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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/lprocfs_status.c
34 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <obd_class.h>
40 #include <lprocfs_status.h>
44 static int lprocfs_no_percpu_stats = 0;
45 module_param(lprocfs_no_percpu_stats, int, 0644);
46 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
48 #define MAX_STRING_SIZE 128
50 int lprocfs_single_release(struct inode *inode, struct file *file)
52 return single_release(inode, file);
54 EXPORT_SYMBOL(lprocfs_single_release);
56 int lprocfs_seq_release(struct inode *inode, struct file *file)
58 return seq_release(inode, file);
60 EXPORT_SYMBOL(lprocfs_seq_release);
62 struct proc_dir_entry *
63 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
64 void *data, const struct file_operations *fops)
66 struct proc_dir_entry *proc;
69 if (!root || !name || !fops)
70 return ERR_PTR(-EINVAL);
76 proc = proc_create_data(name, mode, root, fops, data);
78 CERROR("LprocFS: No memory to create /proc entry %s\n",
80 return ERR_PTR(-ENOMEM);
84 EXPORT_SYMBOL(lprocfs_add_simple);
86 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
87 struct proc_dir_entry *parent,
88 const char *format, ...)
90 struct proc_dir_entry *entry;
94 if (!parent || !format)
97 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
101 va_start(ap, format);
102 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
105 entry = proc_symlink(name, parent, dest);
107 CERROR("LprocFS: Could not create symbolic link from "
108 "%s to %s\n", name, dest);
110 OBD_FREE(dest, MAX_STRING_SIZE + 1);
113 EXPORT_SYMBOL(lprocfs_add_symlink);
115 static const struct file_operations ldebugfs_empty_ops = { };
117 void ldebugfs_add_vars(struct dentry *parent, struct ldebugfs_vars *list,
120 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
126 if (list->proc_mode != 0000) {
127 mode = list->proc_mode;
128 } else if (list->fops) {
129 if (list->fops->read)
131 if (list->fops->write)
134 debugfs_create_file(list->name, mode, parent,
136 list->fops ? : &ldebugfs_empty_ops);
140 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
142 static const struct file_operations lprocfs_empty_ops = { };
147 * \param root [in] The parent proc entry on which new entry will be added.
148 * \param list [in] Array of proc entries to be added.
149 * \param data [in] The argument to be passed when entries read/write routines
150 * are called through /proc file.
152 * \retval 0 on success
156 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
163 struct proc_dir_entry *proc;
166 if (list->proc_mode != 0000) {
167 mode = list->proc_mode;
168 } else if (list->fops) {
169 if (list->fops->read)
171 if (list->fops->write)
174 proc = proc_create_data(list->name, mode, root,
175 list->fops ?: &lprocfs_empty_ops,
183 EXPORT_SYMBOL(lprocfs_add_vars);
185 void lprocfs_remove(struct proc_dir_entry **rooth)
190 EXPORT_SYMBOL(lprocfs_remove);
192 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
194 LASSERT(parent != NULL);
195 remove_proc_entry(name, parent);
197 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
199 struct proc_dir_entry *
200 lprocfs_register(const char *name, struct proc_dir_entry *parent,
201 struct lprocfs_vars *list, void *data)
203 struct proc_dir_entry *newchild;
205 newchild = proc_mkdir(name, parent);
207 return ERR_PTR(-ENOMEM);
210 int rc = lprocfs_add_vars(newchild, list, data);
212 lprocfs_remove(&newchild);
218 EXPORT_SYMBOL(lprocfs_register);
220 /* Generic callbacks */
221 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
223 struct obd_device *obd = data;
225 LASSERT(obd != NULL);
226 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
229 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
231 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
234 struct obd_device *obd = container_of(kobj, struct obd_device,
237 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
239 LUSTRE_RO_ATTR(uuid);
241 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
244 struct obd_device *obd = container_of(kobj, struct obd_device,
246 struct obd_statfs osfs;
249 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
250 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
253 return sprintf(buf, "%u\n", osfs.os_bsize);
257 LUSTRE_RO_ATTR(blocksize);
259 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
262 struct obd_device *obd = container_of(kobj, struct obd_device,
264 struct obd_statfs osfs;
267 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
268 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
271 u32 blk_size = osfs.os_bsize >> 10;
272 u64 result = osfs.os_blocks;
274 result *= rounddown_pow_of_two(blk_size ?: 1);
275 return sprintf(buf, "%llu\n", result);
280 LUSTRE_RO_ATTR(kbytestotal);
282 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
285 struct obd_device *obd = container_of(kobj, struct obd_device,
287 struct obd_statfs osfs;
290 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
291 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
294 u32 blk_size = osfs.os_bsize >> 10;
295 u64 result = osfs.os_bfree;
297 while (blk_size >>= 1)
300 return sprintf(buf, "%llu\n", result);
305 LUSTRE_RO_ATTR(kbytesfree);
307 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
310 struct obd_device *obd = container_of(kobj, struct obd_device,
312 struct obd_statfs osfs;
315 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
316 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
319 u32 blk_size = osfs.os_bsize >> 10;
320 u64 result = osfs.os_bavail;
322 while (blk_size >>= 1)
325 return sprintf(buf, "%llu\n", result);
330 LUSTRE_RO_ATTR(kbytesavail);
332 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
335 struct obd_device *obd = container_of(kobj, struct obd_device,
337 struct obd_statfs osfs;
340 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
341 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
344 return sprintf(buf, "%llu\n", osfs.os_files);
348 LUSTRE_RO_ATTR(filestotal);
350 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
353 struct obd_device *obd = container_of(kobj, struct obd_device,
355 struct obd_statfs osfs;
358 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
359 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
362 return sprintf(buf, "%llu\n", osfs.os_ffree);
366 LUSTRE_RO_ATTR(filesfree);
368 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
370 struct obd_device *obd = container_of(kobj, struct obd_device,
372 struct obd_import *imp;
373 struct ptlrpc_connection *conn;
376 with_imp_locked(obd, imp, count) {
377 conn = imp->imp_connection;
379 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
381 count = sprintf(buf, "%s\n", "<none>");
386 EXPORT_SYMBOL(conn_uuid_show);
388 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
390 struct obd_device *obd = data;
391 struct obd_import *imp;
392 const char *imp_state_name = NULL;
395 LASSERT(obd != NULL);
396 with_imp_locked(obd, imp, rc) {
397 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
398 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
399 imp->imp_deactive ? "\tDEACTIVATED" : "");
404 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
406 /** add up per-cpu counters */
409 * Lock statistics structure for access, possibly only on this CPU.
411 * The statistics struct may be allocated with per-CPU structures for
412 * efficient concurrent update (usually only on server-wide stats), or
413 * as a single global struct (e.g. for per-client or per-job statistics),
414 * so the required locking depends on the type of structure allocated.
416 * For per-CPU statistics, pin the thread to the current cpuid so that
417 * will only access the statistics for that CPU. If the stats structure
418 * for the current CPU has not been allocated (or previously freed),
419 * allocate it now. The per-CPU statistics do not need locking since
420 * the thread is pinned to the CPU during update.
422 * For global statistics, lock the stats structure to prevent concurrent update.
424 * \param[in] stats statistics structure to lock
425 * \param[in] opc type of operation:
426 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
427 * for incrementing statistics for that CPU
428 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
429 * CPU indices to iterate over all indices
430 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
432 * \retval cpuid of current thread or number of allocated structs
433 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
435 int lprocfs_stats_lock(struct lprocfs_stats *stats,
436 enum lprocfs_stats_lock_ops opc,
437 unsigned long *flags)
439 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
440 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
441 spin_lock_irqsave(&stats->ls_lock, *flags);
443 spin_lock(&stats->ls_lock);
444 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
448 case LPROCFS_GET_SMP_ID: {
449 unsigned int cpuid = get_cpu();
451 if (unlikely(!stats->ls_percpu[cpuid])) {
452 int rc = lprocfs_stats_alloc_one(stats, cpuid);
461 case LPROCFS_GET_NUM_CPU:
462 return stats->ls_biggest_alloc_num;
469 * Unlock statistics structure after access.
471 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
472 * or unpin this thread from the current cpuid for per-CPU statistics.
474 * This function must be called using the same arguments as used when calling
475 * lprocfs_stats_lock() so that the correct operation can be performed.
477 * \param[in] stats statistics structure to unlock
478 * \param[in] opc type of operation (current cpuid or number of structs)
479 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
481 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
482 enum lprocfs_stats_lock_ops opc,
483 unsigned long *flags)
485 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
486 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
487 spin_unlock_irqrestore(&stats->ls_lock, *flags);
489 spin_unlock(&stats->ls_lock);
490 } else if (opc == LPROCFS_GET_SMP_ID) {
495 /** add up per-cpu counters */
496 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
497 struct lprocfs_counter *cnt)
499 unsigned int num_entry;
500 struct lprocfs_counter *percpu_cntr;
502 unsigned long flags = 0;
504 memset(cnt, 0, sizeof(*cnt));
507 /* set count to 1 to avoid divide-by-zero errs in callers */
512 cnt->lc_min = LC_MIN_INIT;
514 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
516 for (i = 0; i < num_entry; i++) {
517 if (!stats->ls_percpu[i])
519 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
521 cnt->lc_count += percpu_cntr->lc_count;
522 cnt->lc_sum += percpu_cntr->lc_sum;
523 if (percpu_cntr->lc_min < cnt->lc_min)
524 cnt->lc_min = percpu_cntr->lc_min;
525 if (percpu_cntr->lc_max > cnt->lc_max)
526 cnt->lc_max = percpu_cntr->lc_max;
527 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
530 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
533 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
537 if (imp->imp_obd->obd_no_recov) {
538 seq_printf(m, "no_recov");
542 flag2str(imp, invalid);
543 flag2str(imp, deactive);
544 flag2str(imp, replayable);
545 flag2str(imp, delayed_recovery);
546 flag2str(imp, vbr_failed);
547 flag2str(imp, pingable);
548 flag2str(imp, resend_replay);
549 flag2str(imp, no_pinger_recover);
550 flag2str(imp, connect_tried);
553 static const char *obd_connect_names[] = {
572 "remote_client_by_force",
581 "mds_mds_connection",
584 "alt_checksum_algorithm",
620 "file_secctx", /* 0x01 */
621 "lockaheadv2", /* 0x02 */
622 "dir_migrate", /* 0x04 */
623 "sum_statfs", /* 0x08 */
624 "overstriping", /* 0x10 */
627 "lock_convert", /* 0x80 */
628 "archive_id_array", /* 0x100 */
629 "increasing_xid", /* 0x200 */
630 "selinux_policy", /* 0x400 */
633 "crush", /* 0x2000 */
634 "async_discard", /* 0x4000 */
635 "client_encryption", /* 0x8000 */
639 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
646 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
648 seq_printf(m, "%s%s",
649 first ? "" : sep, obd_connect_names[i]);
654 if (flags & ~(mask - 1)) {
655 seq_printf(m, "%sunknown_%#llx",
656 first ? "" : sep, flags & ~(mask - 1));
660 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
663 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
665 seq_printf(m, "%s%s",
666 first ? "" : sep, obd_connect_names[i]);
671 if (flags2 & ~(mask - 1)) {
672 seq_printf(m, "%sunknown2_%#llx",
673 first ? "" : sep, flags2 & ~(mask - 1));
677 EXPORT_SYMBOL(obd_connect_seq_flags2str);
679 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
685 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
687 ret += snprintf(page + ret, count - ret, "%s%s",
688 ret ? sep : "", obd_connect_names[i]);
691 if (flags & ~(mask - 1))
692 ret += snprintf(page + ret, count - ret,
694 ret ? sep : "", flags & ~(mask - 1));
696 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
699 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
701 ret += snprintf(page + ret, count - ret, "%s%s",
702 ret ? sep : "", obd_connect_names[i]);
705 if (flags2 & ~(mask - 1))
706 ret += snprintf(page + ret, count - ret,
708 ret ? sep : "", flags2 & ~(mask - 1));
712 EXPORT_SYMBOL(obd_connect_flags2str);
715 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
719 LASSERT(ocd != NULL);
720 flags = ocd->ocd_connect_flags;
722 seq_printf(m, " connect_data:\n"
725 ocd->ocd_connect_flags,
727 if (flags & OBD_CONNECT_VERSION)
728 seq_printf(m, " target_version: %u.%u.%u.%u\n",
729 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
730 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
731 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
732 OBD_OCD_VERSION_FIX(ocd->ocd_version));
733 if (flags & OBD_CONNECT_MDS)
734 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
735 if (flags & OBD_CONNECT_GRANT)
736 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
737 if (flags & OBD_CONNECT_INDEX)
738 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
739 if (flags & OBD_CONNECT_BRW_SIZE)
740 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
741 if (flags & OBD_CONNECT_IBITS)
742 seq_printf(m, " ibits_known: %#llx\n",
743 ocd->ocd_ibits_known);
744 if (flags & OBD_CONNECT_GRANT_PARAM)
745 seq_printf(m, " grant_block_size: %d\n"
746 " grant_inode_size: %d\n"
747 " grant_max_extent_size: %d\n"
748 " grant_extent_tax: %d\n",
749 1 << ocd->ocd_grant_blkbits,
750 1 << ocd->ocd_grant_inobits,
751 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
752 ocd->ocd_grant_tax_kb << 10);
753 if (flags & OBD_CONNECT_TRANSNO)
754 seq_printf(m, " first_transno: %#llx\n",
756 if (flags & OBD_CONNECT_CKSUM)
757 seq_printf(m, " cksum_types: %#x\n",
758 ocd->ocd_cksum_types);
759 if (flags & OBD_CONNECT_MAX_EASIZE)
760 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
761 if (flags & OBD_CONNECT_MAXBYTES)
762 seq_printf(m, " max_object_bytes: %llu\n",
764 if (flags & OBD_CONNECT_MULTIMODRPCS)
765 seq_printf(m, " max_mod_rpcs: %hu\n",
766 ocd->ocd_maxmodrpcs);
769 static void lprocfs_import_seq_show_locked(struct seq_file *m,
770 struct obd_device *obd,
771 struct obd_import *imp)
773 char nidstr[LNET_NIDSTR_SIZE];
774 struct lprocfs_counter ret;
775 struct lprocfs_counter_header *header;
776 struct obd_import_conn *conn;
777 struct obd_connect_data *ocd;
782 ocd = &imp->imp_connect_data;
784 seq_printf(m, "import:\n"
788 " connect_flags: [ ",
791 ptlrpc_import_state_name(imp->imp_state));
792 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
793 imp->imp_connect_data.ocd_connect_flags2,
795 seq_printf(m, " ]\n");
796 obd_connect_data_seqprint(m, ocd);
797 seq_printf(m, " import_flags: [ ");
798 obd_import_flags2str(imp, m);
802 " failover_nids: [ ");
803 spin_lock(&imp->imp_lock);
805 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
806 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
807 nidstr, sizeof(nidstr));
808 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
811 if (imp->imp_connection)
812 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
813 nidstr, sizeof(nidstr));
815 strncpy(nidstr, "<none>", sizeof(nidstr));
817 " current_connection: %s\n"
818 " connection_attempts: %u\n"
820 " in-progress_invalidations: %u\n"
825 atomic_read(&imp->imp_inval_count),
826 ktime_get_real_seconds() - imp->imp_last_reply_time);
827 spin_unlock(&imp->imp_lock);
829 if (!obd->obd_svc_stats)
832 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
833 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
834 if (ret.lc_count != 0)
835 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
838 seq_printf(m, " rpcs:\n"
840 " unregistering: %u\n"
842 " avg_waittime: %llu %s\n",
843 atomic_read(&imp->imp_inflight),
844 atomic_read(&imp->imp_unregistering),
845 atomic_read(&imp->imp_timeouts),
846 ret.lc_sum, header->lc_units);
849 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
850 if (imp->imp_at.iat_portal[j] == 0)
852 k = max_t(unsigned int, k,
853 at_get(&imp->imp_at.iat_service_estimate[j]));
855 seq_printf(m, " service_estimates:\n"
856 " services: %u sec\n"
857 " network: %d sec\n",
859 at_get(&imp->imp_at.iat_net_latency));
861 seq_printf(m, " transactions:\n"
862 " last_replay: %llu\n"
863 " peer_committed: %llu\n"
864 " last_checked: %llu\n",
865 imp->imp_last_replay_transno,
866 imp->imp_peer_committed_transno,
867 imp->imp_last_transno_checked);
870 for (rw = 0; rw <= 1; rw++) {
871 lprocfs_stats_collect(obd->obd_svc_stats,
872 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
874 if (ret.lc_sum > 0 && ret.lc_count > 0) {
875 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
876 seq_printf(m, " %s_data_averages:\n"
877 " bytes_per_rpc: %llu\n",
878 rw ? "write" : "read",
882 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
883 header = &obd->obd_svc_stats->ls_cnt_header[j];
884 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
885 if (ret.lc_sum > 0 && ret.lc_count != 0) {
886 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
887 seq_printf(m, " %s_per_rpc: %llu\n",
888 header->lc_units, ret.lc_sum);
891 seq_printf(m, " MB_per_sec: %u.%.02u\n",
892 k / j, (100 * k / j) % 100);
897 int lprocfs_import_seq_show(struct seq_file *m, void *data)
899 struct obd_device *obd = (struct obd_device *)data;
900 struct obd_import *imp;
903 LASSERT(obd != NULL);
904 with_imp_locked(obd, imp, rv)
905 lprocfs_import_seq_show_locked(m, obd, imp);
908 EXPORT_SYMBOL(lprocfs_import_seq_show);
910 int lprocfs_state_seq_show(struct seq_file *m, void *data)
912 struct obd_device *obd = (struct obd_device *)data;
913 struct obd_import *imp;
917 LASSERT(obd != NULL);
918 with_imp_locked(obd, imp, rc) {
919 seq_printf(m, "current_state: %s\n",
920 ptlrpc_import_state_name(imp->imp_state));
921 seq_printf(m, "state_history:\n");
922 k = imp->imp_state_hist_idx;
923 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
924 struct import_state_hist *ish =
925 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
926 if (ish->ish_state == 0)
928 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
929 ptlrpc_import_state_name(ish->ish_state));
935 EXPORT_SYMBOL(lprocfs_state_seq_show);
937 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
940 for (i = 0; i < AT_BINS; i++)
941 seq_printf(m, "%3u ", at->at_hist[i]);
945 EXPORT_SYMBOL(lprocfs_at_hist_helper);
947 /* See also ptlrpc_lprocfs_timeouts_show_seq */
948 static void lprocfs_timeouts_seq_show_locked(struct seq_file *m,
949 struct obd_device *obd,
950 struct obd_import *imp)
952 timeout_t cur_timeout, worst_timeout;
953 time64_t now, worst_timestamp;
956 LASSERT(obd != NULL);
958 now = ktime_get_real_seconds();
960 /* Some network health info for kicks */
961 seq_printf(m, "%-10s : %lld, %llds ago\n",
962 "last reply", (s64)imp->imp_last_reply_time,
963 (s64)(now - imp->imp_last_reply_time));
965 cur_timeout = at_get(&imp->imp_at.iat_net_latency);
966 worst_timeout = imp->imp_at.iat_net_latency.at_worst_timeout_ever;
967 worst_timestamp = imp->imp_at.iat_net_latency.at_worst_timestamp;
968 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
969 "network", cur_timeout, worst_timeout, worst_timestamp,
970 now - worst_timestamp);
971 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
973 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
974 struct adaptive_timeout *service_est;
976 if (imp->imp_at.iat_portal[i] == 0)
979 service_est = &imp->imp_at.iat_service_estimate[i];
980 cur_timeout = at_get(service_est);
981 worst_timeout = service_est->at_worst_timeout_ever;
982 worst_timestamp = service_est->at_worst_timestamp;
983 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
984 imp->imp_at.iat_portal[i], cur_timeout,
985 worst_timeout, worst_timestamp,
986 now - worst_timestamp);
987 lprocfs_at_hist_helper(m, service_est);
991 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
993 struct obd_device *obd = (struct obd_device *)data;
994 struct obd_import *imp;
997 with_imp_locked(obd, imp, rc)
998 lprocfs_timeouts_seq_show_locked(m, obd, imp);
1001 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1003 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1005 struct obd_device *obd = data;
1008 struct obd_import *imp;
1011 with_imp_locked(obd, imp, rc) {
1012 flags = imp->imp_connect_data.ocd_connect_flags;
1013 flags2 = imp->imp_connect_data.ocd_connect_flags2;
1014 seq_printf(m, "flags=%#llx\n", flags);
1015 seq_printf(m, "flags2=%#llx\n", flags2);
1016 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1017 seq_printf(m, "\n");
1022 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1024 static const struct attribute *obd_def_uuid_attrs[] = {
1025 &lustre_attr_uuid.attr,
1029 static const struct attribute *obd_def_attrs[] = {
1030 &lustre_attr_blocksize.attr,
1031 &lustre_attr_kbytestotal.attr,
1032 &lustre_attr_kbytesfree.attr,
1033 &lustre_attr_kbytesavail.attr,
1034 &lustre_attr_filestotal.attr,
1035 &lustre_attr_filesfree.attr,
1036 &lustre_attr_uuid.attr,
1040 static void obd_sysfs_release(struct kobject *kobj)
1042 struct obd_device *obd = container_of(kobj, struct obd_device,
1045 complete(&obd->obd_kobj_unregister);
1048 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1050 struct ldebugfs_vars *debugfs_vars = NULL;
1053 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1056 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1060 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1061 obd->obd_ktype.release = obd_sysfs_release;
1063 obd->obd_kset.kobj.parent = &obd->obd_type->typ_kobj;
1064 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1065 init_completion(&obd->obd_kobj_unregister);
1066 rc = kset_register(&obd->obd_kset);
1071 obd->obd_attrs = obd_def_uuid_attrs;
1073 obd->obd_attrs = obd_def_attrs;
1075 rc = sysfs_create_files(&obd->obd_kset.kobj, obd->obd_attrs);
1077 kset_unregister(&obd->obd_kset);
1081 if (!obd->obd_type->typ_procroot)
1082 debugfs_vars = obd->obd_debugfs_vars;
1083 obd->obd_debugfs_entry = debugfs_create_dir(
1084 obd->obd_name, obd->obd_type->typ_debugfs_entry);
1085 ldebugfs_add_vars(obd->obd_debugfs_entry, debugfs_vars, obd);
1087 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1088 GOTO(already_registered, rc);
1090 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1091 obd->obd_type->typ_procroot,
1092 obd->obd_vars, obd);
1093 if (IS_ERR(obd->obd_proc_entry)) {
1094 rc = PTR_ERR(obd->obd_proc_entry);
1095 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1096 obd->obd_proc_entry = NULL;
1098 debugfs_remove_recursive(obd->obd_debugfs_entry);
1099 obd->obd_debugfs_entry = NULL;
1101 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1102 obd->obd_attrs = NULL;
1103 kset_unregister(&obd->obd_kset);
1109 EXPORT_SYMBOL(lprocfs_obd_setup);
1111 int lprocfs_obd_cleanup(struct obd_device *obd)
1116 if (obd->obd_proc_exports_entry) {
1117 /* Should be no exports left */
1118 lprocfs_remove(&obd->obd_proc_exports_entry);
1119 obd->obd_proc_exports_entry = NULL;
1122 if (obd->obd_proc_entry) {
1123 lprocfs_remove(&obd->obd_proc_entry);
1124 obd->obd_proc_entry = NULL;
1127 debugfs_remove_recursive(obd->obd_debugfs_entry);
1128 obd->obd_debugfs_entry = NULL;
1130 /* obd device never allocated a kset */
1131 if (!obd->obd_kset.kobj.state_initialized)
1134 if (obd->obd_attrs) {
1135 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1136 obd->obd_attrs = NULL;
1139 kset_unregister(&obd->obd_kset);
1140 wait_for_completion(&obd->obd_kobj_unregister);
1143 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1145 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1147 struct lprocfs_counter *cntr;
1148 unsigned int percpusize;
1150 unsigned long flags = 0;
1153 LASSERT(stats->ls_percpu[cpuid] == NULL);
1154 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1156 percpusize = lprocfs_stats_counter_size(stats);
1157 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1158 if (stats->ls_percpu[cpuid]) {
1160 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1161 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1162 spin_lock_irqsave(&stats->ls_lock, flags);
1164 spin_lock(&stats->ls_lock);
1165 if (stats->ls_biggest_alloc_num <= cpuid)
1166 stats->ls_biggest_alloc_num = cpuid + 1;
1167 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1168 spin_unlock_irqrestore(&stats->ls_lock, flags);
1170 spin_unlock(&stats->ls_lock);
1173 /* initialize the ls_percpu[cpuid] non-zero counter */
1174 for (i = 0; i < stats->ls_num; ++i) {
1175 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1176 cntr->lc_min = LC_MIN_INIT;
1182 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1183 enum lprocfs_stats_flags flags)
1185 struct lprocfs_stats *stats;
1186 unsigned int num_entry;
1187 unsigned int percpusize = 0;
1193 if (lprocfs_no_percpu_stats != 0)
1194 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1196 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1199 num_entry = num_possible_cpus();
1201 /* alloc percpu pointers for all possible cpu slots */
1202 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1206 stats->ls_num = num;
1207 stats->ls_flags = flags;
1208 spin_lock_init(&stats->ls_lock);
1210 /* alloc num of counter headers */
1211 CFS_ALLOC_PTR_ARRAY(stats->ls_cnt_header, stats->ls_num);
1212 if (!stats->ls_cnt_header)
1215 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1216 /* contains only one set counters */
1217 percpusize = lprocfs_stats_counter_size(stats);
1218 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1219 if (!stats->ls_percpu[0])
1221 stats->ls_biggest_alloc_num = 1;
1222 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1223 /* alloc all percpu data, currently only obd_memory use this */
1224 for (i = 0; i < num_entry; ++i)
1225 if (lprocfs_stats_alloc_one(stats, i) < 0)
1232 lprocfs_free_stats(&stats);
1235 EXPORT_SYMBOL(lprocfs_alloc_stats);
1237 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1239 struct lprocfs_stats *stats = *statsh;
1240 unsigned int num_entry;
1241 unsigned int percpusize;
1244 if (!stats || stats->ls_num == 0)
1248 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1251 num_entry = num_possible_cpus();
1253 percpusize = lprocfs_stats_counter_size(stats);
1254 for (i = 0; i < num_entry; i++)
1255 if (stats->ls_percpu[i])
1256 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1257 if (stats->ls_cnt_header)
1258 CFS_FREE_PTR_ARRAY(stats->ls_cnt_header, stats->ls_num);
1259 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1261 EXPORT_SYMBOL(lprocfs_free_stats);
1263 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1264 enum lprocfs_fields_flags field)
1266 unsigned long flags = 0;
1267 unsigned int num_cpu;
1273 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1274 for (i = 0; i < num_cpu; i++) {
1275 struct lprocfs_counter *cntr;
1277 if (!stats->ls_percpu[i])
1280 cntr = lprocfs_stats_counter_get(stats, i, idx);
1281 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1282 stats->ls_flags, field);
1284 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1287 EXPORT_SYMBOL(lprocfs_stats_collector);
1289 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1291 struct lprocfs_counter *percpu_cntr;
1294 unsigned int num_entry;
1295 unsigned long flags = 0;
1297 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1299 for (i = 0; i < num_entry; i++) {
1300 if (!stats->ls_percpu[i])
1302 for (j = 0; j < stats->ls_num; j++) {
1303 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1304 percpu_cntr->lc_count = 0;
1305 percpu_cntr->lc_min = LC_MIN_INIT;
1306 percpu_cntr->lc_max = 0;
1307 percpu_cntr->lc_sumsquare = 0;
1308 percpu_cntr->lc_sum = 0;
1309 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1310 percpu_cntr->lc_sum_irq = 0;
1314 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1316 EXPORT_SYMBOL(lprocfs_clear_stats);
1318 static ssize_t lprocfs_stats_seq_write(struct file *file,
1319 const char __user *buf,
1320 size_t len, loff_t *off)
1322 struct seq_file *seq = file->private_data;
1323 struct lprocfs_stats *stats = seq->private;
1325 lprocfs_clear_stats(stats);
1330 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1332 struct lprocfs_stats *stats = p->private;
1334 return (*pos < stats->ls_num) ? pos : NULL;
1337 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1341 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1345 return lprocfs_stats_seq_start(p, pos);
1348 /* seq file export of one lprocfs counter */
1349 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1351 struct lprocfs_stats *stats = p->private;
1352 struct lprocfs_counter_header *hdr;
1353 struct lprocfs_counter ctr;
1354 int idx = *(loff_t *)v;
1357 struct timespec64 now;
1359 ktime_get_real_ts64(&now);
1360 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1361 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1364 hdr = &stats->ls_cnt_header[idx];
1365 lprocfs_stats_collect(stats, idx, &ctr);
1367 if (ctr.lc_count == 0)
1370 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1371 ctr.lc_count, hdr->lc_units);
1373 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1374 seq_printf(p, " %lld %lld %lld",
1375 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1376 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1377 seq_printf(p, " %llu", ctr.lc_sumsquare);
1383 static const struct seq_operations lprocfs_stats_seq_sops = {
1384 .start = lprocfs_stats_seq_start,
1385 .stop = lprocfs_stats_seq_stop,
1386 .next = lprocfs_stats_seq_next,
1387 .show = lprocfs_stats_seq_show,
1390 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1392 struct seq_file *seq;
1395 rc = seq_open(file, &lprocfs_stats_seq_sops);
1398 seq = file->private_data;
1399 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1403 const struct file_operations ldebugfs_stats_seq_fops = {
1404 .owner = THIS_MODULE,
1405 .open = lprocfs_stats_seq_open,
1407 .write = lprocfs_stats_seq_write,
1408 .llseek = seq_lseek,
1409 .release = lprocfs_seq_release,
1411 EXPORT_SYMBOL(ldebugfs_stats_seq_fops);
1413 static const struct file_operations lprocfs_stats_seq_fops = {
1414 .owner = THIS_MODULE,
1415 .open = lprocfs_stats_seq_open,
1417 .write = lprocfs_stats_seq_write,
1418 .llseek = seq_lseek,
1419 .release = lprocfs_seq_release,
1422 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1423 struct lprocfs_stats *stats)
1425 struct proc_dir_entry *entry;
1426 LASSERT(root != NULL);
1428 entry = proc_create_data(name, 0644, root,
1429 &lprocfs_stats_seq_fops, stats);
1434 EXPORT_SYMBOL(lprocfs_register_stats);
1436 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1437 unsigned conf, const char *name, const char *units)
1439 struct lprocfs_counter_header *header;
1440 struct lprocfs_counter *percpu_cntr;
1441 unsigned long flags = 0;
1443 unsigned int num_cpu;
1445 LASSERT(stats != NULL);
1447 header = &stats->ls_cnt_header[index];
1448 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1449 index, name, units);
1451 header->lc_config = conf;
1452 header->lc_name = name;
1453 header->lc_units = units;
1455 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1456 for (i = 0; i < num_cpu; ++i) {
1457 if (!stats->ls_percpu[i])
1459 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1460 percpu_cntr->lc_count = 0;
1461 percpu_cntr->lc_min = LC_MIN_INIT;
1462 percpu_cntr->lc_max = 0;
1463 percpu_cntr->lc_sumsquare = 0;
1464 percpu_cntr->lc_sum = 0;
1465 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1466 percpu_cntr->lc_sum_irq = 0;
1468 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1470 EXPORT_SYMBOL(lprocfs_counter_init);
1472 static const char * const mps_stats[] = {
1473 [LPROC_MD_CLOSE] = "close",
1474 [LPROC_MD_CREATE] = "create",
1475 [LPROC_MD_ENQUEUE] = "enqueue",
1476 [LPROC_MD_GETATTR] = "getattr",
1477 [LPROC_MD_INTENT_LOCK] = "intent_lock",
1478 [LPROC_MD_LINK] = "link",
1479 [LPROC_MD_RENAME] = "rename",
1480 [LPROC_MD_SETATTR] = "setattr",
1481 [LPROC_MD_FSYNC] = "fsync",
1482 [LPROC_MD_READ_PAGE] = "read_page",
1483 [LPROC_MD_UNLINK] = "unlink",
1484 [LPROC_MD_SETXATTR] = "setxattr",
1485 [LPROC_MD_GETXATTR] = "getxattr",
1486 [LPROC_MD_INTENT_GETATTR_ASYNC] = "intent_getattr_async",
1487 [LPROC_MD_REVALIDATE_LOCK] = "revalidate_lock",
1490 int lprocfs_alloc_md_stats(struct obd_device *obd,
1491 unsigned int num_private_stats)
1493 struct lprocfs_stats *stats;
1494 unsigned int num_stats;
1498 * TODO Ensure that this function is only used where
1499 * appropriate by adding an assertion to the effect that
1500 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1501 * because mdt_procfs_init() uses this function to allocate
1502 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1503 * mdt layer does not use the md_ops interface. This is
1504 * confusing and a waste of memory. See LU-2484.
1506 LASSERT(obd->obd_proc_entry != NULL);
1507 LASSERT(obd->obd_md_stats == NULL);
1509 num_stats = ARRAY_SIZE(mps_stats) + num_private_stats;
1510 stats = lprocfs_alloc_stats(num_stats, 0);
1514 for (i = 0; i < ARRAY_SIZE(mps_stats); i++) {
1515 lprocfs_counter_init(stats, i, 0, mps_stats[i], "reqs");
1516 if (!stats->ls_cnt_header[i].lc_name) {
1517 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1523 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1525 lprocfs_free_stats(&stats);
1527 obd->obd_md_stats = stats;
1532 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1534 void lprocfs_free_md_stats(struct obd_device *obd)
1536 struct lprocfs_stats *stats = obd->obd_md_stats;
1539 obd->obd_md_stats = NULL;
1540 lprocfs_free_stats(&stats);
1543 EXPORT_SYMBOL(lprocfs_free_md_stats);
1545 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1547 lprocfs_counter_init(ldlm_stats,
1548 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1549 0, "ldlm_enqueue", "reqs");
1550 lprocfs_counter_init(ldlm_stats,
1551 LDLM_CONVERT - LDLM_FIRST_OPC,
1552 0, "ldlm_convert", "reqs");
1553 lprocfs_counter_init(ldlm_stats,
1554 LDLM_CANCEL - LDLM_FIRST_OPC,
1555 0, "ldlm_cancel", "reqs");
1556 lprocfs_counter_init(ldlm_stats,
1557 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1558 0, "ldlm_bl_callback", "reqs");
1559 lprocfs_counter_init(ldlm_stats,
1560 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1561 0, "ldlm_cp_callback", "reqs");
1562 lprocfs_counter_init(ldlm_stats,
1563 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1564 0, "ldlm_gl_callback", "reqs");
1566 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1568 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1569 struct lprocfs_counter_header *header,
1570 enum lprocfs_stats_flags flags,
1571 enum lprocfs_fields_flags field)
1579 case LPROCFS_FIELDS_FLAGS_CONFIG:
1580 ret = header->lc_config;
1582 case LPROCFS_FIELDS_FLAGS_SUM:
1584 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1585 ret += lc->lc_sum_irq;
1587 case LPROCFS_FIELDS_FLAGS_MIN:
1590 case LPROCFS_FIELDS_FLAGS_MAX:
1593 case LPROCFS_FIELDS_FLAGS_AVG:
1594 ret = (lc->lc_max - lc->lc_min) / 2;
1596 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1597 ret = lc->lc_sumsquare;
1599 case LPROCFS_FIELDS_FLAGS_COUNT:
1607 EXPORT_SYMBOL(lprocfs_read_helper);
1610 * string_to_size - convert ASCII string representing a numerical
1611 * value with optional units to 64-bit binary value
1613 * @size: The numerical value extract out of @buffer
1614 * @buffer: passed in string to parse
1615 * @count: length of the @buffer
1617 * This function returns a 64-bit binary value if @buffer contains a valid
1618 * numerical string. The string is parsed to 3 significant figures after
1619 * the decimal point. Support the string containing an optional units at
1620 * the end which can be base 2 or base 10 in value. If no units are given
1621 * the string is assumed to just a numerical value.
1623 * Returns: @count if the string is successfully parsed,
1624 * -errno on invalid input strings. Error values:
1626 * - ``-EINVAL``: @buffer is not a proper numerical string
1627 * - ``-EOVERFLOW``: results does not fit into 64 bits.
1628 * - ``-E2BIG ``: @buffer is too large (not a valid number)
1630 int string_to_size(u64 *size, const char *buffer, size_t count)
1632 /* For string_get_size() it can support values above exabytes,
1633 * (ZiB, YiB) due to breaking the return value into a size and
1634 * bulk size to avoid 64 bit overflow. We don't break the size
1635 * up into block size units so we don't support ZiB or YiB.
1637 static const char *const units_10[] = {
1638 "kB", "MB", "GB", "TB", "PB", "EB",
1640 static const char *const units_2[] = {
1641 "K", "M", "G", "T", "P", "E",
1643 static const char *const *const units_str[] = {
1644 [STRING_UNITS_2] = units_2,
1645 [STRING_UNITS_10] = units_10,
1647 static const unsigned int coeff[] = {
1648 [STRING_UNITS_10] = 1000,
1649 [STRING_UNITS_2] = 1024,
1651 enum string_size_units unit = STRING_UNITS_2;
1652 u64 whole, blk_size = 1;
1653 char kernbuf[22], *end;
1658 if (count >= sizeof(kernbuf)) {
1659 CERROR("count %zd > buffer %zd\n", count, sizeof(kernbuf));
1664 /* The "iB" suffix is optionally allowed for indicating base-2 numbers.
1665 * If suffix is only "B" and not "iB" then we treat it as base-10.
1667 end = strstr(buffer, "B");
1668 if (end && *(end - 1) != 'i')
1669 unit = STRING_UNITS_10;
1671 i = unit == STRING_UNITS_2 ? ARRAY_SIZE(units_2) - 1 :
1672 ARRAY_SIZE(units_10) - 1;
1674 end = strnstr(buffer, units_str[unit][i], count);
1677 blk_size *= coeff[unit];
1683 /* as 'B' is a substring of all units, we need to handle it
1687 /* 'B' is only acceptable letter at this point */
1688 end = strnchr(buffer, count, 'B');
1692 if (count - len > 2 ||
1693 (count - len == 2 && strcmp(end, "B\n") != 0)) {
1694 CDEBUG(D_INFO, "unknown suffix '%s'\n", buffer);
1698 /* kstrtoull will error out if it has non digits */
1702 end = strnchr(buffer, count, '.');
1704 /* need to limit 3 decimal places */
1705 char rem[4] = "000";
1712 /* limit to 3 decimal points */
1713 off = min_t(size_t, 3, strspn(end, "0123456789"));
1714 /* need to limit frac_d to a u32 */
1715 memcpy(rem, end, off);
1716 rc = kstrtoull(rem, 10, &frac);
1720 if (fls64(frac) + fls64(blk_size) - 1 > 64)
1728 snprintf(kernbuf, sizeof(kernbuf), "%.*s", (int)len, buffer);
1729 rc = kstrtoull(kernbuf, 10, &whole);
1733 if (whole != 0 && fls64(whole) + fls64(blk_size) - 1 > 64)
1736 *size += whole * blk_size;
1740 EXPORT_SYMBOL(string_to_size);
1743 * sysfs_memparse - parse a ASCII string to 64-bit binary value,
1744 * with optional units
1746 * @buffer: kernel pointer to input string
1747 * @count: number of bytes in the input @buffer
1748 * @val: (output) binary value returned to caller
1749 * @defunit: default unit suffix to use if none is provided
1751 * Parses a string into a number. The number stored at @buffer is
1752 * potentially suffixed with K, M, G, T, P, E. Besides these other
1753 * valid suffix units are shown in the string_to_size() function.
1754 * If the string lacks a suffix then the defunit is used. The defunit
1755 * should be given as a binary unit (e.g. MiB) as that is the standard
1756 * for tunables in Lustre. If no unit suffix is given (e.g. 'G'), then
1757 * it is assumed to be in binary units.
1759 * Returns: 0 on success or -errno on failure.
1761 int sysfs_memparse(const char *buffer, size_t count, u64 *val,
1762 const char *defunit)
1764 const char *param = buffer;
1768 count = strlen(buffer);
1769 while (count > 0 && isspace(buffer[count - 1]))
1775 /* If there isn't already a unit on this value, append @defunit.
1776 * Units of 'B' don't affect the value, so don't bother adding.
1778 if (!isalpha(buffer[count - 1]) && defunit[0] != 'B') {
1779 if (count + 3 >= sizeof(tmp_buf)) {
1780 CERROR("count %zd > size %zd\n", count, sizeof(param));
1784 scnprintf(tmp_buf, sizeof(tmp_buf), "%.*s%s", (int)count,
1787 count = strlen(param);
1790 rc = string_to_size(val, param, count);
1792 return rc < 0 ? rc : 0;
1794 EXPORT_SYMBOL(sysfs_memparse);
1796 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1805 if (!memcmp(s1, s2, l2))
1811 EXPORT_SYMBOL(lprocfs_strnstr);
1814 * Find the string \a name in the input \a buffer, and return a pointer to the
1815 * value immediately following \a name, reducing \a count appropriately.
1816 * If \a name is not found the original \a buffer is returned.
1818 char *lprocfs_find_named_value(const char *buffer, const char *name,
1822 size_t buflen = *count;
1824 /* there is no strnstr() in rhel5 and ubuntu kernels */
1825 val = lprocfs_strnstr(buffer, name, buflen);
1827 return (char *)buffer;
1829 val += strlen(name); /* skip prefix */
1830 while (val < buffer + buflen && isspace(*val)) /* skip separator */
1834 while (val < buffer + buflen && isalnum(*val)) {
1839 return val - *count;
1841 EXPORT_SYMBOL(lprocfs_find_named_value);
1843 int lprocfs_seq_create(struct proc_dir_entry *parent,
1846 const struct file_operations *seq_fops,
1849 struct proc_dir_entry *entry;
1852 /* Disallow secretly (un)writable entries. */
1853 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
1855 entry = proc_create_data(name, mode, parent, seq_fops, data);
1862 EXPORT_SYMBOL(lprocfs_seq_create);
1864 int lprocfs_obd_seq_create(struct obd_device *obd,
1867 const struct file_operations *seq_fops,
1870 return lprocfs_seq_create(obd->obd_proc_entry, name,
1871 mode, seq_fops, data);
1873 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1875 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1877 if (value >= OBD_HIST_MAX)
1878 value = OBD_HIST_MAX - 1;
1880 spin_lock(&oh->oh_lock);
1881 oh->oh_buckets[value]++;
1882 spin_unlock(&oh->oh_lock);
1884 EXPORT_SYMBOL(lprocfs_oh_tally);
1886 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1888 unsigned int val = 0;
1890 if (likely(value != 0))
1891 val = min(fls(value - 1), OBD_HIST_MAX);
1893 lprocfs_oh_tally(oh, val);
1895 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
1897 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
1899 unsigned long ret = 0;
1902 for (i = 0; i < OBD_HIST_MAX; i++)
1903 ret += oh->oh_buckets[i];
1906 EXPORT_SYMBOL(lprocfs_oh_sum);
1908 void lprocfs_oh_clear(struct obd_histogram *oh)
1910 spin_lock(&oh->oh_lock);
1911 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
1912 spin_unlock(&oh->oh_lock);
1914 EXPORT_SYMBOL(lprocfs_oh_clear);
1916 ssize_t lustre_attr_show(struct kobject *kobj,
1917 struct attribute *attr, char *buf)
1919 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
1921 return a->show ? a->show(kobj, attr, buf) : 0;
1923 EXPORT_SYMBOL_GPL(lustre_attr_show);
1925 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
1926 const char *buf, size_t len)
1928 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
1930 return a->store ? a->store(kobj, attr, buf, len) : len;
1932 EXPORT_SYMBOL_GPL(lustre_attr_store);
1934 const struct sysfs_ops lustre_sysfs_ops = {
1935 .show = lustre_attr_show,
1936 .store = lustre_attr_store,
1938 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
1940 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
1942 struct obd_device *obd = data;
1943 struct client_obd *cli = &obd->u.cli;
1945 spin_lock(&cli->cl_loi_list_lock);
1946 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
1947 spin_unlock(&cli->cl_loi_list_lock);
1950 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
1952 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
1953 const char __user *buffer,
1954 size_t count, loff_t *off)
1956 struct seq_file *m = file->private_data;
1957 struct obd_device *obd = m->private;
1958 struct client_obd *cli = &obd->u.cli;
1959 struct obd_import *imp;
1960 struct obd_connect_data *ocd;
1965 if (count > sizeof(kernbuf) - 1)
1968 if (copy_from_user(kernbuf, buffer, count))
1971 kernbuf[count] = '\0';
1973 rc = sysfs_memparse(kernbuf, count, &val, "B");
1977 /* if the max_pages is specified in bytes, convert to pages */
1978 if (val >= ONE_MB_BRW_SIZE)
1981 with_imp_locked(obd, imp, rc) {
1982 ocd = &imp->imp_connect_data;
1983 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
1984 /* max_pages_per_rpc must be chunk aligned */
1985 val = (val + ~chunk_mask) & chunk_mask;
1986 if (val == 0 || (ocd->ocd_brw_size != 0 &&
1987 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
1990 spin_lock(&cli->cl_loi_list_lock);
1991 cli->cl_max_pages_per_rpc = val;
1992 client_adjust_max_dirty(cli);
1993 spin_unlock(&cli->cl_loi_list_lock);
1999 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2001 ssize_t short_io_bytes_show(struct kobject *kobj, struct attribute *attr,
2004 struct obd_device *obd = container_of(kobj, struct obd_device,
2006 struct client_obd *cli = &obd->u.cli;
2009 spin_lock(&cli->cl_loi_list_lock);
2010 rc = sprintf(buf, "%d\n", cli->cl_max_short_io_bytes);
2011 spin_unlock(&cli->cl_loi_list_lock);
2014 EXPORT_SYMBOL(short_io_bytes_show);
2016 /* Used to catch people who think they're specifying pages. */
2017 #define MIN_SHORT_IO_BYTES 64U
2019 ssize_t short_io_bytes_store(struct kobject *kobj, struct attribute *attr,
2020 const char *buffer, size_t count)
2022 struct obd_device *obd = container_of(kobj, struct obd_device,
2024 struct client_obd *cli = &obd->u.cli;
2028 if (strcmp(buffer, "-1") == 0) {
2029 val = OBD_DEF_SHORT_IO_BYTES;
2031 rc = sysfs_memparse(buffer, count, &val, "B");
2036 if (val && (val < MIN_SHORT_IO_BYTES || val > LNET_MTU))
2037 GOTO(out, rc = -ERANGE);
2041 spin_lock(&cli->cl_loi_list_lock);
2042 cli->cl_max_short_io_bytes = min_t(u64, val, OST_MAX_SHORT_IO_BYTES);
2043 spin_unlock(&cli->cl_loi_list_lock);
2048 EXPORT_SYMBOL(short_io_bytes_store);
2050 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2051 struct root_squash_info *squash, char *name)
2054 char kernbuf[64], *tmp, *errmsg;
2055 unsigned long uid, gid;
2058 if (count >= sizeof(kernbuf)) {
2059 errmsg = "string too long";
2060 GOTO(failed_noprint, rc = -EINVAL);
2062 if (copy_from_user(kernbuf, buffer, count)) {
2063 errmsg = "bad address";
2064 GOTO(failed_noprint, rc = -EFAULT);
2066 kernbuf[count] = '\0';
2068 /* look for uid gid separator */
2069 tmp = strchr(kernbuf, ':');
2071 errmsg = "needs uid:gid format";
2072 GOTO(failed, rc = -EINVAL);
2078 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2080 GOTO(failed, rc = -EINVAL);
2084 if (kstrtoul(tmp, 0, &gid) != 0) {
2086 GOTO(failed, rc = -EINVAL);
2089 squash->rsi_uid = uid;
2090 squash->rsi_gid = gid;
2092 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2093 name, squash->rsi_uid, squash->rsi_gid);
2101 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2102 name, kernbuf, errmsg, rc);
2105 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2109 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2112 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2113 struct root_squash_info *squash, char *name)
2116 char *kernbuf = NULL;
2123 errmsg = "string too long";
2124 GOTO(failed, rc = -EINVAL);
2127 OBD_ALLOC(kernbuf, count + 1);
2129 errmsg = "no memory";
2130 GOTO(failed, rc = -ENOMEM);
2132 if (copy_from_user(kernbuf, buffer, count)) {
2133 errmsg = "bad address";
2134 GOTO(failed, rc = -EFAULT);
2136 kernbuf[count] = '\0';
2138 if (count > 0 && kernbuf[count - 1] == '\n')
2141 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2142 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2143 /* empty string is special case */
2144 spin_lock(&squash->rsi_lock);
2145 if (!list_empty(&squash->rsi_nosquash_nids))
2146 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2147 spin_unlock(&squash->rsi_lock);
2148 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2149 OBD_FREE(kernbuf, count + 1);
2153 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2154 errmsg = "can't parse";
2155 GOTO(failed, rc = -EINVAL);
2157 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2159 OBD_FREE(kernbuf, count + 1);
2162 spin_lock(&squash->rsi_lock);
2163 if (!list_empty(&squash->rsi_nosquash_nids))
2164 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2165 list_splice(&tmp, &squash->rsi_nosquash_nids);
2166 spin_unlock(&squash->rsi_lock);
2172 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2173 name, kernbuf, errmsg, rc);
2174 OBD_FREE(kernbuf, count + 1);
2176 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2181 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2183 #endif /* CONFIG_PROC_FS*/