4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 #define DEBUG_SUBSYSTEM S_CLASS
39 #include "../include/obd_support.h"
40 #include "../include/obd.h"
41 #include "../include/lprocfs_status.h"
42 #include "../include/lustre/lustre_idl.h"
43 #include "../include/lustre_net.h"
44 #include "../include/obd_class.h"
45 #include "ptlrpc_internal.h"
48 struct ll_rpc_opcode {
51 } ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
52 { OST_REPLY, "ost_reply" },
53 { OST_GETATTR, "ost_getattr" },
54 { OST_SETATTR, "ost_setattr" },
55 { OST_READ, "ost_read" },
56 { OST_WRITE, "ost_write" },
57 { OST_CREATE , "ost_create" },
58 { OST_DESTROY, "ost_destroy" },
59 { OST_GET_INFO, "ost_get_info" },
60 { OST_CONNECT, "ost_connect" },
61 { OST_DISCONNECT, "ost_disconnect" },
62 { OST_PUNCH, "ost_punch" },
63 { OST_OPEN, "ost_open" },
64 { OST_CLOSE, "ost_close" },
65 { OST_STATFS, "ost_statfs" },
66 { 14, NULL }, /* formerly OST_SAN_READ */
67 { 15, NULL }, /* formerly OST_SAN_WRITE */
68 { OST_SYNC, "ost_sync" },
69 { OST_SET_INFO, "ost_set_info" },
70 { OST_QUOTACHECK, "ost_quotacheck" },
71 { OST_QUOTACTL, "ost_quotactl" },
72 { OST_QUOTA_ADJUST_QUNIT, "ost_quota_adjust_qunit" },
73 { MDS_GETATTR, "mds_getattr" },
74 { MDS_GETATTR_NAME, "mds_getattr_lock" },
75 { MDS_CLOSE, "mds_close" },
76 { MDS_REINT, "mds_reint" },
77 { MDS_READPAGE, "mds_readpage" },
78 { MDS_CONNECT, "mds_connect" },
79 { MDS_DISCONNECT, "mds_disconnect" },
80 { MDS_GETSTATUS, "mds_getstatus" },
81 { MDS_STATFS, "mds_statfs" },
82 { MDS_PIN, "mds_pin" },
83 { MDS_UNPIN, "mds_unpin" },
84 { MDS_SYNC, "mds_sync" },
85 { MDS_DONE_WRITING, "mds_done_writing" },
86 { MDS_SET_INFO, "mds_set_info" },
87 { MDS_QUOTACHECK, "mds_quotacheck" },
88 { MDS_QUOTACTL, "mds_quotactl" },
89 { MDS_GETXATTR, "mds_getxattr" },
90 { MDS_SETXATTR, "mds_setxattr" },
91 { MDS_WRITEPAGE, "mds_writepage" },
92 { MDS_IS_SUBDIR, "mds_is_subdir" },
93 { MDS_GET_INFO, "mds_get_info" },
94 { MDS_HSM_STATE_GET, "mds_hsm_state_get" },
95 { MDS_HSM_STATE_SET, "mds_hsm_state_set" },
96 { MDS_HSM_ACTION, "mds_hsm_action" },
97 { MDS_HSM_PROGRESS, "mds_hsm_progress" },
98 { MDS_HSM_REQUEST, "mds_hsm_request" },
99 { MDS_HSM_CT_REGISTER, "mds_hsm_ct_register" },
100 { MDS_HSM_CT_UNREGISTER, "mds_hsm_ct_unregister" },
101 { MDS_SWAP_LAYOUTS, "mds_swap_layouts" },
102 { LDLM_ENQUEUE, "ldlm_enqueue" },
103 { LDLM_CONVERT, "ldlm_convert" },
104 { LDLM_CANCEL, "ldlm_cancel" },
105 { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
106 { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
107 { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
108 { LDLM_SET_INFO, "ldlm_set_info" },
109 { MGS_CONNECT, "mgs_connect" },
110 { MGS_DISCONNECT, "mgs_disconnect" },
111 { MGS_EXCEPTION, "mgs_exception" },
112 { MGS_TARGET_REG, "mgs_target_reg" },
113 { MGS_TARGET_DEL, "mgs_target_del" },
114 { MGS_SET_INFO, "mgs_set_info" },
115 { MGS_CONFIG_READ, "mgs_config_read" },
116 { OBD_PING, "obd_ping" },
117 { OBD_LOG_CANCEL, "llog_cancel" },
118 { OBD_QC_CALLBACK, "obd_quota_callback" },
119 { OBD_IDX_READ, "dt_index_read" },
120 { LLOG_ORIGIN_HANDLE_CREATE, "llog_origin_handle_open" },
121 { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
122 { LLOG_ORIGIN_HANDLE_READ_HEADER, "llog_origin_handle_read_header" },
123 { LLOG_ORIGIN_HANDLE_WRITE_REC, "llog_origin_handle_write_rec" },
124 { LLOG_ORIGIN_HANDLE_CLOSE, "llog_origin_handle_close" },
125 { LLOG_ORIGIN_CONNECT, "llog_origin_connect" },
126 { LLOG_CATINFO, "llog_catinfo" },
127 { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
128 { LLOG_ORIGIN_HANDLE_DESTROY, "llog_origin_handle_destroy" },
129 { QUOTA_DQACQ, "quota_acquire" },
130 { QUOTA_DQREL, "quota_release" },
131 { SEQ_QUERY, "seq_query" },
132 { SEC_CTX_INIT, "sec_ctx_init" },
133 { SEC_CTX_INIT_CONT, "sec_ctx_init_cont" },
134 { SEC_CTX_FINI, "sec_ctx_fini" },
135 { FLD_QUERY, "fld_query" },
136 { UPDATE_OBJ, "update_obj" },
142 } ll_eopcode_table[EXTRA_LAST_OPC] = {
143 { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
144 { LDLM_PLAIN_ENQUEUE, "ldlm_plain_enqueue" },
145 { LDLM_EXTENT_ENQUEUE, "ldlm_extent_enqueue" },
146 { LDLM_FLOCK_ENQUEUE, "ldlm_flock_enqueue" },
147 { LDLM_IBITS_ENQUEUE, "ldlm_ibits_enqueue" },
148 { MDS_REINT_SETATTR, "mds_reint_setattr" },
149 { MDS_REINT_CREATE, "mds_reint_create" },
150 { MDS_REINT_LINK, "mds_reint_link" },
151 { MDS_REINT_UNLINK, "mds_reint_unlink" },
152 { MDS_REINT_RENAME, "mds_reint_rename" },
153 { MDS_REINT_OPEN, "mds_reint_open" },
154 { MDS_REINT_SETXATTR, "mds_reint_setxattr" },
155 { BRW_READ_BYTES, "read_bytes" },
156 { BRW_WRITE_BYTES, "write_bytes" },
159 const char *ll_opcode2str(__u32 opcode)
161 /* When one of the assertions below fail, chances are that:
162 * 1) A new opcode was added in include/lustre/lustre_idl.h,
163 * but is missing from the table above.
164 * or 2) The opcode space was renumbered or rearranged,
165 * and the opcode_offset() function in
166 * ptlrpc_internal.h needs to be modified.
168 __u32 offset = opcode_offset(opcode);
169 LASSERTF(offset < LUSTRE_MAX_OPCODES,
170 "offset %u >= LUSTRE_MAX_OPCODES %u\n",
171 offset, LUSTRE_MAX_OPCODES);
172 LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
173 "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
174 offset, ll_rpc_opcode_table[offset].opcode, opcode);
175 return ll_rpc_opcode_table[offset].opname;
178 const char *ll_eopcode2str(__u32 opcode)
180 LASSERT(ll_eopcode_table[opcode].opcode == opcode);
181 return ll_eopcode_table[opcode].opname;
183 #if defined (CONFIG_PROC_FS)
184 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
185 char *name, struct proc_dir_entry **procroot_ret,
186 struct lprocfs_stats **stats_ret)
188 struct proc_dir_entry *svc_procroot;
189 struct lprocfs_stats *svc_stats;
191 unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
194 LASSERT(*procroot_ret == NULL);
195 LASSERT(*stats_ret == NULL);
197 svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,
199 if (svc_stats == NULL)
203 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
204 if (IS_ERR(svc_procroot)) {
205 lprocfs_free_stats(&svc_stats);
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++) {
226 case BRW_WRITE_BYTES:
234 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
236 ll_eopcode2str(i), units);
238 for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
239 __u32 opcode = ll_rpc_opcode_table[i].opcode;
240 lprocfs_counter_init(svc_stats,
241 EXTRA_MAX_OPCODES + i, svc_counter_config,
242 ll_opcode2str(opcode), "usec");
245 rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
248 lprocfs_remove(&svc_procroot);
249 lprocfs_free_stats(&svc_stats);
252 *procroot_ret = svc_procroot;
253 *stats_ret = svc_stats;
258 ptlrpc_lprocfs_req_history_len_seq_show(struct seq_file *m, void *v)
260 struct ptlrpc_service *svc = m->private;
261 struct ptlrpc_service_part *svcpt;
265 ptlrpc_service_for_each_part(svcpt, i, svc)
266 total += svcpt->scp_hist_nrqbds;
268 return seq_printf(m, "%d\n", total);
270 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_req_history_len);
273 ptlrpc_lprocfs_req_history_max_seq_show(struct seq_file *m, void *n)
275 struct ptlrpc_service *svc = m->private;
276 struct ptlrpc_service_part *svcpt;
280 ptlrpc_service_for_each_part(svcpt, i, svc)
281 total += svc->srv_hist_nrqbds_cpt_max;
283 return seq_printf(m, "%d\n", total);
287 ptlrpc_lprocfs_req_history_max_seq_write(struct file *file, const char *buffer,
288 size_t count, loff_t *off)
290 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
295 rc = lprocfs_write_helper(buffer, count, &val);
302 /* This sanity check is more of an insanity check; we can still
303 * hose a kernel by allowing the request history to grow too
305 bufpages = (svc->srv_buf_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
306 if (val > totalram_pages / (2 * bufpages))
309 spin_lock(&svc->srv_lock);
312 svc->srv_hist_nrqbds_cpt_max = 0;
314 svc->srv_hist_nrqbds_cpt_max = max(1, (val / svc->srv_ncpts));
316 spin_unlock(&svc->srv_lock);
320 LPROC_SEQ_FOPS(ptlrpc_lprocfs_req_history_max);
323 ptlrpc_lprocfs_threads_min_seq_show(struct seq_file *m, void *n)
325 struct ptlrpc_service *svc = m->private;
327 return seq_printf(m, "%d\n",
328 svc->srv_nthrs_cpt_init * svc->srv_ncpts);
332 ptlrpc_lprocfs_threads_min_seq_write(struct file *file, const char *buffer,
333 size_t count, loff_t *off)
335 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
337 int rc = lprocfs_write_helper(buffer, count, &val);
342 if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
345 spin_lock(&svc->srv_lock);
346 if (val > svc->srv_nthrs_cpt_limit * svc->srv_ncpts) {
347 spin_unlock(&svc->srv_lock);
351 svc->srv_nthrs_cpt_init = val / svc->srv_ncpts;
353 spin_unlock(&svc->srv_lock);
357 LPROC_SEQ_FOPS(ptlrpc_lprocfs_threads_min);
360 ptlrpc_lprocfs_threads_started_seq_show(struct seq_file *m, void *n)
362 struct ptlrpc_service *svc = m->private;
363 struct ptlrpc_service_part *svcpt;
367 ptlrpc_service_for_each_part(svcpt, i, svc)
368 total += svcpt->scp_nthrs_running;
370 return seq_printf(m, "%d\n", total);
372 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_threads_started);
375 ptlrpc_lprocfs_threads_max_seq_show(struct seq_file *m, void *n)
377 struct ptlrpc_service *svc = m->private;
379 return seq_printf(m, "%d\n",
380 svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
384 ptlrpc_lprocfs_threads_max_seq_write(struct file *file, const char *buffer,
385 size_t count, loff_t *off)
387 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
389 int rc = lprocfs_write_helper(buffer, count, &val);
394 if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
397 spin_lock(&svc->srv_lock);
398 if (val < svc->srv_nthrs_cpt_init * svc->srv_ncpts) {
399 spin_unlock(&svc->srv_lock);
403 svc->srv_nthrs_cpt_limit = val / svc->srv_ncpts;
405 spin_unlock(&svc->srv_lock);
409 LPROC_SEQ_FOPS(ptlrpc_lprocfs_threads_max);
415 extern struct nrs_core nrs_core;
418 * Translates \e ptlrpc_nrs_pol_state values to human-readable strings.
420 * \param[in] state The policy state
422 static const char *nrs_state2str(enum ptlrpc_nrs_pol_state state)
427 case NRS_POL_STATE_INVALID:
429 case NRS_POL_STATE_STOPPED:
431 case NRS_POL_STATE_STOPPING:
433 case NRS_POL_STATE_STARTING:
435 case NRS_POL_STATE_STARTED:
441 * Obtains status information for \a policy.
443 * Information is copied in \a info.
445 * \param[in] policy The policy
446 * \param[out] info Holds returned status information
448 void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
449 struct ptlrpc_nrs_pol_info *info)
451 LASSERT(policy != NULL);
452 LASSERT(info != NULL);
453 assert_spin_locked(&policy->pol_nrs->nrs_lock);
455 memcpy(info->pi_name, policy->pol_desc->pd_name, NRS_POL_NAME_MAX);
457 info->pi_fallback = !!(policy->pol_flags & PTLRPC_NRS_FL_FALLBACK);
458 info->pi_state = policy->pol_state;
460 * XXX: These are accessed without holding
461 * ptlrpc_service_part::scp_req_lock.
463 info->pi_req_queued = policy->pol_req_queued;
464 info->pi_req_started = policy->pol_req_started;
468 * Reads and prints policy status information for all policies of a PTLRPC
471 static int ptlrpc_lprocfs_nrs_seq_show(struct seq_file *m, void *n)
473 struct ptlrpc_service *svc = m->private;
474 struct ptlrpc_service_part *svcpt;
475 struct ptlrpc_nrs *nrs;
476 struct ptlrpc_nrs_policy *policy;
477 struct ptlrpc_nrs_pol_info *infos;
478 struct ptlrpc_nrs_pol_info tmp;
480 unsigned pol_idx = 0;
486 * Serialize NRS core lprocfs operations with policy registration/
489 mutex_lock(&nrs_core.nrs_mutex);
492 * Use the first service partition's regular NRS head in order to obtain
493 * the number of policies registered with NRS heads of this service. All
494 * service partitions will have the same number of policies.
496 nrs = nrs_svcpt2nrs(svc->srv_parts[0], false);
498 spin_lock(&nrs->nrs_lock);
499 num_pols = svc->srv_parts[0]->scp_nrs_reg.nrs_num_pols;
500 spin_unlock(&nrs->nrs_lock);
502 OBD_ALLOC(infos, num_pols * sizeof(*infos));
509 ptlrpc_service_for_each_part(svcpt, i, svc) {
510 nrs = nrs_svcpt2nrs(svcpt, hp);
511 spin_lock(&nrs->nrs_lock);
515 list_for_each_entry(policy, &nrs->nrs_policy_list,
517 LASSERT(pol_idx < num_pols);
519 nrs_policy_get_info_locked(policy, &tmp);
521 * Copy values when handling the first service
525 memcpy(infos[pol_idx].pi_name, tmp.pi_name,
527 memcpy(&infos[pol_idx].pi_state, &tmp.pi_state,
528 sizeof(tmp.pi_state));
529 infos[pol_idx].pi_fallback = tmp.pi_fallback;
531 * For the rest of the service partitions
532 * sanity-check the values we get.
535 LASSERT(strncmp(infos[pol_idx].pi_name,
537 NRS_POL_NAME_MAX) == 0);
539 * Not asserting ptlrpc_nrs_pol_info::pi_state,
540 * because it may be different between
541 * instances of the same policy in different
542 * service partitions.
544 LASSERT(infos[pol_idx].pi_fallback ==
548 infos[pol_idx].pi_req_queued += tmp.pi_req_queued;
549 infos[pol_idx].pi_req_started += tmp.pi_req_started;
553 spin_unlock(&nrs->nrs_lock);
557 * Policy status information output is in YAML format.
573 * high_priority_requests:
586 seq_printf(m, "%s\n",
587 !hp ? "\nregular_requests:" : "high_priority_requests:");
589 for (pol_idx = 0; pol_idx < num_pols; pol_idx++) {
590 seq_printf(m, " - name: %s\n"
594 " active: %-20d\n\n",
595 infos[pol_idx].pi_name,
596 nrs_state2str(infos[pol_idx].pi_state),
597 infos[pol_idx].pi_fallback ? "yes" : "no",
598 (int)infos[pol_idx].pi_req_queued,
599 (int)infos[pol_idx].pi_req_started);
602 if (!hp && nrs_svc_has_hp(svc)) {
603 memset(infos, 0, num_pols * sizeof(*infos));
606 * Redo the processing for the service's HP NRS heads' policies.
614 OBD_FREE(infos, num_pols * sizeof(*infos));
616 mutex_unlock(&nrs_core.nrs_mutex);
622 * The longest valid command string is the maximum policy name size, plus the
623 * length of the " reg" substring
625 #define LPROCFS_NRS_WR_MAX_CMD (NRS_POL_NAME_MAX + sizeof(" reg") - 1)
628 * Starts and stops a given policy on a PTLRPC service.
630 * Commands consist of the policy name, followed by an optional [reg|hp] token;
631 * if the optional token is omitted, the operation is performed on both the
632 * regular and high-priority (if the service has one) NRS head.
634 static ssize_t ptlrpc_lprocfs_nrs_seq_write(struct file *file,
635 const char __user *buffer,
636 size_t count, loff_t *off)
638 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
639 enum ptlrpc_nrs_queue_type queue = PTLRPC_NRS_QUEUE_BOTH;
641 char *cmd_copy = NULL;
645 if (count >= LPROCFS_NRS_WR_MAX_CMD) {
650 OBD_ALLOC(cmd, LPROCFS_NRS_WR_MAX_CMD);
656 * strsep() modifies its argument, so keep a copy
660 if (copy_from_user(cmd, buffer, count)) {
667 token = strsep(&cmd, " ");
669 if (strlen(token) > NRS_POL_NAME_MAX - 1) {
675 * No [reg|hp] token has been specified
681 * The second token is either NULL, or an optional [reg|hp] string
683 if (strcmp(cmd, "reg") == 0)
684 queue = PTLRPC_NRS_QUEUE_REG;
685 else if (strcmp(cmd, "hp") == 0)
686 queue = PTLRPC_NRS_QUEUE_HP;
694 if (queue == PTLRPC_NRS_QUEUE_HP && !nrs_svc_has_hp(svc)) {
697 } else if (queue == PTLRPC_NRS_QUEUE_BOTH && !nrs_svc_has_hp(svc))
698 queue = PTLRPC_NRS_QUEUE_REG;
701 * Serialize NRS core lprocfs operations with policy registration/
704 mutex_lock(&nrs_core.nrs_mutex);
706 rc = ptlrpc_nrs_policy_control(svc, queue, token, PTLRPC_NRS_CTL_START,
709 mutex_unlock(&nrs_core.nrs_mutex);
712 OBD_FREE(cmd_copy, LPROCFS_NRS_WR_MAX_CMD);
714 return rc < 0 ? rc : count;
716 LPROC_SEQ_FOPS(ptlrpc_lprocfs_nrs);
720 struct ptlrpc_srh_iterator {
723 struct ptlrpc_request *srhi_req;
727 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
728 struct ptlrpc_srh_iterator *srhi,
732 struct ptlrpc_request *req;
734 if (srhi->srhi_req != NULL &&
735 srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
736 srhi->srhi_seq <= seq) {
737 /* If srhi_req was set previously, hasn't been culled and
738 * we're searching for a seq on or after it (i.e. more
739 * recent), search from it onwards.
740 * Since the service history is LRU (i.e. culled reqs will
741 * be near the head), we shouldn't have to do long
743 LASSERTF(srhi->srhi_seq == srhi->srhi_req->rq_history_seq,
744 "%s:%d: seek seq %llu, request seq %llu\n",
745 svcpt->scp_service->srv_name, svcpt->scp_cpt,
746 srhi->srhi_seq, srhi->srhi_req->rq_history_seq);
747 LASSERTF(!list_empty(&svcpt->scp_hist_reqs),
748 "%s:%d: seek offset %llu, request seq %llu, "
749 "last culled %llu\n",
750 svcpt->scp_service->srv_name, svcpt->scp_cpt,
751 seq, srhi->srhi_seq, svcpt->scp_hist_seq_culled);
752 e = &srhi->srhi_req->rq_history_list;
754 /* search from start */
755 e = svcpt->scp_hist_reqs.next;
758 while (e != &svcpt->scp_hist_reqs) {
759 req = list_entry(e, struct ptlrpc_request, rq_history_list);
761 if (req->rq_history_seq >= seq) {
762 srhi->srhi_seq = req->rq_history_seq;
763 srhi->srhi_req = req;
773 * ptlrpc history sequence is used as "position" of seq_file, in some case,
774 * seq_read() will increase "position" to indicate reading the next
775 * element, however, low bits of history sequence are reserved for CPT id
776 * (check the details from comments before ptlrpc_req_add_history), which
777 * means seq_read() might change CPT id of history sequence and never
778 * finish reading of requests on a CPT. To make it work, we have to shift
779 * CPT id to high bits and timestamp to low bits, so seq_read() will only
780 * increase timestamp which can correctly indicate the next position.
783 /* convert seq_file pos to cpt */
784 #define PTLRPC_REQ_POS2CPT(svc, pos) \
785 ((svc)->srv_cpt_bits == 0 ? 0 : \
786 (__u64)(pos) >> (64 - (svc)->srv_cpt_bits))
788 /* make up seq_file pos from cpt */
789 #define PTLRPC_REQ_CPT2POS(svc, cpt) \
790 ((svc)->srv_cpt_bits == 0 ? 0 : \
791 (cpt) << (64 - (svc)->srv_cpt_bits))
793 /* convert sequence to position */
794 #define PTLRPC_REQ_SEQ2POS(svc, seq) \
795 ((svc)->srv_cpt_bits == 0 ? (seq) : \
796 ((seq) >> (svc)->srv_cpt_bits) | \
797 ((seq) << (64 - (svc)->srv_cpt_bits)))
799 /* convert position to sequence */
800 #define PTLRPC_REQ_POS2SEQ(svc, pos) \
801 ((svc)->srv_cpt_bits == 0 ? (pos) : \
802 ((__u64)(pos) << (svc)->srv_cpt_bits) | \
803 ((__u64)(pos) >> (64 - (svc)->srv_cpt_bits)))
806 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
808 struct ptlrpc_service *svc = s->private;
809 struct ptlrpc_service_part *svcpt;
810 struct ptlrpc_srh_iterator *srhi;
815 if (sizeof(loff_t) != sizeof(__u64)) { /* can't support */
816 CWARN("Failed to read request history because size of loff_t "
817 "%d can't match size of u64\n", (int)sizeof(loff_t));
821 OBD_ALLOC(srhi, sizeof(*srhi));
826 srhi->srhi_req = NULL;
828 cpt = PTLRPC_REQ_POS2CPT(svc, *pos);
830 ptlrpc_service_for_each_part(svcpt, i, svc) {
831 if (i < cpt) /* skip */
833 if (i > cpt) /* make up the lowest position for this CPT */
834 *pos = PTLRPC_REQ_CPT2POS(svc, i);
836 spin_lock(&svcpt->scp_lock);
837 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi,
838 PTLRPC_REQ_POS2SEQ(svc, *pos));
839 spin_unlock(&svcpt->scp_lock);
841 *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
847 OBD_FREE(srhi, sizeof(*srhi));
852 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
854 struct ptlrpc_srh_iterator *srhi = iter;
857 OBD_FREE(srhi, sizeof(*srhi));
861 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
862 void *iter, loff_t *pos)
864 struct ptlrpc_service *svc = s->private;
865 struct ptlrpc_srh_iterator *srhi = iter;
866 struct ptlrpc_service_part *svcpt;
871 for (i = srhi->srhi_idx; i < svc->srv_ncpts; i++) {
872 svcpt = svc->srv_parts[i];
874 if (i > srhi->srhi_idx) { /* reset iterator for a new CPT */
875 srhi->srhi_req = NULL;
876 seq = srhi->srhi_seq = 0;
877 } else { /* the next sequence */
878 seq = srhi->srhi_seq + (1 << svc->srv_cpt_bits);
881 spin_lock(&svcpt->scp_lock);
882 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, seq);
883 spin_unlock(&svcpt->scp_lock);
885 *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
891 OBD_FREE(srhi, sizeof(*srhi));
895 /* common ost/mdt so_req_printer */
896 void target_print_req(void *seq_file, struct ptlrpc_request *req)
898 /* Called holding srv_lock with irqs disabled.
899 * Print specific req contents and a newline.
900 * CAVEAT EMPTOR: check request message length before printing!!!
901 * You might have received any old crap so you must be just as
902 * careful here as the service's request parser!!! */
903 struct seq_file *sf = seq_file;
905 switch (req->rq_phase) {
907 /* still awaiting a service thread's attention, or rejected
908 * because the generic request message didn't unpack */
909 seq_printf(sf, "<not swabbed>\n");
911 case RQ_PHASE_INTERPRET:
912 /* being handled, so basic msg swabbed, and opc is valid
913 * but racing with mds_handle() */
914 case RQ_PHASE_COMPLETE:
915 /* been handled by mds_handle() reply state possibly still
917 seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
920 DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
923 EXPORT_SYMBOL(target_print_req);
925 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
927 struct ptlrpc_service *svc = s->private;
928 struct ptlrpc_srh_iterator *srhi = iter;
929 struct ptlrpc_service_part *svcpt;
930 struct ptlrpc_request *req;
933 LASSERT(srhi->srhi_idx < svc->srv_ncpts);
935 svcpt = svc->srv_parts[srhi->srhi_idx];
937 spin_lock(&svcpt->scp_lock);
939 rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
942 req = srhi->srhi_req;
944 /* Print common req fields.
945 * CAVEAT EMPTOR: we're racing with the service handler
946 * here. The request could contain any old crap, so you
947 * must be just as careful as the service's request
948 * parser. Currently I only print stuff here I know is OK
949 * to look at coz it was set up in request_in_callback()!!! */
950 seq_printf(s, "%lld:%s:%s:x%llu:%d:%s:%ld:%lds(%+lds) ",
951 req->rq_history_seq, libcfs_nid2str(req->rq_self),
952 libcfs_id2str(req->rq_peer), req->rq_xid,
953 req->rq_reqlen, ptlrpc_rqphase2str(req),
954 req->rq_arrival_time.tv_sec,
955 req->rq_sent - req->rq_arrival_time.tv_sec,
956 req->rq_sent - req->rq_deadline);
957 if (svc->srv_ops.so_req_printer == NULL)
960 svc->srv_ops.so_req_printer(s, srhi->srhi_req);
963 spin_unlock(&svcpt->scp_lock);
968 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
970 static struct seq_operations sops = {
971 .start = ptlrpc_lprocfs_svc_req_history_start,
972 .stop = ptlrpc_lprocfs_svc_req_history_stop,
973 .next = ptlrpc_lprocfs_svc_req_history_next,
974 .show = ptlrpc_lprocfs_svc_req_history_show,
976 struct seq_file *seqf;
979 rc = seq_open(file, &sops);
983 seqf = file->private_data;
984 seqf->private = PDE_DATA(inode);
988 /* See also lprocfs_rd_timeouts */
989 static int ptlrpc_lprocfs_timeouts_seq_show(struct seq_file *m, void *n)
991 struct ptlrpc_service *svc = m->private;
992 struct ptlrpc_service_part *svcpt;
1000 seq_printf(m, "adaptive timeouts off, using obd_timeout %u\n",
1005 ptlrpc_service_for_each_part(svcpt, i, svc) {
1006 cur = at_get(&svcpt->scp_at_estimate);
1007 worst = svcpt->scp_at_estimate.at_worst_ever;
1008 worstt = svcpt->scp_at_estimate.at_worst_time;
1009 s2dhms(&ts, get_seconds() - worstt);
1011 seq_printf(m, "%10s : cur %3u worst %3u (at %ld, "
1012 DHMS_FMT" ago) ", "service",
1013 cur, worst, worstt, DHMS_VARS(&ts));
1015 lprocfs_at_hist_helper(m, &svcpt->scp_at_estimate);
1020 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_timeouts);
1022 static int ptlrpc_lprocfs_hp_ratio_seq_show(struct seq_file *m, void *v)
1024 struct ptlrpc_service *svc = m->private;
1025 return seq_printf(m, "%d", svc->srv_hpreq_ratio);
1028 static ssize_t ptlrpc_lprocfs_hp_ratio_seq_write(struct file *file,
1033 struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
1037 rc = lprocfs_write_helper(buffer, count, &val);
1044 spin_lock(&svc->srv_lock);
1045 svc->srv_hpreq_ratio = val;
1046 spin_unlock(&svc->srv_lock);
1050 LPROC_SEQ_FOPS(ptlrpc_lprocfs_hp_ratio);
1052 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
1053 struct ptlrpc_service *svc)
1055 struct lprocfs_vars lproc_vars[] = {
1056 {.name = "high_priority_ratio",
1057 .fops = &ptlrpc_lprocfs_hp_ratio_fops,
1059 {.name = "req_buffer_history_len",
1060 .fops = &ptlrpc_lprocfs_req_history_len_fops,
1062 {.name = "req_buffer_history_max",
1063 .fops = &ptlrpc_lprocfs_req_history_max_fops,
1065 {.name = "threads_min",
1066 .fops = &ptlrpc_lprocfs_threads_min_fops,
1068 {.name = "threads_max",
1069 .fops = &ptlrpc_lprocfs_threads_max_fops,
1071 {.name = "threads_started",
1072 .fops = &ptlrpc_lprocfs_threads_started_fops,
1074 {.name = "timeouts",
1075 .fops = &ptlrpc_lprocfs_timeouts_fops,
1077 {.name = "nrs_policies",
1078 .fops = &ptlrpc_lprocfs_nrs_fops,
1082 static struct file_operations req_history_fops = {
1083 .owner = THIS_MODULE,
1084 .open = ptlrpc_lprocfs_svc_req_history_open,
1086 .llseek = seq_lseek,
1087 .release = lprocfs_seq_release,
1092 ptlrpc_lprocfs_register(entry, svc->srv_name,
1093 "stats", &svc->srv_procroot,
1096 if (svc->srv_procroot == NULL)
1099 lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
1101 rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
1102 0400, &req_history_fops, svc);
1104 CWARN("Error adding the req_history file\n");
1107 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
1109 ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
1110 &obddev->obd_svc_procroot,
1111 &obddev->obd_svc_stats);
1113 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
1115 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
1117 struct lprocfs_stats *svc_stats;
1118 __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
1119 int opc = opcode_offset(op);
1121 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
1122 if (svc_stats == NULL || opc <= 0)
1124 LASSERT(opc < LUSTRE_MAX_OPCODES);
1125 if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
1126 lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
1129 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
1131 struct lprocfs_stats *svc_stats;
1134 if (!req->rq_import)
1136 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
1139 idx = lustre_msg_get_opc(req->rq_reqmsg);
1142 idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
1145 idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
1148 LASSERTF(0, "unsupported opcode %u\n", idx);
1152 lprocfs_counter_add(svc_stats, idx, bytes);
1155 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
1157 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
1159 if (svc->srv_procroot != NULL)
1160 lprocfs_remove(&svc->srv_procroot);
1163 lprocfs_free_stats(&svc->srv_stats);
1166 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
1168 if (obd->obd_svc_procroot)
1169 lprocfs_remove(&obd->obd_svc_procroot);
1171 if (obd->obd_svc_stats)
1172 lprocfs_free_stats(&obd->obd_svc_stats);
1174 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
1177 #define BUFLEN (UUID_MAX + 5)
1179 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
1180 size_t count, loff_t *off)
1182 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1186 OBD_ALLOC(kbuf, BUFLEN);
1191 * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
1192 * bytes into kbuf, to ensure that the string is NUL-terminated.
1193 * UUID_MAX should include a trailing NUL already.
1195 if (copy_from_user(kbuf, buffer,
1196 min_t(unsigned long, BUFLEN - 1, count))) {
1200 tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
1201 /* Kludge code(deadlock situation): the lprocfs lock has been held
1202 * since the client is evicted by writing client's
1203 * uuid/nid to procfs "evict_client" entry. However,
1204 * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
1205 * the proc entries under the being destroyed export{}, so I have
1206 * to drop the lock at first here.
1207 * - jay, jxiong@clusterfs.com */
1208 class_incref(obd, __func__, current);
1210 if (strncmp(tmpbuf, "nid:", 4) == 0)
1211 obd_export_evict_by_nid(obd, tmpbuf + 4);
1212 else if (strncmp(tmpbuf, "uuid:", 5) == 0)
1213 obd_export_evict_by_uuid(obd, tmpbuf + 5);
1215 obd_export_evict_by_uuid(obd, tmpbuf);
1217 class_decref(obd, __func__, current);
1220 OBD_FREE(kbuf, BUFLEN);
1223 EXPORT_SYMBOL(lprocfs_wr_evict_client);
1227 int lprocfs_wr_ping(struct file *file, const char *buffer,
1228 size_t count, loff_t *off)
1230 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1231 struct ptlrpc_request *req;
1234 LPROCFS_CLIMP_CHECK(obd);
1235 req = ptlrpc_prep_ping(obd->u.cli.cl_import);
1236 LPROCFS_CLIMP_EXIT(obd);
1240 req->rq_send_state = LUSTRE_IMP_FULL;
1242 rc = ptlrpc_queue_wait(req);
1244 ptlrpc_req_finished(req);
1249 EXPORT_SYMBOL(lprocfs_wr_ping);
1251 /* Write the connection UUID to this file to attempt to connect to that node.
1252 * The connection UUID is a node's primary NID. For example,
1253 * "echo connection=192.168.0.1@tcp0::instance > .../import".
1255 int lprocfs_wr_import(struct file *file, const char *buffer,
1256 size_t count, loff_t *off)
1258 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1259 struct obd_import *imp = obd->u.cli.cl_import;
1264 const char prefix[] = "connection=";
1265 const int prefix_len = sizeof(prefix) - 1;
1267 if (count > PAGE_CACHE_SIZE - 1 || count <= prefix_len)
1270 OBD_ALLOC(kbuf, count + 1);
1274 if (copy_from_user(kbuf, buffer, count)) {
1281 /* only support connection=uuid::instance now */
1282 if (strncmp(prefix, kbuf, prefix_len) != 0) {
1287 uuid = kbuf + prefix_len;
1288 ptr = strstr(uuid, "::");
1295 ptr += strlen("::");
1296 inst = simple_strtol(ptr, &endptr, 10);
1298 CERROR("config: wrong instance # %s\n", ptr);
1299 } else if (inst != imp->imp_connect_data.ocd_instance) {
1300 CDEBUG(D_INFO, "IR: %s is connecting to an obsoleted "
1301 "target(%u/%u), reconnecting...\n",
1302 imp->imp_obd->obd_name,
1303 imp->imp_connect_data.ocd_instance, inst);
1306 CDEBUG(D_INFO, "IR: %s has already been connecting to "
1308 imp->imp_obd->obd_name, inst);
1313 ptlrpc_recover_import(imp, uuid, 1);
1316 OBD_FREE(kbuf, count + 1);
1319 EXPORT_SYMBOL(lprocfs_wr_import);
1321 int lprocfs_rd_pinger_recov(struct seq_file *m, void *n)
1323 struct obd_device *obd = m->private;
1324 struct obd_import *imp = obd->u.cli.cl_import;
1327 LPROCFS_CLIMP_CHECK(obd);
1328 rc = seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
1329 LPROCFS_CLIMP_EXIT(obd);
1333 EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
1335 int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
1336 size_t count, loff_t *off)
1338 struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
1339 struct client_obd *cli = &obd->u.cli;
1340 struct obd_import *imp = cli->cl_import;
1343 rc = lprocfs_write_helper(buffer, count, &val);
1347 if (val != 0 && val != 1)
1350 LPROCFS_CLIMP_CHECK(obd);
1351 spin_lock(&imp->imp_lock);
1352 imp->imp_no_pinger_recover = !val;
1353 spin_unlock(&imp->imp_lock);
1354 LPROCFS_CLIMP_EXIT(obd);
1359 EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
1361 #endif /* CONFIG_PROC_FS */