *ll_opcode2str(__u32 opcode)
157 {
158 /* When one of the assertions below fail, chances are that:
159 * 1) A new opcode was added in include/lustre/lustre_idl.h,
160 * but is missing from the table above.
161 * or 2) The opcode space was renumbered or rearranged,
162 * and the opcode_offset() function in
163 * ptlrpc_internal.h needs to be modified.
164 */
165 __u32 offset = opcode_offset(opcode);
166
167 LASSERTF(offset < LUSTRE_MAX_OPCODES,
168 "offset %u >= LUSTRE_MAX_OPCODES %u\n",
169 offset, LUSTRE_MAX_OPCODES);
170 LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
171 "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
172 offset, ll_rpc_opcode_table[offset].opcode, opcode);
173 return ll_rpc_opcode_table[offset].opname;
174 }
175
176 static const char *ll_eopcode2str(__u32 opcode)
177 {
178 LASSERT(ll_eopcode_table[opcode].opcode == opcode);
179 return ll_eopcode_table[opcode].opname;
180 }
181
182 static void
183 ptlrpc_ldebugfs_register(struct dentry *root, char *dir,
184 char *name,
185 struct dentry **debugfs_root_ret,
186 struct lprocfs_stats **stats_ret)
187 {
188 struct dentry *svc_debugfs_entry;
189 struct lprocfs_stats *svc_stats;
190 int i, rc;
191 unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
192 LPROCFS_CNTR_STDDEV;
193
194 LASSERT(!*debugfs_root_ret);
195 LASSERT(!*stats_ret);
196
197 svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,
198 0);
199 if (!svc_stats)
200 return;
201
202 if (dir) {
203 svc_debugfs_entry = ldebugfs_register(dir, root, NULL, NULL);
204 if (IS_ERR(svc_debugfs_entry)) {
205 lprocfs_free_stats(&svc_stats);
206 return;
207 }
208 } else {
209 svc_debugfs_entry = root;
210 }
211
212 lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
213 svc_counter_config, "req_waittime", "usec");
214 lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
215 svc_counter_config, "req_qdepth", "reqs");
216 lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
217 svc_counter_config, "req_active", "reqs");
218 lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
219 svc_counter_config, "req_timeout", "sec");
220 lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
221 svc_counter_config, "reqbuf_avail", "bufs");
222 for (i = 0; i < EXTRA_LAST_OPC; i++) {
223 char *units;
224
225 switch (i) {
226 case BRW_WRITE_BYTES:
227 case BRW_READ_BYTES:
228 units = "bytes";
229 break;
230 default:
231 units = "reqs";
232 break;
233 }
234 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
235 svc_counter_config,
236 ll_eopcode2str(i), units);
237 }
238 for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
239 __u32 opcode = ll_rpc_opcode_table[i].opcode;
240
241 lprocfs_counter_init(svc_stats,
242 EXTRA_MAX_OPCODES + i, svc_counter_config,
243 ll_opcode2str(opcode), "usec");
244 }
245
246 rc = ldebugfs_register_stats(svc_debugfs_entry, name, svc_stats);
247 if (rc < 0) {
248 if (dir)
249 ldebugfs_remove(&svc_debugfs_entry);
250 lprocfs_free_stats(&svc_stats);
251 } else {
252 if (dir)
253 *debugfs_root_ret = svc_debugfs_entry;
254 *stats_ret = svc_stats;
255 }
256 }
257
258 static int
259 ptlrpc_lprocfs_req_history_len_seq_show(struct seq_file *m, void *v)
260 {
261 struct ptlrpc_service *svc = m->private;
262 struct ptlrpc_service_part *svcpt;
263 int total = 0;
264 int i;
265
266 ptlrpc_service_for_each_part(svcpt, i, svc)
267 total += svcpt->scp_hist_nrqbds;
268
269 seq_printf(m, "%d\n", total);
270 return 0;
271 }
272
273 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_req_history_len);
274
275 static int
276 ptlrpc_lprocfs_req_history_max_seq_show(struct seq_file *m, void *n)
277 {
278 struct ptlrpc_service *svc = m->private;
279 struct ptlrpc_service_part *svcpt;
280 int total = 0;
281 int i;
282
283 ptlrpc_service_for_each_part(svcpt, i, svc)
284 total += svc->srv_hist_nrqbds_cpt_max;
285
286 seq_printf(m, "%d\n", total);
287 return 0;
288 }
289
290 static ssize_t
291 ptlrpc_lprocfs_req_history_max_seq_write(struct file *file,
292 const char __user *buffer,
293 size_t count, loff_t *off)
294 {
295 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
296 int bufpages;
297 int val;
298 int rc;
299
300 rc = lprocfs_write_helper(buffer, count, &val);
301 if (rc < 0)
302 return rc;
303
304 if (val < 0)
305 return -ERANGE;
306
307 /* This sanity check is more of an insanity check; we can still
308 * hose a kernel by allowing the request history to grow too
309 * far.
310 */
311 bufpages = (svc->srv_buf_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
312 if (val > totalram_pages / (2 * bufpages))
313 return -ERANGE;
314
315 spin_lock(&svc->srv_lock);
316
317 if (val == 0)
318 svc->srv_hist_nrqbds_cpt_max = 0;
319 else
320 svc->srv_hist_nrqbds_cpt_max = max(1, (val / svc->srv_ncpts));
321
322 spin_unlock(&svc->srv_lock);
323
324 return count;
325 }
326
327 LPROC_SEQ_FOPS(ptlrpc_lprocfs_req_history_max);
328
329 static ssize_t threads_min_show(struct kobject *kobj, struct attribute *attr,
330 char *buf)
331 {
332 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
333 srv_kobj);
334
335 return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_init * svc->srv_ncpts);
336 }
337
338 static ssize_t threads_min_store(struct kobject *kobj, struct attribute *attr,
339 const char *buffer, size_t count)
340 {
341 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
342 srv_kobj);
343 unsigned long val;
344 int rc = kstrtoul(buffer, 10, &val);
345
346 if (rc < 0)
347 return rc;
348
349 if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
350 return -ERANGE;
351
352 spin_lock(&svc->srv_lock);
353 if (val > svc->srv_nthrs_cpt_limit * svc->srv_ncpts) {
354 spin_unlock(&svc->srv_lock);
355 return -ERANGE;
356 }
357
358 svc->srv_nthrs_cpt_init = val / svc->srv_ncpts;
359
360 spin_unlock(&svc->srv_lock);
361
362 return count;
363 }
364 LUSTRE_RW_ATTR(threads_min);
365
366 static ssize_t threads_started_show(struct kobject *kobj,
367 struct attribute *attr,
368 char *buf)
369 {
370 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
371 srv_kobj);
372 struct ptlrpc_service_part *svcpt;
373 int total = 0;
374 int i;
375
376 ptlrpc_service_for_each_part(svcpt, i, svc)
377 total += svcpt->scp_nthrs_running;
378
379 return sprintf(buf, "%d\n", total);
380 }
381 LUSTRE_RO_ATTR(threads_started);
382
383 static ssize_t threads_max_show(struct kobject *kobj, struct attribute *attr,
384 char *buf)
385 {
386 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
387 srv_kobj);
388
389 return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
390 }
391
392 static ssize_t threads_max_store(struct kobject *kobj, struct attribute *attr,
393 const char *buffer, size_t count)
394 {
395 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
396 srv_kobj);
397 unsigned long val;
398 int rc = kstrtoul(buffer, 10, &val);
399
400 if (rc < 0)
401 return rc;
402
403 if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
404 return -ERANGE;
405
406 spin_lock(&svc->srv_lock);
407 if (val < svc->srv_nthrs_cpt_init * svc->srv_ncpts) {
408 spin_unlock(&svc->srv_lock);
409 return -ERANGE;
410 }
411
412 svc->srv_nthrs_cpt_limit = val / svc->srv_ncpts;
413
414 spin_unlock(&svc->srv_lock);
415
416 return count;
417 }
418 LUSTRE_RW_ATTR(threads_max);
419
420 /**
421 * \addtogoup nrs
422 * @{
423 */
424
425 /**
426 * Translates \e ptlrpc_nrs_pol_state values to human-readable strings.
427 *
428 * \param[in] state The policy state
429 */
430 static const char *nrs_state2str(enum ptlrpc_nrs_pol_state state)
431 {
432 switch (state) {
433 default:
434 LBUG();
435 case NRS_POL_STATE_INVALID:
436 return "invalid";
437 case NRS_POL_STATE_STOPPED:
438 return "stopped";
439 case NRS_POL_STATE_STOPPING:
440 return "stopping";
441 case NRS_POL_STATE_STARTING:
442 return "starting";
443 case NRS_POL_STATE_STARTED:
444 return "started";
445 }
446 }
447
448 /**
449 * Obtains status information for \a policy.
450 *
451 * Information is copied in \a info.
452 *
453 * \param[in] policy The policy
454 * \param[out] info Holds returned status information
455 */
456 static void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
457 struct ptlrpc_nrs_pol_info *info)
458 {
459 assert_spin_locked(&policy->pol_nrs->nrs_lock);
460
461 memcpy(info->pi_name, policy->pol_desc->pd_name, NRS_POL_NAME_MAX);
462
463 info->pi_fallback = !!(policy->pol_flags & PTLRPC_NRS_FL_FALLBACK);
464 info->pi_state = policy->pol_state;
465 /**
466 * XXX: These are accessed without holding
467 * ptlrpc_service_part::scp_req_lock.
468 */
469 info->pi_req_queued = policy->pol_req_queued;
470 info->pi_req_started = policy->pol_req_started;
471 }
472
473 /**
474 * Reads and prints policy status information for all policies of a PTLRPC
475 * service.
476 */
477 static int ptlrpc_lprocfs_nrs_seq_show(struct seq_file *m, void *n)
478 {
479 struct ptlrpc_service *svc = m->private;
480 struct ptlrpc_service_part *svcpt;
481 struct ptlrpc_nrs *nrs;
482 struct ptlrpc_nrs_policy *policy;
483 struct ptlrpc_nrs_pol_info *infos;
484 struct ptlrpc_nrs_pol_info tmp;
485 unsigned num_pols;
486 unsigned pol_idx = 0;
487 bool hp = false;
488 int i;
489 int rc = 0;
490
491 /**
492 * Serialize NRS core lprocfs operations with policy registration/
493 * unregistration.
494 */
495 mutex_lock(&nrs_core.nrs_mutex);
496
497 /**
498 * Use the first service partition's regular NRS head in order to obtain
499 * the number of policies registered with NRS heads of this service. All
500 * service partitions will have the same number of policies.
501 */
502 nrs = nrs_svcpt2nrs(svc->srv_parts[0], false);
503
504 spin_lock(&nrs->nrs_lock);
505 num_pols = svc->srv_parts[0]->scp_nrs_reg.nrs_num_pols;
506 spin_unlock(&nrs->nrs_lock);
507
508 infos = kcalloc(num_pols, sizeof(*infos), GFP_NOFS);
509 if (!infos) {
510 rc = -ENOMEM;
511 goto unlock;
512 }
513 again:
514
515 ptlrpc_service_for_each_part(svcpt, i, svc) {
516 nrs = nrs_svcpt2nrs(svcpt, hp);
517 spin_lock(&nrs->nrs_lock);
518
519 pol_idx = 0;
520
521 list_for_each_entry(policy, &nrs->nrs_policy_list, pol_list) {
522 LASSERT(pol_idx < num_pols);
523
524 nrs_policy_get_info_locked(policy, &tmp);
525 /**
526 * Copy values when handling the first service
527 * partition.
528 */
529 if (i == 0) {
530 memcpy(infos[pol_idx].pi_name, tmp.pi_name,
531 NRS_POL_NAME_MAX);
532 memcpy(&infos[pol_idx].pi_state, &tmp.pi_state,
533 sizeof(tmp.pi_state));
534 infos[pol_idx].pi_fallback = tmp.pi_fallback;
535 /**
536 * For the rest of the service partitions
537 * sanity-check the values we get.
538 */
539 } else {
540 LASSERT(strncmp(infos[pol_idx].pi_name,
541 tmp.pi_name,
542 NRS_POL_NAME_MAX) == 0);
543 /**
544 * Not asserting ptlrpc_nrs_pol_info::pi_state,
545 * because it may be different between
546 * instances of the same policy in different
547 * service partitions.
548 */
549 LASSERT(infos[pol_idx].pi_fallback ==
550 tmp.pi_fallback);
551 }
552
553 infos[pol_idx].pi_req_queued += tmp.pi_req_queued;
554 infos[pol_idx].pi_req_started += tmp.pi_req_started;
555
556 pol_idx++;
557 }
558 spin_unlock(&nrs->nrs_lock);
559 }
560
561 /**
562 * Policy status information output is in YAML format.
563 * For example:
564 *
565 * regular_requests:
566 * - name: fifo
567 * state: started
568 * fallback: yes
569 * queued: 0
570 * active: 0
571 *
572 * - name: crrn
573 * state: started
574 * fallback: no
575 * queued: 2015
576 * active: 384
577 *
578 * high_priority_requests:
579 * - name: fifo
580 * state: started
581 * fallback: yes
582 * queued: 0
583 * active: 2
584 *
585 * - name: crrn
586 * state: stopped
587 * fallback: no
588 * queued: 0
589 * active: 0
590 */
591 seq_printf(m, "%s\n",
592 !hp ? "\nregular_requests:" : "high_priority_requests:");
593
594 for (pol_idx = 0; pol_idx < num_pols; pol_idx++) {
595 seq_printf(m, " - name: %s\n"
596 " state: %s\n"
597 " fallback: %s\n"
598 " queued: %-20d\n"
599 " active: %-20d\n\n",
600 infos[pol_idx].pi_name,
601 nrs_state2str(infos[pol_idx].pi_state),
602 infos[pol_idx].pi_fallback ? "yes" : "no",
603 (int)infos[pol_idx].pi_req_queued,
604 (int)infos[pol_idx].pi_req_started);
605 }
606
607 if (!hp && nrs_svc_has_hp(svc)) {
608 memset(infos, 0, num_pols * sizeof(*infos));
609
610 /**
611 * Redo the processing for the service's HP NRS heads' policies.
612 */
613 hp = true;
614 goto again;
615 }
616
617 kfree(infos);
618 unlock:
619 mutex_unlock(&nrs_core.nrs_mutex);
620
621 return rc;
622 }
623
624 /**
625 * The longest valid command string is the maximum policy name size, plus the
626 * length of the " reg" substring
627 */
628 #define LPROCFS_NRS_WR_MAX_CMD (NRS_POL_NAME_MAX + sizeof(" reg") - 1)
629
630 /**
631 * Starts and stops a given policy on a PTLRPC service.
632 *
633 * Commands consist of the policy name, followed by an optional [reg|hp] token;
634 * if the optional token is omitted, the operation is performed on both the
635 * regular and high-priority (if the service has one) NRS head.
636 */
637 static ssize_t ptlrpc_lprocfs_nrs_seq_write(struct file *file,
638 const char __user *buffer,
639 size_t count, loff_t *off)
640 {
641 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
642 enum ptlrpc_nrs_queue_type queue = PTLRPC_NRS_QUEUE_BOTH;
643 char *cmd;
644 char *cmd_copy = NULL;
645 char *token;
646 int rc = 0;
647
648 if (count >= LPROCFS_NRS_WR_MAX_CMD)
649 return -EINVAL;
650
651 cmd = kzalloc(LPROCFS_NRS_WR_MAX_CMD, GFP_NOFS);
652 if (!cmd)
653 return -ENOMEM;
654 /**
655 * strsep() modifies its argument, so keep a copy
656 */
657 cmd_copy = cmd;
658
659 if (copy_from_user(cmd, buffer, count)) {
660 rc = -EFAULT;
661 goto out;
662 }
663
664 cmd[count] = '\0';
665
666 token = strsep(&cmd, " ");
667
668 if (strlen(token) > NRS_POL_NAME_MAX - 1) {
669 rc = -EINVAL;
670 goto out;
671 }
672
673 /**
674 * No [reg|hp] token has been specified
675 */
676 if (!cmd)
677 goto default_queue;
678
679 /**
680 * The second token is either NULL, or an optional [reg|hp] string
681 */
682 if (strcmp(cmd, "reg") == 0)
683 queue = PTLRPC_NRS_QUEUE_REG;
684 else if (strcmp(cmd, "hp") == 0)
685 queue = PTLRPC_NRS_QUEUE_HP;
686 else {
687 rc = -EINVAL;
688 goto out;
689 }
690
691 default_queue:
692
693 if (queue == PTLRPC_NRS_QUEUE_HP && !nrs_svc_has_hp(svc)) {
694 rc = -ENODEV;
695 goto out;
696 } else if (queue == PTLRPC_NRS_QUEUE_BOTH && !nrs_svc_has_hp(svc))
697 queue = PTLRPC_NRS_QUEUE_REG;
698
699 /**
700 * Serialize NRS core lprocfs operations with policy registration/
701 * unregistration.
702 */
703 mutex_lock(&nrs_core.nrs_mutex);
704
705 rc = ptlrpc_nrs_policy_control(svc, queue, token, PTLRPC_NRS_CTL_START,
706 false, NULL);
707
708 mutex_unlock(&nrs_core.nrs_mutex);
709 out:
710 kfree(cmd_copy);
711
712 return rc < 0 ? rc : count;
713 }
714
715 LPROC_SEQ_FOPS(ptlrpc_lprocfs_nrs);
716
717 /** @} nrs */
718
719 struct ptlrpc_srh_iterator {
720 int srhi_idx;
721 __u64 srhi_seq;
722 struct ptlrpc_request *srhi_req;
723 };
724
725 static int
726 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
727 struct ptlrpc_srh_iterator *srhi,
728 __u64 seq)
729 {
730 struct list_head *e;
731 struct ptlrpc_request *req;
732
733 if (srhi->srhi_req && srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
734 srhi->srhi_seq <= seq) {
735 /* If srhi_req was set previously, hasn't been culled and
736 * we're searching for a seq on or after it (i.e. more
737 * recent), search from it onwards.
738 * Since the service history is LRU (i.e. culled reqs will
739 * be near the head), we shouldn't have to do long
740 * re-scans
741 */
742 LASSERTF(srhi->srhi_seq == srhi->srhi_req->rq_history_seq,
743 "%s:%d: seek seq %llu, request seq %llu\n",
744 svcpt->scp_service->srv_name, svcpt->scp_cpt,
745 srhi->srhi_seq, srhi->srhi_req->rq_history_seq);
746 LASSERTF(!list_empty(&svcpt->scp_hist_reqs),
747 "%s:%d: seek offset %llu, request seq %llu, last culled %llu\n",
748 svcpt->scp_service->srv_name, svcpt->scp_cpt,
749 seq, srhi->srhi_seq, svcpt->scp_hist_seq_culled);
750 e = &srhi->srhi_req->rq_history_list;
751 } else {
752 /* search from start */
753 e = svcpt->scp_hist_reqs.next;
754 }
755
756 while (e != &svcpt->scp_hist_reqs) {
757 req = list_entry(e, struct ptlrpc_request, rq_history_list);
758
759 if (req->rq_history_seq >= seq) {
760 srhi->srhi_seq = req->rq_history_seq;
761 srhi->srhi_req = req;
762 return 0;
763 }
764 e = e->next;
765 }
766
767 return -ENOENT;
768 }
769
770 /*
771 * ptlrpc history sequence is used as "position" of seq_file, in some case,
772 * seq_read() will increase "position" to indicate reading the next
773 * element, however, low bits of history sequence are reserved for CPT id
774 * (check the details from comments before ptlrpc_req_add_history), which
775 * means seq_read() might change CPT id of history sequence and never
776 * finish reading of requests on a CPT. To make it work, we have to shift
777 * CPT id to high bits and timestamp to low bits, so seq_read() will only
778 * increase timestamp which can correctly indicate the next position.
779 */
780
781 /* convert seq_file pos to cpt */
782 #define PTLRPC_REQ_POS2CPT(svc, pos) \
783 ((svc)->srv_cpt_bits == 0 ? 0 : \
784 (__u64)(pos) >> (64 - (svc)->srv_cpt_bits))
785
786 /* make up seq_file pos from cpt */
787 #define PTLRPC_REQ_CPT2POS(svc, cpt) \
788 ((svc)->srv_cpt_bits == 0 ? 0 : \
789 (cpt) << (64 - (svc)->srv_cpt_bits))
790
791 /* convert sequence to position */
792 #define PTLRPC_REQ_SEQ2POS(svc, seq) \
793 ((svc)->srv_cpt_bits == 0 ? (seq) : \
794 ((seq) >> (svc)->srv_cpt_bits) | \
795 ((seq) << (64 - (svc)->srv_cpt_bits)))
796
797 /* convert position to sequence */
798 #define PTLRPC_REQ_POS2SEQ(svc, pos) \
799 ((svc)->srv_cpt_bits == 0 ? (pos) : \
800 ((__u64)(pos) << (svc)->srv_cpt_bits) | \
801 ((__u64)(pos) >> (64 - (svc)->srv_cpt_bits)))
802
803 static void *
804 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
805 {
806 struct ptlrpc_service *svc = s->private;
807 struct ptlrpc_service_part *svcpt;
808 struct ptlrpc_srh_iterator *srhi;
809 unsigned int cpt;
810 int rc;
811 int i;
812
813 if (sizeof(loff_t) != sizeof(__u64)) { /* can't support */
814 CWARN("Failed to read request history because size of loff_t %d can't match size of u64\n",
815 (int)sizeof(loff_t));
816 return NULL;
817 }
818
819 srhi = kzalloc(sizeof(*srhi), GFP_NOFS);
820 if (!srhi)
821 return NULL;
822
823 srhi->srhi_seq = 0;
824 srhi->srhi_req = NULL;
825
826 cpt = PTLRPC_REQ_POS2CPT(svc, *pos);
827
828 ptlrpc_service_for_each_part(svcpt, i, svc) {
829 if (i < cpt) /* skip */
830 continue;
831 if (i > cpt) /* make up the lowest position for this CPT */
832 *pos = PTLRPC_REQ_CPT2POS(svc, i);
833
834 spin_lock(&svcpt->scp_lock);
835 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi,
836 PTLRPC_REQ_POS2SEQ(svc, *pos));
837 spin_unlock(&svcpt->scp_lock);
838 if (rc == 0) {
839 *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
840 srhi->srhi_idx = i;
841 return srhi;
842 }
843 }
844
845 kfree(srhi);
846 return NULL;
847 }
848
849 static void
850 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
851 {
852 struct ptlrpc_srh_iterator *srhi = iter;
853
854 kfree(srhi);
855 }
856
857 static void *
858 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
859 void *iter, loff_t *pos)
860 {
861 struct ptlrpc_service *svc = s->private;
862 struct ptlrpc_srh_iterator *srhi = iter;
863 struct ptlrpc_service_part *svcpt;
864 __u64 seq;
865 int rc;
866 int i;
867
868 for (i = srhi->srhi_idx; i < svc->srv_ncpts; i++) {
869 svcpt = svc->srv_parts[i];
870
871 if (i > srhi->srhi_idx) { /* reset iterator for a new CPT */
872 srhi->srhi_req = NULL;
873 seq = srhi->srhi_seq = 0;
874 } else { /* the next sequence */
875 seq = srhi->srhi_seq + (1 << svc->srv_cpt_bits);
876 }
877
878 spin_lock(&svcpt->scp_lock);
879 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, seq);
880 spin_unlock(&svcpt->scp_lock);
881 if (rc == 0) {
882 *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
883 srhi->srhi_idx = i;
884 return srhi;
885 }
886 }
887
888 kfree(srhi);
889 return NULL;
890 }
891
892 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
893 {
894 struct ptlrpc_service *svc = s->private;
895 struct ptlrpc_srh_iterator *srhi = iter;
896 struct ptlrpc_service_part *svcpt;
897 struct ptlrpc_request *req;
898 int rc;
899
900 LASSERT(srhi->srhi_idx < svc->srv_ncpts);
901
902 svcpt = svc->srv_parts[srhi->srhi_idx];
903
904 spin_lock(&svcpt->scp_lock);
905
906 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
907
908 if (rc == 0) {
909 char nidstr[LNET_NIDSTR_SIZE];
910
911 req = srhi->srhi_req;
912
913 libcfs_nid2str_r(req->rq_self, nidstr, sizeof(nidstr));
914 /* Print common req fields.
915 * CAVEAT EMPTOR: we're racing with the service handler
916 * here. The request could contain any old crap, so you
917 * must be just as careful as the service's request
918 * parser. Currently I only print stuff here I know is OK
919 * to look at coz it was set up in request_in_callback()!!!
920 */
921 seq_printf(s, "%lld:%s:%s:x%llu:%d:%s:%lld:%lds(%+lds) ",
922 req->rq_history_seq, nidstr,
923 libcfs_id2str(req->rq_peer), req->rq_xid,
924 req->rq_reqlen, ptlrpc_rqphase2str(req),
925 (s64)req->rq_arrival_time.tv_sec,
926 (long)(req->rq_sent - req->rq_arrival_time.tv_sec),
927 (long)(req->rq_sent - req->rq_deadline));
928 if (!svc->srv_ops.so_req_printer)
929 seq_putc(s, '\n');
930 else
931 svc->srv_ops.so_req_printer(s, srhi->srhi_req);
932 }
933
934 spin_unlock(&svcpt->scp_lock);
935 return rc;
936 }
937
938 static int
939 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
940 {
941 static struct seq_operations sops = {
942 .start = ptlrpc_lprocfs_svc_req_history_start,
943 .stop = ptlrpc_lprocfs_svc_req_history_stop,
944 .next = ptlrpc_lprocfs_svc_req_history_next,
945 .show = ptlrpc_lprocfs_svc_req_history_show,
946 };
947 struct seq_file *seqf;
948 int rc;
949
950 rc = seq_open(file, &sops);
951 if (rc)
952 return rc;
953
954 seqf = file->private_data;
955 seqf->private = inode->i_private;
956 return 0;
957 }
958
959 /* See also lprocfs_rd_timeouts */
960 static int ptlrpc_lprocfs_timeouts_seq_show(struct seq_file *m, void *n)
961 {
962 struct ptlrpc_service *svc = m->private;
963 struct ptlrpc_service_part *svcpt;
964 struct dhms ts;
965 time64_t worstt;
966 unsigned int cur;
967 unsigned int worst;
968 int i;
969
970 if (AT_OFF) {
971 seq_printf(m, "adaptive timeouts off, using obd_timeout %u\n",
972 obd_timeout);
973 return 0;
974 }
975
976 ptlrpc_service_for_each_part(svcpt, i, svc) {
977 cur = at_get(&svcpt->scp_at_estimate);
978 worst = svcpt->scp_at_estimate.at_worst_ever;
979 worstt = svcpt->scp_at_estimate.at_worst_time;
980 s2dhms(&ts, ktime_get_real_seconds() - worstt);
981
982 seq_printf(m, "%10s : cur %3u worst %3u (at %lld, "
983 DHMS_FMT " ago) ", "service",
984 cur, worst, (s64)worstt, DHMS_VARS(&ts));
985
986 lprocfs_at_hist_helper(m, &svcpt->scp_at_estimate);
987 }
988
989 return 0;
990 }
991
992 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_timeouts);
993
994 static ssize_t high_priority_ratio_show(struct kobject *kobj,
995 struct attribute *attr,
996 char *buf)
997 {
998 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
999 srv_kobj);
1000 return sprintf(buf, "%d\n", svc->srv_hpreq_ratio);
1001 }
1002
1003 static ssize_t high_priority_ratio_store(struct kobject *kobj,
1004 struct attribute *attr,
1005 const char *buffer,
1006 size_t count)
1007 {
1008 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
1009 srv_kobj);
1010 int rc;
1011 int val;
1012
1013 rc = kstrtoint(buffer, 10, &val);
1014 if (rc < 0)
1015 return rc;
1016
1017 if (val < 0)
1018 return -ERANGE;
1019
1020 spin_lock(&svc->srv_lock);
1021 svc->srv_hpreq_ratio = val;
1022 spin_unlock(&svc->srv_lock);
1023
1024 return count;
1025 }
1026 LUSTRE_RW_ATTR(high_priority_ratio);
1027
1028 static struct attribute *ptlrpc_svc_attrs[] = {
1029 &lustre_attr_threads_min.attr,
1030 &lustre_attr_threads_started.attr,
1031 &lustre_attr_threads_max.attr,
1032 &lustre_attr_high_priority_ratio.attr,
1033 NULL,
1034 };
1035
1036 static void ptlrpc_sysfs_svc_release(struct kobject *kobj)
1037 {
1038 struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
1039 srv_kobj);
1040
1041 complete(&svc->srv_kobj_unregister);
1042 }
1043
1044 static struct kobj_type ptlrpc_svc_ktype = {
1045 .default_attrs = ptlrpc_svc_attrs,
1046 .sysfs_ops = &lustre_sysfs_ops,
1047 .release = ptlrpc_sysfs_svc_release,
1048 };
1049
1050 void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc)
1051 {
1052 /* Let's see if we had a chance at initialization first */
1053 if (svc->srv_kobj.kset) {
1054 kobject_put(&svc->srv_kobj);
1055 wait_for_completion(&svc->srv_kobj_unregister);
1056 }
1057 }
1058
1059 int ptlrpc_sysfs_register_service(struct kset *parent,
1060 struct ptlrpc_service *svc)
1061 {
1062 int rc;
1063
1064 svc->srv_kobj.kset = parent;
1065 init_completion(&svc->srv_kobj_unregister);
1066 rc = kobject_init_and_add(&svc->srv_kobj, &ptlrpc_svc_ktype, NULL,
1067 "%s", svc->srv_name);
1068
1069 return rc;
1070 }
1071
1072 void ptlrpc_ldebugfs_register_service(struct dentry *entry,
1073 struct ptlrpc_service *svc)
1074 {
1075 struct lprocfs_vars lproc_vars[] = {
1076 {.name = "req_buffer_history_len",
1077 .fops = &ptlrpc_lprocfs_req_history_len_fops,
1078 .data = svc},
1079 {.name = "req_buffer_history_max",
1080 .fops = &ptlrpc_lprocfs_req_history_max_fops,
1081 .data = svc},
1082 {.name = "timeouts",
1083 .fops = &ptlrpc_lprocfs_timeouts_fops,
1084 .data = svc},
1085 {.name = "nrs_policies",
1086 .fops = &ptlrpc_lprocfs_nrs_fops,
1087 .data = svc},
1088 {NULL}
1089 };
1090 static const struct file_operations req_history_fops = {
1091 .owner = THIS_MODULE,
1092 .open = ptlrpc_lprocfs_svc_req_history_open,
1093 .read = seq_read,
1094 .llseek = seq_lseek,
1095 .release = lprocfs_seq_release,
1096 };
1097
1098 int rc;
1099
1100 ptlrpc_ldebugfs_register(entry, svc->srv_name,
1101 "stats", &svc->srv_debugfs_entry,
1102 &svc->srv_stats);
1103
1104 if (IS_ERR_OR_NULL(svc->srv_debugfs_entry))
1105 return;
1106
1107 ldebugfs_add_vars(svc->srv_debugfs_entry, lproc_vars, NULL);
1108
1109 rc = ldebugfs_seq_create(svc->srv_debugfs_entry, "req_history",
1110 0400, &req_history_fops, svc);
1111 if (rc)
1112 CWARN("Error adding the req_history file\n");
1113 }
1114
1115 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
1116 {
1117 ptlrpc_ldebugfs_register(obddev->obd_debugfs_entry, NULL, "stats",
1118 &obddev->obd_svc_debugfs_entry,
1119 &obddev->obd_svc_stats);
1120 }
1121 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
1122
1123 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
1124 {
1125 struct lprocfs_stats *svc_stats;
1126 __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
1127 int opc = opcode_offset(op);
1128
1129 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
1130 if (!svc_stats || opc <= 0)
1131 return;
1132 LASSERT(opc < LUSTRE_MAX_OPCODES);
1133 if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
1134 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
1135 }
1136
1137 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
1138 {
1139 struct lprocfs_stats *svc_stats;
1140 int idx;
1141
1142 if (!req->rq_import)
1143 return;
1144 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
1145 if (!svc_stats)
1146 return;
1147 idx = lustre_msg_get_opc(req->rq_reqmsg);
1148 switch (idx) {
1149 case OST_READ:
1150 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
1151 break;
1152 case OST_WRITE:
1153 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
1154 break;
1155 default:
1156 LASSERTF(0, "unsupported opcode %u\n", idx);
1157 break;
1158 }
1159
1160 lprocfs_counter_add(svc_stats, idx, bytes);
1161 }
1162
1163 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
1164
1165 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
1166 {
1167 if (!IS_ERR_OR_NULL(svc->srv_debugfs_entry))
1168 ldebugfs_remove(&svc->srv_debugfs_entry);
1169
1170 if (svc->srv_stats)
1171 lprocfs_free_stats(&svc->srv_stats);
1172 }
1173
1174 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
1175 {
1176 if (!IS_ERR_OR_NULL(obd->obd_svc_debugfs_entry))
1177 ldebugfs_remove(&obd->obd_svc_debugfs_entry);
1178
1179 if (obd->obd_svc_stats)
1180 lprocfs_free_stats(&obd->obd_svc_stats);
1181 }
1182 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
1183
1184 #undef BUFLEN
1185
1186 int lprocfs_wr_ping(struct file *file, const char __user *buffer,
1187 size_t count, loff_t *off)
1188 {
1189 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1190 struct ptlrpc_request *req;
1191 int rc;
1192
1193 rc = lprocfs_climp_check(obd);
1194 if (rc)
1195 return rc;
1196
1197 req = ptlrpc_prep_ping(obd->u.cli.cl_import);
1198 up_read(&obd->u.cli.cl_sem);
1199 if (!req)
1200 return -ENOMEM;
1201
1202 req->rq_send_state = LUSTRE_IMP_FULL;
1203
1204 rc = ptlrpc_queue_wait(req);
1205
1206 ptlrpc_req_finished(req);
1207 if (rc >= 0)
1208 return count;
1209 return rc;
1210 }
1211 EXPORT_SYMBOL(lprocfs_wr_ping);
1212
1213 /* Write the connection UUID to this file to attempt to connect to that node.
1214 * The connection UUID is a node's primary NID. For example,
1215 * "echo connection=192.168.0.1@tcp0::instance > .../import".
1216 */
1217 int lprocfs_wr_import(struct file *file, const char __user *buffer,
1218 size_t count, loff_t *off)
1219 {
1220 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1221 struct obd_import *imp = obd->u.cli.cl_import;
1222 char *kbuf = NULL;
1223 char *uuid;
1224 char *ptr;
1225 int do_reconn = 1;
1226 const char prefix[] = "connection=";
1227 const int prefix_len = sizeof(prefix) - 1;
1228
1229 if (count > PAGE_SIZE - 1 || count <= prefix_len)
1230 return -EINVAL;
1231
1232 kbuf = kzalloc(count + 1, GFP_NOFS);
1233 if (!kbuf)
1234 return -ENOMEM;
1235
1236 if (copy_from_user(kbuf, buffer, count)) {
1237 count = -EFAULT;
1238 goto out;
1239 }
1240
1241 kbuf[count] = 0;
1242
1243 /* only support connection=uuid::instance now */
1244 if (strncmp(prefix, kbuf, prefix_len) != 0) {
1245 count = -EINVAL;
1246 goto out;
1247 }
1248
1249 uuid = kbuf + prefix_len;
1250 ptr = strstr(uuid, "::");
1251 if (ptr) {
1252 __u32 inst;
1253 char *endptr;
1254
1255 *ptr = 0;
1256 do_reconn = 0;
1257 ptr += strlen("::");
1258 inst = simple_strtoul(ptr, &endptr, 10);
1259 if (*endptr) {
1260 CERROR("config: wrong instance # %s\n", ptr);
1261 } else if (inst != imp->imp_connect_data.ocd_instance) {
1262 CDEBUG(D_INFO, "IR: %s is connecting to an obsoleted target(%u/%u), reconnecting...\n",
1263 imp->imp_obd->obd_name,
1264 imp->imp_connect_data.ocd_instance, inst);
1265 do_reconn = 1;
1266 } else {
1267 CDEBUG(D_INFO, "IR: %s has already been connecting to new target(%u)\n",
1268 imp->imp_obd->obd_name, inst);
1269 }
1270 }
1271
1272 if (do_reconn)
1273 ptlrpc_recover_import(imp, uuid, 1);
1274
1275 out:
1276 kfree(kbuf);
1277 return count;
1278 }
1279 EXPORT_SYMBOL(lprocfs_wr_import);
1280
1281 int lprocfs_rd_pinger_recov(struct seq_file *m, void *n)
1282 {
1283 struct obd_device *obd = m->private;
1284 struct obd_import *imp = obd->u.cli.cl_import;
1285 int rc;
1286
1287 rc = lprocfs_climp_check(obd);
1288 if (rc)
1289 return rc;
1290
1291 seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
1292 up_read(&obd->u.cli.cl_sem);
1293
1294 return 0;
1295 }
1296 EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
1297
1298 int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
1299 size_t count, loff_t *off)
1300 {
1301 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1302 struct client_obd *cli = &obd->u.cli;
1303 struct obd_import *imp = cli->cl_import;
1304 int rc, val;
1305
1306 rc = lprocfs_write_helper(buffer, count, &val);
1307 if (rc < 0)
1308 return rc;
1309
1310 if (val != 0 && val != 1)
1311 return -ERANGE;
1312
1313 rc = lprocfs_climp_check(obd);
1314 if (rc)
1315 return rc;
1316
1317 spin_lock(&imp->imp_lock);
1318 imp->imp_no_pinger_recover = !val;
1319 spin_unlock(&imp->imp_lock);
1320 up_read(&obd->u.cli.cl_sem);
1321
1322 return count;
1323
1324 }
1325 EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
Linux kernel - Deliverables
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